CN102146010A - Process for producing low carbon olefin and arene parallel cogeneration gasoline by using methanol as raw material - Google Patents
Process for producing low carbon olefin and arene parallel cogeneration gasoline by using methanol as raw material Download PDFInfo
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- CN102146010A CN102146010A CN2010101080081A CN201010108008A CN102146010A CN 102146010 A CN102146010 A CN 102146010A CN 2010101080081 A CN2010101080081 A CN 2010101080081A CN 201010108008 A CN201010108008 A CN 201010108008A CN 102146010 A CN102146010 A CN 102146010A
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- methyl alcohol
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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
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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
- Y02P30/40—Ethylene production
Abstract
The invention discloses a process for producing low carbon olefin and arene parallel cogeneration gasoline by using methanol as a raw material. In the process, the methanol is used as the raw material and a molecular sieve catalyst is adopted to produce the low carbon olefin and arene parallel cogeneration gasoline by a methanol alkylation reaction and aromatization. In the process, the coal-based methanol is used as the raw material and can replace the conventional petroleum raw material to cogenerate a basis organic chemical raw material, and thus, the dependence degree of the conventional petrochemical industry on the petroleum can be reduced. Meanwhile, the process is also beneficial for reducing the foreign dependence degree of national petroleum, the strategic safety of energy and resources is improved, the production process of the process has low discharge, low pollution and low energy consumption, the requirements on green and environment protection are met, and the process has the advantages of low production cost and strong market competitiveness.
Description
Technical field
The invention belongs to chemical production technical field, relating to a kind of is purpose with efficient carbon utilisation rate, and take catalytic reaction engineering means and method more efficiently, utilize molecular designing and modern project technology to implement low carbon technique integrated innovation to substitute the technology of petrochemical technology, specifically relating to a kind of is the processing method of raw material production alkane, alkene and aromatic hydrocarbons with methyl alcohol.
Background technology
Current, in the back petroleum times that global petroleum resources can't satisfy rapid economic development fully, non-oil preparing light olefins from methanol technology is just arisen at the historic moment, and MTO, MTP, NMTP, DMTO, JMTO have bigger breakthrough.China is for the energy security of country, and National Development and Reform Committee has ratified coal system oil direct method and indirect method demonstration, in succession to attempt to substitute petroleum hydrocarbon transportation and energy's deficiency in nearly 10 years; National Development and Reform Committee has ratified a few cover coal-based methanols again successively and has prepared large-scale pilot projects such as alkene, substitutes the part petrochemical complex to attempt producing polyolefine.Though these demonstrations are the tachnical storage that country has born coal-based substitute energy, because investment is huge, technology-intensive, have only large-scale stateowned enterprise strongly to bear with ability, this just makes that the oil replacement strategic development of China is slower.
Summary of the invention
In order to address the above problem, the invention provides a kind of with methyl alcohol be raw material production low-carbon alkene and aromatic hydrocarbons parallel connection steam oil novel process, this technology with coal-based methanol as raw material, the combination producing low-carbon alkene, aromatic hydrocarbons and gasoline, can substitute the basic Organic Chemicals of traditional petroleum coproduction, therefore can reduce the degree of dependence of traditional petrochemical complex industry for oil, simultaneously also help reducing the external interdependency of China's oil, improve the energy, the strategic security of resource, and the production process low emission of this technology, the low pollution, less energy-consumption, meet requirements of green environmental protection, and it is low to have a production cost, the advantage that the market competitiveness is strong.
The present invention for the technical scheme that solves its technical problem and adopt is:
A kind of with methyl alcohol be raw material production low-carbon alkene and aromatic hydrocarbons parallel connection steam oil technology, be raw material with methyl alcohol and adopt molecular sieve catalyst to produce low-carbon alkene and the aromatic hydrocarbons parallel connection oil that steams through methyl alcohol alkylation reaction and aromatization, wherein, described aromatization is to obtain the mix products of alkene, aromatic hydrocarbons and alkane with the further aromizing of methyl alcohol alkylation reaction product, described mix products obtains low-carbon alkene, aromatic hydrocarbons and gasoline through separating further to produce, comprise ethene, propylene and butylene in the described low-carbon alkene, comprise benzene, toluene and dimethylbenzene in the described aromatic hydrocarbons.
