CN202595004U - Low energy consumption preparation process system of dimethyl ether - Google Patents
Low energy consumption preparation process system of dimethyl ether Download PDFInfo
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- CN202595004U CN202595004U CN201220166001XU CN201220166001U CN202595004U CN 202595004 U CN202595004 U CN 202595004U CN 201220166001X U CN201220166001X U CN 201220166001XU CN 201220166001 U CN201220166001 U CN 201220166001U CN 202595004 U CN202595004 U CN 202595004U
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- methyl ether
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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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Abstract
The utility model discloses a low energy consumption preparation process system of dimethyl ether. The low energy consumption preparation process system comprises a gas heat exchanger, a reactor, a rectifying tower, a methanol preheater, a methanol heater, a methanol evaporator and a flash tank, wherein the methanol preheater, the methanol heater, the methanol evaporator and the flash tank are sequentially connected, wherein the top of the flash tank is connected with the tops of the gas heat exchanger and a vaporization tower, the top of the flash tank is connected with a first booster pump, the first booster pump is connected with the top of the vaporization tower, the gas heat exchanger is connected with the reactor and a vaporization tower reboiler, the lower part of the vaporization tower is connected with the vaporization tower reboiler and is communicated with the methanol preheater, the vaporization tower reboiler is connected with the methanol heater, the methanol heater is connected with a crude methyl ether preheater, the crude methyl ether preheater is respectively connected with a crude methyl ether condenser, a second booster pump and the rectifying tower, the crude methyl ether condenser and the second booster pump are connected with a crude methyl ether storage tank. Through irrationally providing the methanol preheater, the methanol evaporator, the flash tank and the first booster pump, heat energy is fully utilized, the efficiency is increased and the process is simplified.
Description
Technical field
The utility model relates to the dme synthesis technical field, especially relates to a kind of preparation technology system of low power consuming dme.
Background technology
Dme uses mainly as the sprays carrier of aerosol industry at present, and the purposes of dme constantly is able to exploitation in recent years, as as medical aerosol propellant, mix refrigerant, also can be used as the gasoline and diesel engine alternative fuel; In addition, dme can also be as the raw material of producing low-carbon alkene.Be to have under the more and more nervous situation of resource, with dme as clean fuel be used to produce low-carbon alkene, its potential market ten minutes beyond doubt is huge.
At present; The preparation technology system of dme is more; Generally comprise vaporization and put forward tower, dme rectifying tower and the Dehydration of methanol system of heating up in a steamer; Said Dehydration of methanol system and said vaporization are carried and are heated up in a steamer tower and said dme rectifying tower links to each other through pipeline, and the dme rectifying tower has the dme condensing surface through pipe connection.And adopt the process of preparation technology's systems produce dme following: a, with impurity be main material benzenemethanol with water with from the extraction of dme rectifying tower be that the mixed solution of staple is carried in vaporization and being heated up in a steamer that vaporization separates the tower with the diformazan alcohol and water, send into the Dehydration of methanol system from the methanol steam that cat head comes out; B, said Dehydration of methanol system with dme, first alcohol and water be the master reactant therefrom, the bottom gets into the dme rectifying tower; From the required dme product of dme rectifying tower cat head extraction; Wherein, the dme steam of dme rectifying tower cat head passes back into said dme rectifying tower after through said dme condenser condenses.Yet the preparation technology system of above-mentioned existing low power consuming dme energy consumption when the preparation dme is higher, and the heat energy of steam condensate, wastewater containing methanol, reaction gas is underutilized.
Summary of the invention
The utility model is to the defective that the above-mentioned background technology exists a kind of heat energy that makes full use of steam condensate, wastewater containing methanol and reaction gas to be provided; Save heating steam and water coolant, reduced the preparation technology system of the low power consuming dme of production cost and process simplification.
For realizing above-mentioned purpose; The utility model discloses a kind of preparation technology system of low power consuming dme; It comprises gas heat exchanger, reactor drum, rectifying tower, passes through methanol preheater, methyl alcohol well heater, methanol evaporator and flash tank that pipeline links to each other along order; The top of said flash tank links to each other through the top of pipeline with gas heat exchanger and vaporization tower; The bottom of said flash tank links to each other with first topping-up pump through pipeline; Said first topping-up pump links to each other with the vaporization top of tower through pipeline, and said gas heat exchanger links to each other with reactor drum and vaporization tower reboiler through pipeline, and said vaporization tower bottom links to each other with said vaporization tower reboiler through pipeline and is communicated with said methanol preheater; Said vaporization tower reboiler links to each other with said methyl alcohol well heater through pipeline; Said methyl alcohol well heater is connected with thick methyl ether preheater, and said thick methyl ether preheater is connected with thick methyl ether condensing surface, second topping-up pump and rectifying tower respectively through pipeline, and the said thick methyl ether condensing surface and second topping-up pump all are connected with thick methyl ether storage tank through pipeline.
Further, said vaporization tower and rectifying tower are packing tower.
Further, said vaporization tower bottom links to each other with vaporization tower reboiler one end through pipeline, and said vaporization tower bottom links to each other with the said vaporization tower reboiler the other end through pipeline.
Further, said vaporization tower and said gas heat exchanger are interconnected.
In sum; The preparation technology system of the utility model low power consuming dme is through increasing methanol preheater, methanol evaporator, flash tank and first topping-up pump; The heat energy of waste water, reaction gas is made full use of, use flash tank when bringing into operation, when system stable operation, use first topping-up pump in system; Improve thermo-efficiency, simplify flow process.
Description of drawings
Fig. 1 is the schematic diagram of the utility model embodiment.
Embodiment
For further understanding characteristic, technique means and the specific purposes that reached, the function of the utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the preparation technology system of the utility model low power consuming dme comprises methanol preheater 10, methyl alcohol well heater 20, methanol evaporator 30 and the flash tank 40 that links to each other along order through pipeline.The bottom of said flash tank 40 links to each other with first topping-up pump 50 through pipeline, and said first topping-up pump 50 links to each other with vaporization tower 60 tops through pipeline, and the top of said flash tank 40 links to each other with gas heat exchanger 70 and vaporization tower 60 tops through pipeline.
Said gas heat exchanger 70 links to each other with reactor drum 80 and vaporization tower reboiler 90 through pipeline, and wherein, the top of said reactor drum 80 all links to each other with gas heat exchanger 70 through pipeline with the bottom.Said vaporization tower 60 bottoms link to each other with vaporization tower reboiler 90 1 ends through pipeline; Said vaporization tower 60 bottoms link to each other with said vaporization tower reboiler 90 the other ends through pipeline, thereby the pipeline circulation that connects between said vaporization tower 60 and the said vaporization tower reboiler 90 is communicated.Said vaporization tower 60 links to each other with said methanol evaporator 30 earlier through pipeline and links to each other with methanol preheater 10.
Simultaneously, said vaporization tower reboiler 90 links to each other with said methyl alcohol well heater 20 earlier through pipeline, and then is connected with thick methyl ether preheater 100.Said thick methyl ether preheater 100 is connected with thick methyl ether condensing surface 110, second topping-up pump 130 and rectifying tower 140 respectively through pipeline, and the said thick methyl ether condensing surface 110 and second topping-up pump 130 all are connected with thick methyl ether storage tank 120 through pipeline.Wherein, said vaporization tower 60 is packing tower with rectifying tower 140.
The process of the preparation technology's systems produce dme through said low power consuming dme is following:
1., material benzenemethanol at first passes through said methanol preheater 10, the waste water of discharging with vaporization tower 60 is to said material benzenemethanol preheating; Then the said material benzenemethanol after the preheating is entered methyl alcohol well heater 20, use the reaction gas of discharging that the material benzenemethanol in the methyl alcohol well heater 20 is heated, again above-mentioned raw materials methyl alcohol is entered methanol evaporator 30 from reactor drum 80.
The waste water of discharging from vaporization tower 60 enters said methanol evaporator 30 through pipeline; And the material benzenemethanols in the said methanol evaporator 30 are preheated to 230 ~ 300 ℃; Make the liquid-vapor mixture in the methanol evaporator 30 get into flash tank 40; When the utility model brought into operation, the gas phase in the flash tank 40 got into reactor drum 80 tops from top exit; When the utility model operation was in steady state, the liquid phase in the flash tank 40 got into vaporization tower 60 tops through first topping-up pump 50, and the methanol steam that comes out from vaporization tower 60 gets into gas heat exchanger 70; Wherein, said waste water of discharging from vaporization tower 60 bottoms is after 90s through vaporization tower reboiler, enters again in the said vaporization tower 60 again, thereby can absorb the heat energy of the material benzenemethanol in the vaporization tower reboiler 90.
2., the gas mixture that comes out of autoreactor 80 is cooled to 220～300 ℃ at gas heat exchanger 70 earlier; Said gas mixture contains dme, methyl alcohol, water and hydrogen etc.; For said vaporization tower reboiler 90 and methyl alcohol well heater 20 provide heat, promptly reclaim heat energy with vaporization tower reboiler 90 and methyl alcohol well heater 20 successively again, then partial condensation and reclaim low grade heat energy in thick methyl ether preheater 100; Total condensation in thick methyl ether condensing surface 110 arrives thick methyl ether storage tank 120 at last and separates non-condensable gas again.Thick methyl ether in the said thick methyl ether storage tank 120 enters thick methyl ether preheater 100 again through second topping-up pump 130, in the said thick methyl ether preheater 100 the thick methyl ether vaporization of part back get into rectifying tower 140 middle and lower parts, after rectifying, form product.
In sum; The preparation technology system of the utility model low power consuming dme is through increasing methanol preheater 10, methanol evaporator 30, flash tank 40 and first topping-up pump 50; The heat energy of waste water, reaction gas is made full use of, use flash tank 40 when bringing into operation, when system stable operation, use first topping-up pump 50 in system; Improve thermo-efficiency, simplify flow process.
The above embodiment has only expressed a kind of embodiment of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with accompanying claims.
Claims (4)
1. the preparation technology system of a low power consuming dme; It is characterized in that: comprise gas heat exchanger, reactor drum, rectifying tower, pass through methanol preheater, methyl alcohol well heater, methanol evaporator and flash tank that pipeline links to each other along order; The top of said flash tank links to each other with gas heat exchanger and vaporization top of tower through pipeline; The bottom of said flash tank links to each other with first topping-up pump through pipeline; Said first topping-up pump links to each other with the vaporization top of tower through pipeline, and said gas heat exchanger links to each other with reactor drum and vaporization tower reboiler through pipeline, and said vaporization tower bottom links to each other with said vaporization tower reboiler through pipeline and is communicated with said methanol preheater; Said vaporization tower reboiler links to each other with said methyl alcohol well heater through pipeline; Said methyl alcohol well heater is connected with thick methyl ether preheater, and said thick methyl ether preheater is connected with thick methyl ether condensing surface, second topping-up pump and rectifying tower respectively through pipeline, and the said thick methyl ether condensing surface and second topping-up pump all are connected with thick methyl ether storage tank through pipeline.
2. the preparation technology system of low power consuming dme according to claim 1 is characterized in that: said vaporization tower and rectifying tower are packing tower.
3. the preparation technology system of low power consuming dme according to claim 1 is characterized in that: said vaporization tower bottom links to each other with vaporization tower reboiler one end through pipeline, and said vaporization tower bottom links to each other with the said vaporization tower reboiler the other end through pipeline.
4. the preparation technology system of low power consuming dme according to claim 1 is characterized in that: said vaporization tower and said gas heat exchanger are interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220166001XU CN202595004U (en) | 2012-04-19 | 2012-04-19 | Low energy consumption preparation process system of dimethyl ether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220166001XU CN202595004U (en) | 2012-04-19 | 2012-04-19 | Low energy consumption preparation process system of dimethyl ether |
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| CN202595004U true CN202595004U (en) | 2012-12-12 |
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| CN201220166001XU Expired - Lifetime CN202595004U (en) | 2012-04-19 | 2012-04-19 | Low energy consumption preparation process system of dimethyl ether |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659531A (en) * | 2012-04-19 | 2012-09-12 | 东莞市九丰化工有限公司 | Preparation process system and preparation method for low-energy-consumption dimethyl ether |
| CN103172501A (en) * | 2013-03-14 | 2013-06-26 | 天津天中福大科技发展有限公司 | Energy-conservation separation method and device for rectifying dimethyl ether |
-
2012
- 2012-04-19 CN CN201220166001XU patent/CN202595004U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659531A (en) * | 2012-04-19 | 2012-09-12 | 东莞市九丰化工有限公司 | Preparation process system and preparation method for low-energy-consumption dimethyl ether |
| CN103172501A (en) * | 2013-03-14 | 2013-06-26 | 天津天中福大科技发展有限公司 | Energy-conservation separation method and device for rectifying dimethyl ether |
| CN103172501B (en) * | 2013-03-14 | 2015-10-21 | 天津天中福大科技发展有限公司 | A kind of energy-saving separation method of dme rectifying and device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |