CN203668146U - Water recycling system in PTA production process - Google Patents
Water recycling system in PTA production process Download PDFInfo
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- CN203668146U CN203668146U CN201320788593.3U CN201320788593U CN203668146U CN 203668146 U CN203668146 U CN 203668146U CN 201320788593 U CN201320788593 U CN 201320788593U CN 203668146 U CN203668146 U CN 203668146U
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- water
- lime set
- water tank
- production process
- pta production
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Abstract
The utility model discloses a water recycling system in a PTA production process. The technological process of the system is brief, easy to control and has a powerful processing function and the multiple functions of collection, processing, storing and reusing. The utility model relate to steps of water recycling, a precise filter is arranged behind a steam condensate heat exchanger, the output end of the steam condensate heat exchanger is connected with the water inlet of the precise filter, and a plate type heat exchanger is arranged behind the precise filter; the water outlet of the precise filter is connected with a geothermal fluid inlet end of the plate type heat exchanger; the water outlet end of the plate type heat exchanger is connected with the inlet of a reverse osmosis water producing pond of which the outlet is connected with the water inlet of a mixed bed system, and the water outlet of the mixed bed system is connected with the inlet of a water tank. Through the adoption of the water recycling system, the problem that plenty of condensate in the PTA production process is directed discharged, so that water energy is wasted, is solved, and at the same time, the testability and the controllability of the system are improved.
Description
Technical field
The utility model relates to the water treatment system of chemical industry, relates in particular to a kind of water circulation utilization system for PTA production process.
Background technology
PTA is the main raw material of polyester product, and along with the fast development that chemical industry is produced, the production technique of PTA is also improved thereupon.Existing production PTA technique mostly adopts low temperature or high-temperature oxidation, has the plurality of advantages such as flow process is brief, production technique is easily controlled, cost is low.Produce in PTA process, due to water and steam consumption larger, there are in process of production a large amount of lime sets directly to discharge, not only pollute environment, waste a large amount of water resourcess, also increased production cost, therefore set up the water circulation system in a set of perfect PTA production process, from vapor collection to water treatment, storage is until recycle and have and relate to, and just seems particularly important.
Steam condensate interchanger, it is the assembly of outbalance during water resources reclaims, chemicals dosing plant is located at lime set arm place by existing steam condensate interchanger, respectively to the dosing of each lime set arm, chemicals dosing plant is provided with multiple arms, each arm is provided with control valve, it not only controls complexity, and due to the position difference of interchanger, its dose flows to different, may cause cannot dosing apart from doser interchanger far away problem, simultaneously, chemicals dosing plant could not adopt magnetic valve automatically to control, and level of automation is lower.
Water is after removal of impurities and heat exchange processing, also need between PTA production equipment and water treatment system, set up a buffering, then water after treatment is transmitted back to production equipment participation production, industrial common employing storing water in water tank reaches this object, but, in prior art, the level of automation of water tank is low, poor controllability, for produce and storage brought some inconvenience, provide a kind of liquid level and temperature to survey, the water tank that service discharge is controlled, also just seems particularly important.
Utility model content
The utility model is the defect in order to make up above-mentioned technology, design the water circulation utilization system in a kind of PTA production process, this system process is brief, be easy to control, processing capacity is powerful, there is the multi-functional of collection, processing, storage and recycling, relate to each step of water cycle process, application the utility model, solve in PTA production process directly discharge and the problem of the Water Energy waste that causes of a large amount of lime sets, also improved the surveying of system, controllability simultaneously.
To achieve these goals, the technical solution of the utility model is:
A water circulation utilization system in PTA production process, comprises steam condensate interchanger, accurate filter, plate-type heat exchanger, reverse osmosis produced pond, mixed-bed system, water tank and connecting tube;
Steam condensate interchanger, comprises condenser, lime set supervisor, pump, chemicals dosing plant, control valve, lime set arm and interchanger;
One end of described lime set supervisor is provided with steam-in, from steam-in place, lime set supervisor be connected with condenser and pump successively, the lime set connected with pumping water end (W.E.) is responsible for again the lime set arm parallel with a group and is communicated with, on described lime set arm, be connected with interchanger, and the terminal of lime set arm is interconnected, and pool a connecting tube;
One group of described parallel lime set arm at least comprises two lime set arms;
Described with pump the lime set supervisor that water end (W.E.) is connected and be connected with chemicals dosing plant by connecting tube again;
On lime set supervisor between described pump and chemicals dosing plant, flow detector is also housed;
A control valve is equipped with in described chemicals dosing plant and lime set supervisor's junction;
Described flow detector, controller and control valve forms interpolation pharmaceutical quantities open-loop control system, the output terminal of flow detector is connected with the input terminus of controller, the flux values of detection is inputed to controller by flow detector, controller obtains work output by built-in algorithms computing, the output terminal of controller is connected with the input terminus of control valve, make the controller work output aperture of adjusting control valve in real time, in order to control chemicals dosing plant to the dosage that adds medicament in lime set house steward;
The rear of steam condensate interchanger arranges accurate filter, the described output terminal of steam condensate interchanger and the water-in of accurate filter are connected, the rear of accurate filter is provided with plate-type heat exchanger, the water outlet of described accurate filter is connected with the hot-fluid inlet end of plate-type heat exchanger, the water outlet end of plate-type heat exchanger is connected with the entrance in reverse osmosis produced pond, the outlet in reverse osmosis produced pond is connected with the water inlet of mixed-bed system, and the water outlet of mixed-bed system is connected with the entrance of water tank;
Described water tank is the water tank with cooling system, it comprises the hollow interlayer between internal layer water tank, outer water tank and internal layer water tank and outer water tank, liquid level sensor and temperature sensor are equipped with in the inside of described internal layer water tank, the bottom of described outer water tank is provided with cold water inlet, its top is provided with cooling water outlet, cold water inlet communicates with described hollow interlayer with cooling water outlet, and water tank directly takes back PTA production equipment by pipeline;
Further, described medicament is oxygen scavenger, pH value conditioning agent and the agent of clear pot;
Preferably, pH value conditioning agent is neutralizing amine;
Further, described pump is impeller pump;
Further, described accurate filter is more medium filter, and filtrate is quartz sand, hard coal and manganese sand;
Further, the rear of described accurate filter is provided with high-pressure pump, and described mixed-bed system is with mixed bed force (forcing) pump;
Further, the cooling water outlet of described water tank is connected with cold water source by pipeline;
Further, the connection line of described water tank and PTA production equipment is provided with valve;
Preferably, described valve is magnetic valve.
The beneficial effects of the utility model are: the utility model has designed the system of filtration, desalination processing and the recycle of discharged steam in a kind of PTA production process, system flow is brief, be easy to control, there is the multi-functional of collection, processing, storage and recycling, relate to each step of water cycle and utilization, application the utility model, solve in PTA production process directly discharge and the problem of the Water Energy waste that causes of a large amount of lime sets, improved the measurable and controllable property of system simultaneously.The utility model by steam and liquid water mutually change, recycle, both saved water resources, also reduced the production cost of factory.
Brief description of the drawings
Fig. 1 is system architecture schematic diagram of the present utility model;
Fig. 2 is the structural representation of steam condensate interchanger.
In figure: 10, steam condensate interchanger, 11, condenser, 12, lime set supervisor, 13, pump, 14, chemicals dosing plant, 15, control valve, 16, lime set arm, 17, interchanger, 20, accurate filter, 30, plate-type heat exchanger, 40, reverse osmosis produced pond, 50, mixed-bed system, 60, water tank.
Embodiment
In conjunction with the drawings and the specific embodiments, native system is further illustrated:
Water circulation utilization system in a kind of PTA production process as shown in Figure 1, comprises steam condensate interchanger 10, accurate filter 20, plate-type heat exchanger 30, reverse osmosis produced pond 40, mixed-bed system 50, water tank 60 and connecting tube;
