CN102504945A - Process for refining waste oil - Google Patents
Process for refining waste oil Download PDFInfo
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- CN102504945A CN102504945A CN2011103443703A CN201110344370A CN102504945A CN 102504945 A CN102504945 A CN 102504945A CN 2011103443703 A CN2011103443703 A CN 2011103443703A CN 201110344370 A CN201110344370 A CN 201110344370A CN 102504945 A CN102504945 A CN 102504945A
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- waste grease
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- waste oil
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Abstract
The invention discloses a process for refining waste oil. The process comprises the following steps of: performing preliminary separation to remove a water phase and impurities from the lower layer of the waste oil, removing water and a salt substance from an oil phase mixture on the upper layer of the waste oil under the action of a high-voltage electric field, heating at high temperature to damage a glue impurity system, and centrifuging to remove glue impurities. The process has the advantages that: the process of refining the waste oil is shortened while the waste oil meets the esterification production requirement of biodiesel after being refined by the process; strong acid and strong alkali are not used, so that corrosion to reaction equipment is reduced; the using amount of a chemical additive is reduced, steps of washing, vacuum drying and the like are avoided, and the problem of environmental pollution caused by sewage treatment difficulty in the conventional process is solved; the refined high temperature waste oil also can be used as a heat source, heat energy in the whole process is reasonably and efficiently utilized, and energy consumption is reduced; and the quality of the refined waste oil is improved, so that the problems of coking, carbon deposition, equipment blockage and the like which are generated in the process of producing the biodiesel are solved.
Description
Technical field
The present invention relates to a kind of waste grease process for refining.
Background technology
Along with the day that world energy sources uses is becoming tight, the various new forms of energy that searching can substitute fossil energy become one of research task of various countries, the world today.And biofuel has great advantage because of it at aspects such as dynamic performance, environmental-protecting performance and safety performances, receives much concern in recent years, has obtained development faster.
Biofuel is the diesel oil that animal-plant oil obtains through transesterify production, and biofuel is sulfur-bearing and aromatic hydrocarbons not, and cetane value is high, lubricity is good, is a kind of high-quality clean diesel.The raw material of biofuel is main with waste grease, and large-scale vegetables oil raw material is used and is still waiting further exploitation, and waste grease is meant the animal-plant oil that can not eat again, comprises sewer oil, acidifying oil, oily, the useless animal oil of catering trade or the like.If these waste greases produce the back and can not get reasonable utilization, will bring very big problem of environmental pollution, utilize these waste grease production biofuel, both can reduce pollution, can solve the multiple hidden danger that waste grease brings to the mankind again.
Traditional oil refining process mainly is various physicochemical property of utilizing each impurity composition in the waste grease; Adopt corresponding physical chemistry means to handle; These methods for the more stable conventional animal-plant oil of component be can effectively remove wherein most of mechanical impurity, water-soluble glue is assorted and fat-soluble glue is assorted; But for waste grease; Because its source is unstable, particularly contains peptized impurities and unsaponifiables such as aliphatic polymer and composite metal salt such as a considerable amount of phosphatide, protein, lymphatic temperament, glycosyl triglyceride in the waste grease, it is effectively refining to adopt traditional method to be difficult to.And traditional oil refining process is on the one hand because the complicacy of waste grease causes chemicaladditives of a great variety; A large amount of strong acid, highly basic of using destroy serious to corrosion on Equipment; In treating processes, need on the other hand through operations such as separation, washing, vacuum-dryings, the large amount of sewage complex disposal process of generation, environmental pollution is serious; Whole grease refinement treatment long flow path, energy consumption is high.
Summary of the invention
Goal of the invention: to the problems referred to above, the purpose of this invention is to provide that a kind of chemicaladditives is few, technical process simple, the waste grease process for refining of efficient, saving, environmental protection.
Technical scheme: a kind of waste grease process for refining, waste grease lower floor's water and impurity are removed in initial gross separation, and the upper oil phase mixture removes moisture and salts substances under the high-voltage electric field effect, and assorted system of heat destruction glue and centrifugal removal glue are assorted again gets final product.
Add emulsion splitter during initial gross separation and accelerate the settlement separate of water and impurity in the waste grease; The add-on of said emulsion splitter is 2%～3% of a said waste grease quality; The mass concentration of said emulsion splitter is 0.05%～1.0%, and temperature of reaction is 60 ℃～110 ℃, reaction times 2h～3h.
Best, the mass concentration of said emulsion splitter is 0.1%～0.8%, temperature of reaction is 80 ℃～90 ℃.
Said emulsion splitter is one or more in calcium magnesium salts, benzalkonium chloride, sodium salt, the cats product.
The assorted content of water is usually between 2%～9% in the waste grease, and mix content, metallic salt material remaining quantity of high more its glue of moisture content is also high more, adds the emulsion splitter preliminary sedimentation and falls separate part water and impurity with the raising separation efficiency.
The upper oil phase mixture removes moisture and salts substances under the high-voltage electric field effect temperature of reaction is 100 ℃～180 ℃, and reaction pressure is 1.0MPa～2.0MPa, and high-voltage electric field intensity is 0.5KV/cm～2.5KV/cm, and the reaction times is 2min～10min.
Best; The upper oil phase mixture removes moisture and salts substances under the high-voltage electric field effect temperature of reaction is 130 ℃～160 ℃; Reaction pressure is 1.3MPa～1.8MPa, and high-voltage electric field intensity is 1.5KV/cm～2.0KV/cm, and the reaction times is 3min～6min.
The upper oil phase mixture is after the high-voltage electric field effect, and moisture content is not higher than 0.3% of upper oil phase mixture quality.
Because the upper oil phase mixture needs high temperature degumming after the high-voltage electric field effect; So the upper oil phase mixture being removed the reaction conditions control of moisture and salts substances under the high-voltage electric field effect requires very high; Moisture content is not higher than 0.3% of upper oil phase mixture quality and is reaction termination measurement index; The principle of utilizing grease under certain temperature and certain pressure, to descend with the avidity of water; Solve dehydration problem, and the binding ability of metals ion and water molecules is stronger, makes also to have removed a large amount of salts substances when removing moisture.
The temperature of reaction that heat is destroyed the assorted system of glue is 200 ℃～280 ℃, and the reaction times is 2min～8min.
Best, the temperature of reaction that heat is destroyed the assorted system of glue is 220 ℃～260 ℃, the reaction times is 3min～5min.
Peptized impurities such as the phosphatide that contains in the waste grease, protein, lymphatic temperament, glycosyl triglyceride and unsaponifiables such as aliphatic polymer and composite metal salt at high temperature can very fast sex change aggregate into macromolecular substance; Thereby the glue heterocoagulation of the upper oil phase mixture after the high-voltage electric field effect after heat; Possess the condition of spinning, thereby reach the purpose of fast degumming.
Beneficial effect: compared with prior art, advantage of the present invention is to guarantee that waste grease through when satisfying biofuel esterification production requirement behind the process for refining, has shortened the process for refining flow process of waste grease; Do not re-use strong acid, highly basic, reduced corrosion conversion unit; Reduce the use of chemicaladditives, avoided steps such as washing, vacuum-drying, solved WWT difficulty in the traditional technology and the problem of environmental pollution that brings; High temperature waste grease after refining can also rationally efficiently utilize heat energy in the whole process flow as thermal source, reduces energy consumption; Waste grease quality after the refining must be improved, thus problems such as the coking that produces in the reduction production of biodiesel process, carbon distribution, equipment obstruction.
Embodiment
Below in conjunction with specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Embodiment 1: it is 0.1% the aqueous solution that sal epsom and benzalkonium chloride were mixed into mass concentration in 1: 1 by volume; In treating the waste grease of refinement treatment, be incorporated as the sal epsom and the benzalkonium chloride mixed aqueous solution of waste grease quality 2%～3%; Get into the insulation slurry tank behind the thorough mixing; And be warming up to 85 ℃, insulation and separate remove lower floor's water and impurity after 2 hours, the upper oil phase mixture gets into the electro-dewatering jar continuously after interchanger is warming up to 135 ℃.The electro-dewatering pressure tank is 1.5MPa, and high-voltage electric field intensity is 1.6KV/cm, and the residence time is 3min.Upper oil phase mixture after the dehydration gets into the self-cleaning type well heater continuously and is warming up to 228 ℃, and the residence time is 3min, gets into horizontal spiral centrifuge then and separates the assorted refining back waste grease that obtains of removal glue.Through after the above treating process, the index of waste grease is changed to: acetone insoluble matter by 3.2% reduce to 0.15%, unsaponifiables by 4.8% reduce to 0.35%, moisture reduces to 0.11% by 2.15%.
Embodiment 2: it is 0.5% the aqueous solution that sodium-chlor and trolamine were mixed into mass concentration in 1: 0.2 by volume; In treating the waste grease of refinement treatment, be incorporated as the sodium-chlor and the trolamine mixed aqueous solution of waste grease quality 2%～3%; Get into the insulation slurry tank behind the thorough mixing; And be warming up to 90 ℃, insulation and separate remove lower floor's water and impurity after 2.5 hours, the upper oil phase mixture gets into the electro-dewatering jar continuously after interchanger is warming up to 142 ℃.The electro-dewatering pressure tank is 1.6MPa, and high-voltage electric field intensity is 1.8KV/cm, and the residence time is 4min.Upper oil phase mixture after the dehydration gets into the self-cleaning type well heater continuously and is warming up to 245 ℃, and the residence time is 2min, gets into horizontal spiral centrifuge then and separates the assorted refining back waste grease that obtains of removal glue.Through after the above treating process, the index of waste grease is changed to: acetone insoluble matter by 2.0% reduce to 0.12%, unsaponifiables by 3.3% reduce to 0.30%, moisture reduces to 0.10% by 1.92%.
Embodiment 3: sodium-chlor, methyl-sulfate and narrow the azoles quinoline to be mixed into mass concentration in 1: 0.1: 0.1 by volume be 0.05% the aqueous solution; In treating the waste grease of refinement treatment, be incorporated as sodium-chlor, the methyl-sulfate of waste grease quality 2%～3% and narrow azoles quinoline mixed aqueous solution; Get into the insulation slurry tank behind the thorough mixing; And be warming up to 80 ℃, insulation and separate remove lower floor's water and impurity after 3 hours, the upper oil phase mixture gets into the electro-dewatering jar continuously after interchanger is warming up to 152 ℃.The electro-dewatering pressure tank is 1.38MPa, and high-voltage electric field intensity is 2.02KV/cm, and the residence time is 3.5min.Upper oil phase mixture after the dehydration gets into the self-cleaning type well heater continuously and is warming up to 250 ℃, and the residence time is 3min, gets into horizontal spiral centrifuge then and separates the assorted refining back waste grease that obtains of removal glue.Through after the above treating process, the index of waste grease is changed to: acetone insoluble matter by 1.8% reduce to 0.22%, unsaponifiables by 3.3% reduce to 0.18%, moisture reduces to 0.10% by 2.63%.
Embodiment 4: it is 0.6% the aqueous solution that sodium-chlor and sodium phosphate were mixed into mass concentration in 1: 0.5 by volume; In treating the waste grease of refinement treatment, be incorporated as sodium-chlor, the methyl-sulfate of waste grease quality 2%～3% and narrow azoles quinoline mixed aqueous solution; Get into the insulation slurry tank behind the thorough mixing; And be warming up to 88 ℃, insulation and separate remove lower floor's water and impurity after 3 hours, the upper oil phase mixture gets into the electro-dewatering jar continuously after interchanger is warming up to 136 ℃.The electro-dewatering pressure tank is 1.52MPa, and high-voltage electric field intensity is 2.15KV/cm, and the residence time is 2.5min.Upper oil phase mixture after the dehydration gets into the self-cleaning type well heater continuously and is warming up to 248 ℃, and the residence time is 2min, gets into horizontal spiral centrifuge then and separates the assorted refining back waste grease that obtains of removal glue.Through after the above treating process, the index of waste grease is changed to: acetone insoluble matter by 1.6% reduce to 0.08%, unsaponifiables by 3.7% reduce to 0.23%, moisture reduces to 0.12% by 2.8%.
Claims (9)
1. waste grease process for refining; It is characterized in that: waste grease lower floor's water and impurity are removed in initial gross separation; The upper oil phase mixture removes moisture and salts substances under the high-voltage electric field effect, assorted system of heat destruction glue and centrifugal removal glue are assorted again gets final product.
2. waste grease process for refining according to claim 1; It is characterized in that: add emulsion splitter during initial gross separation and accelerate the settlement separate of water and impurity in the waste grease; The add-on of said emulsion splitter is 2%～3% of a said waste grease quality; The mass concentration of said emulsion splitter is 0.05%～1.0%, and temperature of reaction is 60 ℃～110 ℃, reaction times 2h～3h.
3. waste grease process for refining according to claim 2 is characterized in that: the mass concentration of said emulsion splitter is 0.1%～0.8%, and temperature of reaction is 80 ℃～90 ℃.
4. waste grease process for refining according to claim 2 is characterized in that: said emulsion splitter is one or more in calcium magnesium salts, benzalkonium chloride, sodium salt, the cats product.
5. waste grease process for refining according to claim 1; It is characterized in that: the upper oil phase mixture removes moisture and salts substances under the high-voltage electric field effect temperature of reaction is 100 ℃～180 ℃; Reaction pressure is 1.0MPa～2.0MPa; High-voltage electric field intensity is 0.5KV/cm～2.5KV/cm, and the reaction times is 2min～10min.
6. waste grease process for refining according to claim 5; It is characterized in that: the upper oil phase mixture removes moisture and salts substances under the high-voltage electric field effect temperature of reaction is 130 ℃～160 ℃; Reaction pressure is 1.3MPa～1.8MPa; High-voltage electric field intensity is 1.5KV/cm～2.0KV/cm, and the reaction times is 3min～6min.
7. according to claim 1 or 5 or 6 described waste grease process for refining, it is characterized in that: the upper oil phase mixture is after the high-voltage electric field effect, and moisture content is not higher than 0.3% of upper oil phase mixture quality.
8. waste grease process for refining according to claim 1 is characterized in that: the temperature of reaction that heat is destroyed the assorted system of glue is 200 ℃～280 ℃, and the reaction times is 2min～8min.
9. waste grease process for refining according to claim 8 is characterized in that: the temperature of reaction that heat is destroyed the assorted system of glue is 220 ℃～260 ℃, and the reaction times is 3min～5min.
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| CN2011103443703A CN102504945A (en) | 2011-11-04 | 2011-11-04 | Process for refining waste oil |
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| CN2011103443703A CN102504945A (en) | 2011-11-04 | 2011-11-04 | Process for refining waste oil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105062671A (en) * | 2015-08-31 | 2015-11-18 | 江西省硒海油脂有限公司 | Technology for refining rice bran oil from rice bran |
| CN107927286A (en) * | 2018-01-16 | 2018-04-20 | 宁波沸柴机器人科技有限公司 | A kind of preparation method of colorful takeup type sugar cake |
| CN109233896A (en) * | 2018-10-19 | 2019-01-18 | 中石化（洛阳）科技有限公司 | A kind for the treatment of process and its processing unit of diesel oil muddiness |
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| CN101914413A (en) * | 2010-04-06 | 2010-12-15 | 福建师范大学 | Low-temperature refining method of tea seed oil |
| CN102071103A (en) * | 2011-01-25 | 2011-05-25 | 湖南省生物柴油工程技术研究中心 | Novel dry-method degumming method for abandoned oil |
| CN102154058A (en) * | 2011-03-11 | 2011-08-17 | 江苏恒顺达生物能源有限公司 | Process for carrying out pretreatment on waste oil |
| CN102179311A (en) * | 2011-03-16 | 2011-09-14 | 内蒙古包钢稀土林峰科技有限公司 | Anion collecting agent prepared from illegal cooking oil |
| CN102206541A (en) * | 2010-03-31 | 2011-10-05 | 江苏恒顺达生物能源有限公司 | Method for refining waste grease |
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2011
- 2011-11-04 CN CN2011103443703A patent/CN102504945A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102206541A (en) * | 2010-03-31 | 2011-10-05 | 江苏恒顺达生物能源有限公司 | Method for refining waste grease |
| CN101914413A (en) * | 2010-04-06 | 2010-12-15 | 福建师范大学 | Low-temperature refining method of tea seed oil |
| CN102071103A (en) * | 2011-01-25 | 2011-05-25 | 湖南省生物柴油工程技术研究中心 | Novel dry-method degumming method for abandoned oil |
| CN102154058A (en) * | 2011-03-11 | 2011-08-17 | 江苏恒顺达生物能源有限公司 | Process for carrying out pretreatment on waste oil |
| CN102179311A (en) * | 2011-03-16 | 2011-09-14 | 内蒙古包钢稀土林峰科技有限公司 | Anion collecting agent prepared from illegal cooking oil |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105062671A (en) * | 2015-08-31 | 2015-11-18 | 江西省硒海油脂有限公司 | Technology for refining rice bran oil from rice bran |
| CN107927286A (en) * | 2018-01-16 | 2018-04-20 | 宁波沸柴机器人科技有限公司 | A kind of preparation method of colorful takeup type sugar cake |
| CN109233896A (en) * | 2018-10-19 | 2019-01-18 | 中石化（洛阳）科技有限公司 | A kind for the treatment of process and its processing unit of diesel oil muddiness |
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Application publication date: 20120620 |