CN105032172A - High-efficient cleaning and maintenance liquid of diesel engine SCR system - Google Patents
High-efficient cleaning and maintenance liquid of diesel engine SCR system Download PDFInfo
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- CN105032172A CN105032172A CN201410651981.6A CN201410651981A CN105032172A CN 105032172 A CN105032172 A CN 105032172A CN 201410651981 A CN201410651981 A CN 201410651981A CN 105032172 A CN105032172 A CN 105032172A
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Abstract
The invention provides a high-efficient cleaning and maintenance liquid of a diesel engine SCR system. The high-efficient cleaning and maintenance liquid includes the following components: a complexing agent, a surfactant, a cosolvent, ammonia water and the balanced being urea. The high-efficient cleaning and maintenance liquid can prolong the service life of a catalyst, can improve the effect of the catalyst in the SCR system, can improve the efficiency of tail gas treatment and can reduce the use cost of vehicle-use urea.
Description
Technical field
The present invention relates to a kind of SCR system of diesel engine high-efficiency washing conditioning liquid.
Background technology
Following problem is there will be in vehicle maintenance service liquid Long-Time Service process:
1. contain a small amount of metal ion in urea liquid, the regular period is used to cause catalyst poisoning to lose efficacy gradually, (SCR is the abbreviation of SelectiveCatalyticReduction finally to cause SCR system, for selective catalytic reduction converter, refer to that urea-spray controls reaction system) effectively can not process vehicle exhaust;
2. urea is when high temperature more than 200 DEG C, polymerization occurs and produces the sticky water-fast poly cyanamid of shape, be attached on nozzle, cause spray nozzle clogging;
3.SCR system work process, when nozzle is opened and sprayed urea liquid, has vehicle exhaust recoil in nozzle, produces the particular pollutant such as carbon distribution, and long term accumulation will make nozzle cannot return, finally cause return spring to damage, and cause spray nozzle clogging;
During 4.SCR system works, when nozzle is opened and sprayed urea liquid, because temperature is too high, cause phosphate in urea liquid, carbonate and calcium, magnesium plasma generation chemical reaction produces the water-fast incrustation such as calcium carbonate, calcium phosphate, cause spray nozzle clogging;
5. can only split out after spray nozzle clogging and clean, not only bother very much, sometimes also can clean and must change, cause the economic loss of user.
6., in arctic weather, common urea liquid is not antifreeze, and freezing point is too high.
Summary of the invention
The object of this invention is to provide a kind of SCR system of diesel engine high-efficiency washing conditioning liquid, it can solve above-mentioned shortcoming of the prior art.
The present invention is by the following technical solutions:
A kind of SCR system of diesel engine high-efficiency washing conditioning liquid, comprise following various component: complexing agent, surfactant, cosolvent, ammoniacal liquor, surplus is urea.
Described complexing agent is ethylenediamine tetra-acetic acid, ethylene glycol bis (2-amino-ethyl) tetraacethyl, ethylene diamine tetra methylene phosphonic acid sodium, ATMP, HEDP, ethylene diamine tetra methylene phosphonic acid sodium, ethylene diamine tetra methylene phosphonic acid, diethylene triamine pentamethylene phosphonic, 2-phosphonobutane-1; 2; a kind of and combination in 4-tricarboxylic acids, 2-HPAA, hexapotassium, polyamino polyether base methylenephosphonic acid, two 1,6 hexamethylene triamine five methylenephosphonic acids, ATMP and HEDP.
Described complexing agent is the mixture of ethylenediamine tetra-acetic acid and ethylene glycol bis (2-amino-ethyl) tetraacethyl, and and mass ratio be 1:1.
Described surfactant be dodecyl sodium sulfate, stearic acid, neopelex, quaternary ammonium compound, lecithin, amino acid, betaine, fatty glyceride and aliphatic acid sorb smooth in one or its combination.
Described cosolvent is fatty alcohol.
Described cosolvent is the mixture of butantriol and glycerine, and and mass ratio be 1:1.
Also comprise dirt dispersion agent, and described dirt dispersion agent is one in HPMA, polyepoxy sodium succinate, poly (sodium aspartate), polyacrylate, copolymer of phosphono carboxylic acid, polyacrylic acid, Sodium Polyacrylate, maleic acid-acrylic acid copolymer, acrylic acid-acrylic acid hydroxypropyl acrylate copolymer, acrylic acid-sulfonate-amide groups copolymer, acrylic acid-acrylic ester-phosphonic acids-sulfonate quadripolymer, acrylic acid-acrylic ester-sulfonate terpolymer and carboxylate-sulfonate-acrylate terpolymer or its combination.
Advantage of the present invention is:
1. the service life of extending catalyst.
The effect of Enhanced SC R system catalyst, improves vent gas treatment efficiency, the service life of extending catalyst;
2. reduce urea for vehicle use cost.
Improve the atomization efficiency of nozzle, effectively utilize urea for vehicle, and effectively can improve the interaction with diesel engine vent gas, make exhaust emissions up to standard.
3. maintenance urea pump, extends the life cycle of urea pump.
4. there is the nozzle of blocking in dredging.
Promote that insoluble substance dissolves, do not need machine of tearing open to dredge to have occurred the nozzle blocked.
5. reduce urea for vehicle freezing point of solution, play antifreeze effect.
Detailed description of the invention
Below in conjunction with setting forth the specific embodiment of the present invention further:
A kind of SCR system of diesel engine high-efficiency washing conditioning liquid, comprise following various component: complexing agent, surfactant, cosolvent, ammoniacal liquor, surplus is urea.
Described complexing agent is ethylenediamine tetra-acetic acid, ethylene glycol bis (2-amino-ethyl) tetraacethyl, ethylene diamine tetra methylene phosphonic acid sodium, ATMP, HEDP, ethylene diamine tetra methylene phosphonic acid sodium, ethylene diamine tetra methylene phosphonic acid, diethylene triamine pentamethylene phosphonic, 2-phosphonobutane-1; 2; a kind of and combination in 4-tricarboxylic acids, 2-HPAA, hexapotassium, polyamino polyether base methylenephosphonic acid, two 1,6 hexamethylene triamine five methylenephosphonic acids, ATMP and HEDP.
Described complexing agent is the mixture of ethylenediamine tetra-acetic acid and ethylene glycol bis (2-amino-ethyl) tetraacethyl, and and mass ratio be 1:1.
Described surfactant be dodecyl sodium sulfate, stearic acid, neopelex, quaternary ammonium compound, lecithin, amino acid, betaine, fatty glyceride and aliphatic acid sorb smooth in one or its combination.
Described cosolvent is fatty alcohol.Described cosolvent is the mixture of butantriol and glycerine, and and mass ratio be 1:1.
The present invention also comprises dirt dispersion agent, and described dirt dispersion agent is one in HPMA, polyepoxy sodium succinate, poly (sodium aspartate), polyacrylate, copolymer of phosphono carboxylic acid, polyacrylic acid, Sodium Polyacrylate, maleic acid-acrylic acid copolymer, acrylic acid-acrylic acid hydroxypropyl acrylate copolymer, acrylic acid-sulfonate-amide groups copolymer, acrylic acid-acrylic ester-phosphonic acids-sulfonate quadripolymer, acrylic acid-acrylic ester-sulfonate terpolymer and carboxylate-sulfonate-acrylate terpolymer or its combination.
Embodiment 1
Ethylenediamine tetra-acetic acid (EDTA) 1%;
Ethylene glycol bis (2-amino-ethyl) tetraacethyl (EGTA) 1%;
HPMA (HPMA) 0.05%;
Ethylene diamine tetra methylene phosphonic acid sodium (EDTMPS) 0.01%;
Dodecyl sodium sulfate (SDS) 0.1%;
Butanols 10%;
Glycerine 10%;
Ammoniacal liquor 1%;
Urea 76.84%.
Embodiment 2
Ethylenediamine tetra-acetic acid (EDTA) 10%;
Ethylene glycol bis (2-amino-ethyl) tetraacethyl (EGTA) 10%;
HPMA (HPMA) 0.2%;
Ethylene diamine tetra methylene phosphonic acid sodium (EDTMPS) 0.1%;
Dodecyl sodium sulfate (SDS) 2%;
Butanols 30%;
Glycerine 30%;
Ammoniacal liquor 5%;
Urea 12.7%.
