Method for Determining Attrition Index of Fluidized Bed Catalysts

A fluidized bed catalyst and wear index technology, applied in the direction of removing certain components and weighing, can solve the problems of cumbersome wear index measurement, achieve the effect of saving measurement cost and simplifying the measurement process

Active Publication Date: 2014-10-15
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a method for measuring the wear index of fluidized bed catalysts to solve the tedious problem of measuring the wear index of fluidized bed catalysts in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Place the fluidized bed catalyst sample on an electric vibrating sieve machine to pass through a 100-500 mesh sieve, take the powder that passed the 100-500 mesh, and then dry it in an oven at 105°C for 80 minutes to obtain the sample to be tested. Accurately weigh 50g of the sample to be tested, use air as the blowing gas, set the first-stage decompression pressure at 0.6Mpa, and the second-stage decompression pressure at 0.5Mpa under the operating conditions of the instrument. The mass W1 of the sample to be tested is 47.2g. After continuing to use air injection for 4 hours, weigh the mass W4 of the sample to be tested remaining in the measuring cylinder to be 41.9g, and substitute it into the formula: wear index (% / h)=(W1-W4) / (W1*4)*100, the wear index measured in Example 1 is calculated to be 2.80.

Embodiment 2

[0028] Place the fluidized bed catalyst sample on an electric vibrating sieve machine to pass through a 100-500 mesh sieve, take the powder that passed the 100-500 mesh, and then dry it in an oven at 110°C for 60 minutes to obtain the sample to be tested. Accurately weigh 50g of the sample to be tested, use air as the blowing gas, set the first-stage decompression pressure at 0.8Mpa and the second-stage decompression pressure at 0.4Mpa under the operating conditions of the instrument, weigh the remaining in the barrel after the sample is pre-blown for 1h The mass W1 of the sample to be tested is 47.6g. After continuing to use air injection for 4 hours, weigh the mass W4 of the remaining sample to be tested in the measuring cylinder to be 42.4g. Substitute it into the formula: wear index (% / h)=(W1-W4) / (W1*4)*100, the wear index measured in embodiment 2 is calculated to be 2.73.

Embodiment 3

[0030] Place the fluidized bed catalyst sample on an electric vibrating sieve machine to pass through a 100-500 mesh sieve, take the powder that passed the 100-500 mesh, and then dry it in an oven at 120°C for 40 minutes to obtain the sample to be tested. Accurately weigh 50g of the sample to be tested, use air as the blowing gas, set the first-stage decompression pressure at 0.3Mpa, and the second-stage decompression pressure at 0.2Mpa under the operating conditions of the instrument. The mass W1 of the sample to be tested is 48.1g. After continuing to blow with air for 4 hours, weigh the mass W4 of the sample to be tested remaining in the measuring cylinder to be 43.0g. Substitute it into the formula: wear index (% / h)=(W1-W4) / (W1*4)*100, the wear index measured in embodiment 3 is calculated to be 2.65.

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Abstract

The invention provides a method for determining an abrasion index of a fluidized bed catalyst. The method employs an ALF-1 powder abrasion index determinator to determine the fluidized bed catalyst, and adopts air as a blowing gas in a determination process. The method simplifies determination procedures by employing the ALF-1 powder abrasion index determinator to determine the abrasion index of the fluidized bed catalyst, saves determination cost greatly by adopting the air as the blowing gas compared with by using nitrogen as the blowing gas, and generates no influence on the performance of the fluidized bed catalyst by using the air to blow the fluidized bed catalyst.

Description

technical field [0001] The invention relates to the field of catalyst production, in particular to a method for measuring the wear index of a fluidized bed catalyst. Background technique [0002] At present, in the field of catalysts, the straight tube method is generally used for the determination of catalyst wear index, but the measurement device is very simple, and there are a series of problems such as cumbersome operation, high labor intensity, and many human factors, and no suitable one can be found in a short time. The manufacturer of the measuring device cannot guide the industrial production of the catalyst in time. Therefore, we urgently need a simple and accurate determination method to meet the needs of guiding catalyst production. [0003] At present, the ALF-1 powder wear index tester includes a test cylinder equipped with a blowing orifice plate, a fluidization tube, and a dust collection bag. The device is characterized by the use of two-stage decompression...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04
Inventor 王长琴李艺王权谢锋薛云鹏赵建军宋书壮
Owner CHNA ENERGY INVESTMENT CORP LTD
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