CN1775730A - Alkali decremental waste water terephthalic acid recovery device - Google Patents
Alkali decremental waste water terephthalic acid recovery device Download PDFInfo
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- CN1775730A CN1775730A CNA200510061664XA CN200510061664A CN1775730A CN 1775730 A CN1775730 A CN 1775730A CN A200510061664X A CNA200510061664X A CN A200510061664XA CN 200510061664 A CN200510061664 A CN 200510061664A CN 1775730 A CN1775730 A CN 1775730A
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Abstract
The invention discloses a reacting device for recovering terephatalic acid from alkali reduction waste water, continuously producing in a form of using water in pipeline to cool the jacketed reactor in the whole course, and mainly comprising: waste water pumping system, fine filtering system, pH testing system, acid separation system, anti-precipitating system, water cooling heat exchanging system, solid-liquid separating system, and computer automatic control system. And the whole system closely runs and has no secondary pollution and solves the pollution and recycling of the alkali reduction waste- water. The invention has the advantages of simple process, less occupied land, low investment, operating automatization, terephatalic acid recovery > 95%, terephatalic acid purity > 95%, and heat recovery of waste water up to 60%.
Description
Technical field
The present invention relates to a kind of alkali decrement waste water terephthaldehyde acid-restoring plant.
Background technology
In the alkali decrement waste water of terylene textile finishing production technique, there is a large amount of para-phthalic sodiums to exist, wastewater temperature is about 100 ℃, the discharging of waste water is discharged into the terephthalic acid of a large amount of recyclable utilizations and waste water heat in the physical environment and goes, serious environment pollution not only, also caused a large amount of circulating resources to run off, financial loss is very big.
In line with comprehensively, comprehensively, effectively solve the alkali decrement waste water pollution situation, reduce the COD content of sewage discharge to greatest extent, para-phthalic sodium in the waste water is converted into the terephthalic acid that utilizes value, make full use of waste vapour heat energy, eliminate the state of harm social environment, and be that society creates the certain economic repayment.
Summary of the invention
Technical process of the present invention is schematically as follows:
Waste water pumping system → fine filtering system → canalization acid out system comprises: tubulation acid out, chuck water coolant reclaim heat energy, the online detection of PH, add sour device, mix device → multi-functional automatic filtration solid-liquid separation system comprises: filter, washing, dehydration, wet shape terephthalic acid packing, depleted filtrate neutralization: detection, reuse, discharging → computer control system
The purpose of this invention is to provide a kind of alkali decrement waste water terephthaldehyde acid-restoring plant.
A kind of alkali decrement waste water terephthaldehyde acid recovery reaction unit: the waste water import is through waste water transferpump and first strainer, join with first import of vertical tubulation section reactor top; First filter inlet with join through second strainer and first import of vertical tubulation section reactor top; The outlet of waste water transferpump is joined with first circulation control valve and second import of vertical reactor top; The vertical reactor top first sour import and first adds sour control valve, sour volume pump and sour storage tank and joins; The vertical reactor first tubulation pars infrasegmentalis, the second sour import and the second sour control valve, sour volume pump and sour storage tank join; The vertical reactor lower part outlet and second circulation control valve and the import of waste water transferpump are joined; Vertical reactor bottom material outlet and bottom terminal baiting valve, solid-liquid separator join; Solid-liquid separator is provided with liquid exit valve, solid outlet, and solid outlet is divided into Automatic Weighing and Packing Equipment, and device is by computer platform operation control.
Described vertical reactor is the drum type vertical vessel, is provided with in the drum type vertical vessel top to erect tubulation section cooling water jecket.Vertical reactor is axially arranged with stir shaft, axial length is 3/4 of height for reactor, and stir shaft is provided with 4-5 group down-push type agitating vane, and stir shaft is by the rotation of top driven by motor.First strainer and second strainer are made up of multiple layer filter media, and filtration medium comprises: felt, filter cloth, filter paper, mould material.The top tubulation ingress of vertical reactor respectively adorns a static mixer.
