CN204454674U - Waste water air-lift device - Google Patents
Waste water air-lift device Download PDFInfo
- Publication number
- CN204454674U CN204454674U CN201520002578.0U CN201520002578U CN204454674U CN 204454674 U CN204454674 U CN 204454674U CN 201520002578 U CN201520002578 U CN 201520002578U CN 204454674 U CN204454674 U CN 204454674U
- Authority
- CN
- China
- Prior art keywords
- waste water
- gas stripping
- stripping column
- lift device
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/141—Wind power
Abstract
The utility model discloses waste water air-lift device, it comprises gas stripping column, the top of described gas stripping column is provided with waste water shower, top is also provided with escape pipe, the middle part of gas stripping column is provided with packing layer, and bottom is connected with the blower fan of air-supply in gas stripping column, is also provided with rising pipe bottom gas stripping column, the waste water shower of described stripper-overhead is connected with wastewater inlet pipe, and the other end of wastewater inlet pipe is connected with plate-type heat exchanger.Waste water air-lift device of the present utility model, owing to being provided with plate-type heat exchanger on the wastewater inlet pipe of gas stripping column, waste water is lowered the temperature, wastewater temperature is made to remain on 60-70 DEG C, waste water not easily evaporates after entering gas stripping column, the flow of stripper-overhead escape pipe can not be affected, ensure that blower fan effectively sends into natural wind toward gas stripping column inside, improve gas stripping efficiency.In addition, because the wastewater temperature in gas stripping column is low, the amount of evaporation is fewer, dilutes, the use of energy efficient and de-salted water greatly after inputting vapor condensation by blower fan again to waste water.
Description
Technical field the utility model relates to wastewater treatment equipment, particularly relates to the waste water air-lift device of esterification.
The current trade effluent of background technology, in treating processes, often adopts air-lift device to take away small molecules foreign material in waste water.Such as, in the first step esterification reaction process that polyethylene terephthalate (PET) is polymerized, produce the by products such as water, ethers and aldehydes; The waste water wherein generated is maximum, often produces 1 ton of esterification products and produces 0.187 ton of waste water.Owing to containing the small molecular weight impurities such as micro-EG (ethylene glycol), ether, aldehydes in waste water, therefore esterification waste water COD value is generally at 20000 to 25000mg/L, just can enter sewage plant and carry out sewage disposal after must processing.The waste water that current esterification produces generally adopts gas stripping column to carry out air lift and removes small molecular weight impurity.
As shown in Figure 1, the principle that esterification waste water processes in gas stripping column is: the high density esterification waste water that esterifying kettle 05 exports adds from gas stripping column 01 top spray, packing layer 02 is provided with in tower, to extend the waste water dirty time, high-power blower 03 is provided with bottom gas stripping column 01, natural wind and steam (steam is inputted by vapour line 04) are sent in tower, natural wind and steam are upwards blowed by filler, waste water is dirty under gravity, small molecular weight impurity in waste water is blown out by natural wind and steam, thus reduction COD value of waste water, waste water after COD value declines carries out sewage disposal by pump delivery to sewage plant 06, with the natural wind of the small molecular weight impurity in waste water and steam be sent to incinerator 07 carry out fully burning after high altitude discharge.
The defect of current esterification waste water treatment process has: after 1, waste water enters gas stripping column, a large amount of water vapour evaporation, and after water vapor evaporation, stripper-overhead escape pipe flow increases, and resistance becomes large, hinders blower fan effectively to blow in tower, thus reduces gas stripping efficiency.2, in normal productive process, the 600Kg of need steam per hour enters gas stripping column, and its Main Function dilutes esterification waste water after being condensed into liquid phase pure water, thus reduces COD value in waste water.Steam needs special de-salted water to add hot preparation through boiler, therefore consumes a large amount of de-salted water and heat.
Summary of the invention is in order to overcome the deficiencies in the prior art, and the purpose of this utility model is to provide that a kind of gas stripping efficiency is high, the waste water air-lift device of less energy consumption.
Waste water air-lift device of the present utility model, it comprises gas stripping column, the top of described gas stripping column is provided with waste water shower, top is also provided with escape pipe, the middle part of gas stripping column is provided with packing layer, and bottom is connected with the blower fan of air-supply in gas stripping column, is also provided with rising pipe bottom gas stripping column, the waste water shower of described stripper-overhead is connected with wastewater inlet pipe, and the other end of wastewater inlet pipe is connected with plate-type heat exchanger.
Further, the described plate-type heat exchanger the other end connects the rising pipe of reaction kettle of the esterification.
Further, the wastewater temperature in described wastewater inlet pipe is 60-70 DEG C.
Further, the rising pipe bottom described gas stripping column is connected with sewage plant, is convenient to the waste water feeding sewage plant after by reduction COD value and processes.
Further, the escape pipe of described stripper-overhead is connected with incinerator, is convenient to the natural wind with waste water small molecular to be sent to incinerator and carries out fully burning rear high altitude discharge.
Adopt waste water air-lift device of the present utility model, owing to being provided with plate-type heat exchanger on the wastewater inlet pipe of gas stripping column, waste water is lowered the temperature, wastewater temperature is made to remain on 60-70 DEG C, waste water not easily evaporates after entering gas stripping column, the flow of stripper-overhead escape pipe can not be affected, ensure that blower fan effectively sends into natural wind toward gas stripping column inside, improve gas stripping efficiency.In addition, because the wastewater temperature in gas stripping column is low, the amount of evaporation is fewer, dilutes, the use of energy efficient and de-salted water greatly after inputting vapor condensation by blower fan again to waste water.
