CN203159509U - Recovery system for recovering tetracarboxylic acid from tetracarboxylic acid production wastewater - Google Patents
Recovery system for recovering tetracarboxylic acid from tetracarboxylic acid production wastewater Download PDFInfo
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- CN203159509U CN203159509U CN 201320182031 CN201320182031U CN203159509U CN 203159509 U CN203159509 U CN 203159509U CN 201320182031 CN201320182031 CN 201320182031 CN 201320182031 U CN201320182031 U CN 201320182031U CN 203159509 U CN203159509 U CN 203159509U
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- tetracarboxylic acid
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Abstract
The utility model relates to a recovery system for recovering tetracarboxylic acid from tetracarboxylic acid production wastewater, which aims to solve the technical problems of high energy consumption and high production cost when steam heating is utilized to concentrate and evaporate water. The technical scheme is as follows: the recovery system comprises a wastewater tank with a water inlet and a water outlet, and a dehydrator connected with the water outlet of the wastewater tank, wherein the dehydrator comprises a first transfer pump connected with the water outlet of the wastewater tank, and a nanofiltration device in which a nanofiltration membrane is arranged; the first transfer pump is provided with a first water outlet and a second water outlet which are respectively provided with valve; the first water outlet is connected with the nanofiltration device; the second water outlet is connected with a separation device; the nanofiltration device is provided with a dialysate outlet and a trapped liquid outlet; the dialysate outlet is connected with a waste liquid collector; and the trapped liquid outlet is connected with the water inlet of the wastewater tank. The utility model lowers the energy consumption and production cost, reduces the environmental pollution caused by wastewater discharge, lowers the cost required by wastewater treatment, and enhances the recovery rate of the tetracarboxylic acid.
Description
Technical field
The utility model belongs to tetracarboxylic acid production unit technical field, relates to a kind of recovery system, particularly a kind of recovery system that reclaims tetracarboxylic acid from the waste water of producing tetracarboxylic acid.
Background technology
Tetracarboxylic acid is important chemical material, plays crucial effects in industrial production, as 3,3 ', 4,4 '-biphenyl ether tetracarboxylic acid can be used for preparing the polyimide monomer of various uses, also is simultaneously the important source material of making novel high polymer materials such as resin and PI film; 3,3 ', 4,4 '-electronic technology field that biphenyl ether tetracarboxylic acid dianhydride is widely used in purity and low monometallic ionic concn are had relatively high expectations in.Tetracarboxylic acid can produce a large amount of waste water in process of production, and the tetracarboxylic acid concentration of gained is more high when producing, and required refining number of times is just more many, and the waste water of generation is also just more many.Also contain certain density tetracarboxylic acid in the waste water, if directly discharging can cause very big waste, and wastewater discharge is big, causes environmental pollution.Existing recovery system major part all is to adopt steam-heated method to concentrate to steam water, and then tetracarboxylic acid separated from waste water reclaim, but the steam heating energy consumption is big, the production cost height, tetracarboxylic acid in the waste water is heated for a long time and decomposes easily, reclaims purity and is lower than 70%, and the tetracarboxylic acid that reclaims gained is of poor quality, be difficult to recycling, it is too high to handle a large amount of waste water costs.
Summary of the invention
The purpose of this utility model is to utilize steam heating to concentrate the high technical problem of the steaming big production cost of water consumption in order to solve, in order to address this problem, we have designed a kind of recovery system that reclaims tetracarboxylic acid from the waste water of producing tetracarboxylic acid, utilize first transferpump and nanofiltration device to carry out membrane concentration, mechanized operation, simple and convenient, carry out membrane concentration repeatedly, 9%～11% o'clock of trapped fluid simmer down to raw wastewater amount is carried out Separation and Recovery again, greatly reduce energy consumption and production cost.
The utility model for realizing the technical scheme that goal of the invention adopts is: a kind of recovery system that reclaims tetracarboxylic acid from the waste water of producing tetracarboxylic acid, comprise the waste water tank that has water-in and water outlet, the dewatering unit that links to each other with the water outlet of waste water tank, the waste collection device and the tripping device that link to each other with dewatering unit, the waste water reclamation jar that links to each other with tripping device and tetracarboxylic acid withdrawing can, key is: described dewatering unit comprises first transferpump that links to each other with the water outlet of waste water tank, and the inner nanofiltration device that is provided with nanofiltration membrane, first transferpump is provided with first water outlet and second water outlet of band valve, first water outlet is connected with nanofiltration device, second water outlet is connected with tripping device, nanofiltration device is provided with dialyzate outlet and trapped fluid outlet, the dialyzate outlet is connected with the waste collection device, and the trapped fluid outlet is connected with the water-in of waste water tank.
Described recovery system also comprises second transferpump, and the waste water reclamation jar is connected with the water-in of waste water tank by second transferpump.
Described tripping device comprise the crystallizer that is connected with second water outlet of first transferpump, with the tank connected whizzer of crystallization, the 3rd water outlet of whizzer is connected with the tetracarboxylic acid withdrawing can with the waste water reclamation jar respectively with the 4th discharge port.
Be provided with liquidometer in the described waste water tank.
The beneficial effects of the utility model are: utilize first transferpump and nanofiltration device to carry out membrane concentration repeatedly, avoided utilizing steam heating to concentrate the high problem of the high production cost of energy consumption that water causes of steaming, also avoided simultaneously causing that the tetracarboxylic acid decomposition causes second-rate problem owing to be heated for a long time, guarantee the quality of tetracarboxylic acid, improved the recovery utilization rate of tetracarboxylic acid.The waste water that reclaims in the waste water reclamation jar is sent back to waste water tank by second transferpump and carries out membrane concentration again, has significantly reduced the waste discharge pollution on the environment, has reduced and has handled the required cost of waste water.Mechanized operation is simple and convenient, has improved working efficiency.Utilize liquidometer can observe the degree of membrane concentration at any time, convenient and practical.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In the accompanying drawing, 1 represents waste water tank, and 1-1 represents water-in, 1-2 represents water outlet, and 2 represent first transferpump, and 2-1 represents first water outlet, 2-2 represents second water outlet, and 3 represent nanofiltration device, and 3-1 represents the dialyzate outlet, 3-2 represents the trapped fluid outlet, and 4 represent crystallizer, and 5 represent whizzer, 5-1 represents the 3rd water outlet, and 5-2 represents the 4th discharge port, and 6 represent the waste water reclamation jar, 7 represent the tetracarboxylic acid withdrawing can, and 8 represent second transferpump.
Embodiment
A kind of recovery system that from the waste water of producing tetracarboxylic acid, reclaims tetracarboxylic acid, comprise the waste water tank 1 that has water-in 1-1 and water outlet 1-2, the dewatering unit that links to each other with the water outlet 1-2 of waste water tank 1, the waste collection device and the tripping device that link to each other with dewatering unit, the waste water reclamation jar 6 that links to each other with tripping device and tetracarboxylic acid withdrawing can 7, key is: described dewatering unit comprises first transferpump 2 that links to each other with the water outlet 1-2 of waste water tank 1, and the inner nanofiltration device 3 that is provided with nanofiltration membrane, first transferpump 2 is provided with the first water outlet 2-1 and the second water outlet 2-2 of band valve, the first water outlet 2-1 is connected with nanofiltration device 3, the second water outlet 2-2 is connected with tripping device, nanofiltration device 3 is provided with dialyzate outlet 3-1 and trapped fluid outlet 3-2, dialyzate outlet 3-1 is connected with the waste collection device, and trapped fluid outlet 3-2 is connected with the water-in 1-1 of waste water tank 1.
Described recovery system also comprises second transferpump 8, and waste water reclamation jar 6 is connected with the water-in 1-1 of waste water tank 1 by second transferpump 8.
Described tripping device comprises the crystallizer 4 that is connected with the second water outlet 2-2 of first transferpump 2, the whizzer 5 that is connected with crystallizer 4, and the 3rd water outlet 5-1 of whizzer 5 is connected with tetracarboxylic acid withdrawing can 7 with waste water reclamation jar 6 respectively with the 4th discharge port 5-2.
Be provided with liquidometer in the described waste water tank 1.
Be provided with valve on the water-in 1-1 of described waste water tank 1 and the water outlet 1-2.
Be provided with valve on the opening for feed of described crystallizer 4 and the discharge port.
The utility model is in the specific implementation: open the valve on water outlet 1-2 and the first water outlet 2-1, utilizing first transferpump 2 that the waste water in the waste water tank 1 is transported to through the first water outlet 2-1 utilizes nanofiltration membrane to carry out membrane concentration in the nanofiltration device 3, the dialyzate of membrane concentration gained flows in the waste collection device through dialyzate outlet 3-1, trapped fluid is flowed out by trapped fluid outlet 3-2, flow back in the waste water tank 1 through water-in 1-1 then, carry out membrane concentration so repeatedly, note observing liquidometer, when the trapped fluid in the waste water tank 1 be the raw wastewater amount 10% the time, stop to carry out membrane concentration.Close the valve on the first water outlet 2-1, open the valve on the second water outlet 2-2, the trapped fluid in the waste water tank 1 is sent to through the second water outlet 2-2 on first transferpump 2 and is cooled to 0～5 ℃ in the crystallizer 4, insulation 5h crystallization.Close water outlet 1-2 and the second water outlet 2-2 then, open water-in 1-1.Crystal in the crystallizer 4 and waste water are sent into whizzer 5, under centrifugal action, waste water flow in the waste water reclamation jar 6 through the 3rd water outlet 5-1, the tetracarboxylic acid of separating flow in the tetracarboxylic acid withdrawing can 7 through the 4th discharge port 5-2, and the process water-in 1-1 under the effect of second transferpump 8 of the waste water in the waste water reclamation jar 6 is sent back in the waste water tank 1 and proceeds membrane concentration.Reduce discharged waste water, reduced energy consumption and production cost.
Claims (6)
1. recovery system that from the waste water of producing tetracarboxylic acid, reclaims tetracarboxylic acid, comprise the waste water tank (1) that has water-in (1-1) and water outlet (1-2), the dewatering unit that links to each other with the water outlet (1-2) of waste water tank (1), the waste collection device and the tripping device that link to each other with dewatering unit, the waste water reclamation jar (6) that links to each other with tripping device and tetracarboxylic acid withdrawing can (7), it is characterized in that: described dewatering unit comprises first transferpump (2) that links to each other with the water outlet (1-2) of waste water tank (1), and the inner nanofiltration device (3) that is provided with nanofiltration membrane, first transferpump (2) is provided with first water outlet (2-1) and second water outlet (2-2) of band valve, first water outlet (2-1) is connected with nanofiltration device (3), second water outlet (2-2) is connected with tripping device, nanofiltration device (3) is provided with dialyzate outlet (3-1) and trapped fluid outlet (3-2), dialyzate outlet (3-1) is connected with the waste collection device, and trapped fluid outlet (3-2) is connected with the water-in (1-1) of waste water tank (1).
2. a kind of recovery system that from the waste water of producing tetracarboxylic acid, reclaims tetracarboxylic acid according to claim 1, it is characterized in that: described recovery system also comprises second transferpump (8), and waste water reclamation jar (6) is connected with the water-in (1-1) of waste water tank (1) by second transferpump (8).
3. a kind of recovery system that from the waste water of producing tetracarboxylic acid, reclaims tetracarboxylic acid according to claim 1, it is characterized in that: described tripping device comprises the crystallizer (4) that is connected with second water outlet (2-2) of first transferpump (2), the whizzer (5) that is connected with crystallizer (4), and the 3rd water outlet (5-1) of whizzer (5) is connected with tetracarboxylic acid withdrawing can (7) with waste water reclamation jar (6) respectively with the 4th discharge port (5-2).
4. a kind of recovery system that reclaims tetracarboxylic acid from the waste water of producing tetracarboxylic acid according to claim 1, it is characterized in that: described waste water tank is provided with liquidometer in (1).
5. a kind of recovery system that reclaims tetracarboxylic acid from the waste water of producing tetracarboxylic acid according to claim 1 is characterized in that: be provided with valve on the water-in (1-1) of described waste water tank (1) and the water outlet (1-2).
6. a kind of recovery system that reclaims tetracarboxylic acid from the waste water of producing tetracarboxylic acid according to claim 3 is characterized in that: be provided with valve on the opening for feed of described crystallizer (4) and the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182031 CN203159509U (en) | 2013-04-12 | 2013-04-12 | Recovery system for recovering tetracarboxylic acid from tetracarboxylic acid production wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182031 CN203159509U (en) | 2013-04-12 | 2013-04-12 | Recovery system for recovering tetracarboxylic acid from tetracarboxylic acid production wastewater |
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| CN203159509U true CN203159509U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320182031 Expired - Lifetime CN203159509U (en) | 2013-04-12 | 2013-04-12 | Recovery system for recovering tetracarboxylic acid from tetracarboxylic acid production wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559391A (en) * | 2012-01-10 | 2012-07-11 | 邵道德 | Device for producing bio-diesel by using swill oil and preparation method for bio-diesel |
-
2013
- 2013-04-12 CN CN 201320182031 patent/CN203159509U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559391A (en) * | 2012-01-10 | 2012-07-11 | 邵道德 | Device for producing bio-diesel by using swill oil and preparation method for bio-diesel |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 052165 Shijiazhuang economic and Technological Development Zone (good village) Jinsha Road, Hebei Patentee after: HEBEI HAILI FRAGRANCES CO.,LTD. Address before: 052165 Shijiazhuang economic and Technological Development Zone (good village) Jinsha Road, Hebei Patentee before: Shijiazhuang Haili-Fine Chemical Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
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| CX01 | Expiry of patent term |