CN104671568B - Water recycling system and process in PTA production process - Google Patents
Water recycling system and process in PTA production process Download PDFInfo
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- CN104671568B CN104671568B CN201310642735.XA CN201310642735A CN104671568B CN 104671568 B CN104671568 B CN 104671568B CN 201310642735 A CN201310642735 A CN 201310642735A CN 104671568 B CN104671568 B CN 104671568B
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- Prior art keywords
- water
- heat exchanger
- pta
- mixed
- steam
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000004064 recycling Methods 0.000 title abstract 3
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 238000010612 desalination reaction Methods 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 238000005342 ion exchange Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 abstract 3
- 239000010410 layer Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 3
- 239000003830 anthracite Substances 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- -1 salt ion Chemical class 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a water recycling system and a water recycling process in a PTA (pure terephthalic acid) production process, which belong to the field of chemical industry, and comprise a steam condensate heat exchanger, a precision filter, a plate heat exchanger, a reverse osmosis water producing tank, a mixed bed system, a water tank and a connecting pipeline; the steam condensate heat exchanger is connected with a precision filter through a connecting pipeline, penetrates through the precision filter to be connected with the plate heat exchanger, and then is sequentially connected with a reverse osmosis water production tank, a mixed bed system and a water tank. The system is short in flow and easy to control in production process, the problem of environmental pollution caused by direct discharge of condensate is solved, and meanwhile, steam and liquid water are converted and recycled, so that water resources are saved, and the production cost of a factory is reduced.
Description
Technical field
The present invention relates to water treatment system and the technique of chemical industry, particularly relate to a kind of for
Water circulation utilization system in PTA production process and technique.
Background technology
PTA is the primary raw material of polyester product, the fast development produced along with chemical industry,
The production technology of PTA is improved the most therewith.Existing production PTA technique mostly use low temperature or
High-temperature oxidation, has short flow, a plurality of advantages such as production technology is easily controlled, low cost.
During producing PTA, owing to water and steam consumption are relatively big, have a large amount of solidifying in process of production
Liquid directly discharges, and not only pollutes environment, wastes substantial amounts of water resource, too increases production
Cost.
Summary of the invention
The present invention is the defect in order to make up above-mentioned technology, it is provided that it is raw that one is applied to PTA
Water circulation utilization system during product and technique, this technological process is brief, easily controllable, solves
In PTA production process of having determined a large amount of lime sets directly discharge and cause Water Energy waste problem.
To achieve these goals, the technical scheme is that
A kind of water circulation utilization system in PTA production process, including steam condensate heat exchanger,
Accurate filter, plate type heat exchanger, reverse osmosis produced pond, mixed-bed system, water tank and connection
Pipeline；
Steam condensate heat exchanger one end is provided with steam inlet, and connecting tube is passed through in described steam inlet
Road is joined directly together with PTA process units, and the rear of steam condensate heat exchanger arranges secondary filter
Device, the described outfan of steam condensate heat exchanger is connected with the water inlet of accurate filter, essence
The rear of close filter is provided with plate type heat exchanger, and the outlet of described accurate filter is with board-like
The thermal fluid inlet end of heat exchanger is connected, the outlet of plate type heat exchanger and reverse osmosis produced pond
Entrance is connected, and the outlet in reverse osmosis produced pond is connected with the water inlet of mixed-bed system, mixed-bed system
Outlet be connected with the entrance of water tank, water tank by pipeline directly take back PTA produce dress
Put；
Further, described accurate filter is more medium filter, and filtrate is quartz sand,
Anthracite and manganese sand；
Further, described accurate filter rear is provided with high-pressure pump, described mixed-bed system
With mixed bed force (forcing) pump.
