CN201634517U - Deep aniline removal device in water - Google Patents
Deep aniline removal device in water Download PDFInfo
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- CN201634517U CN201634517U CN 200920209549 CN200920209549U CN201634517U CN 201634517 U CN201634517 U CN 201634517U CN 200920209549 CN200920209549 CN 200920209549 CN 200920209549 U CN200920209549 U CN 200920209549U CN 201634517 U CN201634517 U CN 201634517U
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- water
- reverse osmosis
- osmosis membrane
- aniline
- membrane system
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Abstract
The utility model discloses a deep aniline removal device in water, which comprises a. a primary liquid tank, b. a liquid inlet pump, c. two sets of bag type filters in alternative operation, d. a phase separator used for two-phase (aniline and water) separation (the phase separator has the effect of condensing microcosmic liquid drips in the mixed liquid, after the condensed liquid drips carry out still standing and delamination, aniline is discharged from a system from a heavy-phase outlet, a saturated aniline water solution is discharged from a light-phase outlet and enters reverse osmosis membrane systems through being pressurized by a high-pressure pump.), e, two sets of reverse osmosis membrane systems in alternative operation (after the separation through reverse osmosis membranes, water containing a trace amount of aniline is discharged from a water producing opening of the reverse osmosis membrane systems, the concentrated aniline flows back to the primary liquid tank for carrying out secondary separation), f, a set of conventional cleaning device, and g. a set of chemical cleaning device. The utility model has the advantages of low energy consumption, high separation precision, high automation degree and the like.
Description
Technical field
The utility model relates in the aniline Chemical Manufacture device that thoroughly removes of aniline in the liquid of aniline dehydration tower upper strata, the device of deep removal aniline in particularly a kind of water.
Background technology
Aniline is important organic raw material, is widely used in urethane, rubber ingredients, dyes pigment, industrial circle such as agricultural chemicals, medicine and special fibre, and wherein mainly be the raw material MDI that is used to prepare urethane.Present global Aniline Production technology mainly adopts oil of mirbane shortening method to produce, and China then all adopts this method to produce.Oil of mirbane shortening method mainly is made up of following productive unit, and selexol process is converted into hydrogen unit, nitration mixture arrangement unit, oil of mirbane unit, aniline unit and spent acid and carries dense unit.In the aniline unit, oil of mirbane elder generation and hydrogen generation reduction reaction, generate aniline, the mixed solution of oil of mirbane and water, this mixed solution is introduced into one and presorts tower and carry out preliminary gravity settling separation, the upper strata mixed solution of presorting in the tower is the aniline-water solution of 5-6%, subnatant enters the aniline dehydration tower and carries out fractionation by distillation, the phlegma part of the cat head azeotrope of aniline dehydration tower is at the trim the top of column of aniline dehydration tower, another part phlegma enters the downstream together with the upper strata mixed solution water of presorting tower and carries out processed, enter rectifying tower through the aniline still liquid after the dehydration and remove organism, become the aniline product.
At present handle main vaporizing extract process and the extraction process of adopting to presorting the upper strata mixed solution (aniline-water solution of 5-6%) in the tower and the phlegma (water and aniline azeotrope) of dehydration column overhead.Wherein the stripping ratio juris is: for the volatile matter that dissolves each other with water, utilize it under the vapor liquid equilibrium condition, solubleness in the gas phase is greater than this characteristic of the solubleness in liquid phase, make it under boiling point (temperature between water and volatile matter two boiling points) by the steam direct heating, be enriched in gas phase according to a certain percentage.Studies show that: 4% aniline solution is by behind the stripping tower, aniline concentration can reach about 7% in the upper strata vapor phase in the stripping tower, aniline concentration can be reduced to about 500ppm in lower floor's aniline solution, and aniline solution per ton need consume the steam of 0.2t and the water of condensation of 10t, and energy consumption is bigger.Extraction process utilizes aniline to develop in the solubleness that the solubleness of organic solvent is far longer than in water, and the extraction agent that aniline waste water is commonly used has toluene and P204 at present.The toluene abstraction technique is comparative maturity, but needs multi-stage solvent extraction usually, and proportioning is also bigger, extracts back aniline and needs fractionation by distillation usually separating of extraction agent, and running cost is higher; One step of P204 extraction finishes, and need add TOP usually and make synergic reagent, and effect of extracting is fine, but only limits to laboratory stage at present, and in the extraction process, loss of extractant is very big, and cost is also than higher.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of prior art, the device of deep removal aniline in a kind of water is provided, adopt the aniline in this device deep removal water, have the advantage that energy consumption is low, separation accuracy is high and level of automation is high, opened up a kind of new approaches for dehydration tower upper strata liquid aniline in the aniline Chemical Manufacture separates.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
Deep removal aniline device in a kind of water, it comprises:
A. original fluid container that is used to regulate the mixed solution water quality and the water yield, this original fluid container has a liquid outlet;
B. deep bed filter is used for removing the particulate matter of mixed solution, and described deep bed filter has liquid inlet and liquid outlet;
C. a liquid feeding pump, this liquid feeding pump is communicated with the liquid outlet of original fluid container and the liquid inlet of deep bed filter by pipeline, is used for entering deep bed filter after the mixed solution pressurization with original fluid container;
D. a phase separator, this phase separator has a water-in, light phase export and heavy out, wherein water-in is communicated with the liquid outlet of described deep bed filter by pipeline, this phase separator has the effect of microscopic droplets in the cohesion mixed solution, drop after the cohesion is through behind the standing demix, aniline is discharged system from heavy out, and saturated aniline-water solution is discharged from light phase export;
E. reverse osmosis membrane system, this reverse osmosis membrane system has a water-in, produces the mouth of a river and concentrated water spout, the water-in of reverse osmosis membrane system enters reverse osmosis membrane system from the saturated aniline-water solution that light phase export is discharged by the light phase export of high-pressure pump and pipeline connection phase separator after the high-pressure pump pressurization; Reverse osmosis membrane has the characteristic that selectivity stops the aniline molecule to see through, through after the reverse osmosis membrane separation, contain trace aniline water (＜100ppm) produce the mouth of a river to discharge from the reverse osmosis membrane system, enter the sewage disposal workshop by pipeline, the aniline that is concentrated is back to original fluid container by concentrated water spout and pipeline and carries out secondary separation.
Deep bed filter of the present utility model is two covers, and the liquid inlet of every suit deep bed filter is by the liquid outlet of liquid feeding pump and pipeline connection original fluid container, two sack type strainer alternate runs.
Reverse osmosis membrane system of the present utility model is two covers, and the water-in of every suit reverse osmosis membrane system is by the light phase export of high-pressure pump and pipeline connection phase separator, and two overlap the reverse osmosis membrane system alternate runs.
Pipeline between the water-in of described high-pressure pump of the utility model and reverse osmosis membrane system is provided with by-pass valve control, the pipeline in the product mouth of a river of reverse osmosis membrane system to sewage disposal workshop is provided with by-pass valve control, and the concentrated water spout of described reverse osmosis membrane system to the pipeline between the original fluid container is provided with by-pass valve control.
The utility model also comprises the reverse osmosis membrane system washing unit, is used for reverse osmosis membrane system is carried out normal developing regeneration; This reverse osmosis membrane system washing unit comprises a cleaning water tank and a scavenging pump, have a water outlet and water-in on this cleaning water tank, the product mouth of a river of reverse osmosis membrane system connects the water-in that cleans water tank by plurality of control valves door and pipeline, and the concentrated water spout of reverse osmosis membrane system connects the water-in that cleans water tank by by-pass valve control and pipeline; The water-in of scavenging pump connects the water outlet that cleans on the water tank by pipeline, and the water outlet of scavenging pump is divided into two, and one connects the water-in of reverse osmosis membrane system by by-pass valve control, and another connects original fluid container by by-pass valve control and pipeline.
The utility model also comprises the reverse osmosis membrane system chemically-cleaning device, is used for reverse osmosis membrane system is carried out matting regeneration; This reverse osmosis membrane system chemically-cleaning device comprises matting water tank and chemical cleaning pump, have a water outlet and water-in on this matting water tank, the product mouth of a river of reverse osmosis membrane system connects the water-in of matting water tank by by-pass valve control and pipeline, and the concentrated water spout of reverse osmosis membrane system is connected to water-in on the matting water tank by by-pass valve control and pipeline; The water-in of chemical cleaning pump connects water outlet on the matting water tank by pipeline, and the water outlet of chemical cleaning pump is divided into two, and one connects the water-in of reverse osmosis membrane system by by-pass valve control and pipeline, and another connects original fluid container by by-pass valve control and pipeline.
Useful achievement of the present utility model is:
One, reclaims valuable material, reduce the quantity discharged of pollutent.Dehydration tower upper strata mixed solution aniline concentration is about 5-6%, after phase separator and reverse osmosis membrane system processing, go out water-content and reduce to below the 100ppm, simultaneously aniline in phase separator after the layering concentration can be back to rectifying tower and recycle up to 94-95%.
Two, energy consumption is low, the level of automation height.Phase separator is removed aniline and is belonged to static separation, the operational condition gentleness, and the reverse osmosis membrane high pressure pump drive, but treatment capacity is less, and energy consumption is lower; Phase separator and reverse osmosis membrane operation can be fully by PLC control or DCS control, level of automation height.
Description of drawings
Fig. 1 is the device overall flow synoptic diagram of deep removal aniline in the water of the present utility model.
Fig. 2 is the structural representation of the device of deep removal aniline in the water of the present utility model.
Embodiment
For technique means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete example, further set forth the utility model.
Referring to Fig. 1, the liquid outlet 110 that is used for regulating the original fluid container 100 of the mixed solution water quality and the water yield is communicated with liquid feeding pump 200 by liquid feeding pump 200 and pipeline and is used for entering two sack type strainers 300,300a after the mixed solution pressurization with original fluid container 100 with two sack type strainers 300, the liquid inlet 310 of 300a, 310a, two sack type strainers 300,300a alternate run are used for removing the particulate matter of mixed solution.
The liquid outlet 320 of two sack type strainers 300,300a, 320a are communicated with water-in 410 on the phase separator 400 by pipeline, remove to enter phase separator 400 after the mixed solution of particulate matter and carry out two and be separated.This phase separator 400 has the effect of microscopic droplets in the cohesion mixed solution, and the drop after the cohesion is through behind the standing demix, and aniline is from heavy out 430 discharge systems, and saturated aniline-water solution is discharged from light phase export 420.The light phase export 420 of phase separator 400 by high-pressure pump and by-pass valve control 540,540a and pipeline respectively with two cover reverse osmosis membrane systems 500,500a be communicated with water-in 510,510a is communicated with.Two cover reverse osmosis membrane systems 500,500a alternate run, the reverse osmosis membrane that two cover reverse osmosis membrane systems 500,500a adopt has the characteristic that selectivity stops the aniline molecule to see through, through after the reverse osmosis membrane separation, contain trace aniline water (＜100ppm) discharge from the product mouth of a river 530,530a and the by-pass valve controls 21,22,35 of two cover reverse osmosis membrane systems 500,500a, enter the sewage disposal workshop.The aniline that is concentrated is back to original fluid container 100 by concentrated water spout 520,520a and pipeline and by-pass valve control 29,25 and carries out secondary separation.
Reverse osmosis membrane system washing unit 700 is used for reverse osmosis membrane system is carried out normal developing regeneration; This reverse osmosis membrane system washing unit 700 comprises a cleaning water tank 610 and a scavenging pump 620, the product mouth of a river 530, the 530a of two cover reverse osmosis membrane systems 500,500a connect the water-in 611 that cleans water tank 310 by by- pass valve control 23,24,34,37 and pipeline, and the concentrated water spout 520a of reverse osmosis membrane system 500a is connected between the by-pass valve control 34,37 by by-pass valve control 26.The water-in 621 of scavenging pump 620 connects the water outlet 612 that cleans on the water tank 610 by pipeline, the water outlet 622 of scavenging pump 620 is divided into two, one meets two cover reverse osmosis membrane systems 500, the water-ins 510 of 500a, 510a by by-pass valve control 27,17,18, and another connects original fluid container 100 by by-pass valve control 28 and pipeline.
Reverse osmosis membrane system chemically-cleaning device 700 is used for reverse osmosis membrane system is carried out matting regeneration; This reverse osmosis membrane system chemically-cleaning device 700 comprises matting water tank 710 and chemical cleaning pump 720, two cover reverse osmosis membrane systems 500, the product mouth of a river 530 of 500a, 530a pass through the water-in 711 of by- pass valve control 23,24,33,36 and pipeline connection matting water tank 710, and the concentrated water spout 520 of reverse osmosis membrane system 500 is connected between the by-pass valve control 33,36 by by-pass valve control 30 and pipeline; The water-in 721 of chemical cleaning pump 720 connects water outlet 711 on the matting water tank 710 by pipeline, the water outlet 722 of chemical cleaning pump 720 is divided into two, one meets two cover reverse osmosis membrane systems 500, the water-ins 510 of 500a, 510a by by- pass valve control 31,17,18, and another connects original fluid container 100 by by-pass valve control 32 and pipeline.
The workflow of said apparatus is: the bipolar mixture liquid of aniline and water is introduced into original fluid container 100, after liquid feeding pump 200 pressurizations, enter two cover alternate run deep bed filter 300,300a carries out pre-filtering, remove the particulate matter in the water inlet, the two-phase mixed solution enters phase separator 400 and separates then, phase separator 400 has the cohesion properties of Microscopic Particles, the aniline of disperse phase condenses at this, standing demix then, aniline density is discharged from heavy phase outlet 430 more greatly, saturated aniline-water solution density is slightly little to enter reverse osmosis membrane system 500 from light phase export 420 discharges and after high-pressure pump 800 pressurizations, 500a, reverse osmosis membrane stops the aniline molecule to see through and allows water molecules see through, see through the self-produced mouth of a river 530 of water molecules of reverse osmosis membrane, 530a discharges, and the aniline-water solution that is concentrated reaches hypersaturated state by concentrated water spout 520,520a is back to original fluid container 1 and carries out secondary separation.
Two cover reverse osmosis membrane systems 500,500a have three kinds of operational modes: normally produce water, conventional cleaning, matting.Reverse osmosis membrane, owing to reasons such as concentration polarizations, produces water flux and descends when producing one section in water after (about a week) normal, need carry out routine and clean, and promptly reverse osmosis membrane is carried out big flow washes with producing water, and flush time is about 30 minutes at every turn.But when film working time long seriously polluted pollutions, conventional cleaning can not make film return to initial flux, starts matting and promptly carries out wash cycles with the hydrochloric acid of pH=2, and the matting time is about 2h at every turn.
Be example with accompanying drawing 2 below, specify the operational mode of reverse osmosis: during initial launch, start a wherein cover reverse osmosis membrane system 500, after operation for some time, the product water flux of reverse osmosis membrane system 500 descends, enable and carry out the routine cleaning, start another set of reverse osmosis membrane system 500a simultaneously, under next state, corresponding by-pass valve control state is as follows, by-pass valve control 17,20,27 is opened, and by- pass valve control 18,19,28,31 closes, and the gently mutually saturated aniline-water solution of phase separator 400 is advanced in the reverse osmosis system 500a.The product water that cleans in the water tank 610 advances reverse osmosis system 500, and at this moment by- pass valve control 25,30,33,34,37 is opened, and by- pass valve control 26,29,36 closes, and makes the dense water of reverse osmosis system 500 return cleaning water tank 610, and the concentrate recirculation of reverse osmosis system 500a is to original fluid container 1; Control valves 22,23,35 are opened, and by-pass valve control 21,24 closes, and make reverse osmosis system 500 produce water and return cleaning water tank 610, and 500a produces water and drains into the sewage disposal workshop; When flushing reverse osmosis system 500 after about 30 minutes, opening controlling valve door 28, closing control valve 27 are back to original fluid container 1 with the water that cleans water tank 610.Because the reverse osmosis membrane system design symmetry is better, when starting the matting program and cleaning reverse osmosis membrane system 500 or 500a and during the conventional 500a of cleaning, when can cleaning reverse osmosis membrane system 500 with reference to routine, the keying state of by-pass valve control is provided with.
[0029] adopt this tripping device to test, wherein feed liquor aniline concentration is 5%, and running at normal temperature is 3.7% by phase separator 400 back aniline concentration, extremely near state of saturation 3.65%; The product water flux of reverse osmosis membrane system is 12L/m
2H, producing the water cycle was 1 week, and reverse osmosis membrane system produces that aniline concentration reaches 65ppm in the water, and dense water concentration is about 7%, reaches hypersaturated state, and is back to original fluid container 100 and carries out secondary separation, finishes the deep removal of aniline in the water.Carry out conventional the cleaning as required after producing the water end, conventional cleaning flux is 25L/m
2H can return to initial design values 12L/m through the conventional back product water flux that cleans
2H; When reverse osmosis system moves one month, carry out matting, produce water flux after the matting and can return to design load 12L/m
2H.
Claims (6)
1. the device of deep removal aniline in the water is characterized in that, comprising:
A. original fluid container that is used to regulate the mixed solution water quality and the water yield, this original fluid container has a liquid outlet;
B. deep bed filter is used for removing the particulate matter of mixed solution, and described deep bed filter has liquid inlet and liquid outlet;
C. a liquid feeding pump, this liquid feeding pump is communicated with the liquid outlet of original fluid container and the liquid inlet of deep bed filter by pipeline, is used for entering deep bed filter after the mixed solution pressurization with original fluid container;
D. a phase separator, this phase separator has a water-in, light phase export and heavy out, wherein water-in is communicated with the liquid outlet of described deep bed filter by pipeline, this phase separator has the effect of microscopic droplets in the cohesion mixed solution, drop after the cohesion is through behind the standing demix, aniline is discharged system from heavy out, and saturated aniline-water solution is discharged from light phase export;
E. reverse osmosis membrane system, this reverse osmosis membrane system has a water-in, produces the mouth of a river and concentrated water spout, the water-in of reverse osmosis membrane system enters reverse osmosis membrane system from the saturated aniline-water solution that light phase export is discharged by the light phase export of high-pressure pump and pipeline connection phase separator after the high-pressure pump pressurization; Reverse osmosis membrane has the characteristic that selectivity stops the aniline molecule to see through, through after the reverse osmosis membrane separation, contain＜water of 100ppm aniline produces the mouth of a river from the reverse osmosis membrane system and discharges, enter the sewage disposal workshop by pipeline, the aniline that is concentrated is back to original fluid container by concentrated water spout and pipeline and carries out secondary separation.
2. the device of deep removal aniline is characterized in that in the water as claimed in claim 1, and described deep bed filter is two covers, and the liquid inlet of every suit deep bed filter is by the liquid outlet of liquid feeding pump and pipeline connection original fluid container, two sack type strainer alternate runs.
3. the device of deep removal aniline in the water as claimed in claim 1 or 2, it is characterized in that, described reverse osmosis membrane system is two covers, and the water-in of every suit reverse osmosis membrane system is by the light phase export of high-pressure pump and pipeline connection phase separator, and two overlap the reverse osmosis membrane system alternate runs.
4. the device of deep removal aniline in the water as claimed in claim 3, it is characterized in that, pipeline between the water-in of described high-pressure pump and reverse osmosis membrane system is provided with by-pass valve control, the pipeline in the product mouth of a river of reverse osmosis membrane system to sewage disposal workshop is provided with by-pass valve control, and the concentrated water spout of described reverse osmosis membrane system to the pipeline between the original fluid container is provided with by-pass valve control.
5. the device of deep removal aniline is characterized in that in the water as claimed in claim 4, also comprises the reverse osmosis membrane system washing unit, is used for reverse osmosis membrane system is carried out normal developing regeneration; This reverse osmosis membrane system washing unit comprises a cleaning water tank and a scavenging pump, have a water outlet and water-in on this cleaning water tank, the product mouth of a river of reverse osmosis membrane system connects the water-in that cleans water tank by plurality of control valves door and pipeline, and the concentrated water spout of reverse osmosis membrane system connects the water-in that cleans water tank by by-pass valve control and pipeline; The water-in of scavenging pump connects the water outlet that cleans on the water tank by pipeline, and the water outlet of scavenging pump is divided into two, and one connects the water-in of reverse osmosis membrane system by by-pass valve control, and another connects original fluid container by by-pass valve control and pipeline.
6. the device of deep removal aniline is characterized in that in the water as claimed in claim 5, also comprises the reverse osmosis membrane system chemically-cleaning device, is used for reverse osmosis membrane system is carried out matting regeneration; This reverse osmosis membrane system chemically-cleaning device comprises matting water tank and chemical cleaning pump, have a water outlet and water-in on this matting water tank, the product mouth of a river of reverse osmosis membrane system connects the water-in of matting water tank by by-pass valve control and pipeline, and the concentrated water spout of reverse osmosis membrane system is connected to water-in on the matting water tank by by-pass valve control and pipeline; The water-in of chemical cleaning pump connects water outlet on the matting water tank by pipeline, and the water outlet of chemical cleaning pump is divided into two, and one connects the water-in of reverse osmosis membrane system by by-pass valve control and pipeline, and another connects original fluid container by by-pass valve control and pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920209549 CN201634517U (en) | 2009-09-11 | 2009-09-11 | Deep aniline removal device in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920209549 CN201634517U (en) | 2009-09-11 | 2009-09-11 | Deep aniline removal device in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201634517U true CN201634517U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920209549 Expired - Lifetime CN201634517U (en) | 2009-09-11 | 2009-09-11 | Deep aniline removal device in water |
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| CN (1) | CN201634517U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020366B (en) * | 2009-09-11 | 2013-01-02 | 上海安赐机械设备有限公司 | Method and device for deeply removing aniline from water |
| CN104926663A (en) * | 2015-05-28 | 2015-09-23 | 国药集团化学试剂有限公司 | Preparation method for high-purity aniline containing trace nitrocompound |
| CN111153512A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Method and device for treating wastewater containing benzene series and application thereof |
-
2009
- 2009-09-11 CN CN 200920209549 patent/CN201634517U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020366B (en) * | 2009-09-11 | 2013-01-02 | 上海安赐机械设备有限公司 | Method and device for deeply removing aniline from water |
| CN104926663A (en) * | 2015-05-28 | 2015-09-23 | 国药集团化学试剂有限公司 | Preparation method for high-purity aniline containing trace nitrocompound |
| CN111153512A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Method and device for treating wastewater containing benzene series and application thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101117 Effective date of abandoning: 20090911 |
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| RGAV | Abandon patent right to avoid regrant |