Gas distributor, gas-liquid contact device and gas automatic sampling metering system

Abstract

The invention relates to a gas distributor, a gas-liquid contact device and a gas automatic sampling metering system. The gas distributor comprises a first component and a second component, wherein the first component is made of polytetrafluoroethylene; the second component is made of porous polytetrafluoroethylene, and is of a hollow structure with an opening; the opening of the second componentis sealed and blocked by one end of the first component; a sealed cavity is formed inside the second component; the first component is provided with a first gas passage; and the first gas passage communicates with the sealed cavity. The gas distributor can ensure the absorption effect of gas in absorption liquid, and can reduce the absorption time. The gas automatic sampling metering system comprising the gas distributor has the advantages of long-time sampling, timing sampling, quantitative sampling, high sample absorption efficiency, high analysis precision and the like. The sampling analysis efficiency and the technical level are greatly improved.

Description

technical field [0001] The invention relates to the technical field of automatic gas sampling and metering, in particular to a gas distributor, a gas-liquid contact device and an automatic gas sampling and metering system. Background technique [0002] At present, the analysis of HCl, H contained in refinery dry gas 2 When the content of S and other substances is high, the gas can only be collected with a manual gas sampler at the on-site sampling port of the device, and then returned to the laboratory for analysis after sampling or absorbed and sampled with an absorption bottle on site. The gas sampling speed of the manual gas sampler is relatively slow, and the gas sampler balloon is mostly squeezed by hand, and then the gas is sent into the gas sample bag through the rubber hose and the one-way valve. This method of collecting gas samples is not only cumbersome to operate, but also time-consuming and labor-intensive. Even if aluminum foil sampling bags are used, there a...

AI Technical Summary

Problems solved by technology

The existing gas distributor made of sintered metal powder or ceramics has the characteristics of fine bubbles, heat resistance, and corrosion resistance. It is easy to block and difficult to clean, which can easily cause micropore failure and damage to the gas distributor. It cannot be used in places with large gas-hydraulic difference and low gas cleanliness

In addition, the opening direction of the pores on the microscopic surface of this type of distributor in contact with the liquid phase is chaotic, which can easily cause bubbles to merge and reduce the gas-liquid contact area.

[0004] The main problems existing in the prior art are: firstly, the pore size is large, the opening ratio is low, and the generated bubbles are large, which cannot meet the requirements of gas-liquid reaction, which affects the production capacity and reaction efficiency; secondly, the material selection cannot meet the acid resistance base requirement

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