CN103451013A - Pretreatment method of waste oils and fats - Google Patents
Pretreatment method of waste oils and fats Download PDFInfo
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- CN103451013A CN103451013A CN2013104419414A CN201310441941A CN103451013A CN 103451013 A CN103451013 A CN 103451013A CN 2013104419414 A CN2013104419414 A CN 2013104419414A CN 201310441941 A CN201310441941 A CN 201310441941A CN 103451013 A CN103451013 A CN 103451013A
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Abstract
Disclosed is a pretreatment method of waste oils and fats. Insulation treatment is conducted through washing, methanesulfonic acid and polyacrylamide respectively so that impurities in the waste oils and fats can be effectively separated, the moisture and the impurities in the waste oils and fats are greatly reduced, the content of the moisture and the content of the impurities after treatment are smaller than or equal to 0.5%, the finished product yield of biodiesel can be improved by 1-2%, meanwhile, the COD in the separated moisture and impurities is smaller than or equal to 800mg/L, the BOD in the separated moisture and impurities is larger than or equal to 10,000mg/L, and the negative influence on a sewage treatment system can be avoided.
Description
Technical field
The invention belongs to technical field of biodiesel preparation, be specifically related to the pretreatment process of biofuel preparation process Raw oil, the method for stock oil washing removal of impurities during particularly for acid-base catalysis method production biofuel.
Background technology
The waste grease stock oil of production biofuel comprises the animal grease that waste cooking oil (sewer oil, hogwash fat), soap stock acidification oil, tankage are made etc.Except containing certain moisture, also contain the impurity components such as 1%～10% colloid, phosphatide, inorganic salt in these waste greases.These impurity components not only can affect esterification, transesterification reaction efficiency, when product distills, due to high temperature action, can produce the side reaction generations such as thermopolymerization simultaneously, cause refined biometric diesel yield and quality to reduce.
Existing waste grease treatment process mainly contains: filtering and impurity removing after (1) washing, and the method is simple, coarse, and after common washing, oily water separation is slow, and dust removal rate is low, and effect is difficult to reach the requirement of directly carrying out esterification; (2) pressurized hydrolysis, being about to the glyceryl ester hydrolysis becomes lipid acid and glycerol liquor mixture, after layering deglycerizin water, then lipid acid is distilled, and obtains the higher lipid acid of purity and carries out esterification, and this method operation is more, and equipment investment is large, and energy consumption is higher.
Summary of the invention
Technical problem to be solved by this invention is to overcome the shortcoming that existing stock oil pretreatment process exists, provide the velocity of separation of a kind of impurity and stock oil fast, and can effectively reduce the waste grease pretreatment process of the foreign matter contents such as moisture content and colloid in stock oil, phosphatide, inorganic salt.
Solving the problems of the technologies described above adopted technical scheme is: to the water that adds its quality 10%～15% in waste grease, be warming up to 60～80 ℃ under whipped state, constant temperature stirs 20～40 minutes, the methylsulfonic acid that adds waste grease quality 0.1%～0.5%, continue to stir 30～60 minutes, add the polyacrylamide of waste grease quality 0.01%～0.03%, then stir centrifugation 30～60 minutes.
Above-mentioned waste grease is the mixture of any one or they in the recovered acid carburetion produced in the animal grease made of food and beverage waste oil and grease (sewer oil, hogwash fat), soap stock acidification oil, tankage, biofuel manufacturing processed, and its acid number is less than 180mgKOH/g, density is 850～950kg/m
3, saponification value is greater than 150mgKOH/g.The molecular weight of above-mentioned polyacrylamide is 1,000 ten thousand～1,800 ten thousand.
The present invention mills amine by washing, methylsulfonic acid and polypropylene and is incubated respectively processing, impurity in waste grease is effectively separated, greatly reduce moisture and impurity component in waste grease, the assorted content of water≤0.5% after processing, can make the biofuel product yield can improve 1%～2%, the moisture of simultaneously separating and the COD≤800mg/L in impurity, BOD >=10000mg/L, can not cause disadvantageous effect to Sewage treatment systems.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail, but the invention is not restricted to these embodiment.
Embodiment 1
50kg Xi'an area food and beverage waste oil and grease (mixing oil of sewer oil and hogwash fat) is added in reactor, and its acid number is that 116mgKOH/g, density are 910kg/m
3, saponification value is 191mgKOH/g, moisture content 10%, impure 4%, add 5kg water in reactor, be warming up to 60 ℃ under whipped state, constant temperature stirs 20 minutes, then adds the 0.05kg methylsulfonic acid, 60 ℃ are continued to stir 30 minutes, then add the polyacrylamide that the 0.005kg molecular weight is 1,000 ten thousand, 60 ℃ are stirred 30 minutes again, with 6000 rev/mins of centrifugations of disk centrifugal separator, remove water, obtain moisture content 0.1%, impure 0.3% food and beverage waste oil and grease.
Embodiment 2
Area, 60kg Xi'an soap stock acidification oil is added in reactor, and its acid number is that 168mgKOH/g, density are 930kg/m
3, saponification value is 201mgKOH/g, moisture content 12%, impure 3%, add 9kg water in reactor, be warming up to 80 ℃ under whipped state, constant temperature stirs 20 minutes, then adds the 0.3kg methylsulfonic acid, 80 ℃ are continued to stir 60 minutes, then add the polyacrylamide that the 0.018kg molecular weight is 1,800 ten thousand, 80 ℃ are stirred 60 minutes again, with 6000 rev/mins of centrifugations of disk centrifugal separator, remove water, obtain moisture content 0.1%, impure 0.2% soap stock acidification oil.
Embodiment 3
The animal grease that 30kg Chongqing region tankage is made adds in reactor, and its acid number is that 139mgKOH/g, density are 900kg/m
3, saponification value is 216mgKOH/g, moisture content 8%, impure 7%, add 4.5kg water in reactor, be warming up to 80 ℃ under whipped state, constant temperature stirs 40 minutes, then adds the 0.15kg methylsulfonic acid, 80 ℃ are continued to stir 60 minutes, then add the polyacrylamide that the 0.009kg molecular weight is 1,200 ten thousand, 80 ℃ are stirred 60 minutes again, with 6000 rev/mins of centrifugations of disk centrifugal separator, remove water, obtain moisture content 0.1%, impure 0.1% animal grease.
Embodiment 4
Area, 25kg Xi'an recovered acid carburetion is added in reactor, and its acid number is that 126mgKOH/g, saponification value are that 157mgKOH/g, density are 920kg/m
3, moisture content 21%, impure 5%, add 2.5kg water in reactor, be warming up to 70 ℃ under whipped state, constant temperature stirs 40 minutes, then adds the 0.025kg methylsulfonic acid, 70 ℃ are continued to stir 60 minutes, then add the polyacrylamide that the 0.0075kg molecular weight is 1,600 ten thousand, 70 ℃ are stirred 60 minutes again, with 6000 rev/mins of centrifugations of disk centrifugal separator, remove water, obtain moisture content 0.1%, impure 0.2% recovered acid carburetion.
Claims (3)
1. the pretreatment process of a waste grease, it is characterized in that: to the water that adds its quality 10%～15% in waste grease, be warming up to 60～80 ℃ under whipped state, constant temperature stirs 20～40 minutes, the methylsulfonic acid that adds waste grease quality 0.1%～0.5%, continue to stir 30～60 minutes, adds the polyacrylamide of waste grease quality 0.01%～0.03%, stir again centrifugation 30～60 minutes.
2. the pretreatment process of waste grease according to claim 1, it is characterized in that: described waste grease is the mixture of any one or they in the recovered acid carburetion produced in the animal grease made of sewer oil, hogwash fat, soap stock acidification oil, tankage, biofuel manufacturing processed, and its acid number is less than 180mgKOH/g, density is 850～950kg/m
3, saponification value is greater than 150mgKOH/g.
3. the pretreatment process of waste grease according to claim 1 and 2, it is characterized in that: the molecular weight of described polyacrylamide is 1,000 ten thousand～1,800 ten thousand.
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| CN2013104419414A CN103451013A (en) | 2013-09-25 | 2013-09-25 | Pretreatment method of waste oils and fats |
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| CN2013104419414A CN103451013A (en) | 2013-09-25 | 2013-09-25 | Pretreatment method of waste oils and fats |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740464A (en) * | 2014-01-01 | 2014-04-23 | 湖北宜恒茶油产业科技有限责任公司 | Method for demulsifying and purifying plant crude oil |
| CN104559435A (en) * | 2015-01-21 | 2015-04-29 | 吴俊荣 | Method for preparing waste paper deinking agent by using swill-cooked dirty oil as raw material |
| CN105779138A (en) * | 2016-04-27 | 2016-07-20 | 广东工业大学 | Curing agent and application thereof |
| CN108102781A (en) * | 2017-11-15 | 2018-06-01 | 苏州纳贝通环境科技有限公司 | A kind of processing method of waste cooking oils |
| CN108219837A (en) * | 2018-02-07 | 2018-06-29 | 山东联星能源集团有限公司 | A kind of super-low sulfur petrol and diesel oil production method |
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| CN1129954A (en) * | 1993-08-30 | 1996-08-28 | 昭和电工株式会社 | Novel lipase, microorganism producing the lipase, process for producing the lipase and use of the lipase |
| CN101215020A (en) * | 2007-12-28 | 2008-07-09 | 青海洁神食品垃圾处理产业有限公司 | Integral separation device and method for kitchen garbage, waste-water and grease |
| CN102146318A (en) * | 2011-02-12 | 2011-08-10 | 青岛福瑞斯生物能源科技开发有限公司 | Method for preparing biodiesel by using palm oil |
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2013
- 2013-09-25 CN CN2013104419414A patent/CN103451013A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129954A (en) * | 1993-08-30 | 1996-08-28 | 昭和电工株式会社 | Novel lipase, microorganism producing the lipase, process for producing the lipase and use of the lipase |
| CN101215020A (en) * | 2007-12-28 | 2008-07-09 | 青海洁神食品垃圾处理产业有限公司 | Integral separation device and method for kitchen garbage, waste-water and grease |
| CN102146318A (en) * | 2011-02-12 | 2011-08-10 | 青岛福瑞斯生物能源科技开发有限公司 | Method for preparing biodiesel by using palm oil |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740464A (en) * | 2014-01-01 | 2014-04-23 | 湖北宜恒茶油产业科技有限责任公司 | Method for demulsifying and purifying plant crude oil |
| CN103740464B (en) * | 2014-01-01 | 2015-11-04 | 湖北宜恒茶油产业科技有限责任公司 | A kind of method of breakdown of emulsion purifying raw plant oil |
| CN104559435A (en) * | 2015-01-21 | 2015-04-29 | 吴俊荣 | Method for preparing waste paper deinking agent by using swill-cooked dirty oil as raw material |
| CN105779138A (en) * | 2016-04-27 | 2016-07-20 | 广东工业大学 | Curing agent and application thereof |
| CN108102781A (en) * | 2017-11-15 | 2018-06-01 | 苏州纳贝通环境科技有限公司 | A kind of processing method of waste cooking oils |
| CN108219837A (en) * | 2018-02-07 | 2018-06-29 | 山东联星能源集团有限公司 | A kind of super-low sulfur petrol and diesel oil production method |
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Application publication date: 20131218 |