CN106045174B - The three-stage of acid alcohol condensed wastewater shunts processing and alcohol recyclable device and method - Google Patents
The three-stage of acid alcohol condensed wastewater shunts processing and alcohol recyclable device and method Download PDFInfo
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- CN106045174B CN106045174B CN201610589819.5A CN201610589819A CN106045174B CN 106045174 B CN106045174 B CN 106045174B CN 201610589819 A CN201610589819 A CN 201610589819A CN 106045174 B CN106045174 B CN 106045174B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/38—Polymers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The three-stage that the present invention discloses a kind of acid alcohol condensed wastewater shunts processing and alcohol recyclable device, including rectifying column, condenser and reboiler；Rectifying column is respectively tower reactor, the column plate section at middle part, the packing section at middle part and the tower top at top of bottom from bottom to top；The outlet reboiler bottom liquid import of tower reactor, the inlet communication reboiler top gas outlet of tower reactor；Column plate section is provided with feed inlet；Packing section bottom is equipped with wastewater outlet；Tower top outlet is connected to condenser.Invention additionally discloses a kind of three-stage of acid alcohol condensed wastewater to shunt processing and alcohol recovery method.Rectifying column is divided three sections by the present invention from bottom to top, and handled using this three sections completion three-stage shuntings: 1, overhead distillate main component is water and low-carbon alcohols, is burned by coal-burning boiler；2, outlet water organic substance content is lower in the middle part of tower, is discharged into sewage network with sanitary wastewater or after the waste water thinning of biochemical treatment is up to standard；3, tower reactor distillate predominantly mixes dihydric alcohol, can be recycled, melts down use in production of resins on a small quantity again.
Description
Technical field
The present invention is application No. is 201410021732.9, and the applying date is on January 17th, 2014, a kind of entitled " acid alcohol
The divisional application of the application for a patent for invention of condensed wastewater pre-processing device and method ".The present invention relates to a kind of sewage treatment equipments
And method, the especially processing equipment and method to high concentration COD waste water caused by acid alcohol polycondensation.
Background technique
It is used in daily life using the product of the production of resins of acid alcohol polycondensation widely, such as resin craft, people
Make the paint film etc. of marble, glass fiber reinforced plastics product, furniture surface.
Currently, by most of resin (such as unsaturated polyester resin, alkyd resin etc.) of acid and alcohol polycondensation reaction production,
It needs to extract intermediate product water out by vacuumizing in process of production, otherwise will affect the quality of resin, but vacuumize
When, a small amount of organic matter is had as vapor is extracted, and waste water is formed after condensation.The organic concentration of the condensed wastewater is too
Height, smell is very big, and COD concentration is high, and is difficult directly to carry out biochemical treatment.
There is part production of resins enterprise that condensed wastewater and sanitary wastewater are carried out mixing thinning, reduces its organic concentration again
Biochemical treatment is carried out, but treating capacity is big, does not carry out the recycling of alcohol.Ye You producer is directly by waste water using at boiler burning
Reason, two methods are similarly formed the waste of resource.
In order to consider cost factor, the rectifying column of most of production of resins enterprise used passes through heated resin reaction kettle
Conduction oil directly heated, be not continuous heating when due to production of resins, so the temperature of conduction oil is unstable
(generally at 180 DEG C -- between 270 DEG C), and span is larger, will lead to condensed wastewater in this way and hardly results in fine rectifying
Separation, treated, and waste water COD concentration is still very high.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above-mentioned problems, provide a kind of three-stage point of acid alcohol condensed wastewater
Stream process and alcohol recyclable device.
The present invention also provides a kind of three-stage of acid alcohol condensed wastewater to shunt processing and alcohol recovery method.
Its technical solution is:
A kind of three-stage of acid alcohol condensed wastewater shunts processing and alcohol recyclable device, including rectifying column, condenser and boils again
Device；
The rectifying column is respectively tower reactor, the column plate section at middle part, the packing section at middle part and the top of bottom from bottom to top
Tower top；
The liquid-inlet of the outlet reboiler bottom of tower reactor bottom, the gas at the top of the inlet communication reboiler of tower reactor
Outlet；The bottom of reboiler is also provided with mixing dihydric alcohol outlet；
The multilayer column plate straggly for forming feeding-passage up and down is provided in column plate section, and corresponding top layer column plate is provided with charging
Mouthful；
Packing section bottom is equipped with wastewater outlet；
The outlet condenser of tower top, condenser are provided with condensation outlet.
