CN1114675A - Production of raw oil of liquefied gas gasoline, diesel oil and lubricating oil base oil by using two-section joint cracking process of waste plastics - Google Patents
Production of raw oil of liquefied gas gasoline, diesel oil and lubricating oil base oil by using two-section joint cracking process of waste plastics Download PDFInfo
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- CN1114675A CN1114675A CN94110379A CN94110379A CN1114675A CN 1114675 A CN1114675 A CN 1114675A CN 94110379 A CN94110379 A CN 94110379A CN 94110379 A CN94110379 A CN 94110379A CN 1114675 A CN1114675 A CN 1114675A
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- oil
- liquefied gas
- cracking
- gasoline
- diesel oil
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The present invention relates to a method for preparing liquefied gas, gasoline, diesel oil and basic oil of lubricating oil from waste plastics or waste plastics in which other type oil is blended by a two-stage combined cracking process. and after the above-mentioned material is passed through first stage cracking treatment, the wax oil obtained from first stage cracking treatment is passed though second-stage pressure cracking treatment in the absence of catalyst, so that it can be completely converted to liquefied gas, gasoline and diesel oil. Said invention has the following advantages: the solidification point of diesel oil can be randomly regulated, liquefied gas can be directly obtained and their yields can be regulated.
Description
The present invention relates to waste plastics recovery and utilize method, particularly utilize the method for the stock oil of plastic waste system liquefied gas, gasoline, diesel oil and lubricant base.
In recent years, along with the widespread use of plastics, waste or used plastics also rolls up thereupon, can not degrade at occurring in nature because of it, and the processing of waste or used plastics has become urgent problem.At present, the Treatment of Waste Plastics method generally is to reclaim to be processed as the inferior reworked material of matter, also is processed as painting.How the Treatment of Waste Plastics new technology is provided, plastic waste processed into the higher product of using value? the employing Deep Catalytic Cracking process produces gasoline and diesel oil is a kind of new technology of development in recent years.This technology can not be eliminated wax oil fully, and catalyzer needs timing regeneration, and is cumbersome.And, the fraction of diesel oil broad of collecting, color is darker, and stability is also relatively poor.The ratio of gasoline, diesel oil output is more fixing, can not adjust.
The objective of the invention is for overcoming above-mentioned shortcoming, propose a kind ofly plastic waste or plastic waste are mixed its again to plant oil, make liquefied gas, gasoline, diesel oil, and can be used as the stock oil of lubricant base.Can also arbitrarily adjust the diesel oil zero pour, directly obtain the productive rate of liquefied gas and adjustment gasoline, diesel oil and liquefied gas.
The used plastic waste of the present invention can be various not chloride plastics, as waste polyethylene, waste polypropylene, useless vinylbenzene etc., first section be plastic waste 300 ℃ of normal pressures--600 ℃ of cracking, output gas, gasoline, diesel oil and part heavy oil (wax oil).The wax oil quantum of output accounts for the 10--30% of cracking feed, then with wax oil under 0.1--2.0MPa pressure, 300--450 ℃ is carried out second pyrolysis.As long as suitably the second pyrolysis product of oil gas temperature (making heavy component the return cracking) output of control second pyrolysis still can be fully waxy oil not.
The wax oil that goes to make second pyrolysis is not limit the fraction width.If wish atmospheric cracking output low-freezing diesel oil, can reduce atmospheric tower diesel oil and distillate a mouthful temperature, can overcharge some wax oils and remove second pyrolysis this moment; If wish an output gasoline, also fraction of diesel oil all can be pressed in the wax oil mass production gas and gasoline.Can also the direct production liquefied gas.In the second pyrolysis gas except that containing C1, C2 hydrocarbon, the C3, the C4 hydrocarbon that also contain 30--50%, certain pressure (cracking pressure) is arranged when going out still because of it, during with its direct condensation, contained C3, C4 will be dissolved in the oil, go into to tell behind the oil-gas separator gas phase (dry gas, mainly contain C1, C2 hydrocarbon, correct control pressure makes into the fuel gas pipe network).The liquefied gas tower is sent in the oil phase heating that will go out oil-gas separator, makes tower top temperature control steam temperature (being generally 30--60 ℃) with the corresponding liquefied gas of pressure, liquefied gas can be steamed, and condensation, tinning become civil liquefied gas.With the difference of control condition, liquefied gas yield accounts for the charging wax oil at 6--12%, as desires voluminous liquefied gas and can overcharge the second pyrolysis that wax oil carries out the degree of depth.
Also once with oil wax oil (heavy oil) by a certain percentage with plastic waste heavy oil fusion cracking, process can normally be carried out, but reduces with the increase rate of cleavage of blended ratio, keeping slightly as desire, fast speed need increase cracking temperature.
Adopt one section complete pressure cracking technology, be about to plastic waste and carry out the pressure cracking, need to strengthen do not have other problem on the technology the clear still operation except that raw material contains ash directly into still.
The present invention has following advantage: the two-section joint cracking technology that adopts atmospheric cracking and wax oil second pyrolysis, maybe when adopting one section complete cracking, can eliminate heavy oil fully, make the light oil products volume increase, when producing gasoline and plurality of specifications diesel oil, can also receive liquefied gas, and product yield is adjusted within the specific limits, make production decision have handiness.
