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Testing method and testing device for properties of SCR (semiconductor control rectifier) smoke denitrating catalyst
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The technology of a denitrification catalyst and testing method is applied in the field of flue gas denitrification catalyst performance testing methods and testing devices, which can solve the problems of long measurement time, large gas consumption, and high test cost, and achieve short test time, small flue gas volume, and high test efficiency. The effect of simple process
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Problems solved by technology
However, this performance test device has disadvantages such as large gas consumption (150-300Nm3 / h), long measurement time (more than 72 hours), and high test cost (30,000-50,000 yuan / time).
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Embodiment 1
[0039] Select a catalyst monomer with a pitch of 10.0mm, and perform a performance test on a medium-sized (bench) performance test device, and the test conditions are as follows:
[0040]Flue gas volume: 157.41 m 3 / h (S.T.P., wet)
[0045] SO 2 Concentration: 403.1 vpm (S.T.P., dry)
[0046] Linear velocity (LV): 2.56 m / s (S.T.P., wet)
[0047] Face velocity (AV): 20.6 m / h (S.T.P., wet)
[0048] After the medium-scale test, a sample with a hole number of 2×2 and a length of 320.7 mm was prepared on the catalyst monomer, and tested on the micro-performance testing device of the present invention. The test conditions are as follows:
[0049] Flue gas volume: 903.58 l / h (S.T.P., wet)
[0058] It is 3 * 3 that it is 360mm that the number of holes prepared on the same catalyst monomer is tested with embodiment 1, and the length is 360mm, and the flue gas volume is 2273.7l / h (S.T.P., wet), and surface velocity (AV) is 20.6m / h ( S.T.P., wet), linear velocity (LV) is 1.2m / s (S.T.P., wet), other conditions are the same as embodiment 1, test on the miniature performance testing device of the present invention.
Embodiment 3
[0060] The number of holes prepared on the same catalyst monomer as in the micro performance test of Example 1 is 2×2 and the length is 400mm, the flue gas volume is 1127.01l / h (S.T.P., wet), and the surface velocity (AV) is 20.6m / h (S.T.P. , wet), the linear velocity (LV) is 1.6m / s (S.T.P., wet),
[0061] Other conditions are the same as in Example 1, and the test is carried out on the miniature performance testing device of the present invention.
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Abstract
The invention discloses a testing method and testing device for the properties of an SCR (semiconductor control rectifier) smoke denitrating catalyst, and the testing method provided by the invention comprises the following steps: mixing and heating simulated smoke; and obtaining the temperature, the pressure and the relevant data of NO, SO2, SO3 and NH3 under the condition that the flow of the smoke is 1-2Nm<3> / h, the linear velocity LV of the smoke through the catalyst is greater than 0.85m / s, and the area velocity AV of the smoke through the catalyst is the same to the area velocity AV under the actual working conditions. The invention also provides a device for realizing the testing method. The invention provides the device and method for testing the properties, which has the advantages of simple testing working procedures, low cost and small sample amount. The mini-sized testing device provided by the invention is adopted to substitute the existing medium-sized testing device fortesting the properties of the catalyst, and the testing method has the advantages of small required smoke amount, short testing time and low testing cost, can simultaneously test two catalyst samplesonce and has obvious technical and economic benefits.
Description
technical field [0001] The invention belongs to the technical field of a catalyst performance test method and a test device, and in particular relates to a flue gas denitration catalyst performance test method and a test device. Background technique [0002] Selective catalytic reduction (SCR) flue gas denitrification catalyst is widely used in the removal of nitrogen oxides (NOx) in waste gas (ie flue gas) of coal-fired boilers in power plants, cementplant kilns, waste incinerators, etc. The denitrification catalyst includes honeycomb Type, flat type and corrugated type three forms. The catalyst performance testing device and testing method are key technologies for testing and evaluating the performance of the selective catalytic reductionflue gasdenitrification catalyst. [0003] SCR denitration technology and SCR denitration catalyst originated in Japan in the 1970s and began to be put into commercial use. After the 1980s, they were successively transferred to Europe ...
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