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Catalytic particulate matter trap for synergistically purifying NOX and PM

A particulate filter, catalytic technology, applied in the direction of machine/engine, electronic control of exhaust treatment device, diagnosis device of exhaust treatment device, etc., can solve the problem of lack of detection of air tightness and leakage Unable to detect in time, environmental pollution and other problems

Active Publication Date: 2022-08-05
ANQING CSSC DIESEL ENGINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a catalytic particulate filter for synergistic purification of NOX and PM, to solve the lack of a mechanism for detecting air tightness on the particulate filter proposed in the above background technology, during the use of the particulate filter When air leakage occurs, it cannot be detected in time, which will cause pollution to the surrounding environment

Method used

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  • Catalytic particulate matter trap for synergistically purifying NOX and PM
  • Catalytic particulate matter trap for synergistically purifying NOX and PM
  • Catalytic particulate matter trap for synergistically purifying NOX and PM

Examples

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Embodiment 1

[0029] see figure 1 , a catalytic particulate trap for synergistic purification of NOX and PM, comprising: particulate trap body 1, the particulate trap body 1 refers to a wall-flow diesel particulate trap (DPF), the wall is porous rare earth oxide Since the exhaust temperature of the ship engine is much lower than the normal soot oxidation combustion temperature (above 600 ℃), by optimizing and improving the trace catalyst components in the DPF, the NO2 generated by the DOC system is used as the PM oxidant to promote The NO2+PM oxidation reaction greatly reduces the temperature requirement of DPF for PM regeneration, reduces the amount of particle deposition in DPF, and reduces the adverse effects of large particle deposition in DPF and high temperature regeneration on the engine and DPF system;

[0030] see figure 1 , figure 2 , image 3 and Figure 4 , in order to test the air tightness of the working particle trap device, an observation box 2 ( figure 1 The direction...

Embodiment 2

[0036] see figure 1 , figure 2 and image 3 , On the basis of Embodiment 1, an installation support plate 7 is installed on the outer wall of the observation box 2 on the left side, an electric telescopic rod 8 is installed on the outer wall of the installation support plate 7, and a limit block 9 is installed on the moving end of the electric telescopic rod 8 , so that the end of the limit block 9 close to the left observation box 2 extends into the inner cavity of the observation box 2 and fits with the top of the movable plate 4 to prevent the movable plate 4 from moving up, where the movable plate 4 is the left side in the inner cavity of the observation box 2;

[0037] The top wall of the observation box 2 on the right side is provided with a mounting hole. The inner cavity of the mounting hole is slidably inserted with a guide rod 10. The guide rod 10 can move up and down. A first touch switch 12 is installed at the bottom end of the guide rod 10. The first touch swit...

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Abstract

The invention discloses a catalytic particulate matter trap for synergistically purifying NOX and PM in the technical field of marine engines, and the catalytic particulate matter trap comprises a particulate matter trap body, observation boxes are mounted on the outer walls of an inlet and an outlet of the particulate matter trap body in a communicating manner, and movable plates are slidably mounted in inner cavities of the observation boxes; elastic pieces are installed between the outer walls of the movable plates and the inner walls of the observation boxes, an indication box is installed between the two observation boxes in a communicating mode through a connecting pipe, a movable block is slidably installed in an inner cavity of the indication box, and the connecting area of the observation boxes and the connecting pipe is located above the movable plates. According to the device, an observation box is communicated with an inlet and an outlet of a particulate matter trap body, when the particulate matter trap body leaks, an air pressure difference is generated between the inlet and the outlet of the particulate matter trap body, a moving block moves in an inner cavity of an indication box and presses a second touch switch, and an indication lamp works; therefore, a worker can conveniently know the air leakage condition of the particulate matter trap body.

Description

technical field [0001] The invention relates to the technical field of marine engines, in particular to a catalytic particulate matter trap for synergistically purifying NOX and PM. Background technique [0002] There are two main methods of engine emission control: "in-machine purification" and "out-of-machine purification". "In-machine purification" is to optimize the "oil-gas-chamber" matching strategy to improve the combustion process in the cylinder and reduce harmful effects from the source. The amount of emissions generated, "external purification" is to use the particulate filter (DPF), oxidation catalytic converter (DOC) and selective catalytic reduction (SCR) of the exhaust aftertreatment system to control PM, HC, CO and NOX emissions, the coordinated use of internal and external purification measures, is the current development trend of marine diesel engine emission control; [0003] When using a catalytic particle filter to process the exhaust, the exhaust gas i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/035F01N11/00
CPCF01N3/035F01N11/002F01N2550/00F01N2570/14F01N2900/1406Y02T10/40
Inventor 唐彬彬徐洪玲刘宁磊胡伟
Owner ANQING CSSC DIESEL ENGINE