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CN-224226943-U - Device for heating coal gas by utilizing residual heat of rising pipe

CN224226943UCN 224226943 UCN224226943 UCN 224226943UCN-224226943-U

Abstract

The utility model relates to the technical field of coking equipment, in particular to a device for heating coal gas by utilizing waste heat of a rising pipe. The gas inlet main pipe is positioned at the upper part of the device and connected with the upper end of the gas pipe through the gas inlet branch pipe, and the gas outlet main pipe is positioned at the lower part of the device and connected with the lower end of the gas pipe through the gas outlet branch pipe. The heat exchange medium is coal gas, the raw coal gas is used for heating the coal gas, raise the temperature of gas and reduce the heating gas consumption of coke oven.

Inventors

  • DUAN MENGLIN
  • XIAO CHANGZHI

Assignees

  • 中冶焦耐(大连)工程技术有限公司

Dates

Publication Date
20260512
Application Date
20250320

Claims (9)

  1. 1. The utility model provides a device of utilization tedge waste heat heating coal gas which characterized in that: Comprises a riser body, a gas pipe, a gas inlet branch pipe, a gas inlet main pipe, a gas outlet branch pipe and a gas outlet main pipe; The rising pipe body is a vertical cylinder, the lower part is a raw gas inlet, and the upper part is a raw gas outlet; The upper end and the lower end of the gas pipe are bent pipes, the middle part of the gas pipe is a straight pipe, and the gas pipe is in a cylindrical shape and is fixedly connected to the side wall of the ascending pipe body; The gas inlet main pipe is positioned at the upper part of the device and is connected with the upper end of the gas pipe through a gas inlet branch pipe; the gas outlet header pipe is positioned at the lower part of the device and is connected with the lower end of the gas pipe through the gas outlet branch pipe.
  2. 2. The apparatus for heating gas using residual heat from a riser as set forth in claim 1, wherein: The device also comprises a flange, wherein the flange is fixedly connected with the upper end and the lower end of the riser body.
  3. 3. The apparatus for heating gas using residual heat from a riser as set forth in claim 1, wherein: The gas pipe is a vertical pipe which is connected in a staggered way up and down through a 180-degree elbow and is cylindrical, the upper end of the gas pipe is a gas inlet, and the lower end of the gas pipe is a gas outlet.
  4. 4. The apparatus for heating gas using residual heat from a riser as set forth in claim 1, wherein: and an insulating layer is arranged on the outer side of the rising pipe body.
  5. 5. The apparatus for heating gas using residual heat from a riser as set forth in claim 1, wherein: The gas pipe is embedded in the ascending pipe body, and the ascending pipe body is fixedly connected into a whole by an upper part and a lower part.
  6. 6. The apparatus for heating gas using residual heat from a riser as set forth in claim 1, wherein: The gas inlet branch pipe is provided with a gas inlet valve, and the gas outlet branch pipe is provided with a gas outlet valve.
  7. 7. The apparatus for heating gas using residual heat from a riser as set forth in claim 1, wherein: The device also comprises two coal gas purging pipes, wherein one end of one coal gas purging pipe is communicated with the coal gas inlet branch pipe, the other end of the other coal gas purging pipe is communicated with the ascending pipe body, one end of the other coal gas purging pipe is communicated with the coal gas outlet branch pipe, and the other end of the other coal gas purging pipe is communicated with the ascending pipe body.
  8. 8. The apparatus for heating gas using residual heat from a riser as set forth in claim 7, wherein: The upper part and the lower part of the ascending pipe body are respectively provided with holes between the gas pipes, the outer part of the ascending pipe body is fixedly connected with a semi-circular pipe, and the ascending pipe body is connected with a gas purging pipe to form a gas cavity; and the inside of the opening is fixedly connected with a half pipe, and the gas in the gas cavity sweeps the inside of the ascending pipe body up and down along the half pipe through the opening to form scale.
  9. 9. The apparatus for heating gas using residual heat from a riser as set forth in claim 7, wherein: And a purging pipe valve is arranged on the gas purging pipe.

Description

Device for heating coal gas by utilizing residual heat of rising pipe Technical Field The utility model relates to the technical field of coking equipment, in particular to a device for heating coal gas by utilizing waste heat of a rising pipe. Background The heat loss in the coking process mainly comprises 4 parts of furnace outlet red Jiao Xianre, raw gas sensible heat, coke oven flue gas sensible heat and furnace body surface heat dissipation. The temperature of the raw coke oven gas is about 650-750 ℃, and the sensible heat of the raw coke oven gas accounts for about 36% of the heat distribution of the coke oven. The method for treating the raw gas in the coking industry at the present stage is to spray a certain amount of circulating ammonia water at 70-75 ℃ to the raw gas, and the raw gas can be recycled and treated by the chemical production section along with the heat absorption and evaporation of the circulating ammonia water and the reduction of the temperature of the raw gas. Such process treatment results in serious waste of raw gas sensible heat. The coke oven raw gas waste heat utilization technology is an environment-friendly new technology for recovering the sensible heat of raw gas, realizing energy conservation and emission reduction and creating economic benefits. However, deformation and leakage are easy to occur in the application process of the coke oven riser waste heat utilization technology. And when the problems occur, the working medium cannot be prevented from entering the carbonization chamber of the coke oven, and the safety and stability of the coke oven production cannot be ensured. Meanwhile, the temperature (more than or equal to 450 ℃) of the inner wall of the riser evaporator cannot be effectively controlled, a large amount of tar condensation temperature area cannot be avoided, and the problems of coking oil in the riser, graphitization blocking of the riser and environmental protection (smoking) caused by the coking oil in the riser are easily caused. Disclosure of utility model In order to overcome the defects in the prior art, the utility model provides a device for heating coal gas by utilizing the waste heat of the rising pipe, wherein a heat exchange medium is coal gas, and the raw coal gas is used for heating the coal gas, so that the temperature of the coal gas is increased, and the consumption of the coke oven for heating the coal gas is reduced. In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme: A device for heating coal gas by utilizing waste heat of a rising pipe comprises a rising pipe body, a coal gas pipe, a coal gas inlet branch pipe, a coal gas inlet main pipe, a coal gas outlet branch pipe and a coal gas outlet main pipe, wherein the rising pipe body is a vertical cylinder, the lower part of the rising pipe body is a raw coal gas inlet, the upper part of the rising pipe body is a raw coal gas outlet, the upper end and the lower end of the coal gas pipe are bent pipes, the middle part of the coal gas pipe body is a straight pipe, the coal gas pipe is cylindrical and fixedly connected to the side wall of the rising pipe body, the coal gas inlet main pipe is positioned at the upper part of the device and is connected with the upper end of the coal gas pipe through the coal gas inlet branch pipe, and the coal gas outlet main pipe is positioned at the lower part of the device and is connected with the lower end of the coal gas pipe through the coal gas outlet branch pipe. Further, the lifting pipe comprises a flange fixedly connected with the upper end and the lower end of the lifting pipe body. Further, the gas pipe is a vertical pipe which is connected in a staggered way up and down through a 180-degree elbow and is cylindrical, the upper end is a gas inlet, and the lower end is a gas outlet. Further, an insulating layer is arranged on the outer side of the rising pipe body. Further, the gas pipe is embedded in the ascending pipe body, and the ascending pipe body is fixedly connected into a whole by an upper part and a lower part. Further, the gas inlet branch pipe is provided with a gas inlet valve, and the gas outlet branch pipe is provided with a gas outlet valve. The gas purging device further comprises two gas purging pipes, one end of each gas purging pipe is communicated with the gas inlet branch pipe, the other end of each gas purging pipe is communicated with the ascending pipe body, one end of each gas purging pipe is communicated with the gas outlet branch pipe, and the other end of each gas purging pipe is communicated with the ascending pipe body. Further, the upper part and the lower part of the rising pipe body are respectively provided with holes between the gas pipes, the outer part of the rising pipe body is fixedly connected with a semi-circular pipe and is connected with a gas purging pipe to form a gas cavity, the inner part of the holes is fixedly connected with a semi-pipe