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System and method for online independently cutting off water supply of ascending pipe heat exchangers

A single, heat exchanger technology, applied in the field of waste heat utilization devices, can solve the problems of increasing tensile force, increasing the bearing capacity of the steel column 700 on one side of the coke oven, increasing the backup pipe network, etc.

Active Publication Date: 2018-05-04
江苏龙冶节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] More importantly, if figure 2 As shown, the riser heat exchanger system pipe network and gas collecting pipes are installed on the bracket 701 connected to the steel column 700 on the side of the coke oven. Adding a spare pipe network will further increase the bearing capacity of the steel column 700 on the side of the coke oven. , so that the upper part of the coke oven tightens the tension of the horizontal braces 702 of the steel columns 700 on both sides of the coke oven to increase, so that the horizontal braces 702 yield and fail under the action of tension

Method used

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  • System and method for online independently cutting off water supply of ascending pipe heat exchangers
  • System and method for online independently cutting off water supply of ascending pipe heat exchangers
  • System and method for online independently cutting off water supply of ascending pipe heat exchangers

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Embodiment 1

[0035] See image 3 As shown, the present invention discloses a system for separately cutting off the water supply of the riser heat exchanger online, and at most five riser heat exchangers are grouped into a group, so that the riser heat exchangers are installed in parallel in the water inlet branch pipe 406 Between the return flow branch pipe 306 and the high-temperature flue gas from the carbonization chamber 101 flows into the bottom of the riser heat exchanger 100 , and is introduced into the gas collecting pipe 201 through the bridge pipe 200 . Saturated water passes through the main water inlet pipe 408 and each main water inlet valve 407, and is distributed to the water inlet branch pipe 406 of each group of riser heat exchangers, and then passes through the capillary water inlet pipe 403 and the primary water inlet valve 404 into the riser heat exchanger 100 In the heat exchange layer, the water in the heat exchange layer and the high-temperature flue gas exchange hea...

Embodiment 2

[0051] Embodiment 2, a method for separately cutting off the water supply of the riser heat exchanger online, or may include the following steps:

[0052] b1. Close the heat exchanger with the riser through the capillary water inlet pipe 403 a Connected primary water inlet valve 404 a ;

[0053] b2. Close the return valve 302 connected with the capillary return of the riser heat exchanger in the riser heat exchanger group a , and open the branch safety valve 301 corresponding to the riser heat exchanger a , and at the same time close the total return valve 308 communicating with the return branch pipe 306, and the riser heat exchangers in the same group that have not cut off the water supply are connected to the safety valve 301 b It can automatically bounce open under the action of steam pressure, so that the generated steam can be released through the emergency pipe;

[0054] b3. Open the secondary relief valve 310a connected to the capillary return pipe, and isolate the...

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Abstract

The invention provides a system and method for online independently cutting off water supply of ascending pipe heat exchangers. At most five ascending pipe heat exchangers are set into one group and are arranged between a water inlet branch pipe and a backflow branch pipe in parallel. At least one segmented emergency pipe is connected with capillary backflow pipes and capillary water inlet pipes of the ascending pipe heat exchangers in the same set. The two ends of the emergency pipe are connected with a water supplementing pump and a water drainage pipe net correspondingly. The emergency pipecomprises a plurality of segments, and stop valves arranged among the segments, the water supplementing pump and the water drainage pipe set. The system and method are used for online independently cutting off water supply of the ascending pipe heat exchangers under the situation that the total net weight of an ascending pipe heat exchanger system pipe net is not greatly increased.

Description

technical field [0001] The invention relates to the field of waste heat utilization devices, in particular to a system and method for separately cutting off the water supply of riser heat exchangers online. Background technique [0002] The raw gas temperature at the outlet of the coking chamber of the coke oven ascending pipe is about 750°C. The raw coal gas enters the bridge pipe after passing through the ascending pipe, and enters the gas collecting pipe after being cooled by sprayed ammonia water in the bridge pipe section. At this time, the raw gas temperature drops to 85°C. The heat taken away by raw gas accounts for 36% of the total heat of coking. In order to recover this part of the heat, at present, four types of rising pipe waste heat utilization systems are used in China: 1. An annular jacket is welded on the outer wall of the rising pipe, soft water is introduced into the lower part of the jacket, and heat is exchanged between the water in the jacket and the hot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D17/00F22B1/18C10B27/00
CPCC10B27/00F22B1/1838F27D17/004F27D2017/006Y02P10/25
Inventor 刘建成汪琴孟晓东高远孔秀宽高越
Owner 江苏龙冶节能科技有限公司