Isolating device for blown gas reclaiming valve
An isolation device and blowing gas technology, applied in the manufacture of combustible gas, climate sustainability, petroleum industry, etc., can solve the problems of explosion accidents, blowing gas recovery system and gas furnace production system can not be completely and effectively isolated, easy to deform, etc. , to achieve the effect of security
Inactive Publication Date: 2012-06-20
ANHUI HUAIHUA
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Problems solved by technology
In the blowing stage, the air enters from the bottom of the gas furnace, and the blowing air generated in the furnace comes out from the top of the furnace and enters the cyclone dust collector through the upper air channel. The gas furnace is respectively equipped with a blowing gas recovery valve, that is, the blowing gas after being dedusted by the cyclone dust collector passes through the blowing gas recovery valve and then enters the blowing gas recovery main pipe, although the blowing gas has been dedusted by cyclone dust removal before passing through the blowing gas recovery valve , but there is still a certain amount and a certain particle size of the carried-out matter, which will inevitably wear the sealing surface of the valve port, and the amount of wear is proportional to the passing speed of the blowing air; at the same time, because the blowing air recovery valve is frequently used at 350 ° C for a long time closed, easily deformed
The above two reasons lead to the decline of the sealing performance of the valve port, and there are certain disadvantages: First, due to the poor sealing performance, the blowing gas recovery valve will leak through the upward gas and downward blowing steam, resulting in unnecessary leakage loss, and the light one sacrifices waste heat Centralized recovery should have the benefits, but it will endanger safe production and even cause explosion accidents; second, because each gas furnace shares a centralized recovery device for waste heat of blowing gas, when one of the gas furnaces is shut down for maintenance, the waste heat of blowing gas will be concentrated The recovery device still needs to work, and the deterioration of the sealing performance of the blowing gas recovery valve will cause the waste heat generated by the gas furnace under production to flow into the furnace body under maintenance, causing personal injury to the maintenance personnel, that is, the production of the blowing gas recovery system and gas furnace The system cannot be fully and effectively isolated
Method used
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Embodiment 1
[0020] Such as figure 1 As shown, the water seal is a U-shaped water seal 7, including a U-shaped pipe body 71, and the two ends of the pipe body of the U-shaped water seal 7 are respectively connected with the outlet of the blowing air recovery valve 1 and the blowing air recovery main pipe 2. The water seal 7 is respectively provided with a water filling valve 4 , an overflow valve 5 and a drain valve 6 .
Embodiment 2
[0022] Such as figure 2 As shown, the water seal is a box type water seal 8, including a box body 81 and first and second pipelines 82, 83, one end of the first and second pipelines 82, 83 stretches into the box body 81, the first and second The other ends of the pipelines 82 and 83 are respectively connected with the outlet of the blowing air recovery valve 1 and the blowing air recovery main pipe 2, and the van water seal 8 is respectively provided with a water filling valve 4, an overflow valve 5, a drain valve 6 and a cleaning port 9 .
[0023] The specific working process is as follows:
[0024] During normal production, the water filling valve, overflow valve and water drain valve of the water seal are closed, no water is added to the water seal, the blowing air enters the blowing gas recovery main pipe from the water seal and mixes with the blowing air from other gas furnaces, and the waste heat of the blowing air enters the blowing gas for centralized recovery The d...
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The invention relates to an isolating device for a blown gas reclaiming valve, which comprises the blown gas reclaiming valve, wherein the blown gas reclaiming valve is connected with a blown gas reclaiming main pipe; the blown gas reclaiming main pipe is connected with a blown gas reclaiming residual heat centralized reclaiming device; a water seal, through which the outlet of the blown gas reclaiming valve is connected with the blown gas reclaiming main pipe, is arranged between outlet of the blown gas reclaiming valve and the blown gas reclaiming main pipe; and a feed valve, an overflow valve and a drainage and blowdown valve are arranged on the water seal respectively. According to the technical scheme, as the water seal is arranged between the blown gas reclaiming valve and the blown gas reclaiming main pipe, when a furnace is needed to be shut down for maintenance, the feed valve on the water seal is opened, a blown gas reclaiming system of the furnace is effectively isolated from other gas production systems of the furnace through the water in the water seal, and the blown gas produced by the gas production systems cannot enter into a furnace body to be maintained, so as to guarantee the safety of maintenance personnel.
Description
[0001] technical field [0002] The invention relates to an isolating device, in particular to an isolating device used for a blowing gas recovery valve in a gas furnace. [0003] Background technique [0004] The fixed bed gas production process uses coal or coke as raw material, and adopts the atmospheric pressure intermittent gas production process to produce semi-water gas and water gas, which are used for the production of ammonia and methanol systems. In the production process of gas, the gas furnace is divided into five stages in a working cycle: blowing, blowing up, blowing down, blowing up twice, and air blowing. In the blowing stage, the air enters from the bottom of the gas furnace, and the blowing air generated in the furnace comes out from the top of the furnace and enters the cyclone dust collector through the upper air channel. The gas furnace is respectively equipped with a blowing gas recovery valve, that is, the blowing gas after being dedusted by the cy...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C10J3/22C10J3/72
CPCY02P20/10Y02P20/129
Inventor 陆军周静
Owner ANHUI HUAIHUA