CN204824725U - High -efficient, prevent chute blockage and carry matter gyration reacting furnace - Google Patents

Abstract

The purpose of the utility model is to provide a high-efficiency, anti-clogging coal upgrading rotary reaction furnace, which includes a feed gas guide device, a discharge device, a rotary furnace body, an external heating jacket, and the like. The utility model has the advantages of preventing the dust blockage of the air guide pipe and coking of the pipe wall, reducing the sealing size of the furnace head, increasing the heat exchange area, and improving the heat transfer efficiency; it can adjust the discharge speed according to the reaction situation, and reduce the sealing size of the furnace tail .

Description

A high-efficiency, anti-clogging coal upgrading rotary reaction furnace

technical field

The invention belongs to the technical field of coal chemical industry, and in particular relates to an industrialized production equipment for coal pyrolysis upgrading by using a rotary furnace.

technical background

my country is a country rich in coal resources but relatively scarce in oil and natural gas resources. In recent years, with the deterioration of the atmospheric environment in northern my country, in order to reduce the direct combustion and utilization of coal, the technology of converting coal into oil or gas has attracted more and more attention from domestic scholars. At present, there are many methods for converting coal into oil or gas, mainly including direct or indirect liquefaction of coal to produce oil or gas. However, this method requires large investment, high energy consumption, and low efficiency; in addition, there are traditional vertical furnaces A method of coal pyrolysis, but this method also has disadvantages such as low oil yield and inability to process pulverized coal.

Nowadays, many domestic institutions and scholars have begun to study the method of using rotary furnace equipment for coal pyrolysis and upgrading to produce coal tar, gas and upgraded coal. This method has low investment, high oil and gas production rates, and can process pulverized coal. and other advantages, so it has a good prospect and has been paid more and more attention. However, the heat transfer efficiency of domestic coal pyrolysis upgrading rotary furnaces is generally low, and due to the high dust content in the mixed gas generated by the reaction, the conductive Gas pipelines are prone to coking and dust clogging, which is also one of the key problems that plague the industrialized and stable operation of the rotary furnace coal pyrolysis upgrading process.

Contents of the invention

The utility model provides a high-efficiency, anti-clogging coal upgrading rotary reaction furnace, which can prevent dust blockage while improving the heat transfer efficiency of the rotary reaction furnace through the improvement of equipment.

The utility model relates to a high-efficiency, anti-clogging coal upgrading rotary reaction furnace, comprising a feeding gas guiding device, a discharging device, a rotary furnace body 6, and an external heating jacket 9;

The feed gas guide device includes a feed port 1, a gas guide port 2, and a ribbon conveyor 3, and the feed gas guide device is arranged at the burner position of the rotary furnace body 6, and is used for coal feed transportation And the export of reaction gas, the screw belt conveyor 3 exports the reaction gas in the furnace while transporting the solid material.

Furthermore, the rotary furnace body 6 is a reactor for pyrolysis and upgrading of coal, and the inside of the rotary furnace body 6 is provided with a spiral plate 7. During the rotation of the rotary furnace body 6, materials pass through the spiral plate 7. The rotation of the plate 7 moves from the furnace head to the furnace tail.

Furthermore, several heating pipes 8 are arranged along the material conveying direction at the front of the rotary furnace body 6, and the inlet and outlet of the heating pipes 8 are welded on the furnace wall and communicate with the external heating jacket (9).

Furthermore, the outer heating jacket 9 is arranged outside the rotary furnace body 6 to provide heat for pyrolysis and upgrading of coal, and the outer heating jacket 9 is provided with a flue gas inlet 10 and a flue gas At the outlet 4, several flue gas splitters 11 are arranged at the flue gas inlet 10. Under the action of the flue gas splitters 11, the flue gas is divided into three paths, one of which passes through the outer heating jacket 9 Move toward the furnace head, the second one moves toward the furnace head through the heating tube 8, the third one moves toward the furnace tail through the external heating jacket 9, and a wind regulating device is installed at the flue gas outlet 4. Plate 5, which can adjust the distribution ratio of the three-way flue gas according to the material reaction.

