CN211425097U - Primary cooler - Google Patents

Abstract

The utility model discloses a primary cooler, which comprises a primary cooler tower body, a gas inlet is arranged at the top of the primary cooler tower body, a gas outlet is arranged at the bottom of the primary cooler tower body, and the upper and lower parts of the primary cooler tower body are arranged up and down. The upper circulating water cooling horizontal tube and the lower circulating water cooling horizontal tube are respectively provided. The inlet and outlet of the upper circulating water cooling horizontal tube and the lower circulating water cooling horizontal tube respectively pass through the side wall of the primary cooler tower, and are placed in the primary cooler. Outside the cooling tower body, it also includes a middle air-cooled cooling horizontal pipe, a filter and an induced draft fan. The middle air-cooled cooling horizontal pipe is installed in the primary cooler tower body between the upper circulating water cooling horizontal pipe and the lower circulating water cooling horizontal pipe. Inside; the inlet of the middle air-cooled cooling pipe is connected to the outlet of the filter, the outlet of the middle air-cooled cooling pipe is connected to the air inlet of the induced draft fan, and the air outlet of the induced draft fan is connected to the air inlet of the coke oven regenerator. Advantages: increase the air heat exchange in the middle section and improve the heat exchange efficiency; the air after heat exchange enters the coke oven regenerator to improve the coke oven efficiency.

Description

a primary cooler

Technical field:

The utility model relates to the field of energy saving and consumption reduction, in particular to a primary cooler.

Background technique:

Coal coking is also called high temperature coal retorting. Using coal as raw material, it is heated to about 950 degrees under the condition of isolating air. The coking process is mainly carried out in a coke oven. Modern coke ovens are mainly composed of three chambers and two areas, namely carbonization chamber, combustion chamber, regenerator, and chute. The function of the regenerator is to use the heat of the accumulated exhaust gas to preheat the air and lean gas required for coking in the coke oven. A coal conversion process in which coal is produced by high-temperature dry distillation in a coke oven, and coal gas, coal tar and other chemical products are recovered at the same time. Among them, the temperature of the gas discharged from the coke oven is about 750 degrees. After being sprayed and cooled by the circulating ammonia water, a saturated gas of 80-83 degrees is formed. For the subsequent gas purification, it needs to be cooled to 20-25 degrees by the primary cooler.

The commonly used primary coolers are horizontal tube primary coolers, which have several horizontal pipes inside, and the cooling water is cooled by a circulating refrigeration system and circulated in the pipes. The cooling water is divided into a first-stage cooling water and a second-stage cooling water. The temperature of the first-stage cooling water is generally 25-32 degrees, and it circulates in the upper part of the primary cooler; The second half loops. The hot gas enters from the top of the primary cooler, and then exits from the bottom. The hot gas encounters the cooling water in the horizontal tube in the primary cooler to cool down, so that the gas temperature of the primary cooler meets the requirements.

The above system has the following problems in the operation process: (1) The temperature of the cooling water in the first stage is higher than that of the cooling water in the second stage, and the heat exchange section between the first stage cooling and the second stage cooling is longer, resulting in low heat exchange efficiency for high temperature gas and poor cooling effect. , the circulating refrigeration system equipped with the first-stage cooling water outlet has high energy consumption; (2) Usually, the temperature of the first-stage cooling water in the upper part of the primary cooler is as high as 60 degrees after heat exchange. waste.

Utility model content:

The purpose of this utility model is to provide a primary cooler.

The utility model is implemented by the following technical solutions:

A primary cooler, comprising a primary cooler tower body, a gas inlet is provided at the top of the primary cooler tower body, a gas outlet is provided at the bottom of the primary cooler tower body, and a middle part of the primary cooler tower body is provided The upper and lower circulating water cooling horizontal pipes and the lower circulating water cooling horizontal pipes are respectively provided. It is placed on the outside of the primary cooler tower body, and it also includes a middle-section air-cooled cooling transverse pipe, a filter and an induced draft fan, and the middle-section air-cooled cooling transverse pipe is installed on the upper circulating water cooling transverse pipe and the lower section. The inside of the primary cooler tower body between the circulating water cooling horizontal tubes, the inlet and outlet of the middle air-cooled cooling horizontal tube pass through the side wall of the primary cooler tower body respectively, and are placed in the primary cooler outside the tower;

The inlet of the middle-section air-cooling and cooling horizontal pipe is connected with the outlet of the filter, the outlet of the middle-section air-cooling and cooling horizontal pipe is connected with the air inlet of the induced draft fan, and the air outlet of the induced draft fan is connected with the coke oven accumulator. The air inlet of the hot chamber is connected.

Preferably, it also includes a heating system; the outlet of the upper circulating water cooling horizontal pipe is communicated with the inlet of the circulating refrigeration system and the inlet of the heating system respectively through pipelines, and the outlet of the circulating refrigeration system is connected to the heating system. The outlet of the system is respectively communicated with the inlet of the upper circulating water cooling horizontal pipe through pipelines, and a heating control valve is provided on the pipeline between the outlet of the upper circulating water cooling horizontal pipe and the heating system.

The advantages of the utility model: increase the air-cooled heat exchange of the hot gas in the primary cooler tower body by the middle-section air-cooled cooling horizontal pipe, improve the effect of reducing the gas temperature, improve the heat exchange efficiency, and reduce the energy consumption of the circulating refrigeration system; The heated high-temperature air is discharged into the coke oven regenerative chamber, which can increase the temperature in the regenerative coke oven, improve the combustion efficiency of air and lean gas, and reduce energy consumption; secondly, in winter, the upper circulating water can be used to cool the horizontal pipe The high-temperature cooling water from the outlet is led into the heating system for heating the plant area, and the waste heat of the cooling water in the upper circulating water cooling horizontal pipe is effectively utilized to reduce the energy consumption of the heating system.

Description of drawings:

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Figure 1 is a schematic diagram of the overall structure of the present invention.

In the figure: coke oven regenerator 1, primary cooler tower 2, gas inlet 3, gas outlet 4, upper circulating water cooling horizontal pipe 5, lower circulating water cooling horizontal pipe 6, middle air-cooling cooling horizontal pipe 7, filtration 8, induced draft fan 9, heating system 10, heating control valve 11, and circulating refrigeration system 12.

Detailed ways:

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figure 1, a kind of primary cooler includes primary cooler tower body 2, a gas inlet 3 is provided at the top of primary cooler tower body 2, and a gas outlet 4 is provided at the bottom of primary cooler tower body 2. The upper and lower circulating water cooling horizontal pipes 5 and the lower circulating water cooling horizontal pipes 6 are respectively provided in the middle of the cooler tower body 2. The side wall of the cooler tower body 2 is placed outside the primary cooler tower body 2. It also includes a middle section air-cooled cooling cross pipe 7, a filter 8 and an induced draft fan 9, and the middle section air-cooled cooling cross pipe 7 is installed in the upper section for circulating water cooling. Inside the primary cooler tower body 2 between the horizontal tube 5 and the lower circulating water cooling horizontal tube 6, the inlet and outlet of the middle air-cooled cooling horizontal tube 7 pass through the side wall of the primary cooler tower body 2 respectively, and are placed in the primary cooler. outside of the tower body 2;

The inlet of the middle air-cooling and cooling horizontal pipe 7 is connected with the outlet of the filter 8, the outlet of the middle air-cooling and cooling horizontal pipe 7 is connected with the air inlet of the induced draft fan 9, and the air outlet of the induced draft fan 9 is connected with the air of the coke oven regenerator 1. Air inlet connection.

Air is introduced into the inlet of the mid-section air-cooled and cooled horizontal pipe 7 through the induced draft fan 9, and the filter 8 filters out impurities in the air. The hot gas in the middle is cooled by heat exchange, which improves the effect of reducing the temperature of the gas and improves the heat exchange efficiency; and after heat exchange, the air is discharged into the coke oven regenerator 1 from the outlet of the middle air-cooled cooling horizontal pipe 7, and the middle air-cooled cooling horizontal The air discharged from the pipe 7 is high-temperature air, which can increase the temperature in the coke oven, improve the combustion efficiency of the coke oven, and reduce energy consumption.

It also includes a heating system 10; the outlet of the circulating water cooling transverse pipe 5 in the upper section is communicated with the inlet of the circulating refrigeration system 12 and the inlet of the heating system 10 through pipelines, respectively, and the outlet of the circulating refrigeration system 12 and the outlet of the heating system 10 pass through respectively. The pipeline is communicated with the inlet of the upper circulating water cooling horizontal pipe 5 , and a heating control valve 11 is provided on the pipeline between the outlet of the upper circulating water cooling horizontal pipe 5 and the heating system 10 . Under normal circumstances, the cooling water after heat exchange in the upper circulating water cooling horizontal pipe 5 will first enter the circulating refrigeration system 12, and after the cooling water temperature is lowered, it will return to the upper circulating water cooling horizontal pipe 5 for cooling and heat exchange; The temperature of the cooling water from the outlet of the horizontal pipe 5 is as high as 60 degrees or more, so in winter, the cooling water from the outlet of the upper circulating water cooling horizontal pipe 5 can be led into the heating system 10, and then returned to the upper circulating water to cool the horizontal pipe 5 after heating. Re-enter the heat exchange work; the specific operation is to open the heating control valve 11, so that part of the cooling water from the outlet of the upper circulating water cooling horizontal pipe 5 enters the heating system 10; the cooling water waste heat of the upper circulating water cooling horizontal pipe 5 is effectively Utilize, reduce the energy consumption of the heating system 10 . The heating system 10 is used for each factory area, office building or dormitory.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the protection scope of the present invention.

Claims (2)

1. A primary cooler comprises a primary cooler tower body, a coal gas inlet is arranged at the top of the primary cooler tower body, a coal gas outlet is arranged at the bottom of the primary cooler tower body, an upper section of circulating water cooling transverse pipe and a lower section of circulating water cooling transverse pipe are respectively arranged at the upper part and the lower part of the middle part of the primary cooler tower body, the inlet and the outlet of the upper section of the circulating water cooling horizontal pipe and the lower section of the circulating water cooling horizontal pipe respectively penetrate through the side wall of the primary cooler tower body and are arranged outside the primary cooler tower body, it is characterized by also comprising a middle section air-cooled cooling horizontal pipe, a filter and a draught fan, wherein the middle section air-cooled cooling horizontal pipe is arranged in the primary cooler tower body between the upper section circulating water cooling horizontal pipe and the lower section circulating water cooling horizontal pipe, the inlet and the outlet of the middle air-cooled cooling transverse pipe respectively penetrate through the side wall of the primary cooler tower body and are arranged outside the primary cooler tower body;

the inlet of the middle section air-cooled cooling transverse pipe is connected with the outlet of the filter, the outlet of the middle section air-cooled cooling transverse pipe is connected with the air inlet of the draught fan, and the air outlet of the draught fan is connected with the air inlet of the coke oven regenerator.

2. A primary cooler as set forth in claim 1, wherein: it also includes a heating system; the outlet of the upper section of the horizontal circulating water cooling pipe is communicated with the inlet of the circulating refrigeration system and the inlet of the heating system through pipelines respectively, the outlet of the circulating refrigeration system and the outlet of the heating system are communicated with the inlet of the upper section of the horizontal circulating water cooling pipe through pipelines respectively, and a heating control valve is arranged on the pipeline between the outlet of the upper section of the horizontal circulating water cooling pipe and the heating system.

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