CN1844460A - Device for electrochemical removal of heat stable salts in desulfurated amine liquid - Google Patents
Device for electrochemical removal of heat stable salts in desulfurated amine liquid Download PDFInfo
- Publication number
- CN1844460A CN1844460A CN200610059307.4A CN200610059307A CN1844460A CN 1844460 A CN1844460 A CN 1844460A CN 200610059307 A CN200610059307 A CN 200610059307A CN 1844460 A CN1844460 A CN 1844460A
- Authority
- CN
- China
- Prior art keywords
- anode
- cathode
- chamber
- room
- ion exchange
- 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.)
- Granted
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
This invention relates to the thermally-stabilized salt electrochemical removing device in desulfurizing thiamines liquid. This invention provides an electric dialysis-ion-exchange electrochemical device which only uses electrolytic water; this invention can remove thermally-stabilized salt in desulfurizing thiamines liquid to make the thiamines liquid rebirth. This invention is arranged with anode room, cathode room, iron exchange room and constant-current source, wherein the space between the anode room and iron exchange room is nipped with highly basic anode iron exchange resin film, and the space between the iron exchange room and anode room is also nipped with highly basic anode iron exchange resin film, and the iron exchanged room is filled with highly basic anode iron exchange resin film, the anode room and cathode room are installed with anode and cathode respectively, and both the cathode and anode are corroding-resistance metal electrode with multi-holes, the cathode and anode connect with the constant-current source, the cathode room is arranged with water inlet and waste liquid outlet; the anode room is also arranged with water inlet and waster liquid outlet; the iron exchange room is arranged with thiamines liquid inlet and outlet.
Description
Technical Field
The invention relates to an electrochemical device, in particular to an electrochemical device for removing heat stable salt in a desulfurization amine liquid.
Background
Amine liquid desulfurization is a common method in the petroleum and natural gas industry. In the desulfurization process of the amine liquid, due to degradation and other reasons, generation and accumulation of Heat Stable Salt (HSS for short) are caused, so that serious consequences such as amine liquid foaming, reduction of amine liquid desulfurization efficiency, reduction of filter life, equipment corrosion and the like are caused, and serious economic loss is caused.
In the law Reid Gas Conditioning Conference, Daria journal, Peter Davy proposed the use of ion exchange method to remove the Heat Stable salt in the Amine liquid (called Amipure method for short, Daria journal, Peter Davy. Impactor linkage Removal of Heat Stable stage salt on Amine Plant operation of course Reid Gas Conditioning Conference. february27-March 1, 2000, Norman, Oklama.) the principle of this method is that the Amine liquid containing Heat Stable salt flows through the anion exchange resin column, the Heat Stable salt is retained on the resin column by ion exchange, and the Amine liquid is purified; then, alkali liquor (NaOH or KOH solution) with proper concentration is used for passing through the ion exchange column to remove the heat stable salt adsorbed on the resin column, and the resin column is regenerated. The device needs a large amount of alkali liquor to regenerate the ion exchange resin, and consumes a large amount of chemical reagents; the alkali liquor is added while metal cations (Na) are introduced+Or K+) The amine liquid system becomes complex, the corrosion of the system is aggravated, a cation exchange system needs to be additionally installed for removal, and waste is caused. In addition, in the intermittent operation of work and regeneration, oxygen is difficult to avoid entering amine liquid through alkali liquor, so that the amine liquid is oxidized and degraded again to deteriorate.
Suqin Heyu et al (Suqin Heyu, Liudan et al, electrodialysis for the study of regeneration of flue gas desulfurization absorbent, water treatment technology, 2003, 29 (4): 230-232) propose to utilize electrodialysis equipment to remove heat stable salt, the electrodialysis equipment is designed to be a four-compartment structure, each group of repeating units comprises a reflux chamber and a product chamber,the material chamber, the acid chamber and each compartment are separated by an anion exchange membrane or a cation exchange membrane. Under the action of a direct current electric field, ions permeate the selective ion exchange membrane to generate directional migration, so that the effect of removing the thermal stable salt is achieved. The method removes only one kind of ion (SO)4 2-) Acid is also needed to be added as a carrier of the absorption liquid, secondary pollution is caused, deep desalination cannot be thoroughly performed, cations in the absorption liquid are easy to lose, the structure of electrodialysis equipment is complex, and the cost is high.
