Liquid medium discharge control method and system with medium return function

Abstract

The invention relates to a liquid medium drainage control method and a liquid medium drainage control system with medium return functions. By the aid of the liquid medium drainage control method and the liquid medium drainage control system, the problem of polymerization of media in existing water drain pipelines can be solved. The liquid medium drainage control system comprises an automatic water draining tank and an automatic water storing tank. Upper and lower medium detection probes are arranged on the side surfaces of the automatic water draining tank and the automatic water storing tank, a water drain pipeline of the water draining tank is provided with a medium detection probe and is connected to a water drain opening of a medium storing tank; a water draining pipe of the water draining tank is communicated and connected with a control valve at the bottom of the water storing tank via a three-way pipe and is communicated with an external drain pipe with a control valve; the top of the water storing tank is communicated with a pressure relief pipe with a control valve and is communicated with a storage tank via a gas distribution pipe with a control valve, and pressure gas can be provided by the storage tank. The liquid medium drainage control method and the liquid medium drainage control system have the advantages that all the medium detection probes and all the control valves are electrically connected with an intelligent controller, media stored in the medium storing tank can reach the water drain pipeline in later water draining periods under the control of the intelligent controller and then can return the medium storing tank by the aid of water in the water storing tank by means of pressure, the water in the water storing tank comes from the water drain pipeline, and accordingly the media can be prevented from being polymerized in the pipeline; the media are easy to control when drained, and the media in the pipeline can be prevented from being retained and polymerized.

Description

technical field [0001] The invention relates to a storage tank medium water separation method, in particular to a liquid medium discharge control method and system with a medium return function. Background technique [0002] Medium pressure storage tanks in the petrochemical industry, due to the process, the medium contains liquid media with different specific gravity. According to the requirements of process and product quality, the water in the pressure storage tank needs to be discharged out of the storage tank. The current discharge methods are all carried out under the pressure of the storage tank, which is usually very high, such as the pressure of the liquefied gas storage tank is as high as 10 kg. It is very difficult to discharge the lower layer medium under such a high pressure, regardless of any existing equipment. control. [0003] Especially for carbon 5 medium storage tanks, when the ambient temperature exceeds 40°C, carbon 5 starts to self-polymerize, and the...

AI Technical Summary

Problems solved by technology

Since the spray facility of the spherical tank starts to spray the temperature of the spherical tank when the ambient temperature rises, it is difficult to spray cold water to the drain pipe at the lower part of the spherical tank. The drain pipe is small in volume and heats up quickly, and the carbon 5 trapped in the drain pipe is When it reaches a certain temperature, the polymerization reaction begins to occur. These polymers are difficult to clean due to their high viscosity and have no use value. At present, they are discharged from storage tanks as waste in enterprises, causing new pollution, and these polymers produced in the drain pipe will also cause pollution. Affect normal drainage operations

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