CN103145533A - Process and device for producing MTBE (Methyl Tertiary Butyl Ether) through blending and refining high-concentration isobutene - Google Patents
Process and device for producing MTBE (Methyl Tertiary Butyl Ether) through blending and refining high-concentration isobutene Download PDFInfo
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- CN103145533A CN103145533A CN2013100907137A CN201310090713A CN103145533A CN 103145533 A CN103145533 A CN 103145533A CN 2013100907137 A CN2013100907137 A CN 2013100907137A CN 201310090713 A CN201310090713 A CN 201310090713A CN 103145533 A CN103145533 A CN 103145533A
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Abstract
The invention relates to a process and a device for producing MTBE (Methyl Tertiary Butyl Ether) through blending and refining high-concentration isobutene. The process comprises the following steps of: placing the purchased high-concentration isobutene in a storing tank 2 through a flowmeter1, metering through a metering pump 3 or a metering pump 4, and arranging a high-concentration isobutene conveying pipeline; conveying quantitative high-concentration isobutene to a C4 raw material tank 5 or a C4 raw material tank 6 of an MTBE device, wherein the concentration of isobutene is increased in the raw material C4 by utilizing a blending and refining method; and finally incorporating into a production system, wherein the outlet end of the high-concentration isobutene pipeline, at the back of the metering pump 3 or the metering pump 4, is arranged on the C4 raw material tank 5 or the C4 raw material tank 6 entering the MTBE device, and the other end of the pipeline, in front of the metering pump, is connected with the high-concentration isobutene storing tank 2. The process disclosed by the invention has the advantages that the problem that the concentration of the isobutene in the raw material C4 is low can be solved; the MTBE yield is increased; the unit energy consumption of the production is reduced; and the production cost is saved.
Description
Technical field
The invention belongs to the organic chemistry oxygen-containing functional group and form technical field, relate to a kind of technique and device that refining high density iso-butylene is produced MTBE of mixing.
Background technology
The MTBE(methyl tertiary butyl ether) be a kind of mediation high octane gasoline component, its basic octane value RON:118, MON:100 is good gasoline high-octane rating additive and octane promoter.MTBE and gasoline can dissolve each other and demixing phenomenon not occur by arbitrary proportion, when being in harmonious proportion with gasoline component, good Blending effect are arranged, and are in harmonious proportion octane value higher than its clear octane number.
Owing to being subjected to iso-butylene content component impact on the low side in material carbon four (C4), during lower concentration iso-butylene C4 raw material production MTBE, output is generally lower, causes the MTBE plant energy consumption higher, and cost is higher, and economic benefit is restricted.In order to control the isobutylene concentration of raw material C4, by mixing refining high density iso-butylene, improve MTBE output, reduce energy consumption, increase economic efficiency.
Summary of the invention
The present invention relates to a kind of technique that refining high density iso-butylene is produced MTBE of mixing, purpose is to improve device to produce MTBE output, reduces the production unit consumption, reduces production costs.
The present invention unloads the outsourcing high-purity isobutylene to enter high-purity isobutylene hold-up vessel 2 after rear warp let-off under meter 1 measures, after accurately accounting iso-butylene batching metering pump 3 or volume pump 4 fill into head tank high-purity isobutylene amount, by iso-butylene batching metering pump, thick iso-butylene is filled into MTBE device head tank 5 or MTBE device head tank 6 by calculated amount; According to raw material compositional analysis after volume, incorporate at last the MTBE production system into, carry out MTBE production according to methyl alcohol and iso-butylene proportioning, methyl alcohol and iso-butylene mol ratio are 1.05-1.15, reactor batch temperature is controlled at 60-75 ℃.
In the situation that carrying out the high density iso-butylene, the normal production of MTBE mixes refining, wherein: outlet one end of iso-butylene batching metering pump 3 or the rear high density iso-butylene of volume pump 4 pipeline is arranged on C4 head tank 5 or the MTBE device head tank 6 into the MTBE device, and the other end before iso-butylene batching metering pump is connected with high density iso-butylene hold-up vessel 2; After the high density iso-butylene is unloaded, deliver to high density iso-butylene hold-up vessel 2 by transferpump, through iso-butylene batching metering pump 3 or volume pump 4, quantitative high density iso-butylene is sent in MTBE device C4 head tank 5 or MTBE device head tank 6 again, incorporated at last into the MTBE system that produces.
