CN205216249U - Ethyl methyl ketone drying tower - Google Patents
Ethyl methyl ketone drying tower Download PDFInfo
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- CN205216249U CN205216249U CN201521098639.4U CN201521098639U CN205216249U CN 205216249 U CN205216249 U CN 205216249U CN 201521098639 U CN201521098639 U CN 201521098639U CN 205216249 U CN205216249 U CN 205216249U
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Abstract
The utility model provides an ethyl methyl ketone drying tower, including the bottom reboiler, overhead condenser and top reflux jar, wherein, ethyl methyl ketone drying tower's middle part feed inlet is connected with the first material feed pipeline who is used for the supply to come from the thick ethyl methyl ketone of the synthetic workshop section of ethyl methyl ketone, top reflux jar drain connection has the drain pipe, top reflux jar oil phase discharge port is connected with top of the tower reflux pipeline, the discharge gate is connected with ejection of compact pipeline at the bottom of the tower at the bottom of the tower, a serial communication port, the ethyl methyl ketone drying tower bottom reboiler is connected with comdenstion water feed pipeline and comdenstion water ejection of compact pipeline. The utility model discloses use the comdenstion water to replace steam and carry out the heat supply, by a wide margin reduction ethyl methyl ketone drying tower's energy consumption, practiced thrift the cost.
Description
Technical field
The utility model relates to a kind of MEK drying tower.
Background technology
In existing MEK preparation technology, comprise a MEK drying tower, the effect of this tower is the moisture removal will contained in the material of MEK synthesizing section, concrete technological process is that the thick MEK come by MEK synthesizing section sends into MEK drying tower, this tower uses hexane to make entrainer, utilize hexane and water azeotropic, water in thick MEK fraction is separated from tower top together with light component, drying tower backflash is entered after condensation, organic phase and aqueous phase layering in groove, organic phase as phegma to drying tower, incoagulable gas reclaims after hexane through condensation and is sent to torch, aqueous phase send sump.MEK out at the bottom of drying tower tower and unreacted sec-butyl alcohol send into MEK tower, and tower top steams product MEK, and after condensation, the MEK product obtaining purity >=99.5% send finished product storage tank.Unreacted sec-butyl alcohol out at the bottom of tower, sends sec-butyl alcohol refinement back to and recycles.In this technique, need to use steam to heat MEK drying tower and MEK tower, wherein, the column bottom temperature of MEK drying tower is about 90 DEG C, tower top temperature is about 66 DEG C, and the column bottom temperature of MEK tower is about 110 DEG C, tower top temperature is about 80 DEG C, all needs to use the steam of 1.0MPa to heat at the bottom of two tower towers.The steam consumption quantity of 100000 tons/year of methyl ethyl ketone plant MEK drying towers is about 4t/h, and the steam consumption quantity of a year is 32000 tons of steam, and energy consumption is higher.
Utility model content
The utility model provides a kind of MEK drying tower, successfully solves above problem, uses condensed water to substitute steam and carries out heat supply, significantly reduce the energy consumption of MEK drying tower, saved cost.
The utility model provides a kind of MEK drying tower, comprise bottom reboiler, overhead condenser and return tank of top of the tower, wherein, the middle part charging aperture of MEK drying tower is connected with the first material feeding pipeline for supplying the thick MEK from MEK synthesizing section, return tank of top of the tower discharge outlet is connected with drainpipe, return tank of top of the tower oil phase outlet is connected with overhead reflux pipeline, discharging opening at the bottom of tower is connected with discharging pipeline at the bottom of tower, it is characterized in that, MEK drying tower bottom reboiler is connected with condensed water feeding line and condensed water discharging pipeline.
In the utility model, preferably, the condensed water feeding line of described MEK bottom reboiler connects the discharging opening of condensate water pot; More preferably, the condensed water feeding line of described MEK bottom reboiler connects the discharging opening of the MEK tower bottom reboiler condensed water for separating of MEK and unreacted sec-butyl alcohol.
Above-mentioned condensate water pot is the collection container of condensed water after low-pressure steam and middle pressure steam heat exchange, wherein, condensed water comprises each condensed water of tower bottom steam reboiler of methyl ethyl ketone plant and/or the condensed water of vapor preheater, and the condensate temperature provided is generally 120 DEG C ~ 180 DEG C.
In the utility model, preferably, be provided with another reboiler (the second reboiler) at the bottom of described MEK drying tower tower, another reboiler is connected with steam feed pipeline and condensed water discharging pipeline.
In the utility model, preferably, the condensed water discharging pipeline of the dry bottom reboiler of described MEK connects the charging aperture of condensate water pot.More preferably, the condensed water discharging pipeline of another reboiler (the second reboiler) at the bottom of described MEK drying tower connects the charging aperture of condensate water pot.
In the utility model, the condensate portion that the condensed water of operative installations condensate water pot or MEK tower bottom reboiler are discharged substitutes or even the steam of replacing whole MEK drying tower bottom reboiler heats, significantly can reduce the energy consumption of MEK drying tower, annual economizes on the use of funds more than 6,000,000 yuan, significantly reduces the production cost of MEK.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of embodiment of the utility model MEK drying tower.