Steam condensate interchanger 10 as shown in Figure 2, comprises condenser 11, lime set supervisor 12, pump 13, chemicals dosing plant 14, control valve 15, lime set arm 16 and interchanger 17;
One end of described lime set supervisor 12 is provided with steam-in, from steam-in place, lime set supervisor 12 is connected with condenser 11 and pump 13 successively, the lime set connected with the pump 13 water sides supervisor 12 again lime set arm 16 parallel with a group is communicated with, on described lime set arm 16, be connected with interchanger 17, and the terminal of lime set arm 16 is interconnected, and pool a connecting tube;
One group of described parallel lime set arm 16 at least comprises two lime set arms;
The described lime set being connected with pump 13 water sides supervisor 12 is connected with chemicals dosing plant 14 by connecting tube again;
On lime set supervisor 12 between described pump 13 and chemicals dosing plant 14, flow detector is also housed;
Described chemicals dosing plant 14 is equipped with a control valve 15 with lime set supervisor 12 junction; Described flow detector, controller and control valve 15 form interpolation pharmaceutical quantities open-loop control system, the output terminal of flow detector is connected with the input terminus of controller, the flux values of detection is inputed to controller by flow detector, controller obtains work output by built-in algorithms computing, the output terminal of controller is connected with the input terminus of control valve 15, make the controller work output aperture of adjusting control valve 15 in real time, in order to control chemicals dosing plant 14 to the dosage that adds medicament in lime set house steward 12;
The rear of steam condensate interchanger 10 arranges accurate filter 20, the output terminal of described steam condensate interchanger 10 is connected with the water-in of accurate filter 20, the rear of accurate filter 20 is provided with plate-type heat exchanger 30, the water outlet of described accurate filter 20 is connected with the hot-fluid inlet end of plate-type heat exchanger 30, the water outlet end of plate-type heat exchanger 30 is connected with the entrance in reverse osmosis produced pond 40, the outlet in reverse osmosis produced pond 40 is connected with the water inlet of mixed-bed system 50, and the water outlet of mixed-bed system 50 is connected with the entrance of water tank 60;
Described water tank 60 is the water tank with cooling system, it comprises the hollow interlayer between internal layer water tank, outer water tank and internal layer water tank and outer water tank, liquid level sensor and temperature sensor are equipped with in the inside of described internal layer water tank, the bottom of described outer water tank is provided with cold water inlet, its top is provided with cooling water outlet, cold water inlet communicates with described hollow interlayer with cooling water outlet, and water tank 60 directly takes back PTA production equipment by pipeline;
Further, described medicament is oxygen scavenger, pH value conditioning agent and the agent of clear pot;
Preferably, pH value conditioning agent is neutralizing amine;
Further, described pump 13 is impeller pump;
Further, described accurate filter 20 is more medium filter, and filtrate is quartz sand, hard coal and manganese sand;
Further, the rear of described accurate filter 20 is provided with high-pressure pump, and described mixed-bed system 50 is with mixed bed force (forcing) pump;
Further, the cooling water outlet of described water tank 60 is connected with cold water source by pipeline;
Further, described water tank 60 is provided with valve with the connection line of PTA production equipment;
Preferably, described valve is magnetic valve.
A water circulation utilization system in PTA production process, its technique is:
The high-temperature steam producing in a, PTA production process, by connecting tube, enters steam condensate interchanger 10, is condensed into liquid water through the condensed high-temperature steam of steam condensate interchanger 10;
B, liquid water flow out from the output terminal of steam condensate interchanger 10, by connecting tube, enter accurate filter 20, and liquid water is the suspended particle in elimination water and organic colloid in accurate filter 20, flow out from the output terminal of accurate filter 20;
Water after c, filtration, by connecting tube, enters plate-type heat exchanger 30 and carries out secondary heat exchange processing, and further the water of condensation after heat exchange flows out from the output terminal of plate-type heat exchanger 30, by connecting tube, enters reverse osmosis produced pond 40;
D, water of condensation except after the salt ion in anhydrating, by connecting tube, enter mixed-bed system 50 in reverse osmosis produced pond 40;
E, water carry out ion exchange treatment in mixed-bed system 50, slough the salt in water, and the pure water after desalination flows out from the output terminal of mixed-bed system 50, by connecting tube, enters water tank 60 and stores;
Storage of water in f, water tank 60 is directly for PTA production equipment supplies water, the output terminal of water tank 60 is connected with the production equipment of PTA by connecting tube, water in water tank 60 flows out from the output terminal of water tank 60, flows into the production equipment of PTA by connecting tube, again for the process for processing of PTA.
