Gas membrane separation device capable of eliminating static electricity and method

Abstract

The invention relates to the field of membrane separation devices, and discloses a gas membrane separation device capable of eliminating static electricity and a method. The gas membrane separation device comprises a membrane assembly, wherein the membrane assembly is at least partially prepared from conductive materials; the gas membrane separation device further comprises a conductive mesh which covers a membrane in the membrane assembly and is in contact with the conductive materials. According to the gas membrane separation device, the static electricity accumulated on the membrane surface or in the membrane gap is led out of the membrane assembly through the conductive mesh during membrane separation, in order to achieve the purpose of eliminating the internal static electricity. The gas membrane separation device can effectively eliminate the static electricity in the gas membrane separation process and is suitable for the field of separation of flammable and explosive gases.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a gas membrane separation device and method capable of eliminating static electricity. Background technique [0002] In the process of separation and recovery of flammable and explosive gases such as organic vapor, because the gas is not completely pure, it often contains solid or liquid particles such as dust, iron powder, liquid droplets, and steam. Static electricity is generated. In addition, high-speed flowing gas will also generate static electricity when it flows through the diversion net. Since the conventional diversion net is an insulator, the static electricity will continue to accumulate. If it cannot be discharged in time, it will absorb dust, block the channel, and cause membrane pollution. If it reaches a certain voltage, it will discharge and generate electric sparks. Gas can explode. Therefore, how to discharge static electricity in time is an urgen...

AI Technical Summary

Problems solved by technology

For example, the addition of positioning pads or metal mesh made of conductive materials reduces the effective area of ​​the membrane module and increases the operating procedures, which affects production efficiency; the metal wire (net) is easy to scratch the membrane surface and affects the separation efficiency; the metal wire (net) ) are prone to poor contact, and there are still dead spots where static electricity cannot be released in the positioning pad, which will cause the conduction of static electricity to be blocked; the metal wire (network) has poor corrosion resistance, etc.

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