CN105964143A - Diesel engine tail gas treatment agent - Google Patents
Diesel engine tail gas treatment agent Download PDFInfo
- Publication number
- CN105964143A CN105964143A CN201610305196.4A CN201610305196A CN105964143A CN 105964143 A CN105964143 A CN 105964143A CN 201610305196 A CN201610305196 A CN 201610305196A CN 105964143 A CN105964143 A CN 105964143A
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- China
- Prior art keywords
- diesel engine
- vent gas
- inorganic agent
- parts
- engine vent
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a diesel engine tail gas treatment agent. The diesel engine tail gas treatment agent is prepared from the following raw materials in parts by weight: 30 to 40 parts of urea, 60 to 80 parts of high-purity water, 10 to 15 parts of low-carbon alcohol, 5 to 10 parts of an amide organic matter and 2 to 5 parts of cocamidopropyl betaine. The low-carbon alcohol comprises one of methanol, ethanol and propylene glycol. The amide organic matter comprises one of diacetamide, 2-methylpropanediamide and oxalic acid amide. The tail gas treatment agent disclosed by the invention has the advantages of low freezing point, lower cost, environmental friendliness, remarkable tail gas purification effect, good dispersity, capability of preventing an SCR (Semiconductor Control Rectifier) from blocking and the like; a preparation process is simple, the production efficiency is high, and industrial production is easy to realize, so that the diesel engine tail gas treatment agent has a very good market prospect.
Description
Technical field
The present invention relates to vehicle maintenance service technical field, specifically a kind of diesel engine vent gas inorganic agent.
Background technology
Air quality constantly declines in recent years, and haze is day by day serious, causes motor-vehicle tail-gas row in the reason of haze weather
Set level and be intended to account for about 20% to 25%.Whole nation motor vehicle emission pollutant has more than 5,700 ten thousand tons, every year including nitrogen oxygen at present
Compound, Hydrocarbon, carbon monoxide, particulate matter, the nitrogen oxides of wherein motor vehicle emission and particulate matter more than 85%, hydrocarbonization
Compound and carbon monoxide are more than 70%.Additionally, constitute about the automobile pollution heavy-duty diesel vehicle less than 20% to have discharged 60% left side
Right nitrogen oxides.Therefore, the improvement of vehicular emission becomes the most urgent task.
In diesel locomotive field, people have invented selective catalytic reduction (selective catalytic
Reduction), it is called for short SCR, goes to reduce the nitrogen oxides in diesel engine vent gas and microparticle.And use the method to carry out tail gas
The system processed is referred to as SCR system.SCR technology is to be sent out by the nitrogen oxides in urea for vehicle solution and diesel engine vent gas
Raw redox reaction eliminates the nitrogen oxides in tail gas.Urea for vehicle solution is also called diesel motor exhaust treatment fluid,
It is the high-purity transparent liquid that mass fraction be 32.5% formulated by high-purity urea crystal and ultra-pure deionized water, tool
There is light ammonia abnormal smells from the patient.
At present, the reducing agent freezing point of traditional diesel engine vent gas inorganic agent is all at about-11 DEG C, it means that use SCR
The vehicle of technology northwards can not run the Shanhai Pass winter, and today of this prosperity such for traffic is the most intolerable.Solve
Certainly conventional exhaust processes the in-problem method of reducing agent, is typically all in tradition reductant solution system additional anti-icing fluid circulation
Heating or electrically heated system and heat-insulation system, i.e. add additional zero such as adding heat pipe circuit, temperature sensor, heat-insulation layer
Part, not only per car adds the cost of about 1200 yuan, too increases the complexity of system undoubtedly, and fault rate is high, additionally, winter
Needing idling of vehicle certain time during cycling start, after waiting the temperature of engine coolant to rise, circulation anti-freezing liquid melts
The shortcomings such as the carbamide frozen.Carbamide bad dispersibility, decomposition in the most existing vent gas treatment agent not exclusively, thus create a large amount of
Deposit, cause SCR system to block, thus cause automobile fuel consumption to increase, the vent gas treatment problem such as not exclusively.
Summary of the invention
The present invention provides a kind of diesel engine vent gas inorganic agent, this inorganic agent has that freezing point is low, cost is relatively low, environmental protection, tail gas
Clean-up effect is notable, good dispersion, can prevent the advantages such as SCR blocking.
In order to realize object above, the technical solution used in the present invention is as follows:
A kind of diesel engine vent gas inorganic agent, the raw material including following weight fraction forms: carbamide 30-40 part, high purity water 60-80
Part, low-carbon alcohols 10-15 part, amide-type Organic substance 5-10 part and cocamido propyl betaine 2-5 part.
Preferably, described carbamide should meet GB29518-2013 " Diesel engine NOx reducing agent carbamide is water-soluble
The index request of the special carbamide of AUS 32 in liquid (AUS 32) standard.
Preferably, the above diesel engine vent gas inorganic agent also includes ring amine 0.5-1.5 part.
Preferably, the above diesel engine vent gas inorganic agent also includes methyl tertiary butyl ether(MTBE) 1-2 part.
Preferably, the above diesel engine vent gas inorganic agent also includes petroleum ether 3-5 part.
Preferably, the one during the above low-carbon alcohols includes methanol, ethanol and propylene glycol.
Preferably, during the above amide-type Organic substance includes oxalamide, 2-methylmalonyl amine and oxalamic acid
One.
The preparation method of a kind of diesel engine vent gas inorganic agent, comprises the following steps:
(1) each raw material is weighed according to following weight portion: carbamide 30-40 part, high purity water 60-80 part, low-carbon alcohols 10-15 part, amide
Type organic 5-10 part and cocamido propyl betaine 2-5 part；
(2) carbamide is added in high purity water, under rotating speed is 300-500r/min, stirs 10-20min, obtains urea liquid；
(3) by carbamide through carrying out ion exchange according to the flow velocity that flow velocity is 6-10m3/h, pure urea liquid is obtained；
(4) more above-mentioned pure urea liquid is mixed homogeneously with low-carbon alcohols, amide-type Organic substance and cocamido propyl betaine,
I.e. can get urea for vehicle solution.
Compared with prior art, beneficial effects of the present invention:
1, the diesel engine vent gas inorganic agent of the present invention is that addition low-carbon alcohols and amide-type are organic in traditional urea for vehicle formula
Thing, can be greatly lowered the freezing point of product, freezing point up to-30 DEG C ~-40 DEG C, solve conventional urea winter inapplicable or make
Use troublesome problem.
2, the diesel engine vent gas inorganic agent that the present invention provides is to add cocamidopropyl propyl amide in tradition urea for vehicle formula
Beet alkali surface activator, can effectively solve the problems such as solution dispersion is poor, spray effect is poor, atomized drop skewness,
Can effectively prevent generation and the SCR system blocking of deposit simultaneously.
The advantages such as 3, diesel engine vent gas inorganic agent of the present invention also has that cost is relatively low, environmental protection, tail gas clean-up effect are notable, its
Preparation technology is simple, production efficiency is high, easily realize industrialized production, has good market prospect.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further described, but is not limited to protection scope of the present invention.
Embodiment 1
A kind of diesel engine vent gas inorganic agent, the raw material including following weight fraction forms: 30 parts of carbamide, high purity water 60 parts, methanol
12 parts, oxalamide 5 parts and cocamido propyl betaine 2 parts.
Preparation method, comprises the following steps:
(1) each raw material is weighed according to above weight portion；
(2) carbamide is added in high purity water, under rotating speed is 300r/min, stirs 20min, obtains urea liquid；
(3) by carbamide through carrying out ion exchange according to the flow velocity that flow velocity is 6m3/h, pure urea liquid is obtained；
(4) more above-mentioned pure urea liquid is mixed homogeneously with methanol, oxalamide and cocamido propyl betaine,
To urea for vehicle solution.
Embodiment 2
A kind of diesel engine vent gas inorganic agent, the raw material including following weight fraction forms: 35 parts of carbamide, high purity water 70 parts, ethanol
10 parts, 2-methylmalonyl amine 8 parts, cocamido propyl betaine 3 parts and ring amine 1 part.
Preparation method, comprises the following steps:
(1) each raw material is weighed according to above weight portion；
(2) carbamide is added in high purity water, under rotating speed is 350r/min, stirs 15min, obtains urea liquid；
(3) by carbamide through carrying out ion exchange according to the flow velocity that flow velocity is 8m3/h, pure urea liquid is obtained；
(4) again by above-mentioned pure urea liquid and ethanol, 2-methylmalonyl amine, cocamido propyl betaine and ring amine,
It is uniformly mixed, i.e. can get urea for vehicle solution.