Accompanying drawing illustrates and is described in further detail the utility model below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of existing waste water air-lift device;
Fig. 2 is the structural representation of the utility model waste water air-lift device.
Embodiment
As shown in Figure 2, waste water air-lift device of the present utility model, it comprises gas stripping column 1, the top of described gas stripping column 1 is provided with waste water shower 2, and top is also provided with escape pipe 3, and the middle part of gas stripping column 1 is provided with packing layer 4, bottom is connected with the blower fan 5 of air-supply in gas stripping column, also be provided with rising pipe 6 bottom gas stripping column 1, the waste water shower 2 of described stripper-overhead is connected with wastewater inlet pipe 7, and the other end of wastewater inlet pipe 7 is connected with plate-type heat exchanger 8.
Described plate-type heat exchanger 8 the other end connects the rising pipe 9 of reaction kettle of the esterification 10.
Rising pipe 6 bottom described gas stripping column is connected with sewage plant 61, is convenient to the waste water feeding sewage plant 61 after by reduction COD value and processes.
The escape pipe 3 of described stripper-overhead is connected with incinerator 31, is convenient to the natural wind with waste water small molecular to be sent to incinerator 31 and carries out fully burning rear high altitude discharge.
The principle of work of waste water air-lift device of the present utility model is: the rising pipe 9 of polyethylene terephthalate (PET) reaction kettle of the esterification is connected with plate-type heat exchanger 8 one end, so esterification waste water is by after plate-type heat exchanger 8 cooling, enter wastewater inlet pipe 7 again, esterification waste water is sprayed onto packing layer 4 by the waste water shower 2 of wastewater inlet pipe 7 from stripper-overhead.
Natural wind is sent in tower by the high-power blower 5 bottom gas stripping column 1, natural wind is upwards blowed by filler, esterification waste water is dirty under gravity, small molecular weight impurity in waste water is blown out by natural wind, thus reduction COD value of waste water, waste water after COD value declines is delivered to sewage plant 61 by pump from rising pipe 6 bottom gas stripping column and carries out sewage disposal, natural wind with the small molecules in waste water by the escape pipe 3 of stripper-overhead be sent to incinerator 31 carries out fully burning after high altitude discharge.
Lowered the temperature by plate-type heat exchanger 8, the temperature of esterification waste water is 60-70 DEG C, so waste water not easily evaporates in gas stripping column; The flow of gas stripping column 1 top escape pipe 3 can not be affected, ensure that blower fan 5 effectively sends into natural wind toward gas stripping column inside, improve gas stripping efficiency.In addition, because the wastewater temperature in gas stripping column 1 is low, the amount of evaporation is fewer, dilutes, greatly the use of energy efficient and de-salted water after inputting vapor condensation by blower fan 5 again to waste water.
Claims (5)
1. waste water air-lift device, it comprises gas stripping column, it is characterized in that: the top of described gas stripping column is provided with waste water shower, top is also provided with escape pipe, the middle part of gas stripping column is provided with packing layer, and bottom is connected with the blower fan of air-supply in gas stripping column, is also provided with rising pipe bottom gas stripping column, the waste water shower of described stripper-overhead is connected with wastewater inlet pipe, and the other end of wastewater inlet pipe is connected with plate-type heat exchanger.
2. waste water air-lift device according to claim 1, is characterized in that: the described plate-type heat exchanger the other end connects the rising pipe of reaction kettle of the esterification.
3. waste water air-lift device according to claim 1, is characterized in that: the wastewater temperature in described wastewater inlet pipe is 60-70 DEG C.
4. waste water air-lift device according to claim 1, is characterized in that: the rising pipe bottom described gas stripping column is connected with sewage plant.
5. waste water air-lift device according to claim 1, is characterized in that: the escape pipe of described stripper-overhead is connected with incinerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520002578.0U CN204454674U (en) | 2015-01-05 | 2015-01-05 | Waste water air-lift device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520002578.0U CN204454674U (en) | 2015-01-05 | 2015-01-05 | Waste water air-lift device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204454674U true CN204454674U (en) | 2015-07-08 |
Family
ID=53661588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520002578.0U Expired - Fee Related CN204454674U (en) | 2015-01-05 | 2015-01-05 | Waste water air-lift device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204454674U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285415A (en) * | 2017-08-15 | 2017-10-24 | 佛山市亚科恒远科技有限公司 | A kind of new Wastewater Stripping Unit |
| CN113248068A (en) * | 2021-04-16 | 2021-08-13 | 天华化工机械及自动化研究设计院有限公司 | Resourceful treatment method and system for PTA oxidation tail gas washing tower discharge liquid |
-
2015
- 2015-01-05 CN CN201520002578.0U patent/CN204454674U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285415A (en) * | 2017-08-15 | 2017-10-24 | 佛山市亚科恒远科技有限公司 | A kind of new Wastewater Stripping Unit |
| CN113248068A (en) * | 2021-04-16 | 2021-08-13 | 天华化工机械及自动化研究设计院有限公司 | Resourceful treatment method and system for PTA oxidation tail gas washing tower discharge liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20180105 |