CN215975348U - Solvent purification electrodialysis processing system - Google Patents
Solvent purification electrodialysis processing system Download PDFInfo
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- CN215975348U CN215975348U CN202122346081.9U CN202122346081U CN215975348U CN 215975348 U CN215975348 U CN 215975348U CN 202122346081 U CN202122346081 U CN 202122346081U CN 215975348 U CN215975348 U CN 215975348U
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Abstract
The utility model belongs to the technical field of solvent treatment equipment of a solvent regeneration system, and particularly relates to a solvent purification electrodialysis treatment system which comprises a solvent purification electrodialysis treatment system, wherein the solvent purification electrodialysis treatment system comprises a primary filtering system, one side of the primary filtering system is provided with an activated carbon or carclazyte adsorption system, one side of the activated carbon or carclazyte adsorption system is provided with a secondary filtering system, one side of the secondary filtering system is provided with a pretreatment system, one side of the pretreatment system is provided with a filter element type filtering system, and the solvent purification electrodialysis treatment system further comprises reagent storage tanks, a control system, a heat exchanger, an electrodialysis membrane stack and related components thereof. The utility model can remove the degraded salt substances, suspended matters and oxidation degradation products to reach various physical and chemical indexes of the fresh solvent, improve the extraction efficiency of the aromatic hydrocarbon, simultaneously have low operation cost and reduce the discharge of waste liquid.
Description
Technical Field
The utility model relates to the technical field of solvent regeneration treatment, in particular to a solvent purification electrodialysis treatment system.
Background
In natural gas plants and oil refineries, amine liquid is usually used for removing H2S and CO2 in liquefied gas and dry gas, but after a solvent regeneration system runs for a period of time, the alcohol amine solution can generate accumulation of byproduct Heat Stable Salts (HSS for short), and the situations of suspended solids, dark color of the amine liquid and the like can also occur.
In the industries of petrifaction, metallurgy, power plants and the like, an organic amine desulphurization technology (one of wet flue gas desulphurization) is widely used in the global scope at present, and compared with the traditional limestone or gypsum adsorption method, the technology has the advantages of high desulphurization efficiency, regeneration of an absorbent, recycling of SO2, effective solution of the stability problem of flue gas acidity control and the like. However, as the reaction proceeds, the system accumulates some non-renewable salts (thermal stable salts HSS) and also captures some of the dust in the exhaust gas.
The main problems that are plagued are: 1. the content of the heat stable salt is increased, so that the concentration of the effective amine is reduced and cannot reach the design level, and the product is unqualified; 2. the circulation amount of the amine liquid is increased, so that the energy consumption is increased; continuously replenishing fresh amine liquid and increasing direct loss cost; 3. the reboiler, the lean-rich liquid heat exchanger and the like are seriously corroded, and the maintenance cost and the unplanned shutdown cost are increased; 4. the solid suspended substances are increased, and the stability of the amine liquid is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a solvent purification electrodialysis treatment system, which is different from the conventional ion exchange method, brings the risk of increasing sodium ions in the system and increases the discharge problem of alkali-containing wastewater, and solves the existing problems.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a solvent purification electrodialysis processing system, includes solvent purification electrodialysis processing system, solvent purification electrodialysis processing system includes primary filter system, primary filter system one side is provided with active carbon or carclazyte adsorption system, active carbon or carclazyte adsorption system one side are provided with secondary filter system, secondary filter system one side is provided with pretreatment systems, pretreatment systems is the filtration system that many filter cores loaded, solvent purification electrodialysis processing system still includes a plurality of solvent storage tanks, control system, heat exchanger, electrodialysis membrane stack and relevant parts.
As a preferred technical scheme of the utility model, the primary filtering system, the activated carbon or carclazyte adsorption system, the secondary filtering system, the pretreatment system, the plurality of solvent storage tanks, the electrodialysis membrane stack and the heat exchanger are connected through pipelines, valves, pressure gauges and the like.
As a preferred technical scheme of the utility model, the primary filtering system is used for coarse filtering, various suspended matters are filtered, a plurality of polypropylene coarse filter elements are filled, and the filtering precision is 25 microns.