Embodiment 3
A kind of diesel engine vent gas inorganic agent, the raw material including following weight fraction forms: 40 parts of carbamide, high purity water 80 parts, the third two
Alcohol 15 parts, oxalamic acid 10 parts, cocamido propyl betaine 5 parts and methyl tertiary butyl ether(MTBE) 1.5 parts.
Preparation method, comprises the following steps:
(1) each raw material is weighed according to above weight portion；
(2) carbamide is added in high purity water, under rotating speed is 500r/min, stirs 10min, obtains urea liquid；
(3) by carbamide through carrying out ion exchange according to the flow velocity that flow velocity is 10m3/h, pure urea liquid is obtained；
(4) again by above-mentioned pure urea liquid and propylene glycol, oxalamic acid, cocamido propyl betaine and methyl tertbutyl
Ether, is uniformly mixed, and i.e. can get urea for vehicle solution.
Embodiment 4
A kind of diesel engine vent gas inorganic agent, the raw material including following weight fraction forms: 35 parts of carbamide, high purity water 75 parts, ethanol
13 parts, 2-methylmalonyl amine 8 parts, cocamido propyl betaine 4 parts and petroleum ether 5 parts.
Preparation method, comprises the following steps:
(1) each raw material is weighed according to above weight portion；
(2) carbamide is added in high purity water, under rotating speed is 350r/min, stirs 20min, obtains urea liquid；
(3) by carbamide through carrying out ion exchange according to the flow velocity that flow velocity is 8m3/h, pure urea liquid is obtained；
(4) again by above-mentioned pure urea liquid and ethanol, 2-methylmalonyl amine, cocamido propyl betaine and petroleum ether,
It is uniformly mixed, i.e. can get urea for vehicle solution.
Embodiment 5
A kind of diesel engine vent gas inorganic agent, the raw material including following weight fraction forms: 30 parts of carbamide, high purity water 70 parts, ethanol
12 parts, oxalamic acid 6 parts, cocamido propyl betaine 3 parts, ring amine 2 parts and petroleum ether 4 parts.
Preparation method, comprises the following steps:
(1) each raw material is weighed according to above weight portion；
(2) carbamide is added in high purity water, under rotating speed is 500r/min, stirs 20min, obtains urea liquid；
(3) by carbamide through carrying out ion exchange according to the flow velocity that flow velocity is 10m3/h, pure urea liquid is obtained；
(4) again by above-mentioned pure urea liquid and ethanol, oxalamic acid, cocamido propyl betaine, ring amine and oil
Ether, is uniformly mixed, and i.e. can get urea for vehicle solution.
Embodiment 6
A kind of diesel engine vent gas inorganic agent, the raw material including following weight fraction forms: 35 parts of carbamide, high purity water 80 parts, ethanol
15 parts, oxalamide 5 parts, cocamido propyl betaine 3 parts, ring amine 0.5 part, methyl tertiary butyl ether(MTBE) 2 parts and petroleum ether 3
Part.
Preparation method, comprises the following steps:
(1) each raw material is weighed according to above weight portion；
(2) carbamide is added in high purity water, under rotating speed is 400r/min, stirs 15min, obtains urea liquid；
(3) by carbamide through carrying out ion exchange according to the flow velocity that flow velocity is 8m3/h, pure urea liquid is obtained；
(4) again by above-mentioned pure urea liquid and ethanol, oxalamide, cocamido propyl betaine, ring amine, methyl-tert fourth
Base ether and petroleum ether, be uniformly mixed, and i.e. can get urea for vehicle solution.
Claims (7)
1. a diesel engine vent gas inorganic agent, it is characterised in that: include that the raw material of following weight fraction forms:
Carbamide 30-40 part, high purity water 60-80 part, low-carbon alcohols 10-15 part, amide-type Organic substance 5-10 part and cocamidopropyl propyl amide
Glycine betaine 2-5 part.
Diesel engine vent gas inorganic agent the most according to claim 1, it is characterised in that: described diesel engine vent gas inorganic agent also includes
Ring amine 0.5-1.5 part.
Diesel engine vent gas inorganic agent the most according to claim 1, it is characterised in that: described diesel engine vent gas inorganic agent also includes
Methyl tertiary butyl ether(MTBE) 1-2 part.
Diesel engine vent gas inorganic agent the most according to claim 1, it is characterised in that: described diesel engine vent gas inorganic agent also includes
Petroleum ether 3-5 part.
Diesel engine vent gas inorganic agent the most according to claim 1, it is characterised in that: described low-carbon alcohols include methanol, ethanol and
One in propylene glycol.
Diesel engine vent gas inorganic agent the most according to claim 1, it is characterised in that: described amide-type Organic substance includes oxalyl
One in amine, 2-methylmalonyl amine and oxalamic acid.
The preparation method of diesel engine vent gas inorganic agent the most according to claim 1, it is characterised in that: comprise the following steps:
(1) each raw material is weighed according to following weight portion: carbamide 30-40 part, high purity water 60-80 part, low-carbon alcohols 10-15 part, amide
Type organic 5-10 part and cocamido propyl betaine 2-5 part；
(2) carbamide is added in high purity water, under rotating speed is 300-500r/min, stirs 10-20min, obtains urea liquid；
(3) by carbamide through carrying out ion exchange according to the flow velocity that flow velocity is 6-10m3/h, pure urea liquid is obtained；
(4) more above-mentioned pure urea liquid is mixed homogeneously with low-carbon alcohols, amide-type Organic substance and cocamido propyl betaine,
I.e. can get urea for vehicle solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305196.4A CN105964143A (en) | 2016-05-10 | 2016-05-10 | Diesel engine tail gas treatment agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305196.4A CN105964143A (en) | 2016-05-10 | 2016-05-10 | Diesel engine tail gas treatment agent |
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| Publication Number | Publication Date |
|---|---|
| CN105964143A true CN105964143A (en) | 2016-09-28 |
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ID=56992265
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610305196.4A Pending CN105964143A (en) | 2016-05-10 | 2016-05-10 | Diesel engine tail gas treatment agent |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178408A (en) * | 2017-06-02 | 2017-09-19 | 许昌学院 | A kind of ultralow temperature diesel vehicle urea liquid and preparation method 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 |
| CN111939739A (en) * | 2020-08-24 | 2020-11-17 | 山东欧蓝素汽车环保科技有限公司 | Low-temperature applicable automobile urea solution and preparation method thereof |
| FR3108607A1 (en) * | 2020-03-30 | 2021-10-01 | Total Marketing Services | Composition for the depollution of exhaust gases from heat engines |
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|---|---|---|---|---|
| JPS52116775A (en) * | 1976-03-26 | 1977-09-30 | Hitachi Ltd | Decreasing nitrogen oxides in combustion exhaust gas |
| CN102213124A (en) * | 2011-05-24 | 2011-10-12 | 辽宁润迪精细化工有限公司 | Ultralow-temperature urea reducing agent composition |
| CN104533577A (en) * | 2015-01-13 | 2015-04-22 | 四川美丰化工股份有限公司 | Nitric oxide reducing agent with ultra-low freezing point and manufacturing method thereof |
| CN105032172A (en) * | 2014-11-17 | 2015-11-11 | 刘德龙 | High-efficient cleaning and maintenance liquid of diesel engine SCR system |
| CN105498537A (en) * | 2015-11-30 | 2016-04-20 | 许昌学院 | Low-temperature diesel exhaust reducing agent and preparation method thereof |
-
2016
- 2016-05-10 CN CN201610305196.4A patent/CN105964143A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52116775A (en) * | 1976-03-26 | 1977-09-30 | Hitachi Ltd | Decreasing nitrogen oxides in combustion exhaust gas |
| CN102213124A (en) * | 2011-05-24 | 2011-10-12 | 辽宁润迪精细化工有限公司 | Ultralow-temperature urea reducing agent composition |
| CN105032172A (en) * | 2014-11-17 | 2015-11-11 | 刘德龙 | High-efficient cleaning and maintenance liquid of diesel engine SCR system |
| CN104533577A (en) * | 2015-01-13 | 2015-04-22 | 四川美丰化工股份有限公司 | Nitric oxide reducing agent with ultra-low freezing point and manufacturing method thereof |
| CN105498537A (en) * | 2015-11-30 | 2016-04-20 | 许昌学院 | Low-temperature diesel exhaust reducing agent and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178408A (en) * | 2017-06-02 | 2017-09-19 | 许昌学院 | A kind of ultralow temperature diesel vehicle urea liquid and preparation method 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 |
| FR3108607A1 (en) * | 2020-03-30 | 2021-10-01 | Total Marketing Services | Composition for the depollution of exhaust gases from heat engines |
| CN111939739A (en) * | 2020-08-24 | 2020-11-17 | 山东欧蓝素汽车环保科技有限公司 | Low-temperature applicable automobile urea solution and preparation method thereof |
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Application publication date: 20160928 |