Reagent for treating nitric oxide discharged by combustion of cremator

Abstract

The invention discloses a treatment reagent for nitric oxide discharged by combustion of a cremator. The treatment reagent for the nitric oxide is prepared from the following components: 95% of a sodium hydroxide aqueous solution, 1.5% of a sodium bicarbonate aqueous solution, 2.49% of a urea solution, 0.05% of sodium sulfide, 0.05% of sodium sulfate and 1% of hydrogen peroxide. The pH value solubility of the sodium hydroxide aqueous solution is larger than or equal to 13, the nitric oxide treatment reagent can be used for treating nitric oxide in a low-temperature state, all indexes after treatment meet the national GB13801-2015 emission standard, the defect that the nitric oxide elimination effect can only reach 30% when the temperature is lower than 300 DEG C traditionally is overcome, and the nitric oxide treatment reagent is suitable for industrial production. Waste gas treated by the nitrogen oxide treatment reagent has no obvious smell and no obvious color, the nitrogen oxide treatment reagent has stable absorption performance and high absorption saturation, the removal rate of nitrogen oxide can be increased, and the cost of the nitrogen oxide treatment reagent is low.

Description

technical field [0001] The present invention relates to the technical field of nitrogen oxide treatment, more particularly, to a kind of nitrogen oxide treatment reagent which is burned and discharged by a cremator. Background technique [0002] Nitrogen oxide (NOx) is a very toxic gas. If it is directly discharged into the atmosphere, it will form eye-catching brown (red) yellow smog, which will spread with the wind and cause pollution to the living and ecological environment of surrounding residents. Among them, the existing cremator will emit nitrogen oxides during the combustion process, which is usually eliminated by urea liquid SCR post-treatment. SCR uses the urea injection system to inject the urea aqueous solution into the exhaust system, which is decomposed into ammonia gas in the exhaust gas flow and injected into the catalyst. Under the action of urea liquid SCR, it reacts with nitrogen oxides and converts them into harmless nitrogen and water. The existing techn...

AI Technical Summary

Problems solved by technology

Among them, the existing cremation furnace will emit nitrogen oxides during the combustion process, which is usually eliminated by urea liquid SCR post-treatment. SCR uses urea injection system to spray urea aqueous solution into the exhaust system, decomposes into ammonia gas in the exhaust gas flow and releases it in the catalyst. Under the action of nitrogen oxides, it reacts with nitrogen oxides to convert them into harmless nitrogen and water. The existing urea liquid SCR post-treatment technology for nitrogen oxides requires high temperature as a carrier. When the temperature is lower than 300 ° C, nitrogen oxides The elimination effect can only reach 30%, but in practice, due to factors such as low cremation volume and low temperature areas in some funeral parlors, the temperature of the first furnace cannot reach 300°C during daily work, resulting in poor nitrogen oxide elimination effect. Therefore, it is necessary to develop a reagent that can also treat nitrogen oxides at low temperatures. For this reason, we propose a reagent for treating nitrogen oxides discharged from cremation furnaces.