Disclosure of Invention
The invention aims to overcome the defects of large consumption of chemical reagents, secondary pollution, secondary oxidative degradation and the like when the heat stable salt of the desulfurized amine liquid is removed by adopting an ion exchange method, and provides an electrodialysis-ion exchange electrochemical device which only adopts electrolyzed water and does not need other chemical reagents.
The invention adopts a technical scheme of combining an electrochemical principle with an ion exchange technology.
The invention is provided with an anode chamber, a cathode chamber, an ion exchange chamber and a constant current source, wherein a strong alkali type anion exchange resin membrane is clamped between the anode chamber and the ion exchange chamber, a strong alkali type anion exchange resin membrane is also clamped between the ion exchange chamber and the cathode chamber, the strong alkali type anion exchange resin is filled in the ion exchange chamber, the anode chamber and the cathode chamber are respectively provided with an anode and a cathode, the anode and the cathode are both porous corrosion-resistant metal electrodes, the aperture is 50-200 mu m, preferably 100 mu m, an electrolyte flow channel, a charge transmission channel and a gas discharge flow path can be provided, the anode and the cathode are connected with the constant current source, and the cathode chamber is provided with a water inlet and a waste liquid outlet; the anode chamber is also provided with a water inlet and a waste liquid outlet; the ion exchange chamber is provided with an amine liquid inlet and an amine liquid outlet.
The anode chamber and the cathode chamber can be designed into a groove-shaped electrode chamber, and the length, width and thickness of the anodeand the cathode are the same as those of the groove-shaped electrode chamber. The cross section of the ion exchange chamber is designed into a streamline ellipse.
The anode and cathode are preferably platinum electrodes or platinized electrodes.
Compared with the prior technical scheme for removing the heat stable salt in the desulfurization amine liquid by adopting an ion exchange method, the method has the following outstanding advantages and effects:
1. the invention adopts the electrolyzed water to generate regenerated ions, only consumes electric energy, does not need any other chemical reagent, is clean and has no pollution;
2. the generated regenerated ions are OH during water electrolysis-Without introduction of metal cations Na causing secondary pollution+Or K+The cation exchange device is not required to be additionally installed, so that the cost is greatly reduced;
3. the whole device can be continuously regenerated, and intermittent operation is avoided.
Drawings
Fig. 1 is a schematic structural cross-sectional view according to an embodiment of the present invention.
FIG. 2 is a process flow diagram of an embodiment of the present invention.
Detailed Description
The following examples will further illustrate the present invention with reference to the accompanying drawings.
As shown in figure 1, the invention is composed of a cathode chamber 1, a cathode 6, an anode chamber 2, an anode 9, an ion exchange chamber 3 and a constant current source 5, wherein the anode chamber 2 and the cathode chamber 1 are both designed to be a tank-shaped electrode chamber, the anode 9 and the cathode 6 are respectively embedded in the anode chamber 2 and the cathode chamber 1, the anode 9 and the cathode 6 adopt porous corrosion-resistant metal electrodes, such as platinum electrodes or platinum-plated electrodes, the length, width and thickness of the porous corrosion-resistant metal electrodes are the same as those of the tank-shaped electrode chamber, the pore diameter of the porous corrosion-resistant metal electrodes is 50-200 μm, preferably 100 μm, and a lead 4 connecting the two electrodes of the anode 9 and the cathode 6 is led out from the upper parts of the cathode. The cathode chamber 1 is provided with a water inlet 7 and a waste liquid outlet 8. The anode chamber 2 is provided with a water inlet 10 and a waste liquid outlet 11. The cross section of the ion exchange chamber 3 is a streamline ellipse, and the ion exchange chamber 3 is filled with strong alkali type anion exchange resin 12. Strong alkali type anion exchange membranes 13 and 13' are arranged on two sides of the ion exchange chamber 3, and an amine liquid inlet 14 and an amine liquid outlet 15 are arranged on the ion exchange chamber 3.
The working principle and working process of the present invention are given below.
Referring to FIG. 2, an amine solution containing a certain amount of heat stable salt is pumped from an amine solution tank 16 by a circulating pump 17, passes through a flow meter 18, and flows from top to bottom through an ion exchange chamber of an electrochemical removal device 19 for removing heat stable salt in the desulfurization amine solution, wherein anions in the heat stable salt are connected with OH on anion exchange resin-The exchange is absorbed on anion exchange resin, the heat stable salt in the amine liquid is removed, the purified amine liquid directly flows into the regenerated amine liquid tank 23 from the amine liquid outlet, and the reaction formula is as follows:
wherein R is a fixed group in the strong base type anion exchange resin, A-Is a heat stable salt anion (HSS), MDEAH+MDEA is N-methyldiethanolamine as the tethered amine, i.e., the free amine.
In the above operation, the purified water in the water tower 20 is pumped by the circulating pump 21, and passes through the flow meter 22 to the cathode of the electrochemical device 19 for removing heat stable salts from the desulfurized amine liquid according to the present invention for electrolysis, and the generated electrode reaction formula is:
cathode:
OH produced by electrolysis-Under the action of DC electric field, the ion exchange resin can selectively permeate anion exchange membrane to ion exchange chamber to regenerate ineffective anion exchange resin, and the reaction is:
exchanged heat stable salt anion A-Under the action of DC electric field, the water selectively passes through the anion exchange membrane to the anode chamber and is electrolyzed by the anode to generate H+Bound as HA and discharged as waste to the waste tank 24, the reaction formula is:
anode:
Claims (6)
1. an electrochemical removal device for heat stable salt in desulfurized amine solution is characterized by being provided with an anode chamber, a cathode chamber, an ion exchange chamber and a constant current source, wherein a strong alkali type anion exchange resin membrane is clamped between the anode chamber and the ion exchange chamber, a strong alkali type anion exchange resin membrane is also clamped between the ion exchange chamber and the cathode chamber, the strong alkali type anion exchange resin is filled in the ion exchange chamber, the anode chamber and the cathode chamber are respectively provided with an anode and a cathode, the anode and the cathode are both porous corrosion-resistant metal electrodes, the anode and the cathode are connected with the constant current source, and the cathode chamber is provided with a water inlet and a waste liquid outlet; the anode chamber is also provided with a water inlet and a waste liquid outlet; the ion exchange chamber is provided with an amine liquid inlet and an amine liquid outlet.
2. The device for electrochemically removing heat-stable salts from desulfurized amine according to claim 1, wherein said porous corrosion-resistant metal electrode has a pore size of 50 to 200 μm.
3. The apparatus for electrochemically removing heat-stable salts from desulfurized amine according to claim 2, wherein said porous corrosion-resistant metal electrode has a pore size of 100 μm.
4. The apparatus for electrochemically removing heat-stable salts from desulfurized amine according to claim 1, wherein said anode and said cathode are platinum electrodes or platinized electrodes.
5. The apparatus for electrochemically removing heat-stable salts from desulfurized amine solution according to claim 1 wherein said anode compartment and said cathode compartment are both trough-shaped electrode compartments, and said anode and said cathode have the same length, width and thickness dimensions as said trough-shaped electrode compartments.
6. The apparatus for electrochemically removing heat-stable salts from a desulfurized amine according to claim 1, wherein said ion exchange chamber has a cross-section of a streamlined oval shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100593074A CN1844460B (en) | 2006-03-02 | 2006-03-02 | Device for electrochemical removal of heat stable salts in desulfurated amine liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100593074A CN1844460B (en) | 2006-03-02 | 2006-03-02 | Device for electrochemical removal of heat stable salts in desulfurated amine liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1844460A true CN1844460A (en) | 2006-10-11 |
| CN1844460B CN1844460B (en) | 2010-08-11 |
Family
ID=37063429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100593074A Expired - Fee Related CN1844460B (en) | 2006-03-02 | 2006-03-02 | Device for electrochemical removal of heat stable salts in desulfurated amine liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1844460B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406025A (en) * | 2013-08-28 | 2013-11-27 | 中国石油化工股份有限公司 | Technology for continuously removing heat steady salts from alcohol amine desulfurization solution by using double-membrane reactor-magnetic electrodialysis method |
| CN105948188A (en) * | 2016-06-29 | 2016-09-21 | 太原理工大学 | Continuous electric-control ionic separation device and process |
| CN108176233A (en) * | 2018-03-01 | 2018-06-19 | 天津城建大学 | Novel three Room electrodialysis desalination device |
| CN108218138A (en) * | 2018-03-01 | 2018-06-29 | 天津城建大学 | The waste water resource retracting device of electrodialysis coupled biological processing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1003142B (en) * | 1985-04-01 | 1989-01-25 | 厦门大学 | Ion chromatographic inhibitory column |
| CN1170158C (en) * | 2002-09-03 | 2004-10-06 | 厦门大学 | Electrochemical ion chromatographic eliminator with integral electrode and electrolyte liquor chamber |
| CN100333823C (en) * | 2004-08-03 | 2007-08-29 | 中国石化镇海炼油化工股份有限公司 | Method for purifying deterioration amine liquid using highly basic anion exchange resin |
-
2006
- 2006-03-02 CN CN2006100593074A patent/CN1844460B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406025A (en) * | 2013-08-28 | 2013-11-27 | 中国石油化工股份有限公司 | Technology for continuously removing heat steady salts from alcohol amine desulfurization solution by using double-membrane reactor-magnetic electrodialysis method |
| CN103406025B (en) * | 2013-08-28 | 2016-11-09 | 中国石油化工股份有限公司 | A kind of double membrane stack-magnetoelectricity dialysis is utilized to remove the device of heat stable salts in amine desulphurization solvent continuously |
| CN105948188A (en) * | 2016-06-29 | 2016-09-21 | 太原理工大学 | Continuous electric-control ionic separation device and process |
| CN105948188B (en) * | 2016-06-29 | 2018-12-18 | 太原理工大学 | A kind of continuously automatically controlled ion fractionation device and technique |
| CN108176233A (en) * | 2018-03-01 | 2018-06-19 | 天津城建大学 | Novel three Room electrodialysis desalination device |
| CN108218138A (en) * | 2018-03-01 | 2018-06-29 | 天津城建大学 | The waste water resource retracting device of electrodialysis coupled biological processing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1844460B (en) | 2010-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3727375A (en) | Continuous electromigration process for removal of gaseous contaminants from the atmosphere and apparatus | |
| CN103183403B (en) | Antibiotic pharmaceutical wastewater processing method and device | |
| CN106044965B (en) | Device and method for recovering heavy metals in electroplating wastewater | |
| CN105154908B (en) | Bipolar Membrane method reclaims lithium hydroxide technique from solution | |
| CN101891331B (en) | Integrated treatment device for active carbon adsorption and electrochemical regeneration and use method thereof | |
| Chen et al. | Removal of heat stable salts from N-methyldiethanolamine wastewater by anion exchange resin coupled three-compartment electrodialysis | |
| CN104524942B (en) | The method and apparatus that the collaborative liquid phase of electrodialysis purifies industrial SO 2 waste gas | |
| CN1844460A (en) | Device for electrochemical removal of heat stable salts in desulfurated amine liquid | |
| Zhou et al. | Removal of heat-stable salts from lean amine solution using bipolar membrane electrodialysis | |
| CN201614411U (en) | Printed-board acid etching waste liquid regenerating and copper recycling device | |
| CN113087263B (en) | Zero release sewage treatment system | |
| CN212669467U (en) | Catalytic cracking wet flue gas desulfurization waste water cyclic utilization system | |
| CN113457451A (en) | Method for regenerating carbon capture absorbent morpholine by bipolar membrane electrodialysis | |
| CN201880432U (en) | Device for removing heat-stable salt in desulfurization amine liquid by membrane method | |
| CN106045143A (en) | Ternary water, polymeric water or fracturing water treatment equipment and technological method | |
| CN105481150A (en) | Treatment equipment for wastewater containing heavy metal | |
| CN207002348U (en) | A kind of electrode structure of capacitor deionizing instrument | |
| CN205740601U (en) | Ternary water, polymer water or frac water processing equipment | |
| CN110038440A (en) | A kind of bipolar membrane electrodialysis device and method for seawater decalcification | |
| CN105060575B (en) | A kind of anti-electrodialysis of coupling and electrodialytic method for desalting seawater | |
| CN212151922U (en) | System for utilize electrodialysis utilization strong brine | |
| JP2023537291A (en) | Methods for binding, transporting, activating, transforming, storing and releasing water-soluble gases | |
| JP4662277B2 (en) | Electrodeionization equipment | |
| CN204251577U (en) | A kind of gas dehydration triethylene glycol. solution reactivating device | |
| CN220867237U (en) | Amine liquid purifying system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20130302 |