In a preferred embodiment of the present invention, the activated carbon or clay adsorbent system is filled with activated carbon or clay for removing oils and hydrocarbons. .
As a preferred technical scheme of the utility model, the secondary filtering system is used for coarse filtering, various suspended matters are filtered, a plurality of polypropylene coarse and fat filter elements are filled, and the filtering precision is 5 microns.
As a preferable technical scheme of the utility model, the electrodialysis membrane stack adopts a homogeneous membrane to effectively remove various harmful ionic substances.
As a preferred technical scheme of the utility model, the primary filtration system, the activated carbon or carclazyte adsorption system, the secondary filtration system, the pretreatment system, the heat exchanger and the electrodialysis membrane stack system are sequentially connected through pipelines, and the solution to be treated sequentially passes through the pipelines, so that the aim of purifying the solvent is finally fulfilled.
As a preferred technical scheme of the utility model, under the action of current, the pretreatment system and each solvent storage tank transfer anions and cations to the cathode and the anode, so that harmful substances are removed.
Compared with the prior art, the utility model provides a solvent purification electrodialysis treatment system, which has the following beneficial effects:
according to the solvent purification electrodialysis treatment system, the inferior solvent treated by the solvent purification electrodialysis treatment system can be used for removing degraded ionic substances, suspended matters and oxidation degradation products, so that the inferior solvent can reach various physical and chemical indexes of a fresh solvent, the regeneration efficiency of the solvent is improved, the operation cost is low, and the discharge of waste liquid is reduced.
Drawings
FIG. 1 is a schematic flow diagram of a solvent purification electrodialysis treatment system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the present embodiment: the utility model provides a solvent purification electrodialysis processing system, includes solvent purification electrodialysis processing system, solvent purification electrodialysis processing system includes primary filter system, primary filter system one side is provided with active carbon or carclazyte adsorption system, active carbon or carclazyte adsorption system one side are provided with secondary filter system, secondary filter system one side is provided with pretreatment systems, pretreatment systems one side is provided with the filtration system who is equipped with many big flux filter cores, solvent purification electrodialysis processing system still includes control system, heat exchanger, electrodialysis membrane stack and relevant part.
In this embodiment, the solvent purification electrodialysis treatment system adopts an amine liquid purification service technology route including secondary filtration and electrodialysis desalination.
The filtration adopts a plurality of folding type thick filter cores, the filtration area and the filtration capacity are large, and the removal rate of solid particles larger than 1 micron is larger than 98 percent by combining precise filtration and ultrafiltration; the method adopts a plurality of special adsorbents to remove hydrocarbon substances, degradation products and other macromolecular polymers, and adopts an electrodialysis method to remove heat stable salt in amine liquid desalination to reduce the content below a target value.
The first order is the precision filter core filter of big pollutant carrying capacity of fold formula (filtration precision 5 mu m is equipped with 5 filter cores, and single filter core filter area is 9m2Receive sewageThe capacity can reach 6 kg). The second grade is precision filter core filter of big pollutant carrying capacity of fold formula (filtration precision 1 mu m, is equipped with 5 filter cores, and single filter core filter area is 9m2The pollutant holding capacity can reach 6 kg), and the filtering treatment capacity can reach 10 tons/hour of purification equipment.
1. The technical scheme for purifying the amine liquid comprises a process flow, purification and regeneration procedures, impurity components and waste water amount of regenerated waste water, indexes of the purified amine liquid, a guarantee period, an amine liquid loss rate and the like.
1.1 technological process:
the electrodialysis system undertakes the amine liquid desalting task, and the purification treatment capacity can reach 1-2 tons/hour. And the clear liquid filtered by the filter enters an electrodialysis desalination system and is circularly treated by an electrodialysis membrane desalination device, and most of inorganic salt and heat stable salt in the amine liquid are separated. And (4) carrying out post-treatment on the desalted feed liquid to obtain a qualified amine liquid product. Since the electrodialysis system does not require regeneration, there is no regeneration step in this project
1.2 purification step:
the process flow is as follows:
lean amine liquid → secondary filter → heat exchanger → fresh water tank → fresh water pump → cartridge filter → heat exchanger → electrodialysis membrane stack fresh water chamber → fresh water tank → purified amine liquid pump → commercial host amine liquid storage tank.
Note: a second-stage filter, wherein the first stage adopts a large-flux coarse filter, and the filtering precision is 5 mu m; the second stage adopts a large-flux fine filter with the filtering precision of 1 mu m.
Demineralized water → concentrated water tank → concentrated water pump → cartridge filter → heat exchanger → electrodialysis membrane stack concentrated chamber → concentrated water tank. ↓
Owner wastewater pool
Demineralized water → polar water tank → polar water pump → cartridge filter → heat exchanger → cathode chamber of electrodialysis membrane stack
↑ ↓ ↓
NaCl electrodialysis membrane stack anode chamber → polar water tank
1.3 clarification procedure notes:
1.3.1 when the electrodialysis starts to operate, water is firstly introduced and then the electricity is supplied; when the operation is stopped, the power is cut off first and then the water is stopped, and when the electrodialysis is stopped, the membrane should be kept wet.
1.3.2 starting and stopping, the valves for thick, thin and extremely water should be opened or closed smoothly and synchronously.
Performance assurance after solvent clean-up
The working principle and the using process of the utility model are as follows: the solvent purification electrodialysis treatment system is treated by the method, and degraded substances, suspended matters and oxidative degradation products are removed, so that the degraded substances, suspended matters and oxidative degradation products reach various physical and chemical indexes of a fresh solvent, the aromatic extraction efficiency is improved, the operation cost is low, and the discharge of waste liquid is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A solvent purification electrodialysis treatment system comprises the solvent purification electrodialysis treatment system and is characterized in that: the solvent purification electrodialysis processing system comprises a primary filtering system, one side of the primary filtering system is provided with an activated carbon or a carclazyte adsorption system, one side of the activated carbon or the carclazyte adsorption system is provided with a secondary filtering system, one side of the secondary filtering system is provided with a pretreatment system, one side of the pretreatment system is provided with a filter element type filtering system, and the solvent purification electrodialysis processing system further comprises a control system, a heat exchanger, an electrodialysis membrane stack and related components thereof.
2. A solvent purification electrodialysis treatment system according to claim 1, wherein: the primary filtering system, the activated carbon or carclazyte adsorption system, the secondary filtering system, the pretreatment system, each reagent storage tank and the heat exchanger are connected through pipelines, valves, pressure gauges and the like.
3. A solvent purification electrodialysis treatment system according to claim 1, wherein: the primary filtering system is filled with a plurality of polypropylene thick and fat filter elements, and the filtering precision is 25 microns.
4. A solvent purification electrodialysis treatment system according to claim 1, wherein: the filling filler of the activated carbon or clay adsorption system is activated carbon or clay.
5. A solvent purification electrodialysis treatment system according to claim 1, wherein: the secondary filtering system is filled with a plurality of polypropylene thick and fat filter elements, and the filtering precision is 5 microns.
6. A solvent purification electrodialysis treatment system according to claim 1, wherein: the electrodialysis membrane stack is formed by homogeneous membranes.
7. A solvent purification electrodialysis treatment system according to claim 1, wherein: the electrodialysis membrane stack is assembled by a considerable number of membrane pairs.
8. A solvent purification electrodialysis treatment system according to claim 1, wherein: the primary filtering system, the activated carbon or carclazyte adsorption system, the secondary filtering system, the pretreatment system, each reagent storage tank and the membrane stack are sequentially connected through pipelines.
9. A solvent purification electrodialysis treatment system according to claim 1, wherein: the pretreatment system, each reagent storage tank and the electrodialysis membrane stack transfer anions and cations to the cathode and the anode under the action of current, so that harmful substances are removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122346081.9U CN215975348U (en) | 2021-09-27 | 2021-09-27 | Solvent purification electrodialysis processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122346081.9U CN215975348U (en) | 2021-09-27 | 2021-09-27 | Solvent purification electrodialysis processing system |
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| CN215975348U true CN215975348U (en) | 2022-03-08 |
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