The present invention mixes the technique that refining high density iso-butylene is produced MTBE, mixes refining iso-butylene purity mass percent at 60%-98%, and it mixes the refining flow at 1～3 t/h.
The technique that refining high density iso-butylene is produced MTBE, the use diaphragm metering pump mixed of the present invention.
Under meter of the present invention can be spinner-type flowmeter.
a kind of device of mixing refining high density iso-butylene production MTBE, its feature is being placed in outsourcing high density iso-butylene in hold-up vessel 2 by under meter 1, by iso-butylene batching metering pump 3 or volume pump 4 meterings, and high density iso-butylene line of pipes is set, quantitative high density iso-butylene is delivered in the C4 head tank 5 or C4 head tank 6 of MTBE device, the method that refining is mixed in utilization improves the concentration of iso-butylene in raw material C4, incorporate at last the MTBE system that produces into, wherein: outlet one end of iso-butylene batching metering pump 3 or the rear high density iso-butylene of volume pump 4 pipeline is arranged on C4 head tank 5 or the C4 head tank 6 into the MTBE device, the other end before iso-butylene batching metering pump is connected with high density iso-butylene hold-up vessel 2.
Advantage of the present invention and beneficial effect:
The proposition of the present invention innovation outsourcing high-purity isobutylene raw material mix different substances together the device of producing MTBE, and can accomplish not affect under the prerequisite of normal production, support by the arm refining and normal charging and produce and carry out simultaneously.
Apparatus of the present invention can solve isobutylene concentration problem on the low side in raw material C4, improve the active principle isobutylene concentration and process, and are convenient to production operation and synthetic the carrying out of reaction.
After practicality of the present invention, the MTBE plant yield rises 5.01%, and isobutene conversion rises 0.15%; The energy consumption aspect, device steam consumption quantity unit consumption value is 1.23 tons/ton, unit consumption does not descend 0.14 ton/ton than mixing; Electricity unit consumption value 42.655kwh/t, unit consumption is than not mixing decline 4.081kwh/t; The device comprehensive energy consumption is 100. 99 kilograms of mark oil/ton products, does not refine than mixing the 10.66 kilograms of mark oil/ton products that descend.Improve significantly the output of MTBE product, reached the purpose that increases production and improves productivity.
Description of drawings
Fig. 1 is that the device schematic diagram that refining high density iso-butylene is produced MTBE is mixed in invention.
Embodiment
After the outsourcing iso-butylene was unloaded, turn on pump was carried the outsourcing high purity, measures laggard high-purity isobutylene hold-up vessel 2 through spinner-type flowmeter 1.
High-purity isobutylene hold-up vessel 2 materials are formed analyze.
Adjust iso-butylene batching metering pump 3 or volume pump 4 and fill into MTBE head tank 5 or the thick iso-butylene amount of MTBE head tank 6, fill into for the first time iso-butylene and mix rear concentration principle to be no more than MTBE device Raw material processing design load.
The spike amount press the 0.5-1.5 ton/hour, addition ratio 1:15-1:40 regulates methyl alcohol and iso-butylene mol ratio 1.05-1.15, reactor batch temperature is controlled at 60-75 ℃.After the outsourcing high-purity isobutylene filled into, MTBE device raw material iso-butylene content progressively rose, and required every two hours the C4 raw material to be done once to analyze, and correctly controlled alfin ratio according to iso-butylene changing conditions in raw material.In raw material iso-butylene content without considerable change after, it is normal that raw material C4 compositional analysis recovers.
In practice, 0.8 ton/hour of spike amount, addition ratio 25:1 regulates methyl alcohol and iso-butylene mol ratio 1.05-1.15, and reactor batch temperature is controlled at 60-75 ℃.It is 480 tons of 91.55% high-purity isobutylenes that MTBE device accumulative total is mixed refining purity, amounts to 600 hours.Be 100% mixing the up-to-standard rate of refining process product.When mixing refining, the MTBE plant yield rises 5.01%, and isobutene conversion rises 0.15%.The energy consumption aspect, device steam consumption quantity unit consumption value is 1.23 tons/ton, unit consumption does not descend 0.14 ton/ton than mixing; Electricity unit consumption value 42.655kwh/t, unit consumption is than not mixing decline 4.081kwh/t; The device comprehensive energy consumption is 100. 99 kilograms of mark oil/ton products, does not refine than mixing the 10.66 kilograms of mark oil/ton products that descend.
Claims (5)
1. mix the technique that refining high density iso-butylene is produced MTBE for one kind, it is characterized in that the outsourcing high-purity isobutylene is unloaded and enter high-purity isobutylene hold-up vessel (2) after rear warp let-off under meter (1) measures, after accurately accounting iso-butylene batching metering pump fills into head tank high-purity isobutylene amount, by iso-butylene batching metering pump (3) or (4), thick iso-butylene is filled into MTBE device head tank (5) or (6) by calculated amount; According to raw material compositional analysis after volume, incorporate at last the MTBE production system into, carry out MTBE production according to methyl alcohol and iso-butylene proportioning, methyl alcohol and iso-butylene mol ratio are controlled to be 1.05-1.15, and reactor batch temperature is controlled at 60-75 ℃.
According to claim 1 mix the technique that refining high density iso-butylene is produced MTBE, it is characterized in that mixing refining iso-butylene purity mass percent at 60%-98%, it mixes the refining flow at 1～3 t/h.
3. mix the device that refining high density iso-butylene is produced MTBE for one kind, it is characterized in that by under meter (1), outsourcing high density iso-butylene being placed in hold-up vessel (2), by iso-butylene batching metering pump (3) or (4) metering, and high density iso-butylene line of pipes is set, quantitative high density iso-butylene is delivered in the C4 head tank (5) or (6) of MTBE device, incorporate at last the MTBE system that produces into, the method that refining is mixed in utilization improves the concentration of iso-butylene in raw material C4, wherein: behind iso-butylene batching metering pump (3) or (4), outlet one end of high density iso-butylene pipeline is arranged on the C4 head tank (5) or (6) of MTBE device, the other end before iso-butylene batching metering pump is connected with high density iso-butylene hold-up vessel (2).
4. the device of mixing refining high density iso-butylene production MTBE according to claim 3, is characterized in that described iso-butylene batching metering pump is diaphragm metering pump.
5. the device of mixing refining high density iso-butylene production MTBE according to claim 1, is characterized in that described under meter is spinner-type flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100907137A CN103145533A (en) | 2013-03-21 | 2013-03-21 | Process and device for producing MTBE (Methyl Tertiary Butyl Ether) through blending and refining high-concentration isobutene |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100907137A CN103145533A (en) | 2013-03-21 | 2013-03-21 | Process and device for producing MTBE (Methyl Tertiary Butyl Ether) through blending and refining high-concentration isobutene |
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| CN103145533A true CN103145533A (en) | 2013-06-12 |
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| CN2013100907137A Pending CN103145533A (en) | 2013-03-21 | 2013-03-21 | Process and device for producing MTBE (Methyl Tertiary Butyl Ether) through blending and refining high-concentration isobutene |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926619A (en) * | 2015-05-21 | 2015-09-23 | 石家庄鼎盈化工股份有限公司 | Synthesis method for petrochemical methyl tertiary butyl ether |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040360A (en) * | 1989-06-28 | 1990-03-14 | 齐鲁石油化工公司研究院 | The new preparation method of methyl tertiary butyl ether (MTBE) |
| CN1856457A (en) * | 2003-09-23 | 2006-11-01 | 埃克森美孚化学专利公司 | Improvements in or relating to isobutylene |
| CN101397510A (en) * | 2007-09-28 | 2009-04-01 | 中国石油化工股份有限公司 | Inferior gasoline upgrading method |
-
2013
- 2013-03-21 CN CN2013100907137A patent/CN103145533A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040360A (en) * | 1989-06-28 | 1990-03-14 | 齐鲁石油化工公司研究院 | The new preparation method of methyl tertiary butyl ether (MTBE) |
| CN1856457A (en) * | 2003-09-23 | 2006-11-01 | 埃克森美孚化学专利公司 | Improvements in or relating to isobutylene |
| CN101397510A (en) * | 2007-09-28 | 2009-04-01 | 中国石油化工股份有限公司 | Inferior gasoline upgrading method |
Non-Patent Citations (1)
| Title |
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| 曾飞峙: "甲基叔丁基醚生产中纯度偏低的问题及措施", 《山东化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926619A (en) * | 2015-05-21 | 2015-09-23 | 石家庄鼎盈化工股份有限公司 | Synthesis method for petrochemical methyl tertiary butyl ether |
| CN104926619B (en) * | 2015-05-21 | 2016-08-24 | 石家庄鼎盈化工股份有限公司 | A kind of synthetic method of petrochemicals methyl tertiary butyl ether(MTBE) |
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Application publication date: 20130612 |