Described methyl alcohol alkylation reaction and described aromatization all adopt the molecular sieve carried type catalyzer that utilizes the molecular designing principle design according to purpose reaction requirement, the molecular sieve carried type catalyzer that wherein said aromatization adopted has the highly selective to aromatic hydrocarbons, especially p-Xylol is had higher yield.Methyl alcohol alkylation reaction and aromatization all adopt the ZXM molecular sieve catalyst.
According to the requirement of products scheme, to mix products take simple low deep cooling, oil to absorb, PSA is refining, at least a method in the extracting rectifying is purified separation.
The reactor of methyl alcohol alkylation reaction and aromatization can be selected various types of fixed-bed reactor for use.
Further technical scheme of the present invention is:
The product of methyl alcohol alkylation reaction can all directly be sent into aromatization: material benzenemethanol is after methanol pump, gasification enters in the methyl alcohol alkylation reaction device, control pressure 0.01～0.5MPa, 180～600 ℃ of temperature of reaction, deliver in the aromatization reactor again, control aromatization pressure 0.01～0.5MPa, 180～600 ℃ of temperature of reaction, final reacting product cools off via condensation, vapor-liquid separation, gas-phase product can be synthetic natural gas or produces liquefaction vapour, and liquid phase obtains benzene,toluene,xylene and carbon nine heavy aromaticss by separation technology such as rectifying.
The product of methyl alcohol alkylation reaction can be after separating, extraction obtains low-carbon alkene, the part low-carbon alkene is sent into aromatization: vaporization enters methyl alcohol alkylation reaction device after the methanol pump, control 0.1～0.5MPa, 180～600 ℃ of temperature of reaction, reaction product is after gas-liquid separation, liquid is gasoline, gas is through being divided into carbon one and carbon two, carbon three, carbon four, carbon five after the fractionation, wherein in carbon one and the carbon two ethylene content greater than 90%, propylene content is greater than 97% in the carbon three, and iso-butylene content is greater than 35% in the carbon four.Carbon four and methyl alcohol reaction are entered production MTBE (methyl tertiary butyl ether) reactor, control pressure 0.1～0.5MPa, 40～200 ℃ of temperature of reaction, residue carbon four and carbon five enter aromatization reactor control pressure 0.1～0.5MPa, 180～600 ℃ of temperature, reactant is through cooling condensation, and gas is synthetic natural gas, and liquid generates benzene, toluene and dimethylbenzene through rectifying.
In order to make product be convenient to the production of methanol gasoline additive, can adopt according to molecular designing and be beneficial to the molecular sieve carried type catalyzer of producing iso-butylene, promptly adopt the molecular sieve carried type catalyzer that the iso-butylene in the low-carbon alkene is had highly selective.Also can adopt and be beneficial at least a molecular sieve carried type catalyzer of producing in the aromatic hydrocarbons according to molecular designing.
The invention has the beneficial effects as follows: technology of the present invention is raw material with the coal-based methanol, adopt molecular sieve catalyst to produce low-carbon alkene and the aromatic hydrocarbons parallel connection oil that steams through methyl alcohol alkylation reaction and aromatization, the transformation efficiency of carbon can reach more than 95% and (comprise the alkane in the product in the methyl alcohol, the efficient utilization of alkene and aromatic hydrocarbons), belong to the low carbon technique that efficiently utilizes carbon source, and can be than the benzene mixed (BTX) and the gasoline of expensive isolation technique co-production of high-quality, in view of process conditions gentleness of the present invention, plant condition is not harsh, advantages such as energy consumption and cost are low, technology of the present invention can substitute petroleum base alkene and petroleum benzene fully and prepare various petrochemicals, make coal-based methanol energy substitution petrochemical complex become simple, technology of the present invention also can combine with technologies such as NMTP and JMTO, coupling produces various integrated techniques of distributing rationally flexibly, can be according to different products scheme, by reaction flexibly, the separating technology configuration, low investment, low-cost, low emission, the low pollution and the serial basic chemical raw materials of high benefit ground production.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1: the hydrocarbonylation of 15g methyl alcohol is put into methyl alcohol alkylation reaction device with molecular sieve catalyst, control pressure 0.1～0.5MPa, 180～600 ℃ of temperature, it is 2: 1 that methyl alcohol and water are made into mol ratio, (best 40～30g) are put in the aromatization reactor with molecular sieve catalyst with 50～20g aromizing, per hour advance 30～40ml reactant, one way liquid is received greater than 50% in the liquid of reaction back, total liquid is received greater than 70%, the content of each composition sees the following form 1 in the liquid, and main component is hydrogen, methane and ethane in the gas.
Table 1
Embodiment 2: the hydrocarbonylation of 30g methyl alcohol is put into methyl alcohol alkylation reaction device with molecular sieve catalyst, and 400～500 ℃ of controlled temperature, pressure 0～0.5MPa, pure water mol ratio is 1: 1, liquid air speed 1～2, reaction back gas composition sees the following form 2:
Table 2
After above-mentioned gas separated, carbon four gases are entered into the reaction bed that the MTBE catalyzer is housed, methyl alcohol and iso-butylene mol ratio are 2: 1, carbon four-component such as following table 3:
Table 3
| Butane, Trimethylmethane | 1-butylene, 2-butylene | Iso-butylene |
| 4.5～5.5％ | 50～53％ | 39～42 |
70～200 ℃ of temperature of reaction, pressure 0.15～1.0MPa, reaction back gas composition sees the following form 4:
Table 4
| Methyl alcohol | The C4 component | Iso-butylene |
| 24.1％ | 75.8％ | ＞0.1％ |
Reacted gas is carried out aromatization, enter and the difunctional aromizing of 15g is housed carries out aromatization with molecular sieve catalyst, one way liquid receives 55%, and total liquid receives 70%, and liquid is formed (200 hourly average data) and seen the following form 5:
Table 5
| C5 | Benzene | Toluene | Dimethylbenzene | Carbon nine heavy aromaticss |
| 0.45％ | 18.7％ | 46.5％ | 29.7％ | 4.6％ |
Embodiment 3: example 1 methyl alcohol hydrocarbonylation with molecular sieve catalyst running regeneration after 500 hours, reacted by example 1, and one way liquid yield 60.5%, liquid component (100 hourly average data) sees the following form 6:
Table 6
| Benzene | Toluene | Dimethylbenzene | Carbon nine heavy aromaticss |
| 13.7％ | 48.8％ | 28.1％ | 9.4％ |
Example 4: example 2 methyl alcohol hydrocarbonylations are carried out regenerating in the reactor after 500 hours with the molecular sieve catalyst running, 550～600 ℃ of regeneration temperature controls, control oxygen level 2～18% was with water vapor controlled temperature regeneration 24 hours.React by example 2, react after 200 hours each component content of gas 7 (reacting sampling analysis data after 200 hours) of seeing the following form:
Table 7
Claims (10)
1. one kind is the steam technology of oil of raw material production low-carbon alkene and aromatic hydrocarbons parallel connection with methyl alcohol, it is characterized in that: be raw material with methyl alcohol and adopt molecular sieve catalyst to produce low-carbon alkene and the aromatic hydrocarbons parallel connection oil that steams through methyl alcohol alkylation reaction and aromatization, wherein, described aromatization is to obtain alkene with the further aromizing of methyl alcohol alkylation reaction product, the mix products of aromatic hydrocarbons and alkane, described mix products obtains low-carbon alkene through separating further to produce, aromatic hydrocarbons and gasoline, comprise ethene in the described low-carbon alkene, propylene and butylene comprise benzene in the described aromatic hydrocarbons, toluene and dimethylbenzene.
According to claim 1 described with methyl alcohol be raw material production low-carbon alkene and aromatic hydrocarbons parallel connection steam oil technology, it is characterized in that: the product of methyl alcohol alkylation reaction is all directly sent into aromatization.
3. according to claim 1 is the steam technology of oil of raw material production low-carbon alkene and aromatic hydrocarbons parallel connection with methyl alcohol, and it is characterized in that: the product of methyl alcohol alkylation reaction extracts and obtains low-carbon alkene after separating, and the part low-carbon alkene is sent into aromatization.
According to claim 1 described with methyl alcohol be raw material production low-carbon alkene and aromatic hydrocarbons parallel connection steam oil technology, it is characterized in that: the working pressure of described methyl alcohol alkylation reaction is between 0.01～0.5Mpa, and temperature of reaction is between 180～600 ℃; The working pressure of described aromatization is between 0.01～0.5Mpa, and temperature of reaction is between 180～600 ℃.
5. according to claim 1 is the steam technology of oil of raw material production low-carbon alkene and aromatic hydrocarbons parallel connection with methyl alcohol, and it is characterized in that: described methyl alcohol alkylation reaction and described aromatization all adopt the molecular sieve carried type catalyzer that requires to utilize the molecular designing principle design according to purpose reaction.
According to claim 5 described with methyl alcohol be raw material production low-carbon alkene and aromatic hydrocarbons parallel connection steam oil technology, it is characterized in that: be convenient to the production of methanol gasoline additive in order to make product, adopt according to molecular designing to be beneficial to the molecular sieve carried type catalyzer of producing iso-butylene.
7. according to claim 5 is the steam technology of oil of raw material production low-carbon alkene and aromatic hydrocarbons parallel connection with methyl alcohol, it is characterized in that: adopt according to molecular designing to be beneficial at least a molecular sieve carried type catalyzer of producing in the aromatic hydrocarbons.
According to claim 5 described with methyl alcohol be raw material production low-carbon alkene and aromatic hydrocarbons parallel connection steam oil technology, it is characterized in that: methyl alcohol alkylation reaction and aromatization all adopt the ZXM molecular sieve catalyst.
9. according to claim 1 is the steam technology of oil of raw material production low-carbon alkene and aromatic hydrocarbons parallel connection with methyl alcohol, it is characterized in that: to mix products take low deep cooling, oil to absorb, PSA is refining, at least a method in the extracting rectifying is purified separation.
According to claim 1 described with methyl alcohol be raw material production low-carbon alkene and aromatic hydrocarbons parallel connection steam oil technology, it is characterized in that: the reactor of methyl alcohol alkylation reaction and aromatization is selected fixed-bed reactor for use.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775261A (en) * | 2012-07-23 | 2012-11-14 | 李小燕 | Multifunctional methanol processing method and apparatus |
| CN102875287A (en) * | 2012-09-03 | 2013-01-16 | 李小燕 | Method and device for producing various products with methyl alcohols |
| CN103242884A (en) * | 2013-05-20 | 2013-08-14 | 易高环保能源研究院有限公司 | Process for preparing high-octane high-cleanness gasoline with methanol by using multi-element catalysis method |
| CN103694077A (en) * | 2013-12-03 | 2014-04-02 | 浙江大学 | Reaction technology for production of propylene and coproduction of high-octane value gasoline components |
| CN103865562A (en) * | 2014-02-24 | 2014-06-18 | 中国海洋石油总公司 | Method for preparing gasoline from methanol |
| CN103865564A (en) * | 2014-02-24 | 2014-06-18 | 中国海洋石油总公司 | Integrated method for synthetising gasoline from methyl alcohol or dimethyl ether |
| CN104447157A (en) * | 2014-11-27 | 2015-03-25 | 山西沸石科技有限公司 | Method for preparing aromatic hydrocarbon mixture rich in benzene, methylbenzene and xylene from methanol through light olefin |
| CN104557415A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | System and method for preparing aromatic hydrocarbon and coproducing liquefied gas by converting methanol and/or dimethyl ether |
| CN105016954A (en) * | 2014-04-28 | 2015-11-04 | 中国科学院大连化学物理研究所 | Method for preparing propylene and aromatic hydrocarbon from methyl alcohol or/and dimethyl ether |
| CN105254462A (en) * | 2015-11-03 | 2016-01-20 | 中国石油大学(华东) | Process for producing olefin from methanol and for co-producing gasoline and aromatic hydrocarbon |
| CN107162866A (en) * | 2017-04-19 | 2017-09-15 | 新地能源工程技术有限公司 | A kind of method and device of preparing gasoline by methanol coproduction dimethylbenzene |
| CN109336726A (en) * | 2018-11-29 | 2019-02-15 | 北京惠尔三吉绿色化学科技有限公司 | A kind of technique of carbon four, light oil and coupling between methanol preparing propylene by catalytic cracking ethylene |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775261A (en) * | 2012-07-23 | 2012-11-14 | 李小燕 | Multifunctional methanol processing method and apparatus |
| CN102875287A (en) * | 2012-09-03 | 2013-01-16 | 李小燕 | Method and device for producing various products with methyl alcohols |
| CN103242884A (en) * | 2013-05-20 | 2013-08-14 | 易高环保能源研究院有限公司 | Process for preparing high-octane high-cleanness gasoline with methanol by using multi-element catalysis method |
| CN104557415A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | System and method for preparing aromatic hydrocarbon and coproducing liquefied gas by converting methanol and/or dimethyl ether |
| CN104557415B (en) * | 2013-10-28 | 2016-08-17 | 中国石油化工股份有限公司 | Methanol and/or the system and method for dimethyl ether conversion aromatic hydrocarbons co-production of liquefied gas |
| CN103694077B (en) * | 2013-12-03 | 2015-09-30 | 浙江大学 | A kind of propylene that produces can the reaction process of coproduction high octane gasoline component |
| CN103694077A (en) * | 2013-12-03 | 2014-04-02 | 浙江大学 | Reaction technology for production of propylene and coproduction of high-octane value gasoline components |
| CN103865564A (en) * | 2014-02-24 | 2014-06-18 | 中国海洋石油总公司 | Integrated method for synthetising gasoline from methyl alcohol or dimethyl ether |
| CN103865562A (en) * | 2014-02-24 | 2014-06-18 | 中国海洋石油总公司 | Method for preparing gasoline from methanol |
| CN105016954A (en) * | 2014-04-28 | 2015-11-04 | 中国科学院大连化学物理研究所 | Method for preparing propylene and aromatic hydrocarbon from methyl alcohol or/and dimethyl ether |
| CN105016954B (en) * | 2014-04-28 | 2018-05-08 | 中国科学院大连化学物理研究所 | A kind of methanol or/and dimethyl ether for propylene and aromatic hydrocarbons method |
| CN104447157A (en) * | 2014-11-27 | 2015-03-25 | 山西沸石科技有限公司 | Method for preparing aromatic hydrocarbon mixture rich in benzene, methylbenzene and xylene from methanol through light olefin |
| CN104447157B (en) * | 2014-11-27 | 2016-02-24 | 山西沸石科技有限公司 | A kind of methyl alcohol produces the method for the aromatic hydrocarbons mixture being rich in benzene,toluene,xylene through low-carbon alkene |
| CN105254462A (en) * | 2015-11-03 | 2016-01-20 | 中国石油大学(华东) | Process for producing olefin from methanol and for co-producing gasoline and aromatic hydrocarbon |
| CN105254462B (en) * | 2015-11-03 | 2018-06-29 | 中国石油大学(华东) | A kind of technique of methanol-to-olefins co-production gasoline and aromatic hydrocarbons |
| CN107162866A (en) * | 2017-04-19 | 2017-09-15 | 新地能源工程技术有限公司 | A kind of method and device of preparing gasoline by methanol coproduction dimethylbenzene |
| CN107162866B (en) * | 2017-04-19 | 2020-07-07 | 新地能源工程技术有限公司 | Method and device for co-production of xylene from methanol to gasoline |
| CN109336726A (en) * | 2018-11-29 | 2019-02-15 | 北京惠尔三吉绿色化学科技有限公司 | A kind of technique of carbon four, light oil and coupling between methanol preparing propylene by catalytic cracking ethylene |
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Application publication date: 20110810 |