CN207933211U - A kind of cellulose production sewage-treatment plant - Google Patents
A kind of cellulose production sewage-treatment plant Download PDFInfo
- Publication number
- CN207933211U CN207933211U CN201820071962.XU CN201820071962U CN207933211U CN 207933211 U CN207933211 U CN 207933211U CN 201820071962 U CN201820071962 U CN 201820071962U CN 207933211 U CN207933211 U CN 207933211U
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- pipeline
- forced circulation
- falling
- heating device
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Abstract
The utility model is related to cellulose production fields, especially a kind of cellulose production sewage-treatment plant, including a preheater, material is connected after preheater with the upper tube tank inlet of a falling film heating device, it is connected with a falling liquid film separation chamber by pipeline in the lower part material outlet of falling film heating device, the upper steam outlet of falling liquid film separation chamber is connected setting by pipeline with the entrance of an aeration tower, and the lower part outlet of falling liquid film separation chamber is connected by pipeline with a forced circulation heater.It is simple in structure, reasonable design, can pass through the boiling point of reduction water; sewage boiling is set to generate steam; then condensation collection is carried out by being imported into condensing unit after being filtered, washing to steam, keeps the water separated very clean, crystallization treatment is carried out again to the salt left in sewage; it can be directly used for Nacl after drying; working efficiency is greatly improved, the effect of brine separation is substantially increased, has saved production cost; dirty water reuse is realized, environment is protected.
Description
Technical field：
The utility model is related to cellulose production field, especially a kind of cellulose production sewage-treatment plant.
Background technology：
Currently, during producing cellulose, material is after the reaction of reaction kettle, in being carried out subsequently into neutralization kettle
And reaction, then material is filtered again, the sewage filtered out can be handled, in the prior art, the processing to sewage
The big method for mostly using multiple-effect evaporation detaches the brine in sewage, but in actual production, it is deposited using multiple-effect evaporation
In many problems, with the increase of effect number, the temperature difference loss of heat transfer increases so that and the production intensity of evaporator is greatly reduced,
Working efficiency is substantially reduced, inferior separating effect is caused, the steam separated is not clean, and cost of equipment is multiplied,
Considerably increase production cost.
Utility model content：
The utility model provides a kind of cellulose production sewage-treatment plant, it is simple in structure, reasonable design, can
By reducing the boiling point of water, sewage boiling is set to generate steam, then by importeding into condensation dress after being filtered, washing to steam
Condensation collection is carried out in setting, keeps the water separated very clean, crystallization treatment is carried out again to the salt left in sewage, after drying
Nacl is can be directly used for, whole device greatly improves working efficiency, and substantially increases the effect of brine separation, no
Production cost has only been saved, and has been truly realized dirty water reuse, has protected environment, has been solved existing in the prior art
Problem.
Used technical solution is the utility model to solve above-mentioned technical problem：
A kind of cellulose production sewage-treatment plant, including a preheater, material add after preheater with a falling liquid film
The upper tube tank inlet of hot device is connected, and is connected with a falling liquid film separation chamber by pipeline in the lower part material outlet of falling film heating device, drops
The upper steam outlet of UF membrane room is connected setting by pipeline with the entrance of an aeration tower, the lower part outlet of falling liquid film separation chamber
It is connected with a forced circulation heater by pipeline, a vacuum pump is equipped with outside forced circulation heater, vacuum pump passes through pipe
Road is connected setting with the shell side of forced circulation heater, and the medium tube in forced circulation heater is mutually followed by forced circulation pump
Ring connection setting, the steam (vapor) outlet of forced circulation heater are connected setting by pipeline with the entrance of aeration tower, forced circulation
The material outlet of heater is connected by pipeline with a crystallizer, and crystallizer is connected by pipeline with a thickener, thickener
Material outlet is connected by pipeline with a centrifuge, and centrifuge is connected by pipeline with a mother liquor tank, and mother liquor tank is passed through by pipeline
One mother liquor pumps the setting that is connected with crystallizer, and crystallizer is connected by pipeline with the entrance of aeration tower, the gas of the aeration tower
Outlet is connected by pipeline with a compressor, and the outlet of compressor is followed with the shell side of falling film heating device, pressure respectively by pipeline
The shell side of ring heater is connected setting, and the shell side of forced circulation heater is connected by pipeline with a condensate water pot, condensed water
Tank is connected setting by pipeline with the preheater；Preheater, falling film heating device, falling liquid film separation chamber, forced circulation heater,
Crystallizer, thickener, centrifuge, vacuum pump are connected with an indoor control system of control setting respectively.
Preferably, the top of falling film heating device upper tube box be equipped with a liquid distribution disk, on disk be equipped with it is several with
The corresponding through-hole of heat exchanger tube in falling film heating device.
The advantageous effect of the utility model using the above structure is simple in structure, reasonable design, can be by reducing water
Boiling point makes sewage boiling generate steam, is then condensed by being imported into condensing unit after being filtered, washing to steam
It collects, keeps the water separated very clean, crystallization treatment is carried out again to the salt left in sewage, can be directly used for work after drying
Industry salt, whole device greatly improve working efficiency, and substantially increase the effect of brine separation, have not only saved production
Cost, and it is truly realized dirty water reuse, protect environment.
Description of the drawings：
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of the liquid distribution disk of the utility model.
Fig. 3 is the overall flow schematic diagram of the utility model.
In figure, 1, preheater；2, falling film heating device；3, falling liquid film separation chamber；4, aeration tower；5, forced circulation heater；6、
Vacuum pump；7, forced circulation pump；8, crystallizer；9, thickener；10, centrifuge；11, mother liquor tank；12, compressor；13, condensed water
Tank；14, control room；15, liquid distribution disk；16, through-hole；17, mother liquor pumps.
Specific implementation mode：
In order to clarify the technical characteristics of the invention, below by specific implementation mode, and its attached drawing is combined, to this reality
It is described in detail with novel.
As shown in Figs. 1-3, a kind of cellulose production sewage-treatment plant, including a preheater 1, material pass through preheater
It is connected with the upper tube tank inlet of a falling film heating device 2 after 1, is dropped by pipeline and one in the lower part material outlet of falling film heating device 2
UF membrane room 3 is connected, and the outlet of the upper steam of falling liquid film separation chamber 3 is connected setting by pipeline with the entrance of an aeration tower 4, is dropped
The lower part outlet of UF membrane room 3 is connected by pipeline with a forced circulation heater 5, is equipped with outside forced circulation heater 5
One vacuum pump 6, vacuum pump 6 are connected setting by pipeline with the shell side of forced circulation heater 5, in forced circulation heater 5
Medium tube connection setting is recycled by 7 phase of forced circulation pump, the steam (vapor) outlet of forced circulation heater 5 passes through pipeline and gas washing
The entrance of tower 4 is connected setting, and the material outlet of forced circulation heater 5 is connected by pipeline with a crystallizer 8, crystallizer 8
It is connected with a thickener 9 by pipeline, the material outlet of thickener 9 is connected by pipeline with a centrifuge 10, and centrifuge 10 is logical
It crosses pipeline with a mother liquor tank 11 to be connected, mother liquor tank 11 is connected setting by pipeline through mother liquor pump 17 with crystallizer 8, crystallizer
8 are connected by pipeline with the entrance of aeration tower 4, and the gas vent of the aeration tower 4 is connected by pipeline with a compressor 12, pressure
The outlet of contracting machine 12 is connected with the shell side of the shell side of falling film heating device 2, forced circulation heater 5 setting respectively by pipeline,
The shell side of forced circulation heater 5 is connected by pipeline with a condensate water pot 13, and condensate water pot 13 passes through pipeline and the preheating
Device 1 is connected setting；Preheater 1, falling film heating device 2, falling liquid film separation chamber 3, forced circulation heater 5, crystallizer 8, thickener
9, centrifuge 10, vacuum pump 6 are connected with the control system in a control room 14 setting respectively.
It is equipped with a liquid distribution disk 15 at the top of 2 upper tube box of falling film heating device, several and falling liquid film is equipped on disk
The corresponding through-hole of heat exchanger tube 16 in heater 2.Feed liquid enters 2 upper tube box of falling film heating device, through liquid distribution disk 15, liquid
Distribution disk 15 can play the role of buffering to feed liquid, each for making feed liquid uniformly be distributed on liquid distribution disk 15 is led to
Then 16 position of hole avoids falling film heating device along each through-hole 16 uniformly and steadily into the inside of falling film heating device 2
Occurs dry wall phenomenon in 2.
It is preheated in use, feed liquid first passes around preheater 1, subsequently into falling film heating device 2, by liquid distribution
It is uniformly entered after disk 15 in falling film heating device 2, the steam that feed liquid generates in falling film heating device 2 carries a small amount of liquid phase and enters
Falling liquid film separation chamber 3, feed liquid generate steam after being sufficiently separated in falling liquid film separation chamber 3 and enter in aeration tower 4 from steam (vapor) outlet, falling liquid film
Remaining material liquid phase then enters in forced circulation heater 5 in separation chamber 3, and feed liquid is in forced circulation heater 5 by strong
System follows 7 pairs of feed liquids of pump and constantly carries out forced circulation flash distillation, and forced circulation pump 7 can provide enough cycle speed for crystal growth
Degree effectively quickly reduces solution supersaturation, avoids solution outburst nucleation, effectively improves and flow between the pipe in forced circulation heater 5
The colleague of speed, enhancing heat transfer avoids material plugging, works, makes strong in the vacuum pump 6 of 5 external connection of forced circulation heater
It is in negative pressure state in recirculation heater 5 processed, a kind of " relative vacuum " state is formed, effectively reduces the boiling point of water, make in feed liquid
The rapid explosive evaporation of water, while effectively avoiding impurity soluble easily in water that vapor is followed to evaporate together, greatly improve and isolate
The clean level of the vapor come, the steam of generation enter in aeration tower 4, and remaining liquid phase, which then enters in crystallizer 8, is steamed
Hair crystallization, enters from the magma being discharged in crystallizer 8 in thickener 9, thickener 9 plays effectively the degree of supersaturation in magma
Elimination acts on, while as the feed pipe of centrifuge 10, having certain cushioning effect, so that system operation is more stablized smooth,
Material is completely separated after into centrifuge 10, isolates salt, Nacl can be done and directly used, the mother liquor after separation enters
It is stored in mother liquor tank 11, pumping 17 blowback crystallizers 8 again by mother liquor after condensed water and steam preheating is evaporated, and steam exists
Handled to suitable temperature through compressor 12 after being filtered processing in aeration tower 4, then again return to falling film heating device 2 with it is strong
In recirculation heater 5 processed, this some vapor in falling film heating device 2 and forced circulation heater 5 with condensed after material-heat-exchanging
For water, imports after condensate water pot 13 in entering preheater 1, play the role of preheating material.What whole system made to separate
Water is very clean, carries out crystallization treatment again to the salt left in sewage, Nacl is can be directly used for after drying, whole device is very big
Ground improves work efficiency, and substantially increases the effect of brine separation, has not only saved production cost, but also really realize
Dirty water reuse, protects environment.
Above-mentioned specific implementation mode cannot function as the limitation to scope of protection of the utility model, for the skill of the art
For art personnel, any alternate modification or transformation made to the utility model embodiment all fall within the guarantor of the utility model
It protects in range.
Place is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.
Claims (2)
1. a kind of cellulose production sewage-treatment plant, it is characterised in that：Including a preheater, material after preheater with
The upper tube tank inlet of one falling film heating device is connected, and passes through pipeline and a falling liquid film separation chamber in the lower part material outlet of falling film heating device
It is connected, the outlet of the upper steam of falling liquid film separation chamber is connected setting by pipeline with the entrance of an aeration tower, falling liquid film separation chamber
Lower part outlet is connected by pipeline with a forced circulation heater, and a vacuum pump, vacuum are equipped with outside forced circulation heater
Pump is connected setting by pipeline with the shell side of forced circulation heater, and the medium tube in forced circulation heater is followed by pressure
The mutually cycle connection setting of ring pump, the steam (vapor) outlet of forced circulation heater are connected setting by pipeline with the entrance of aeration tower,
The material outlet of forced circulation heater is connected by pipeline with a crystallizer, and crystallizer is connected by pipeline with a thickener,
The material outlet of thickener is connected by pipeline with a centrifuge, and centrifuge is connected by pipeline with a mother liquor tank, and mother liquor tank is logical
It crosses pipeline and pumps the setting that is connected with crystallizer through a mother liquor, crystallizer is connected by pipeline with the entrance of aeration tower, the gas washing
The gas vent of tower is connected by pipeline with a compressor, and the outlet of compressor passes through the pipeline shell with falling film heating device respectively
Journey, forced circulation heater shell side be connected setting, the shell side of forced circulation heater passes through pipeline and a condensate water pot phase
Even, condensate water pot is connected setting by pipeline with the preheater；Preheater, falling liquid film separation chamber, is forced to follow falling film heating device
Ring heater, crystallizer, thickener, centrifuge, vacuum pump are connected with an indoor control system of control setting respectively.
2. a kind of cellulose production sewage-treatment plant according to claim 1, it is characterised in that：In falling film heating device
The top of upper tube box is equipped with a liquid distribution disk, is equipped on disk several corresponding with heat exchanger tube in falling film heating device logical
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820071962.XU CN207933211U (en) | 2018-01-15 | 2018-01-15 | A kind of cellulose production sewage-treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820071962.XU CN207933211U (en) | 2018-01-15 | 2018-01-15 | A kind of cellulose production sewage-treatment plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207933211U true CN207933211U (en) | 2018-10-02 |
Family
ID=63648708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820071962.XU Expired - Fee Related CN207933211U (en) | 2018-01-15 | 2018-01-15 | A kind of cellulose production sewage-treatment plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207933211U (en) |
-
2018
- 2018-01-15 CN CN201820071962.XU patent/CN207933211U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181002 Termination date: 20210115 |