CN115751318A - Gas heating device and method - Google Patents

Abstract

The invention discloses a gas heating device and method, wherein the gas heating device includes a heat storage type heating furnace, a heat exchange mechanism, a furnace gas conveying mechanism, a combustion-supporting air conveying mechanism, a flue gas conveying mechanism, a furnace gas conveying mechanism, a combustion-supporting Both the air conveying mechanism and the flue gas conveying mechanism are connected with the regenerative heating furnace, and the furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism are connected in parallel; the furnace gas conveying mechanism is used to convey the furnace gas to In the regenerative heating furnace, the combustion-supporting air delivery mechanism is used to deliver the combustion-supporting air to the regenerative heating furnace, and the flue gas delivery mechanism is used to output the flue gas flowing out of the regenerative heating furnace; the heat exchange mechanism is connected in series On the furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism, the heat exchange mechanism can reduce the temperature of the flue gas, and the heat exchange mechanism can raise the temperature of the furnace gas and the combustion air. Such setting can greatly improve the combustion efficiency of the regenerative heating furnace.

Description

Gas heating device and method

technical field

The invention relates to the technical field of gas heating, in particular to a gas heating device and method.

Background technique

At present, high-pressure and highly explosive gas is generally heated through a heat exchanger type heating furnace, but the temperature of the gas can only reach about 200°C when heated by the above-mentioned heating furnace, which cannot meet the production needs. Therefore, some enterprises have begun to try to use storage The thermal heating furnace heats the high-pressure and explosive gas, but when the regenerative heating furnace is used to heat the high-pressure and explosive gas, the high-pressure and explosive gas is usually directly passed into the heating furnace, resulting in the heating of the heating furnace. Reduced efficiency.

Therefore, how to effectively improve the combustion efficiency of the heating furnace is a technical problem urgently needed to be solved by those skilled in the art.

Contents of the invention

In view of this, the object of the present invention is to provide a gas heating device, which can effectively improve the heating efficiency of the heating furnace.

Another object of the present invention is to provide a gas heating method.

To achieve the above object, the present invention provides the following technical solutions:

A gas heating device, comprising a regenerative heating furnace, a heat exchange mechanism, a furnace gas delivery mechanism, a combustion air delivery mechanism, a flue gas delivery mechanism, the furnace gas delivery mechanism, the combustion air delivery mechanism and the The flue gas conveying mechanism is connected with the regenerative heating furnace, and the furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism are connected in parallel;

The furnace gas conveying mechanism is used to convey the furnace gas to the regenerative heating furnace, the combustion-supporting air conveying mechanism is used to convey the combustion-supporting air to the regenerative heating furnace, and the flue gas The conveying mechanism is used to output the flue gas flowing out of the regenerative heating furnace;

The heat exchange mechanism is connected in series to the furnace gas delivery mechanism, the combustion air delivery mechanism and the flue gas delivery mechanism, the heat exchange mechanism can reduce the temperature of the flue gas, and the heat exchange A mechanism increases the temperature of the furnace gas and the combustion air.

Preferably, it also includes a high-pressure, high-explosive, low-temperature gas delivery mechanism and a high-pressure, high-explosive, high-temperature gas delivery mechanism, both of which are connected to the regenerative heating furnace Pass;

The high-pressure explosive low-temperature gas delivery mechanism is used to deliver the high-pressure explosive low-temperature gas to the regenerative heating furnace, and the high-pressure explosive high-temperature gas delivery mechanism is used to transport the high-pressure explosive low-temperature gas inside the regenerative heating furnace. Explosive hot gas output.

Preferably, the furnace gas conveying mechanism includes a main furnace gas conveying pipeline, a furnace gas conveying branch pipeline, a first double gate valve, a first shut-off valve and a first regulating valve, and the furnace gas conveying main pipeline One end of the furnace gas is connected with the furnace gas, the other end of the furnace gas delivery main pipeline is connected with one end of the furnace gas delivery branch pipeline, and the other end of the furnace gas delivery branch pipeline is connected with the heat storage The heating furnace is connected to each other, and the first double gate valve, the first cut-off valve and the first regulating valve are all arranged on the branch pipeline for conveying the furnace gas.

Preferably, the furnace gas delivery mechanism further includes a first nitrogen protection component and a first release component;

The first nitrogen protection component includes a first nitrogen delivery pipeline and a first nitrogen purge valve, and the first nitrogen delivery pipeline is arranged between the first double gate valve and the first cut-off valve, And communicated with the furnace gas delivery pipeline, the first nitrogen purge valve is set on the first nitrogen delivery pipeline;

The first relief assembly includes a first relief pipeline and a first relief valve, and the first relief pipeline is arranged between the first double gate valve and the first shut-off valve, and is connected to the burner The furnace gas delivery pipeline is connected, and the first relief valve is arranged on the first relief pipeline.

Preferably, the combustion-supporting air delivery mechanism includes a main combustion-supporting air delivery pipeline, a combustion-supporting air delivery branch pipeline, a second double gate valve, a second cut-off valve and a second regulating valve, one end of the combustion-supporting air delivery main pipeline is connected to the The other end of the combustion-supporting air delivery main pipeline is connected with the combustion-supporting air branch pipeline, the other end of the combustion-supporting air delivery branch pipeline is connected with the regenerative heating furnace, and the second double The gate valve, the second cut-off valve and the second regulating valve are all arranged on the branch pipeline for conveying combustion-supporting air.

Preferably, the combustion air delivery mechanism further includes a second nitrogen protection component, a second release component and an oxygen delivery component;

The second nitrogen protection component includes a second nitrogen delivery pipeline and a second nitrogen purge valve, and the second nitrogen delivery pipeline is arranged between the second double gate valve and the second cut-off valve, And communicated with the combustion-supporting air delivery branch pipeline, the second nitrogen purge valve is arranged on the second nitrogen delivery pipeline;

The second release assembly includes a second release line and a second release valve, the second release line is arranged between the first double gate valve and the first cut-off valve, and is connected to the combustion-supporting The air delivery pipelines are connected, and the second release valve is arranged on the second release pipeline;

The oxygen delivery assembly includes an oxygen delivery pipeline and an oxygen regulating valve, the oxygen regulating valve is arranged on the oxygen delivery path, the oxygen delivery pipeline communicates with the combustion air delivery branch pipeline, and the oxygen delivery The pipeline is arranged between the heat exchange mechanism and the second regulating valve.

Preferably, the flue gas conveying mechanism includes a flue gas conveying main pipeline, a flue gas conveying branch pipeline and a third double gate valve, one end of the flue gas conveying main pipeline communicates with the outside atmosphere, and the flue gas conveying main pipe The other end of the pipeline is connected with the flue gas conveying branch pipeline, the other end of the flue gas conveying branch pipeline is connected with the regenerative heating furnace, and the third double gate valve is arranged on the flue gas On the delivery branch pipeline.

Preferably, the flue gas conveying mechanism further includes an exhaust gas buffer output assembly, and the exhaust gas buffer tank output assembly includes an exhaust gas delivery pipeline, an exhaust gas valve, an exhaust gas regulating valve and a buffer tank, and the exhaust gas valve and the exhaust gas regulating valve are both It is arranged on the exhaust gas delivery pipeline, one end of the exhaust gas delivery pipeline communicates with the flue gas delivery branch pipeline, and the other end of the exhaust gas delivery pipeline communicates with the buffer tank.

Preferably, the flue gas delivery mechanism further includes an exhaust gas recovery assembly, the exhaust gas recovery assembly includes an exhaust gas delivery pipeline, an exhaust gas valve, an exhaust gas regulating valve and a recovery tank, and the exhaust gas valve and the exhaust gas regulating valve are both arranged on the On the exhaust gas delivery pipeline, one end of the exhaust gas delivery pipeline communicates with the flue gas delivery branch pipeline, and the other end of the exhaust gas delivery pipeline communicates with the recovery tank.

Preferably, the high-pressure strong explosive low-temperature gas delivery mechanism includes a high-pressure strong explosive low-temperature gas delivery pipeline, a fourth double-ram gate valve and a third shut-off valve, and the fourth double-ram gate valve and the third shut-off valve are both arranged at On the high-pressure, explosive, low-temperature gas delivery pipeline, one end of the high-pressure, explosive, low-temperature gas delivery pipeline communicates with the high-pressure, explosive, low-temperature gas delivery pipeline, and the other end of the high-pressure, explosive, low-temperature gas delivery pipeline communicates with the heat storage connected to the heating furnace.

Preferably, the high-pressure, explosive, low-temperature gas delivery mechanism also includes a third nitrogen protection component, a pressure equalization component, and a steam delivery component;

The third nitrogen protection component includes a third nitrogen purge pipeline, and a third nitrogen purge valve arranged on the nitrogen purge pipeline, and the third nitrogen purge pipeline is set on the fourth double A gate valve and a third shut-off valve, and the third nitrogen purge pipeline communicates with the high-pressure, high-explosive, low-temperature gas delivery pipeline;

The pressure equalization assembly includes a pressure equalization pipeline and a pressure equalization valve, the pressure equalization valve is arranged on the pressure equalization pipeline, and the two ends of the pressure equalization pipeline are respectively arranged on the ends of the fourth double gate valve. both sides;

The steam conveying assembly includes a steam conveying pipeline and a steam regulating valve, the steam regulating valve is arranged on the steam conveying pipeline, and the steam conveying pipeline communicates with the high-pressure, high-explosive, low-temperature gas pipeline.

Preferably, the high-pressure explosive high-temperature gas delivery mechanism includes the high-pressure explosive high-temperature gas delivery pipeline and a high-pressure explosive high-temperature gas valve, and the high-pressure explosive high-temperature gas valve is arranged on the high-pressure explosive high-temperature gas delivery pipe On the road, one end of the high-pressure and explosive high-temperature gas delivery pipeline is connected to the high-pressure and explosive high-temperature gas, and the other end of the high-pressure and explosive high-temperature gas delivery pipeline is connected to the regenerative heating furnace.

Preferably, the heat exchange mechanism includes a first heat exchanger and a second heat exchanger, the first heat exchanger is connected in series to the main pipeline for conveying the furnace gas and the main pipeline for conveying the flue gas, and the first heat exchanger is Two heat exchangers are connected in series on the main combustion air delivery pipeline and the flue gas delivery main pipeline.

Preferably, there are 2-4 regenerative heating furnaces.

A coal gas heating method, which is applied to the gas heating device described in any one of the above, including the mode of converting the furnace to the furnace, the mode of burning the furnace to the furnace, the mode of the furnace to the air supply, and the mode of the air supply to the furnace, The furnace-to-steel furnace mode, the furnace-to-steel furnace mode, the furnace-to-air mode, and the air-to-steel furnace mode can be switched;

The mode of the smoldering furnace-to-sintering furnace is:

S100: Open the waste gas regulating valve, open the waste gas valve, so that the high-pressure strong explosive high-temperature gas in the regenerative heating furnace is released until the pressure in the regenerative heating furnace reaches a preset pressure value;

S200: closing the first nitrogen purge valve, opening the first relief valve, and unloading the pressure in the regenerative heating furnace;

S300: Open the first double gate valve on the furnace gas delivery branch pipeline, keep the first cut-off valve closed, open the first nitrogen purge valve, and purge and replace the high-pressure, explosive, and high-temperature gas in the regenerative heating furnace , until the carbon monoxide content in the flue gas conveying branch pipeline reaches the standard, and the emission is completed;

S400: Open the first double gate valve of the furnace gas delivery branch pipeline, open the first cut-off valve, open the first regulating valve, close the first nitrogen purge valve, close the first relief valve, and open the first combustion air branch pipeline at the same time Two double gate valves, open the second cut-off valve, open the second regulating valve, close the second nitrogen purge valve, close the second relief valve, so that the furnace gas enters the regenerative heating furnace through the first heat exchanger, so that Combustion-supporting air enters the regenerative heating furnace through the second heat exchanger, so that the regenerative heating furnace enters a combustion state;

The mode of turning the furnace into a furnace is as follows:

Close the first regulating valve, close the first shut-off valve, close the second regulating valve, close the second shut-off valve, keep the first double gate valve open, keep the second double gate valve open, open the first nitrogen purge valve, Open the second nitrogen purge valve to purge the furnace gas delivery branch pipeline and the combustion air branch pipeline, and open the fourth nitrogen purge valve and the fifth nitrogen purge valve at the same time, when the first preset time Afterwards, the first double gate gate valve and the second double gate gate valve are closed, and after the second preset time, the first nitrogen purge valve of the furnace gas delivery branch pipeline is closed, and the first relief valve is opened; Close the second nitrogen purge valve of the combustion-supporting air branch pipeline, open the second relief valve, and close the double gate valve on the flue gas delivery branch pipeline at the same time, and the regenerative heating furnace is converted from a burning furnace to a stuffy furnace;

The working mode of the stuffy furnace transfer air supply is:

Open the third cut-off valve, open the third nitrogen purge valve, and carry out nitrogen purge on the high-pressure strong explosive low-temperature gas delivery pipeline. After the purge is completed, close the third nitrogen purge valve;

Open the pressure equalizing valve, when the pressure in the regenerative heating furnace reaches the preset pressure value, close the pressure equalizing valve, open the fourth double gate valve, and send the high-pressure, explosive and high-temperature gas pipeline into the storage In the heating furnace.