Furthermore, the discharging device is arranged at the tail end of the rotary furnace body 6, which is used for discharging and transporting the upgraded coal generated by the upgrading reaction, and the discharging device includes a screw conveyor 13, the The screw conveyor 13 extends into the rotary furnace body 6, and several copying boards 12 are arranged at the end of the rotary furnace body 6. As the furnace body rotates, the copying boards 12 pick up and transfer the materials to The inside of the screw conveyor 13 is transported to the outside of the furnace by the screw conveyor 13.

The utility model has the following advantages:

(1) The utility model uses a spiral belt conveyor for air conduction. This air conduction method can prevent dust blockage and pipe wall coking in the air conduction pipeline. At the same time, it can also combine the feeding system and the air conduction system into one, Thereby reducing the size of the burner seal.

(2) Several heating tubes are arranged in the rotary furnace body of the utility model, which increases the heat exchange area and improves the thermal efficiency, and the setting of the flue gas splitter and the air regulating plate makes the amount of flue gas distribution in the jacket and the heating tube Can be adjusted as needed.

(3) The discharge at the end of the furnace adopts a spiral discharge device, which can adjust the discharge speed according to the feeding amount and reaction conditions, and at the same time reduces the size of the sealing part of the furnace end.

Description of drawings

Fig. 1 is a structural schematic diagram of a high-efficiency anti-blocking coal upgrading rotary reaction furnace;

Fig. 2 is A-A sectional view;

Fig. 3 is B-B sectional view;

The codes in the drawings indicate: 1-feed inlet; 2-air guide port; 3-screw belt conveyor; 4-flue gas outlet; Heating pipe; 9-external heating jacket; 10-flue gas inlet; 11-flue gas splitter; 12-copy board; 13-screw conveyor;

Detailed ways

As shown in FIG. 1 , an anti-blocking and high-efficiency coal upgrading rotary reaction furnace mainly includes a feed gas guide device, a discharge device, a rotary furnace body 6 , and an external heating jacket 9 .

As shown in Figure 1, the feed gas guide device is installed at the furnace head position of the rotary furnace body 6, and is used for coal feed transportation and reaction gas export during the upgrading process. The main part of the feed gas guide device is a spiral belt conveyor The upper part of the screw belt conveyor 3 is provided with a feed port 1 and a gas guide port 2, and the screw belt conveyor 3 guides the reaction gas in the furnace while transporting solid materials, in order to prevent the flow of the reaction gas during the gas guide process To cause dust, the flow velocity of the reaction gas in the screw conveyor should be less than 20m/s, and as low as possible, the material filling rate in the screw conveyor should be less than 30%, and the cylinder size of the screw conveyor 3 is determined by the reaction gas velocity Sure.

As shown in Figure 1, the rotary furnace body 6 provides a reaction space for coal pyrolysis and upgrading. The inside of the rotary furnace body 6 is provided with a spiral plate 7. During the rotation of the rotary furnace body 6, the material moves from the furnace head to the furnace tail. Due to the setting of the spiral plate 7, the residence time of the material in the furnace can be adjusted by adjusting the speed of the furnace body according to the reaction situation.

As shown in Figure 1 and Figure 2, since the front part of the rotary furnace body 6 is a reaction zone, more heat exchange area is needed, therefore, several heating tubes 8 are also arranged in the front part of the furnace, and the inlet of the heating tubes 8 The outlet is welded on the furnace wall and communicates with the outer heating jacket 9, and the rear part of the rotary furnace body 6 is a heat preservation area. Therefore, heating pipes are generally not provided, and heating pipes can also be provided if required by the process.

