Device for producing mercury and bivalent mercury standard gas based on penetration principle

Abstract

The invention discloses a device for producing mercury and bivalent mercury standard gas based on the penetration principle. The device comprises an element mercury standard gas generating system and a bivalent mercury standard gas generating system. The element mercury standard gas generating system comprises a first gas carrier device and an element mercury generator for generating mercury gas, wherein the first gas carrier device and the element mercury generator are sequentially connected through a pipeline. The bivalent mercury standard gas generating system comprises a plasma gas source device, a gas premixing chamber and a bivalent mercury generator which are sequentially connected through a pipeline, wherein the bivalent mercury generator produces bivalent mercury gas. The gas premixing chamber is further connected with an outlet of the element mercury generator and used for mixing a plasma gas source and mercury gas produced by the element mercury generator, the bivalent mercury generator is provided with a high-frequency high-voltage alternating current power source generation device and used for generating plasmas to oxidize mercury gas into bivalent mercury gas, element mercury standard gas and bivalent mercury standard gas are obtained at the same time, one mercury source is adopted, the problem that traceability delivery needs to be carried out two times when different mercury sources are adopted is avoided, and operation steps are simplified.

Description

technical field [0001] The invention belongs to the field of gaseous mercury monitoring, in particular to a device for generating standard gas of mercury and divalent mercury based on the principle of osmosis. Background technique [0002] Mercury (Hg) is a global heavy metal pollutant. It stays in the atmosphere for a long time and has a cumulative effect in organisms. Therefore, mercury pollution causes great harm to the environment and human health. Man-made emissions are the main source of mercury pollution, especially in China. As my country pays more and more attention to environmental protection, the emission standards of flue gas mercury from stationary pollution sources will become increasingly strict. Therefore, it is of great significance to develop online monitoring devices and methods for flue gas mercury from stationary pollution sources. [0003] Mercury in exhaust gas (such as flue gas, etc.) mainly exists in the form of compound state and elemental form, an...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem that divalent mercury standard gas and elemental mercury standard gas cannot be produced at the same time in the prior art, and the mercury source is inconsistent and needs to be traced twice, and then provides a method based on the principle of osmosis to generate mercury and divalent mercury. Mercury standard gas device

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