CN204656036U - A kind of novel energy-saving MTBE desulfurization rectifying feed arrangement - Google Patents
A kind of novel energy-saving MTBE desulfurization rectifying feed arrangement Download PDFInfo
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- CN204656036U CN204656036U CN201520303031.4U CN201520303031U CN204656036U CN 204656036 U CN204656036 U CN 204656036U CN 201520303031 U CN201520303031 U CN 201520303031U CN 204656036 U CN204656036 U CN 204656036U
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- rectifying column
- desulfurization rectifying
- desulfurization
- feed
- mtbe
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model relates to a kind of novel energy-saving MTBE desulfurization rectifying feed arrangement, comprise reactive distillation column, desulfurization rectifying column feed pump, flow control valve, reverse eddy flow feed distributor and desulfurization rectifying column, described desulfurization rectifying column feed pump is connected by pipeline with described reactive distillation tower bottom, described reverse eddy flow feed distributor is arranged on the charging aperture place of described desulfurization rectifying column inside, both are connected by pipeline, and described flow control valve is arranged on the pipeline between described desulfurization rectifying column feed pump and described reverse eddy flow feed distributor.The utility model be by MTBE liquid by pump pressurized delivered, avoid in pipeline, produce stream-liquid two-phase flow or vapour locking, make full use of upstream device thermal source, save heating steam at the bottom of recirculated water and tower; Adopt reverse eddy flow feed distribution mechanism to realize flash of steam and vapour-liquid quick separating, improve the separative efficiency of rectifying column, ensure that rising vapour phase is uniformly distributed, stablize rectifying column operation.
Description
Technical field
The utility model belongs to chemical separating field, particularly relates to a kind of novel energy-saving MTBE desulfurization rectifying feed arrangement.
Background technology
Methyl tertiary butyl ether(MTBE) (english abbreviation MTBE), molecular weight 88.15, boiling point 55.3 DEG C is important industrial chemicals, is also the blending component of clean gasoline with high octane.Industrial mainly with mixing carbon four component in oil refining or chemical industry liquefied gas for raw material, produce with methyl alcohol effect and obtain.Due in oil refining carbon four component containing certain sulfur content, to refine oil, the sulfur content of MTBE product that mixing carbon four produces for raw material is higher, and generally low at 100 ~ 200ppm, high reaches 2000 ~ 3000ppm.Along with economic development and the continuous reinforcement to environmental requirement, the sulfur content index of motor petrol is more and more tighter.Implement in full state (capital) V fuel oil standard, the sulfur content of gasoline requires to be reduced to below 10ppm further.In addition, during as industrial chemicals, the sulfur content in MTBE also requires lower than 10ppm.As the blending component of clean gasoline, the addition of MTBE is generally between 10-15%, and therefore the sulfur content of MTBE being reduced to below 10ppm is inevitable requirement from now on.
In the production process of MTBE, because MTBE has higher dissolubility than C_4 hydrocarbon to sulfide, and the boiling point of most sulfide is high compared with the boiling point of C_4 hydrocarbon class, so the sulfide in feed carbon four, the overwhelming majority is enriched in MTBE product.Adopt rectifying (comprising extracting rectifying, absorption distillation, single tower distillation, two-tower rectification), produce the first-selected technique that low-sulfur MTBE (being less than 10ppm) is refinery.
Traditional way is, extracts out, be cooled to after below 60 DEG C, directly enter desulfurization rectifying column and carry out desulfurization through subcooler from reactive distillation column (or azeotrope column) end MTBE production technology by the liquid MTBE self-pressure of 125-135 DEG C.Larger defect is there is in this way in actual application.1 need use cooler, consumes a large amount of recirculated water.2 feeding temperatures are difficult to improve, and because reducing at manifold pressure along with fluid, overheated MTBE liquid can be vaporized and be produced stream-liquid two-phase flow even vapour locking phenomenon, causes pipeline to shake, and flow is unstable, causes rectifying Feedstock fluctuation large, thus affects rectifying column stable operation.3 do not utilize process upstream heat energy, increase rectifying tower bottom reboiler heating load, are unfavorable for Finestill energy-saving.4 feed zones lack appropriate design, affect rectifying separating effect.