Fig. 2 is the schematic diagram of the another kind of embodiment of the utility model MEK drying tower.
Fig. 3 is showing the MEK drying tower with Fig. 2 of the annexation of MEK tower.
Wherein, 1 is material feeding pipeline, 2 is MEK drying tower main body, 3 is overhead condenser, 4 is return tank of top of the tower, 5 is return tank of top of the tower flowing line, 6 is overhead reflux pipeline, 7 is bottom reboiler, 8 is bottom reboiler condensed water feeding line, 9 is bottom reboiler condensed water discharging pipeline, 10 is another reboiler at the bottom of tower, 11 is another reboiler steam feeding line at the bottom of tower, 12 is another reboiler condensed water discharging pipeline at the bottom of tower, 13 is materials at bottom of tower discharging pipeline, 14 is MEK tower main body, 15 is MEK column overhead condenser, 16 is MEK column overhead return tank, 17 is MEK column overhead reflux pipeline, 18 is that pipeline extracted out by MEK column overhead return tank material, 19 is MEK tower bottom reboiler, 20 is MEK tower bottom reboiler steam feed pipeline, 21 is MEK tower bottom reboiler condensed water discharging pipeline, 22 is that MEK tower materials at bottom of tower extracts pipeline out.
Detailed description of the invention
As shown in Figure 1, the utility model provides a kind of MEK drying tower, it comprises MEK drying tower main body 2, it is connected with the material feeding pipeline 1 for supplying the thick MEK from MEK synthesizing section, tower top is provided with MEK drying tower overhead condenser 3 and MEK drying tower return tank of top of the tower 4, discharging pipeline 13 at the bottom of bottom reboiler 7 and tower is provided with at the bottom of tower, MEK drying tower return tank of top of the tower is provided with flowing line 5 and overhead reflux pipeline 6, bottom reboiler 7 is connected with condensed water feeding line 8 and condensed water discharging pipeline 9.
As shown in Figure 2, MEK drying tower of the present utility model can comprise another reboiler condensed water discharging pipeline 12 at the bottom of another reboiler steam feeding line 11 at the bottom of another reboiler 10, tower at the bottom of tower and tower in addition on the basis of Fig. 1.
As shown in Figure 3, the materials at bottom of tower discharging pipeline of Fig. 2 connects the charging aperture of MEK tower main body 14, MEK tower comprises MEK column overhead condenser 15, MEK column overhead return tank 16, MEK column overhead reflux pipeline 17, pipeline 18 extracted out by MEK column overhead return tank material, MEK tower bottom reboiler 19, MEK tower bottom reboiler steam feed pipeline 20, MEK tower bottom reboiler condensed water discharging pipeline 21, MEK tower materials at bottom of tower extracts pipeline 22 out, wherein MEK tower bottom reboiler condensed water discharging pipeline 21 is connected with another reboiler steam feeding line 11 at the bottom of MEK drying tower.
Embodiment 1
As shown in Figure 1, the material of MEK synthesizing section enters MEK drying tower main body 2 by MEK drying tower material feeding pipeline 1, in the tower top temperature 66 DEG C of MEK drying tower, azeotropic distillation under the condition that column bottom temperature is 95 DEG C, the condensed water feeding line 8 that bottom reboiler 7 connects is connected with the condensation-water drain of methyl ethyl ketone plant condensate water pot, condensed water enters MEK drying tower reboiler with the speed of 10t/h, and the condensed water after heat exchange is back to condensate water pot by condensed water discharging pipeline 9.Hexane and sec-butyl alcohol, MEK, water, sec-butyl alcohol three kinds of azeotropic mixtures steam to tower top, MEK and unreacted sec-butyl alcohol enter to discharge from discharging pipeline 13 at the bottom of MEK drying tower tower at the bottom of tower and send into MEK tower (not shown) and obtain refining MEK, the sec-butyl alcohol that tower top steams, MEK, water, sec-butyl alcohol are through condenser 3 condensation, organic phase and aqueous phase is divided into by return tank of top of the tower 4, aqueous phase send sump by return tank of top of the tower flowing line 5, and organic phase carries out overhead reflux by overhead reflux pipeline 6.
