CN107266295A - MTBE purifying techniques - Google Patents
MTBE purifying techniques Download PDFInfo
- Publication number
- CN107266295A CN107266295A CN201710646464.3A CN201710646464A CN107266295A CN 107266295 A CN107266295 A CN 107266295A CN 201710646464 A CN201710646464 A CN 201710646464A CN 107266295 A CN107266295 A CN 107266295A
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- CN
- China
- Prior art keywords
- mtbe
- rectification column
- azeotropy rectification
- purity
- heat exchanger
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/34—Separation; Purification; Stabilisation; Use of additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of MTBE purifying techniques, the technique is including its step：Step 1：A pipeline from low-purity MTBE storage tanks is equipped with to be connected at MTBE device methyltertiarvbutyl ether reactor index combustion fans；Step 2：Purity is got into methyltertiarvbutyl ether reactor outlet with big lift pump for 90% or so MTBE and preceding road reaction distillate enters in azeotropy rectification column by the heating of input and output material heat exchanger；Step 3：In azeotropy rectification column distillation process, according to the volatile difference of each component in mixture, four-methanol azeotrope of unreacted carbon is set to be separated with MTBE, four-methanol azeotrope of carbon is distillated by pressure-control valve by tower top, being cooled to 40 DEG C through overhead condenser enters return tank of top of the tower.The beneficial effects of the invention are as follows purification degree is high, good in economic efficiency.
Description
Technical field
The present invention relates to MTBE process units field, particularly a kind of MTBE purifying techniques.
Background technology
MTBE is mainly used in adjusting the octane number of gasoline as the additive of gasoline, and MTBE purity is not up to standard, direct nothing
Method is sold and used, due to the presence of many destabilizing factors during device goes into operation, and is certain to produce some purity not up to standard
Product, the purification of MTBE purity can not be realized on original Process ba- sis, sales difficulty, deficiency in economic performance is caused, it is impossible to be full
Sufficient market and environmental requirement.
The content of the invention
The invention aims to solve the above problems, a kind of MTBE purifying techniques are devised.
Realize above-mentioned purpose the technical scheme is that, a kind of MTBE purifying techniques, the technique is including its step：
Step 1：It is equipped with a pipeline from low-purity MTBE storage tanks and is connected to MTBE device methyltertiarvbutyl ether reactor index combustion fans
Place；
Step 2：Purity is got into methyltertiarvbutyl ether reactor outlet and preceding road reaction distillate with big lift pump for 90% or so MTBE
Enter by the heating of input and output material heat exchanger in azeotropy rectification column；
Step 3：In azeotropy rectification column distillation process, according to the volatile difference of each component in mixture, make unreacted carbon
Four-methanol azeotrope is separated with MTBE, and four-methanol azeotrope of carbon is distillated by pressure-control valve by tower top, through tower top
Condenser is cooled to 40 DEG C and enters return tank of top of the tower, azeotropic mixture is divided into two parts after reflux pump, and a part is to flow back
Form enters azeotropy rectification column, and another part enters methanol water scrubber below；Simultaneously azeotropic distillation bottom of towe MTBE from be pressed into
Input and output material heat exchanger and MTBE coolers are cooled to less than 40 DEG C and send into qualified storage tank, and purity can reach more than 98%.
The step 2 Zhong Qian roads reaction distillate is the mixture of MTBE and the methanol of unreacted carbon four.
The structure of the device is：Low-purity MTBE storage tanks are gone out by new pipeline 5 and freshening pump 1 with methyltertiarvbutyl ether reactor 2
Mouth connection, methyltertiarvbutyl ether reactor outlet is connected by input and output material heat exchanger 3 with azeotropy rectification column 4, and the azeotropy rectification column passes through pressure
Force control valve 6 and overhead condenser 7 are connected with return tank 8, and return tank is washed by reflux pump 9 and azeotropy rectification column 4 and methanol
Tower 10 is connected, and the azeotropic distillation bottom of towe is connected with input and output material heat exchanger 3 and MTBE coolers 11, and the MTBE coolers are with closing
Lattice storage tank 12 is connected.
The MTBE purifying techniques made using technical scheme, compared with existing technique, are realized during going into operation
The low-purity MTBE of production and the effect for buying low-purity MTBE purifications, improve product yield, product purity adds company
Economic benefit.
Brief description of the drawings
Fig. 1 is the structural representation of MTBE purifying techniques device of the present invention；
In figure, 1：Freshening pump；2：Methyltertiarvbutyl ether reactor；3：Input and output material heat exchanger；4：Azeotropy rectification column 5：It is new to be equipped with pipeline 6：Pressure
Control valve；7：Overhead condenser；8：Return tank；9：Azeotropy rectification column reflux pump；10：Methanol water scrubber；11：MTBE coolers；
12：The qualified storage tanks of MTBE.
