CN112403533B - Purification process and purification equipment for anion exchange resin - Google Patents
Purification process and purification equipment for anion exchange resin Download PDFInfo
- Publication number
- CN112403533B CN112403533B CN202011230608.5A CN202011230608A CN112403533B CN 112403533 B CN112403533 B CN 112403533B CN 202011230608 A CN202011230608 A CN 202011230608A CN 112403533 B CN112403533 B CN 112403533B
- Authority
- CN
- China
- Prior art keywords
- purification
- anion exchange
- exchange resin
- tank
- pipe
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/08—Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/12—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/10—Ion-exchange processes in general; Apparatus therefor with moving ion-exchange material; with ion-exchange material in suspension or in fluidised-bed form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/14—Controlling or regulating
Abstract
The invention discloses a purification process and purification equipment of anion exchange resin, wherein the purification process comprises the following steps: circularly washing the anion exchange resin by using sodium chloride aqueous solution to obtain chloridized anion exchange resin; circularly washing the chlorinated anion resin by using an alkaline aqueous solution, then carrying out air washing on the washed chlorinated anion resin by using purification equipment, and obtaining a primary anion exchange resin; the invention overcomes the defects of the prior art, can effectively remove macromolecules and anions in the anion exchange resin, can be completed in purification equipment at one time, does not need to replace devices, saves equipment and simplifies the purification operation process.
Description
Technical Field
The invention relates to the technical field of anion exchange resin purification, and in particular belongs to a purification process and purification equipment of anion exchange resin.
Background
The ion exchange process (ion exchange process) is a reversible chemical reaction between ions in the liquid phase and ions in the solid phase, and when some ions in the liquid phase are favored over ion exchange solids, they are adsorbed by the ion exchange solids, so that the ion exchange solids must release equivalent ions back into solution in order to maintain the electrical neutrality of the aqueous solution. Anion exchange resins are generally porous or particulate in size from about 0.1 to about 1mm and their ion exchange capacity is characterised by their exchange capacity: strong base anion exchange resins, weak base anion exchange resins, and adsorption of anions. When the hydroxyl anion resin contacts with water to generate ion exchange reaction, various anions in the water are adsorbed, and the water only contains one hydroxyl ion. The various anions and organic molecules adsorbed can remain on or in the anion resin to gradually weaken the anion exchange capacity, and the anion exchange resin needs to be purified at this time to remove impurities so as to improve the adsorption capacity.
Disclosure of Invention
The invention aims to provide a purification process and purification equipment of anion exchange resin, which overcome the defects of the prior art.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a process for purifying an anion exchange resin comprising the steps of:
s1, circularly flushing anion exchange resin by using sodium chloride aqueous solution to obtain chloridized anion exchange resin;
s2, circularly washing the chlorinated anion resin by using an alkaline aqueous solution, then carrying out air washing on the washed chlorinated anion resin by using purification equipment, and then obtaining a primary anion exchange resin;
and S3, washing the primary anion exchange resin by using sodium sulfite solution, and then washing by using desalted water to obtain the purified anion exchange resin.
Wherein the alkaline aqueous solution comprises sodium hydroxide, water, sodium salicylate and sodium chloride.
Wherein the air washing comprises alternately performing steam washing and organic solvent steam washing, wherein the organic solvent comprises ethylenediamine and ethanol, the air washing pressure is 2-3Mpa, and the temperature is 70-90 ℃.
Wherein the steam washing uses steam containing ozone.
