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Method and device for reducing N2O in tail gas, electronic equipment and storage medium

A technology for exhaust gas and exhaust gas treatment, which is applied in the direction of electronic control of exhaust gas treatment device, exhaust device, diagnosis device of exhaust gas treatment device, etc., can solve problems such as environmental threats, and achieve elimination of threats, reduction of production, and avoidance of accumulation. Effect

Pending Publication Date: 2022-07-05
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This application provides a method for reducing N in exhaust gas 2 O method, device, electronic device and storage medium to solve N 2 O accumulation in the atmosphere, the problem of threats to the environment

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  • Method and device for reducing N2O in tail gas, electronic equipment and storage medium
  • Method and device for reducing N2O in tail gas, electronic equipment and storage medium
  • Method and device for reducing N2O in tail gas, electronic equipment and storage medium

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Embodiment Construction

[0044] In order to make the above objects, features and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0045] like figure 1 As shown, the typical Euro / National VI diesel engine emission technology route is: after the automobile exhaust passes through the supercharger, it enters from the exhaust inlet and flows through the LNT system 1, the DPF system 2, the SCR system 3 and the ASC system 4 in sequence. Among them, LNT system 1 has a negative impact on nitrogen oxides (NO X ) for purification, capture and release, the DPF system 2 captures carbon particles in the exhaust gas, and the SCR system 3 removes the NO released in the LNT system 1 X Catalytic reduction is performed, and the ASC system 4 processes the ammonia leaked from the SCR system 3 .

[0046] ASC system 4 is installed after SCR system 3, and the outlet of ASC sy...

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Abstract

The invention provides a method and device for reducing N2O in tail gas, electronic equipment and a storage medium. The method is applied to a tail gas treatment system of a diesel automobile, the tail gas treatment system comprises an SCR system and an ASC system, and the method comprises the steps that working condition information reflecting the running condition of the tail gas treatment system is obtained in real time, and the working condition information at least comprises the temperature of the tail gas treatment system, the conversion efficiency of the SCR system and the ammonia leakage amount of the SCR system; the temperature of the tail gas treatment system is the outlet temperature of the SCR system or the reaction temperature of the ASC system; according to the working condition information, whether the operation condition of the tail gas treatment system meets the N2O purification condition or not is determined; and when the N2O purification condition is met, the operation parameters of the tail gas treatment system are controlled so as to reduce N2O in the tail gas. By utilizing the method, the generation amount of N2O can be reduced essentially, accumulation of N2O in the atmosphere is avoided, and the threat of N2O to the environment is reduced or eliminated.

Description

technical field [0001] The present application relates to the technical field of exhaust gas treatment, in particular to a method for reducing N in exhaust gas 2 Method, apparatus, electronic device, and storage medium of O. Background technique [0002] In recent years, with the tightening of domestic and foreign emission regulations to varying degrees, the control of diesel engine NO x Aftertreatment devices for (nitrogen oxides) and PM (particulate matter) emissions are widely used. reduce NO x The post-treatment technologies mainly include SCR (Selective Catalytic Reduction, selective catalytic reducer), LNT (lean NO X Trap, lean burn NOx trap), etc., the post-treatment technologies to reduce PM mainly include DPF (Diesel Particulate Filter, Diesel Particulate Filter), etc., while DOC (Diesel Oxidation Catalyst, Diesel Oxidation Catalyst) can reduce CO, HC, etc. Gas emissions, and can assist SCR and DPF work, also widely used in some diesel engines. [0003] SCR te...

Claims

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Application Information

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IPC IPC(8): F01N3/20F01N11/00F01N13/00
CPCF01N3/2066F01N3/208F01N11/002F01N13/00Y02A50/20
Inventor 刘世龙
Owner GREAT WALL MOTOR CO LTD