Embodiment
The present invention is specifically described below in conjunction with the accompanying drawings, as shown in figure 1, a kind of MTBE purifying techniques, the technique bag
Including its step is：Step 1：It is equipped with a pipeline from low-purity MTBE storage tanks and is connected to the outlet of MTBE devices methyltertiarvbutyl ether reactor
At regulating valve；Step 2：Purity is got into methyltertiarvbutyl ether reactor outlet and the reaction of preceding road with big lift pump for 90% or so MTBE
Distillate enters in azeotropy rectification column by the heating of input and output material heat exchanger；Step 3：In azeotropy rectification column distillation process, according to
The volatile difference of each component in mixture, enables four-methanol azeotrope of unreacted carbon to be separated with MTBE, four-methanol of carbon
Azeotropic mixture is distillated by pressure-control valve by tower top, and being cooled to 40 DEG C through overhead condenser enters return tank of top of the tower, azeotropic
Thing is divided into two parts after reflux pump, and a part enters azeotropy rectification column in the form of flowing back, and another part enters first below
Alcohol water scrubber；Azeotropic distillation bottom of towe MTBE is cooled to less than 40 DEG C into input and output material heat exchanger and MTBE coolers and sent from being pressed into simultaneously
Enter qualified storage tank, purity can reach more than 98%.The step 2 Zhong Qian roads reaction distillate is MTBE and the methanol of unreacted carbon four
Mixture.The structure of the device is：Low-purity MTBE storage tanks are gone out by new pipeline 5 and freshening pump 1 with methyltertiarvbutyl ether reactor 2
Mouth connection, methyltertiarvbutyl ether reactor outlet is connected by input and output material heat exchanger 3 with azeotropy rectification column 4, and the azeotropy rectification column passes through pressure
Force control valve 6 and overhead condenser 7 are connected with return tank 8, and return tank is washed by reflux pump 9 and azeotropy rectification column 4 and methanol
Tower 10 is connected, and the azeotropic distillation bottom of towe is connected with input and output material heat exchanger 3 and MTBE coolers 11, and the MTBE coolers are with closing
Lattice storage tank 12 is connected.
In the technical program, step 1：It is equipped with a new pipeline 5 from low-purity MTBE storage tanks and is connected to MTBE dresses
Put methyltertiarvbutyl ether reactor exit；Step 2：Purity is got to for 90% or so normal temperature MTBE by freshening pump 1 with 3 tons/h speed
Methyltertiarvbutyl ether reactor 2 is exported, with above etherification reaction distillate（MTBE and the methanol of unreacted carbon four mixture）By input and output material
Heat exchanger 3 is heated to 60 ° and entered in azeotropy rectification column 4；Step 3：In azeotropy rectification column distillation process, according to each in mixture
The difference of component volatilization, enables four-methanol azeotrope of unreacted carbon to be separated with MTBE, and four-methanol azeotrope of carbon passes through
Pressure-control valve 6 is distillated by tower top, and being cooled to 40 DEG C through overhead condenser 7 enters return tank of top of the tower 8, and four-methanol of carbon is common
Boiling thing is divided into two parts after reflux pump 9, and a part enters azeotropy rectification column 4 in the form of flowing back, and another part enters below
Methanol water scrubber 10；Azeotropic distillation bottom of towe MTBE is pressed into and is cooled into input and output material heat exchanger 3 and MTBE coolers 11 certainly simultaneously
Less than 40 DEG C are sent into qualified storage tank 12, and purity can reach more than 98%
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, and those skilled in the art are to it
In some parts may make some variation embody the present invention principle, belong within protection scope of the present invention.
Claims (3)
1. a kind of MTBE purifying techniques, it is characterised in that the technique is including its step：
Step 1：It is equipped with a pipeline from low-purity MTBE storage tanks and is connected to MTBE device methyltertiarvbutyl ether reactor index combustion fans
Place；
Step 2：Purity is got into methyltertiarvbutyl ether reactor outlet and preceding road reaction distillate with big lift pump for 90% or so MTBE
Enter by the heating of input and output material heat exchanger in azeotropy rectification column；
Step 3：In azeotropy rectification column distillation process, according to the volatile difference of each component in mixture, make unreacted carbon
Four-methanol azeotrope is separated with MTBE, and four-methanol azeotrope of carbon is distillated by pressure-control valve by tower top, through tower top
Condenser is cooled to 40 DEG C and enters return tank of top of the tower, azeotropic mixture is divided into two parts after reflux pump, and a part is to flow back
Form enters azeotropy rectification column, and another part enters methanol water scrubber below；Simultaneously azeotropic distillation bottom of towe MTBE from be pressed into
Input and output material heat exchanger and MTBE coolers are cooled to less than 40 DEG C and send into qualified storage tank, and purity can reach more than 98%.
2. MTBE purifying techniques according to claim 1, it is characterised in that distillate is reacted on the step 2 Zhong Qian roads is
MTBE and the methanol of unreacted carbon four mixture.
