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Device and method for controlling diesel exhaust particulate pollutants

A technology of tail gas particles and control devices, which is applied in the direction of exhaust devices, noise reduction devices, mechanical equipment, etc., can solve the problem of consuming extra cost of urea, and achieve the effect of avoiding the loss of sound energy, enhancing the effect, and thoroughly removing particles

Active Publication Date: 2018-07-06
SOUTHEAST UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the currently used method of reducing nitrogen oxide emissions with urea outside the machine combined with optimizing the combustion and emission reduction of particles inside the machine can meet the needs of particle emission reduction, but the additional cost caused by urea consumption and the additional urea reaction process are necessary to implement this method. Additional Additional Requirements for the Method

Method used

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  • Device and method for controlling diesel exhaust particulate pollutants
  • Device and method for controlling diesel exhaust particulate pollutants
  • Device and method for controlling diesel exhaust particulate pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0073] The working principle and process of the above-mentioned diesel engine exhaust particulate pollution control device are:

[0074] After the signal source generates a specific frequency signal, the speaker is driven by the power amplifier, which excites the air in the Helmholtz sound source to vibrate violently, and radiates sound waves synchronously from both ends of the array tube to each single tube through the through hole, and constructs a standing wave in the array tube The sound field forms a non-linear sound field.

[0075] After the exhaust gas of diesel engine is introduced into the array pipe, the suspended particles in the exhaust gas will move to the antinode / node of the standing wave sound field under the action of the nonlinear sound field, realizing the effect of directional movement of the suspended particles in space. Due to the accumulation of suspended particles at antinodes / nodes, a particle accumulation area with a large particle number concentratio...

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Abstract

The invention discloses a control device for particle pollutants of tail gas of a diesel engine and a method thereof. The device comprises a sound field generation device, a micro injection device, a particle storage chamber and porous cotton, wherein micro injection units forming parts of the micro injection device are positioned inside array pipes forming parts of the sound field generation device; the porous cotton is positioned inside the array pipes; the particle storage chamber wraps the outer parts of the array pipes; the sound field generation device comprises a Helmholtz sound source, the array pipes and isolation baffle plates; the Helmholtz sound source adopts a Helmholtz resonator structure; through holes are formed in the porous baffle plates in an N * M matrix arrangement manner, and N is 2 or above; and the array pipes comprise N * M same single pipes in an N * M matrix arrangement manner. The control device is an integrated gas suspended particle removal device, and can be utilized as a removal device for particles in the tail gas of the diesel engine.

Description

technical field [0001] The invention belongs to the technical field of gas suspended particle removal devices, and in particular relates to a diesel engine tail gas particle pollutant control device and a method thereof. Background technique [0002] The National Environmental Statistical Bulletin shows that in 2014, the national motor vehicle smoke and dust emissions were 574,000 tons, and in 2012, the particulate matter emissions were 622,000 tons. According to the "2013 China Motor Vehicle Pollution Prevention and Control Annual Report" issued by the Ministry of Environmental Protection, motor vehicle exhaust pollution has become an important source of air pollution in my country, and is an important cause of smog and photochemical smog pollution. Diesel engine is an important energy conversion system for people's production and life to obtain mechanical energy power source in social development. The diesel engine uses compressed air to quickly increase the temperature h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/02F01N3/022F01N3/04
CPCF01N3/02F01N3/022F01N3/04F01N2510/08
Inventor 乔正辉董卫黄亚继
Owner SOUTHEAST UNIV
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