CN106745857A - A kind of water scrubber dirt dispersion agent and its application method - Google Patents
A kind of water scrubber dirt dispersion agent and its application method Download PDFInfo
- Publication number
- CN106745857A CN106745857A CN201611149591.4A CN201611149591A CN106745857A CN 106745857 A CN106745857 A CN 106745857A CN 201611149591 A CN201611149591 A CN 201611149591A CN 106745857 A CN106745857 A CN 106745857A
- Authority
- CN
- China
- Prior art keywords
- dirt dispersion
- dispersion agent
- agent
- water scrubber
- dispersant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
A kind of water scrubber dirt dispersion agent, be by percentage by weight be dispersant 1 5%, emulsifying agent 30 40%, bleeding agent 30 40% and remaining be that filtering is i.e. available after solvent is mixed 1 hour through normal temperature.Before the dirt dispersion agent decanting point is for washing column overhead circulating pump.The addition of the water scrubber dirt dispersion agent is 200ppm 500ppm, and is continuously injected into.The present invention is advantageous in that：The dirt dispersion agent can make in water scrubber and heat exchanger retains dirty thing and is greatly reduced, and water scrubber pressure difference is decreased obviously, and heat exchanger efficiency is substantially improved, and the cleaning frequency of heat exchanger can extend more than one times.
Description
First, technical field
The present invention relates to a kind of dirt dispersion agent, more particularly to a kind of water scrubber dirt dispersion agent and its application method.
2nd, background technology
The chilling stripping system of the MTO workshop sections system mainly includes chilling tower, water scrubber and Wastewater Stripping Tower, reaction system
The reaction gas for coming over is through over-quenching tower, water scrubber removing overheat and washing catalyst and will send downstream olefin after most of water condensation
Separator supplies separation and purification.Purified water comes from MTO device submarine discharge tower bottoms, the catalysis carried in chilled water (chw), washing water
Agent dust and a small amount of heavy oil are just inevitably present in purified water, cause the square saddle filler in water scrubber to block.
Material bias current in water scrubber, purified water largely smooth can not be flowed down, and fluid-tight is formed when serious, and fluid-tight reach a certain height and reacted
Gas takes washing column overhead to.Purified water can not be fully contacted the washing completed to oxide in product gas with product gas, make entrance
Oxide content rises in caustic wash tower product gas, and generating butter amount under the effect of caustic wash tower alkali increases.
Oily substance in reactor product gas is condensed in water system, and this part oily substance accounts for product gas total amount
0.3%, analysis result shows, most of in its component is aromatic hydrocarbons and long chain alkane, and wherein aromatic hydrocarbon substance accounts for 94.9%.Due to
The oil removing of former design cycle is limited in one's ability, causes oily substance to be accumulated in water system.Low-temperature space of the oily substance in water system
Solidification, causes water system tower, heat exchanger, air cooler to block.Major MTO devices have found that water system exchanges heat since go into operation successively
The oils that device, air cooler are solidified is blocked, and causes water system heat exchange efficiency to decline, and heat exchanger cleaning is frequent.Device washes water-cooled
But the heat exchanger such as device blocks speed quickly, and cleaning two times are about needed weekly.
According to measuring and calculating:Due to heat exchanger and flow meter from being blocked, alkene portion every three months just needs one month to reduce life
Load is produced to process the emergency situations that catalyst blockage is caused.It is annual carry out heat exchanger cleaning charge 2000~30,000,000 it
Between, while producing substantial amounts of waste water.
On this basis, the present invention have developed a kind of water scrubber dirt dispersion agent, by adding water scrubber dirt dispersion agent,
Water scrubber is interior and heat exchanger retains dirty thing and can be greatly reduced, and water scrubber pressure difference is decreased obviously, and heat exchanger efficiency is substantially improved, and changes
The cleaning frequency of hot device can extend more than one times.
3rd, the content of the invention
In order to overcome the weak point of existing dirt dispersion agent, the invention provides a kind of water scrubber dirt dispersion agent and its
Application method.
The technical proposal of the invention is realized in this way.
A kind of water scrubber dirt dispersion agent, be by percentage by weight be dispersant 1-5%, emulsifying agent 30-40%, bleeding agent
30-40% and remaining be that filtering is i.e. available after solvent is mixed 1 hour through normal temperature.
The dispersant is selected from polyethylene glycol 200, maleic anhydride, polymethacrylates-polyoxyethylene block copolymer
In one or several mixture；
The emulsifying agent is selected from has APES, polyoxyethylene sorbitan monooleate, lauryl alcohol to gather
One or several mixture in oxygen ethene ether phosphate (n=3), sorbitan monostearate；
The bleeding agent is selected from neopelex, lauryl sodium sulfate, laruyl alcohol, sodium lignin sulfonate, ten
One or several mixture in dialkyl group diglycollic amide；
The solvent is deionized water.
Before the dirt dispersion agent decanting point is for washing column overhead circulating pump.
The addition of the water scrubber dirt dispersion agent is 200ppm-500ppm, and is continuously injected into.
The present invention is advantageous in that：The dirt dispersion agent can make in water scrubber and heat exchanger retains dirty thing and significantly subtracts
Few, water scrubber pressure difference is decreased obviously, and heat exchanger efficiency is substantially improved, and the cleaning frequency of heat exchanger can extend more than one times.
4th, specific embodiment
Embodiment 1
By 4g polyethylene glycol 200s, 3g neopelexes, 30g Dodecyl Polyoxyethylene Ethers phosphate (n=3),
30g lauryl diethanolamides, 33g deionized waters are added in reactor, and dirt dispersion agent is filtrated to get after stirring at normal temperature 1h.
1) dispersion rate assay method：Take in 50ml distilled water addition beaker, add water scrubber dirt dispersion agent, put after shaking up
In 60 DEG C of water-baths, constant temperature 30min；The dirty thing for weighing 1g or so is put into above-mentioned solution, constant temperature stirring 30min.Do sky simultaneously
Plain boiled water sample contrast experiment.
The dispersion efficiency of water scrubber dirt dispersion agent is calculated according to formula below.
m0:Initial dirt amount of substance, g
m1：Plus dirty amount of substance, g after agent.
The dispersion effect table of 1 embodiment of table 1
| Plus dirty amount of substance (g) before agent | Plus dirty amount of substance (g) after agent | Dispersion rate | |
| Blank | 1.05 | 1.02 | 0.03% |
| Water scrubber dirt dispersion agent | 0.84 | 0.30 | 64.3% |
2) scale inhibition performance assay method：To a certain amount of dirt dispersion agent is added in washing water, stir；At 550nm
Measure the absorbance that measurement respectively adds washing water before and after agent.
By 5g ethylene glycol 200,40g has APES, 30g lauryl diethanolamides, 25g deionized waters
Add in reactor, dirt dispersion agent is filtrated to get after stirring at normal temperature 1h, dispersion experiment, dispersion efficiency are done with the dirt dispersion agent
It is 53.3%.
Embodiment 3
By 4g maleic anhydrides, 35g sorbitan monostearates, 35g sodium lignin sulfonates, 26g deionized waters add anti-
Answer in kettle, dirt dispersion agent is filtrated to get after stirring at normal temperature 1h, dispersion experiment is done with the dirt dispersion agent, dispersion efficiency is
62.4%.
Embodiment 4
5g maleic anhydrides, 40g polyoxyethylene sorbitan monooleates, 40g laruyl alcohols, 15g deionized waters are added
In reactor, dirt dispersion agent is filtrated to get after stirring at normal temperature 1h, dispersion experiment is done with the dirt dispersion agent, dispersion efficiency is
58.6%.
Embodiment 5
By 5g polymethacrylates-polyoxyethylene block copolymer, 30g Dodecyl Polyoxyethylene Ether phosphates (n=
3), 30g lauryl diethanolamides, 2g lauryl sodium sulfate, 33g deionized waters are added in reactor, stirring at normal temperature 1h
After be filtrated to get dirt dispersion agent, do dispersion experiment with the dirt dispersion agent, dispersion efficiency is 59.8%.
