Testing device capable of simultaneously measuring multiple SCR catalysts

Abstract

The invention discloses a testing device capable of simultaneously measuring multiple SCR catalysts. The testing device comprises a gas distributing system, a reaction system and a measuring system, wherein the gas distributing system is provided with multiple gas bottles containing N2, O2, NO, NH3 and SO2 respectively; the reaction system comprises multiple reaction tubes, a high temperature tube furnace wrapping the reaction tubes and an outer sleeve; the measuring system comprises a flue gas analyzer, the data output end of the flue gas analyzer is connected with a computer, and the gas outlet end of the flue gas analyzer is connected with a tail gas recovering device. NO removal efficiency of the SCR catalysts at different temperatures can be measured, NO removal efficiency of four SCR catalysts can be simultaneously measured at certain temperature, NO removal efficiency of the four SCR catalysts of the four SCR catalysts can be simultaneously measured under the conditions of different NH3/NO ratios, different NH3 contents, different NO contents and different O2 contents, NO removal efficiency of the same SCR catalyst at different air speeds can be measured, finally NO removal efficiency of the SCR catalysts in the presence of SO2 and water can be measured, and sulfur and water resistance of the catalysts is researched.

Description

【Technical field】 [0001] The invention belongs to the technical field of thermal energy and power engineering, and relates to an SCR catalyst performance testing device, in particular to a testing device capable of simultaneously measuring multiple SCR catalysts. 【Background technique】 [0002] With the advancement of science and technology, the modernization of human society has developed rapidly, and the scale of globalized industries has also increased day by day, but the environmental problems brought about by rapid development have become increasingly severe. With the increase of emissions of various polluting gases, the environment on which human beings depend for survival is being seriously violated, and at the same time, human health is also being violated. Among common pollutant gases, NO x (mainly refers to NO and NO2) more harmful. Except some NO x It comes from nature itself, and a considerable amount comes from human activities, such as the combustion of foss...

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Problems solved by technology

However, the commonly used laboratory SCR catalyst testing device has many shortcomings: 1. It can only test the NO removal rate of a catalyst under the same working condition; 2. The water supply of the reaction water supply device is not stable enough; 3. There are many existing The SCR catalyst test device is not considered in the SO 2 The NO removal efficiency of the catalyst in the presence of water vapor, even if there is, is directly mixed with NO, O 2 , NH 3 and N 2 SO2 is introduced into the gas path 2 and water vapor to get the final mixed gas, and then pass this mixed gas into the reaction tube, but this will cause NH 3 , SO 2 , O 2 React with water vapor before reaching the catalyst surface in the reaction tube to generate NH 4 HSO 4 powder, and then block the pipeline; 4. When the reaction gas enters the surface of the catalyst in the reaction tube, it is not fully preheated; 5. The operation of replacing the catalyst in the reaction quartz tube is not simple enough

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