The working mode of described air-supply rotary furnace is:

Close the high-pressure strong explosive high-temperature gas valve, the fourth double gate valve and the third cut-off valve, open the third nitrogen purge valve, and the regenerative heating furnace changes from air supply to stuffy furnace mode.

The working mode of described air-supply rotary furnace is:

Close the high-pressure strong explosive high-temperature gas valve, the fourth double gate valve and the third cut-off valve, open the third nitrogen purge valve, and the regenerative heating furnace changes from air supply to stuffy furnace mode.

It can be seen from the above technical solutions that, compared with the prior art, the gas heating device disclosed in the embodiment of the present invention is provided with a heat exchange mechanism, which can convert the furnace gas entering the regenerative heating furnace from the The flue gas flowing out of the regenerative heating furnace performs heat exchange, and the heat exchange mechanism can also exchange heat between the combustion air entering the regenerative heating furnace and the flue gas flowing out of the regenerative heating furnace, so set , so that the furnace gas and combustion-supporting air entering the regenerative heating furnace can first increase the temperature through the heat exchange mechanism and then enter the regenerative heating furnace. This setting can greatly improve the heating efficiency of the regenerative heating furnace , At the same time, it can also reduce the temperature of the flue gas discharged into the outside atmosphere, thereby further reducing environmental pollution.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a schematic structural view of a gas heating device disclosed in the first embodiment of the present invention;

Fig. 2 is a schematic structural view of the gas heating device disclosed in the second embodiment of the present invention.

Among them, the names of the components are as follows:

100-regenerative heating furnace; 200-the main pipeline for burning furnace gas; 201-the branch pipeline for burning furnace gas; 2011-the first double gate valve; 2012-the first shut-off valve; 2013-the first regulating valve; 202 -The first nitrogen delivery pipeline; 2021-the first nitrogen purge valve; 203-the first release pipeline; 2031-the first release valve; 300-combustion air delivery main pipeline; 301-combustion air delivery branch pipeline; 3011- The second double gate valve; 3012-the second cut-off valve; 3013-the second regulating valve; 302-the second nitrogen delivery pipeline; 3021-the second nitrogen purge valve; 303-oxygen delivery pipeline; 3031-oxygen adjustment Valve; 304-the second release pipeline; 3041-the second release valve; 400-the main pipeline for flue gas transmission; 401-the branch pipeline for flue gas transmission; 4011-the third double gate valve; Pipeline; 501-the fourth double gate valve; 502-the third cut-off valve; 503-the third nitrogen purge pipeline; 5031-the third nitrogen purge valve; 504-pressure equalization pipeline; 5041-pressure equalization valve ;505-steam delivery pipeline; 5051-steam regulating valve; 600-high pressure strong explosive high temperature gas delivery pipeline; 601-high pressure strong explosive high temperature gas valve; 700-exhaust gas delivery pipeline; 701-exhaust gas valve; 702-exhaust gas regulation Valve; 703-buffer tank, 704-recovery tank; 800-fourth nitrogen purge pipeline; 801-fourth nitrogen purge valve; 802-fifth nitrogen purge valve; 803-sixth nitrogen purge valve; 900 - first heat exchanger; 1000 - second heat exchanger.

Detailed ways

In view of this, the core of the present invention is to provide a gas heating device, which can effectively improve the combustion efficiency of the heating furnace.

Another core of the present invention is to provide a gas heating method.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, please refer to FIG. 1 to FIG. 2 .

The gas heating device disclosed in the embodiment of the present invention includes a regenerative heating furnace 100, a heat exchange mechanism, a furnace gas conveying mechanism, a combustion air conveying mechanism, a flue gas conveying mechanism, a furnace gas conveying mechanism, a combustion air conveying mechanism and The flue gas conveying mechanisms are all connected to the regenerative heating furnace 100, and the furnace gas conveying mechanism, the combustion-supporting air conveying mechanism and the flue gas conveying mechanism are all connected in parallel.

Among them, the furnace gas conveying mechanism is used to convey the furnace gas to the regenerative heating furnace 100, the combustion-supporting air conveying mechanism is used to convey the combustion-supporting air to the regenerative heating furnace 100, and the flue gas conveying mechanism is used to transfer the The flue gas flowing out of the thermal heating furnace 100 is output.

It should be noted that the heat exchange mechanism is connected in series to the furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism. The temperature rises.

Compared with the prior art, a heat exchange mechanism is provided in the gas heating device disclosed in the embodiment of the present invention, and the heat exchange mechanism can transfer the furnace gas entering the regenerative heating furnace 100 to the gas from the regenerative heating furnace 100 The flue gas flowing out of the regenerative heating furnace 100 is used for heat exchange. At the same time, the heat exchange mechanism can also exchange heat between the combustion air entering the regenerative heating furnace 100 and the flue gas flowing out of the regenerative heating furnace 100. The furnace gas and combustion-supporting air in the regenerative heating furnace 100 can firstly pass through the heat exchange mechanism to raise the temperature before entering the regenerative heating furnace 100. Such setting can greatly improve the heating efficiency of the regenerative heating furnace 100. At the same time, the temperature of the flue gas discharged into the outside atmosphere can also be reduced, thereby further reducing environmental pollution.

As a preferred embodiment, the gas heating device disclosed in the embodiment of the present invention also includes a high-pressure explosive low-temperature gas delivery mechanism and a high-pressure explosive high-temperature gas delivery mechanism, both of which are high-pressure explosive low-temperature gas delivery mechanisms and high-pressure explosive high-temperature gas delivery mechanisms. It communicates with the regenerative heating furnace 100 .

Among them, the high-pressure strong explosive low-temperature gas delivery mechanism is used to deliver the high-pressure strong explosive low-temperature gas to the regenerative heating furnace 100, and the high-pressure strong explosive high-temperature gas delivery mechanism is used to transport the high-pressure strong explosive high-temperature gas inside the regenerative heating furnace 100 output.

The embodiment of the present invention does not limit the specific structure of the furnace gas delivery mechanism, as long as the structure meets the requirements of the present invention, it is within the protection scope of the present invention.

As a preferred embodiment, the furnace gas conveying mechanism disclosed in the embodiment of the present invention includes a furnace gas conveying main pipeline 200, a furnace gas conveying branch pipeline 201, a first double gate valve 2011, a first shut-off valve 2012 and a first Regulating valve 2013, wherein one end of the main furnace gas delivery pipeline 200 is connected with the furnace gas, the other end of the main furnace gas delivery pipeline 200 is connected with one end of the furnace gas delivery branch pipeline 201, and the furnace gas delivery branch pipe The other end of the road 201 communicates with the regenerative heating furnace 100 , and the first double gate valve 2011 , the first cut-off valve 2012 and the first regulating valve 2013 are all set on the furnace gas delivery branch pipeline 201 .

Among them, the first regulating valve 2013 is used to regulate the gas flow of the furnace gas branch pipeline. When the first double gate valve 2011, the first shut-off valve 2012 and the first regulating valve 2013 are all opened, the furnace gas can flow from the furnace The main gas delivery pipeline 200 enters, and enters the regenerative heating furnace 100 through the furnace gas delivery branch pipeline 201 .

In order to protect the furnace gas delivery branch pipeline 201 and the regenerative heating furnace 100, the furnace gas delivery mechanism disclosed in the embodiment of the present invention further includes a first nitrogen protection component and a first release component.

Wherein, the first nitrogen protection component includes a first nitrogen delivery pipeline 202 and a first nitrogen purge valve 2021, and the first nitrogen delivery pipeline 202 is arranged between the first double gate valve 2011 and the first cut-off valve 2012, and Connected with the furnace gas delivery pipeline, the first nitrogen purge valve 2021 is set on the first nitrogen delivery pipeline 202;

The first relief assembly includes a first relief pipeline 203 and a first relief valve 2031. The first relief pipeline 203 is arranged between the first double gate valve 2011 and the first cut-off valve 2012, and is connected to the furnace gas delivery pipeline. In communication with each other, the first relief valve 2031 is disposed on the first relief pipeline 203 .

When the first double gate valve 2011, the first cut-off valve 2012 and the first regulating valve 2013 are all closed, the first release valve 2031 is opened to release the leaked gas in the furnace gas delivery branch pipeline 201.

The embodiment of the present invention does not limit the specific structure of the combustion air delivery mechanism, as long as the structure meets the requirements of the present invention, it is within the protection scope of the present invention.

As a preferred embodiment, the combustion air delivery mechanism disclosed in the embodiment of the present invention includes a main combustion air delivery pipeline 300, a combustion air delivery branch pipeline 301, a second double gate valve 3011, a second shut-off valve 3012 and a second regulating valve 3013 , wherein, one end of the main combustion air delivery pipeline 300 is connected with the combustion air, the other end of the main combustion air delivery pipeline 300 is connected with the combustion air delivery branch pipeline 301, and the other end of the combustion air delivery branch pipeline 301 is connected with the regenerative heating The furnaces 100 are connected to each other, and the second double gate valve 3011 , the second cut-off valve 3012 and the second regulating valve 3013 are all arranged on the combustion air delivery branch pipeline 301 .

Wherein, the second regulating valve 3013 is used to regulate the gas flow rate of the combustion-supporting air. When the second double gate valve 3011, the second cut-off valve 3012 and the second regulating valve 3013 are all opened, the combustion-supporting air can be transported from the combustion-supporting air main pipeline 300 Enter the combustion-supporting air delivery branch pipeline 301, and then enter the regenerative heating furnace 100 from the combustion-supporting air delivery branch pipeline 301.

In order to protect the combustion air delivery branch pipeline 301 and the regenerative heating furnace 100, the combustion air delivery mechanism disclosed in the embodiment of the present invention further includes a second nitrogen protection component, a second release component and an oxygen delivery component.

The second release assembly includes a second release line 304 and a second release valve 3041, the second release line 304 is arranged between the second double gate valve 3011 and the second cut-off valve 3012, and is connected to the combustion air delivery line 301 In communication with each other, the second relief valve 3041 is disposed on the second relief pipeline 304 .

Wherein, the second nitrogen protection assembly includes a second nitrogen delivery pipeline 302 and a second nitrogen purge valve 3021, and the second nitrogen delivery pipeline 302 is arranged between the second double gate valve 3011 and the second shut-off valve 3012, and It communicates with the combustion air delivery branch pipeline 301 , and the second nitrogen purge valve 3021 is arranged on the second nitrogen delivery pipeline 302 .

Wherein, the oxygen delivery assembly includes an oxygen delivery pipeline 303 and an oxygen regulating valve 3031, the oxygen regulating valve 3031 is arranged on the oxygen delivery pipeline 303, the oxygen delivery pipeline 303 is connected with the combustion air delivery branch pipeline 301, and the oxygen delivery pipeline 303 is disposed between the heat exchange mechanism and the second regulating valve 3013 .

When the second double gate valve 3011, the second cut-off valve 3012 and the second regulating valve 3013 are all closed, the second release valve 3041 is opened to release the leaked gas in the combustion air branch pipeline 301.

When the second double gate valve 3011, the second cut-off valve 3012 and the second regulating valve 3013 are all opened, the oxygen regulating valve 3031 is opened, and oxygen is input into the combustion air delivery branch pipeline 301 to further remove carbon deposits.

The embodiment of the present invention does not limit the specific structure of the flue gas conveying mechanism, as long as the structure meets the requirements of the present invention, it is within the protection scope of the present invention.

As a preferred embodiment, the flue gas conveying mechanism disclosed in the embodiment of the present invention includes a flue gas conveying main pipeline 400, a flue gas conveying branch pipeline 401 and a third double gate valve 4011, wherein one end of the flue gas conveying main pipeline 400 is connected to The outside atmosphere is connected, the other end of the main flue gas delivery pipeline 400 is connected with the flue gas delivery branch pipeline 401, the other end of the flue gas delivery branch pipeline 401 is connected with the regenerative heating furnace 100, and the third double gate valve 4011 Set on the flue gas conveying branch pipeline 401.

Wherein, open the third double gate valve 4011, the flue gas in the regenerative heating furnace 100 can be discharged from the regenerative heating furnace 100 through the flue gas conveying branch pipeline 401 and the flue gas conveying main pipeline 400 to the outside atmosphere middle.

Wherein, the flue gas discharged from the regenerative heating furnace 100 may be directly discharged into the atmosphere, or may be recycled.

As the first preferred embodiment of the present invention, please refer to FIG. 1 for details. The flue gas delivery mechanism disclosed in the embodiment of the present invention also includes an exhaust gas buffer output assembly, wherein the output assembly of the exhaust gas buffer tank 703 includes an exhaust gas delivery pipeline 700, an exhaust gas The valve 701, the waste gas regulating valve 702 and the buffer tank 703, the waste gas valve 701 and the waste gas regulating valve 702 are all arranged on the waste gas conveying pipeline 700, and one end of the waste gas conveying pipeline 700 is connected with the flue gas conveying branch pipeline 401, and the waste gas conveying pipe The other end of the path 700 communicates with a buffer tank 703 .

It should be noted that the waste gas regulating valve 702 can adjust the flow rate of the waste gas conveying pipeline 700. When the waste gas valve 701 and the waste gas regulating valve 702 are opened, the flue gas can be transported from the flue gas conveying branch pipe 401, the waste gas valve 701, and the waste gas regulating valve 702 in sequence. Enter the buffer tank 703, and discharge into the outside atmosphere after being buffered in the buffer tank 703.

As the second preferred embodiment of the present invention, please refer to FIG. 2 for details. The flue gas delivery mechanism disclosed in the embodiment of the present invention also includes an exhaust gas recovery assembly, which includes an exhaust gas delivery pipeline 700, an exhaust gas valve 701, and an exhaust gas regulating valve. 702 and the recovery tank 704, the waste gas valve 701 and the waste gas regulating valve 702 are all arranged on the waste gas delivery pipeline 700, one end of the waste gas delivery pipeline 700 is connected with the flue gas delivery branch pipeline 401, and the other end of the waste gas delivery pipeline 700 is connected with the The recovery tank 704 is connected.

It should be noted that the waste gas regulating valve 702 can adjust the flow rate of the waste gas conveying pipeline 700. When the waste gas valve 701 and the waste gas regulating valve 702 are opened, the flue gas can be transported from the flue gas conveying branch pipe 401, the waste gas valve 701, and the waste gas regulating valve 702 in sequence. Enter the recycling tank 704 to be recycled.

The embodiment of the present invention does not limit the specific mechanism of the high-pressure, high-explosive, low-temperature gas delivery mechanism, as long as the structure meets the requirements of the present invention, it is within the protection scope of the present invention.

As a preferred embodiment, the high-pressure strong explosive low-temperature gas delivery mechanism disclosed in the embodiment of the present invention includes a high-pressure strong explosive low-temperature gas delivery pipeline 500, a fourth double gate valve 501 and a third shut-off valve 502, the fourth double gate valve 501 and the third cut-off valve 502 are both arranged on the high-pressure and high-explosive low-temperature gas delivery pipeline 500, one end of the high-pressure and high-explosive low-temperature gas delivery pipeline 500 communicates with the high-pressure and high-explosive low-temperature gas delivery pipeline 500 The other end communicates with the regenerative heating furnace 100.

As a preferred embodiment, the high-pressure, high-strength, explosive, and low-temperature gas delivery mechanism disclosed in the embodiment of the present invention further includes a third nitrogen protection component, a pressure equalization component, and a steam delivery component.

Wherein, the third nitrogen protection component includes a third nitrogen purge pipeline 503, and a third nitrogen purge valve 5031 arranged on the nitrogen purge pipeline, and the third nitrogen purge pipeline 503 is set on the fourth double-disc gate valve 501 and the third shut-off valve 502, and the third nitrogen purge pipeline 503 is in communication with the high-pressure strong explosive low-temperature gas delivery pipeline 500.

Wherein, the pressure equalizing component includes a pressure equalizing pipeline 504 and a pressure equalizing valve 5041, the pressure equalizing valve 5041 is arranged on the pressure equalizing pipeline 504, and the two ends of the pressure equalizing pipeline 504 are respectively arranged on the two ends of the fourth double gate valve 501. side.

Wherein, the steam conveying assembly includes a steam conveying pipeline 505 and a steam regulating valve 5051, the steam regulating valve 5051 is arranged on the steam conveying pipeline 505, and the steam conveying pipeline 505 is connected with a high-pressure strong explosive low-temperature gas pipeline.

It should be noted that the pressure equalizing valve 5041 can balance the pressure in the high-pressure strong explosive low-temperature gas pipeline 500. When the fourth double gate valve 501 and the third shut-off valve 502 are opened, the high-pressure strong explosive low-temperature gas can enter the regenerative Combustion is carried out in the heating furnace 100 .

When the fourth double gate valve 501 is closed, the third cut-off valve 502 is opened, and the third nitrogen purge valve 5031 is opened, the high pressure strong explosive low temperature gas between the fourth double gate valve 501 and the regenerative heating furnace 100 can be The delivery line 500 is purged.

When high-pressure strong explosive low-temperature gas enters the regenerative heating furnace 100, the steam regulating valve 5051 can be opened to allow steam to enter the high-pressure strong explosive low-temperature gas delivery pipeline 500, thereby inhibiting the formation of carbon deposits.

The embodiment of the present invention does not limit the specific structure of the high-pressure, high-explosive, high-temperature gas delivery mechanism, as long as the structure meets the requirements of the present invention, it is within the protection scope of the present invention.

As a preferred embodiment, the high-pressure and explosive high-temperature gas delivery mechanism disclosed in the embodiment of the present invention includes a high-pressure and explosive high-temperature gas delivery pipeline 600 and a high-pressure and explosive high-temperature gas valve 601. On the high-temperature gas pipeline 600 , one end of the high-pressure and explosive high-temperature gas pipeline 600 is connected to the high-pressure and explosive high-temperature gas, and the other end of the high-pressure and explosive high-temperature gas pipeline 600 is connected to the regenerative heating furnace 100 .

The high-pressure and explosive low-temperature gas is heated and burned in the regenerative heating furnace 100 to form high-pressure and explosive high-temperature gas, and the high-pressure and explosive high-temperature gas valve 601 is opened, and the high-temperature gas in the regenerative heating furnace 100 can enter the high-pressure and explosive high-temperature gas delivery pipe Inside the road 600.

It should be noted that in the embodiment of the present invention, a corrugated compensator and a tensioning device are also provided on the high-pressure, high-temperature, explosive, and high-temperature gas delivery pipeline 600, so that the expansion of the high-pressure, high-pressure, and high-temperature gas delivery pipeline can be avoided. Cracked pipes and gas leaks.

At the same time, a pressure detection point is also set in the interlayer of the bellows of the corrugated compensator to monitor whether the compensator leaks.

The regenerative heating furnace 100 disclosed in the embodiment of the present invention can be provided with two or more, which is not limited in the embodiment of the present invention, and those skilled in the art can choose according to the actual situation.

As a preference, the regenerative heating furnace 100 disclosed in the embodiment of the present invention is preferably provided with 2-4 seats. When 2-4 seats are provided, multiple furnace gas delivery branch pipelines 201, combustion-supporting air delivery branch pipelines 301 and smoke Gas delivery branch pipeline 401, in which the two ends of a plurality of furnace gas delivery branch pipelines 201 are respectively connected to the furnace gas delivery main pipeline 200 and the regenerative heating furnace 100, and the two ends of the combustion-supporting air delivery branch pipeline 301 are respectively connected to flue gas delivery Both ends of the main pipeline 400 and the regenerative heating furnace 100 , and the flue gas delivery branch pipeline 401 are respectively connected to the external atmosphere and the regenerative heating furnace 100 .

The embodiment of the present invention does not limit the specific structure of the heat exchange mechanism, as long as the structure meets the requirements of the present invention, it is within the protection scope of the present invention.

As a preferred embodiment, the heat exchange mechanism disclosed in the embodiment of the present invention includes a first heat exchanger 900 and a second heat exchanger 1000, wherein the first heat exchanger 900 is connected in series with the main furnace gas delivery pipeline 200 and the flue gas On the main delivery pipeline 400 , the second heat exchanger 1000 is connected in series with the main combustion air delivery pipeline 300 and the main flue gas delivery pipeline 400 .

With such an arrangement, the flue gas can exchange heat with the furnace gas through the first heat exchanger 900, so that the temperature of the flue gas decreases and the temperature of the furnace gas increases, and the flue gas can also be transferred through the second heat exchanger 1000 The heat exchange with the combustion-supporting air reduces the temperature of the flue gas and increases the temperature of the combustion-supporting air.

As a preferred embodiment, the gas heating device disclosed in the embodiment of the present invention also includes a fourth nitrogen purge pipeline 800 and a fourth nitrogen purge valve 801 arranged on the fourth nitrogen purge pipeline 800, and the fifth nitrogen purge The purge valve 802 and the sixth nitrogen purge valve 803, wherein the fourth nitrogen purge valve 801, the fifth nitrogen purge valve 802 and the sixth nitrogen purge valve 803 can carry out nitrogen purge to the regenerative heating furnace 100 respectively , to further enhance the safety of the regenerative heating furnace 100.

It should be noted that the gas heating device disclosed in the embodiment of the present invention also includes a plurality of explosion relief valves and explosion relief membranes, which can perform directional and organized explosion relief in the event of an accidental explosion;

The embodiment of the present invention also discloses a gas heating method, which is applied to the gas heating device disclosed in any one of the above embodiments, including the mode of turning the furnace into a furnace, the mode of turning a furnace into a furnace, and the mode of transferring a furnace into a furnace. Wind mode and air supply to furnace mode, furnace to furnace mode, furnace to furnace mode, furnace to air mode and air supply to furnace mode can be switched to each other.

Among them, the mode of the smoldering furnace to the firing furnace is:

S100: Open the waste gas regulating valve 702 and the waste gas valve 701, so that the high-pressure, explosive and high-temperature gas in the regenerative heating furnace 100 is released until the pressure in the regenerative heating furnace 100 reaches a preset pressure value;

S200: close the first nitrogen purge valve 2021, open the first relief valve 2031, and unload the pressure in the regenerative heating furnace 100;

S300: Open the first double-gate gate valve 2011 on the furnace gas delivery branch pipeline 201, keep the first cut-off valve 2012 closed, open the first nitrogen purge valve 2021, and clean the high-pressure strong explosive high-temperature gas in the regenerative heating furnace 100 Purging and replacement until the carbon monoxide content in the flue gas delivery branch pipeline 401 reaches the standard, and the release is completed;

S400: Open the first double gate valve 2011 on the furnace gas delivery branch pipeline 201, open the first cut-off valve 2012, open the first regulating valve 2013, close the first nitrogen purge valve 2021, close the first release valve 2031, Simultaneously open the second double gate valve 3011 of 301 on the combustion air branch pipeline, open the second cut-off valve 3012, open the second regulating valve 3013, close the second nitrogen purge valve 3021, close the second release valve 3041, so that the furnace gas Enter the regenerative heating furnace 100 through the first heat exchanger 900, so that the combustion air enters the regenerative heating furnace 100 through the second heat exchanger 1000, so that the regenerative heating furnace 100 enters a combustion state;

The furnace-to-steel furnace mode is:

Close the first regulating valve 2013, close the first shut-off valve 2012, close the second regulating valve 3013, close the second shut-off valve 3012, keep the first double gate valve 2011 open, keep the second double gate valve 3011 open, open the second A nitrogen purge valve 2021, open the second nitrogen purge valve 3021, purge the furnace gas delivery branch pipeline and combustion-supporting air delivery branch pipeline 301, and open the fourth nitrogen purge valve 801 and the fifth nitrogen purge valve at the same time 802. After the first preset time, close the first double gate gate valve and the second double gate gate valve 3011, and after the second preset time, close the first nitrogen purge on the furnace gas delivery branch pipeline 201 Valve 2021, open the first relief valve 2031, close the second nitrogen purge valve 3021, open the second relief valve 3041, and close the flue gas delivery branch pipeline 401 and double gate valve 4011 at the same time, the regenerative heating furnace 100 is converted from the furnace For the stuffy furnace.

The working mode of the stuffy furnace transfer air supply is:

Open the third cut-off valve 502, open the third nitrogen purge valve 5031, and carry out nitrogen purge on the high-pressure strong explosive low-temperature gas delivery pipeline 500, and close the third nitrogen purge valve 5031 after the purge is completed;

Open the pressure equalizing valve 5041, when the pressure in the regenerative heating furnace 100 reaches the preset pressure value, close the pressure equalizing valve 5041, open the fourth double gate valve 501, and send the high-pressure strong explosive high-temperature gas pipeline 600 into the Inside the regenerative heating furnace 100.

The working mode of the air-supply rotary furnace is:

Close the high-pressure strong explosive high-temperature gas valve 601, the fourth double gate valve 501 and the third cut-off valve 502, open the third nitrogen purge valve 5031, and the regenerative heating furnace 100 changes from air supply to stuffy furnace mode.

Compared with the prior art, the gas heating device disclosed in the embodiment of the present invention is provided with a first heat exchanger 900 and a second heat exchanger 1000, and the first heat exchanger 900 can transfer the gas entering the regenerative heating furnace 100 The furnace gas exchanges heat with the flue gas flowing out from the regenerative heating furnace 100, and the second heat exchanger 1000 can exchange the combustion-supporting air entering the regenerative heating furnace 100 with the flue gas flowing out from the regenerative heating furnace 100. The flue gas is heat-exchanged, so that the furnace gas and combustion-supporting air entering the regenerative heating furnace 100 can first pass through the first heat exchanger and the second heat exchanger to raise the temperature before entering the heat storage Type heating furnace 100, so set, can greatly improve the combustion efficiency of regenerative heating furnace 100, can also reduce the temperature of flue gas flowing into the outside atmosphere, thereby further reducing environmental pollution.

The embodiment of the present invention does not limit the first preset time and the second preset time, and those skilled in the art may select according to actual conditions.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific orientation construction and operation, therefore should not be construed as limiting the application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (15)

1. A gas heating device, characterized in that it comprises a regenerative heating furnace, a heat exchange mechanism, a furnace gas conveying mechanism, a combustion-supporting air conveying mechanism, a flue gas conveying mechanism, the furnace gas conveying mechanism, the combustion-supporting Both the air conveying mechanism and the flue gas conveying mechanism are connected to the regenerative heating furnace, and the furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism are all connected in parallel; The furnace gas conveying mechanism is used to convey the furnace gas to the regenerative heating furnace, the combustion-supporting air conveying mechanism is used to convey the combustion-supporting air to the regenerative heating furnace, and the flue gas The conveying mechanism is used to output the flue gas flowing out of the regenerative heating furnace; The heat exchange mechanism is connected in series to the furnace gas delivery mechanism, the combustion air delivery mechanism and the flue gas delivery mechanism, the heat exchange mechanism can reduce the temperature of the flue gas, and the heat exchange A mechanism increases the temperature of the furnace gas and the combustion air. 2. The gas heating device according to claim 1, characterized in that it also includes a high-pressure explosive low-temperature gas delivery mechanism and a high-pressure explosive high-temperature gas delivery mechanism, the high-pressure explosive low-temperature gas delivery mechanism and the high-pressure explosive low-temperature gas delivery mechanism The high-temperature gas conveying mechanisms are all connected to the regenerative heating furnace; The high-pressure explosive low-temperature gas delivery mechanism is used to deliver the high-pressure explosive low-temperature gas to the regenerative heating furnace, and the high-pressure explosive high-temperature gas delivery mechanism is used to transport the high-pressure explosive low-temperature gas inside the regenerative heating furnace. Explosive hot gas output. 3. The gas heating device according to claim 1, characterized in that, the furnace gas conveying mechanism comprises a main furnace gas conveying pipeline, a furnace gas conveying branch pipeline, a first double gate valve, and a first shut-off valve and the first regulating valve, one end of the main furnace gas delivery pipeline communicates with the furnace gas, the other end of the main furnace gas delivery pipeline communicates with one end of the furnace gas delivery branch pipeline, and the The other end of the furnace gas delivery branch pipeline is connected to the regenerative heating furnace, and the first double gate valve, the first shut-off valve and the first regulating valve are all set at the On the delivery branch pipeline. 4. The gas heating device according to claim 3, characterized in that, the furnace gas delivery mechanism further comprises a first nitrogen protection component and a first release component; The first nitrogen protection component includes a first nitrogen delivery pipeline and a first nitrogen purge valve, and the first nitrogen delivery pipeline is arranged between the first double gate valve and the first cut-off valve, And communicated with the furnace gas delivery pipeline, the first nitrogen purge valve is set on the first nitrogen delivery pipeline; The first relief assembly includes a first relief pipeline and a first relief valve, and the first relief pipeline is arranged between the first double gate valve and the first shut-off valve, and is connected to the burner The furnace gas delivery pipeline is connected, and the first relief valve is arranged on the first relief pipeline. 5. The gas heating device according to claim 1, characterized in that, the combustion air delivery mechanism comprises a main combustion air delivery pipeline, a combustion air delivery branch pipeline, a second double gate valve, a second cut-off valve and a second Regulating valve, one end of the main combustion air delivery pipeline communicates with the combustion air, the other end of the main combustion air delivery pipeline communicates with the combustion air branch pipeline, and the other end of the combustion air delivery branch pipeline communicates with the The regenerative heating furnace is connected, and the second double gate valve, the second cut-off valve and the second regulating valve are all arranged on the combustion air delivery branch pipeline. 6. The gas heating device according to claim 5, wherein the combustion air delivery mechanism further comprises a second nitrogen protection component, a second release component and an oxygen delivery component; The second nitrogen protection component includes a second nitrogen delivery pipeline and a second nitrogen purge valve, and the second nitrogen delivery pipeline is arranged between the second double gate valve and the second cut-off valve, And communicated with the furnace gas delivery branch pipeline, the second nitrogen purge valve is arranged on the second nitrogen delivery pipeline; The second relief assembly includes a second relief pipeline and a second relief valve, the second relief pipeline is arranged between the second double-disc gate valve and the second shut-off valve, and is connected to the burner The furnace gas delivery pipeline is connected, and the second relief valve is arranged on the second relief pipeline; The oxygen delivery assembly includes an oxygen delivery pipeline and an oxygen regulating valve, the oxygen regulating valve is arranged on the oxygen delivery path, the oxygen delivery pipeline communicates with the combustion air delivery branch pipeline, and the oxygen delivery The pipeline is arranged between the heat exchange mechanism and the second regulating valve. 7. The gas heating device according to claim 1, characterized in that, the flue gas conveying mechanism comprises a flue gas conveying main pipeline, a flue gas conveying branch pipeline and a third double gate valve, and the flue gas conveying main pipeline One end of the flue gas delivery pipeline is connected with the outside atmosphere, the other end of the flue gas delivery main pipeline is connected with the flue gas delivery branch pipeline, and the other end of the flue gas delivery branch pipeline is connected with the regenerative heating furnace, The third double gate valve is arranged on the flue gas conveying branch pipeline. 8. The gas heating device according to claim 7, characterized in that, the flue gas conveying mechanism further includes an exhaust gas buffer output assembly, and the exhaust gas buffer tank output assembly includes an exhaust gas delivery pipeline, an exhaust gas valve, an exhaust gas regulating valve and The buffer tank, the waste gas valve and the waste gas regulating valve are all arranged on the waste gas conveying pipeline, one end of the waste gas conveying pipeline communicates with the flue gas conveying branch pipeline, and the other end of the waste gas conveying pipeline One end communicates with the buffer tank. 9. The gas heating device according to claim 7, characterized in that, the flue gas conveying mechanism further includes a waste gas recovery assembly, and the waste gas recovery component includes a waste gas conveying pipeline, a waste gas valve, a waste gas regulating valve and a recovery tank, Both the waste gas valve and the waste gas regulating valve are arranged on the waste gas conveying pipeline, one end of the waste gas conveying pipeline communicates with the flue gas conveying branch pipeline, and the other end of the waste gas conveying pipeline communicates with the exhaust gas conveying pipeline. The recovery tank is connected. 10. The gas heating device according to claim 2, characterized in that, the high-pressure explosive low-temperature gas delivery mechanism comprises a high-pressure explosive low-temperature gas delivery pipeline, a fourth double gate valve and a third shut-off valve, the Both the fourth double gate valve and the third cut-off valve are arranged on the high-pressure, high-explosive, low-temperature gas delivery pipeline, one end of the high-pressure, high-explosive, low-temperature gas delivery pipeline communicates with the high-pressure, high-explosive, low-temperature gas, and the high-pressure, high-pressure, low-temperature gas delivery pipeline The other end of the explosive low-temperature gas delivery pipeline communicates with the regenerative heating furnace. 11. The gas heating device according to claim 10, characterized in that, the high-pressure explosive low-temperature gas delivery mechanism further comprises a third nitrogen protection component, a pressure equalization component and a steam delivery component; The third nitrogen protection component includes a third nitrogen purge pipeline, and a third nitrogen purge valve arranged on the nitrogen purge pipeline, and the third nitrogen purge pipeline is set on the fourth double A gate valve and a third shut-off valve, and the third nitrogen purge pipeline communicates with the high-pressure, high-explosive, low-temperature gas delivery pipeline; The pressure equalization assembly includes a pressure equalization pipeline and a pressure equalization valve, the pressure equalization valve is arranged on the pressure equalization pipeline, and the two ends of the pressure equalization pipeline are respectively arranged on the ends of the fourth double gate valve. both sides; The steam conveying assembly includes a steam conveying pipeline and a steam regulating valve, the steam regulating valve is arranged on the steam conveying pipeline, and the steam conveying pipeline communicates with the high-pressure, high-explosive, low-temperature gas pipeline. 12. The gas heating device according to claim 2, characterized in that, the high-pressure explosive high-temperature gas delivery mechanism comprises the high-pressure explosive high-temperature gas delivery pipeline and a high-pressure explosive high-temperature gas valve, and the high-pressure explosive high-temperature gas valve The high-temperature gas valve is set on the high-pressure and explosive high-temperature gas delivery pipeline, one end of the high-pressure and explosive high-temperature gas delivery pipeline communicates with the high-pressure and high-temperature explosive gas delivery pipeline, and the other end of the high-pressure and explosive high-temperature gas delivery pipeline It communicates with the regenerative heating furnace. 13. The gas heating device according to claim 1, characterized in that the heat exchange mechanism includes a first heat exchanger and a second heat exchanger, and the first heat exchanger is connected in series to the furnace gas delivery The main pipeline is connected to the main flue gas delivery pipeline, and the second heat exchanger is connected in series to the main combustion air delivery pipeline and the main flue gas delivery pipeline. 14. The gas heating device according to claim 1, characterized in that there are 2-4 regenerative heating furnaces. 15. A coal gas heating method, which is applied to the gas heating device as claimed in any one of claims 1-14, characterized in that it includes the mode of turning the furnace into a furnace, the mode of turning a furnace into a furnace, and the mode of transferring a furnace into a furnace. Wind mode and air supply to furnace mode, the furnace to furnace mode, the furnace to furnace mode, the furnace to air mode and the air supply to furnace mode can be switched to each other ; The mode of the smoldering furnace-to-sintering furnace is: S100: Open the waste gas regulating valve, open the waste gas valve, so that the high-pressure strong explosive high-temperature gas in the regenerative heating furnace is released until the pressure in the regenerative heating furnace reaches a preset pressure value; S200: closing the first nitrogen purge valve, opening the first relief valve, and unloading the pressure in the regenerative heating furnace; S300: Open the first double gate valve on the furnace gas delivery branch pipeline, keep the first cut-off valve closed, open the first nitrogen purge valve, and purge and replace the high-pressure, explosive, and high-temperature gas in the regenerative heating furnace , until the carbon monoxide content in the flue gas conveying branch pipeline reaches the standard, and the emission is completed; S400: Open the first double gate valve of the furnace gas delivery branch pipeline, open the first cut-off valve, open the first regulating valve, close the first nitrogen purge valve, close the first relief valve, and open the first combustion air branch pipeline at the same time Two double gate valves, open the second cut-off valve, open the second regulating valve, close the second nitrogen purge valve, close the second relief valve, so that the furnace gas enters the regenerative heating furnace through the first heat exchanger, so that Combustion-supporting air enters the regenerative heating furnace through the second heat exchanger, so that the regenerative heating furnace enters a combustion state; The mode of turning the furnace into a furnace is as follows: Close the first regulating valve, close the first shut-off valve, close the second regulating valve, close the second shut-off valve, keep the first double gate valve open, keep the second double gate valve open, open the first nitrogen purge valve, Open the second nitrogen purge valve to purge the furnace gas delivery branch pipeline and the combustion air branch pipeline, and open the fourth nitrogen purge valve and the fifth nitrogen purge valve at the same time, when the first preset time Afterwards, the first double gate gate valve and the second double gate gate valve are closed, and after the second preset time, the first nitrogen purge valve of the furnace gas delivery branch pipeline is closed, and the first relief valve is opened; Close the second nitrogen purge valve of the combustion-supporting air branch pipeline, open the second relief valve, and close the double gate valve on the flue gas delivery branch pipeline at the same time, and the regenerative heating furnace is converted from a burning furnace to a stuffy furnace; The working mode of the stuffy furnace transfer air supply is: Open the third cut-off valve, open the third nitrogen purge valve, and carry out nitrogen purge on the high-pressure strong explosive low-temperature gas delivery pipeline. After the purge is completed, close the third nitrogen purge valve; Open the pressure equalizing valve, when the pressure in the regenerative heating furnace reaches the preset pressure value, close the pressure equalizing valve, open the fourth double gate valve, and send the high-pressure, explosive and high-temperature gas pipeline into the storage In a heating furnace; The working mode of described air-supply rotary furnace is: Close the high-pressure strong explosive high-temperature gas valve, the fourth double gate valve and the third cut-off valve, open the third nitrogen purge valve, and the regenerative heating furnace changes from air supply to stuffy furnace mode.

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