Filter material corrosion simulation experiment device and experiment method

Abstract

The invention discloses a filter material corrosion simulation experiment device and an experiment method. The experiment device comprises a gas flow control device, a thermostatic chamber, an ageing test chamber, a fan, a flue gas analyzer and an exhaust absorbing device. The gas flow control device comprises a gas bottle, a valve and a flow gauge. The temperature of the thermostatic chamber is adjustable. The ageing test chamber is inside the thermostatic chamber. Stainless steel bars are arranged in the thermostatic chamber and the ageing test chamber. A filter material is suspended vertically and in parallel at the stainless steel bars in the thermostatic chamber and the ageing test chamber. The top of the ageing test chamber is provided with a thermometer and a pressure gauge. The fan is connected to a position between the gas inlet pipe and the gas outlet pipe of the ageing test chamber. The gas outlet pipe is provided with the online flue gas analyzer. The exhaust absorbing device is at the tail end of the pipe. The experiment method can compare corrosion results of the filter material in an acid gas and in air at the same time, and can fully stimulate corrosion situations to the filter material at different temperatures with different concentrations by different gases. The method is simple in operation and reliable in result.

Description

technical field [0001] The invention relates to a filter material corrosion experiment technology in high-temperature and acidic circulating gas, in particular to a filter material corrosion test device and method. [0002] Background technique [0003] The smog and sandstorms that have appeared in recent years have had a major impact on people's lives and health. The dust emitted by coal-fired power plants is one of the important causes of air deterioration, especially the dust with a particle size of 0.5-5 μm is the most harmful to humans. . Bag dust removal and electric bag dust removal technology are currently widely used as an efficient dust removal method, with a dust removal efficiency as high as 99.99%, which is a very effective way to solve the problem of air pollution. [0004] At present, my country's coal-fired power plants mostly use PTFE (polytetrafluoroethylene) and PPS (polyphenylene sulfide) fibers as filter materials for bag filters. Both PTFE fiber and P...

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Problems solved by technology

[0006] Although the gas corrosion test method and operation of Zhuang Yuling and others can effectively simulate the corrosion of the filter material under actual working conditions, when the acid gas When the rate is passed into the aging test chamber, there must be a gas concentration gradient in the radial and axial directions around the filter material, which makes the gas concentration around the filter material uneven, so that the corrosion of the filter material does not match the actual situation.

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