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Method of minimisation of PAH emissions using particle filters and filter thereof

A particle filter and exhaust gas emission technology, which is applied in the direction of dispersed particle filtration, chemical instruments and methods, separation methods, etc., can solve the problems of PAK combustion temperature cannot be reached, poor filtration effect, etc., and achieve the effect of reducing PAK emissions

Inactive Publication Date: 2011-06-15
GM GLOBAL TECH OPERATIONS LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0019] The danger here is that, in addition to some other mixtures (such as soluble organic matter SOF), the PAK is firstly desorbed by the carbon black particles and is discharged from the exhaust system together with the exhaust gas flow, because the combustion temperature of the PAK cannot be reached from the beginning.
So poor filtration in effectively filtering out health-threatening substances

Method used

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  • Method of minimisation of PAH emissions using particle filters and filter thereof
  • Method of minimisation of PAH emissions using particle filters and filter thereof

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Embodiment Construction

[0044] The diesel particulate filter 1a according to FIG. 1 for carrying out the method according to the invention has an adsorption layer 4 on the exhaust gas 2 inflow side, whereas an oxidation coating 5 is provided on the exhaust gas 3 outflow side of the diesel particulate filter 1a. All exhaust gases therefore flow first through the adsorption layer 4 and then through the oxidation coating 5 of the diesel particulate filter 1a.

[0045] According to FIG. 2, the diesel particulate filter 1b is equipped with a composite coating which is arranged between the incoming exhaust gas 2 and the outgoing exhaust gas 3 and which combines the adsorption layer 4' and the oxidation coating 5'.

[0046] According to Fig. 3 on the diesel particulate filter 1c, according to a kind of prescribed arrangement along the longitudinal dimension of the diesel particulate filter 1c, apply the coating according to the present invention, from the aspect of flowing into the exhaust gas 2, set the ads...

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Abstract

According to the invention, the emission of polycyclic aromatic hydrocarbons (PAH) from the exhaust-gas system of diesel motors with particle filters can be minimised or prevented. During the regeneration of the particle filter (1a; 1b; 1c), the polycyclic aromatic hydrocarbons (PAH) are first fixed in adsorption layers (4; 4'; 4'') and are cracked there at high temperatures. The cracking products are then preferably eliminated in an oxidation step.

Description

technical field [0001] The invention relates to a method for minimizing or avoiding possible emissions of polycyclic aromatic hydrocarbons PAK (PAK=Polyzyklische aromatische Kohlenwasserstoffe) from a particulate filter when regenerating the particulate filter, or what is required therefor Lubrication measures and catalyst arrangements suitable for carrying out the method. Background technique [0002] Diesel engines with low fuel consumption help reduce CO 2 Emission vehicle powerplants are indispensable today and will probably have a significant market share (>60%) in Europe in the future. However, its high nitrogen oxide and soot emission due to its operating principle is a disadvantage, which can only be counteracted by expensive exhaust gas aftertreatment in addition to measures taken on the engine. In this regard, in recent years, the development of NO removal X De-NO X systems and particulate filtration systems, and some have been used in batch production. How...

Claims

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Application Information

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IPC IPC(8): F01N3/035B01D46/24B01D46/00F01N3/023F01N3/08
CPCF01N2510/0684F01N3/035B01D2255/50B01D46/0036B01D2258/012B01D46/0063F01N2370/24F01N3/0835F01N3/0821F01N2510/0682B01D2257/7027F01N3/106B01D46/84F01N3/023F01N3/021
Inventor 罗曼·贝坎罗尼·莫尼格彼得·齐马
Owner GM GLOBAL TECH OPERATIONS LLC
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