Gaseous mercury enrichment and intelligent sampling integrated device

Abstract

The invention relates to the field of environment monitoring devices, in particular to a gaseous mercury enrichment and intelligent sampling integrated device. The device comprises a box body, wherein a mercury vapor generation cavity is formed in the box body; an acid gas absorption cavity is formed in one side of the mercury vapor generation cavity; the mercury vapor generation cavity and the acid gas absorption cavity are communicated through a first connecting pipe; a first cavity is further formed in the box body; a drying mechanism is arranged in the first cavity; an enrichment mechanism used for enriching gaseous mercury is arranged at the bottom of the drying mechanism; the bottom of the enrichment mechanism is connected with an air outlet pipe. During working, air with acid gas absorbed by the acid gas absorption cavity enters an air guide cylinder and a second connecting pipe and enters U-shaped drying pipes, anhydrous calcium chloride in the U-shaped drying pipes absorbs water vapor in the air, air enters the air collecting pipe through a third connecting pipe and then enters the enrichment mechanism, the multiple U-shaped drying pipes are arranged in parallel, the effect of absorbing water vapor in the air during long-time use can be achieved, and the situation that anhydrous calcium chloride in a certain U-shaped drying pipe absorbs water and then becomes a thick liquid state to block a pipeline is prevented.

Description

technical field [0001] The invention relates to the field of environmental monitoring devices, in particular to a gaseous mercury enrichment and intelligent sampling integrated device. Background technique [0002] Mercury and inorganic mercury in the air have a great impact on human health, both of which are listed as Class 3 carcinogens. Studies have shown that mercury enters the atmosphere mainly through emissions from industrial production processes (such as tail gas produced after coal combustion) In the detection of mercury content in the air, a gaseous mercury gold film enrichment sampling device is often used, which uses the amalgamation property of mercury on the gold surface to capture gaseous mercury through the gold film particulate mercury enrichment tube. [0003] In the vicinity of large-scale thermal power plants that use coal as a heat source, the mercury content in the air is often high. In order to obtain the daily average value of the gaseous mercury cont...

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Problems solved by technology

[0003] In the vicinity of large-scale thermal power plants that use coal as a heat source, the mercury content in the air is often high. In order to obtain the daily average value of the gaseous mercury content in the air near the power plant, 24-hour sampling is required. The air to be sampled is produced by mercury vapor. After the bottle, it enters the acid gas absorption bottle, and then passes through the drying tube to remove the water vapor in it, and finally enters the enrichment tube equipped with gold film particles, wherein the anhydrous calcium chloride in the drying tube will become damp after absorbing water for a long time Soft, then from wet lumps to thick liquid, gradually clogging the drying tube, making it impossible for air to pass through, unable to meet the requirements of continuous sampling for a long time

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