CN212864607U - Device for enriching diethylene glycol from permanent violet kneading wastewater - Google Patents
Device for enriching diethylene glycol from permanent violet kneading wastewater Download PDFInfo
- Publication number
- CN212864607U CN212864607U CN202021829933.9U CN202021829933U CN212864607U CN 212864607 U CN212864607 U CN 212864607U CN 202021829933 U CN202021829933 U CN 202021829933U CN 212864607 U CN212864607 U CN 212864607U
- Authority
- CN
- China
- Prior art keywords
- diethylene glycol
- kneading
- wastewater
- spray
- permanent violet
- 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.)
- Active
Links
Images
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model provides a device for enriching diethylene glycol from permanent violet kneading wastewater, which belongs to the technical field of permanent violet production wastewater treatment. The device comprises a permanent violet kneading wastewater gasification tower and a diethylene glycol enrichment assembly, wherein a feed end of the permanent violet kneading wastewater gasification tower is connected with a wastewater feed pipe, and a discharge end is provided with a steam discharge pipe. The diethylene glycol enrichment assembly comprises a spray absorption tower, a diethylene glycol concentrated solution tank and a circulating spray piece. The water and the diethylene glycol in the permanent violet kneading wastewater are gasified at high temperature to form high-temperature steam. The high-temperature steam and the diethylene glycol absorption liquid are in reverse contact in the spray absorption tower, so that the diethylene glycol is enriched in the absorption liquid, the enrichment of the diethylene glycol is realized, the equipment flux for recovering the diethylene glycol is reduced, the equipment floor area is reduced, and the operation cost is reduced. Meanwhile, the diethylene glycol is recovered from the high-concentration diethylene glycol absorption liquid, so that the recovery efficiency of the diethylene glycol is improved.
Description
Technical Field
The utility model belongs to the technical field of permanent purple production wastewater treatment, concretely relates to device of enrichment diethylene glycol in kneading waste water from permanent purple.
Background
In the process of preparing the refined product of the permanent violet through the kneading procedure, the generated wastewater mainly contains sodium chloride (with the content of about 20%) and diethylene glycol (with the content of less than 5%), and the wastewater with high salt content and high COD value has high treatment difficulty and causes the waste of the sodium chloride and the diethylene glycol.
In the prior art, the method of evaporating, concentrating, desalting and matching with macroporous adsorption resin adsorption is usually adopted to separate and recover the salt and organic matters in the wastewater, reduce the salt content and COD value of the wastewater and realize the resource utilization of the salt and the organic matters. However, the content of diethylene glycol in the permanent violet kneading wastewater is low, and if the macroporous adsorption resin is directly used for adsorbing or otherwise recovering the diethylene glycol, equipment with a large flux is needed for realizing the purpose, the occupied area of the equipment is large, the operation cost is high, and the efficiency of recovering the diethylene glycol from the wastewater with low concentration of the diethylene glycol is low.
Disclosure of Invention
In view of this, the utility model provides a device of enrichment diethylene glycol in kneading waste water from permanent purple to solve the permanent purple kneading waste water that exists among the prior art, the recovery plant area that the lower recovery plant that leads to of diethylene glycol concentration is big, the operation cost is high, the diethylene glycol recovery efficiency is low technical problem.
The utility model provides a technical scheme that its technical problem adopted is:
an apparatus for enriching diethylene glycol from permanent violet kneading wastewater, comprising:
the permanent violet kneading wastewater gasification tower is characterized in that the feed end of the permanent violet kneading wastewater gasification tower is connected with a wastewater feed pipe, and the discharge end of the permanent violet kneading wastewater gasification tower is provided with a steam discharge pipe; and
the diethylene glycol enrichment assembly comprises a spray absorption tower, a diethylene glycol concentrated solution pool and a circulating spray piece, wherein a gas-phase feed end at the bottom of the spray absorption tower is connected with the steam discharge pipe, the diethylene glycol concentrated solution pool is communicated with a liquid-phase discharge end at the bottom of the spray absorption tower, a feed end of the circulating spray piece is connected with the diethylene glycol concentrated solution pool, a discharge end of the circulating spray piece is arranged in the spray absorption tower, the circulating spray piece can convey the diethylene glycol concentrated solution in the diethylene glycol concentrated solution pool into the spray absorption tower, and the diethylene glycol concentrated solution is in reverse contact with the diethylene glycol-containing steam from the steam discharge pipe in the spray absorption tower.