Embodiment 6
By 3g polymethacrylates-polyoxyethylene block copolymer, 40g Dodecyl Polyoxyethylene Ether phosphates (n=
3), 30g lauryl sodium sulfate, 27g water is added in reactor, and dirt dispersion agent is filtrated to get after stirring at normal temperature 1h, and this is hindered
Dirty application of dispersant does dispersion experiment in water scrubber with the dirt dispersion agent, and dispersion efficiency is 65.1%.
The dirt dispersion agent effect table of each embodiment of table 2
| Blank | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Dispersion rate % | 0.03 | 64.3 | 53.3 | 62.4 | 58.6 | 59.8 | 65.1 |
| Light transmittance | 0.78 | 0.92 | 0.88 | 0.90 | 0.85 | 0.87 | 0.94 |
Embodiments of the invention have been described in detail above, but the content is only presently preferred embodiments of the present invention,
It is not to be regarded as limiting practical range of the invention.All impartial changes made according to the present patent application scope and improvement etc.,
All should still belong within patent covering scope of the invention.
Claims (10)
1. a kind of water scrubber dirt dispersion agent, it is characterised in that：The dirt dispersion agent be by percentage by weight be dispersant 1-
5%th, filtering is after emulsifying agent 30-40%, bleeding agent 30-40% and the material normal temperature that remaining is solvent are mixed 1 hour
It is available.
2. a kind of water scrubber dirt dispersion agent according to claim 1, it is characterised in that：The dispersant is selected from poly- second two
One or several mixture in alcohol 200, maleic anhydride, polymethacrylates-polyoxyethylene block copolymer；
The emulsifying agent is selected from APES, polyoxyethylene sorbitan monooleate, lauryl alcohol polyoxy second
One or several mixture in alkene ether phosphate (n=3), sorbitan monostearate；
The bleeding agent is selected from neopelex, lauryl sodium sulfate, laruyl alcohol, sodium lignin sulfonate, dodecane
One or several mixture in base diglycollic amide；
The solvent is deionized water.
3. a kind of water scrubber dirt dispersion agent according to claim 1, it is characterised in that：The dirt dispersion agent is by weight
Amount percentage is the solvent of dispersant 4%, emulsifying agent 30%, bleeding agent 33% and 33% after normal temperature mixing 1 hour
Filtering is i.e. available.
4. a kind of water scrubber dirt dispersion agent according to claim 1, it is characterised in that：The dirt dispersion agent is by weight
Amount percentage is the solvent of dispersant 5%, emulsifying agent 40%, bleeding agent 30% and 25% after normal temperature mixing 1 hour
Filtering is i.e. available.
5. a kind of water scrubber dirt dispersion agent according to claim 1, it is characterised in that：The dirt dispersion agent is by weight
Amount percentage is the solvent of dispersant 4%, emulsifying agent 35%, bleeding agent 35% and 26% after normal temperature mixing 1 hour
Filtering is i.e. available.
6. a kind of water scrubber dirt dispersion agent according to claim 1, it is characterised in that：The dirt dispersion agent is by weight
Amount percentage is the solvent of dispersant 5%, emulsifying agent 40%, bleeding agent 40% and 15% after normal temperature mixing 1 hour
Filtering is i.e. available.
7. a kind of water scrubber dirt dispersion agent according to claim 1, it is characterised in that：The dirt dispersion agent is by weight
Amount percentage is the solvent of dispersant 3%, emulsifying agent 40%, bleeding agent 30% and 27% after normal temperature mixing 1 hour
Filtering is i.e. available.
8. a kind of water scrubber dirt dispersion agent according to claim 1, it is characterised in that：The dirt dispersion agent is by weight
Amount percentage is the solvent of dispersant 5%, emulsifying agent 30%, bleeding agent 32% and 33% after normal temperature mixing 1 hour
Filtering is i.e. available.
9. the application method of a kind of water scrubber dirt dispersion agent according to claim 1, it is characterised in that：The scale inhibition point
Before powder decanting point is for washing column overhead circulating pump.
10. the application method of water scrubber dirt dispersion agent according to claim 3, it is characterised in that the water scrubber resistance
The addition of dirty dispersant is 200ppm-500ppm, and is continuously injected into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149591.4A CN106745857B (en) | 2016-12-13 | 2016-12-13 | Scale inhibition and dispersion agent for water scrubbing tower and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149591.4A CN106745857B (en) | 2016-12-13 | 2016-12-13 | Scale inhibition and dispersion agent for water scrubbing tower and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106745857A true CN106745857A (en) | 2017-05-31 |
| CN106745857B CN106745857B (en) | 2020-10-02 |
Family
ID=58876945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611149591.4A Active CN106745857B (en) | 2016-12-13 | 2016-12-13 | Scale inhibition and dispersion agent for water scrubbing tower and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106745857B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143844A (en) * | 2018-02-12 | 2019-08-20 | 通用电气(Ge)贝克休斯有限责任公司 | Sediment monitoring of the methanol into olefin process |
| CN110270270A (en) * | 2019-07-02 | 2019-09-24 | 宜兴市中大凯水处理有限公司 | A kind of novel MTO water scrubber dispersing agent and preparation method thereof |
| CN110819470A (en) * | 2019-11-21 | 2020-02-21 | 天津市瑞德赛恩新材料开发有限公司 | Online cleaning agent for olefin separation water washing tower, preparation method and application thereof |
| CN111056898A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Heavy butter dispersing agent |
| CN111056900A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Dispersion agent for treating butter |
| CN111056899A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Dispersion pharmaceutical |
| CN112209798A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Butter inhibitor composition for methanol-to-olefin caustic tower and method for inhibiting butter generation |
| CN112209800A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Auxiliary agent composition for low-carbon olefin alkaline washing tower prepared from oxygen-containing compound and method for inhibiting butter generation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2134888A1 (en) * | 2007-03-29 | 2009-12-23 | Asa Spezialenzyme Gmbh | Method for the removal of corrosion layers |
| CN101817599A (en) * | 2010-01-25 | 2010-09-01 | 夏光甫 | Cleaning solution for descaling auto radiator and preparation method thereof |
| CN104403816A (en) * | 2014-12-06 | 2015-03-11 | 韦良富 | Automobile water tank cleaning fluid |
| CN104629927A (en) * | 2013-11-11 | 2015-05-20 | 中国石油化工股份有限公司 | Stripping cleaning agent composition and use method thereof |
-
2016
- 2016-12-13 CN CN201611149591.4A patent/CN106745857B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2134888A1 (en) * | 2007-03-29 | 2009-12-23 | Asa Spezialenzyme Gmbh | Method for the removal of corrosion layers |
| CN101817599A (en) * | 2010-01-25 | 2010-09-01 | 夏光甫 | Cleaning solution for descaling auto radiator and preparation method thereof |
| CN104629927A (en) * | 2013-11-11 | 2015-05-20 | 中国石油化工股份有限公司 | Stripping cleaning agent composition and use method thereof |
| CN104403816A (en) * | 2014-12-06 | 2015-03-11 | 韦良富 | Automobile water tank cleaning fluid |
Non-Patent Citations (8)
| Title |
|---|
| 万伟仁等: "《国内精细化工产品手册》", 31 August 1992 * |
| 中国洗涤用品工业协会: "《中国洗涤用品企业大全》", 31 January 2002 * |
| 发电厂热力设备化学清洗单位资质评定委员会: "《火电厂热力设备化学清洗培训教材》", 30 June 2007 * |
| 国工业表面活性剂生产技术协作组全国工业表面活性剂中心: "《2000工业表面活性剂技术经济文集》", 8 October 2000 * |
| 张玉龙等: "《水处理剂配方设计与实例》", 31 May 2011 * |
| 徐鸿华等: "《实用中草药图谱》", 30 June 2012 * |
| 王武钰: "《铁质文物脱盐清洗及封护研究》", 30 September 2008 * |
| 马兴元等: "《合成革化学与工艺学》", 30 November 2015 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143844B (en) * | 2018-02-12 | 2023-05-26 | 通用电气(Ge)贝克休斯有限责任公司 | Deposit control in methanol to olefins processes |
| CN110143844A (en) * | 2018-02-12 | 2019-08-20 | 通用电气(Ge)贝克休斯有限责任公司 | Sediment monitoring of the methanol into olefin process |
| CN111056899B (en) * | 2018-10-17 | 2022-08-12 | 中国石油化工股份有限公司 | Dispersion pharmaceutical |
| CN111056898A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Heavy butter dispersing agent |
| CN111056900A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Dispersion agent for treating butter |
| CN111056899A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Dispersion pharmaceutical |
| CN111056900B (en) * | 2018-10-17 | 2022-12-09 | 中国石油化工股份有限公司 | Dispersion agent for treating butter |
| CN111056898B (en) * | 2018-10-17 | 2022-08-12 | 中国石油化工股份有限公司 | Heavy butter dispersing agent |
| CN110270270A (en) * | 2019-07-02 | 2019-09-24 | 宜兴市中大凯水处理有限公司 | A kind of novel MTO water scrubber dispersing agent and preparation method thereof |
| CN112209798A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Butter inhibitor composition for methanol-to-olefin caustic tower and method for inhibiting butter generation |
| CN112209798B (en) * | 2019-07-10 | 2022-07-12 | 中国石油化工股份有限公司 | Butter inhibitor composition for methanol-to-olefin caustic tower and method for inhibiting butter generation |
| CN112209800B (en) * | 2019-07-10 | 2022-07-12 | 中国石油化工股份有限公司 | Auxiliary agent composition for low-carbon olefin alkaline washing tower prepared from oxygen-containing compound and method for inhibiting butter generation |
| CN112209800A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Auxiliary agent composition for low-carbon olefin alkaline washing tower prepared from oxygen-containing compound and method for inhibiting butter generation |
| CN110819470B (en) * | 2019-11-21 | 2021-07-09 | 天津市瑞德赛恩新材料开发有限公司 | Online cleaning agent for olefin separation water washing tower, preparation method and application thereof |
| CN110819470A (en) * | 2019-11-21 | 2020-02-21 | 天津市瑞德赛恩新材料开发有限公司 | Online cleaning agent for olefin separation water washing tower, preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106745857B (en) | 2020-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106745857A (en) | A kind of water scrubber dirt dispersion agent and its application method | |
| RU2635551C9 (en) | Method of ethylene oligomerization | |
| CN102826950B (en) | Process method for circularly utilizing waste water produced by butadiene preparation through butene oxidative dehydrogenation | |
| CN101423482B (en) | Integrated method of sulphonation and neutralization reaction | |
| CN101568580B (en) | Method for transferring heat to a liquid mixture comprising at least one acrylic monomer | |
| CN104263456B (en) | Multifunctional self-emulsifying ester and preparation method thereof | |
| CN110256476B (en) | Method for synthesizing 1,1,1,3,5,5, 5-heptamethyltrisiloxane by using hydrogen-containing silicone oil low-boiling-point substance | |
| WO2007018666A1 (en) | Improved loop reactor heat removal | |
| CN105273741B (en) | Ethylene device gasoline stripping tower scale inhibitor, preparation method and usage method | |
| CN110759801A (en) | Method for producing diisobutylene by mixing C4 | |
| CN105819578A (en) | Scale removing agent used for MTO (Methanol To Olefins) water scrubber | |
| CN105623735B (en) | A kind of method that Etherification of Light FCC Gasoline improves gasoline quality | |
| CN109790242A (en) | Solvent separation equipment and solvent fractionation method | |
| JP6912681B1 (en) | Method for producing secondary alcohol alkoxylate | |
| CN106381208A (en) | Preparation method of concentrate for hydraulic support | |
| CN105525303B (en) | A kind of metal cleaner | |
| CN105525300B (en) | A kind of water base metal cleaning agent | |
| JP2005247851A (en) | Method for producing tertiary carboxylic acid and its use | |
| CN109748773B (en) | Butene recovery process | |
| CN104877777A (en) | Water-based detergent and preparation method and application thereof | |
| CN102276430A (en) | Separation of glycol mono-tertiary-butyl ether and glycol di-tertiary-butyl ether | |
| CN100390139C (en) | Method for inhibiting polymerization during the recovery and purification of unsaturated mononitriles | |
| CN210698862U (en) | Isopropyl hydroxylamine rectification system of high yield | |
| CN106866446A (en) | Bio-based unsaturation medium chain acid amides water soluble surfactant active | |
| EP2351734A1 (en) | Process for producing sulfuric acid ester salt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |