CN208200647U - Waste water retention tower - Google Patents
Waste water retention tower Download PDFInfo
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- CN208200647U CN208200647U CN201820543525.3U CN201820543525U CN208200647U CN 208200647 U CN208200647 U CN 208200647U CN 201820543525 U CN201820543525 U CN 201820543525U CN 208200647 U CN208200647 U CN 208200647U
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- waste water
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- retention tower
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Abstract
Provided by the utility model is waste water retention tower.Tower main body is pumped by flash tank bottom by endfeed on tower, waste water retention tower lower body is connect with vapour system, waste water retention tower main body bottom end is squeezed into waste liquid in precipitation separation tank by retention tower waste water pump, waste water retention tower main body top is connected with diffusion overhead condenser and vacuum system, waste liquid is squeezed into solvent separating tank by water ring vacuum pump by vacuum system, solvent separating tank bottom end is connected with solvent separating liquid delivery pump, and waste oil is squeezed by waste oil slot by solvent separating liquid delivery pump, waste oil slot upper end connects PO process seal tank, it is to be filled that waste oil slot lower end connects DICP pump, the solvent separating tank other end connects moisture chaotropic pump, the water isolated is returned in waste water retention tower and is recycled.The utility model can reduce organic matter and COD value in waste water, achieve the purpose that environmental protection.It is suitable for being used as waste water retention tower.
Description
Technical field
The utility model relates to waste water retention tower technical transformation fields, specially waste water retention tower.
Background technique
It is higher and higher for the attention degree in terms of environmental protection recently as country, the discharge of chemical company's waste water is referred to
Mark requires also to be increasingly stringenter, and the pillar product of the big chemical industry in the propylene oxide series of products side of being, total productive capacity reaches 120,000 t/
A, two covering devices are all made of chlorohydrination method production technology.The shortcomings that chlorohydrination method is that water resources consumption is big, generate a large amount of waste water and
Waste residue, every production 1t propylene oxide generate the saponification waste-water of 40 ~ 50t chloride and the waste residue of 2t or more, which has temperature
" five is high " feature that degree is high, pH value is high, chloride content is high, COD content is high and suspension content is high, it is difficult to handle.For this purpose, we
It proposes a kind of retention tower technical reform scheme, has solved problem above.
Utility model content
In order to overcome disadvantage of the existing technology, the utility model provides waste water retention tower.The tower passes through, and solves waste water
The technical issues of diffusion tower structure designs.
The utility model solves scheme used by technical problem:
Tower main body is pumped by flash tank bottom by endfeed on tower, and waste water retention tower lower body is connect with vapour system, is given up
Water retention tower main body bottom end is squeezed into waste liquid in precipitation separation tank by retention tower waste water pump, waste water retention tower main body top and expansion
It dissipates overhead condenser to be connected with vacuum system, waste liquid is squeezed into solvent separating tank, solvent point by water ring vacuum pump by vacuum system
It is connected from trench bottom one end with solvent separating liquid delivery pump, and waste oil is squeezed by waste oil slot by solvent separating liquid delivery pump, gives up
Oil groove upper end connects PO process seal tank, and waste oil slot lower end connects DICP and pumps to be filled, solvent separating tank other end connection moisture
Chaotropic pump, the water isolated is returned in waste water retention tower and is recycled.
Good effect, compared with prior art, waste water retention tower mainly reduces dichloro isopropyl in waste water to the utility model
The content of ether, according to the actual conditions of production, the content of nemamort in the intermediate products chloropropyl alcohol that acidizing process generates
About 0.025(wt) %, chloropropyl alcohol yield is 430t/h, therefore, about generates by-product two per hour in production of propylene oxide
Chlorine isopropyl ether is 107.5kg, and by saponifying process, this organic matter is not reacted with the material participation in saponification, and therefore, this part has
Machine object is most of to drain into waste water retention tower by saponification column bottom, the nemamort content energy after waste water retention tower, in waste water
Enough drop to 0.015(wt) % or so, the wastewater flow rate of discharge is about 530t, consumes steam 5t/h, increases power electric consumption
88KW/h.After waste water retention tower, theoretically per hour can be recycled nemamort be about 07.5-530 × 1000 ×
0.015%=28kg is saved for sale by zinc-plated bucket packaging.The discharge of organic matter reduces, and COD value can also decrease in waste water,
Environmental protection is achieved the purpose that.It is suitable for being used as waste water retention tower.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure, 1. tower main bodys, 2. vacuum systems, 3. retention tower condensers, 4. solvent separating tanks, 5. waste oil slots, 6. steam
System, 7. flash tank bottoms pump, 8. retention tower waste water pumps, 9. precipitation separation tanks, 10. water ring vacuum pumps, the conveying of 11. solvent separating liquids
Pump, 11.1. moisture chaotropic pump, 12. process seal tanks, 13.DICP pump.
Specific embodiment
According to the figure, tower main body 1 is by flash tank bottom pump 7 by endfeed on tower, waste water retention tower lower body and steam
System 6 connects, and waste water retention tower main body bottom end is squeezed into waste liquid in precipitation separation tank 9 by retention tower waste water pump 8, waste water diffusion
Tower main body top is connected with diffusion overhead condenser 3 and vacuum system 2, and vacuum system is squeezed into waste liquid by water ring vacuum pump 10
Solvent separating tank 4, solvent separating tank bottom end are connected with solvent separating liquid delivery pump 11, and pass through solvent separating liquid delivery pump
Waste oil is squeezed into waste oil slot 5, waste oil slot upper end connects PO process seal tank 12, and connection DICP pump 13 in waste oil slot lower end is to be filled,
The solvent separating tank other end connects moisture chaotropic pump 11.1, and the water isolated is returned in waste water retention tower and is recycled.
Further, waste liquid is squeezed into precipitation separation tank by retention tower waste water pump by the waste water retention tower main body bottom end
In, the boiling point of water is reduced using negative pressure, so that waste water is entered moment water in tower and becomes gas phase, while organic matter passes through with steam
The effect of air lift is carried over tower top.
Further, organic matter, into solvent separating tank, due to water and has as steam is after the condensation of retention tower condenser
The density of machine object is different, while the two is immiscible, has achieved the effect that separation by sedimentation.
Further, a baffle is equipped in solvent separating tank, to separate water and waste oil, the water phase on upper layer is overflow by partition
The other side is flowed to, main body tower is transmitted back to by moisture chaotropic delivery pump, lower layer forms oily mutually defeated by solvent separating liquid delivery pump
It send into waste oil slot, it is to be filled.
Steam consumption quantity: 42Kg/h, load: 7.3Kg/h, Ps/Pd:32/120 KpaA, DT:50 DEG C.
Further, waste water retention tower tower pressure optimal control index is 40~45 kPaA (absolute pressure).
Further, the control of waste water retention tower column bottom temperature is between 78~80 DEG C.
Technical principle and the course of work:
Containing impurity and grease and incomplete reactant in waste water, when waste water in waste water retention tower through steam by heating
With vacuumize, water forms steam, is discharged from tower top, is condensed into liquid water by condenser while discharge, tower bottom impurity warp
It crosses retention tower waste water pump and squeezes into precipitation separation tank, carry out sedimentation impurity, the upper layer of sedimentation is clear water, the liquid of retention tower top discharge
State substance is sent to solvent separating tank after vacuum system is evacuated, and carries out the separation of water and solvent, solvent separating tank lower part
Solvent separating liquid delivery pump will separate solution and squeeze into waste oil slot, and the oily substance on waste oil slot upper layer squeezes into process seal tank, and liquid
State water is returned in retention tower by DICP pump to be continued to use as liquid water cycle.
It can make organic matter solvent, oil and the solid impurity separation in waste water by retention tower, keep purification of waste water sharp again
With.
The front and back COD value for being passed through steam for retention tower compares
(1) when not being passed through steam, COD averagely declines 152ppm after the processing of waste water retention tower.
(2) it is passed through a small amount of steam about 2t/h, COD averagely has dropped 319.7ppm after retention tower is handled.
Claims (2)
1. waste water retention tower, it is characterized in that:
Tower main body (1) is by flash tank bottom pump (7) by endfeed on tower, and waste water retention tower lower body and vapour system (6) are even
It connects, waste water retention tower main body bottom end is squeezed into waste liquid in precipitation separation tank (9) by retention tower waste water pump (8), waste water retention tower
Main body top is connected with diffusion overhead condenser (3) and vacuum system (2), and vacuum system passes through water ring vacuum pump (10) for waste liquid
It squeezes into solvent separating tank (4), solvent separating tank bottom end is connected with solvent separating liquid delivery pump (11), and is separated by solvent
Liquid delivery pump squeezes into waste oil waste oil slot (5), and waste oil slot upper end connects PO process seal tank (12), and waste oil slot lower end connects DICP
Pump (13) is to be filled, and the solvent separating tank other end connects moisture chaotropic pump (11.1), and the water isolated is returned waste water retention tower
Middle recycling.
2. waste water retention tower according to claim 1, it is characterized in that: being equipped with the one of separation water and waste oil in solvent separating tank
A baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820543525.3U CN208200647U (en) | 2018-04-17 | 2018-04-17 | Waste water retention tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820543525.3U CN208200647U (en) | 2018-04-17 | 2018-04-17 | Waste water retention tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208200647U true CN208200647U (en) | 2018-12-07 |
Family
ID=64524464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820543525.3U Active CN208200647U (en) | 2018-04-17 | 2018-04-17 | Waste water retention tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208200647U (en) |
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2018
- 2018-04-17 CN CN201820543525.3U patent/CN208200647U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220825 Address after: 125000 office building, building 1-113, chemical Street, Lianshan District, Huludao City, Liaoning Province Patentee after: Hangjin Jinxi Chlor Alkali Chemical Co.,Ltd. Address before: No. 1, Lianshan chemical Street, Huludao, Liaoning Province Patentee before: HANGJIN TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |