EXHAUST GAS POLLUTION CONTROL FLUID COMPRISING A SOLUBLE BASIC METAL CARBONATE, PROCESS FOR PREPARING SAME AND USE THEREOF FOR INTERNAL COMBUSTION ENGINES

• Main Authors: GONZALEZ SERGE, PASQUIER DAVID, VALLET JACQUES
• Format: Patent
• Language: Chinese; English
• Published: 30.07.2019
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; TRANSPORTING; WEAPONS

The invention relates to a fluid suitable for the pollution control of exhaust gases, in particular of internal combustion engines, making it possible both to carry out the catalytic reduction of thenitrogen oxides (DeNOx) contained in the exhaust gases and to assist in the regeneration of the particulate filter (PF). The fluid is a homogenous aqueous solution of a reducing agent or precursor ofa reducing agent for the DeNOx, and comprises a metal additive for catalyzing the oxidation of particles from the exhaust gases. This metal additive is a basic metal carbonate that is soluble in saidaqueous solution. The invention also describes the method for preparing same, and the use thereof in the pollution control of exhaust gases of internal combustion engines. 本发明涉及一种适用于对废气、特别是内燃机废气进行脱污染的流体，其既可对废气中所含的氮氧化物进行催化还原(DeNOx)，又可对颗粒过滤器(PAF)再生进行辅助。该流体是用于DeNOx过程的还原剂或还原剂前体的均匀水溶液，其包含用于对废气颗粒的氧化进行催化的金属添加剂，所述金属添加剂是可溶于所述水溶液的碱式金属碳酸盐。本发明还描述了流体的制备方法及其在对内燃机废气进行脱污染中的用途。