Cathode for electric demisting device with conductive fiberglass reinforced plastic

Abstract

The cathode system for conductive FRP electric demister is used in the acid mist removal device in the mercury-containing smelting flue gas purification process of acid engineering. It belongs to the field of electric demister and consists of cathode load beam, cathode wire, weight and lower cathode frame. , the upper end of the cathode line is hung on the cathode load beam, which is characterized in that the weight vertically connected to the lower end of the cathode line is composed of a closed plastic outer cylinder and a plumb weight inside it, and the lower cathode frame is a main beam made of plastic or glass steel It is composed of a support beam, and the support beam is correspondingly provided with an opening adjustment plate, and the outer cylinder of the weight passes through the hole of the adjustment plate. In this system, the plumb weight in the weight is isolated from the cathode line without direct contact, which effectively prevents the cathode line The electrochemical corrosion between the lead bob and the cathode wire prolongs the service life of the cathode wire. The lower cathode frame has a simple structure and high strength. The opening adjustment plate on it makes it easy to adjust the position and distance of the cathode wire. The shape of the anode tube is adjusted separately, the size accuracy is easy to control, the stability is good, the weight is light, and the installation is convenient. The electric field in the conductive FRP electric demister is stable, the operation is safe, the service life is long, the demisting efficiency is high, and the acid mist outlet is ≤3mg / NM3.

Description

technical field [0001] The invention relates to a cathode system in an acid mist removal device used in the mercury-containing smelting flue gas purification process of an acid production project, and belongs to the field of electric mist eliminators. technical background [0002] The conductive FRP electrostatic precipitator is usually composed of an upper shell, a dust pole chamber, a middle shell, a lower shell, a cathode system, a spray device, an air inlet and an outlet pipe, etc. Among them, the cathode system is composed of a cathode load beam, a cathode wire, a heavy The hammer and the lower cathode frame are composed. The upper end of the cathode wire is hung on the cathode load beam. The lower cathode frame is a plastic scissors board placed on a plane, and there are corresponding small holes on it. The disadvantages are: 1) The function of the plastic scissors board is to keep the distance between the cathode wire and the anode tube, to separate the cathode wires ...

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Problems solved by technology

[0002] The conductive FRP electrostatic precipitator is usually composed of an upper shell, a dust pole chamber, a middle shell, a lower shell, a cathode system, a spray device, an air inlet and an outlet pipe, etc. Among them, the cathode system is composed of a cathode load beam, a cathode wire, a heavy The hammer and the lower cathode frame are composed. The upper end of the cathode wire is hung on the cathode load beam. The lower cathode frame is a plastic scissors board placed on a plane, and there are corresponding small holes on it. The disadvantages are: 1) The function of the plastic scissors board is to keep the distance between the cathode wire and the anode tube, to separate the cathode wires and the weight so as not to cause a short circuit. If one fulcrum shakes, the whole will shake, and the electric field operation of the equipment will be unstable. In addition, because the cathode wires are positioned with small holes, the distance between the cathode wires is not easy to adjust, which increases the size error and affects the adjustment of the equipment; 2) hanging cathodes The heavy hammer used for the wire can straighten the cathode wire and keep the distance between the cathode wire. It is a conical plumb weight with a small hole for threading in the middle of the plumb weight. When the material of the cathode wire is different from that of the weight, it can cause electrochemical corrosion , the cathode line is easy to break, and the upper mouth of the conical plumb bob is flat, which is easy to deposit mercury, which will cause harm to the human body when personnel enter the equipment for maintenance

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