The feed inlet of the column plate section is connected with filter device, and the condenser is arranged at the top of the rectifying column.
The three-stage of acid alcohol condensed wastewater shunts processing and alcohol recyclable device further includes conduction oil surge tank, and to add
The conduction oil coil pipe of hot reboiler；The outside of reboiler is arranged in conduction oil coil pipe, and connects conduction oil surge tank.
The tower top and the tower reactor are respectively arranged with temperature measuring device, and the tower top temperature is 85-97 DEG C, the tower
Bottom temperature is 110-140 DEG C, and the temperature of the reboiler is 180~200 DEG C.
The packing section is separated with the column plate section by screen, and the column plate quantity is 8~12 layers, the length of the packing section
Degree is 1m~2m, and the volume of the conduction oil surge tank is 2.5~3.5 times of the reboiler volume.
A kind of three-stage of acid alcohol condensed wastewater according to claim 1 shunts processing and alcohol recovery method, including
Following steps:
One, acid alcohol condensed wastewater enters rectifying column and is distilled with reboiler, and the temperature control of the tower reactor of rectifying column exists
110~140 DEG C, at 85~97 DEG C, the temperature of reboiler is controlled at 180~200 DEG C for the temperature control of tower top；
Two, after the tower top of rectifying column enters condenser, the azeotropic mixture of low-carbon alcohol and water, fractionation in the middle part of rectifying column are condensed out
Low COD waste water out, tower reactor are remaining for mixing dihydric alcohol.
The column plate section entered in the middle part of rectifying column after processing is filtered to acid alcohol condensed wastewater.
Lowization is discharged in the azeotropic mixture of the condensation outlet discharge low-carbon alcohol and water of condenser, the wastewater outlet of packing section bottom
Learn oxygen demand waste water, the mixing dihydric alcohol outlet discharge mixing dihydric alcohol of reboiler bottom.
Structure of the invention collocation rationally, to the pretreatment mode of acid alcohol condensed wastewater can well to the ingredient in waste water into
Row separation, and can prevent distilling effect caused by conduction oil temperature fluctuation from generating difference.The heating method that uses and point
Waste water from after can make full use of in production scene, have good environmental benefit, social benefit and economic benefit.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
The following further describes the specific embodiments of the present invention with reference to the drawings.
As shown in Figure 1, acid alcohol condensed wastewater pre-processing device of the invention includes filter device 1, rectifying column 2, condenser 3
And reboiler 4, filter device 1 are connect in the middle part of rectifying column 2 by pipeline；The setting of condenser 3 is at 2 top of rectifying column, with rectifying
The connection of 2 tower top 24 of tower.4 top of reboiler and bottom are respectively equipped with gas vent 41 and liquid-inlet 42, and 2 tower reactor 21 of rectifying column is divided
Not Tong Guo pipeline connect with gas vent 41 and liquid-inlet 42.Rectifying column 2 from bottom to top be respectively tower reactor 21, column plate section 22,
Packing section 23, tower top 24；Tower top 24 and tower reactor 21 are provided with temperature measuring device, and galvanic couple temperature can be used in temperature measuring device
The temperature measuring device of this field routine also can be used in detector.Liquidometer 25 is equipped on the outside of tower reactor 21.
The column plate section 22 of rectifying column 2 is provided with 8~12 layers of column plate 26, wherein the effect using 10 layers of column plate 26 is preferable.Tower
The top of plate section 22 is equipped with packing section 23, and the length of packing section 23 is 1m~2m, and the present embodiment is the packing section of 1.5m.Packing section
23 can be one-part form filler, or segmented filler.Packing section 23 is separated with column plate section 22 by screen 27.Packing section 23
Bottom be provided with wastewater outlet 28, for the low COD waste water being condensed out in packing section 23 to be discharged.
The outside of reboiler 4 is equipped with conduction oil coil pipe, and conduction oil coil pipe is to heated reboiler 4.Conduction oil in order to prevent
The fluctuation of temperature and the effect for reducing rectifying column 2 Yu reboiler 4, also add conduction oil surge tank 5 before conduction oil coil pipe.It is thermally conductive
Oil first imports conduction oil surge tank 5, is sufficiently mixed in conduction oil surge tank 5 before heating to rectifying column 2 and reboiler 4
It after conjunction, then is heated, the fluctuation of thermally conductive oil temperature can be effectively prevented.The volume of conduction oil surge tank 5 is 4 volume of reboiler
2.5~3.5 times, the present embodiment be 3 times.
