CN113533023A - Flow-adjustable denitration catalyst abrasion strength testing device and testing method - Google Patents
Flow-adjustable denitration catalyst abrasion strength testing device and testing method Download PDFInfo
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- CN113533023A CN113533023A CN202110797846.2A CN202110797846A CN113533023A CN 113533023 A CN113533023 A CN 113533023A CN 202110797846 A CN202110797846 A CN 202110797846A CN 113533023 A CN113533023 A CN 113533023A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention discloses a flow-adjustable denitration catalyst abrasion strength testing device and a testing method, which are used for detecting the abrasion strength of a denitration catalyst testing platform, wherein the testing device comprises a comparison bin, a testing bin, a feeder, a dust remover, an induced draft fan, a flowmeter, a first branch pipe, a first regulating valve, a first flowmeter, a second branch pipe, a second regulating valve and a second flowmeter; contrast storehouse, test bin, dust remover and draught fan connect gradually, and first branch pipe is parallelly connected with the contrast storehouse, and the second branch pipe is parallelly connected with the test bin, and first governing valve and first flowmeter are installed on first branch pipe, and second governing valve and second flowmeter are installed on the second branch pipe, connect the flowmeter on the inlet pipeline in contrast storehouse, connect the feeder on the pipeline between contrast storehouse and the test bin. The invention can simulate the abrasion working condition of the actual catalyst in operation, and the flow of the comparison sample and the flow of the test sample are controlled to be consistent and are the preset values specified in the test standard, so that the reliability of the test result is high.
Description
Technical Field
The invention relates to a flow-adjustable denitration catalyst abrasion strength testing device and a testing method, and belongs to the field of industrial waste gas treatment and monitoring.
Background
Selective Catalytic reduction SCR (selective Catalytic reduction) denitration technology is a main technology for removing harmful substances and nitrogen oxides in waste gas discharged by coal-fired units at home and abroad. The abrasion resistance of the catalyst is a prerequisite guarantee for high-efficiency work of denitration of the catalyst, and plays a vital role in safe operation of a unit.
At present, for the anti-abrasion experimental detection device of the denitration catalyst, the main principle is to measure the relative abrasion rate by comparing the mass loss of a sample and a test sample. Although these devices take into account the mass loss of the catalyst due to the dust-containing air as a carrier during the test, the amount of air before and after passing through the sample is not controlled differently, which directly causes a large deviation between the detection result and the actual value.
Based on the situation and the current situation, the invention provides the denitration catalyst abrasion strength testing device with adjustable flow and the testing method through deep research aiming at the testing mechanism and the characteristics of each parameter, has the characteristics of stable system operation, strong operability and high reliability of the testing result, and can generate remarkable environmental protection and economic benefit.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a denitration catalyst abrasion strength testing device with adjustable flow and a testing method.
The technical scheme adopted by the invention for solving the problems is as follows: a flow-adjustable denitration catalyst abrasion strength testing device is characterized by comprising a comparison bin, a testing bin, a feeder, a dust remover, an induced draft fan, a flow meter, a first branch pipe, a first adjusting valve, a first flow meter, a second branch pipe, a second adjusting valve and a second flow meter; the utility model discloses a contrast storehouse, test bin, dust remover and draught fan connect gradually, first branch pipe is parallelly connected with the contrast storehouse, the second branch pipe is parallelly connected with the test bin, first governing valve and first flowmeter are installed on first branch pipe, second governing valve and second flowmeter are installed on the second branch pipe, connect the flowmeter on the inlet pipeline in contrast storehouse, connect the feeder on the pipeline between contrast storehouse and the test bin.
The testing method of the denitration catalyst abrasion strength testing device with the adjustable flow comprises the following steps:
respectively loading a catalyst comparison sample and a test sample into a comparison bin and a test bin, and starting an induced draft fan and a dust remover; when the flow area S of the test sample 2Greater than the flow area S of the control sample1When the flow meter is started, the second regulating valve is kept closed, and the rotating speed of the induced draft fan is regulated to enable the indicating value of the flow meter to be Q2And keep stable; opening the first regulating valve until the first flow meter reading is Q13Starting the feeder to carry out abrasion test, and closing the feeder, the dust remover and the induced draft fan in sequence after time T to finish the experiment; when the flow area S of the test sample2Smaller than the flow area S of the comparative sample1When the flow meter is started, the first regulating valve is kept closed, and the rotating speed of the induced draft fan is regulated to enable the indicating value of the flow meter to be Q1And keep stable; opening the second regulating valve to regulate the second flow meter reading to be Q23Starting the feeder to carry out abrasion test, and closing the feeder, the dust remover and the induced draft fan in sequence after time T to finish the experiment;
S1＝d1 2n1 (Ⅰ)；
in the formula:
S1is the flow area of the control sample;
d1is the pore size of the control sample;
n1is the number of wells of the control sample;
S2＝d2 2n2 (Ⅱ)；
in the formula:
S2is the flow area of the test sample;
d2is the pore size of the test sample;
n2is the number of wells of the test sample;
Q2＝S2×Vb (Ⅲ)；
in the formula:
Vbis the standard wind speed;
Q1＝S1×Vb (Ⅳ)；
Q13＝Q2-S1×Vb (Ⅴ)；
Q23＝Q1-S2×Vb (Ⅵ)。
compared with the prior art, the invention has the following advantages and effects: when the abrasion resistance of the catalyst is tested, the air volume passing through the comparison bin and the test bin can be adjusted when the abrasion working condition in the actual operation of the catalyst is simulated, so that the air volume is kept consistent, the error of a test result caused by the difference of the air volume passing through the comparison sample and the air volume passing through the test sample is avoided, and the abrasion strength of the catalyst can be more truly reflected.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention.
In the figure: the device comprises a comparison bin 1, a test bin 2, a feeder 3, a dust remover 4, an induced draft fan 5, a flowmeter 6, a first branch pipe 11, a first regulating valve 12, a first flowmeter 13, a second branch pipe 21, a second regulating valve 22 and a second flowmeter 23.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1, in this embodiment, a flow-adjustable denitration catalyst abrasion strength testing device includes a comparison bin 1, a testing bin 2, a feeder 3, a dust remover 4, an induced draft fan 5, a flowmeter 6, a first branch pipe 11, a first regulating valve 12, a first flowmeter 13, a second branch pipe 21, a second regulating valve 22, and a second flowmeter 23; the device comprises a comparison bin 1, a test bin 2, a dust remover 4 and an induced draft fan 5 which are sequentially connected, wherein a first branch pipe 11 is connected with the comparison bin 1 in parallel, a second branch pipe 21 is connected with the test bin 2 in parallel, a first regulating valve 12 and a first flowmeter 13 are installed on the first branch pipe 11, a second regulating valve 22 and a second flowmeter 23 are installed on the second branch pipe 21, an inlet pipeline of the comparison bin 1 is connected with a flowmeter 6, and the flowmeter 6 is installed in front of an inlet pipeline connector of the first branch pipe 11 and the comparison bin 1; the feeder 3 is connected on the pipeline between the comparison bin 1 and the test bin 2, and the feeder 3 is installed behind the interface of the second branch pipe 21.
The test method comprises the following steps:
respectively loading a catalyst comparison sample and a test sample into a comparison bin 1 and a test bin 2, and starting an induced draft fan 5 and a dust remover 4; when the flow area S of the test sample2Greater than the flow area S of the control sample1When the flow meter is started, the second regulating valve 22 is kept closed, and the rotating speed of the induced draft fan 5 is regulated to enable the indication value of the flow meter 6 to be Q2And keep stable; the first regulating valve 12 is opened and regulated until the reading of the first flowmeter 13 is Q13Starting the feeder 3 for wear test, and closing the feeder 3, the dust remover 4 and the induced draft fan 5 in sequence after a time T to complete the experiment; when the flow area S of the test sample2Smaller than the flow area S of the comparative sample1When the flow meter is started, the first regulating valve 12 is kept closed, and the rotating speed of the induced draft fan 5 is regulated to enable the indication value of the flow meter 6 to be Q1And keep stable; the second regulating valve 22 is opened and regulated until the reading of the second flowmeter 23 is Q23Starting the feeder 3 for wear test, and closing the feeder 3, the dust remover 4 and the induced draft fan 5 in sequence after a time T to complete the experiment;
S1＝d1 2n1 (Ⅰ)；
in the formula:
S1is the flow area of the control sample;
d1is the pore size of the control sample;
n1is the number of wells of the control sample;
S2＝d2 2n2 (Ⅱ)；
in the formula:
S2is the flow area of the test sample;
d2is the pore size of the test sample;
n2Is the number of wells of the test sample;
Q2＝S2×Vb (Ⅲ)；
in the formula:
Vbis the standard wind speed;
Q1＝S1×Vb (Ⅳ)；
Q13＝Q2-S1×Vb (Ⅴ)；
Q23＝Q1-S2×Vb (Ⅵ)。
those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (2)
1. A denitration catalyst abrasion strength testing device with adjustable flow is characterized by comprising a comparison bin (1), a testing bin (2), a feeder (3), a dust remover (4), an induced draft fan (5), a flow meter (6), a first branch pipe (11), a first regulating valve (12), a first flow meter (13), a second branch pipe (21), a second regulating valve (22) and a second flow meter (23); contrast storehouse (1), test chamber (2), dust remover (4) and draught fan (5) connect gradually, first branch pipe (11) are parallelly connected with contrast storehouse (1), second branch pipe (21) are parallelly connected with test chamber (2), install on first branch pipe (11) first governing valve (12) and first flowmeter (13), install on second branch pipe (21) second governing valve (22) and second flowmeter (23), connect flowmeter (6) on the inlet pipeline of contrast storehouse (1), connect feeder (3) on the pipeline between contrast storehouse (1) and test chamber (2).
2. The testing method of the denitration catalyst abrasion strength testing device with the adjustable flow rate as set forth in claim 1, is characterized by comprising the following steps:
respectively loading a catalyst comparison sample and a test sample into a comparison bin (1) and a test bin (2), and starting an induced draft fan (5) and a dust remover (4); when the flow area S of the test sample2Greater than the flow area S of the control sample1When the flow meter is started, the second regulating valve (22) is kept closed, and the rotating speed of the induced draft fan (5) is regulated to enable the indication value of the flow meter (6) to be Q2And keep stable; the first regulating valve (12) is opened and regulated until the reading of the first flowmeter (13) is Q13Starting the feeder (3) for wear test, and closing the feeder (3), the dust remover (4) and the induced draft fan (5) in sequence after a time T to complete the experiment; when the flow area S of the test sample2Smaller than the flow area S of the comparative sample1When the flow meter is started, the first regulating valve (12) is kept closed, and the rotating speed of the induced draft fan (5) is regulated to enable the indication value of the flow meter (6) to be Q1And keep stable; the second regulating valve (22) is opened and regulated until the reading of the second flowmeter (23) is Q23Starting the feeder (3) for wear test, and closing the feeder (3), the dust remover (4) and the induced draft fan (5) in sequence after a time T to complete the experiment;
S1＝d1 2n1 (Ⅰ)；
in the formula:
S1Is the flow area of the control sample;
d1is the pore size of the control sample;
n1is the number of wells of the control sample;
S2＝d2 2n2 (Ⅱ)；
in the formula:
S2is the flow area of the test sample;
d2is the pore size of the test sample;
n2is the number of wells of the test sample;
Q2＝S2×Vb (Ⅲ)；
in the formula:
Vbis the standard wind speed;
Q1＝S1×Vb (Ⅳ)；
Q13＝Q2-S1×Vb (Ⅴ)；
Q23＝Q1-S2×Vb (Ⅵ)。
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