CN203432870U - SCR (selective catalytic reduction) denitrification catalyst wear strength test device - Google Patents
SCR (selective catalytic reduction) denitrification catalyst wear strength test device Download PDFInfo
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- CN203432870U CN203432870U CN201320581216.2U CN201320581216U CN203432870U CN 203432870 U CN203432870 U CN 203432870U CN 201320581216 U CN201320581216 U CN 201320581216U CN 203432870 U CN203432870 U CN 203432870U
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- main pipeline
- sand
- sand hopper
- caliber end
- sample storehouse
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Abstract
The utility model discloses an SCR (selective catalytic reduction) denitrification catalyst wear strength test device comprising a blower, a comparison sample bin, a test sample bin and a wear agent collector which are communicated with one another through a main pipeline, wherein the comparison sample bin is connected with the test sample bin in series or in parallel; a sand hopper which is communicated with the main pipeline is arranged on the main pipeline in front of an inlet of the test sample bin; a ventrui tube is arranged at the communicated position with the sand hopper in the main pipeline, the big-caliber end of the ventrui tube is positioned in front of a sand outlet of the sand hopper along the airflow direction, the small-caliber end of the ventrui tube is positioned at the sand outlet of the sand hopper, the inside diameter of the big-caliber end of the ventrui tube is equal to that of the main pipeline and the big-caliber end is in sealed connection with the inner wall of the main pipeline. According to the test device disclosed by the utility model, the ventrui tube is arranged at the intersection between the sand outlet and airflow to increase the gas flow rate, so that the sand coming down from the sand hopper can quickly enter the main pipeline and can not flow back, the amount of the sand coming down from the sand hopper is accurate and uniform, and the accuracy of the wear strength test is improved.
Description
Technical field
The utility model relates to a kind of device for detecting performance of catalyzer, is specifically related to a kind of SCR denitrating catalyst tear strength proving installation.
Background technology
China's coal-fired plant flue gas ash content is high, cause catalyst abrasion, obstruction, poisoning, catalyzer stops up, the poisoning regeneration activity recovery that passes through, and catalyst abrasion is to destroy catalyzer physical arrangement, cannot regenerate, make wearing and tearing become the key factor of catalyst consumption.Therefore, the test of the tear strength of SCR denitrating catalyst becomes a conventional sense content.
As depicted in figs. 1 and 2, SCR denitrating catalyst tear strength proving installation comprises blower fan, comparative sample storehouse, specimen sample storehouse and the wearing and tearing agent gathering-device being communicated with by main pipeline, main pipeline before the entrance of specimen sample storehouse is provided with the sand hopper being communicated with main pipeline, comparative sample storehouse and specimen sample storehouse series connection (Fig. 1) or (Fig. 2) in parallel.During test, two samples, respectively as specimen and comparative sample, are wrapped up sample with kaowool, be placed in sample bin; In sand hopper, pack sand into as wearing and tearing agent, the sand getting off from sand hopper is brought main pipeline into by air-flow, and then enters specimen sample storehouse specimen is carried out to wear testing; Tear strength calculates by following formula:
In formula:
ξ-tear strength, %/kg;
Quality before the test of W1-comparative sample, g;
Quality after the test of W2-comparative sample, g;
Quality before the test of W3-specimen, g;
Quality after the test of W4-specimen, g;
W-wearing and tearing agent quality, kg.
But, there is following problem in existing SCR denitrating catalyst tear strength proving installation: as shown in Figure 3, the lower sand direction of sand hopper 1 is vertical with airflow direction, so in the situation that having air-flow, sand easily refluxes and disperses to cause lower sand inaccurate, inhomogeneous, thereby causes tear strength test result inaccurate.
Summary of the invention
In view of this, the utility model provides a kind of SCR denitrating catalyst tear strength proving installation, can guarantee that the sand getting off from sand hopper does not reflux, and lower sand amount accurately, evenly, improves the accuracy of tear strength test.
SCR denitrating catalyst tear strength proving installation of the present utility model, comprise the blower fan being communicated with by main pipeline, comparative sample storehouse, specimen sample storehouse and wearing and tearing agent gathering-device, described comparative sample storehouse and specimen sample storehouse serial or parallel connection, main pipeline before the entrance of described specimen sample storehouse is provided with the sand hopper being communicated with main pipeline, in described main pipeline, with the connectivity part of sand hopper, Venturi tube is installed, the heavy caliber end of described Venturi tube is positioned at before the lower sand mouth of sand hopper along airflow direction, the small-caliber end of Venturi tube is positioned at the lower sand mouth place of sand hopper, the heavy caliber end of described Venturi tube equates and is connected with main pipeline inner wall sealing with main pipeline internal diameter.
Further, the small-caliber end of described Venturi tube is 1/2nd of main pipeline internal diameter.
The beneficial effects of the utility model are: the utility model has been installed a Venturi tube in the intersection of lower sand mouth and air-flow, air-flow from the coarse to fine, to accelerate gas flow rate, make the sand getting off from sand hopper can enter rapidly main pipeline, play the effect of water conservancy diversion, and gas forms " vacuum " district at the rear side of venturi outlet, the sand of lower sand mouth is produced to certain swabbing action, guaranteed that sand does not reflux, therefore guarantee time sand amount accurately, evenly, improved the accuracy of tear strength test.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
Fig. 1 is the structural representation (series connection) of SCR denitrating catalyst tear strength proving installation;
Fig. 2 is the structural representation (parallel connection) of SCR denitrating catalyst tear strength proving installation;
Fig. 3 is the partial structurtes schematic diagram (sand hopper and specimen sample storehouse) of existing SCR denitrating catalyst tear strength proving installation; Fig. 4 is the partial structurtes schematic diagram (sand hopper and specimen sample storehouse) of SCR denitrating catalyst tear strength proving installation of the present utility model.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.
As Fig. 1, shown in Fig. 2 and Fig. 4, SCR denitrating catalyst tear strength proving installation of the present utility model, comprise the blower fan being communicated with by main pipeline, comparative sample storehouse, specimen sample storehouse and wearing and tearing agent gathering-device, described comparative sample storehouse and specimen sample storehouse serial or parallel connection, main pipeline 3 before 2 entrances of described specimen sample storehouse is provided with the sand hopper 1 being communicated with main pipeline 3, in described main pipeline 3, with the connectivity part of sand hopper 1, Venturi tube 4 is installed, the heavy caliber end of described Venturi tube 4 is positioned at before the lower sand mouth of sand hopper 1 along airflow direction, the small-caliber end of Venturi tube 4 is positioned at the lower sand mouth place of sand hopper 1, the heavy caliber end of described Venturi tube 4 equates and is connected with main pipeline 3 inner wall sealings with main pipeline 3 internal diameters.
In the present embodiment, the small-caliber end of described Venturi tube 4 is 1/2nd of main pipeline 3 internal diameters.
The utility model in use, Venturi tube 4 by air-flow from the coarse to fine, accelerated gas flow rate, make the sand getting off from sand hopper 1 enter rapidly main pipeline 3, and gas forms " vacuum " district at the rear side of Venturi tube 4 outlets, and the sand of lower sand mouth is produced to certain swabbing action, has guaranteed that sand does not reflux, therefore guarantee time sand amount accurately, evenly, improved the accuracy of tear strength test.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although by the utility model being described with reference to preferred embodiment of the present utility model, but those of ordinary skill in the art is to be understood that, can to it, make various changes in the form and details, and not depart from the spirit and scope of the present utility model that appended claims limits.
Claims (2)
1. a SCR denitrating catalyst tear strength proving installation, comprise the blower fan being communicated with by main pipeline, comparative sample storehouse, specimen sample storehouse and wearing and tearing agent gathering-device, described comparative sample storehouse and specimen sample storehouse serial or parallel connection, main pipeline before the entrance of described specimen sample storehouse is provided with the sand hopper being communicated with main pipeline, it is characterized in that: in described main pipeline, with the connectivity part of sand hopper, Venturi tube is installed, the heavy caliber end of described Venturi tube is positioned at before the lower sand mouth of sand hopper along airflow direction, the small-caliber end of Venturi tube is positioned at the lower sand mouth place of sand hopper, the heavy caliber end of described Venturi tube equates and is connected with main pipeline inner wall sealing with main pipeline internal diameter.
2. SCR denitrating catalyst tear strength proving installation according to claim 1, is characterized in that: the small-caliber end of described Venturi tube is 1/2nd of main pipeline internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581216.2U CN203432870U (en) | 2013-09-18 | 2013-09-18 | SCR (selective catalytic reduction) denitrification catalyst wear strength test device |
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| CN201320581216.2U CN203432870U (en) | 2013-09-18 | 2013-09-18 | SCR (selective catalytic reduction) denitrification catalyst wear strength test device |
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| CN203432870U true CN203432870U (en) | 2014-02-12 |
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| CN201320581216.2U Expired - Lifetime CN203432870U (en) | 2013-09-18 | 2013-09-18 | SCR (selective catalytic reduction) denitrification catalyst wear strength test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092796A (en) * | 2016-07-28 | 2016-11-09 | 龙净科杰环保技术（上海）有限公司 | It is applicable to polishing machine test equipment and the method for testing of SCR denitration |
| CN106442192A (en) * | 2016-08-27 | 2017-02-22 | 华电电力科学研究院 | Apparatus and method for detecting wear resistance of flue gas denitration catalyst |
| CN113533023A (en) * | 2021-07-14 | 2021-10-22 | 华电电力科学研究院有限公司 | Flow-adjustable denitration catalyst abrasion strength testing device and testing method |
-
2013
- 2013-09-18 CN CN201320581216.2U patent/CN203432870U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092796A (en) * | 2016-07-28 | 2016-11-09 | 龙净科杰环保技术（上海）有限公司 | It is applicable to polishing machine test equipment and the method for testing of SCR denitration |
| CN106442192A (en) * | 2016-08-27 | 2017-02-22 | 华电电力科学研究院 | Apparatus and method for detecting wear resistance of flue gas denitration catalyst |
| CN113533023A (en) * | 2021-07-14 | 2021-10-22 | 华电电力科学研究院有限公司 | Flow-adjustable denitration catalyst abrasion strength testing device and testing method |
| CN113533023B (en) * | 2021-07-14 | 2023-06-27 | 华电电力科学研究院有限公司 | Flow-adjustable denitration catalyst abrasion strength testing device and testing method |
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| C14 | Grant of patent or utility model | ||
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Address after: 401336 Chongqing City, South Bank of the Yangtze River Road, No. 11 Patentee after: SPIC YUANDA ENVIRONMENTAL PROTECTION CATALYST CO.,LTD. Address before: 401336 Chongqing City, South Bank of the Yangtze River Road, No. 11 Patentee before: CHONGQING YUANDA CATALYST MANUFACTURING Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |