Diesel engine tail gas after-treatment system meeting near-zero emission

An exhaust gas post-treatment and near-zero emission technology, which is applied in the fields of exhaust gas treatment, electronic control of exhaust gas treatment devices, and diagnostic devices of exhaust gas treatment devices, etc., can solve the problem of large intermediate energy loss, high fuel consumption rate and large consumption. Fuel and other issues, to achieve the effect of meeting the requirements of emission regulations, high conversion efficiency, and high-efficiency catalytic conversion

Pending Publication Date: 2021-06-01
KAILONG HIGH TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many disadvantages in increasing the exhaust gas temperature by controlling the fuel consumption in the diesel engine. It will consume a large amount of fuel. At the same time, under the conditions of low speed and low load of the diesel engine, the combustion efficiency is low and the fuel consumption rate is high.
Moreover, the energy generated by combustion has to pass through the turbocharger of the diesel engine and the exhaust pipeline, and the energy loss in the middle is large.

Method used

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  • Diesel engine tail gas after-treatment system meeting near-zero emission
  • Diesel engine tail gas after-treatment system meeting near-zero emission
  • Diesel engine tail gas after-treatment system meeting near-zero emission

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Embodiment Construction

[0017] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be intervening elements at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpos...

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Abstract

The invention discloses a diesel engine tail gas after-treatment system meeting near-zero emission. The system integrates the functions of a diesel engine PNA adsorptive NOx catalyst, a Mini-Burner micro burner, an SCRF catalyst, an SCR catalyst, an ASC ammonia trapping system and an electric control system, carries out coordinated treatment on main pollutants PM and NOx in diesel engine tail gas, and can carry out heat management temperature raising on a diesel engine under a low-temperature working condition, and efficient catalytic conversion of the diesel engine after-treatment system is achieved. According to the system scheme, the higher conversion efficiency of NOx can be achieved, the requirement of higher emission regulations is met, and the system is suitable for application and popularization.

Description

technical field [0001] The invention relates to the technical field of exhaust gas aftertreatment, in particular to a diesel engine exhaust aftertreatment system satisfying near-zero emissions. Background technique [0002] With the continuous stringent pollutant emission regulations of diesel engines, the emission limits of nitrogen oxides (NOx) and particulate matter (PM) of diesel engines are close to zero emissions. For the selective catalytic reduction SCR system, an additional heating system is required to increase the emission of nitrogen oxides under low temperature conditions. Therefore, it is necessary to study an exhaust gas heating system with better reliability, more compact space size and lower cost. For particulate filter DPF systems, an additional electronic heating system is required for efficient and reliable regeneration of the DPF. There are many disadvantages in increasing the temperature of the exhaust gas by controlling the fuel consumption in the di...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/00F01N11/00F01N3/20F01N9/00
CPCF01N13/009F01N13/008F01N11/00F01N3/208F01N2610/02F01N2610/146Y02T10/12Y02T10/40
Inventor 朱磊臧志成邹海平许晓巍陈鹏曾伟刘德文
Owner KAILONG HIGH TECH
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