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Diesel particulate filter ash cleaning solution and preparation method thereof

A particle trap and cleaning solution technology, which is applied in chemical instruments and methods, detergent compositions, detergent compounding agents, etc., can solve problems such as high maintenance costs, expensive equipment, and the size of the DPF cannot be too large

Active Publication Date: 2021-07-06
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of air purging and dust removal are as follows: (1) The dust removal effect is poor, which shortens the dust removal mileage of DPF; (2) The size of DPF cannot be too large, which is not suitable for medium and heavy commercial vehicles; (3) Preheating is required , not energy-saving; (4) The equipment is expensive and the maintenance cost is high

Method used

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  • Diesel particulate filter ash cleaning solution and preparation method thereof
  • Diesel particulate filter ash cleaning solution and preparation method thereof
  • Diesel particulate filter ash cleaning solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment provides a diesel particulate filter ash cleaning solution, which is composed of the following raw materials in parts by mass:

[0024]

[0025]

[0026] The preparation method of the above-mentioned diesel particulate filter ash cleaning solution comprises the following steps:

[0027] 1) Add surfactant additives, surfactants, ash scavenger, and water into the reactor and heat to 50°C according to the ratio of parts by mass;

[0028] 2) add chelating agent in reactor, and stir;

[0029] 3) Cool down to 20°C, add corrosion inhibitor, defoamer, and dispersant, and stir evenly.

[0030] The DPF was cleaned with the above-mentioned cleaning solution, and the DPF mass change rate before and after cleaning was used as an evaluation standard, and the DPF mass change rate before and after cleaning in Example 1 was 2.5%.

Embodiment 2

[0032] This embodiment provides a diesel particulate filter ash cleaning solution, which is composed of the following raw materials in parts by mass:

[0033]

[0034] The preparation method of the above-mentioned diesel particulate filter ash cleaning solution comprises the following steps:

[0035] 1) Add surfactant additives, surfactants, ash scavenger, and water into the reactor and heat to 70°C according to the ratio of parts by mass;

[0036] 2) add chelating agent in reactor, and stir;

[0037] 3) Cool down to 25°C, add corrosion inhibitor, defoamer, and dispersant, and stir evenly.

[0038] The above-mentioned cleaning solution was used to clean the DPF, and the DPF mass change rate before and after cleaning was used as the evaluation standard, and the DPF mass change rate before and after cleaning in Example 2 was 3.1%.

Embodiment 3

[0040] This embodiment provides a diesel particulate filter ash cleaning solution, which is composed of the following raw materials in parts by mass:

[0041]

[0042] The preparation method of the above-mentioned diesel particulate filter ash cleaning solution comprises the following steps:

[0043] 1) Add surfactant additives, surfactants, ash scavenger, and water into the reactor and heat to 60° C. according to the ratio of parts by mass;

[0044] 2) add chelating agent in reactor, and stir;

[0045] 3) Cool down to 25°C, add corrosion inhibitor, defoamer, and dispersant, and stir evenly.

[0046] The DPF was cleaned with the above-mentioned cleaning solution, and the DPF mass change rate before and after cleaning was used as the evaluation standard, and the DPF mass change rate before and after cleaning in Example 3 was 2.8%.

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Abstract

The invention discloses an ash cleaning liquid for a diesel particle trap and a preparation method thereof. The ash cleaning liquid is composed of the following raw materials in parts by mass: 1-10 parts of surfactant auxiliary agent, 5-15 parts of surfactant , 5-15 parts of ash scavenger, 1-10 parts of chelating agent, 0.05-0.15 part of corrosion inhibitor, 0.05-0.15 part of defoamer, 0.05-0.15 part of dispersant, and the balance is water. The cleaning solution provided by the present invention can quickly dissolve the metal oxides, sulfates, phosphates, silicates and chlorides in the DPF ash, make them react to form water-soluble compounds, which are taken away by the aqueous solution and discharged. The compounds formed are surface active and help dissolve and clean soot particles.

Description

technical field [0001] The invention relates to the technical field of dust cleaning of a particle trap of an exhaust emission device, in particular to an ash cleaning liquid of a diesel particle trap and a preparation method thereof. Background technique [0002] my country has officially entered the era of "National VI" emissions. In addition to stricter regulations on NOx and PM emissions, National VI also stipulates CO, HC, NH 3 At the same time, it also increases the monitoring of PM (particulate matter) emissions, which puts forward higher requirements for the exhaust gas treatment technology of the engine. The limit value of PM (particulate matter) in China VI is much stricter than that in China V. Through optimized calibration, intake and exhaust phase and other means, it is impossible to make the PM emission of the original machine meet the requirements of the regulations while satisfying the power performance. Therefore, only Solved by adding a particle filter (DP...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/83C11D3/20C11D3/36C11D3/33C11D3/30C11D3/37C11D3/28C11D3/22C11D3/16C11D3/60
CPCC11D1/008C11D1/146C11D1/22C11D1/66C11D1/72C11D1/722C11D1/83C11D1/8305C11D3/166C11D3/201C11D3/2044C11D3/2079C11D3/2086C11D3/228C11D3/28C11D3/30C11D3/33C11D3/361C11D3/3757C11D3/3765
Inventor 吴章辉姜杨赵鹏庞磊何大礼钟小华
Owner DONGFENG COMML VEHICLE CO LTD
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