As shown in Figure 1, the outer heating jacket 9 is arranged on the outside of the rotary furnace body 6 to provide heat for coal pyrolysis and upgrading. The outer heating jacket 9 is provided with a flue gas inlet 10 and a flue gas outlet 4, and at the same time A number of flue gas splitters 11 are arranged at the flue gas inlet 10. Under the action of the flue gas splitters 11, the flue gas is divided into three parts, which respectively move to the furnace head through the jacket 9 and to the furnace head through the heating tube 8. Direction movement, through the jacket 9 to move to the furnace tail direction, the air regulating plate 5 is set at the position of the flue gas outlet 4, and the distribution ratio of the three parts of the flue gas can be adjusted according to the reaction of the materials.

As shown in Fig. 1 and Fig. 3, the discharge device is arranged at the furnace tail of the rotary furnace body, and is used for the discharge and transportation of the upgraded coal generated by the reaction. The main part of the discharge device is a screw conveyor 13, and the screw conveyor 13 extends into the furnace of the rotary furnace body 6, and several copying boards 12 are arranged at the tail of the furnace body. As the furnace body rotates, the copying boards 12 pick up the materials and pour them into the screw conveyor 13, and the materials are picked up by the screw conveyor 13. The conveyor 13 conveys to the outside of the furnace.

Claims (5)

1. A high-efficiency, anti-clogging coal upgrading rotary reaction furnace, including a feed gas guide device, a discharge device, a rotary furnace body (6), and an external heating jacket (9); The feed gas guide device includes a feed inlet (1), a gas guide port (2), and a screw conveyor (3), and the feed gas guide device is arranged at the burner position of the rotary furnace body (6) , used for coal feed transport and reaction gas export, the screw belt conveyor (3) exports the reaction gas in the furnace while transporting solid materials. 2. The high-efficiency, anti-clogging coal upgrading rotary reaction furnace according to claim 1, characterized in that, the rotary furnace body (6) is a reactor for coal pyrolysis and upgrading, and the rotary furnace body (6) A spiral plate (7) is arranged inside, and during the rotation process of the rotary furnace body (6), materials move from the furnace head to the furnace tail through the rotation of the spiral plate (7). 3. The high-efficiency, anti-clogging coal upgrading rotary reaction furnace according to claim 1 is characterized in that, several heating pipes (8) are also arranged along the material conveying direction at the front of the rotary furnace body (6), so that The inlet and outlet of the heating pipe (8) are welded on the furnace wall and communicate with the outer heating jacket (9). 4. The high-efficiency, anti-clogging coal upgrading rotary reaction furnace according to claim 1, characterized in that, the external heating jacket (9) is arranged outside the rotary furnace body (6) for heating the coal Heat is provided by pyrolysis and upgrading. The outer heating jacket (9) is provided with a flue gas inlet (10) and a flue gas outlet (4), and at the same time, several flue gas The flow divider (11), under the action of the flue gas flow divider (11), divides the flue gas into three paths, one of which passes through the outer heating jacket (9) to move toward the furnace head, and the second path passes through the The heating pipe (8) moves toward the furnace head, and the third pipe moves toward the furnace end through the outer heating jacket (9), and an air regulating plate (5) is arranged at the flue gas outlet (4). The distribution ratio of the three-way flue gas can be adjusted according to the material reaction. 5. The high-efficiency, anti-clogging coal upgrading rotary reaction furnace according to claim 1, characterized in that, the discharge device is arranged at the tail end of the rotary furnace body (6), and is used for the quality upgrading reaction to generate The discharge transportation of the upgraded coal, the discharge device includes a screw conveyor (13), and the screw conveyor (13) extends into the rotary furnace body (6), and the rotary furnace body ( 6) The end of the furnace is provided with a number of copying boards (12), and as the body of furnace rotates, the copying boards (12) pick up and transfer the material to the screw conveyor (13), and the screw conveyor (13) transported to the outside of the furnace.