Catalyst module edge hardening liquid with activity

Abstract

The invention discloses an active catalyst module edge hardening liquid, comprising the following ingredients: 30 to 50 weight percent of sodium silicate and active compositions, wherein the active compositions are one of or the mixture of two or more than two of ammonium metavanadate, green copperas and manganese nitrate, the ammonium metavanadate accounts for 0 to 1 weight percent in the hardening liquid, the manganese nitrate accounts for 0 to 5 weight percent in the hardening liquid, and the balance is water. The hardening liquid of the invention causes the end of a catalyst module to be much more antiabrasive, thereby greatly increasing the integral service life and the strength of the module; and under the same condition, the abrasion weight loss ratio of the catalyst module can be reduced by 20 percent, and the service life of the catalyst can be prolonged by more than 30 percent.

Description

technical field [0001] The invention discloses an active catalyst module edge hardening solution. Background technique [0002] At present, the pollution of nitrogen oxides continues to intensify, especially in some big cities such as Beijing, Shanghai, Guangzhou, etc., the nitrogen oxide content greatly exceeds the standard, and even photochemical smog pollution appears in some areas, which has a serious impact on economic development and people's lives . Thermal power plants are the largest pollution source of NOx emissions, accounting for more than 36% of total emissions. Controlling nitrogen oxide emissions has become the third key pollution control task for thermal power plants after flue gas dust removal and desulfurization. With the promulgation of "Emission Standards of Air Pollutants for Thermal Power Plants" (GB13223-2003), the simple low-nitrogen combustion technology can no longer meet the requirements of the current emission standards. Domestic thermal power p...

AI Technical Summary

Problems solved by technology

The dust content of flue gas from foreign power plants is generally less than 30g / Nm 3 , the problem of wear on the catalyst is not prominent; while the types of coal used in China are relatively complex, especially in 2008 when the coal price soared, many power plants had to use low-quality coal, resulting in a very high dust content in the flue gas, many projects as high as 50-60g / Nm 3 , the existing technology does not do edge hardening, when the flue gas passes through the airflow channel of the catalyst, the fly ash particles hit the end of the catalyst rapidly, so the end wears the most serious, and as time goes by, the catalyst module will become shorter and shorter, The service life of the catalyst is greatly reduced, and it brings about the problem of how to fix the catalyst monomer in the module