CN214611645U - Recovery system of phenol and salicylic acid - Google Patents
Recovery system of phenol and salicylic acid Download PDFInfo
- Publication number
- CN214611645U CN214611645U CN202120312353.0U CN202120312353U CN214611645U CN 214611645 U CN214611645 U CN 214611645U CN 202120312353 U CN202120312353 U CN 202120312353U CN 214611645 U CN214611645 U CN 214611645U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- tank
- phenol
- salicylic acid
- desorbent
- 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
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a recovery system of phenol and salicylic acid, which comprises a waste water tank, an adsorption device, a first desorbent tank, a second desorbent tank, a first intermediate tank, a second intermediate tank, a purification water tank and a pipeline; the pipelines comprise a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline; the adsorption device is respectively connected with the waste water tank, the first desorbent tank, the second desorbent tank, the first intermediate tank, the second intermediate tank and the purification water tank through a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline. The recovery system of phenol and salicylic acid adopts step-by-step adsorption, can recover sodium salicylate and sodium phenate step by step, and the recovered sodium salicylate does not need to return to production for carboxylation reaction and is directly converted into a finished product, so that the energy consumption is reduced; and phenol can be recovered independently, and evaporation and concentration are not needed when the phenol is used as a raw material for feeding.
Description
Technical Field
The utility model belongs to the waste water treatment field, concretely relates to recovery system of phenol and salicylic acid.
Background
The salicylic acid wastewater contains salicylic acid products and phenol raw materials, and the prior art adopts resin adsorption technology or extraction technology, and the salicylic acid wastewater is recovered at one time, so that phenol, salicylic acid and the like in the wastewater are converted into mixed sodium salt, and the mixed sodium salt is concentrated and then used for feeding and preparing the salicylic acid.
It has the following significant disadvantages:
(1) the recovered salicylic acid and phenol mixed sodium salt has more impurities, and when the salicylic acid and phenol mixed sodium salt is used for preparing salicylic acid, the yield is low, and the product quality is poor.
(2) Salicylic acid which is generated in the process is converted into sodium salt, and the sodium salt is fed again for reaction, so that resources such as steam, electric power and the like are consumed, the resource waste is caused, and the cost is increased.
Therefore, based on this, propose the utility model discloses technical scheme.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a recovery system of phenol and salicylic acid. The recovery system of phenol and salicylic acid adopts step-by-step adsorption, can recover sodium salicylate and sodium phenate step by step, and the recovered sodium salicylate does not need to return to production for carboxylation reaction and is directly converted into a finished product, so that the energy consumption is reduced; and phenol can be recovered independently, and evaporation and concentration are not needed when the phenol is used as a raw material for feeding.
The utility model adopts the scheme that a recovery system of phenol and salicylic acid is provided, which is characterized by comprising a waste water tank, an adsorption device, a first desorption agent tank, a second desorption agent tank, a first intermediate tank, a second intermediate tank, a purification water tank and a pipeline;
the pipelines comprise a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline;
the adsorption device is respectively connected with the waste water tank, the first desorbent tank, the second desorbent tank, the first intermediate tank, the second intermediate tank and the purification water tank through a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline.
The working principle of the recovery system of phenol and salicylic acid is as follows:
the utility model discloses an adsorption equipment adsorbs phenol and salicylic acid in to waste water to sodium salicylate and sodium phenate are retrieved to the substep, and the sodium salicylate of retrieving returns workshop and sodium salicylate amalgamation in the production, and the sodium phenate of retrieving uses as raw materials for production. Sodium salicylate and phenol were separately recovered as raw materials. The method specifically comprises the following steps:
(1) the wastewater flows out of the wastewater tank to the adsorption device, the salicylic acid and the phenol in the wastewater are adsorbed and remained in the adsorption device at the same time, and the wastewater is purified and enters the purified water tank;
(2) after the adsorption device is adsorbed and saturated, leaching the desorption agent in the first desorption agent tank with the adsorption device to obtain sodium salicylate, and recovering in a first intermediate tank;
(3) eluting the adsorption device by using the desorption agent in the second desorption agent tank, obtaining phenol sodium salt by using an eluent, recovering the phenol sodium salt in the second intermediate tank, and returning the phenol sodium salt to the production as a prediction;
(4) and (4) acidifying the low-concentration sodium phenolate solution recovered in the step (3), performing secondary adsorption, desorbing the resin by using 10% sodium hydroxide solution, recovering the high-concentration sodium phenolate solution, and returning to the production of salicylic acid.
According to actual tests, the concentration of phenol in the wastewater tank is about 0.5 wt.%, and the concentration of salicylic acid in the wastewater tank is about 0.2 wt.%; after adsorption, the phenol concentration was about 0.0005 wt.% and the salicylic acid concentration was about 0.0002 wt.%.
Preferably, the conduit is provided with a fluid drive.
Preferably, the fluid driving device includes a first power pump, a second power pump, a third power pump, a fourth power pump, a fifth power pump and a sixth power pump, which are respectively disposed on the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline and the sixth pipeline.
Preferably, the adsorption device comprises a medium-polarity adsorption resin adsorption column. The resin may be a post-crosslinking resin such as S103G resin, XDA-200 resin, NKA-II resin, etc.
Preferably, the adsorption treatment flow of the adsorption device is 1-5 Bv/h.
Preferably, the first desorbent tank contains an alkaline solution therein.
Preferably, the alkaline solution is sodium hydroxide solution or ammonia water; the sodium hydroxide solution concentration was 0.5 wt.%.
Preferably, the second desorbent tank contains methanol or sodium hydroxide solution.
Preferably, the concentration of the sodium hydroxide solution is 4-10 wt.%.
Preferably, when the desorption agent in the first desorption agent tank flushes the adsorption device, the flow rate is 2-4 Bv/h; when the desorption agent in the second desorption agent tank flushes the adsorption device, the flow rate is 0.5-1 Bv/h.
The utility model has the advantages that:
the phenol and salicylic acid recovery system of the utility model adopts the step-by-step adsorption mode, and the feed liquid can be directly reused after the resolution, thereby greatly saving the production cost; the sodium salicylate and the sodium phenate are recycled step by step, the recycled sodium salicylate does not need to return to production for carboxylation reaction, and is directly converted into a finished product, so that the energy consumption is reduced, and the generation of impurities is reduced; and phenol can be recovered independently, sodium phenolate with the content of more than 30% can be obtained, and when the sodium phenolate is used as a raw material for feeding, evaporation and concentration are not needed, so that the energy consumption is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Figure 1 is the recovery system of phenol and salicylic acid of the utility model.
Figure 2 is the pipeline structure schematic diagram in the recovery system of phenol and salicylic acid of the utility model.
Figure 3 is the power pump structure schematic diagram in the recovery system of phenol and salicylic acid of the utility model.
Reference numbers in the figures:
1-a wastewater tank; 2-an adsorption device; 3-a first desorbent tank; 4-a second desorbent tank; 5-a first intermediate tank; 6-a second intermediate tank; 7-purifying the water tank; 8-pipeline; 9-fluid driving device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Examples
Referring to fig. 1 and 2, the present invention provides a recovery system for phenol and salicylic acid, comprising a waste water tank 1, an adsorption device 2, a first desorbent tank 3, a second desorbent tank 4, a first intermediate tank 5, a second intermediate tank 6, a purified water tank 7 and a pipeline 8;
wherein the pipeline 8 comprises a first pipeline 81, a second pipeline 82, a third pipeline 83, a fourth pipeline 84, a fifth pipeline 85 and a sixth pipeline 86;
the adsorption device 2 is connected with the wastewater tank 1, the first desorbent tank 3, the second desorbent tank 4, the first intermediate tank 5, the second intermediate tank 6 and the purified water tank 7 through a first pipeline 81, a second pipeline 82, a third pipeline 83, a fourth pipeline 84, a fifth pipeline 85 and a sixth pipeline 86 respectively.
As an alternative embodiment, the line 8 is provided with a fluid drive 9.
As an alternative embodiment, referring to fig. 2 and 3, the fluid driving device 9 includes a first power pump 91, a second power pump 92, a third power pump 93, a fourth power pump 94, a fifth power pump 95 and a sixth power pump 96, which are respectively disposed on the first pipeline 81, the second pipeline 82, the third pipeline 83, the fourth pipeline 84, the fifth pipeline 85 and the sixth pipeline 86. Set up the power pump in every pipeline, can change and transport waste water, improve the operating efficiency greatly.
As an alternative embodiment, the adsorption device 2 comprises a middle-polarity adsorption resin adsorption column.
As an optional implementation mode, the adsorption treatment flow rate of the adsorption device 2 is 1-5 Bv/h.
As an alternative embodiment, the first desorbent tank 3 contains an alkaline solution therein.
As an alternative embodiment, the alkaline solution is a sodium hydroxide solution or ammonia water; the sodium hydroxide solution concentration was 0.5 wt.%.
As an alternative embodiment, the second desorbent tank 4 contains methanol or sodium hydroxide solution.
As an alternative embodiment, the sodium hydroxide solution has a concentration of 4 to 10 wt.%.
As an optional embodiment, when the desorption agent in the first desorption agent tank 3 flushes the adsorption device, the flow rate is 2-4 Bv/h; when the desorption agent in the second desorption agent tank 4 washes the adsorption device, the flow rate is 0.5-1 Bv/h.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A recovery system of phenol and salicylic acid is characterized by comprising a waste water tank (1), an adsorption device (2), a first desorbent tank (3), a second desorbent tank (4), a first intermediate tank (5), a second intermediate tank (6), a purified water tank (7) and a pipeline (8);
wherein the pipeline (8) comprises a first pipeline (81), a second pipeline (82), a third pipeline (83), a fourth pipeline (84), a fifth pipeline (85) and a sixth pipeline (86);
the adsorption device (2) is respectively connected with the waste water tank (1), the first desorbent tank (3), the second desorbent tank (4), the first intermediate tank (5), the second intermediate tank (6) and the purification water tank (7) through a first pipeline (81), a second pipeline (82), a third pipeline (83), a fourth pipeline (84), a fifth pipeline (85) and a sixth pipeline (86).
2. A system for the recovery of phenol and salicylic acid according to claim 1 characterised in that the line (8) is provided with fluid driving means (9).
3. A phenol and salicylic acid recovery system according to claim 2, wherein the fluid driving device (9) comprises a first power pump (91), a second power pump (92), a third power pump (93), a fourth power pump (94), a fifth power pump (95) and a sixth power pump (96) respectively arranged on the first pipeline (81), the second pipeline (82), the third pipeline (83), the fourth pipeline (84), the fifth pipeline (85) and the sixth pipeline (86).
4. The phenol and salicylic acid recovery system of claim 1 wherein the adsorption unit (2) comprises a medium polarity adsorption resin adsorption column.
5. The phenol and salicylic acid recovery system of claim 1 wherein the first desorbent tank (3) contains an alkaline solution.
6. The phenol and salicylic acid recovery system of claim 1 wherein the second desorbent tank (4) contains methanol or sodium hydroxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120312353.0U CN214611645U (en) | 2021-02-02 | 2021-02-02 | Recovery system of phenol and salicylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120312353.0U CN214611645U (en) | 2021-02-02 | 2021-02-02 | Recovery system of phenol and salicylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214611645U true CN214611645U (en) | 2021-11-05 |
Family
ID=78440611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120312353.0U Active CN214611645U (en) | 2021-02-02 | 2021-02-02 | Recovery system of phenol and salicylic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214611645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114873804A (en) * | 2022-05-12 | 2022-08-09 | 东南大学 | Salicylic acid production wastewater resource recovery system and method |
| CN115650842A (en) * | 2022-10-25 | 2023-01-31 | 江苏普源化工有限公司 | Production process of circulating dehydration high-purity salicylic acid |
-
2021
- 2021-02-02 CN CN202120312353.0U patent/CN214611645U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114873804A (en) * | 2022-05-12 | 2022-08-09 | 东南大学 | Salicylic acid production wastewater resource recovery system and method |
| CN115650842A (en) * | 2022-10-25 | 2023-01-31 | 江苏普源化工有限公司 | Production process of circulating dehydration high-purity salicylic acid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214611645U (en) | Recovery system of phenol and salicylic acid | |
| CN101735177B (en) | Method for producing propylene oxide | |
| CN102910757B (en) | Treatment technique of waste water generated in production of o-nitrophenol | |
| CN106865860B (en) | Energy recovery type wastewater catalytic wet oxidation treatment device and wastewater treatment method | |
| CN105256150B (en) | A kind of method that rubidium caesium is extracted from acid bittern | |
| CN108015106B (en) | Heavy metal contaminated soil leaching restoration and leaching solution regeneration integrated device and method | |
| CN101838064A (en) | Method for recycling manganese ion in electrolytic manganese production tail end wastewater | |
| CN101134628A (en) | Comprehensive processing utilization method for PTA refining waste-water | |
| CN105174556A (en) | High-acidity high-iron heavy metal wastewater quality-divided resource recycling method | |
| CN109809964A (en) | A method of neopentyl glycol is purified using bipolar membrane electrodialysis system | |
| CN101838065A (en) | Method for recycling hexavalent chromium in electrolytic manganese production tail end wastewater | |
| CN111485247A (en) | Resourceful treatment device and method for high-chlorine organic hazardous waste incineration fly ash | |
| CN203683253U (en) | Recycling treatment device for organic acid wastewater containing heavy metal ion | |
| CN105174577A (en) | Coal chemical wastewater pretreatment process and device | |
| CN108441881B (en) | A kind of method of automatically controlled ion membrane extraction coupling electrolysis method production iodine product | |
| CN102041383B (en) | Method for online saponification and Ca<2+> removal of extracting agent used for rare earth separation | |
| CN212199433U (en) | Resourceful treatment device for incineration fly ash of high-chlorine organic hazardous waste | |
| JP2019125464A (en) | Lithium recovery method | |
| CN105502733A (en) | Method for cooperatively removing and selectively recovering heavy metal cations and non-metal anions from wastewater | |
| CN201053025Y (en) | Modified gold plating waste water reclaiming device | |
| CN102311097B (en) | Method for extracting bromine from seawater by utilization of bipolar membrane | |
| CN101962236B (en) | Process for recovering streptomycin sulphate from waste water by coupling foam separation and ion exchange | |
| CN114573188A (en) | P hydroxybenzoic acid waste water processing system | |
| CN203429005U (en) | Device for recycling catalysts and process water from PTA (Pure Terephthalic Acid) refined mother solution | |
| CN104743694A (en) | Recycling processing method and device of heavy metal ion-containing organic acid wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |