Sampling and collecting system of SO3 in wet method desulphurization system tail flue gas

A collection system, wet desulfurization technology, applied in sampling devices, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, etc., can solve the problems of large measurement errors, undiscovered, and instrument corrosion And other issues

Inactive Publication Date: 2013-12-25
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no flue gas analyzer has been found to measure SO 3 content of this function, which is mainly due to SO 3 It will condense or adhere to the transmission pipeline in the form of sulfuric acid vapor or sulfuric acid mist during transmission to the measurement terminal of the instrument, result

Method used

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  • Sampling and collecting system of SO3 in wet method desulphurization system tail flue gas
  • Sampling and collecting system of SO3 in wet method desulphurization system tail flue gas
  • Sampling and collecting system of SO3 in wet method desulphurization system tail flue gas

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Embodiment

[0019] figure 1 It is a structural block diagram of the sampling collection system of the present invention; figure 2 It is a schematic structural diagram of the sample collection system in the embodiment of the present invention, which includes: probe 1, heating device 2, dust removal device 8, silicone tube 9, condensation device 10, glass tube 13, inspection device 14, dryer 15, rubber Pipe 16, regulating valve 17, vacuum pump 18, wet gas meter 19; wherein, heating device 2 includes inner pipe 3, constant temperature electric heating layer 4, insulation layer 5, outer pipe 6, power connector 7 and temperature controller 20; condensing device 10 It includes a constant temperature water tank 11 and a spiral condenser tube 12 .

[0020] The connection relationship of the above components is as follows:

[0021] The probe 1 is directly connected to the inlet of the heating device 2 (that is, the inlet of the inner pipe 3). The layer 4 is directly connected with the power co...

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Abstract

The invention discloses a sampling and collecting system of SO3 in wet method desulphurization system tail flue gas. The system includes a probe for acquiring wet flue gas, a heating device connected with the probe and used for heating the wet flue gas, a dedusting device connected with the heating device and used for removing solid particles comprising dusts and the like in the flue gas, a condensing device connected with the dedusting device and used for condensing sulfuric acid steam in the flue gas, an examining device connected with the condensing device and used for examining whether the sulfuric acid steam collected in the condensing device reaches saturation and collecting the sulfuric acid steam in the flue gas when the saturation is realized, a drier connected with the examining device and used for removing water in the flue gas, an adjusting valve connected with the drier and used for adjusting the flow velocity of the flue gas to ensure that sampling is constant speed sampling, a vacuum pump connected with an outlet of the adjusting valve and used for pumping the flue gas, and a wet gas meter connected with an outlet of the vacuum pump and used for determining the flow, temperature and pressure of the flue gas and discharging the flue gas.

Description

technical field [0001] The invention relates to the field of pollutant measurement and treatment in coal-fired power plants, in particular to a method for SO in tail flue gas of wet desulfurization system 3 sample collection system. Background technique [0002] As of the end of 2010, the installed capacity of desulfurization devices in my country's coal-fired power plants exceeded 600 million KW, of which wet desulfurization devices accounted for about 90%. The SO 3 The removal efficiency is generally between 30% and 50%, and the unremoved SO 3 After the wet system, almost all with H 2 SO 4 Existing in the form of sulfuric acid aerosol, it will seriously pollute the environment and human health through chimney emission in the state of sulfuric acid aerosol. Therefore, effective measures must be taken to control SO 3 emissions. [0003] Thanks to SO 3 It is easy to combine with water vapor in the flue gas to form sulfuric acid vapor, which condenses on the heating surf...

Claims

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Application Information

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IPC IPC(8): G01N1/24G01N21/78
Inventor 高新勇金晶曾武勇董振高文静孟磊赵庆庆刘磊张盈文刘娓梁小龙赵举李成磊
Owner UNIV OF SHANGHAI FOR SCI & TECH
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