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Mininature SCR (selective catalytic reduction) denitration catalyst activity detection device based on sample boat flange external expansion

A denitration catalyst and activity detection technology, which is applied in the direction of chemical analysis by catalysis, can solve the problems of cumbersome sample loading and unloading process, complex structure of the reaction unit of the SCR denitration catalyst activity detection device, etc., to ensure airtightness and convenience. The effect of fixing and preventing cracking

Pending Publication Date: 2017-11-17
GUODIAN ENVIRONMENTAL PROTECTION RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The various experimental conditions mentioned above lead to the complex structure of the reaction unit of the SCR denitration catalyst activity detection device, which makes the SCR denitration catalyst activity detection device very cumbersome in the process of sample loading and unloading

Method used

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  • Mininature SCR (selective catalytic reduction) denitration catalyst activity detection device based on sample boat flange external expansion
  • Mininature SCR (selective catalytic reduction) denitration catalyst activity detection device based on sample boat flange external expansion

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 , figure 2 As shown, the sample boat flange expansion type miniature SCR denitration catalyst activity detection device of the present invention includes a gas distribution unit, a water injection unit, a preheating unit, a reaction unit, a flue gas detection unit and an exhaust gas treatment unit.

[0032] Gas distribution unit can include HN 3 Gas distribution unit, SO 2 Air distribution unit, NO air distribution unit, compressed air air distribution unit and N 2 Gas distribution unit, each gas distribution unit is mainly equipped with pressure reducing valve, gas filter, mass flow meter (with flow adjustment function) and mass flow meter calibration port.

[0033]The water injection unit mainly includes an advection pump 10 (with flow adjustment and measurement function), a filter and a water storage bottle 11; the preheating unit adopts a coil type heating furnace; the tail gas treatment unit mainly includes a coil condenser 25, an absorption bo...

Embodiment 2

[0037] In this example, the flange of the air outlet pipe is not provided with a mechanical lifting mechanism, and the air outlet pipe connected by the air outlet pipe flange is not provided with a bellows, and the rest are the same as in the first embodiment.

Embodiment 3

[0039] The working process of the first sample boat flange expansion type micro-SCR denitration catalyst activity detection device of the embodiment of the present invention:

[0040] In the present invention, the pressure reducing valves 1-1, 2-1, 3-1, 4-1, 5-1 in the gas distribution unit will use 10%HN from the gas storage cylinder 3 , SO 2 , 10%NO, and compressed air from air compressors and nitrogen generators, N 2 The pressure is reduced to 0.3-0.6MPa, filtered by filters 1-2, 2-2, 3-2, 4-2, 5-2, and then supplied to the front end of the mass flow meter. The front end of the mass flowmeter is equipped with gas supply calibration ports 1-4, 2-4, 3-4, 4-4, 5-4, and the rear end of the mass flow meter is equipped with detection calibration ports 1-6, 2-6, 3-6, 4-6, 5-6, easy to calibrate the mass flow meter. Mass flowmeter front-end shut-off valve 1-3, 2-3, 3-3, 4-3, 5-3 and rear-end shut-off valve 1-7, 2-7, 3-7, 4-7, 5- 7 When calibrating as a mass flowmeter, it is con...

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Abstract

The invention provides a mininature SCR (selective catalytic reduction) denitration catalyst activity detection device based on sample boat flange external expansion. The device comprises a gas distribution unit, a water injection unit, a preheating unit, a reaction unit, a flue gas detection unit and a tail gas treatment unit, wherein the reaction unit comprises a heating furnace and a sample boat arranged in the furnace, a gas inlet pipe flange is arranged at the upper part of the heating furnace, a gas outlet pipe flange is arranged at the lower part of the heating furnace, and the gas inlet pipe flange and the gas outlet pipe flange are connected with a pipe of a gas supply unit and a pipe of the tail gas treatment unit respectively; the sample boat comprises a sample pipe in the middle as well as an upper flange and a lower flange which are at two ends; when the sample boat is located in the heating furnace, the upper flange and the lower flange at the two ends of the sample boat are assembled with the gas inlet pipe flange and the gas outlet pipe flange respectively, so that the sample boat is fixed in the heating furnace.

Description

Technical field: [0001] The invention belongs to the technical field of catalyst detection, and relates to a device for detecting the activity of an SCR denitrification catalyst, in particular to a device for detecting the activity of a miniature SCR denitrification catalyst with a sample boat flange. Background technique: [0002] The micro-SCR denitrification catalyst activity detection device is an experimental detection device used to evaluate the process performance index of the SCR denitrification catalyst. It simulates the operating conditions of the SCR denitration catalyst in the power plant and measures the changes in the components of the simulated flue gas before and after passing through the SCR denitration catalyst. , to evaluate the denitrification efficiency, activity, ammonia escape and other indicators of the test samples. [0003] In recent years, my country's control indicators for the emission of nitrogen oxides from thermal power plants have become in...

Claims

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Application Information

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IPC IPC(8): G01N31/10
CPCG01N31/10
Inventor 肖正雨姚杰庄柯沈磊黄奎候深林正根白艳王娴娜
Owner GUODIAN ENVIRONMENTAL PROTECTION RES INST CO LTD
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