Enrichment device for gaseous mercury in soil and application method thereof

Abstract

The invention provides an enrichment device for gaseous mercury in soil. The enrichment device comprises an auger, which isolates air from gas in soil and seals earth gas; a drying and buffering purifier, which filters out dust and dries and cleans buffer gas; a mercury enricher, which adsorbs gaseous mercury in the soil; and an adjustable gas pump, which extracts the gas in the soil, wherein theauger is provided with a gas pipe which allows the gas in the soil to pass through; the outlet of the gas pipe communicates with the drying and buffering purifier; and the gas in the soil sequentiallypasses through the auger, the drying and buffering purifier, the mercury enricher and the adjustable gas pump and is then discharged. According to the invention, filtration purification and buffer drying design are adopted for a gas extraction method for the first time, and an indirect contact manner is employed for a mercury trapping tube to realize adsorption in the enricher. The enrichment device of the invention has integrated dust filtering and gas drying functions and adopts a gas extraction method using a series of anti-pollution units like the enricher, so the mercury trapping tube iseffectively prevented from contamination.

Description

technical field [0001] The invention relates to an enrichment device for gaseous mercury in field soil and a method for using it, which is applied to the field of petroleum geology and oil and gas exploration. Background technique [0002] Due to the strong penetrating power of mercury, it is determined that it can migrate vertically upwards from the underlying gas reservoir to the crustal surface, where it is abundant in the surface soil. According to this characteristic, mercury is an important tracer indicator in oil and gas geochemical exploration as an associated organism of oil and gas reservoirs. At the same time, mercury is also an indispensable indicator in judging geological faults and geothermal energy. How to correctly judge the geological significance of the underlying mercury? Correct detection methods and accurate analysis data are the main means and basis for researchers to identify research projects. [0003] At present, the collection method of gaseous mer...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that moisture damages the mercury capture tube and the gas extraction equipment in the traditional soil gas collection process, thus affecting the gas extraction effect, a kind of enrichment equipment suitable for field soil gaseous mercury is developed to improve the credibility of geological interpretation Spend

Images