The purification equipment for anion exchange resin purification technology comprises a purification tank and a flushing tank, wherein the purification tank is provided with a feed inlet and a discharge outlet, the feed inlet is positioned at the top of the purification tank, the discharge outlet is positioned at the lower part of the purification tank, the bottom of the purification tank is also provided with a discharge outlet, the flushing tank is arranged in the purification tank, the top of the flushing tank is connected with the feed inlet, the bottom of the flushing tank is connected with the discharge outlet, the flushing tank is not contacted with the purification tank, the flushing tank is a tank body with a plurality of through holes on the surface, the feed inlet and the discharge outlet are provided with sealing flanges, rubber plugs are arranged in the feed inlet and the discharge outlet, the top of the purification tank is provided with a first feed pipe, the left side of the purification tank is provided with a second feed pipe, the inside of the flushing tank is provided with a purification device, and the purification device is communicated with the first feed pipe and the second feed pipe.
The purification device comprises a main pipe and a plurality of branch pipes arranged on the main pipe, the main pipe is vertically arranged in the middle of the flushing tank, the bottom of the main pipe is closed, the top of the main pipe is communicated with a first feeding pipe and a second feeding pipe, the branch pipes are arranged on the main pipe in a divergent mode and are communicated with the main pipe, and a plurality of upward jet ports with openings are arranged on the branch pipes.
The jet orifice is circular, and the middle part of the jet orifice is provided with a dividing part which is integrated with the branch pipe into a whole structure and divides the jet orifice into at least two parts.
The side surface of the dividing part is of an inclined structure, and the side surface of the dividing part is inclined in a divergent manner outwards from the inside of the branch pipe.
Compared with the prior art, the invention has the following implementation effects:
1. the sodium salicylate and the sodium hydroxide are used together, so that in the process of replacing ions in the anion exchange resin, salicylate can be complexed and combined with macromolecules combined in the pore channels of the anion exchange resin, and under the flushing action of an alkaline aqueous solution, the macromolecules complexed with salicylate are taken away, so that part of macromolecules and part of ions in the anion exchange resin are taken away from the pore channels of the anion exchange resin.
2. According to the invention, air washing is carried out by using purification equipment, water vapor is flushed into pore channels of anion exchange resin through temperature and pressure, residual and adsorbed ions and macromolecules in the anion exchange resin are removed, and the solubility of soluble matters is increased through high temperature and high pressure.
3. The purification equipment can wash and air-wash the anion exchange resin in the washing tank, can realize one tank with multiple purposes, can finish the purification of the anion exchange resin in the tank at one time, does not need to replace a device, saves equipment and simplifies the purification operation.
4. When high-pressure steam is introduced into the main pipe, the dividing parts on the branch pipes are inclined in a divergent manner, so that jet ports of the branch pipes can upwards form jet flows, the impact effect on the anion resin can be achieved, and the anion exchange resin can be suspended and stirred under the simultaneous jet effect of a plurality of branch pipes on the main pipe, so that each direction of the anion exchange resin can be cleaned and purified under the jet effect, and the purification efficiency and effect are effectively improved.
Drawings
FIG. 1 is a schematic view of the structure of the inside of a purifying apparatus;
FIG. 2 is a schematic structural view of a branch pipe;
fig. 3 is a sectional view at the ejection port.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific direction to construct and operate in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
As shown in fig. 1 to 3, the purification equipment for the anion exchange resin purification process comprises a purification tank 1 and a flushing tank 7, wherein a feed inlet 11 and a discharge outlet 12 are arranged on the purification tank 1, sealing flanges 10 are arranged on the feed inlet 11 and the discharge outlet 12, rubber plugs are arranged in the feed inlet 11 and the discharge outlet 12, and the feed inlet 11 and the discharge outlet 12 are sealed.
The charge door 11 is located the top of purification jar 1, the discharge gate 12 is located the lower part of purification jar 1, the bottom of purification jar 1 still is equipped with bin outlet 15, wash tank 7 installs in the inside of purification jar 1, and the top of wash tank 7 is connected with charge door 11, the bottom is connected with discharge gate 12, wash tank 7 does not contact with purification jar 1, wash tank 7 is the jar body that the surface is equipped with a plurality of through-hole, the top of purification jar 1 is equipped with first inlet pipe 13, the left side of purification jar 1 is equipped with second inlet pipe 14, the internally mounted of wash tank 7 has purification device.
The purification device comprises a main pipe 8 and a plurality of branch pipes 9 arranged on the main pipe 8, the main pipe 8 is vertically arranged in the middle of the flushing tank 7, the bottom of the main pipe 8 is closed, the top is communicated with a first feeding pipe 13 and a second feeding pipe 14, the branch pipes 9 are arranged on the main pipe 8 in a divergent mode and are communicated with the main pipe 8, a plurality of jet ports 91 with upward openings are arranged on the branch pipes 9, the jet ports 91 are circular, the middle of the jet ports 91 is provided with a dividing part 92 which is integrated with the branch pipes 9, the jet ports 91 are divided into two parts, the side faces of the dividing part 92 are of an inclined structure, and the inside of each branch pipe 9 is inclined in a divergent mode outwards.
The organic content in the anion exchange resin before purification is 2240mg/L. When the purification equipment is used for purifying the anion exchange resin, firstly, 6wt% of sodium chloride aqueous solution enters a main pipe 8 from a second feeding pipe 14, a first feeding pipe 13 is closed, the anion exchange resin is circularly washed by the sodium chloride aqueous solution, the washed sodium chloride aqueous solution flows from between a purification tank 1 and a washing tank 7 to a discharge hole 15 at the bottom of the purification tank 1, flows out from the discharge hole 15 and is circularly washed for 20min, and the chlorinated anion exchange resin is obtained;
the first feed pipe 13 was then continued to be used to circularly wash the chlorinated anion resin with an alkaline aqueous solution containing 3wt% of sodium hydroxide, 1.2wt% of sodium salicylate and 0.6wt% of sodium chloride, and then the first feed pipe 13 was closed, and the washed chlorinated anion resin was subjected to gas washing by the second feed pipe 14, the gas washing comprising alternately water vapor washing and organic solvent vapor washing, wherein water vapor washing uses water vapor containing 4wt% of ozone, the organic solvent vapor is ethanol containing 8wt% of ethylenediamine, the pressure of the gas washing is 3.0Mpa, the temperature is 80 ℃, and then the primary anion exchange resin was obtained.
Finally, the second feed pipe 14 was closed, the first feed pipe 13 was used, the primary anion exchange resin was rinsed with a 2.7wt% sodium sulfite solution to remove residual ozone and other oxidative substances from the anion exchange resin, and then rinsed with desalted water to obtain a purified anion exchange resin.
60mL of anion exchange resin purified by the method is taken, and the content of organic matters in the anion exchange resin is only 370mg/L through detection.
Comparative example 1
The difference with the examples is that the alkali liquor does not contain sodium salicylate, 60mL of purified anion exchange resin is taken, and the organic matter content in the anion exchange resin is only 1360mg/L.
Comparative example 2
The difference from the examples is that the water vapor contains no ozone, 60mL of purified anion exchange resin is taken, and the organic matter content in the anion exchange resin is detected to be 1120mg/L only.
Comparative example 3
The difference from the examples is that the organic solvent vapor does not contain ethylenediamine, 60mL of purified anion exchange resin is taken, and the organic content of the anion exchange resin is detected to be 980mg/L.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A process for purifying anion exchange resin is characterized in that,
firstly, 6wt% of sodium chloride aqueous solution enters a main pipe from a second feeding pipe, the first feeding pipe is closed, the anion exchange resin is circularly washed by the sodium chloride aqueous solution, the washed sodium chloride aqueous solution flows from between a purification tank and a washing tank to a discharge port at the bottom of the purification tank, and flows out from the discharge port, and the anion exchange resin chloride is obtained after the circulating washing for 20 min;
then continuously using a first feeding pipe to circularly wash the chlorinated anion resin by using an alkaline aqueous solution containing 3 weight percent of sodium hydroxide, 1.2 weight percent of sodium salicylate and 0.6 weight percent of sodium chloride, then closing the first feeding pipe, and performing air washing on the washed chlorinated anion resin by using a second feeding pipe, wherein the air washing comprises alternately performing water vapor washing and organic solvent vapor washing, wherein the water vapor washing uses water vapor containing 4 weight percent of ozone, the organic solvent vapor is ethanol containing 8 weight percent of ethylenediamine, the air washing pressure is 3.0MPa, the temperature is 80 ℃, and then obtaining the first-stage anion exchange resin;
finally, the second feed pipe is closed, the first feed pipe is used, the primary anion exchange resin is washed by using 2.7wt% of sodium sulfite solution, residual ozone and other oxidizing substances in the anion exchange resin are removed, and then the purified anion exchange resin is obtained by washing by using desalted water.
