Connected two-way pressure stabilizing water seal device and operation method

Abstract

The invention relates to a communicating-type bidirectional pressure-stabilization water seal device and an operation method. The water seal device is divided into a left liquid storage cavity, a transition cavity and a right liquid storage cavity by a liquid storage cavity partition plate and a transition cavity partition plate which are internally arranged, wherein an atmospheric flow opening isformed in the upper part of the left liquid storage cavity, a liquid inlet is formed in the upper part of the right liquid storage cavity, and a liquid outlet and a drain outlet are formed in the middle lower part of the right liquid storage cavity; when the pressure of the right liquid storage cavity is increased, the water in the cavity can be automatically stored in the left liquid storage cavity, and a constant positive pressure is maintained; and when the pressure of the right liquid storage cavity is reduced, the water in the left liquid storage cavity can be automatically stored in theright side liquid storage cavity, and a certain negative pressure is maintained. The problem that the safety is poor due to the fact that the gas pressure in a closed system is changed in two directions is solved; and the defect that due to failure of a conventional overflow type water seal device caused by frequent pressure fluctuation, device production halt or safety accidents are caused is overcome. The communicating-type bidirectional pressure-stabilization water seal device has the characteristics of being simple in structure, safe and stable, low in cost, convenient to operate and capable of saving water resources.

Description

Technical field: [0001] The invention relates to a water-sealed bidirectional voltage stabilizing device and a working method, in particular to a water-sealed bidirectional stabilizing device and working method for sulfur-containing sewage in petroleum refining. Background technique: [0002] In the petrochemical industry, a large amount of sulfur-containing sewage produced by units such as hydrocracking and delayed coking needs to be settled in an atmospheric acidic water tank before entering the sour water stripping unit for advanced treatment. If the storage tank is sealed If it is not good, it will cause toxic volatile gas to be discharged into the atmosphere, causing serious air pollution and personnel poisoning, and even the mixture of light hydrocarbon components and combustible gas with air can cause explosion accidents. In order to avoid the phenomenon of toxic and harmful gas emission or the tank being pumped out due to factors such as temperature difference, inlet...

AI Technical Summary

Problems solved by technology

There is a sealing plate in the middle of the water-sealed tank body, which divides the tank body into upper and lower chambers. When the pressure fluctuates, the water in the upper chamber flows into the lower chamber and overflows to the water outlet through the lower chamber. Timely and frequent replenishment of fresh water, wasting water resources

When the pressure breaks and the fresh water is not replenished in time, the flammable gas in the tank will come into contact with the air, causing an explosion accident

[0004] CN201404750Y discloses a method in which two water-sealed tanks are connected in parallel to a storage tank that needs to be stabilized, which solves the defect in CN2730762Y that a single water-sealed tank is prone to failure, resulting in device shutdown or safety accidents

However, this method increases equipment investment, and does not fundamentally change the shortcoming that this kind of water-sealed tank is prone to failure

[0005] CN204485595U discloses a kind of water-seal tank bottom blowdown valve and the method that the overflow outlet is connected with the water pump for recycling, which solves the problem of waste of water resources

However, the operation of the pump intensifies the frequency of pressure fluctuations in the storage tank, increases power loss, and increases costs

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