When using the present invention, acid alcohol condensed wastewater is pre-processed as follows:
One, processing is filtered to acid alcohol condensed wastewater；
Two, by acid alcohol condensed wastewater with 0.5~0.7m3/ h is pumped to be distilled into rectifying column and reboiler, the tower of rectifying column
The temperature control of kettle is at 110~140 DEG C, and at 85~97 DEG C, the temperature of reboiler is controlled 180~200 for the temperature control of tower top
℃；
Three, it is condensed out the azeotropic mixture of low-carbon alcohol and water in overhead condenser, fractionates out low COD in the middle part of rectifying column
Waste water, tower reactor are remaining for mixing dihydric alcohol.
In the following, according to the method described above, carrying out test process to acid alcohol condensed wastewater.
Experiment one:
Resin condensed wastewater is according to 0.6m3/ h continues through filter, and introduces feed opening in the middle part of rectifying column, rectifying column control
The valve of conduction oil and condensed water processed makes 95 DEG C of tower top temperature, and column bottom temperature is 130 DEG C, and rectifying column mode of operation is continuous
Feed continuous discharge, and control heat conductive oil inlet temperature is 190 DEG C.
Experiment two:
Resin condensed wastewater is according to 0.7m3/ h continues through filter, and introduces feed opening in the middle part of rectifying column, rectifying column control
The valve of conduction oil and condensed water processed makes 85 DEG C of tower top temperature, and column bottom temperature is 140 DEG C, and rectifying column mode of operation is continuous
Feed continuous discharge, and control heat conductive oil inlet temperature is 200 DEG C.
Experiment three:
Resin condensed wastewater is according to 0.5m3/ h continues through filter, and introduces feed opening in the middle part of rectifying column, rectifying column control
The valve of conduction oil and condensed water processed makes 90 DEG C of tower top temperature, and column bottom temperature is 110 DEG C, and rectifying column mode of operation is continuous
Feed continuous discharge, and control heat conductive oil inlet temperature is 180 DEG C.
Overhead distillate main component is water and low-carbon alcohols, is directly burned by coal-burning boiler, tower reactor distillate master
To be mixing dihydric alcohol (containing binary acid and oligomer) recycling, melt down use on a small quantity again in production of resins.
Outlet water organic substance content is lower in the middle part of tower, by with sanitary wastewater or waste water that biochemical treatment is complete carries out thinning extremely
COD cr≤4500mg/l passes through the biochemical treatments such as anaerobic tower, anaerobic fixed film reactor, intermediate aerobic tank, contact-oxidation pool to COD
Cr≤100mg/l is discharged into chemical industrial park sewage network, can also store the waste water handled for thinning rectifying column.
Claims (7)
1. a kind of three-stage of acid alcohol condensed wastewater shunts processing and alcohol recyclable device, it is characterised in that: including rectifying column, condensation
Device and reboiler；
The rectifying column is respectively tower reactor, the column plate section at middle part, the packing section at middle part and the tower top at top of bottom from bottom to top,
The column plate section is separated with the packing section by screen；
The liquid-inlet of the outlet reboiler bottom of tower reactor bottom, the gas at the top of the inlet communication reboiler of tower reactor go out
Mouthful；The bottom of reboiler is also provided with mixing dihydric alcohol outlet；
The multilayer column plate straggly for forming feeding-passage up and down is provided in column plate section, and corresponding top layer column plate is provided with feed inlet；
Packing section bottom is equipped with wastewater outlet；
The outlet condenser of tower top, condenser are provided with condensation outlet；
It further include conduction oil surge tank, and the conduction oil coil pipe to heated reboiler；Conduction oil coil pipe is arranged in reboiler
Outside, and connect conduction oil surge tank.
2. the three-stage of acid alcohol condensed wastewater according to claim 1 shunts processing and alcohol recyclable device, it is characterised in that:
The feed inlet of the column plate section is connected with filter device, and the condenser is arranged at the top of the rectifying column.
3. the three-stage of acid alcohol condensed wastewater according to claim 1 shunts processing and alcohol recyclable device, it is characterised in that:
The tower top and the tower reactor are respectively arranged with temperature measuring device, and the tower top temperature is 85-97 DEG C, and the bottom temperature is
110-140 DEG C, the temperature of the reboiler is 180~200 DEG C.
4. the three-stage of acid alcohol condensed wastewater according to claim 1 shunts processing and alcohol recyclable device, it is characterised in that:
The column plate quantity is 8~12 layers, and the length of the packing section is 1m~2m, the volume of the conduction oil surge tank be it is described again
Boil 2.5~3.5 times of device volume.
5. a kind of three-stage of acid alcohol condensed wastewater using claim 1 described device shunts processing and alcohol recovery method,
It is characterized in that: including the following steps:
One, acid alcohol condensed wastewater enters rectifying column and is distilled with reboiler, the control of the temperature of the tower reactor of rectifying column 110~
140 DEG C, at 85~97 DEG C, the temperature of reboiler is controlled at 180~200 DEG C for the temperature control of tower top；
Two, after the tower top of rectifying column enters condenser, it is condensed out the azeotropic mixture of low-carbon alcohol and water, is fractionated out in the middle part of rectifying column low
COD waste water, tower reactor are remaining for mixing dihydric alcohol.
6. the three-stage of acid alcohol condensed wastewater according to claim 5 shunts processing and alcohol recovery method, it is characterised in that:
The column plate section entered in the middle part of rectifying column after processing is filtered to acid alcohol condensed wastewater.
7. the three-stage of acid alcohol condensed wastewater according to claim 5 shunts processing and alcohol recovery method, it is characterised in that:
Low COD is discharged in the azeotropic mixture of the condensation outlet discharge low-carbon alcohol and water of condenser, the wastewater outlet of packing section bottom
Waste water, the mixing dihydric alcohol outlet discharge mixing dihydric alcohol of reboiler bottom.
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| CN201610589819.5A CN106045174B (en) | 2014-01-17 | 2014-01-17 | The three-stage of acid alcohol condensed wastewater shunts processing and alcohol recyclable device and method |
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| CN201610589819.5A CN106045174B (en) | 2014-01-17 | 2014-01-17 | The three-stage of acid alcohol condensed wastewater shunts processing and alcohol recyclable device and method |
| CN201410021732.9A CN104310680B (en) | 2014-01-17 | 2014-01-17 | A kind of acid alcohol polycondensation Wastewater Pretreatment Apparatus and method for |
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| CN106630345A (en) * | 2016-11-18 | 2017-05-10 | 浙江荣凯科技发展股份有限公司 | Electrolytic oxidation treatment process of intermediate 2-chloronicotinic acid production wastewater |
| CN108529804A (en) * | 2018-04-24 | 2018-09-14 | 浙江荣凯科技发展有限公司 | A kind of dichloro-nicotinic acid production sewage treatment device |
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| CN201316544Y (en) * | 2008-12-05 | 2009-09-30 | 东营市华安化工有限责任公司 | Distillation purification device |
| EP2450336A1 (en) * | 2010-11-09 | 2012-05-09 | INEOS Paraform GmbH | Process for the production of pure methylal |
| CN102285697B (en) * | 2011-06-08 | 2013-02-06 | 南京工业大学 | Process for recycling waste water from unsaturated polyester resin industry |
| CN102583863B (en) * | 2012-02-26 | 2013-10-23 | 上海派尔科化工材料有限公司 | Wastewater treatment method for unsaturated polyester resin |
| CN203271843U (en) * | 2013-05-24 | 2013-11-06 | 成都昊特新能源技术股份有限公司 | ORC power generation system used for offshore platform |
| CN203700097U (en) * | 2014-01-17 | 2014-07-09 | 福建永悦科技有限公司 | Equipment for pretreating acid alcohol condensation polymerization waste water |
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Effective date of registration: 20211229 Address after: 362100 QUANHUI Petrochemical Park, Hui'an County, Quanzhou City, Fujian Province Patentee after: Quanzhou Yongyue New Material Co.,Ltd. Address before: 362100 QUANHUI Petrochemical Park, Hui'an County, Quanzhou City, Fujian Province Patentee before: YONGYUE SCIENCE & TECHNOLOGY CO.,LTD. |