Utility model content
For solving the problem, technical problem to be solved in the utility model is to provide one both can save recirculated water, reduced bottom reboiler load, steam saving consumption, can avoid again overheated MTBE liquid in pipeline, produce stream-liquid two-phase flow or vapour locking phenomenon, cause flowed fluctuation.Rectifying column charging adopts reverse eddy flow feed distribution mechanism, set up flash of steam space, vapour-liquid quick separating is reached by eddy flow centrifugal flow, avoid rising vapour phase band liquid, descending liquid phase band vapour, improve the separative efficiency of rectifying column, can ensure that rising vapour phase is uniformly distributed simultaneously, stablize the novel energy-saving MTBE desulfurization rectifying feed arrangement of rectifying column operation.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of novel energy-saving MTBE desulfurization rectifying feed arrangement, comprise reactive distillation column (or azeotrope column), desulfurization rectifying column feed pump, flow control valve, reverse eddy flow feed distributor and desulfurization rectifying column, described desulfurization rectifying column feed pump is connected by pipeline with described reactive distillation tower bottom, described reverse eddy flow feed distributor is arranged on the charging aperture place of described desulfurization rectifying column inside, described desulfurization rectifying column feed pump is connected by pipeline with described reverse eddy flow feed distributor, described flow control valve is arranged on the pipeline between described desulfurization rectifying column feed pump and described reverse eddy flow feed distributor.
The beneficial effects of the utility model are: adopt novel energy-conserving charging flow process and device, by MTBE liquid by pump pressurized delivered, abundant sharp upstream device thermal source, both recirculated water can be saved, reduce bottom reboiler load, steam saving consumption, can avoid again overheated MTBE liquid to produce stream-liquid two-phase flow or vapour locking phenomenon at pipeline, cause flowed fluctuation.The charging of desulfurization rectifying column adopts reverse eddy flow feed distributor, set up flash of steam space, vapour-liquid quick separating is reached by eddy flow centrifugal flow, avoid rising vapour phase band liquid, descending liquid phase band vapour, improve the separative efficiency of rectifying column, can ensure that rising vapour phase is uniformly distributed simultaneously, stablize rectifying column operation.
On the basis of technique scheme, the utility model can also do following improvement:
Further, described pipeline is liquidus curve.
Further, described reverse eddy flow feed distributor comprises charging aperture, inner sleeve, gripper shoe, outer sleeve, two flow distribution plates and circular ring flat-plate, described charging aperture is fixed on described desulfurization rectifying column, described circular ring flat-plate upper surface is fixed on by multiple upper gusset on the inwall of described desulfurization rectifying column, described upper gusset is evenly distributed on described circular ring flat-plate, leaves gap between described circular ring flat-plate outer circumferential edges and the inwall of described desulfurization rectifying column;
Described inner sleeve upper end is fixed on described circular ring flat-plate lower surface, and described outer sleeve is enclosed within outside described inner sleeve, and its upper end is also fixed on described circular ring flat-plate lower surface;
Described flow distribution plate is arc, and two flow distribution plate one end are tangentially fixedly connected with, and the other end is separately fixed on described inner sleeve;
Described gripper shoe one end is fixedly connected with described inner sleeve lower end, and the other end is fixed on described outer sleeve inwall.
Further, the length of described outer sleeve is greater than the length of described inner sleeve.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is reverse eddy flow feed distributor sectional structure schematic diagram in the utility model;
Fig. 3 is reverse eddy flow feed distributor plan structure schematic diagram in the utility model.
In accompanying drawing, the list of parts representated by each label is as follows:
1, reactive distillation column, 2, desulfurization rectifying column feed pump, 3, flow control valve, 4, reverse eddy flow feed distributor, 4-1, charging aperture, 4-2, inner sleeve, 4-3, gripper shoe, 4-4, outer sleeve, 4-5, upper gusset, 4-6 flow distribution plate, 4-7, circular ring flat-plate, 5, desulfurization rectifying column.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of novel energy-saving MTBE desulfurization rectifying feed arrangement, comprise reactive distillation column 1, desulfurization rectifying column feed pump 2, flow control valve 3, reverse eddy flow feed distributor 4 and desulfurization rectifying column 5, described desulfurization rectifying column feed pump 2 is connected by pipeline with bottom described reactive distillation column 1, described reverse eddy flow feed distributor 4 is arranged on the charging aperture place of described desulfurization rectifying column 5 inside, described desulfurization rectifying column feed pump 2 is connected by pipeline with described reverse eddy flow feed distributor 4, described flow control valve 3 is arranged on the pipeline between described desulfurization rectifying column feed pump 2 and described reverse eddy flow feed distributor 4.
Described pipeline is liquidus curve.
As shown in Figures 2 and 3, described reverse eddy flow feed distributor 4 comprises charging aperture 4-1, inner sleeve 4-2, gripper shoe 4-3, outer sleeve 4-4, upper gusset 4-5, two flow distribution plate 4-4 and circular ring flat-plate 4-7, described charging aperture 4-1 is fixed on described desulfurization rectifying column 5, described circular ring flat-plate 4-7 upper surface is fixed in described desulfurization rectifying column 5 by multiple upper gusset 4-5, described upper gusset 4-5 is evenly distributed on described circular ring flat-plate 4-7, leaves gap between described circular ring flat-plate 4-7 outer circumferential edges and the inwall of described desulfurization rectifying column 5;
Described inner sleeve 4-2 upper end is fixed on described circular ring flat-plate 4-7 lower surface, and described outer sleeve 4-4 is enclosed within outside described inner sleeve 4-2, and its upper end is also fixed on described circular ring flat-plate 4-7 lower surface;
Described flow distribution plate 4-4 is arc, and two flow distribution plate 4-4 one end are tangentially fixedly connected with, and the other end is separately fixed on described inner sleeve 4-2;
Described gripper shoe 4-3 one end is fixedly connected with described inner sleeve 4-2 lower end, and the other end is fixed on described outer sleeve 4-4 inwall.
The length of described outer sleeve 4-4 is greater than the length of described inner sleeve 4-2.
Operation principle of the present utility model and the course of work: MTBE saturated liquid (125-135 DEG C, pressure 0.55MPa (gauge pressure)) carry out pressurization extraction from MTBE reactive distillation column 1 (or azeotrope column) bottom through desulfurization rectifying column feed pump 2, carry out Flow-rate adjustment with flow control valve 3, entered in the middle part of desulfurization rectifying column 5 by reverse eddy flow feed distributor 4.This measure can be avoided overheated MTBE liquid to cause components vaporize because there being the pressure loss when Cemented filling and produce biphase gas and liquid flow flowing even generation vapour locking phenomenon, thus ensure that MTBE liquid can be in superheated liquid state before entering desulfurization rectifying column 5, make phase transformation vaporescence only occur in 5 li, desulfurization rectifying column.
When the MTBE liquid of higher temperature and pressure enters desulfurization rectifying column 5, pressure declines rapidly (to about 0.080Mpa (gauge pressure)), sensible heat entrained by fluid, violent flash of steam will be there is under thermodynamic-driven, high velocity turbulent flow swirling motion is there is along reverse eddy flow feed distributor 4 under pressure differential drives, under centrifugal action, vapour phase is separated rapidly with liquid phase.
Charging is divided into two plumes at charging aperture place by two arc flow distribution plate 4-6 by MTBE fluid, tangentially enters along the annular passage between inner and outer sleeves.Fluid is along annular runner flow at high speed and violent flash of steam occurs, and vapour phase carrying of liquids does swirling motion between annular sleeve, produces strong centrifugal action, realize vapor-liquid separation while high velocity turbulent flow.
Liquid phase flows downward along outer sleeve 4-4 inwall, enters reverse eddy flow feed distributor 4 descending trays.Vapour phase is descending, and to walk around inner sleeve 4-2 lower end up by center.This reverse eddy flow feed distributor 4 can be eliminated liquid and vapor capacity and carry secretly mutually, thus improves the plate efficiency with feedboard adjacent tray.On the other hand, vapour phase is runner fast turbulent circular motion annularly, under centrifugal action, radially to the quick gas distribution of surrounding, vapour phase first walks around inner sleeve 4-2 lower end downwards by center upwards, carries out secondary gas distribution, thus realize even gas distribution on feedboard, avoid vapour phase bias current, tower plate operation near monolithic stability feedboard, realize high accuracy rectifying.
The utility model adopts novel energy-conserving charging flow process and distribution apparatus, by desulfurization rectifying column feed pump 2 pressurized delivered, abundant sharp desulfurization rectifying column 5 upstream device thermal source (125-135 DEG C, pressure 0.55MPa (gauge pressure)), both can save recirculated water, reduce bottom reboiler load, steam saving consumption, pipeline can be avoided again to produce two phase flow or vapour locking phenomenon, cause flowed fluctuation.Entering the reverse eddy flow feed distributor 4 of desulfurization rectifying column 5 place employing, set up flash of steam space, vapour-liquid quick separating is reached by eddy flow centrifugal motion, avoid rising vapour phase band liquid, descending liquid phase band vapour, improve the separative efficiency of tower, can ensure that rising vapour phase is uniformly distributed, the operation of stably desulphurizing rectifying column 5 simultaneously.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a novel energy-saving MTBE desulfurization rectifying feed arrangement, it is characterized in that, comprise reactive distillation column (1), desulfurization rectifying column feed pump (2), flow control valve (3), reverse eddy flow feed distributor (4) and desulfurization rectifying column (5), described desulfurization rectifying column feed pump (2) is connected by pipeline with described reactive distillation column (1) bottom, described reverse eddy flow feed distributor (4) is arranged on the inner charging aperture place of described desulfurization rectifying column (5), described desulfurization rectifying column feed pump (2) is connected by pipeline with described reverse eddy flow feed distributor (4), described flow control valve (3) is arranged on the pipeline between described desulfurization rectifying column feed pump (2) and described reverse eddy flow feed distributor (4).
2. a kind of novel energy-saving MTBE desulfurization rectifying feed arrangement according to claim 1, it is characterized in that, described pipeline is liquidus curve.
3. a kind of novel energy-saving MTBE desulfurization rectifying feed arrangement according to claim 2, it is characterized in that, described reverse eddy flow feed distributor (4) comprises charging aperture (4-1), inner sleeve (4-2), gripper shoe (4-3), outer sleeve (4-4), two flow distribution plates (4-6) and circular ring flat-plate (4-7), described charging aperture (4-1) is fixed on described desulfurization rectifying column (5), described circular ring flat-plate (4-7) upper surface is fixed on described desulfurization rectifying column (5) inwall by multiple upper gusset (4-5), described upper gusset (4-5) is evenly distributed on described circular ring flat-plate (4-7), gap is left between described circular ring flat-plate (4-7) outer circumferential edges and the inwall of described desulfurization rectifying column (5),
Described inner sleeve (4-2) upper end is fixed on described circular ring flat-plate (4-7) lower surface, described outer sleeve (4-4) is enclosed within described inner sleeve (4-2) outward, and its upper end is also fixed on described circular ring flat-plate (4-7) lower surface;
Described flow distribution plate (4-6) is arc, and two flow distribution plate (4-6) one end are tangentially fixedly connected with, and the other end is separately fixed on described inner sleeve (4-2);
Described gripper shoe (4-3) one end is fixedly connected with described inner sleeve (4-2) lower end, and the other end is fixed on described outer sleeve (4-4) inwall.
4. a kind of novel energy-saving MTBE desulfurization rectifying feed arrangement according to claim 3, it is characterized in that, the length of described outer sleeve (4-4) is greater than the length of described inner sleeve (4-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303031.4U CN204656036U (en) | 2015-05-11 | 2015-05-11 | A kind of novel energy-saving MTBE desulfurization rectifying feed arrangement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520303031.4U CN204656036U (en) | 2015-05-11 | 2015-05-11 | A kind of novel energy-saving MTBE desulfurization rectifying feed arrangement |
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| CN204656036U true CN204656036U (en) | 2015-09-23 |
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| CN201520303031.4U Expired - Fee Related CN204656036U (en) | 2015-05-11 | 2015-05-11 | A kind of novel energy-saving MTBE desulfurization rectifying feed arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730969A (en) * | 2017-03-22 | 2017-05-31 | 中国石油大学(华东) | One kind rotation fraction gas-liquid mixed phase feed distributor |
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2015
- 2015-05-11 CN CN201520303031.4U patent/CN204656036U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730969A (en) * | 2017-03-22 | 2017-05-31 | 中国石油大学(华东) | One kind rotation fraction gas-liquid mixed phase feed distributor |
| CN106730969B (en) * | 2017-03-22 | 2024-03-12 | 中国石油大学(华东) | Rotary separation type gas-liquid mixed phase feeding distributor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20170511 |