Heat-exchange type ascending tube and coke oven

A heat-exchanging, coke oven technology, applied in the coking field, can solve the problems of increased water consumption in the condensing blast section, increased raw gas recovery costs, and increased ammonia water consumption, so as to reduce industrial water consumption, reduce energy consumption, and reduce The effect of usage

Active Publication Date: 2014-01-15
HUATAI YONGCHUANG BEIJING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Before the raw gas enters the bridge pipe, its heat is not utilized, which causes a waste of energy; moreover, the raw gas is cooled in the bridge pipe with 0.15MPa ammonia water, and the higher temperature of the raw gas not only increases the consumption of ammonia water; Moreover, in the process of cooling the raw gas, part of the ammonia water is vaporized and mixed with the raw gas, thereby increasing the volume of the raw gas, which will lead to an increase in the water consumption of the subsequent condensing blast section, thereby increasing energy consumption and increasing the waste gas. gas recovery cost

Method used

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  • Heat-exchange type ascending tube and coke oven

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The heat-exchanging riser pipe provided in Embodiment 1 is used to connect the coke oven carbonization chamber and the bridge pipe, so as to introduce the raw coal gas discharged from the coke oven carbonization chamber into the bridge pipe for cooling. Different from the prior art, when the raw coal gas flows through the heat exchange riser, part of the heat is recycled.

[0024] figure 1 It is a structural schematic diagram of a heat exchange riser according to Embodiment 1 of the present invention. like figure 1 As shown, the heat-exchanging riser includes an inner pipe 1 and an outer pipe 2. The inner pipe 1 is used to transport raw gas, and both ends of the inner pipe are provided with flanges 3 for connecting the coke oven carbonization chamber and the bridge pipe. The connection between the coking chamber of the coke oven and the bridge pipe can also use other connecting parts except the flange.

[0025] The outer tube 2 is sleeved on the outside of the inner ...

Embodiment 2

[0035] Embodiment 2 provides a coking oven, figure 2 It is a partial structural schematic diagram of the coke oven in Example 2 of the present invention. like figure 2As shown, the coke oven includes a coke oven carbonization chamber 21, a riser pipe 22 and a bridge pipe 23. One end of the riser pipe 22 communicates with the coke oven carbonization chamber 21, and the other end of the riser pipe 22 communicates with the bridge pipe 23. The raw coal gas that 21 discharges enters bridge pipe 23 through riser pipe 22. In the second embodiment, the riser 22 adopts the heat exchange type riser described in the first embodiment, the temperature of the raw coal gas can be reduced by means of the heat exchange type riser, and part of the heat in the raw gas can be recovered and utilized.

[0036] In the coke oven provided in Example 2, the riser pipe used to connect the coke oven carbonization chamber and the bridge tube adopts the heat exchange type riser pipe provided by the pre...

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Abstract

The invention provides a heat-exchange type ascending tube and a coke oven. The heat-exchange type ascending tube comprises an inner tube for conveying raw coke oven gas; both ends of the inner tube are respectively communicated with a coke oven carbonization chamber and a crossover tube. The heat-exchange type ascending tube also comprises an outer tube. The outer tube is arranged on the outer side of the inner tube; a cooling accommodating cavity is formed between the outer tube and the inner tube; the outer tube is provided with an input port and an output port which are communicated with the cooling accommodating cavity; a gas-state cooling medium for recycling heat in the raw coke oven gas goes into the cooling accommodating cavity from the input port and then flows out of the cooling accommodating cavity from the output port; the inner side of the inner tube is provided with a spiral guide rod arranged along the axial direction of the inner tube. The heat-exchange type ascending tube not only can reduce the temperature of the raw coke oven gas and recycle a part of heat in the raw coke oven gas, but also can reduce the usage amount of ammonia water and decrease the recycling cost of the raw coke oven gas.

Description

technical field [0001] The invention belongs to the field of coking and relates to auxiliary equipment for coke ovens, in particular to a heat-exchanging riser for a coke oven and a coke oven including the heat-exchange riser. Background technique [0002] In the field of coking, the recovery of raw coal gas can not only reduce air pollution, but also effectively utilize the beneficial components such as benzene and naphthalene in raw coal gas, thereby saving energy. [0003] Common raw gas recovery methods are as follows: After the raw gas is discharged from the coke oven carbonization chamber at a temperature of 650-700°C, it enters the bridge tube through the riser pipe and is cooled to about 90°C. to recycle. [0004] Among them, the riser pipe is only used to connect the coke oven carbonization chamber and the bridge pipe, and the temperature of the raw gas entering the bridge pipe is still 650-700°C. In order to improve the recovery operation conditions of the raw gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B27/00F28D7/10F28F1/40
CPCY02P20/129
Inventor 徐列马科伟顾伟民
Owner HUATAI YONGCHUANG BEIJING TECH CO LTD
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