3. using the device of MTBE purifying techniques described in claim 1, it is characterised in that the structure of the device is：It is low pure
Degree MTBE storage tanks are connected by new pipeline 5 and freshening pump 1 with the outlet of methyltertiarvbutyl ether reactor 2, and methyltertiarvbutyl ether reactor outlet passes through input and output material
Heat exchanger 3 is connected with azeotropy rectification column 4, and the azeotropy rectification column passes through pressure-control valve 6 and overhead condenser 7 and return tank 8
Connection, return tank is connected by reflux pump 9 with azeotropy rectification column 4 and methanol water scrubber 10, the azeotropic distillation bottom of towe and turnover
Material heat exchanger 3 and MTBE coolers 11 are connected, and the MTBE coolers are connected with qualified storage tank 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646464.3A CN107266295A (en) | 2017-08-01 | 2017-08-01 | MTBE purifying techniques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646464.3A CN107266295A (en) | 2017-08-01 | 2017-08-01 | MTBE purifying techniques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107266295A true CN107266295A (en) | 2017-10-20 |
Family
ID=60075356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710646464.3A Pending CN107266295A (en) | 2017-08-01 | 2017-08-01 | MTBE purifying techniques |
Country Status (1)
| Country | Link |
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| CN (1) | CN107266295A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943213A (en) * | 2021-11-15 | 2022-01-18 | 丹东明珠特种树脂有限公司 | High-purity MTBE (methyl tert-butyl ether) process method for efficiently removing isobutene and preparation system thereof |
| CN115138297A (en) * | 2022-07-12 | 2022-10-04 | 安徽益沣石化有限公司 | Heat exchange device for MTBE (methyl tert-butyl ether) mixed phase bed reactor |
Citations (8)
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| US4144138A (en) * | 1978-01-18 | 1979-03-13 | Texaco Inc. | Recovery of ethers |
| SU804625A1 (en) * | 1976-06-28 | 1981-02-15 | Предприятие П/Я В-8585 | Method of isolating methyl-tert-butyl ether |
| US4302298A (en) * | 1979-02-22 | 1981-11-24 | Institut Francais Du Petrole | Process for isolating methyl tert-butyl ether from the reaction products of methanol with a C4 hydrocarbon cut containing isobutene |
| US4820877A (en) * | 1987-12-28 | 1989-04-11 | Mobil Oil Corporation | Etherification process improvement |
| EP0757977B1 (en) * | 1995-08-08 | 1999-01-20 | Huntsman Specialty Chemicals Corporation | Recovery of a secondary stream in the purification of methyl tertiary butyl ether |
| CN203269821U (en) * | 2013-05-10 | 2013-11-06 | 辽宁同益石化有限公司 | MTBE (methyl tert butyl ether) production and purification device |
| CN204656031U (en) * | 2015-05-13 | 2015-09-23 | 山东神驰石化有限公司 | A kind of MTBE reaction and rectification device |
| CN205287681U (en) * | 2016-01-16 | 2016-06-08 | 山东东方宏业化工有限公司 | Energy -conservation subtracts to consume produces MTBE azeotropy rectifying column device |
-
2017
- 2017-08-01 CN CN201710646464.3A patent/CN107266295A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU804625A1 (en) * | 1976-06-28 | 1981-02-15 | Предприятие П/Я В-8585 | Method of isolating methyl-tert-butyl ether |
| US4144138A (en) * | 1978-01-18 | 1979-03-13 | Texaco Inc. | Recovery of ethers |
| US4302298A (en) * | 1979-02-22 | 1981-11-24 | Institut Francais Du Petrole | Process for isolating methyl tert-butyl ether from the reaction products of methanol with a C4 hydrocarbon cut containing isobutene |
| US4820877A (en) * | 1987-12-28 | 1989-04-11 | Mobil Oil Corporation | Etherification process improvement |
| EP0757977B1 (en) * | 1995-08-08 | 1999-01-20 | Huntsman Specialty Chemicals Corporation | Recovery of a secondary stream in the purification of methyl tertiary butyl ether |
| CN203269821U (en) * | 2013-05-10 | 2013-11-06 | 辽宁同益石化有限公司 | MTBE (methyl tert butyl ether) production and purification device |
| CN204656031U (en) * | 2015-05-13 | 2015-09-23 | 山东神驰石化有限公司 | A kind of MTBE reaction and rectification device |
| CN205287681U (en) * | 2016-01-16 | 2016-06-08 | 山东东方宏业化工有限公司 | Energy -conservation subtracts to consume produces MTBE azeotropy rectifying column device |
Non-Patent Citations (4)
| Title |
|---|
| 李金柱等: ""甲基叔丁基醚装置共沸塔模拟及优化"", 《化工生产和技术》 * |
| 王进善等: ""甲基叔丁基醚_MTBE_生产技术的开发"", 《齐鲁石油化工》 * |
| 申锡: ""甲基叔丁基醚的技术改造"", 《齐鲁石油化工》 * |
| 郑志刚等: ""甲基叔丁基醚装置的换热网络优化"", 《现代化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943213A (en) * | 2021-11-15 | 2022-01-18 | 丹东明珠特种树脂有限公司 | High-purity MTBE (methyl tert-butyl ether) process method for efficiently removing isobutene and preparation system thereof |
| CN115138297A (en) * | 2022-07-12 | 2022-10-04 | 安徽益沣石化有限公司 | Heat exchange device for MTBE (methyl tert-butyl ether) mixed phase bed reactor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |