CN210180854U - Honeycomb formula denitration catalyst experimental apparatus that resistance to wears - Google Patents
Honeycomb formula denitration catalyst experimental apparatus that resistance to wears Download PDFInfo
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- CN210180854U CN210180854U CN201920377651.0U CN201920377651U CN210180854U CN 210180854 U CN210180854 U CN 210180854U CN 201920377651 U CN201920377651 U CN 201920377651U CN 210180854 U CN210180854 U CN 210180854U
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Abstract
The utility model relates to a honeycomb formula denitration catalyst experimental apparatus that resistance to wears, mainly used nitrogen pollution gas's denitration catalyst physical and chemical characteristics test's experimental apparatus and method. The utility model comprises a fan, a Venturi converging device, a cyclone separator, a sample bin, a comparison bin, a spiral feeder, a material box, a weighing device and a bag-type dust remover; the fan converges the ware with the venturi and is connected, and the venturi converges the ware and is connected with cyclone, and weighing device installs in cyclone's lower part, and cyclone's upper portion is connected with the sack cleaner, and sample storehouse and contrast storehouse all converge the ware with the venturi and be connected, and screw feeder is connected with the sample storehouse, and the workbin is connected with screw feeder. This honeycomb formula denitration catalyst experimental apparatus that resistance to wears can simulate actual catalyst in service, the wearing and tearing operating mode of honeycomb catalyst, eliminates wearing and tearing material because of receiving the influence of gravity and producing differential wearing and tearing to the different stress surfaces of catalyst sample, influences the accuracy of resistance to wear performance test.
Description
Technical Field
The utility model relates to a honeycomb formula denitration catalyst experimental apparatus that resistance to wears, the experimental apparatus of mainly used nitrogen gaseous pollutants's denitration catalyst physical and chemical characteristic test.
Background
NOxIs one of the main atmospheric pollutants causing harmful substances such as acid rain, haze and the like, and the thermal power generation enterprises and industrial boiler using enterprises are typical NOxA gas generation source. China's NOxThe emission of gas has strict industrial standards and national standards, and the selective Catalytic reduction SCR (selective Catalytic reduction) denitration technology is the main technology which is applied most at home and abroad and is used for removing nitrogen oxides in flue gas. The catalyst is used as the core of the SCR denitration process and mainly comprises three types, namely honeycomb type catalysts, flat plate type catalysts and corrugated plate type catalysts, wherein the honeycomb type catalysts are most applied at home, and the anti-wear physicochemical property of the honeycomb type catalysts directly influences the denitration efficiency and the operation condition of a flue gas denitration system.
At present, an experimental detection device for a honeycomb denitration catalyst is mainly a device introduced in a honeycomb catalyst abrasion resistance evaluation device of patent CN204630873 and a similar device thereof. The experiment tables in the devices are horizontally built, and when the catalyst abrasion resistance test is carried out, abrasion materials are influenced by gravity, so that large abrasion deviation can be caused to the upper surface and the lower surface of the catalyst, and the abrasion resistance of the catalyst cannot be well reacted. Secondly, the adopted wear materials are all fine gravel materials, and the whole experiment platform is in a positive pressure state, so that the environment is polluted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a honeycomb formula denitration catalyst experimental apparatus that resistance to wears that structural design is reasonable.
The utility model provides a technical scheme that above-mentioned problem adopted is: this honeycomb formula denitration catalyst experimental apparatus that resistance to wears, its structural feature lies in: comprises a fan, a Venturi confluence device, a cyclone separator, a sample bin, a comparison bin, a spiral feeder, a material box, a weighing device and a bag-type dust remover; the fan is connected with the venturi converging device, the venturi converging device is connected with the cyclone separator, the weighing device is installed on the lower portion of the cyclone separator, the upper portion of the cyclone separator is connected with the bag-type dust collector, the sample bin and the comparison bin are connected with the venturi converging device, the screw feeder is connected with the sample bin, and the material box is connected with the screw feeder.
Furthermore, a first openable sealing device and a second openable sealing device are respectively arranged on the sample bin and the comparison bin.
Further, the device also comprises an air supply pipe, a pipeline, a converging pipeline, a material containing pipeline, a clean air pipe, a feeding pipeline and a fine ash pipeline; the fan converges the ware with the venturi and passes through the blast pipe and be connected, the venturi converges the ware and passes through the pipe connection with cyclone, cyclone passes through fine grey pipe connection with the sack cleaner, the one end in sample storehouse and the one end in contrast storehouse converge the ware with the venturi and pass through converging the pipe connection, the other end in sample storehouse and the other end in contrast storehouse are connected with respectively and contain material pipeline and clean tuber pipe, screw feeder and contain material pipe connection, the workbin passes through the feed pipe with screw feeder and is connected.
Furthermore, install the governing valve No. one on the blast pipe, install No. two governing valves and prevent stifled type differential pressure gauge No. one on the material containing pipeline, install No. three governing valves and prevent stifled type differential pressure gauge No. two on the clean tuber pipe.
Furthermore, No. two governing valves, screw feed ware, anti-blocking type differential pressure gauge and sample storehouse loop through containing the material pipe connection along air current direction, No. three governing valves, No. two anti-blocking type differential pressure gauge and contrast storehouse loop through clean tuber pipe connection along air current direction.
Furthermore, the inlet convergent pipeline of the venturi convergence device is connected with the air supply pipe, the outlet divergent pipeline of the venturi convergence device is connected with the pipeline, and the middle throat pipe of the venturi convergence device is connected with the convergence pipeline.
Further, the weighing device is arranged at the bottom of the cyclone separator, and the fine ash pipeline is connected with the top of the cyclone separator.
Further, another technical object of the utility model is to provide an experimental method of honeycomb formula denitration catalyst experimental apparatus that resistance to wears.
The above technical object of the present invention can be achieved by the following technical solutions.
An experimental method of a honeycomb type denitration catalyst abrasion-resistant experimental device is characterized in that: the experimental method is as follows: respectively opening the first openable sealing device and the second openable sealing device, putting the sample into the sample bin, putting the comparison sample into the comparison bin, respectively covering the first openable sealing device and the second openable sealing device, and sealing; opening a first regulating valve, a second regulating valve and a third regulating valve, and then starting the fan; under the action of negative pressure generated by the Venturi confluence device, air respectively enters a material containing pipeline and a clean air pipe, the opening degrees of a second regulating valve and a third regulating valve are regulated according to the readings of a first anti-blocking type differential pressure gauge and a second anti-blocking type differential pressure gauge, so that the air speed passing through a sample bin and a comparison bin reaches the experimental requirement, and then a screw feeder is started, so that experimental abrasion materials enter the sample bin through the material containing pipeline to carry out abrasion experiment on the sample; the abraded material is collected in a converging pipeline together with air passing through a comparison cabin after passing through a sample cabin, then enters a Venturi converging device, and then passes through a cyclone separator, a fine ash pipeline and a bag-type dust collector in sequence through a pipeline, wherein larger particles are collected by the cyclone separator and fall into a weighing device for weighing.
Furthermore, the joint of the middle throat pipe of the Venturi collector and the collecting pipeline is negative pressure.
Furthermore, the elbow of the converging pipeline and the throat of the Venturi converging device adopt enamel plating or abrasion-proof treatment processes.
Compared with the prior art, the utility model has the advantages of it is following: the honeycomb type denitration catalyst abrasion-resistant experimental device can simulate the abrasion working condition of the honeycomb catalyst in the actual catalyst operation, and eliminate the influence on the accuracy of abrasion resistance test caused by the differential abrasion of abrasion materials on different stress surfaces of a catalyst sample due to the influence of gravity; meanwhile, components of the whole device which are easy to generate leakage pollution are all in a negative pressure state through the Venturi converging device, so that the pollution of the experimental device to the environment is effectively avoided; moreover, the pressure gauge selects an anti-blocking type differential pressure gauge with high sensitivity, and the reliability of the differential pressure gauge is effectively improved.
Drawings
Fig. 1 is the utility model discloses honeycomb formula denitration catalyst experimental apparatus that resistance to wears's schematic structure.
In the figure: the device comprises a fan 1, a Venturi confluence device 2, a cyclone separator 3, a sample bin 4, a comparison bin 5, a screw feeder 6, a material box 7, a weighing device 8, a bag-type dust collector 9, a first regulating valve 11, a second regulating valve 12, a third regulating valve 13, a first openable sealing device 14, a second openable sealing device 15, an air supply pipe 21, a pipeline 22, a confluence pipeline 23, a material containing pipeline 24, a clean air pipe 25, a feeding pipeline 26, a fine ash pipeline 27, a first anti-blocking type differential pressure gauge 31 and a second anti-blocking type differential pressure gauge 32.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1, it should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no essential technical significance, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes should still fall within the scope of the present invention. Meanwhile, in the present specification, if the terms such as "upper", "lower", "left", "right", "middle" and "one" are used, they are not intended to limit the scope of the present invention, but to limit the relative relationship between the terms and the terms, and the scope of the present invention is not to be considered as the scope of the present invention.
The honeycomb type denitration catalyst anti-wear experimental device in the embodiment comprises a fan 1, a venturi converging device 2, a cyclone separator 3, a sample bin 4, a comparison bin 5, a screw feeder 6, a material box 7, a weighing device 8, a bag-type dust remover 9, an air supply pipe 21, a pipeline 22, a converging pipeline 23, a material containing pipeline 24, a clean air pipe 25, a feeding pipeline 26 and a fine ash pipeline 27.
In the embodiment, the fan 1 is connected with the venturi converging device 2, the venturi converging device 2 is connected with the cyclone separator 3, the weighing device 8 is arranged at the lower part of the cyclone separator 3, the upper part of the cyclone separator 3 is connected with the bag-type dust collector 9, namely the weighing device 8 is arranged at the bottom of the cyclone separator 3, and the fine ash pipeline 27 is connected with the top of the cyclone separator 3; the sample bin 4 and the comparison bin 5 are respectively provided with a first openable sealing device 14 and a second openable sealing device 15; sample storehouse 4 and comparison storehouse 5 all are connected with venturi converging ware 2, and screw feeder 6 is connected with sample storehouse 4, and workbin 7 is connected with screw feeder 6.
Under the general condition, fan 1 and venturi converge ware 2 and pass through blast pipe 21 and be connected, venturi converges ware 2 and cyclone 3 and passes through pipeline 22 and be connected, cyclone 3 and sack cleaner 9 pass through fine ash pipeline 27 and be connected, the one end of sample storehouse 4 and the one end of comparison storehouse 5 converge ware 2 and pass through converging pipeline 23 and be connected, the other end of sample storehouse 4 and the other end of comparison storehouse 5 are connected with respectively and contain material pipeline 24 and clean tuber pipe 25, screw feeder 6 is connected with and contains material pipeline 24, workbin 7 is connected through feeding pipeline 26 with screw feeder 6.
In the embodiment, a first regulating valve 11 is arranged on the blast pipe 21, a second regulating valve 12 and a first anti-blocking type differential pressure gauge 31 are arranged on the material containing pipeline 24, and a third regulating valve 13 and a second anti-blocking type differential pressure gauge 32 are arranged on the clean air pipe 25; no. two governing valves 12, screw feeder 6, anti-blocking type differential pressure gauge 31 and sample storehouse 4 loop through containing material pipeline 24 along the air current direction and are connected, and No. three governing valve 13, anti-blocking type differential pressure gauge 32 and contrast storehouse 5 loop through clean tuber pipe 25 along the air current direction and are connected.
In the embodiment, an inlet reducing pipeline of the Venturi confluence device 2 is connected with the blast pipe 21, an outlet reducing pipeline of the Venturi confluence device 2 is connected with the pipeline 22, and a middle throat pipe of the Venturi confluence device 2 is connected with the confluence pipeline 23; the joint of the middle throat of the Venturi collector 2 and the collecting pipeline 23 is negative pressure; the elbow of the converging pipeline 23 and the throat of the Venturi converging device 2 adopt enamel plating or abrasion-proof treatment process.
The experimental method of the abrasion-resistant experimental device for the honeycomb type denitration catalyst in the embodiment is as follows: respectively opening the first openable sealing device 14 and the second openable sealing device 15, putting a sample into the sample bin 4, putting a comparison sample into the comparison bin 5, respectively covering the first openable sealing device 14 and the second openable sealing device 15, and sealing; after the first regulating valve 11, the second regulating valve 12 and the third regulating valve 13 are opened, the fan 1 is started; under the action of negative pressure generated by the Venturi combiner 2, air respectively enters a material containing pipeline 24 and a clean air pipe 25, the opening degrees of a second regulating valve 12 and a third regulating valve 13 are regulated according to the readings of a first anti-blocking differential pressure gauge 31 and a second anti-blocking differential pressure gauge 32, so that the air speeds passing through a sample bin 4 and a comparison bin 5 reach the experimental requirements, and then a screw feeder 6 is started, so that experimental wear materials enter the sample bin 4 through the material containing pipeline 24 to carry out a wear experiment on the sample; the abraded material is collected in a converging pipeline 23 together with air passing through a comparison bin 5 after passing through a sample bin 4, then enters a Venturi converging device 2, and then passes through a pipeline 22 to sequentially pass through a cyclone separator 3, a fine ash pipeline 27 and a bag-type dust collector 9, wherein larger particles are collected by the cyclone separator 3 and fall into a weighing device 8 for weighing.
The honeycomb type denitration catalyst abrasion-resistant experimental device can simulate the abrasion working condition of the honeycomb catalyst in the actual catalyst operation, and eliminate the influence on the accuracy of abrasion resistance test caused by the differential abrasion of abrasion materials on different stress surfaces of a catalyst sample due to the influence of gravity; meanwhile, components of the whole device which are easy to generate leakage pollution are all in a negative pressure state through the Venturi converging device 2, so that the pollution of the experimental device to the environment is effectively avoided; moreover, the pressure gauge selects an anti-blocking type differential pressure gauge with high sensitivity, and the reliability of the differential pressure gauge is effectively improved.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides a honeycomb formula denitration catalyst experimental apparatus that resistance to wears which characterized in that: comprises a fan (1), a Venturi confluence device (2), a cyclone separator (3), a sample bin (4), a comparison bin (5), a spiral feeder (6), a feed box (7), a weighing device (8) and a bag-type dust remover (9); fan (1) converges ware (2) with the venturi and is connected, the venturi converges ware (2) and is connected with cyclone (3), the lower part in cyclone (3) is installed in weighing device (8), the upper portion and the sack cleaner (9) of cyclone (3) are connected, sample storehouse (4) and contrast storehouse (5) all converge ware (2) with the venturi and are connected, screw feed ware (6) are connected with sample storehouse (4), workbin (7) are connected with screw feed ware (6).
2. The anti-abrasion experimental device for the honeycomb type denitration catalyst according to claim 1, wherein: and a first openable sealing device (14) and a second openable sealing device (15) are respectively arranged on the sample bin (4) and the comparison bin (5).
3. The anti-abrasion experimental device for the honeycomb type denitration catalyst according to claim 1, wherein: also comprises an air supply pipe (21), a pipeline (22), a converging pipeline (23), a material containing pipeline (24), a clean air pipe (25), a feeding pipeline (26) and a fine ash pipeline (27); fan (1) and venturi converge ware (2) and are connected through blast pipe (21), venturi converges ware (2) and cyclone (3) and is connected through pipeline (22), cyclone (3) and sack cleaner (9) are connected through fine ash pipeline (27), the one end of sample storehouse (4) and the one end of comparing storehouse (5) converge ware (2) and are connected through converging pipeline (23) with the venturi, the other end of sample storehouse (4) and the other end of comparing storehouse (5) are connected with respectively and contain material pipeline (24) and clean tuber pipe (25), screw feeder (6) are connected with containing material pipeline (24), workbin (7) are connected through feeding pipeline (26) with screw feeder (6).
4. The anti-abrasion experimental device for the honeycomb type denitration catalyst according to claim 3, wherein: install governing valve (11) No. one on blast pipe (21), install No. two governing valves (12) and anti-blocking type differential pressure gauge (31) No. one on containing material pipeline (24), install No. three governing valve (13) and anti-blocking type differential pressure gauge (32) No. two on clean tuber pipe (25).
5. The anti-abrasion experimental device for the honeycomb type denitration catalyst according to claim 4, wherein: no. two governing valves (12), screw feeder (6), anti-blocking type differential pressure gauge (31) and sample storehouse (4) loop through along the air current direction and contain material pipeline (24) to be connected, No. three governing valves (13), anti-blocking type differential pressure gauge (32) and contrast storehouse (5) loop through clean tuber pipe (25) along the air current direction and are connected.
6. The anti-abrasion experimental device for the honeycomb type denitration catalyst according to claim 1, wherein: the inlet reducing pipeline of the Venturi collector (2) is connected with the air supply pipe (21), the outlet reducing pipeline of the Venturi collector (2) is connected with the pipeline (22), and the middle throat pipe of the Venturi collector (2) is connected with the collecting pipeline (23).
7. The anti-abrasion experimental device for the honeycomb type denitration catalyst according to claim 3, wherein: the weighing device (8) is arranged at the bottom of the cyclone separator (3), and the fine ash pipeline (27) is connected with the top of the cyclone separator (3).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044754A (en) * | 2019-03-25 | 2019-07-23 | 华电电力科学研究院有限公司 | A kind of wear-resistant experimental provision of honeycomb type denitrification catalyst and experimental method |
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- 2019-03-25 CN CN201920377651.0U patent/CN210180854U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044754A (en) * | 2019-03-25 | 2019-07-23 | 华电电力科学研究院有限公司 | A kind of wear-resistant experimental provision of honeycomb type denitrification catalyst and experimental method |
| CN110044754B (en) * | 2019-03-25 | 2023-11-24 | 华电电力科学研究院有限公司 | Honeycomb denitration catalyst abrasion resistance experimental device and experimental method |
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