Embodiment 3
Ethylenediamine tetra-acetic acid (EDTA) 5%;
Ethylene glycol bis (2-amino-ethyl) tetraacethyl (EGTA) 5%;
HPMA (HPMA) 0.14%;
Ethylene diamine tetra methylene phosphonic acid sodium (EDTMPS) 0.06%;
Dodecyl sodium sulfate (SDS) 1.5%;
Butanols 20%;
Glycerine 20%;
Ammoniacal liquor 3%;
Urea 78%.
Embodiment 4
Ethylenediamine tetra-acetic acid (EDTA) 0.1%;
Ethylene glycol bis (2-amino-ethyl) tetraacethyl (EGTA) 0.1%;
Dodecyl sodium sulfate (SDS) 0.01%;
Butanols 1%;
Glycerine 2%;
Ammoniacal liquor 96.69%;
Embodiment 5
Ethylenediamine tetra-acetic acid (EDTA) 1%;
Ethylene glycol bis (2-amino-ethyl) tetraacethyl (EGTA) 1%;
Dodecyl sodium sulfate (SDS) 0.1%;
Butanols 3%;
Glycerine 3%;
Ammoniacal liquor 1%;
Urea 90.9%.
Embodiment 6
Ethylenediamine tetra-acetic acid (EDTA) 0.5%;
Ethylene glycol bis (2-amino-ethyl) tetraacethyl (EGTA) 0.5%;
Dodecyl sodium sulfate (SDS) 0.05%;
Butanols 2%;
Glycerine 2.5%;
Ammoniacal liquor 0.5%;
Urea 93.95%.
Can be added directly to according to a certain percentage in common urea for vehicle in embodiment 1 to 3 and use, can promote that insoluble substance dissolves, not need machine of tearing open to dredge to have occurred the nozzle blocked; And can clean, regenerated catalyst, the useful life of extending catalyst.Embodiment 4 to 6 directly can replace common urea for vehicle Long-Time Service (filling a prescription as follows).Can reach and improve urea for vehicle service efficiency, maintenance urea pump, prevents SCR system shower nozzle from blocking, prevents catalyst poisoning, the service life of prolonging nozzle and catalyst.
Advantage of the present invention is:
1. the service life of extending catalyst.
The effect of Enhanced SC R system catalyst, improves vent gas treatment efficiency, the service life of extending catalyst;
2. reduce urea for vehicle use cost.
Improve the atomization efficiency of nozzle, effectively utilize urea for vehicle, and effectively can improve the interaction with diesel engine vent gas, make exhaust emissions up to standard.
3. maintenance urea pump, extends the life cycle of urea pump.
4. there is the nozzle of blocking in dredging.
Promote that insoluble substance dissolves, do not need machine of tearing open to dredge to have occurred the nozzle blocked.
5. reduce urea for vehicle freezing point of solution, play antifreeze effect.
The present invention adds the complexing agent blocking-up metal ion such as calcium, magnesium and phosphate, carbonate etc. form non-solubility material, prevents SCR system spray nozzle clogging; Stable water soluble complex can be formed with metal ion according to complexing agent, use the trace metal ion in complexing agent chelating urea for vehicle solution, eliminate the SCR system catalyst poisoning that causes of micro heavy, improve diesel engine vent gas treatment effeciency, extending catalyst service life; Add dirt dispersion agent, stop into dirt and interparticlely contact with each other and condense, thus the growth of dirt can be stoped, prevent SCR system spray nozzle clogging, extending catalyst service life; Add surfactant, play solubilising, dispersion, washing.Contribute to the removing of the dirt such as carbon distribution on SCR system nozzle and catalyst.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a SCR system of diesel engine high-efficiency washing conditioning liquid, is characterized in that, comprises following various component: complexing agent, surfactant, cosolvent, ammoniacal liquor, and surplus is urea.
2. SCR system of diesel engine high-efficiency washing conditioning liquid according to claim 1, it is characterized in that, described complexing agent is ethylenediamine tetra-acetic acid, ethylene glycol bis (2-amino-ethyl) tetraacethyl, ethylene diamine tetra methylene phosphonic acid sodium, ATMP, HEDP, ethylene diamine tetra methylene phosphonic acid sodium, ethylene diamine tetra methylene phosphonic acid, diethylene triamine pentamethylene phosphonic, 2-phosphonobutane-1, 2, 4-tricarboxylic acids, 2-HPAA, hexapotassium, polyamino polyether base methylenephosphonic acid, two 1, 6 hexamethylene triamine five methylenephosphonic acids, a kind of and combination in ATMP and HEDP.
3. SCR system of diesel engine high-efficiency washing conditioning liquid according to claim 1, is characterized in that, described complexing agent is the mixture of ethylenediamine tetra-acetic acid and ethylene glycol bis (2-amino-ethyl) tetraacethyl, and and mass ratio be 1:1.
4. SCR system of diesel engine high-efficiency washing conditioning liquid according to claim 1, it is characterized in that, described surfactant be dodecyl sodium sulfate, stearic acid, neopelex, quaternary ammonium compound, lecithin, amino acid, betaine, fatty glyceride and aliphatic acid sorb smooth in one or its combination.
5. SCR system of diesel engine high-efficiency washing conditioning liquid according to claim 1, is characterized in that, described cosolvent is fatty alcohol.
6. SCR system of diesel engine high-efficiency washing conditioning liquid according to claim 5, is characterized in that, described cosolvent is the mixture of butantriol and glycerine, and and mass ratio be 1:1.
7. SCR system of diesel engine high-efficiency washing conditioning liquid as claimed in any of claims 1 to 6, it is characterized in that, also comprise dirt dispersion agent, and described dirt dispersion agent is HPMA, polyepoxy sodium succinate, poly (sodium aspartate), polyacrylate, copolymer of phosphono carboxylic acid, polyacrylic acid, Sodium Polyacrylate, maleic acid-acrylic acid copolymer, acrylic acid-acrylic acid hydroxypropyl acrylate copolymer, acrylic acid-sulfonate-amide groups copolymer, acrylic acid-acrylic ester-phosphonic acids-sulfonate quadripolymer, one in acrylic acid-acrylic ester-sulfonate terpolymer and carboxylate-sulfonate-acrylate terpolymer or its combination.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921013A (en) * | 2016-05-10 | 2016-09-07 | 南宁市夏阳化工科技有限责任公司 | Adblue solution with lubricating and anti-freezing functions |
| CN105964143A (en) * | 2016-05-10 | 2016-09-28 | 南宁市夏阳化工科技有限责任公司 | Diesel engine tail gas treatment agent |
| CN107267970A (en) * | 2017-07-09 | 2017-10-20 | 无锡市福吉电子科技有限公司 | A kind of steelwork aqueous, environmental protective antirust agent and its preparation method and application |
| CN107488524A (en) * | 2017-08-09 | 2017-12-19 | 山西太钢不锈钢股份有限公司 | Generating set air cooler surface clean medicament |
| CN107716486A (en) * | 2017-09-30 | 2018-02-23 | 河南省农业科学院农业质量标准与检测技术研究所 | A kind of ultra-clean cleaning device of acidproof alkaline boiling and its cleaning fluid |
| CN108367238A (en) * | 2015-11-13 | 2018-08-03 | Ifp新能源公司 | For the fluid of progress contamination control in Thermal Motor and the method for preparing the fluid by producing homogeneous phase solution |
| CN110433657A (en) * | 2019-07-06 | 2019-11-12 | 新三和石化(福建)股份公司 | A kind of diesel engine vent gas minimum discharge liquid and preparation method thereof |
| CN111686582A (en) * | 2020-05-11 | 2020-09-22 | 江苏龙蟠科技股份有限公司 | Anti-scaling urea solution for vehicles and preparation method thereof |
| CN112226285A (en) * | 2020-10-14 | 2021-01-15 | 山东新蓝环保科技有限公司 | Cleaning agent for sediments of SCR (selective catalytic reduction) aftertreatment system of diesel vehicle |
| CN113117411A (en) * | 2021-04-02 | 2021-07-16 | 溢通环保科技（莆田）有限公司 | Suspended matter inhibition process for diesel oil tail gas treatment liquid |
| CN113230842A (en) * | 2021-04-02 | 2021-08-10 | 溢通环保科技（莆田）有限公司 | Suspended matter control and treatment system for diesel oil tail gas treatment liquid |
| WO2021198094A1 (en) * | 2020-03-30 | 2021-10-07 | IFP Energies Nouvelles | Iron-based homogeneous fluid for pollutant removal from heat engines |
| WO2021198095A1 (en) * | 2020-03-30 | 2021-10-07 | IFP Energies Nouvelles | Copper-based homogeneous fluid for pollutant removal from heat engines |
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| CN101905119A (en) * | 2010-08-20 | 2010-12-08 | 张家港市华昌药业有限公司 | Smoke denitrifier with scale inhibition function |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108367238A (en) * | 2015-11-13 | 2018-08-03 | Ifp新能源公司 | For the fluid of progress contamination control in Thermal Motor and the method for preparing the fluid by producing homogeneous phase solution |
| CN105921013A (en) * | 2016-05-10 | 2016-09-07 | 南宁市夏阳化工科技有限责任公司 | Adblue solution with lubricating and anti-freezing functions |
| CN105964143A (en) * | 2016-05-10 | 2016-09-28 | 南宁市夏阳化工科技有限责任公司 | Diesel engine tail gas treatment agent |
| CN107267970A (en) * | 2017-07-09 | 2017-10-20 | 无锡市福吉电子科技有限公司 | A kind of steelwork aqueous, environmental protective antirust agent and its preparation method and application |
| CN107488524A (en) * | 2017-08-09 | 2017-12-19 | 山西太钢不锈钢股份有限公司 | Generating set air cooler surface clean medicament |
| CN107716486A (en) * | 2017-09-30 | 2018-02-23 | 河南省农业科学院农业质量标准与检测技术研究所 | A kind of ultra-clean cleaning device of acidproof alkaline boiling and its cleaning fluid |
| CN107716486B (en) * | 2017-09-30 | 2023-06-23 | 河南省农业科学院农业质量标准与检测技术研究所 | Acid and alkali resistant stewing and ultra-clean cleaning device and cleaning fluid thereof |
| CN110433657A (en) * | 2019-07-06 | 2019-11-12 | 新三和石化(福建)股份公司 | A kind of diesel engine vent gas minimum discharge liquid and preparation method thereof |
| WO2021198095A1 (en) * | 2020-03-30 | 2021-10-07 | IFP Energies Nouvelles | Copper-based homogeneous fluid for pollutant removal from heat engines |
| WO2021198094A1 (en) * | 2020-03-30 | 2021-10-07 | IFP Energies Nouvelles | Iron-based homogeneous fluid for pollutant removal from heat engines |
| CN111686582A (en) * | 2020-05-11 | 2020-09-22 | 江苏龙蟠科技股份有限公司 | Anti-scaling urea solution for vehicles and preparation method thereof |
| CN112226285A (en) * | 2020-10-14 | 2021-01-15 | 山东新蓝环保科技有限公司 | Cleaning agent for sediments of SCR (selective catalytic reduction) aftertreatment system of diesel vehicle |
| CN113117411A (en) * | 2021-04-02 | 2021-07-16 | 溢通环保科技（莆田）有限公司 | Suspended matter inhibition process for diesel oil tail gas treatment liquid |
| CN113230842A (en) * | 2021-04-02 | 2021-08-10 | 溢通环保科技（莆田）有限公司 | Suspended matter control and treatment system for diesel oil tail gas treatment liquid |
| CN113117411B (en) * | 2021-04-02 | 2022-06-17 | 溢通环保科技（莆田）有限公司 | Suspended matter inhibition process for diesel oil tail gas treatment liquid |
| CN113230842B (en) * | 2021-04-02 | 2022-09-30 | 溢通环保科技（莆田）有限公司 | Suspended matter control and treatment system for diesel oil tail gas treatment liquid |
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