Preferably, the permanent violet kneading wastewater gasification tower is a spray drying tower.
Preferably, the circulating spray assembly comprises a circulating pump and a spray distributor, an inlet of the circulating pump is connected with the diethylene glycol concentrated solution tank, and the spray distributor is arranged at an outlet end of the circulating pump and is positioned in the spray absorption tower.
Preferably, the diethylene glycol concentrated solution tank comprises a solution accumulating tank, a cooling device and a cooling solution tank which are sequentially arranged, the solution accumulating tank is connected with the bottom of the spray absorption tower, the cooling device is connected with the outlet end of the solution accumulating tank, the cooling solution tank is connected with the outlet end of the cooling device, and the circulating pump is arranged on the cooling solution tank.
Preferably, a plurality of contact beds are arranged in the spray absorption tower, and the spray distributor is arranged above each contact bed.
Preferably, the contacting bed layer is composed of at least one of Raschig rings, pall rings and ladder rings.
Preferably, the contact bed layer 211 is three layers, wherein the bottom layer is made of ceramic material, and the middle layer and the top layer are made of filler made of modified PP material.
Preferably, the feeding hole of the diethylene glycol concentrated solution tank is lower than the liquid phase discharging end at the bottom of the spray absorption tower.
Preferably, the diethylene glycol concentrated solution tank is connected with the wastewater feeding pipe.
According to the above technical scheme, the utility model provides a device of enrichment diethylene glycol in kneading waste water from permanent purple, its beneficial effect is: the permanent violet kneading wastewater gasification tower and the diethylene glycol enrichment assembly are arranged, the permanent violet kneading wastewater gasification tower is used for gasifying the permanent violet kneading wastewater, and water and diethylene glycol in the permanent violet kneading wastewater are gasified at high temperature to form high-temperature steam. High-temperature steam is introduced into the diethylene glycol enrichment assembly and reversely contacts with a diethylene glycol absorption liquid (such as saline water), and diethylene glycol and part of water in the high-temperature steam are absorbed by the diethylene glycol absorption liquid, so that the diethylene glycol is enriched in the absorption liquid, the absorption liquid in the diethylene glycol concentrated liquid pool is continuously recycled, the concentration of the diethylene glycol in the absorption liquid is continuously improved, the enrichment of the diethylene glycol is realized, the equipment flux for recovering the diethylene glycol is reduced, the equipment floor area is reduced, and the operation cost is reduced. Meanwhile, the diethylene glycol is recovered from the high-concentration diethylene glycol absorption liquid, so that the recovery efficiency of the diethylene glycol is improved.
Drawings
FIG. 1 is a schematic diagram of the line connection of a device for enriching diethylene glycol from permanent violet kneading wastewater.
In the figure: the device for enriching the diethylene glycol from the permanent violet kneading wastewater comprises a device 10 for enriching the diethylene glycol from the permanent violet kneading wastewater, a permanent violet kneading wastewater gasification tower 100, a wastewater feeding pipe 110, a steam discharging pipe 120, a diethylene glycol enriching assembly 200, a spray absorption tower 210, a contact bed layer 211, a diethylene glycol concentrated solution tank 220, a circulating spray piece 230, a circulating pump 231 and a spray distributor 232.
Detailed Description
The following combines the drawings of the utility model to further elaborate the technical scheme and technical effect of the utility model.
Referring to fig. 1, in an embodiment, an apparatus 10 for enriching diethylene glycol from permanent violet kneading wastewater is used for enriching diethylene glycol in permanent violet kneading wastewater to increase the mass concentration of diethylene glycol in permanent violet kneading wastewater. The device comprises: the device comprises a permanent violet kneading wastewater gasification tower 100 and a diethylene glycol enrichment assembly 200, wherein a feed end of the permanent violet kneading wastewater gasification tower 100 is connected with a wastewater feed pipe 110, and a discharge end is provided with a steam discharge pipe 120. The diethylene glycol enrichment assembly 200 comprises a spray absorption tower 210, a diethylene glycol concentrated solution tank 220 and a circulating spray piece 230, wherein a gas-phase feed end at the bottom of the spray absorption tower 210 is connected with the steam discharge pipe 120, the diethylene glycol concentrated solution tank 220 is communicated with a liquid-phase discharge end at the bottom of the spray absorption tower 210, a feed end of the circulating spray piece 230 is connected with the diethylene glycol concentrated solution tank 220, a discharge end of the circulating spray piece is arranged in the spray absorption tower 210, the circulating spray piece 230 can convey the diethylene glycol concentrated solution in the diethylene glycol concentrated solution tank 220 into the spray absorption tower 210, and the diethylene glycol concentrated solution is in reverse contact with diethylene glycol-containing steam from the steam discharge pipe 120 in the spray absorption tower 210.
For example, the permanent violet kneading wastewater gasification tower 100 is a spray drying tower. The permanent violet kneading wastewater firstly enters the permanent violet kneading wastewater gasification tower 100 through the wastewater feeding pipe 110, sodium chloride in the wastewater is separated out and recycled by adopting a spray drying process, and water and diethylene glycol are gasified at high temperature to form steam, and the steam is discharged into the spray absorption tower 210 through the steam discharging pipe 120 and flows from bottom to top. The diethylene glycol concentrated solution tank 220 stores a diethylene glycol absorption solution, which may be water or saline water, and in order to further improve the diethylene glycol enrichment efficiency and reduce the amount of wastewater, as a preferred option, the diethylene glycol absorption solution is desalted permanent violet kneading wastewater, and at this time, the diethylene glycol concentrated solution tank 220 is connected to the wastewater feed pipe 110, so that the desalted permanent violet kneading wastewater is discharged into the diethylene glycol concentrated solution tank 220. The circulating spraying piece 230 pumps the wastewater in the diethylene glycol concentrated solution pool 220 into the spraying absorption tower 210, and the wastewater is in reverse contact with the steam of the diethylene glycol and water from top to bottom to capture the diethylene glycol and part of the water, and simultaneously, the water in the diethylene glycol absorption solution volatilizes at high temperature, so that the diethylene glycol absorption solution is continuously concentrated, the mass concentration of the diethylene glycol is continuously improved, and experiments show that the mass concentration of the diethylene glycol in the diethylene glycol concentrated solution can reach 35-50%, and the balance is about 50% of saturated salt water.
The device 10 for enriching the diethylene glycol from the permanent violet kneading wastewater realizes the enrichment of the diethylene glycol, reduces the equipment flux for recovering the diethylene glycol, reduces the equipment floor area and reduces the operation cost. Meanwhile, the diethylene glycol is recovered from the high-concentration diethylene glycol absorption liquid, so that the recovery efficiency of the diethylene glycol is improved.
Specifically, the circulating spray assembly 230 includes a circulating pump 231 and a spray distributor 232, an inlet of the circulating pump 231 is connected to the diethylene glycol concentrated solution tank 220, and the spray distributor 232 is disposed at an outlet end of the circulating pump 231 and located in the spray absorption tower 210. The circulating pump 231 pumps the diethylene glycol absorption liquid in the diethylene glycol concentrated liquid pool 220, and the diethylene glycol absorption liquid is sent into the spray absorption tower 210 and is uniformly sprayed out through the spray distributor 232, so that the absorption efficiency of diethylene glycol is improved.
In one embodiment, the diethylene glycol concentrated solution tank 220 includes a liquid accumulation tank 221, a cooling device 222 and a cooling liquid tank 223, which are sequentially disposed, the liquid accumulation tank 221 is connected to the bottom of the spray absorption tower 210, the cooling device 222 is connected to an outlet end of the liquid accumulation tank 221, the cooling liquid tank 223 is connected to an outlet end of the cooling device 222, and the circulating pump 231 is disposed on the cooling liquid tank 223. The liquid collecting tank 221 is configured to receive the high-temperature liquid from the bottom of the spray absorption tower 210, and send the high-temperature liquid to the cooling liquid tank 222 through a cooling device 222 under the action of a pump. The concentrated solution in the cooling solution tank 222 is supplied to the spray water in the spray absorption tower 210, thereby preventing the water from being wasted due to too high temperature.
In one embodiment, a plurality of contact beds 211 are disposed in the spray absorber tower 210, and the spray distributor 232 is disposed above each contact bed 211. For example, the contact bed layer 211 is composed of at least one of raschig ring, pall ring and ladder ring, so as to increase the contact area, improve the efficiency of absorption and recovery of diethylene glycol and reduce the content of diethylene glycol in the discharged gas phase.
In one embodiment, the contact bed 211 has three layers, wherein the bottom layer is made of ceramic material, and the middle layer and the top layer are filled with modified PP material.
In one embodiment, the feed inlet of the diethylene glycol concentrated solution tank 220 is lower than the liquid phase discharge end at the bottom of the spray absorption tower 210, and the diethylene glycol absorption liquid automatically flows into the diethylene glycol concentrated solution tank 220 under the action of gravity, so that the floor area of equipment is reduced, and the production and operation costs are reduced.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. An apparatus for enriching diethylene glycol from permanent violet kneading wastewater, comprising:
the permanent violet kneading wastewater gasification tower is characterized in that the feed end of the permanent violet kneading wastewater gasification tower is connected with a wastewater feed pipe, and the discharge end of the permanent violet kneading wastewater gasification tower is provided with a steam discharge pipe; and
the diethylene glycol enrichment assembly comprises a spray absorption tower, a diethylene glycol concentrated solution pool and a circulating spray piece, wherein a gas-phase feed end at the bottom of the spray absorption tower is connected with the steam discharge pipe, the diethylene glycol concentrated solution pool is communicated with a liquid-phase discharge end at the bottom of the spray absorption tower, a feed end of the circulating spray piece is connected with the diethylene glycol concentrated solution pool, a discharge end of the circulating spray piece is arranged in the spray absorption tower, the circulating spray piece can convey the diethylene glycol concentrated solution in the diethylene glycol concentrated solution pool into the spray absorption tower, and the diethylene glycol concentrated solution is in reverse contact with the diethylene glycol-containing steam from the steam discharge pipe in the spray absorption tower.
2. The apparatus for enriching diethylene glycol from permanent violet kneading wastewater according to claim 1, wherein the permanent violet kneading wastewater gasification tower is a spray drying tower.
3. The apparatus for enriching diethylene glycol from permanent violet kneading wastewater according to claim 1, wherein the circulating spray assembly comprises a circulating pump and a spray distributor, an inlet of the circulating pump is connected with the diethylene glycol concentrated solution tank, and the spray distributor is arranged at an outlet end of the circulating pump and is positioned in the spray absorption tower.
4. The apparatus for enriching diethylene glycol from permanent violet kneading wastewater according to claim 3, wherein the diethylene glycol concentrated solution tank comprises a solution accumulation tank, a cooling device and a cooling solution tank which are arranged in sequence, the solution accumulation tank is connected with the bottom of the spray absorption tower, the cooling device is connected with the outlet end of the solution accumulation tank, the cooling solution tank is connected with the outlet end of the cooling device, and the circulating pump is arranged on the cooling solution tank.
5. The apparatus for enriching diethylene glycol from permanent violet kneading wastewater according to claim 3, wherein a plurality of contact beds are arranged in the spray absorption tower, and the spray distributor is arranged above each contact bed.
6. The apparatus for enriching diethylene glycol from permanent violet kneading wastewater according to claim 5, wherein the contact bed layer is composed of at least one of Raschig rings, pall rings and cascade rings.
7. The apparatus for enriching diethylene glycol from permanent violet kneading wastewater according to claim 5, wherein the contact bed layer comprises three layers, wherein the bottom layer is made of ceramic material, and the middle layer and the top layer are filled with modified PP material.
8. The apparatus for enriching diethylene glycol from permanent violet kneading wastewater according to claim 1, wherein a feed inlet of the diethylene glycol concentrated solution tank is lower than a bottom liquid phase discharge end of the spray absorption tower.
9. The apparatus for enriching diethylene glycol from permanent violet kneading wastewater according to claim 1, wherein the diethylene glycol concentrated solution tank is connected with the wastewater feeding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021829933.9U CN212864607U (en) | 2020-08-27 | 2020-08-27 | Device for enriching diethylene glycol from permanent violet kneading wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021829933.9U CN212864607U (en) | 2020-08-27 | 2020-08-27 | Device for enriching diethylene glycol from permanent violet kneading wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212864607U true CN212864607U (en) | 2021-04-02 |
Family
ID=75194726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021829933.9U Active CN212864607U (en) | 2020-08-27 | 2020-08-27 | Device for enriching diethylene glycol from permanent violet kneading wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212864607U (en) |
-
2020
- 2020-08-27 CN CN202021829933.9U patent/CN212864607U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109911859B (en) | Working solution for preparing hydrogen peroxide by anthraquinone process and application thereof | |
| CN202080917U (en) | Circulating closed-loop type ammonia nitrogen stripping system | |
| US20200360833A1 (en) | Process and system for heat integration in ethanol production | |
| CN102241422A (en) | Circulating closed ammonia nitrogen stripping system | |
| CN112093835B (en) | Baffling type supergravity concentration equipment | |
| CN106986490A (en) | A kind of recovery processing technique and device of carboxylate industrial production wastewater | |
| CN105692996A (en) | Novel process for treating industrial wastewater with benzyl alcohol | |
| CN201906485U (en) | Gas-liquid separation system | |
| CN108117208A (en) | The processing method and processing unit of a kind of alkali residue waste liquid | |
| CN104860460A (en) | Processing device for aniline intermediate production waste water | |
| CN212864607U (en) | Device for enriching diethylene glycol from permanent violet kneading wastewater | |
| CN111675405A (en) | Method for treating nitrogen heterocyclic ring organic matter wastewater in imidacloprid production | |
| CN109319736B (en) | Ammonia tank purge gas recovery device and process thereof | |
| CN101613166A (en) | Recycling treatment process of high-concentration ammonia nitrogen waste water | |
| CN106219852B (en) | Novel method and device for comprehensively treating benzyl alcohol production wastewater | |
| CN207525007U (en) | A kind of low-concentration ammonia-nitrogen removes equipment | |
| CN214528548U (en) | Resourceful treatment device for high-salt and high-alcohol wastewater in heparin extraction | |
| CN210419813U (en) | Acetonitrile purification device | |
| CN108117209A (en) | The integrated conduct method and device of a kind of alkali residue waste liquid | |
| CN111847481B (en) | Method and device for recycling sodium chloride and diethylene glycol in permanent violet kneading wastewater | |
| CN113087267A (en) | High ammonia nitrogen waste liquid purification process | |
| CN212315563U (en) | Device for recycling sodium chloride and diethylene glycol in permanent violet kneading wastewater | |
| CN111228941A (en) | Tail gas separation device and method in process for electrochemically synthesizing adiponitrile from acrylonitrile | |
| CN213060535U (en) | Permanent purple kneading wastewater treatment device | |
| CN112624479B (en) | Recycling treatment method and device for high-salt high-alcohol wastewater in heparin extraction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |