Anti-toxic three-way catalyst regenerated cleaning agent and preparation method thereof

Abstract

The invention discloses an anti-toxic three-way catalyst regenerated cleaning agent which is prepared from the following raw materials in parts by weight: 0.7-0.9 part of nanometer montmorillonite, 1.6-1.8 parts of ethyl orthosilicate, a defined amount of hydrochloric acid, a defined amount of ammonium hydroxide, a defined amount of ethyl alcohol, a defined amount of deionized water, 1.5-2 parts of penetrant T, 1.6-1.9 parts of nitric acid, 1.5-1.8 parts of nitrilotriacetic acid, 0.7-0.9 part of ammonium acetate, 0.4-0.6 part of lanthanum acrylate, 1-1.2 parts of carbon nano tube, 0.4-0.5 part of vitamin C and 1-1.2 parts of tetrabutyl titanate. According to the invention, the ammonium acetate, the lanthanum acrylate, the carbon nano tube are used; the ammonium acetate is absorbed by the carbon nano tube; the carbon nano tube can be attached to the catalyst surface; the acetic acid can be decomposed; the catalyst poisoning can be prevented; the vitamin C is used, so that the resistance to oxidation and alkali of the catalyst can be promoted; the poisoning can be avoided.

Description

Technical field [0001] The invention relates to the technical field of cleaning agents for three-way catalytic converters, in particular to an anti-poisoning cleaning agent for regenerating three-way catalytic converters and a preparation method thereof. Background technique [0002] With the country’s stricter and stricter control of nitrogen oxide emissions during the “Twelfth Five-Year Plan” period, selective catalytic reduction (SCR) flue gas denitrification technology has been widely used in the denitrification system of thermal power plants because of its efficient and reliable denitrification performance. The technical core of the SCR flue gas denitrification process is the vanadium tungsten titanium-based catalyst, which has the problem of decreased activity during operation. There are many reasons for catalyst deactivation, including the influence of operating conditions, such as dust in the flue gas and temperature fluctuations that will damage the macroscopic structure...