Embodiment 2
As shown in Figure 2, the material of MEK synthesizing section enters MEK drying tower main body 2 by MEK drying tower material feeding pipeline 1, in the tower top temperature 66 DEG C of MEK drying tower, azeotropic distillation under the condition that column bottom temperature is 95 DEG C, the condensed water feeding line 8 that bottom reboiler 7 connects is connected with the condensation-water drain of MEK tower bottom reboiler, condensed water enters MEK drying tower reboiler 7 with the speed of 5t/h, the steam feed pipeline 11 that another reboiler 10 at the bottom of tower connects is connected with the outlet of methyl ethyl ketone plant steam supply Trunk Line, steam enters MEK drying tower reboiler 7 with the speed of 2t/h, condensed water after two reboiler heat exchange is back to condensate water pot by condensed water discharging pipeline 9 or 12.Hexane and sec-butyl alcohol, MEK, water, sec-butyl alcohol three kinds of azeotropic mixtures steam to tower top, MEK and unreacted sec-butyl alcohol enter to discharge from discharging pipeline 13 at the bottom of MEK drying tower tower at the bottom of tower and send into MEK tower 14 and obtain refining MEK, the sec-butyl alcohol that tower top steams, MEK, water, sec-butyl alcohol are through condenser 3 condensation, organic phase and aqueous phase is divided into by return tank of top of the tower 4, aqueous phase send sump by return tank of top of the tower flowing line 5, and organic phase carries out overhead reflux by overhead reflux pipeline 6.
Comparative example 1
The material of MEK synthesizing section enters MEK drying tower main body 2 by MEK drying tower material feeding pipeline 1, in the tower top temperature 66 DEG C of MEK drying tower, azeotropic distillation under the condition that column bottom temperature is 95 DEG C, the steam feed pipeline 8 that bottom reboiler 7 connects is connected with the outlet of methyl ethyl ketone plant steam supply Trunk Line, steam enters MEK drying tower reboiler with the speed of 4t/h, and the condensed water after heat exchange is back to condensate water pot by condensed water discharging pipeline 9.Hexane and sec-butyl alcohol, MEK, water, sec-butyl alcohol three kinds of azeotropic mixtures steam to tower top, MEK and unreacted sec-butyl alcohol enter to discharge from discharging pipeline 13 at the bottom of MEK drying tower tower at the bottom of tower and send into MEK tower and obtain refining MEK, the sec-butyl alcohol that tower top steams, MEK, water, sec-butyl alcohol are through condenser 3 condensation, organic phase and aqueous phase is divided into by return tank of top of the tower 4, aqueous phase send sump by return tank of top of the tower flowing line 5, and organic phase carries out overhead reflux by overhead reflux pipeline 6.
Compared with comparative example 1, the tower bottom steam consumption of embodiment 1 reduces 4th/h, and cost at least saves for 6,000,000/year, and the tower bottom steam consumption of embodiment 2 decreases 2t/h, and cost at least saves 3,000,000 yuan/year.
More than specifically illustrate the MEK drying tower of the present embodiment; but be understandable that, those of ordinary skill in the art are using the various modification that the basis of novel open scope is made; do not departing from the utility model main scope, can think and fall into protection domain of the present utility model.
Claims (8)
1. a MEK drying tower, comprise bottom reboiler, overhead condenser and return tank of top of the tower, wherein, the middle part charging aperture of MEK drying tower is connected with the first material feeding pipeline for supplying the thick MEK from MEK synthesizing section, return tank of top of the tower discharge outlet is connected with drainpipe, return tank of top of the tower oil phase outlet is connected with overhead reflux pipeline, discharging opening at the bottom of tower is connected with discharging pipeline at the bottom of tower, it is characterized in that, MEK drying tower bottom reboiler is connected with condensed water feeding line and condensed water discharging pipeline.
2. MEK drying tower according to claim 1, is characterized in that, the condensed water feeding line of described MEK bottom reboiler connects the discharging opening of condensate water pot.
3. MEK drying tower according to claim 1, is characterized in that, the condensed water feeding line of described MEK bottom reboiler connects the discharging opening of the MEK tower bottom reboiler condensed water for separating of MEK and unreacted sec-butyl alcohol.
4. the MEK drying tower according to any one of claim 1-3, is characterized in that, is provided with another reboiler at the bottom of described MEK drying tower tower.
5. MEK drying tower according to claim 4, is characterized in that, described another reboiler at the bottom of MEK drying tower tower is connected with steam feed pipeline and condensed water discharging pipeline.
6. MEK drying tower according to claim 1 and 2, is characterized in that, the condensed water discharging pipeline of the dry bottom reboiler of described MEK connects the charging aperture of condensate water pot.
7. MEK drying tower according to claim 4, is characterized in that, the condensed water discharging pipeline of another reboiler at the bottom of described MEK drying tower connects the charging aperture of condensate water pot.
8. MEK drying tower according to claim 5, is characterized in that, the condensed water discharging pipeline of another reboiler at the bottom of described MEK drying tower connects the charging aperture of condensate water pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521098639.4U CN205216249U (en) | 2015-12-24 | 2015-12-24 | Ethyl methyl ketone drying tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521098639.4U CN205216249U (en) | 2015-12-24 | 2015-12-24 | Ethyl methyl ketone drying tower |
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| CN205216249U true CN205216249U (en) | 2016-05-11 |
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| CN201521098639.4U Active CN205216249U (en) | 2015-12-24 | 2015-12-24 | Ethyl methyl ketone drying tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106943765A (en) * | 2017-04-06 | 2017-07-14 | 胡玉娴 | MEK drying tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106943765A (en) * | 2017-04-06 | 2017-07-14 | 胡玉娴 | MEK drying tower |
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