CN108559543A - The technique that supercritical water is heat-treated waste plastics and stalk mixture production hydrocarbon ils - Google Patents
The technique that supercritical water is heat-treated waste plastics and stalk mixture production hydrocarbon ils Download PDFInfo
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- CN108559543A CN108559543A CN201810356084.0A CN201810356084A CN108559543A CN 108559543 A CN108559543 A CN 108559543A CN 201810356084 A CN201810356084 A CN 201810356084A CN 108559543 A CN108559543 A CN 108559543A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1011—Biomass
- C10G2300/1014—Biomass of vegetal origin
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to the techniques that a kind of supercritical water heat treatment waste plastics and stalk mixture produce hydro carbons oil product, the active specy of cracking generation is easy under supercritical water heat condition using the stalk of farmland discarded plant, cause the cracking of plastics macromolecular, without using catalyst, it avoids catalyst and detaches difficult problem with product, meanwhile the component that plant cracking generates also has solvent action, can significantly reduce the viscosity of plastic cracking oil.Supercritical water not only can be by serving as solvent and dispersant to avoid system coking during waste plastic cracking, moreover it is possible to which the degree of unsaturation that plastic cracking product is reduced by the hydrogen migration effect of its own improves the stability of product.This method comprehensively utilizes waste plastic and farmland waste straw is raw material, and at low cost, operation is simple, does not need hydrogen source, does not need catalyst, hydrocarbon ils high income is environmentally safe.
Description
Technical field
The present invention relates to the techniques that a kind of supercritical water heat treatment waste plastics and stalk mixture produce hydro carbons oil product, belong to
The solid waste in resource recycling field handles and biomass energy source domain.
Background technology
Discarded plastic products have become a kind of chief city's solid waste, and wherein polyolefin waste plastics (such as PE, PP, PS) accounts for
Ratio is more than 80%.Since plastics are difficult to degrade in nature for a long time, finding one kind can make its recycling processing useless
Abandon the continuity that plastic processes are related to the development and civilization of the mankind.With the technological means production such as mechanical processing or physical chemical modification regeneration
Regenerated plastics product performance it is poor, can only downshift use.And waste plastics is converted to fluid oil by means such as pyrolysis
It is then a kind of effective way that technics of reclaim of plastic waste utilizes.
Patent CN106520174 discloses a kind of method that waste polyolefin plastics catalysis pyrolysis prepares aromatic hydrocarbons.This method with
Niobic acid is catalyst, and nitrogen is carrier gas, by polyolefin plastics rapid cleavage synthetic fluid aromatic hydrocarbons in catalytic pyrolysis reaction device.
Patent CN107191950 discloses a kind of waste plastics suspensoid catalytic cracking and catalysis oxidation flameless combustion process.It should
Method is first to carry out homogenization modification to waste plastic with liquid catalytic pyrolysis combustion adjuvant, later in dry cement production line system
Dore furnace in be cracked at a temperature of 850 DEG C~1200 DEG C, and using cracked oil as the fuel of cement production process.
Patent CN107446610 discloses a kind of method handled dedicated for plastics industryization in sorting rubbish.The party
Method is that first waste plastic is sent in liquefaction kettle at 350 DEG C to carry out liquefaction processing, and the plastics after liquefaction are sent to cracking later
Cracking reaction is carried out in kettle.
Patent CN107434979 discloses a kind of waste plastic oil-refining method, and this method is first by waste plastic at 350 DEG C
It is mixed with antichlor and solvent naphtha, the miscella for removing chloride and antichlor is driven into next reaction kettle carries out later
Catalytic cracking reaction.
China is large agricultural country, generates a large amount of farmland waste straw every year, and traditional burning disposal will produce a large amount of harmful
Gaseous contamination environment is not only to have met circular economy concept but also avoided environment if converting it into biomass oil product and being used
The two-win approach of pollution.
Patent CN102618312 discloses a kind of method that biomass prepares fuel oil with waste plastics copyrolysis, is that will give birth to
Substance is uniformly mixed with waste plastics, is placed in cracking reactor, and heating starts pyrolytic reaction.Gas enters essence caused by pyrolysis
Reaction tower processed carries out catalytic reforming, and the product liquid after modification obtains the fuel oil of different fractions after rectifying, generation it is flammable
Property gas and residue return cracking reactor in burning as auxiliary thermal source utilize.Biomass includes aquatile matter, agricultural life
It includes PP, HDPE, LDPE to produce waste and production of forestry waste, waste plastics.The pyrolysis needs to use catalyst, there is catalysis
Agent detaches difficult problem with residue.