Claims (9)
1. the water circulation utilization system in PTA production process, is characterized in that: comprise steam condensate interchanger (10), accurate filter (20), plate-type heat exchanger (30), reverse osmosis produced pond (40), mixed-bed system (50), water tank (60) and connecting tube;
Described steam condensate interchanger (10), comprises condenser (11), lime set supervisor (12), pump (13), chemicals dosing plant (14), control valve (15), lime set arm (16) and interchanger (17);
One end of described lime set supervisor (12) is provided with steam-in, from steam-in place, lime set supervisor (12) is connected with condenser (11) and pump (13) successively, the lime set connected with pump (13) water side supervisor (12) the again lime set arm (16) parallel with a group is communicated with, on described lime set arm (16), be connected with interchanger (17), and the terminal of lime set arm (16) is interconnected, and pool a connecting tube;
One group of described parallel lime set arm (16) at least comprises two lime set arms;
The described lime set being connected with pump (13) water side supervisor (12) is connected with chemicals dosing plant (14) by connecting tube again;
On lime set supervisor (12) between described pump (13) and chemicals dosing plant (14), flow detector is also housed;
Described chemicals dosing plant (14) is equipped with a control valve (15) with lime set supervisor's (12) junction;
Described flow detector, controller and control valve (15) forms interpolation pharmaceutical quantities open-loop control system, the output terminal of flow detector is connected with the input terminus of controller, the flux values of detection is inputed to controller by flow detector, controller obtains work output by built-in algorithms computing, the output terminal of controller is connected with the input terminus of control valve (15), make the controller work output aperture of adjusting control valve (15) in real time, in order to control chemicals dosing plant (14) to the middle dosage that adds medicament of lime set house steward (12);
The rear of steam condensate interchanger (10) arranges accurate filter (20), the output terminal of described steam condensate interchanger (10) is connected with the water-in of accurate filter (20), the rear of accurate filter (20) is provided with plate-type heat exchanger (30), the water outlet of described accurate filter (20) is connected with the hot-fluid inlet end of plate-type heat exchanger (30), the water outlet end of plate-type heat exchanger (30) is connected with the entrance of reverse osmosis produced pond (40), the outlet in reverse osmosis produced pond (40) is connected with the water inlet of mixed-bed system (50), the water outlet of mixed-bed system (50) is connected with the entrance of water tank (60),
Described water tank (60) is the water tank with cooling system, it comprises the hollow interlayer between internal layer water tank, outer water tank and internal layer water tank and outer water tank, liquid level sensor and temperature sensor are equipped with in the inside of described internal layer water tank, the bottom of described outer water tank is provided with cold water inlet, its top is provided with cooling water outlet, cold water inlet communicates with described hollow interlayer with cooling water outlet, and water tank (60) directly takes back PTA production equipment by pipeline.
2. the water circulation utilization system in PTA production process according to claim 1, is characterized in that: described medicament is oxygen scavenger, pH value conditioning agent and the agent of clear pot.
3. the water circulation utilization system in PTA production process according to claim 2, is characterized in that: pH value conditioning agent is neutralizing amine.
4. the water circulation utilization system in PTA production process according to claim 1, is characterized in that: described pump (13) is impeller pump.
5. the water circulation utilization system in PTA production process according to claim 1, is characterized in that: described accurate filter (20) is more medium filter.
6. the water circulation utilization system in PTA production process according to claim 1, is characterized in that: the rear of described accurate filter (20) is provided with high-pressure pump, and described mixed-bed system (50) is with mixed bed force (forcing) pump.
7. the water circulation utilization system in PTA production process according to claim 1, is characterized in that: the cooling water outlet of described water tank (60) is connected with cold water source by pipeline.
8. the water circulation utilization system in PTA production process according to claim 1, is characterized in that: described water tank (60) is provided with valve with the connection line of PTA production equipment.
9. the water circulation utilization system in PTA production process according to claim 8, is characterized in that: described valve is magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320788593.3U CN203668146U (en) | 2013-12-02 | 2013-12-02 | Water recycling system in PTA production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320788593.3U CN203668146U (en) | 2013-12-02 | 2013-12-02 | Water recycling system in PTA production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203668146U true CN203668146U (en) | 2014-06-25 |
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ID=50964462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320788593.3U Withdrawn - After Issue CN203668146U (en) | 2013-12-02 | 2013-12-02 | Water recycling system in PTA production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203668146U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671495A (en) * | 2013-12-02 | 2015-06-03 | 逸盛大化石化有限公司 | Water recycling system in PTA (pure terephthalic acid) production process |
| CN104696946A (en) * | 2015-01-12 | 2015-06-10 | 聊城市鲁西化工工程设计有限责任公司 | Process and process system for steam exhaust liquid heat energy recovery and desalted water recovery |
-
2013
- 2013-12-02 CN CN201320788593.3U patent/CN203668146U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671495A (en) * | 2013-12-02 | 2015-06-03 | 逸盛大化石化有限公司 | Water recycling system in PTA (pure terephthalic acid) production process |
| CN104671495B (en) * | 2013-12-02 | 2016-06-08 | 逸盛大化石化有限公司 | Water circulation utilization system in PTA production process |
| CN104696946A (en) * | 2015-01-12 | 2015-06-10 | 聊城市鲁西化工工程设计有限责任公司 | Process and process system for steam exhaust liquid heat energy recovery and desalted water recovery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140625 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |