CN105038834A - Method for preparing fuel oil with high alkane content by co-cracking non-edible grease and waste plastic - Google Patents
Method for preparing fuel oil with high alkane content by co-cracking non-edible grease and waste plastic Download PDFInfo
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- CN105038834A CN105038834A CN201510440217.9A CN201510440217A CN105038834A CN 105038834 A CN105038834 A CN 105038834A CN 201510440217 A CN201510440217 A CN 201510440217A CN 105038834 A CN105038834 A CN 105038834A
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock
Abstract
Provided is a method for preparing fuel oil with high alkane content by co-cracking non-edible grease and waste plastic. The method comprises the steps that 1, the waste plastic is cut and broken into fragments of which the area is smaller than 100 cm<2>; 2, the waste plastic and the non-edible grease are mixed according to the mass ratio of 1:1-1:10; 3, the mixture is fed into a cracking reactor, air in the reactor is replace by nitrogen, heating is conducted, the heating rate is 5-300 DEG C/min, when the temperature of reactant is increased to 150 DEG C, a stirring device is started, heating is conducted continuously, the temperature of the cracking reaction is controlled to range from 350 DEG C to 600 DEG C, the reaction time is 2-90 min, and after gas-solid separation is conducted on a cracking reaction product, condensation is conducted on the gas, and the fuel oil with the high alkane content is obtained. By means of the method for preparing the fuel oil with the high alkane content by co-cracking the non-edible grease and the waste plastic, according to the problems that the plastic structure is compact and coking is serious in the cracking process, the swelling effect of the grease on the plastic and the characteristic that glycerin residues in the grease release free state hydrogen atoms under specific cracking conditions are fully utilized. The stable and high-quality liquid fuel oil of which the oil productivity is over 85% and the alkane content reaches up to 74% is obtained.
Description
Technical field
The invention belongs to Environmental Chemical Engineering and new forms of energy chemical field.
Background technology
The biofuel advantage maximum relative to fossil oil has recyclability and zero release, and at present, animal grease and Vegetable oil lipoprotein (both are triglyceride level) are the main raw materials obtaining biofuel.Triglyceride level can obtain renewable fuel oil by thermochemistry means such as thermo-crackings, and production process has considerable hydrogen to have more than needed.Meanwhile in Municipal solid rubbish, agriculture production, there are large quantity of exhaust gas plastics, because it is difficult to be formed white pollution by biological decomposition at nature.The main component of plastics is olefin polymerizations, and it is more that the waste plastic high temperature pyrolysis carried out or catalytic pyrolysis prepare unsaturated hydrocarbons research, can only lay particular emphasis on manufacture inflammable gas in a lot of situation.Such as Chinese patent 20132002196.3, discloses a kind of plastic resource continuous gasification cracking multi-effect furnace.This is due to olefin polymerization compact structure, plastic cracking belongs to random free radical reaction, scission reaction is fractured into priority often with C-H bond, result produces a large amount of coke, liquid product yield is low, obtain containing the unsaturated hydrocarbons such as a large amount of alkene, aromatic hydrocarbons in a small amount of cracked oil, character is unstable, and antioxidative stabilizer is poor.Therefore need to carry out hydrotreatment to plastic cracking oil, Chinese invention 200810225614.4, disclose a kind of method that waste-plastic pyrolysis oil hydrogenation produces fine-quality diesel oil blending component.
Report more about utilizing non-edible animal grease and Vegetable oil lipoprotein cracking for the research of fuel oil.Chinese invention 201210397793.6 provides a kind of method that USY catalytic pyrolysis bio-oil prepares liquid fuel, temperature of reaction 400 ~ 500 DEG C, declare that triglyceride level cleavage rate can reach more than 90%, liquid fuel yield can reach more than 80%, and product concentrates between C8 ~ C10.Yang Ning etc. take down-flow fluidized bed using ECT as reactor, with super stable molecular sieve equilibrium catalyst, catalytic pyrolysis research is carried out to vegetables oil, in the temperature range of 460 ~ 560 DEG C, liquid yield is greater than 90%, pressure gasoline octane value reaches 90, and oxygen, sulphur, nitrogen and other heavy metal and ash content all do not detect, the content of aromatic hydrocarbons and alkene is respectively 39.74% and 30.79%(Yang Ning, Wei Fei, Li Qiang. the small-sized Hot-state experiment of clean gasoline [C] // Chinese Petroleum Society (CPS) the 5th refining of petroleum Annual Conference prepared by down-flow fluidized bed using ECT catalytic cracking vegetables oil, 2005:633-656.), show that oil splitting prepares the technology relative maturity of hydrocarbon fuel.
But non-edible animal grease and Vegetable oil lipoprotein and the common cracking of plastics then rarely have the report of research work at present.The advantage on some physicochemical property of inedible oil fat can be made full use of, fine and close for plastic construction, the problem that cracking process coking is serious, make full use of the swelling effect of grease to plastics, and glycerol residue discharges the feature of free state hydrogen atom under specific cracking condition in grease, reduce the activation energy of plastic cracking, shorten the scission reaction time, improve the saturation ratio of split product, become critical problem.
Summary of the invention
The object of the invention is to for prior art not enough, particularly waste plastic thermo-cracking prepares the low problem of fuel efficiency.There is provided a kind of inedible oil fat and common cracking of plastic waste of utilizing for the method for the oil fuel of high Determination of Alkane Content, reduce scission reaction activation energy, both liftings copyrolysis fuel oil total yield, improve the quality of oil fuel simultaneously.
The present invention realizes as follows.
(1) area is become to be less than 100cm plastic waste cutting and crushing
2fragment.
(2) plastic waste and the inedible oil fat ratio that 1:1 ~ 1:10 mixes in mass ratio are mixed.
(3) mixture is sent into cracking reactor, the air in reactor is gone out with nitrogen replacement, heat up, temperature rise rate is 5 ~ 300 DEG C/min, when temperature of charge intensification arrival 150 DEG C, open whipping appts, continue to heat up, scission reaction temperature controls at 350 ~ 600 DEG C, and the reaction times is 5 ~ 90min, cleavage reaction product is after gas, solid separation, and the liquid after condensation of gas is the oil fuel of high Determination of Alkane Content.
Inedible oil fat described in the present invention refers to the Vegetable oil lipoprotein of discarded plant grease, discarded animal oil and non-consumption.
Waste plastic of the present invention refers to discarded Low Density Polyethylene, discarded high density polyethylene(HDPE), discarded polypropylene, discarded polyvinyl chloride and discarded polystyrene.
Cracking reactor of the present invention is high pressure vessel, stainless steel.
In the split product obtained in the present invention, liquid product yield can reach more than 85%, and wherein Determination of Alkane Content is up to more than 74%, and the liquid fuel antioxidative stabilizer total insoluble substance through rectifying is less than 0.5mg/100ml(GB252-200 detection method).
The present invention utilizes the good and swelling effect to plastics of grease heat conductance, reduces the activation energy of plastic cracking, shortens the scission reaction time, reach control pyrogenic reaction, improve the object of liquid fuel yield.
Next utilizes glycerol residue in grease under specific cracking condition, discharge the feature of free state hydrogen atom, promote the positively charged fragment that long chain polymeric olefin cracking is formed, obtain hydrogenation in time and settle out, suppress the formation of terminal olefine, many unsaturated hydrocarbons, aromatic hydrocarbons, advantage higher for the hydrogen-carbon ratio of plastic waste, with the ingenious combination of inedible oil fat chemical reaction activity advantage, achieve inedible oil fat and waste plastic is had complementary advantages in liquid fuel conversion process.Exploitation high-quality liquid fuel; make use of inedible oil fat renewable biomass resource most possibly; preventing waste cooking oil to reflux dining table, also providing innovative approach for solving the problem of environmental pollution of plastic waste, simultaneously for food safety and environment protection provide a feasible technology.
Outstanding advantages of the present invention is.
(1) utilize the good and swelling effect to plastics of grease heat conductance, reduce the activation energy of plastic cracking, shorten the scission reaction time, reach control pyrogenic reaction, improve the object of liquid fuel yield.
(2) utilize glycerol residue in grease under specific cracking condition, discharge the feature of free state hydrogen atom, promote the positively charged fragment that long chain polymeric olefin cracking is formed, obtain hydrogenation in time and tend towards stability, suppressing the formation of terminal olefine, many unsaturated hydrocarbons, aromatic hydrocarbons, promoting oil quality.
(3) this invention is advantage higher for the hydrogen-carbon ratio of plastic waste, and the ingenious combination of inedible oil fat chemical reaction activity advantage, achieves inedible oil fat and waste plastic is had complementary advantages in liquid fuel conversion process.Exploitation high-quality liquid fuel; maximum possible make use of inedible oil fat renewable biomass resource; prevent waste cooking oil backflow dining table; also the problem of environmental pollution of plastic waste is solved; simultaneously for food safety and environment protection provide a feasible technology; have outstanding society, environment and economy benefit, its exploitation prospect is bright.
Embodiment
The present invention will be described further by following examples.
Embodiment 1.
(1) discarded LDPE (Low-density polyethylene plastics) 30 grams being cut into area is 4cm
2subquadrate fragment.
(2) by LDPE (Low-density polyethylene plastics) fragment discarded for step (1) and the 1:1 mixing in mass ratio of wilson dogwood oil.
(3) step (2) mixture is sent into cracking reactor, the air in reactor is gone out with nitrogen replacement, heat up, temperature rise rate is 20 DEG C/min, when temperature of charge intensification arrival 150 DEG C, open whipping appts, continue to heat up, scission reaction temperature controlled at 400 DEG C, the reaction times is 20min, cleavage reaction product is after gas, solid separation, and in gaseous product, condensable liquid obtains liquid fuel oil 51.3 grams.Wherein Determination of Alkane Content is up to 74% by analysis, and the liquid fuel antioxidative stabilizer total insoluble substance through rectifying is less than 0.5mg/100ml(GB252-200 detection method).
Embodiment 2.
(1) discarded high-density polyethylene plastics 30 grams being cut into area is 3cm
2subquadrate fragment.
(2) by high-density polyethylene plastics fragment discarded for step (1) and the 1:1.5 mixing in mass ratio of wilson dogwood oil.
(3) step (2) mixture is sent into cracking reactor, the air in reactor is gone out with nitrogen replacement, heat up, temperature rise rate is 25 DEG C/min, when temperature of charge intensification arrival 150 DEG C, opens whipping appts, scission reaction temperature is controlled at 450 DEG C, reaction times is 18min, and cleavage reaction product is after gas, solid separation, and in gaseous product, condensable liquid obtains liquid fuel oil 64 grams.Wherein Determination of Alkane Content is up to 76% by analysis, and the liquid fuel antioxidative stabilizer total insoluble substance through rectifying is less than 0.6mg/100ml(GB252-200 detection method).
Embodiment 3.
(1) discarded acrylic plastering 30 grams being cut into area is 2cm
2subquadrate fragment.
(2) by acrylic plastering fragment discarded for step (1) and the 1:2 mixing in mass ratio of wilson dogwood oil.
(3) step (2) mixture is sent into cracking reactor, the air in reactor is gone out with nitrogen replacement, heat up, be 30 DEG C/min by temperature rise rate, when temperature of charge intensification arrival 150 DEG C, open whipping appts, scission reaction temperature controls at 500 DEG C, reaction times is 17min, and cleavage reaction product is after gas, solid separation, and in gaseous product, condensable liquid obtains liquid fuel oil 77 grams.Wherein Determination of Alkane Content is up to 75.2% by analysis, and the liquid fuel antioxidative stabilizer total insoluble substance through rectifying is less than 0.56mg/100ml(GB252-200 detection method).
These are only preferred embodiment of the present invention, but scope of the invention process is not limited.
Claims (3)
1. inedible oil fat and waste plastic copyrolysis prepare a method for high Determination of Alkane Content fuel oil, it is characterized in that as follows:
(1) area is become to be less than 100cm plastic waste cutting and crushing
2fragment;
(2) plastic waste and the inedible oil fat ratio that 1:1 ~ 1:10 mixes in mass ratio are mixed;
(3) mixture is sent into cracking reactor, the air in reactor is gone out with nitrogen replacement, heat up, temperature rise rate is 5 ~ 300 DEG C/min, when temperature of charge intensification arrival 150 DEG C, open whipping appts, continue to heat up, scission reaction temperature controls at 350 ~ 600 DEG C, and the reaction times is 2 ~ 90min, cleavage reaction product through gas, solid be separated after, by condensation of gas.
2. inedible oil fat according to claim 1 and waste plastic copyrolysis prepare the method for high Determination of Alkane Content fuel oil, it is characterized in that described inedible oil fat is the Vegetable oil lipoprotein of discarded plant grease, discarded animal oil or non-consumption.
3. inedible oil fat according to claim 1 and waste plastic copyrolysis prepare the method for high Determination of Alkane Content fuel oil, it is characterized in that described waste plastic is discarded Low Density Polyethylene, discarded high density polyethylene(HDPE), discarded polypropylene, discarded polyvinyl chloride or discarded polystyrene.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108102682A (en) * | 2018-01-23 | 2018-06-01 | 南京绿帝环保能源科技有限公司 | A kind of common cracking catalysis device of waste oil waste plastics |
CN108949210A (en) * | 2018-07-31 | 2018-12-07 | 乳源东阳光氟树脂有限公司 | A kind of operation method of monomer pyrolysis furnace |
CN112639058A (en) * | 2018-10-29 | 2021-04-09 | 中国石油化工股份有限公司 | Continuous operation method for microwave pyrolysis of solid material containing organic matter |
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CN101684410A (en) * | 2008-09-25 | 2010-03-31 | 李艺 | New technology and equipment for continuous oil refining from liquid raw materials and discarded plastics and tires |
US20110067305A1 (en) * | 2009-09-22 | 2011-03-24 | Martin Allan Morris | Hydrocarbon synthesizer |
CN202116509U (en) * | 2011-07-06 | 2012-01-18 | 刘志伟 | Computer controlled device for producing gasoline, diesel and natural gas by waste plastics, rubber and waste oil |
CN104479717A (en) * | 2014-11-10 | 2015-04-01 | 东南大学 | Method used for improving bio oil quality via co-catalysis of waste polyolefin plastic with biomass |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101684410A (en) * | 2008-09-25 | 2010-03-31 | 李艺 | New technology and equipment for continuous oil refining from liquid raw materials and discarded plastics and tires |
US20110067305A1 (en) * | 2009-09-22 | 2011-03-24 | Martin Allan Morris | Hydrocarbon synthesizer |
CN202116509U (en) * | 2011-07-06 | 2012-01-18 | 刘志伟 | Computer controlled device for producing gasoline, diesel and natural gas by waste plastics, rubber and waste oil |
CN104479717A (en) * | 2014-11-10 | 2015-04-01 | 东南大学 | Method used for improving bio oil quality via co-catalysis of waste polyolefin plastic with biomass |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108102682A (en) * | 2018-01-23 | 2018-06-01 | 南京绿帝环保能源科技有限公司 | A kind of common cracking catalysis device of waste oil waste plastics |
CN108949210A (en) * | 2018-07-31 | 2018-12-07 | 乳源东阳光氟树脂有限公司 | A kind of operation method of monomer pyrolysis furnace |
CN112639058A (en) * | 2018-10-29 | 2021-04-09 | 中国石油化工股份有限公司 | Continuous operation method for microwave pyrolysis of solid material containing organic matter |
CN112639058B (en) * | 2018-10-29 | 2022-12-20 | 中国石油化工股份有限公司 | Continuous operation method for microwave pyrolysis of solid material containing organic matter |
US11926794B2 (en) | 2018-10-29 | 2024-03-12 | China Petroleum & Chemical Corporation | Continuous operation method for microwave high-temperature pyrolysis of solid material comprising organic matter |
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