Water circulation use technique in a kind of PTA production process, the PTA described in application produces
During water circulation utilization system, its technique is:
The high-temperature steam produced in a, PTA production process, by connecting pipeline, enters steam
Lime set heat exchanger, is condensed into aqueous water through the condensed high-temperature steam of steam condensate heat exchanger；
B, aqueous water flow out from the outfan of steam condensate heat exchanger, by connecting pipeline, enter
Entering accurate filter, aqueous water filters off the particle in water and organic gel in accurate filter
Body, flows out from the outfan of accurate filter；
Water after c, filtration, by connecting pipeline, enters plate type heat exchanger and carries out at secondary heat exchange
Reason, the condensed water after further heat exchange flows out from the outfan of plate type heat exchanger, passes through connecting tube
Road, enters reverse osmosis produced pond；
After d, condensed water remove the salt ion in water in reverse osmosis produced pond, pass through connecting tube
Road, enters mixed-bed system；
E, water carry out ion-exchange treatment in mixed-bed system, slough the salt in water, after desalination
Pure water flow out from the outfan of mixed-bed system, by connecting pipeline, enter water tank and store；
Storage water in f, water tank directly supplies water for PTA process units, and the outfan of water tank leads to
Crossing connection pipeline to be connected with the process units of PTA, the water in water tank is from the outfan of water tank
Flow out, flow into the process units of PTA by connecting pipeline, again for the production of PTA
Processing.
The beneficial effects of the present invention is: the present invention devises in a kind of PTA production process and arranges
Put the filtration of steam, desalination processes and the system that recycles, and this technological process is brief, be prone to
Control, apply the present invention, process the standard that water can reach to recycle, solve due to solidifying
The problem of environmental pollution that liquid directly discharges and causes, steam and aqueous water are mutually changed, meanwhile
Recycle, both saved water resource, also reduce the production cost of factory.
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of the present invention.
In figure: 1, steam condensate heat exchanger, 2, accurate filter, 3, plate type heat exchanger, 4,
Reverse osmosis produced pond, 5, mixed-bed system, 6, water tank.
Detailed description of the invention
In conjunction with the drawings and the specific embodiments, native system is further illustrated:
Embodiment 1:
The water circulation utilization system in a kind of PTA production process as shown in Figure 1, including steaming
Vapour lime set heat exchanger 1, accurate filter 2, plate type heat exchanger 3, reverse osmosis produced pond 4,
Mixed-bed system 5, water tank 6 and connection pipeline；
Steam condensate heat exchanger 1 one end is provided with steam inlet, and described steam inlet is by connecting
Pipeline is joined directly together with PTA process units, and the rear of steam condensate heat exchanger 1 arranges precision
Filter 2, the outfan of described steam condensate heat exchanger 1 and the water inlet of accurate filter 2
Mouth connects, and the rear of accurate filter 2 is provided with plate type heat exchanger 3, described accurate filter
The outlet of 2 is connected with the thermal fluid inlet end of plate type heat exchanger 3, going out of plate type heat exchanger 3
The mouth of a river is connected with the entrance in reverse osmosis produced pond 4, the outlet in reverse osmosis produced pond 4 and mixed bed system
The water inlet of system 5 is connected, and the outlet of mixed-bed system 5 is connected with the entrance of water tank 6, water
Case 6 directly takes back PTA process units by pipeline；
Further, described accurate filter 2 is more medium filter, and filtrate is quartz sand,
Anthracite and manganese sand；
Further, described accurate filter 2 rear is provided with high-pressure pump, described mixed bed system
System 5 is with mixed bed force (forcing) pump.
Water circulation use technique in a kind of PTA production process, the PTA described in application produces
During water circulation utilization system, its technique is:
The high-temperature steam produced in a, PTA production process, by connecting pipeline, enters steam
Lime set heat exchanger 1, is condensed into aqueous water through the condensed high-temperature steam of steam condensate heat exchanger 1；
B, aqueous water flow out from the outfan of steam condensate heat exchanger 1, by connecting pipeline,
Enter accurate filter 2, aqueous water filter off in accurate filter 2 particle in water and
Organic colloid, flows out from the outfan of accurate filter 2；
Water after c, filtration, by connecting pipeline, enters plate type heat exchanger 3 and carries out secondary heat exchange
Processing, the condensed water after further heat exchange flows out from the outfan of plate type heat exchanger 3, by even
Adapter road, enters reverse osmosis produced pond 4；
After d, condensed water remove the salt ion in water in reverse osmosis produced pond 4, by connecting
Pipeline, enters mixed-bed system 5；
E, water carry out ion-exchange treatment in mixed-bed system 5, slough the salt in water, desalination
After pure water flow out from the outfan of mixed-bed system 5, by connecting pipeline, enter water tank 6 and enter
Row stores；
Storage water in f, water tank 6 directly supplies water for PTA process units, the output of water tank 6
Holding and be connected with the process units of PTA by connection pipeline, the water in water tank 6 is from water tank 6
Outfan flow out, flow into the process units of PTA by connecting pipeline, again for PTA
Production and processing.
Embodiment 2:
With the water circulation system of cooling water tank, including steam condensate heat exchanger 1, secondary filter
Device 2, plate type heat exchanger 3, reverse osmosis produced pond 4, mixed-bed system 5, water tank 6 and connecting tube
Road；
Steam condensate heat exchanger 1 one end is provided with steam inlet, and described steam inlet is by connecting
Pipeline is joined directly together with PTA process units, and the rear of steam condensate heat exchanger 1 arranges precision
Filter 2, the outfan of described steam condensate heat exchanger 1 and the water inlet of accurate filter 2
Mouth connects, and the rear of accurate filter 2 is provided with plate type heat exchanger 3, described accurate filter
The outlet of 2 is connected with the thermal fluid inlet end of plate type heat exchanger 3, going out of plate type heat exchanger 3
Mouth of a river end is connected with the entrance in reverse osmosis produced pond 4, the outlet in reverse osmosis produced pond 4 and mixed bed
The water inlet of system 5 is connected, and the outlet of mixed-bed system 5 is connected with 6 entrances of water tank；
Described water tank 6 is the water tank with cooling system, and it includes internal layer water tank, outer layer water
Hollow interlayer between case and internal layer water tank and outer layer water tank, the inside of described internal layer water tank equipped with
Liquid level sensor and temperature sensor, the bottom of described outer layer water tank is provided with cold water inlet, its
Top is provided with cooling water outlet, and cold water inlet communicates with described hollow interlayer with cooling water outlet, water
Case 6 directly takes back PTA process units by pipeline, and described water tank 6 produces dress with PTA
The connection pipeline put is provided with valve；
Further, described accurate filter 2 is more medium filter, and filtrate is quartz sand,
Anthracite and manganese sand；
Further, described accurate filter 2 rear is provided with high-pressure pump, described mixed bed system
System 5 is with mixed bed force (forcing) pump；
Further, the cooling water outlet of described water tank 6 is connected with cold water source by pipeline；
Further, described water tank 6 and the valve on the connection pipeline of PTA process units
For electromagnetic valve.
The above, the only present invention preferably detailed description of the invention, but the protection model of the present invention
Enclosing and be not limited thereto, any those familiar with the art is in the skill of present disclosure
In the range of art, according to technical scheme and inventive concept equivalent in addition thereof or change
Become, all should contain within protection scope of the present invention.
Claims (4)
1. the water circulation utilization system in a PTA production process, it is characterised in that: include steam
Lime set heat exchanger (1), accurate filter (2), plate type heat exchanger (3), reverse osmosis produced pond (4),
Mixed-bed system (5), water tank (6) and connection pipeline；
Steam condensate heat exchanger (1) one end is provided with steam inlet, and described steam inlet is by even
Adapter road is joined directly together with PTA process units, and the rear of steam condensate heat exchanger (1) arranges essence
Close filter (2), the outfan of described steam condensate heat exchanger (1) and accurate filter (2)
Water inlet connects, and the rear of accurate filter (2) is provided with plate type heat exchanger (3), described precision
The outlet of filter (2) is connected with the thermal fluid inlet end of plate type heat exchanger (3), plate-type heat-exchange
The outlet of device (3) is connected with the entrance of reverse osmosis produced pond (4), going out of reverse osmosis produced pond (4)
Mouth is connected with the water inlet of mixed-bed system (5), and the outlet of mixed-bed system (5) enters with water tank (6)
Mouth is connected, and water tank (6) directly takes back PTA process units by pipeline.
Water circulation utilization system in PTA production process the most according to claim 1, it is special
Levy and be: described accurate filter (2) is more medium filter, and filtrate is quartz sand, smokelessly
Coal and manganese sand.
Water circulation utilization system in PTA production process the most according to claim 1, it is special
Levy and be: described accurate filter (2) rear is provided with high-pressure pump, described mixed-bed system (5)
With mixed bed force (forcing) pump.
4. the water circulation use technique in PTA production process, utilizes the PTA of claim 1
Water circulation utilization system in production process, it is characterised in that: its technique is:
The high-temperature steam produced in a, PTA production process, by connecting pipeline, enters steam
Lime set heat exchanger (1), is condensed into liquid through steam condensate heat exchanger (1) condensed high-temperature steam
Water；
B, aqueous water flow out from the outfan of steam condensate heat exchanger (1), by connecting pipeline,
Entering accurate filter (2), aqueous water filters off the particle in water in accurate filter (2)
And organic colloid, flow out from the outfan of accurate filter (2)；
Water after c, filtration, by connecting pipeline, enters plate type heat exchanger (3) and carries out secondary heat exchange
Processing, the condensed water after further heat exchange flows out from the outfan of plate type heat exchanger (3), by even
Adapter road, enters reverse osmosis produced pond (4)；
After d, condensed water remove the salt ion in water in reverse osmosis produced pond (4), by connecting
Pipeline, enters mixed-bed system (5)；
E, water carry out ion-exchange treatment in mixed-bed system (5), slough the salt in water, desalination
After pure water flow out from the outfan of mixed-bed system (5), by connecting pipeline, enter water tank (6)
Store；
Storage water in f, water tank (6) directly supplies water for PTA process units, the output of water tank (6)
Holding and be connected with the process units of PTA by connection pipeline, the water in water tank (6) is from water tank (6)
Outfan flow out, flow into the process units of PTA by connecting pipeline, again for PTA
Production and processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642735.XA CN104671568B (en) | 2013-12-02 | 2013-12-02 | Water recycling system and process in PTA production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642735.XA CN104671568B (en) | 2013-12-02 | 2013-12-02 | Water recycling system and process in PTA production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104671568A CN104671568A (en) | 2015-06-03 |
| CN104671568B true CN104671568B (en) | 2017-01-04 |
Family
ID=53307230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310642735.XA Active CN104671568B (en) | 2013-12-02 | 2013-12-02 | Water recycling system and process in PTA production process |
Country Status (1)
| Country | Link |
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| CN (1) | CN104671568B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10156289A1 (en) * | 2001-11-19 | 2003-06-18 | Nocado Armaturenfab Gmbh & Co | Assembly, useful for the preparation of pure water, for pharmaceutical and medical applications, has a reverse osmosis assembly with a permeate flow linked to a heat disinfecting station through a heat exchanger |
| CN202688138U (en) * | 2012-05-14 | 2013-01-23 | 成都市润德药业有限公司 | Raw water treatment reverse osmosis system |
| CN203668168U (en) * | 2013-12-02 | 2014-06-25 | 逸盛大化石化有限公司 | Water recycling system in PTA production process |
-
2013
- 2013-12-02 CN CN201310642735.XA patent/CN104671568B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104671568A (en) | 2015-06-03 |
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