Another kind of alkali decrement waste water terephthaldehyde acid recovery reactor assembly: the waste water import is joined through waste water transferpump and first strainer, horizontal reactor upper inlet; First filter inlet is joined with second strainer, horizontal reactor upper inlet; The outlet of waste water transferpump is joined with first recycle valve, horizontal reactor import; The horizontal reactor upper inlet and first acid inlet valve add sour volume pump, and sour storage tank joins; The second sour import of horizontal reactor pipeline middle and upper part and second acid inlet valve, add sour volume pump and sour storage tank joins; The horizontal reactor outlet at bottom and second recycle valve, the import of waste water transferpump are joined; Horizontal reactor outlet at bottom and bottom baiting valve, solid-liquid separator join; Solid-liquid separator is provided with liquid exit valve, solid outlet, and solid outlet is divided into Automatic Weighing and Packing Equipment, and device is by computer platform operation control.
Described horizontal reactor shell is round or rectangular vessel, be single tube in the container Cong Shang Dao Xia rotation stream arrangement.First strainer and second strainer are made up of multiple layer filter media, and filtration medium comprises: felt, filter cloth, filter paper, mould material.The leading portion of horizontal reactor is respectively adorned several static mixers.
Advantage of the present invention:
(1) technology of the present invention is simple, takes up an area of to lack reduced investment, operation automation;
(2) the butt rate of recovery of terephthalic acid of the present invention can＞95%, reclaim to the purity of first two benzoic acids can＞95%;
(3) this explained hereafter method does not increase secondary pollution;
(4) the heat recuperation rate of alkali decrement waste water reaches about 60%.
Description of drawings
Fig. 1 is the alkali decrement waste water terephthaldehyde acid-restoring plant structural representation that adopts vertical reactor;
Fig. 2 is the alkali decrement waste water terephthaldehyde acid-restoring plant structural representation that adopts the reactor that crouches;
Fig. 3 is an alkali decrement waste water terephthaldehyde acid-restoring plant control software schema.
Embodiment
As shown in Figure 1, waste water import 3 is through waste water transferpump 4 and first strainer 6, join with vertical tubulation section reactor 1 top import 10,6 imports of first strainer with join with vertical tubulation section reactor 1 top import 10 through second strainer 7; 4 outlets of waste water transferpump are joined with vertical reactor 1 top inlet 9 with first circulation control valve 28; Vertical reactor 1 top, the first sour import 12 and first adds sour control valve 13, sour volume pump 15 joins with sour storage tank 16; Vertical reactor 1 first tubulation pars infrasegmentalis, the second sour import 22 and the second sour control valve 14, sour volume pump 15 join with sour storage tank 16; Vertical reactor 1 lower part outlet 23 and second circulation control valve 29 join with 4 imports of waste water transferpump; Vertical reactor 1 bottom material outlet 26 joins with bottom baiting valve 27, solid-liquid separator 30; Solid-liquid separator 30 is provided with liquid exit valve 33, solid outlet 31, and solid outlet 31 is divided into Automatic Weighing and Packing Equipment 32, and device is by computer platform 34 operation controls.
Alkali decrement waste water enters from waste water import 3, be forced into 0.1-0.6Mpa with waste water transferpump 4, detect pH value through PH meter 5, then through first strainer 6 (second strainer 7 is standby) fine filtering, remove fine mechanical impurity, micronic dust particle, solid phase organism inorganics particulate as far as possible, two platform shunt filter terminal valves automatically switch, and regularly remove filter residue, and filtrate filtered enters horizontal reactor 2 top inlet 10.After alkali decrement waste water enters vertical reactor 1 top, start and add sour volume pump 15, by PH meter 5 parameters that provide, by computer control first acid adding valve 13, the acid amount that adding should add.After PH meter 8 and PH meter 17 were carried back the different PH of reaction solution, the pH value of regulating and control reaction solutions by computer control second acid adding valve 14 reached between the 2-5 again, makes acid precipitation reaction abundant.When providing pH value after the reaction that reaches is improved by PH meter 24, acid precipitation reaction is finished.Reaction solution can export 26 by reactor lower part, opens baiting valve 27, puts into solid-liquid separator 30, and after separating after filtration, the solid wet terephthalic acid is discharged the automatic control weighing and bagging from solid outlet 31.Filtrate is discharged by liquid exit 31, with in other waste water of basic printing and dyeing and reuse afterwards or discharging.
Water coolant enters from the most following pipeline section chuck mouth 18, on flow to upper tube array section outlet 20 and discharge the heat in the exchange acid out reaction solution.The temperature of acid precipitation reaction liquid is controlled at below 40 ℃.Cooling water flow is adjusted by computer control cold valves 19.
The computer timing control is closed influent waste water valve 3, material outlet valve 27, is closed first strainer 6, second strainer 7, open first recycle valve 28, second recycle valve 29, with waste water transferpump 4 the big flow of reaction solution is played circulation, the flushing pipe reactor, prevent deposition of solids, the general 3-5 of flush time minute.Production process is repeated automatically by computer.
As shown in Figure 2, waste water import 3 is joined through waste water transferpump 4 and first strainer 6, horizontal reactor 2 upper inlet 10, and 6 imports of first strainer and second strainer 7, horizontal reactor 2 upper inlet 10 are joined; 4 outlets of waste water transferpump are joined with first recycle valve 28, horizontal reactor 2 imports 10; Horizontal reactor 2 upper inlet 12 and first acid inlet valve 13 add sour volume pump 15, and sour storage tank 16 joins; The second sour import 22 of horizontal reactor 2 pipeline middle and upper parts and second acid inlet valve 14, add sour volume pump 15 and join with sour storage tank 16; Horizontal reactor 2 outlet at bottoms 26 join with second recycle valve 29,4 imports of waste water transferpump; Horizontal pipeline reactor 2 outlet at bottoms 26 join with bottom baiting valve 27, solid-liquid separator 30; Solid-liquid separator 30 is provided with liquid exit valve 33, solid outlet 31, and solid outlet 31 is divided into Automatic Weighing and Packing Equipment 32, and device is by computer platform 34 operation controls.
Alkali decrement waste water enters from waste water import 3, be forced into 0.1-0.6Mpa with waste water transferpump 4, detect pH value through PH meter 5, then through first strainer 6 (second strainer 7 is standby) fine filtering, remove fine mechanical impurity, micronic dust particle, solid phase organism inorganics particulate as far as possible, two platform shunt filter terminal valves automatically switch, and regularly remove filter residue, and filtrate filtered enters horizontal reactor 2 top inlet 10.After alkali decrement waste water enters vertical reactor 1 top, start and add sour volume pump 15, by PH meter 5 parameters that provide, by computer control first acid adding valve 13, the acid amount that adding should add.After PH meter 8 and PH meter 17 were carried back the different PH of reaction solution, the pH value of regulating and control reaction solutions by computer control second acid adding valve 14 reached between the 2-5 again, makes acid precipitation reaction abundant.When providing pH value after the reaction that reaches is improved by PH meter 24, acid precipitation reaction is finished.Reaction solution can export 26 by reactor lower part, opens baiting valve 27, puts into solid-liquid separator 30, and after separating after filtration, the solid wet terephthalic acid is discharged the automatic control weighing and bagging from solid outlet 31.Filtrate is discharged by liquid exit 31, with in other waste water of basic printing and dyeing and reuse afterwards or discharging.
Water coolant descends chuck mouth 18 to enter most from horizontal reactor 2, on flow to Jacket outlet 20 and discharge the heat in the exchange acid out reaction solution.The temperature of acid precipitation reaction liquid is controlled at below 40 ℃.Cooling water flow is adjusted by computer control cold valves 19.
The computer timing control is closed influent waste water valve 3, material outlet valve 27, is closed first strainer 6, second strainer 7, open first recycle valve 28, second recycle valve 29, with waste water transferpump 4 the big flow of reaction solution is played circulation, the flushing pipe reactor, prevent deposition of solids, the general 3-5 of flush time minute.Production process is repeated automatically by computer.
As shown in Figure 3, alkali decrement waste water comprehensive utilization suite of equipment is all finished the whole process flow operation jointly by computer and PLC machine.When static, system's Close All; In the time of dynamically, control by computer program.Simultaneously, system is provided with: the acid accumulator storage liquid level is reported to the police automatically, regularly circulation flushing, the regulation and control of acid solution input, the regulation and control of water coolant input of material, and production process is implemented automatization control fully.
Information initializing: be mainly used to be provided with production technique circulation original state, set up address pointer, the cycle counter initial value is set, assignment is given and is set controlled variable and data variable etc.
Circulating system: production process is finished for the instruction operation that repeatedly repeats to be performed.
Loop control variable is revised: mainly production technique loop variable data are revised, modulated.
Loop ends control: judge whether loop control variable satisfies the condition of loop ends, go to continue to carry out cycling program as not satisfying then to change; Then withdraw from cycling program as satisfying.
Loop ends is handled: the result to cycling program is carried out, carry out analyzing and processing and be stored in designated memory locations.
System also is provided with automatic operation and manual operation conversion.
Claims (8)
1. alkali decrement waste water terephthaldehyde acid recovery reaction unit, it is characterized in that, waste water import (3) is through waste water transferpump (4) and first strainer (6), join with vertical tubulation section reactor (1) top first import (10), first strainer (6) import with join through second strainer (7) and vertical tubulation section reactor (1) top first import (10); Waste water transferpump (4) outlet is joined with first circulation control valve (28) and vertical reactor (1) top second import (9); Vertical reactor (1) the top first sour import (12) and first adds sour control valve (13), sour volume pump (15) joins with sour storage tank (16); The second sour import (22) of vertical reactor (1) first tubulation pars infrasegmentalis is joined with sour storage tank (16) with the second sour control valve (14), sour volume pump (15); Vertical reactor (1) lower part outlet (23) joins with second circulation control valve (29) and waste water transferpump (4) import; Vertical reactor (1) bottom material outlet (26) joins with bottom baiting valve (27), solid-liquid separator (30); Solid-liquid separator (30) is provided with liquid exit valve (33), solid outlet (31), and solid outlet (31) is divided into Automatic Weighing and Packing Equipment (32), and device is by computer platform (34) operation control.
2. a kind of alkali decrement waste water terephthaldehyde acid recovery reaction unit according to claim 1 is characterized in that described vertical reactor (1) is the drum type vertical vessel, is provided with in the drum type vertical vessel top to erect tubulation section cooling water jecket (35).
3. a kind of alkali decrement waste water terephthaldehyde acid recovery reaction unit according to claim 1, it is characterized in that, described vertical reactor (1) is axially arranged with stir shaft, axial length is 3/4 of height for reactor, stir shaft is provided with 4-5 group down-push type agitating vane (25), and stir shaft is by the rotation of top driven by motor.4. a kind of alkali decrement waste water terephthaldehyde acid recovery reaction unit according to claim 1, it is characterized in that, described first strainer (6) is made up of multiple layer filter media with second strainer (7), and filtration medium comprises: felt, filter cloth, filter paper, mould material.
5. a kind of alkali decrement waste water terephthaldehyde acid recovery reaction unit according to claim 1 is characterized in that the top tubulation ingress of described vertical reactor (1) respectively adorns a static mixer.
6. an alkali decrement waste water terephthaldehyde acid recovery reactor assembly is characterized in that, waste water import (3) is joined through waste water transferpump (4) and first strainer (6), horizontal reactor (2) upper inlet (10); (6) import of first strainer is joined with second strainer (7), horizontal reactor (2) upper inlet (10); Waste water transferpump (4) outlet is joined with first recycle valve (28), horizontal reactor (2) import (10); Horizontal reactor (2) upper inlet (12) and first acid inlet valve (13) add sour volume pump (15), and sour storage tank (16) joins; The second sour import (22) of horizontal reactor (2) pipeline middle and upper part and second acid inlet valve (14), add sour volume pump (15) and join with sour storage tank (16); Horizontal reactor (2) bottom terminal outlet (26) is joined with second recycle valve (29), waste water transferpump (4) import; Horizontal reactor (2) outlet at bottom (26) joins with bottom baiting valve (27), solid-liquid separator (30); Solid-liquid separator (30) is provided with liquid exit valve (33), solid outlet (31), and solid outlet (31) is divided into Automatic Weighing and Packing Equipment (32), and device is by computer platform (34) operation control.
7. a kind of alkali decrement waste water terephthaldehyde acid recovery reaction unit according to claim 6 is characterized in that described horizontal reactor (2) shell is round or rectangular vessel, is that single tube (36) is arranged to following rotation stream from last in the container.
8. a kind of alkali decrement waste water terephthaldehyde acid recovery reaction unit according to claim 6, it is characterized in that, described first strainer (6) is made up of multiple layer filter media with second strainer (7), and filtration medium comprises: felt, filter cloth, filter paper, mould material.
9. a kind of alkali decrement waste water terephthaldehyde acid recovery reaction unit according to claim 6 is characterized in that the leading portion of described horizontal reactor (2) is respectively adorned several static mixers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510061664XA CN100344600C (en) | 2005-11-22 | 2005-11-22 | Alkali decremental waste water terephthalic acid recovery device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510061664XA CN100344600C (en) | 2005-11-22 | 2005-11-22 | Alkali decremental waste water terephthalic acid recovery device |
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| CN1775730A true CN1775730A (en) | 2006-05-24 |
| CN100344600C CN100344600C (en) | 2007-10-24 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070234A (en) * | 2010-12-14 | 2011-05-25 | 扬州市革领高科技纳米环保设备有限公司 | Method for separating sodium terephthalate and alkaline solution from alkali deweighting waste liquid |
| CN102962022A (en) * | 2012-12-09 | 2013-03-13 | 大连创达技术交易市场有限公司 | Layered heating type reaction kettle |
| CN104725467A (en) * | 2015-03-26 | 2015-06-24 | 江苏诚信药业有限公司 | Process system for preparing glycyl glutamine and method thereof |
| CN106277576A (en) * | 2016-08-11 | 2017-01-04 | 上海凯鑫分离技术股份有限公司 | A kind of polyester fiber alkali processes the integrated conduct method of waste water |
| CN106999885A (en) * | 2014-11-20 | 2017-08-01 | 赛贝克环球科技公司 | Reactor and its application method |
| CN107285551A (en) * | 2016-04-05 | 2017-10-24 | 常州市五洲环保科技有限公司 | A kind of reaction unit of comprehensive utilization of resources alkali decrement waste water |
| CN108516933A (en) * | 2018-03-29 | 2018-09-11 | 绍兴立源科技信息有限公司 | A kind of cyclic utilization system and method for dyeing and finishing wastewater acid out screenings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680262A (en) * | 2005-01-14 | 2005-10-12 | 东华大学 | Method and device for recovering terephthalic acid from waste water by integrated basic decrement |
-
2005
- 2005-11-22 CN CNB200510061664XA patent/CN100344600C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070234A (en) * | 2010-12-14 | 2011-05-25 | 扬州市革领高科技纳米环保设备有限公司 | Method for separating sodium terephthalate and alkaline solution from alkali deweighting waste liquid |
| CN102070234B (en) * | 2010-12-14 | 2012-07-25 | 扬州市革领高科技纳米环保设备有限公司 | Method for separating sodium terephthalate and alkaline solution from alkali deweighting waste liquid |
| CN102962022A (en) * | 2012-12-09 | 2013-03-13 | 大连创达技术交易市场有限公司 | Layered heating type reaction kettle |
| CN106999885A (en) * | 2014-11-20 | 2017-08-01 | 赛贝克环球科技公司 | Reactor and its application method |
| CN104725467A (en) * | 2015-03-26 | 2015-06-24 | 江苏诚信药业有限公司 | Process system for preparing glycyl glutamine and method thereof |
| CN107285551A (en) * | 2016-04-05 | 2017-10-24 | 常州市五洲环保科技有限公司 | A kind of reaction unit of comprehensive utilization of resources alkali decrement waste water |
| CN106277576A (en) * | 2016-08-11 | 2017-01-04 | 上海凯鑫分离技术股份有限公司 | A kind of polyester fiber alkali processes the integrated conduct method of waste water |
| CN108516933A (en) * | 2018-03-29 | 2018-09-11 | 绍兴立源科技信息有限公司 | A kind of cyclic utilization system and method for dyeing and finishing wastewater acid out screenings |
| CN108516933B (en) * | 2018-03-29 | 2021-10-26 | 绍兴立源科技信息有限公司 | System and method for recycling acid precipitation pulp slag of dyeing and finishing wastewater |
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| CN100344600C (en) | 2007-10-24 |
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Granted publication date: 20071024 Termination date: 20111122 |