Combined process flowchart text method principle of the present invention.
Plastic waste is sent in the atmospheric cracking still 1, and still heats outward, and splitting gas enters atmospheric fractional tower 3 through deliming post 2.Cat head output gas is gone into separator 6 after condenser 5 condensations, tell gas and go into the fuel gas pipe network, and liquid phase is atmospheric cracking gained vapour, diesel oil.The wax oil of output is gone into tundish 4 at the bottom of the atmospheric tower.With pump wax oil is extracted out from tundish, boost to about 0.8MPa, send into pressure cracking still 7, still heats outward, and splitting gas is controlled cat head homo(io)thermism (by certain production purpose regulation) through separation column 8, remove wax oil and return cracking, output gas is gone into Pressure separator 10 after condenser 9 is cold, tell dry gas (main C1, the C2 of containing), and rationally control pressure makes into the fuel gas pipe network.Oil phase in the separator 10 is vapour, the diesel oil that contains liquefied gas, this oil phase is drawn and heat to make to enter liquefied gas tower 12, and the liquefied gas component is steamed, and after condenser 11 was cold, cat head obtained liquefied gas and goes into liquified gas container.Vapour, the diesel oil of cracking output obtain at the bottom of the tower pressurizeing.Vapour, the diesel oil of normal pressure with the pressurization output is merged, send to and produce lubricant base.When not desiring to produce lubricant base, should adopt usual method that gasoline and diesel oil are received out separately.
Two sections cracking products obtained therefrom yields see Table 1:
Table 1
| Product yield % | Diesel oil zero pour ℃ | Remarks | |||||
| Gas | Liquefied gas | Gasoline | Diesel oil | Loss | |||
| One section cracking | ????20 | ????0 | ???38 | ???40 | ????2 | ???-2 | |
| Two sections cracking | ????22 | ????2 | ???34 | ??39.7 | ????2.3 | ??-14 | An amount of diesel oil |
| Three sections cracking | ????25 | ????3 | ???54 | ???15 | ????3 | ?∠-40 | High-yield diesel oil |
The gas composition of pressurization cracking output sees Table 2: table 2
Claims (4)
1, a kind of method of the stock oil with plastic waste system liquefied gas, gasoline, diesel oil and lubricating oil is characterized in that: adopt two-section joint cracking technology, first section plastic waste atmospheric cracking and second section wax oil pressurization cracking.
2, a kind of method of the stock oil with plastic waste system liquefied gas, gasoline, diesel oil and lubricating oil is characterized in that: adopt one section complete cracking technology of pressure.
3, the method for the stock oil with plastic waste system liquefied gas, gasoline, diesel oil and lubricating oil as claimed in claim 1 or 2 is characterized in that: plastic waste can mix its again and plant oil.
4, the method for the stock oil with plastic waste system liquefied gas, gasoline, diesel oil and lubricating oil as claimed in claim 1, it is characterized in that: first section cracking temperature is at 300--600 ℃, and second section cracking pressure is 0.1--2.0MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110379A CN1114675A (en) | 1994-07-06 | 1994-07-06 | Production of raw oil of liquefied gas gasoline, diesel oil and lubricating oil base oil by using two-section joint cracking process of waste plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110379A CN1114675A (en) | 1994-07-06 | 1994-07-06 | Production of raw oil of liquefied gas gasoline, diesel oil and lubricating oil base oil by using two-section joint cracking process of waste plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1114675A true CN1114675A (en) | 1996-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94110379A Pending CN1114675A (en) | 1994-07-06 | 1994-07-06 | Production of raw oil of liquefied gas gasoline, diesel oil and lubricating oil base oil by using two-section joint cracking process of waste plastics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1114675A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6605209B2 (en) * | 2001-11-13 | 2003-08-12 | Green Formosa Energy Technology Co., Ltd. | Non-biodegradable waste pyrolysis system with selective residence-time reactor by recycle of self-sustaining heat-conservation medium |
| CN101260309B (en) * | 2008-04-28 | 2011-03-09 | 同济大学 | Continuous catalytic cracking method for producing fuel oil from mixed waste plastic |
| CN103254922A (en) * | 2013-04-17 | 2013-08-21 | 西安交通大学 | Two-stage coal direct liquefaction method and system |
| CN106590713A (en) * | 2016-11-28 | 2017-04-26 | 玉门市云华再生资源有限责任公司 | Waste tire pyrolysis recycling treatment system |
-
1994
- 1994-07-06 CN CN94110379A patent/CN1114675A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6605209B2 (en) * | 2001-11-13 | 2003-08-12 | Green Formosa Energy Technology Co., Ltd. | Non-biodegradable waste pyrolysis system with selective residence-time reactor by recycle of self-sustaining heat-conservation medium |
| CN101260309B (en) * | 2008-04-28 | 2011-03-09 | 同济大学 | Continuous catalytic cracking method for producing fuel oil from mixed waste plastic |
| CN103254922A (en) * | 2013-04-17 | 2013-08-21 | 西安交通大学 | Two-stage coal direct liquefaction method and system |
| CN106590713A (en) * | 2016-11-28 | 2017-04-26 | 玉门市云华再生资源有限责任公司 | Waste tire pyrolysis recycling treatment system |
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