Combustor used for DPF regeneration

A burner and DPF technology, which is applied in the direction of machines/engines, noise reduction devices, exhaust treatment, etc., can solve problems such as inconvenient use, and achieve the effect of high reliability and simple structure

Pending Publication Date: 2018-06-22
黄育新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For engines with higher power, since a high-power high-pressure fan with thousands of watts is required, vehicle generators or batteries do not have such power supply capacity, so an external power supply is required for DPF regeneration, which is very inconvenient to use

Method used

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  • Combustor used for DPF regeneration
  • Combustor used for DPF regeneration
  • Combustor used for DPF regeneration

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0021] The burner shown in the figure has air distribution valve 1, figure 1 The air flow distribution valve 1 is located in the assisted gas flow equalization distribution chamber 3, Figure 5 The air flow distribution valve is radially connected with the combustion-supporting gas flow equalization distribution chamber 3 and the exhaust gas mixing chamber 15. The air distribution valve 1 has three passages, the first passage communicates with the exhaust pipe 2 of the diesel engine, the second passage communicates with the combustion-supporting gas flow equalization distribution chamber 3 , and the third passage communicates with the exhaust gas mixing chamber 15 . For the burner connected in the axial direction, the third passage can be connected to the exhaust gas mixing chamber 15 through a closed-end porous pipe 4 with a multi-hole pipe wall, so that the incoming airflow can be evenly distributed in the exhaust gas mixing chamber 15 . There is a rotatable valve plate 5 i...

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Abstract

The invention provides a combustor used for DPF regeneration. The combustor comprises a combustion cylinder, a diesel oil atomizer and an ignition mechanism; the diesel oil atomizer is used for providing atomized diesel oil for the combustion cylinder, the ignition mechanism is used for igniting the atomized diesel oil, the combustor is provided with a tee-joint pipe, a first passage of the tee-joint pipe is communicated with an exhaust pipeline of a diesel engine, a second passage communicates with a combustion supporting air flow equilibrium distribution chamber, a third passage communicateswith a tail gas mixing cavity way, an air flow between the second passage and the third passage is distributed by a valve, a porous cylinder is arranged in the combustion supporting air flow equilibrium distribution chamber, the inner wall of the porous cylinder is connected with multiple radial flow guide plates, the combustion cylinder is located in the tail gas mixing cavity way, the front endis located in the porous cylinder, the rear end is communicated with the tail gas mixing cavity way, a nozzle of the diesel oil atomizer and the ignition mechanism are located at the front end of thecombustion cylinder, and the rear end of the tail gas mixing cavity way is used for communicating with a DPF inlet end.

Description

technical field [0001] The present invention relates to diesel engine emission control technology, especially combustors for particulate filter (DPF) regeneration. Background technique [0002] During the use of the particulate filter (DPF) in the exhaust after-treatment technology of diesel engines, more and more particulate matter accumulates in the DPF, which causes the exhaust back pressure of the engine to gradually increase. After a period of time, the exhaust back pressure exceeds the limit value, the regeneration program needs to be started in time. [0003] The regeneration process is the process of removing particulate matter in the DPF, mainly heating regeneration method, water washing regeneration method, high-pressure air back blowing method, etc. In the heating regeneration method, the heating device generates an airflow with a temperature of about 400-600°C to oxidize and burn the accumulated particulate matter in the DPF. At present, only the heating regene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/025
CPCF01N3/025F01N2240/14
Inventor 黄育新李涛冯凯詹楚龙詹丽敏林泽华
Owner 黄育新
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