2. The purification equipment for the anion exchange resin purification process of claim 1, which is characterized by comprising a purification tank and a flushing tank, wherein the purification tank is provided with a feed inlet and a discharge outlet, the feed inlet is positioned at the top of the purification tank, the discharge outlet is positioned at the lower part of the purification tank, the bottom of the purification tank is also provided with a discharge outlet, the flushing tank is arranged in the purification tank, the top of the flushing tank is connected with the feed inlet, the bottom of the flushing tank is connected with the discharge outlet, the flushing tank is not contacted with the purification tank, the flushing tank is a tank body with a plurality of through holes on the surface, sealing flanges are arranged on the feed inlet and the discharge outlet, rubber plugs are arranged in the feed inlet and the discharge outlet, the top of the purification tank is provided with a first feed pipe, the left side of the purification tank is provided with a second feed pipe, the purification device is arranged in the flushing tank, and the purification device is communicated with the first feed pipe and the second feed pipe;
the purification device comprises a main pipe and a plurality of branch pipes arranged on the main pipe, the main pipe is vertically arranged in the middle of the flushing tank, the bottom of the main pipe is closed, the top of the main pipe is communicated with a first feeding pipe and a second feeding pipe, the branch pipes are arranged on the main pipe in a divergent mode and are communicated with the main pipe, and a plurality of upward jet ports with openings are arranged on the branch pipes.
3. The purifying apparatus according to claim 2, wherein the injection port is circular, and a dividing portion integrally formed with the branch pipe is provided in a middle portion of the injection port to divide the injection port into at least two parts.
4. A purification apparatus according to claim 3, wherein the side surfaces of the dividing portions are inclined structures and divergently inclined from the inside of the branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230608.5A CN112403533B (en) | 2020-11-06 | 2020-11-06 | Purification process and purification equipment for anion exchange resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230608.5A CN112403533B (en) | 2020-11-06 | 2020-11-06 | Purification process and purification equipment for anion exchange resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112403533A CN112403533A (en) | 2021-02-26 |
| CN112403533B true CN112403533B (en) | 2023-07-21 |
Family
ID=74781977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011230608.5A Active CN112403533B (en) | 2020-11-06 | 2020-11-06 | Purification process and purification equipment for anion exchange resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112403533B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115739206A (en) * | 2022-11-27 | 2023-03-07 | 王志国 | Ion exchange column |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017040587A (en) * | 2015-08-20 | 2017-02-23 | 東ソー株式会社 | Ion chromatography separation column using filler comprising amphoteric ion type functional group and filler comprising positive ion exchange group and analysis method thereof |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191644A (en) * | 1978-05-11 | 1980-03-04 | Belco Pollution Control Corporation | Regeneration of mixed resin bed used for condensate polishing |
| JP4292366B2 (en) * | 2001-12-06 | 2009-07-08 | オルガノ株式会社 | Anion exchanger regeneration method and anion exchanger regeneration agent |
| US7776296B2 (en) * | 2006-03-10 | 2010-08-17 | Cansolv Technologies Inc. | Regeneration of ion exchangers that are used for salt removal from acid gas capture plants |
| CN102658217B (en) * | 2012-05-08 | 2014-02-05 | 哈尔滨工业大学 | Method for recovering anion exchange resin polluted by organic matters and recovery medicine |
| CN104788599B (en) * | 2015-03-27 | 2018-03-30 | 徐州浩通新材料科技股份有限公司 | A kind of preparation method of macroporous weakly basic anion exchange resin |
| CN104907108A (en) * | 2015-05-26 | 2015-09-16 | 安徽皖东树脂科技有限公司 | Pretreatment method of anion exchange resin |
| GB2558552A (en) * | 2017-01-03 | 2018-07-18 | Ionex Sg Ltd | Method for regenerating ion exchange material |
| CN108178240B (en) * | 2018-01-16 | 2020-10-27 | 中国神华能源股份有限公司 | Method for regenerating desalting mixed bed |
| CN110564897B (en) * | 2019-08-06 | 2022-03-29 | 四川雅华生物有限公司 | Recovery method and system for ion exchange column in xylose preparation |
| CN111804242A (en) * | 2020-07-15 | 2020-10-23 | 浙江嘉化新材料有限公司 | Air injection device capable of adjusting gas-liquid contact mode |
| CN111871402A (en) * | 2020-07-28 | 2020-11-03 | 宋安宁 | Sustainable cyclic utilization active carbon regeneration system and active carbon regeneration equipment |
-
2020
- 2020-11-06 CN CN202011230608.5A patent/CN112403533B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017040587A (en) * | 2015-08-20 | 2017-02-23 | 東ソー株式会社 | Ion chromatography separation column using filler comprising amphoteric ion type functional group and filler comprising positive ion exchange group and analysis method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112403533A (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112403533B (en) | Purification process and purification equipment for anion exchange resin | |
| CN106082413B (en) | Ferrate online synthesis and organic matter degradation equipment and process | |
| CN102688694B (en) | On-line back washing process system of porous ceramic film | |
| JP5849419B2 (en) | Pure water production equipment | |
| CN105016550B (en) | A kind of portable emergency water treatment facilities and handling process | |
| CN107804925B (en) | Chlor-alkali brine purification device and purification process thereof | |
| CN111807394B (en) | Method for removing organic matters from Bayer process mother liquor | |
| CN106676572B (en) | The extracting method and device of black liquid rugose wood element based on woodceramics electrode | |
| CN109453670A (en) | A kind of electrodialysis membrane stack cleaning method | |
| CN213790990U (en) | Cleaning device for washing filter membrane | |
| CN215161212U (en) | Water treatment equipment for boiler | |
| CN213506262U (en) | Ultrafiltration raffinate recycle system | |
| CN202460484U (en) | Easily-assembled integrated enhanced-type external-pressure hollow fiber membrane assembly | |
| CN110975404B (en) | Pretreatment method and system for separation of filtrate components in polyphenylene sulfide production | |
| CN211514096U (en) | Hollow fiber membrane device for beer filtration | |
| CN210945083U (en) | Ceramic membrane sewage treatment system convenient to regenerate | |
| CN209221885U (en) | A kind of organic tubular type membranous system for refined brine technique | |
| CN214183047U (en) | System for catalyst separation in cyclohexanone ammoximation process | |
| CN220609703U (en) | Material recycling device of waste gas system of ethylene carbonate device | |
| CN217809692U (en) | Horizontal and vertical integrated hydrogen purification equipment and hydrogen production system | |
| CN215712340U (en) | Integrated treatment device for alkali recovery | |
| CN110713300A (en) | Wastewater reduction mixed salt treatment process | |
| CN214020130U (en) | Reverse osmosis membrane separation device for producing stevioside | |
| CN109133112A (en) | A kind of technique and device of organic tubular membrane refined brine | |
| CN216418511U (en) | Slurry circulating filter device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |