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Ash-free smoke sampling device

A sampling device and flue gas technology, applied in the direction of sampling devices, etc., can solve the problems of inaccurate measurement of the concentration and form of flue gas components, non-continuous sampling, etc., to prevent oxidation or form changes, reduce costs, and simplify the device system Effect

Inactive Publication Date: 2012-02-15
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

Therefore, traditional sampling systems can only be used in low-ash flue gas, and can only be used for discontinuous sampling, and cannot accurately measure the concentration and form of real flue gas components.

Method used

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] like figure 1 As shown, the flue gas ashless sampling device provided by the present invention includes a U-shaped sampling gun 8, a flange 2, an electric heating element 3 and a temperature controller 10, a porous ceramic tube liner 7, a jet mechanism 9, and the like.

[0017] The flue gas ashless sampling device is fixed on the flue wall 1 through the flange 2 . The middle section of the U-shaped sampling gun 8 is provided with a porous ceramic bushing 7, and three sampling holes 4 are opened on the porous ceramic bushing 7, and a jet mechanism 9 is housed in the end section of the U-shaped sampling gun 8, and a built-in electric circuit is installed outside the U-shaped sampling gun 8. Heating element 3 and thermostat 10.

[0018] The jet mechanism 9 includes an air inlet 11, a nozzle 12, a mixing chamber 13, a transition section 14, a ...

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Abstract

The invention relates to an ash-free smoke sampling device. The device which comprises a U-shaped sampling gun, an electric heating element, a temperature controller, a porous ceramic tube lining and a jet mechanism is characterized in that: the intermediate section of the U-shaped sampling gun is provided with the porous ceramic lining, the porous ceramic lining is provided with three sampling holes, the jet mechanism is arranged in the tail section of the U-shaped sampling gun, and the outside of the U-shaped sampling gun is provided with the built-in electric heating element and the temperature controller. The device, which is suitable for the measurement of the low ash or ash-free smoke and allows the measurement of a high ash smoke to be realized, has a very wide application temperature range, so the instantaneous sampling of a smoke from coal firing can be realized, and components of the smoke and the form thereof in various atmospheres can be accurately measured. The device of the invention, which has a simple system, provides an effective method for the research of the purification treatment of the smokes in coal-fired boilers.

Description

technical field [0001] The invention relates to a flue gas ashless sampling device for sampling coal-fired flue gas and measuring components and contents in the flue gas. Background technique [0002] China is a big coal producing country and a big coal burning country. In China's energy structure, coal accounts for nearly 70%, and this coal-based energy structure will not change in the short term. [0003] The main components of coal are carbon (45%-90%), hydrogen (1.5%-6%), oxygen (0.5%-30%), nitrogen (0.3%-3.5%), sulfur (0.5%-2%), Add moisture (2%-50%) and ash (10%-50%). The flue gas produced by coal combustion contains a large amount of SO x , NO x , trace heavy metals, CmHn, CO, CO 2 And fly ash, the acid rain and greenhouse effect formed by these gaseous and solid pollutants have caused serious harm to the atmospheric environment, ecological environment and human body. Therefore, according to the characteristics of the above-mentioned coal resources and the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24
Inventor 吴江潘卫国任建兴何平郭瑞堂冯巧波张艳艳陈洁鹤徐宇豪
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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