Corrosion-resistant multifunctional low-gas-containing bulk sample content desorber

Abstract

The invention relates to a corrosion-resistant multifunctional low-gas containing bulk sample content desorber. The desorber is provided with a bottom plate with a supporting function, wherein three gas collection measuring cylinders are vertically arranged in parallel on the upper part of the bottom plate; a vent valve is arranged on the upper part of each gas collection measuring cylinder; an air inlet in the upper end of the gas collection measuring cylinder I is communicated with an outlet C of a three-way valve I; an inlet hole in the upper end of the gas collection measuring cylinder II is communicated with an outlet C of a three-way valve II; a spillway hole in the bottom end of the gas collection measuring cylinder III is communicated with an outlet C of a three-way valve III; a spillway hole in the bottom end of the gas collection measuring cylinder II is communicated with an outlet C of the three-way valve IV; two vertical brackets are arranged in parallel on the upper part of the bottom plate; a transverse connecting rod is arranged between the two vertical brackets; a conical flask support is perpendicularly and fixedly arranged on the upper parts of the vertical brackets. According to the desorber, low-concentration corrosive gas in a coal bed can be collected, and the corrosion of the gas to a gas tank can also be overcome, so that the desorber is suitable for being popularized and used in the fields of scientific researches and industrial tests.

Description

technical field [0001] The invention relates to a desorption instrument, in particular to a corrosion-resistant multifunctional desorption instrument with low gas content and large sample volume, which is suitable for desorption tests of corrosive gases. Background technique [0002] Coalbed methane and shale gas are mainly composed of methane and its homologues, and usually contain a certain amount of non-hydrocarbon gases, including corrosive and toxic gases H 2 S, SO 2 , CO 2 and CO etc. [0003] Corrosive and toxic gases are an important factor affecting the quality of coalbed methane and its safe production. Although to H 2 S, SO 2 , CO 2 There have been many studies on the corrosiveness and toxicity of gases such as CO and CO, and it is not uncommon to study its geochemical significance as a component in natural gas. However, for coalbed methane (gas) and shale gas, There are few topical or systematic studies on toxic components. With the utilization of coalbed...

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Problems solved by technology

[0008] In order to solve the problem of low gas content in low-rank coal and shale, and the inconvenient testing of corrosive gases contained in coalbed methane and shale gas, the present invention provides a corrosion-resistant multifunctional desorption instrument with low gas content and large sample volume. While carrying out the desorption test of coalbed methane and shale gas, the instrument can not only collect the low concentration of corrosive H in the coal seam 2 S and SO 2 gas, and can overcome the corrosiveness of these gases to the gas tank, the experimental accuracy is high, and it is suitable for popularization and use in the field of scientific research and industrial testing

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