CN102399603B - Composite multi-carbon alcohol cosolvent and preparation method thereof - Google Patents
Composite multi-carbon alcohol cosolvent and preparation method thereof Download PDFInfo
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- CN102399603B CN102399603B CN2010102814491A CN201010281449A CN102399603B CN 102399603 B CN102399603 B CN 102399603B CN 2010102814491 A CN2010102814491 A CN 2010102814491A CN 201010281449 A CN201010281449 A CN 201010281449A CN 102399603 B CN102399603 B CN 102399603B
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Abstract
The present invention discloses a composite multi-carbon alcohol cosolvent and a preparation method thereof. The composite multi-carbon alcohol cosolvent adopts offcuts from an ethanol production plant or a winery as raw materials, wherein the offcuts comprise 40-70% of ethanol, 5-15% of propanol and isopropanol, 5-15% of n-butanol, isobutanol and tert butyl alcohol, 1-5% of amyl alcohol, isoamyl alcohol, hexyl alcohol, heptanol, octanol, nonanol, decanol and other liquid multi-carbon alcohols, and 14-40% of water. With performing steps of the raw material pretreatment, pervaporation membrane dehydration, blending and the like, the composite multi-carbon alcohol cosolvent with the water content less than 0.5% is prepared. The composite multi-carbon alcohol cosolvent can be adopted as an alcohol oil cosolvent, and the assistant dissolution effect of the composite multi-carbon alcohol cosolvent is high. The composite multi-carbon alcohol cosolvent provides lower toxicity than the aromatic alcohol oil cosolvent, and provides lower corrosion than the acetone alcohol oil cosolvent. In the prior art, boiling points of the propanol, the isobutanol, the n-butanol and the like are close to the boiling point of the water, and the azeotrope effect is further generated, such that the dehydration is difficult to perform by the fractionation method. With the preparation method of the present invention, the disadvantage in the prior art is overcome. The production cost for the composite multi-carbon alcohol cosolvent is significantly lower than the production cost of the composite multi-carbon alcohol cosolvent produced by blending the corresponding monomer multi-carbon alcohol, and the assistant dissolution effect of the composite multi-carbon alcohol cosolvent is higher than the assistant dissolution effect of each monomer multi-carbon alcohol.
Description
Technical field
The present invention relates to a kind of composite multi-carbon alcohol cosolvent for hydro carbons and methyl alcohol, ethanol hydrotropy and preparation method thereof.
Background technology
The hydro carbons such as gasoline, diesel oil and the alcohols such as methyl alcohol, ethanol are mixed while being mixed, because amphipathic property energy difference is larger, usually can not dissolve each other and layering, and low temperature or while containing moisture, demixing phenomenon is more serious.Therefore, the alcohol oil solubility promoter of exploitation superior performance is very necessary.Although the solubility promoter that impels pure oil to dissolve each other is existing multiple, at it, impel pure oil the dissolve each other aspects such as effect and product cost and toxicity, corrodibility, ideal mostly not enough.For example, monomer multi-carbon alcohol cosolvent cost is higher and effect is poor, and the alcohol oil solubility promoter corrodibility of acetone and so on is larger, and the alcohol oil solubility promoter toxicity of aromatic hydrocarbons and so on is larger.
Summary of the invention
The present invention is intended to solve the problem that prior art exists, and the tankage that utilize alcohol production factory or distillery to contain moisture and many carbon fusel adopt advanced technologies, and a kind of composite multi-carbon alcohol cosolvent and preparation method thereof is provided.This solubility promoter is mixed and the Substitute For Partial petroleum products for methyl alcohol, ethanol and gasoline, diesel oil, has promoter action, and its preparation method is simple, safe and reliable.
The tankage that alcohol production factory or distillery contain liquid many carbon fusels such as moisture and ethanol, propyl alcohol, Virahol, propyl carbinol, isopropylcarbinol, the trimethyl carbinol, amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol, through the infiltrating and vaporizing membrane processed, obtain a kind of water content lower than 0.5% compound higher alcohols, through allotment, obtain various liquid higher alcoholses and occupy a certain proportion of composite multi-carbon alcohol cosolvent.
This composite multi-carbon alcohol cosolvent adopts in the tankage of alcohol production factory or distillery, contain by mass: ethanol 40 ~ 70%, propyl alcohol and Virahol 5 ~ 15%, propyl carbinol, isopropylcarbinol and the trimethyl carbinol 5 ~ 15%, amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol and decyl alcohol add up to 1 ~ 5%, and the liquid higher alcohols that moisture is 14 ~ 40% makes raw material, through steps such as pre-treatment, infiltrating and vaporizing membrane dehydration and allotments, thereby obtain a kind of water content lower than 0.5% composite multi-carbon alcohol cosolvent.This solubility promoter for by mass containing ethanol 45 ~ 70%, propyl alcohol and Virahol 10 ~ 20%, butanols and isomery alcohol 16 ~ 24% thereof, all the other 3 ~ 8% alcohol mixtures that are amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol and decyl alcohol composition.
This compound higher alcohols has efficient hydrotropy and the advantages such as low toxicity, low-corrosiveness for the hydro carbons such as gasoline, diesel oil and the alcohols such as methyl alcohol, ethanol, and cheap; The pure oily solubility promoter of acetone strong with solvability and so on is compared, and has overcome their severe corrosive; The aromatic hydrocarbons alcohol oily solubility promoter larger with toxicity compared, and avoided their toxicity.
The preparation method of composite multi-carbon alcohol cosolvent, its technological process comprises the pre-treatment of many carbon fusel tankage, infiltrating and vaporizing membrane dehydration and compound higher alcohols allotment etc.Concrete steps are as follows:
A, raw materials pretreatment, by in described alcohol production factory or distillery tankage, contain ethanol, propyl alcohol, Virahol, propyl carbinol, isopropylcarbinol, the trimethyl carbinol, amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol and decyl alcohol by the above quality, and the liquid higher alcohols tankage of water, by filtering or centrifugation, presumable solid particulate is removed in pre-treatment;
B, infiltrating and vaporizing membrane dehydration, infiltrating and vaporizing membrane dehydration institute employing specific equipment, by above-mentioned moisture many carbon fusel tankage feed liquid after interchanger is heated to 70 ~ 95 ℃, below 0.4Mpa pressure, sending into the film device by fresh feed pump contacts with film, moisture is absorbed and scattering and permeating by the fine and close compounding permeation vaporizing film selectivity of polymer atresia, film see through side by the 10mmHg vacuum vaporization, and then be condensed into liquid and be collected by-10 ℃ of brine condensers and remove;
Described specific equipment comprises head tank, strainer, fresh feed pump, interchanger, film device, vacuum pump, condenser, products pot, deviates from water pot, and connects with corresponding connecting pipeline;
Described interchanger thermal source is steam heating or electrically heated;
C, the allotment of compound higher alcohols, each component concentration of many carbon fusel after the dehydration of allotment infiltrating and vaporizing membrane, make it reach the specification of quality of composite multi-carbon alcohol cosolvent, by mass containing ethanol 45 ~ 70%, propyl alcohol and Virahol 10 ~ 20%, butanols and isomery alcohol 16 ~ 24% thereof, all the other 3 ~ 8% are amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol and decyl alcohol, moisture is below 0.5%, to guarantee the quality product of composite multi-carbon alcohol cosolvent.
The preparation method's of composite multi-carbon alcohol cosolvent beneficial effect, adopt the infiltrating and vaporizing membrane dewatering process to overcome the boiling points such as propyl alcohol, isopropylcarbinol, propyl carbinol with the boiling point of water, approach, azeotropic effect in addition, thereby be difficult to the shortcoming of dewatering with the fractionating process sequence of constant boiling and rectification.The compound higher alcohols that utilizes this preparation method to produce is as solubility promoter, for alcohols such as the hydro carbons of oleophylic and hydrophilic methyl alcohol, ethanol, has advantages of efficient hydrotropy and with low cost.
Embodiment
Below introduce in detail embodiments of the invention:
Embodiment 1:
Get 1 ton of the tankage that alcohol production factory contains the liquid higher alcoholses such as ethanol, propyl alcohol, Virahol, propyl carbinol, the trimethyl carbinol, amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol, moisture content 30.6% by mass, ethanol 47.4%, propyl alcohol and Virahol 8%, butanols and isomery alcohol 9% thereof, other 5% is amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol.The pH value of this feed liquid is 7.1.
By above-mentioned moisture many carbon fusel tankage by filtering separation, pre-treatment remove solid particulate 0.1kg(1 ton raw materials quality loss ten thousand/, during material balance, can ignore), carry out again the infiltrating and vaporizing membrane dehydration, the specific equipment that adopts Beijing Hongzhi Jiahe Science and Technology Co., Ltd. to provide, comprise head tank, strainer, fresh feed pump, interchanger, the film device, vacuum pump, condenser, products pot, deviate from water pot and corresponding connecting pipeline, moisture many carbon fusel tankage feed liquid is after the steam heating interchanger is heated to 85 ℃, below 0.4Mpa pressure, sending into the film device by fresh feed pump contacts with the fine and close compounding permeation vaporizing film of polymer atresia, moisture is absorbed by the fine and close compounding permeation vaporizing film selectivity of polymer atresia and scattering and permeating is crossed film, see through side by the 10mmHg vacuum vaporization at film, and then be condensed into liquid and be collected by-10 ℃ of brine condensers and remove, finally the material side at film obtains moisture 0.3% compound higher alcohols, another containing ethanol 68.2%, propyl alcohol and Virahol 11.5%, butanols and isomery alcohol 13.0% thereof, all the other 7.0% are amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol, and needn't allocate is qualified composite multi-carbon alcohol cosolvent product.
2400 yuan of the tankage that moisture and many carbon fusel are contained in alcohol production factory procurement prices per ton, obtain multi-carbon alcohol cosolvent 694kg after the infiltrating and vaporizing membrane dehydration, raw materials cost is 3458 yuan/tons of products, add other expenditure, the production cost expense is 4000 yuan/tons of products, and significantly, lower than the cost of general pure oily solubility promoter, hydrotropy effect but is better than general pure oily solubility promoter: for M15, this multi-carbon alcohol cosolvent addition 0.5% gets final product, lower than the consumption of general solubility promoter 3% left and right; For M85, this multi-carbon alcohol cosolvent addition 0.1% gets final product, lower than the consumption of general solubility promoter 1% left and right.Therefore, this product is a kind of efficient, high-quality, the cheap oily solubility promoter of compound higher alcohols alcohol.
Embodiment 2:
Get 1 ton of the tankage that distillery contains the liquid higher alcoholses such as ethanol, propyl alcohol, Virahol, propyl carbinol, the trimethyl carbinol, amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol, moisture content 20.4% by mass, ethanol 57.6%, propyl alcohol and Virahol 12.0%, butanols and isomery alcohol 8.0% thereof, other 2.0% is amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol etc.The pH value of this feed liquid is 7.3.By above-mentioned moisture many carbon fusel tankage by centrifugation, pre-treatment remove solid particulate 0.1kg(1 ton raw materials quality loss ten thousand/, during material balance, can ignore), carry out again the infiltrating and vaporizing membrane dehydration, the specific equipment that adopts Beijing Hongzhi Jiahe Science and Technology Co., Ltd. to provide, comprise head tank, strainer, fresh feed pump, interchanger, the film device, vacuum pump, condenser, products pot, deviate from water pot and corresponding connecting pipeline, moisture many carbon fusel tankage feed liquid is after the steaming electric heating heat exchanger is heated to 85 ℃, below 0.4Mpa pressure, sending into the film device by fresh feed pump contacts with the fine and close compounding permeation vaporizing film of polymer atresia, moisture is absorbed by the fine and close compounding permeation vaporizing film selectivity of polymer atresia and scattering and permeating is crossed film, see through side by the 10mmHg vacuum vaporization at film, and then be condensed into liquid and be collected by-10 ℃ of brine condensers and remove, material side at film obtains the compound higher alcohols of 796kg.Because wherein the total content of amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol only has 2.6%, be less than 3% lower limit requirement, so separately adding the 5kg octanol is allocated, finally obtain the multi-carbon alcohol cosolvent product of 801kg moisture 0.4%, separately contain ethanol 72.4%, propyl alcohol and Virahol 15.1%, butanols and isomery alcohol 10.0% thereof, all the other 3.1% are amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol.This product is for M15, and this multi-carbon alcohol cosolvent addition 0.5% gets final product, lower than the consumption of general solubility promoter 3% left and right; For M85, this multi-carbon alcohol cosolvent addition 0.1% gets final product, lower than the consumption of general solubility promoter 1% left and right.Therefore, this product is a kind of efficient, high-quality, the cheap oily solubility promoter of compound higher alcohols alcohol.
Claims (4)
1. a composite multi-carbon alcohol cosolvent, it is characterized in that: this solubility promoter adopts the tankage of alcohol production factory or distillery to make raw material, contained component is by mass: ethanol 40 ~ 70%, propyl alcohol and Virahol 5 ~ 15%, propyl carbinol, isopropylcarbinol and the trimethyl carbinol 5 ~ 15%, amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol and decyl alcohol 1 ~ 5%, and water 14 ~ 40%, remove solid particulate through pre-treatment, infiltrating and vaporizing membrane dehydration and compound higher alcohols adaptation step, obtain a kind of by mass containing ethanol 45 ~ 70%, propyl alcohol and Virahol 10 ~ 20%, butanols and isomery alcohol 16 ~ 24% thereof, all the other 3 ~ 8% are amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol and decyl alcohol, water content is lower than 0.5% composite multi-carbon alcohol cosolvent.
2. the preparation method according to the described composite multi-carbon alcohol cosolvent of claim 1, it is characterized in that: this preparation method comprises the steps:
A, raw materials pretreatment: by described alcohol production factory or distillery tankage, contain ethanol, propyl alcohol, Virahol, propyl carbinol, isopropylcarbinol, the trimethyl carbinol, amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol and decyl alcohol by described quality, and the liquid higher alcohols tankage of water, by filtering or centrifugation, the pre-treatment solid particulate;
B, infiltrating and vaporizing membrane dehydration: the infiltrating and vaporizing membrane dehydration adopts specific equipment, by above-mentioned moisture many carbon fusel tankage feed liquid after interchanger is heated to 70 ~ 95 ℃, below 0.4Mpa pressure, sending into the film device by fresh feed pump contacts with the fine and close compounding permeation vaporizing film of polymer atresia, moisture is absorbed and scattering and permeating by this vaporization film selectivity, film see through side by the 10mmHg vacuum vaporization, and then be condensed into liquid and be collected by-10 ℃ of brine condensers and remove;
C, the allotment of compound higher alcohols: each component concentration of many carbon fusel after the dehydration of allotment infiltrating and vaporizing membrane, make it reach the specification of quality of composite multi-carbon alcohol cosolvent, by mass containing ethanol 45 ~ 70%, propyl alcohol and Virahol 10 ~ 20%, butanols and isomery alcohol 16 ~ 24% thereof, all the other 3 ~ 8% are amylalcohol, primary isoamyl alcohol, hexanol, enanthol, octanol, nonyl alcohol and decyl alcohol, and moisture is below 0.5%, to guarantee the quality product of composite multi-carbon alcohol cosolvent.
3. the preparation method of composite multi-carbon alcohol cosolvent according to claim 2, it is characterized in that: the specific equipment that described infiltrating and vaporizing membrane dehydration adopts comprises head tank, strainer, fresh feed pump, interchanger, film device, vacuum pump, condenser, products pot, deviates from water pot, and connects with corresponding connecting pipeline.
4. the preparation method of composite multi-carbon alcohol cosolvent according to claim 2, it is characterized in that: in described infiltrating and vaporizing membrane dehydrating step, the interchanger thermal source is steam heating or electrically heated.
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| CN2010102814491A CN102399603B (en) | 2010-09-15 | 2010-09-15 | Composite multi-carbon alcohol cosolvent and preparation method thereof |
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| CN105885962A (en) * | 2014-10-09 | 2016-08-24 | 张兆平 | Method for preparing alcohol-based fuel oil |
| CN108998107A (en) * | 2018-06-20 | 2018-12-14 | 重庆市涪陵赵氏化工建材有限公司 | A kind of blend gasoline |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4705532A (en) * | 1985-07-15 | 1987-11-10 | The Standard Oil Company | Alcohol compositions for blending with gasoline |
| US5720784A (en) * | 1993-07-26 | 1998-02-24 | Victorian Chemical International Pty. Ltd. | Fuel blends |
| CN101146896A (en) * | 2005-02-17 | 2008-03-19 | 标准酒精公司美国股份有限公司 | Mixed alcohol fuels for internal combustion engines, furnaces, boilers, kilns and gasifiers |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4705532A (en) * | 1985-07-15 | 1987-11-10 | The Standard Oil Company | Alcohol compositions for blending with gasoline |
| US5720784A (en) * | 1993-07-26 | 1998-02-24 | Victorian Chemical International Pty. Ltd. | Fuel blends |
| CN101146896A (en) * | 2005-02-17 | 2008-03-19 | 标准酒精公司美国股份有限公司 | Mixed alcohol fuels for internal combustion engines, furnaces, boilers, kilns and gasifiers |
Non-Patent Citations (2)
| Title |
|---|
| "杂醇油脱水工艺研究进展";徐晓芳等;《酿酒科技》;20051231(第7期);第47-50页 * |
| 徐晓芳等."杂醇油脱水工艺研究进展".《酿酒科技》.2005,(第7期),第47-50页. |
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