Method and device for determining geometric specific surface area of flat plate type catalyst and application

Abstract

The invention discloses a method and device for determining the geometric specific surface area of a flat plate type catalyst and application, and the method comprises the following steps that a flat plate type catalyst plate body is rolled and stamped in sequence so as to extend completely, wherein the flat plate type catalyst plate body is basically free of dislocation and wrinkles, and the rolled flat plate type catalyst plate body is equal to a flat plate type catalyst before bending; according to the fact that the geometric specific surface area of the flat plate type catalyst before bending is same as the geometric specific surface area of a pilot test detection sample, the number of catalyst plate bodies in the pilot test detection unit body is obtained. The method can accurately obtain the geometric specific surface area of the flat plate type catalyst so as to check and accept the newly supplied catalyst, can be used for determining the loading quantity of the plate bodies in the pilot test detection unit body, lays a foundation for testing the reaction performance of the catalyst, improves the accuracy and reliability of the result, and plays an important guiding role in production, acceptance, performance tracking and scrapping of the catalyst.

Description

technical field [0001] The invention belongs to the technical field of SCR flue gas denitrification, and in particular relates to a method, device and application for determining the geometric specific surface area of ​​a flat-plate catalyst. Background technique [0002] SCR flue gas denitrification technology is widely used in coal-fired power plants, and the catalyst is the core of SCR flue gas denitrification technology. When the fly ash content in the flue gas is high, it is generally advisable to use a flat-plate catalyst to prevent fly ash from clogging and wearing, to avoid operating accidents such as excessive performance decay or excessive emissions due to catalyst collapse, and to improve operational safety. "Platform Flue Gas Denitrification Catalyst" (GB / T-31584), "Technical Specifications for Detection of Flue Gas Denitrification Catalysts in Thermal Power Plants" (DL / T 1286) and "Guidelines for Determining Scrapping of Flue Gas Denitrification Catalysts in The...

AI Technical Summary

Problems solved by technology

[0003] Since the catalyst plate will be bent during the production process, the width of the veneer before the plate is bent is not easy to obtain in actual measurement. Generally, it is measured by soft materials such as cotton thread. This method will vary with the user's operation and bending. Different angles lead to errors, resulting in deviations in the measurement of the geometric specific surface area. At the same time, the "Technical Specifications for the Detection of Flue Gas Denitrification Catalysts in Thermal Power Plants" (DL / T 1286) stipulates that when preparing flat-plate catalyst pilot samples, the standard size of the cross-section should be (150mm ± 3mm) × (150mm ± 3mm) for cutting, this size causes the pilot test sample to contain at least one bend, two factors further affect the selection of the number of catalyst plates in the pilot test process, and then affect The reaction performance of flat-plate catalysts may even affect the production, testing, evaluation and scrapping of products

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