Patent CN106433733 discloses a kind of device and method of stalk and cracking waste plastics production liquid fuel.The party
Method be by stalk with waste plastic particles through low temperature (100 DEG C~150 DEG C) pre-heating system preheating after, Ni/HZSM-5 is added thereto
Or Ni/HZSM-22 is then fed into high temperature (500 DEG C) cracking system and is cracked, the gas of generation enters solid and gas as catalyst
Piece-rate system, carbon residue can be retained down, and volatilization gas enters condensate recovery system, be liquid combustion after condensable gas cooling
Material, non-condensable gas will import low-temperature preheating system by recovery tube.Wherein the mass ratio of the stalk and waste plastics is (1:
5)~(5:1), the additive amount of catalyst is the 5%~20% of stalk and waste plastics gross weight.Although this method is using stalk and gives up
Plastics are total to the yield and quality that thermal cracking improves liquid fuel, but this method needs to use solid catalyst, cracks generation
Coke is easy to keep catalyst inactivation, operation cycle short, it is difficult to industrialize.
Invention content
The present invention provides a kind of techniques that waste plastics and stalk are heat-treated production hydrocarbon ils with supercritical water jointly.This hair
Bright purpose is, is easy the active specy of cracking generation under supercritical water heat condition using the stalk of farmland discarded plant,
Cause the cracking of plastics macromolecular, do not use catalyst, avoids catalyst and detach difficult problem with product, meanwhile, plant
Cracking the component generated also has solvent action, can significantly reduce the viscosity of plastic cracking oil.Supercritical water is split in waste plastic
It not only can be by serving as solvent and dispersant to avoid system coking during solution, moreover it is possible to be made by the hydrogen migration of its own
With the degree of unsaturation for reducing plastic cracking product, the stability of product is improved.This method comprehensively utilizes waste plastic and farmland is useless
Stalk is raw material, at low cost, and operation is simple, does not need hydrogen source, does not need catalyst, hydrocarbon ils high income is environmentally safe.
A kind of technique of supercritical water heat treatment waste plastics and stalk mixture production hydrocarbon ils, includes the following steps：
1) waste plastics and straw plant are crushed；
2) waste plastics of crushing and straw plant are mixed to get mixed raw material according to mass ratio 0.1~10: 1, by institute
The mixed raw material stated and water are mixed into slurry material, and the mass ratio of water and mixed raw material is 0.5~2: 1；
3) the slurry material is added in reactor, seals reactor；
4) heating response device, the first step are heated to 200~380 DEG C in two steps, maintain constant temperature 5~30 minutes, second step liter
Temperature makes reaction carry out 10~40 minutes at a constant temperature to 400~430 DEG C, and the pressure in reactor is spontaneous pressure；
5) give off fluid mixture to condenser from reactor, make the mixture by heat exchange unit be cooled to 20 DEG C with
Under, condensate liquid is collected, which is oil water mixture；
6) oil is detached by centrifugation or stratification with water, obtains supercritical water heat treatment waste plastics and stalk mixing
The hydrocarbon ils that object cracking generates.
The waste plastics includes：The materials such as polyethylene (PE), polypropylene (PP), polystyrene (PS), makrolon (PC)
Plastics, the farmland waste straw includes corncob, cornstalk, sorghum stalk, Sunflower Stalk, straw or wheat straw.
Preferred 250~310 DEG C of first stage reaction temperature, 10~20 minutes reaction time.
Preferred 410~420 DEG C of second stage reaction temperature, 20~30 minutes reaction time.
It is preferred that the mass ratio of plastics and stalk is 1~5: 1
It is preferred that the mass ratio of water and the crushing plastics and mixed stalk raw material is 1~1.5: 1.
The reactor is shell and tube reactor, and the tubulation arrangement form in reactor is according to conventional tubular heat exchanger
Tubulation is arranged, and in the tube side of shell and tube reactor supercritical water heat scission reaction occurs for the slurry material, generates hydrocarbon ils and water
Mixture, the shell side of shell and tube reactor is passed through heat medium, and one end of reactor is connect by valve with slurry delivery pump,
The other end of reactor is connected by valve with heat exchange unit, and heat exchange unit is connected with phase separator.
The advantageous effect of the technique of supercritical water heat treatment waste plastics and stalk mixture production hydrocarbon ils provided by the invention
For：Supercritical water environment can inhibit cracking system coking, reduce the generation of toxic and harmful gas；Stalk is in supercritical water environment
In decomposite bioactive molecule, the cracking of plastics macromolecular can be promoted, improve the yield of cracked oil, reduce the glutinous of cracking hydrocarbon ils
Degree, increases its mobility.Plastics and stalk mixture supercritical water thermal cracking products are mainly saturated hydrocarbons and aromatic hydrocarbons, and unsaturated
The content of hydrocarbon and oxygenatedchemicals is very low, and oily stability is good.The technology is simple, easily controllable, need not use hydrogen and
Hydrogen supply agent does not need catalyst, without dilution raw material, moreover it is possible to solve the process problem of farmland waste straw, energy conservation and environmental protection.
Description of the drawings
Fig. 1 tubular reaction devices；
Wherein：1- shell and tube reactors, 2- temperature monitors, 3- pressure gauges, 4- explosion-proof valves, 5- screw pumps, 6-
Raw material mixing channel, 7- heat exchange units, 8- phase separators, 9- gaseous products storage tank, 10- product liquids storage tank, 11- residue oils
Storage tank, 12- feeding lines valve, 13- clean spare mouth valve, 14- dischargings pipeline valve, 15- gas phases extraction pipeline valve,
16- liquid phases produce pipeline valve, 17- residual oil extraction pipeline valve, 18- heating medium inlets, 19- Crude product inputs, and 20- is anti-
Answer device insulating layer.
Specific implementation mode
The present invention will be further described below by way of examples, and its object is to be better understood from present disclosure
The protection domain being not intended to limit the present invention.
Embodiment 1
The present embodiment uses reaction unit shown in FIG. 1, the device to connect charging by horizontal positioned shell and tube reactor 1
Pump 5, heat exchange unit 7, phase separator 8, gas reservoir 9, wet tank 10 and residue oil tank 11 are formed.The reactor
Long 60cm, diameter 12cm, reactor is interior to be arranged 7 reaction tubes, reaction tube diameter 2cm.One end of reactor by valve 12 with
Screw pump 5 is connected, and the other end of reactor is connected by valve 14 with heat exchange unit 7, heat exchange unit and gas-liquid separator 8
It is connected.
Clear PE pipe and corncob are crushed, the plastics of crushing and corncob are mixed to get according to mass ratio 5: 1
The mixed raw material of crushing and distilled water are mixed into slurry material by mixed raw material in raw material mixing channel 6, water and mixed raw material
Mass ratio is 1.5: 1.The slurry material is sent in the tube side of reactor 1 with screw pump 5, seals reactor.It is reacting
The shell side cycle fused salt of device gives reaction tube heat temperature raising, and heating response device, the first step are heated to 300 DEG C in two steps, in the temperature
Lower maintenance constant temperature 10 minutes, second step are warming up to 410 DEG C, and reaction carries out 30 minutes, and the pressure in reactor tubulation is spontaneous pressure.
Rapid Open valve 14 after reaction goes out fluid mixture using the pressure quick drain of inside reactor, and the mixture is logical
Piping valve 14 is cooled to 20 DEG C into heat exchange unit 7, subsequently into 8 isolated oil water mixture lime set of phase separator,
It collects in wet tank 10, gas collection will not coagulated in gas reservoir 9, residue oil is collected in residue oil tank 11.It is logical
It crosses centrifugation and condensate liquid is separated into oil phase and water phase, oil phase is that supercritical water is heat-treated waste plastics and the cracking of stalk mixture generates
Hydrocarbon ils.Hydrocarbon ils yield is 88.61%, residue oil 5.72%, gas 5.67%.Gas mainly includes the chain hydrocarbon of 3~carbon of carbon 5.
The viscosity and race for analyzing hydrocarbon oil product form, and result is：Its viscosity 47cP (50 DEG C), saturated hydrocarbons 63.40wt%, aromatic hydrocarbons
30.47wt%, alkene 4.67wt%, oxygen-containing organic compound 1.46wt%.
Embodiment 2
The reaction unit that the present embodiment uses is the same as embodiment 1.PP films and maize straw are crushed, by the plastics of crushing
It is mixed to get mixed raw material according to mass ratio 1: 1 with maize straw, by the mixed raw material of crushing and distilled water in raw material mixing channel 6
In be mixed into slurry material, the mass ratio of water and mixed raw material is 1: 1.The slurry material is sent to reaction with screw pump 5
In the tube side of device 1, reactor is sealed.Reaction tube heat temperature raising is given in the shell side cycle fused salt of reactor, heating reaction in two steps
Device, the first step are heated to 250 DEG C, maintain constant temperature 20 minutes, and second step is warming up to 420 DEG C, and reaction carries out 20 minutes, reactor row
Pressure in pipe is spontaneous pressure.Rapid Open valve 14 after reaction goes out stream using the pressure quick drain of inside reactor
Body mixture, the mixture are cooled to 20 DEG C into heat exchange unit 7 by pipeline valve 14, are detached subsequently into phase separator 8
Oil water mixture lime set is obtained, collects in wet tank 10, gas collection will not coagulated in gas reservoir 9, residue oil is collected
In residue oil tank 11.Condensate liquid is separated into oil phase and water phase by centrifugation, oil phase is that supercritical water is heat-treated waste plastics
The hydrocarbon ils generated with the cracking of stalk mixture.Hydrocarbon ils yield is 89.69%, residue oil 6.15%, gas 4.16%.Gas is main
Include the chain hydrocarbon of 3~carbon of carbon 5.The viscosity and race for analyzing hydrocarbon oil product form, and result is：Its viscosity 50cP (50 DEG C), saturated hydrocarbons
62.05wt%, aromatic hydrocarbons 31.17wt%, alkene 5.53wt%, oxygen-containing organic compound 1.25wt%.
Embodiment 3
The reaction unit that the present embodiment uses is the same as embodiment 1.Transparent PS cutlery boxs and broomcorn straw are crushed, will be crushed
Plastics and broomcorn straw be mixed to get mixed raw material according to mass ratio 1: 5, by the mixed raw material of crushing and distilled water in raw material
It is mixed into slurry material in mixing channel 6, the mass ratio of water and mixed raw material is 1: 2.The slurry material is sent into screw pump 5
Into the tube side of reactor 1, reactor is sealed.Reaction tube heat temperature raising is given in the shell side cycle fused salt of reactor, is added in two steps
Thermal reactor, the first step are heated to 200 DEG C, remain 30 minutes permanent, and second step is warming up to 430 DEG C, and reaction carries out 10 minutes, reaction
Pressure in device tubulation is spontaneous pressure.Rapid Open valve 14 after reaction utilizes the pressure quick drain of inside reactor
Go out fluid mixture, which is cooled to 20 DEG C by pipeline valve 14 into heat exchange unit 7, subsequently into phase separator 8
Isolated oil water mixture lime set collects in wet tank 10, will not coagulate gas collection in gas reservoir 9, residue oil
It collects in residue oil tank 11.Condensate liquid is separated into oil phase and water phase by centrifugation, oil phase is that supercritical water heat treatment is useless
The hydrocarbon ils that plastics and the cracking of stalk mixture generate.Hydrocarbon ils yield is 86.82%, residue oil 7.31%, gas 5.87%.Analysis
The viscosity of hydrocarbon oil product and race's composition, result are：Its viscosity 95cP (50 DEG C), saturated hydrocarbons 48.99wt%, aromatic hydrocarbons 34.30wt%,
Alkene 2.92wt%, oxygen-containing organic compound 13.79wt%.
Embodiment 4
The reaction unit that the present embodiment uses is the same as embodiment 1.Colourless PC cellular boards and sunflower stalk are crushed, by powder
Broken plastics and sunflower stalk are mixed to get mixed raw material according to mass ratio 10: 1, by the mixed raw material of crushing and distilled water in original
Expect to be mixed into slurry material in mixing channel 6, the mass ratio of water and mixed raw material is 2: 1.The slurry material is sent with screw pump 5
Enter into the tube side of reactor 1, seals reactor.Reaction tube heat temperature raising is given in the shell side cycle fused salt of reactor, in two steps
Heating response device, the first step are heated to 350 DEG C, and constant temperature for 5 minutes for maintenance, and second step is warming up to 400 DEG C, and reaction carries out 40 minutes,
Pressure in reactor tubulation is spontaneous pressure.Rapid Open valve 14 after reaction, it is quick using the pressure of inside reactor
Fluid mixture is given off, which is cooled to 20 DEG C by pipeline valve 14 into heat exchange unit 7, subsequently into phase separation
8 isolated oil water mixture lime set of device collects in wet tank 10, will not coagulate gas collection in gas reservoir 9, residue
Oil is collected in residue oil tank 11.Condensate liquid is separated into oil phase and water phase by centrifugation, oil phase is heat-treated for supercritical water
The hydrocarbon ils that waste plastics and the cracking of stalk mixture generate.Hydrocarbon ils yield is 90.75%, residue oil 3.95%, gas 5.30%.Point
Gassing body composition is mainly the chain hydrocarbon of 3~carbon of carbon 5.The viscosity and race for analyzing hydrocarbon oil product form, and result is：Its viscosity 84cP
(50 DEG C), saturated hydrocarbons 59.26wt%, aromatic hydrocarbons 28.73wt%, alkene 2.76wt%, oxygen-containing organic compound 9.25wt%.
Claims (7)
1. the technique of a kind of supercritical water heat treatment waste plastics and stalk mixture production hydrocarbon ils, it is characterized in that including following step
Suddenly：
1) waste plastics and straw plant are crushed；
2) waste plastics of crushing and straw plant are mixed to get mixed raw material according to mass ratio 0.1~10: 1, mixing is former
Material is mixed into slurry material with water, and the mass ratio of water and mixed raw material is 0.5~2: 1；
3) slurry material is added in reactor, seals reactor；
4) heating response device, the first step are heated to 200~380 DEG C in two steps, maintain constant temperature 5~30 minutes, and second step is warming up to
400~430 DEG C, reaction is made to carry out at a constant temperature 10~40 minutes, the pressure in reactor is spontaneous pressure；
5) give off fluid mixture to condenser from reactor, make the mixture by heat exchange unit be cooled to 20 DEG C hereinafter,
Condensate liquid is collected, which is oil water mixture；
6) oil is detached by centrifugation or stratification with water, obtains supercritical water heat treatment waste plastics and stalk mixture is split
Solve the hydrocarbon ils generated.
2. technique as described in claim 1, it is characterized in that the waste plastics includes：Polyethylene (PE), polypropylene (PP), polyphenyl
The plastics of the material of ethylene (PS) or makrolon (PC)；The farmland waste straw includes corncob, cornstalk, sorghum stalk, certain herbaceous plants with big flowers
Flower stalk, straw or wheat straw.
3. technique as described in claim 1, it is characterized in that 250~310 DEG C of first step reaction temperature, 10~20 points of reaction time
Clock.
4. technique as described in claim 1, it is characterized in that 410~420 DEG C of second step reaction temperature, 20~30 points of reaction time
Clock.
5. technique as described in claim 1, it is characterized in that the mass ratio of plastics and stalk is 1~5: 1.
6. technique as described in claim 1, it is characterized in that water be 1 with the mass ratio for crushing plastics and mixed stalk raw material~
1.5∶1。
7. technique as described in claim 1, it is characterized in that reactor is shell and tube reactor, the tubulation arrangement shape in reactor
In the tube side of shell and tube reactor supercritical water thermal cracking occurs for tubulation arrangement of the formula according to conventional tubular heat exchanger, slurry material
Reaction generates the mixture of hydrocarbon ils and water, and the shell side of shell and tube reactor is passed through heat medium, and one end of reactor passes through valve
It is connect with slurry delivery pump, the other end of reactor is connected by valve with heat exchange unit, heat exchange unit and phase separator phase
Even.
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| CN201810356084.0A CN108559543A (en) | 2018-04-19 | 2018-04-19 | The technique that supercritical water is heat-treated waste plastics and stalk mixture production hydrocarbon ils |
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Cited By (4)
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| CN110078075A (en) * | 2019-06-06 | 2019-08-02 | 上海纳米技术及应用国家工程研究中心有限公司 | A method of utilizing supercritical water hot preparation porous carbon materials |
| CN112662417A (en) * | 2020-12-08 | 2021-04-16 | 杨清萍 | Continuous production system and method for preparing liquid fuel by directly liquefying biomass |
| CN115197735A (en) * | 2022-08-02 | 2022-10-18 | 中国矿业大学 | Method for preparing oil from superheated steam type efficient liquefied plastic garbage |
| CN117126680A (en) * | 2023-10-26 | 2023-11-28 | 江苏江天新材料科技有限公司 | Process and device for preparing hydrocarbon oil by supercritical water and pyrolysis treatment of waste plastics |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078075A (en) * | 2019-06-06 | 2019-08-02 | 上海纳米技术及应用国家工程研究中心有限公司 | A method of utilizing supercritical water hot preparation porous carbon materials |
| CN112662417A (en) * | 2020-12-08 | 2021-04-16 | 杨清萍 | Continuous production system and method for preparing liquid fuel by directly liquefying biomass |
| CN115197735A (en) * | 2022-08-02 | 2022-10-18 | 中国矿业大学 | Method for preparing oil from superheated steam type efficient liquefied plastic garbage |
| CN117126680A (en) * | 2023-10-26 | 2023-11-28 | 江苏江天新材料科技有限公司 | Process and device for preparing hydrocarbon oil by supercritical water and pyrolysis treatment of waste plastics |
| CN117126680B (en) * | 2023-10-26 | 2024-01-26 | 江苏江天新材料科技有限公司 | Process and device for preparing hydrocarbon oil by supercritical water and pyrolysis treatment of waste plastics |
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