CN210058288U - Purifier of organic solvent desalination - Google Patents
Purifier of organic solvent desalination Download PDFInfo
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- CN210058288U CN210058288U CN201920538174.1U CN201920538174U CN210058288U CN 210058288 U CN210058288 U CN 210058288U CN 201920538174 U CN201920538174 U CN 201920538174U CN 210058288 U CN210058288 U CN 210058288U
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- ion exchange
- organic solvent
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- bed ion
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Abstract
The utility model relates to a purifier of organic solvent desalination discloses a purifier of organic solvent desalination, including the frame of device, each constitutional unit of integration on the frame has filter element formula security personnel filtration system, flat bed ion exchange system, ion exchange resin regeneration system, regeneration liquid circulation system and solvent recovery circulation system and control system respectively, and each intersystem is through pipeline, valve connection, and the operation process passes through flow sensor, liquid level and time control, and each fluid passes through explosion-proof pump and delivers. The device of the utility model has the advantages of reasonable design, be convenient for maintain the maintenance, and take up an area of lessly, can stably get rid of most saline matter in the organic solvent, solve some problems that actual production met, improve production efficiency.
Description
Technical Field
The invention relates to a purification device for organic solvent desalination.
Background
The technical progress of amine desulphurization in the natural gas and oil refining industries is also increasingly paid attention. The domestic natural gas and refinery gas desulfurization process has been developed mainly by monoethanolamine before 80 s in the 20 th century, mainly by a formula Methyldiethanolamine (MDEA) desulfurization technology, and a series of MDEA desulfurization solvents such as selective desulfurization, desulfurization and decarburization, organic sulfur removal (mainly for natural gas) and the like are developed according to different requirements. The popularization and application of the series MDEA desulfurization solvents have the obvious effects of saving energy, reducing consumption, reducing production cost and prolonging the service life of the desulfurization device. At present, the desulphurization device with different alcohol amines and different treatment capacities can be independently designed in China.
The hydramine solution is used for removing hydrogen sulfide and carbon dioxide contained in dry gas, liquefied gas and the like, so that the environmental pollution is avoided. However, a problem in the process of removing these acidic gases is that salts are formed by the combination of the amine liquid and anions in various forms in the solution, which restricts the amine liquid that can be worked, and causes the quality of the product to be not up to standard, even causes corrosion of the equipment, leakage of the solution, increased unplanned downtime, and increased maintenance costs. These anions must be removed to liberate more free amine.
Sulfolane solvent is one of ideal solvents for extracting aromatic hydrocarbons (benzene, toluene, xylene) from gasoline (reformed gasoline, cracked gasoline, etc.), and is widely used in the field of petrochemical industry. However, the main problem is that the sulfolane solvent is deteriorated under industrial operation conditions, and the sulfonic acid-based acidic substances generated by the deterioration affect the sulfolane performance, so that it is necessary to restore the sulfolane solvent to a fresh state by using a desalting technique.
Disclosure of Invention
The utility model discloses to the desorption of salt in the organic solvent, through suspended solid particle desorption system and solubility saline matter's desorption system, reach whole desulfurization decarbonization efficiency best. By combining the latest process, the shortage of compressed air as a material conveying power source in the prior art is overcome, and an explosion-proof electric pump is used for conveying materials, so that the problems of unstable material flow and the like caused by pressure fluctuation of the compressed air are avoided. And in order to avoid the loss of the organic solvent, a recovery system of the organic solvent is additionally arranged, so that the loss of the organic solvent is avoided, and the dosage of desalted water is reduced.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
a purification device for organic solvent desalination, all components of the desalination device are integrated on a frame, and the frame is provided with components of a flat bed ion exchange system, a safety type filtering system connected with the flat bed ion exchange system through a pipeline, a flow sensor, an ion exchange resin regeneration system connected with the flat bed ion exchange system through a pipeline, a regenerated liquid recovery system connected with the flat bed ion exchange system through a pipeline, and a solvent recovery circulation system connected with the flat bed ion exchange system through a pipeline;
the ion exchange resin regeneration system is provided with an ion exchange resin regeneration system liquid level controller, the regenerated liquid recovery system is provided with a regenerated liquid recovery system liquid level controller, and the solvent recovery circulation system is provided with a solvent recovery circulation system liquid level controller.
The desalting device is provided with an explosion-proof electric metering pump.
The safety type filtering system is filled with a plurality of fold PP filter elements.
And a flow sensor is arranged on the flat bed ion exchange system.
The ion exchange resin regeneration system is provided with a high, medium and low liquid level controller.
And the regeneration liquid recovery system is provided with high and low liquid level control.
And the solvent recovery circulation system is provided with high and low liquid level control.
The utility model discloses a technical scheme do, adopt suspended solid desorption and saline matter desorption to go on in step, reduced the ion exchange resin pollution of suspended solid in to the desalination system, reduce the desalination ability of resin, each system on the frame is cooperative each other, and the performance acts on separately, just can reach furthest desorption saline matter, reduces the material consumption, reduces the emission of wastes material. The whole set of device adopts PLC autonomous system, need not artifical on duty, and all signals can be sent to DCS control room, real time monitoring.
The above-described and other features, aspects, and advantages of the present application will become more apparent with reference to the following detailed description.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a process flow diagram of an organic solvent desalting apparatus according to the present invention.
Wherein the reference numerals are as follows:
the system comprises a flat bed ion exchange system 1, a security type filtering system 2, an ion exchange resin regeneration system 3, a regenerated liquid recovery system 4, a solvent recovery circulation system 5, a PLC automatic control system 6, an explosion-proof electric metering pump 7, a flow sensor 8, an ion exchange resin regeneration system liquid level controller 9, a regenerated liquid recovery system controller 10 and a solvent recovery circulation system controller 11.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
A purification device for organic solvent desalination, all components of the desalination device are integrated on a frame, and the frame is provided with components of a flat bed ion exchange system, a safety type filtering system connected with the flat bed ion exchange system through a pipeline, a flow sensor, an ion exchange resin regeneration system connected with the flat bed ion exchange system through a pipeline, a regenerated liquid recovery system connected with the flat bed ion exchange system through a pipeline, and a solvent recovery circulation system connected with the flat bed ion exchange system through a pipeline;
the ion exchange resin regeneration system is provided with an ion exchange resin regeneration system liquid level controller, the regenerated liquid recovery system is provided with a regenerated liquid recovery system liquid level controller, and the solvent recovery circulation system is provided with a solvent recovery circulation system liquid level controller.
The desalting device is provided with an explosion-proof electric metering pump.
The safety type filtering system is filled with a plurality of fold PP filter elements.
And a flow sensor is arranged on the flat bed ion exchange system.
The ion exchange resin regeneration system is provided with a high, medium and low liquid level controller.
And the regeneration liquid recovery system is provided with high and low liquid level control.
And the solvent recovery circulation system is provided with high and low liquid level control.
A purification device for organic solvent desalination is disclosed, as shown in figure 1, all components are integrated on a skid, the skid is provided with components of a flat bed ion exchange system 1, a safety type filtering system 2 connected with the flat bed ion exchange system 1 through pipelines, a flow sensor 8, an ion exchange resin regeneration system 3 connected with the flat bed ion exchange system 1 through pipelines, a regenerated liquid recovery system 4 and a solvent recovery circulation system 5, the ion exchange resin regeneration system 3, the regenerated liquid recovery system 4 and the solvent recovery circulation system 5 are respectively provided with an ion exchange resin regeneration system liquid level controller 9, a regenerated liquid recovery system level controller 10 and a solvent recovery circulation system level controller 11, and an explosion-proof electric metering pump 7 is arranged.
According to the utility model discloses will reach the purpose of desorption saline matter in the organic solvent and avoid the organic solvent loss, increase one set of solvent recovery circulation system, change to explosion-proof electronic measuring pump and corresponding control measure. The operation process of the whole system is as follows:
step A, after the organic solvent containing higher salt passes through a security type filtering system and suspended matters are removed, the organic solvent after salt substances are removed passes through a flat bed ion exchange system 1 and returns to an organic solvent storage tank;
b, starting a metering pump, enabling water in the solvent recovery circulation system to pass through the flat bed ion exchange system 1 from bottom to top, and flushing residual organic solvent in the exchange system to a storage tank, wherein the flushing amount needs to be set according to the balance of the whole system and cannot cause the change of the concentration of the organic solvent;
step C, enabling desalted water to pass through the flat bed ion exchange system 1 from bottom to top, and enabling washing liquid to return to the solvent recovery circulation system 5;
d, regenerating the resin in the flat bed ion exchange system by using the regeneration liquid in the ion exchange resin regeneration system 3 through a metering pump, and sending the regeneration liquid containing a large amount of salt substances to a sewage treatment plant for treatment;
e, flushing the resin with the recovery liquid in the recovery system 4 of the regeneration liquid to the regeneration system 3 of the ion exchange resin by a metering pump, wherein the step is liquid level control;
step F, enabling desalted water to pass through the flat bed ion exchange system 1 from bottom to top, and enabling washing liquid to return to the regeneration liquid recovery system 4, wherein liquid level control is adopted in the step;
step A, B, C, D, E, F constitutes a desalting cycle period, the cycle time is determined by the organic solvent throughput and salt content, the normal duty cycle is fifteen minutes, and four cycles can be performed in one hour. The desalting device is automatically controlled by a PLC, if the flow is too low, the running time is too long and the like, an alarm point can be fed back to the DCS, and monitoring personnel can check and process the liquid in time.
The ion exchange resin regeneration system 3, the regenerated liquid recovery system 4 and the solvent recovery circulation system 5 are controlled by the metering pump 7, so that the instability of conveying by adopting compressed air in conventional equipment is avoided.
Example 1:
in the desalting process, the original salt content of the organic solvent is 4%, the salt content after treatment is 1%, the treatment amount is 500 liters per cycle, and the cycle time is 15 minutes. The amount of desalination per hour is (4% -1%) x 500 x 60/15 ═ 60 kg.
The following table compares the amounts of desalted water used.
The utility model discloses a desalination device overall arrangement is compact, and the sled dress structure is convenient for install, easy operation, and is energy-efficient, can effectually realize continuous desalination to organic solvent.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and the description is given here only for clarity, and those skilled in the art should integrate the description, and the embodiments may be combined appropriately to form other embodiments understood by those skilled in the art.
Claims (7)
1. A purification device for organic solvent desalination is characterized in that all components of the purification device are integrated on a frame, and the frame is provided with components including a flat bed ion exchange system, a safety type filtering system connected with the flat bed ion exchange system through a pipeline, a flow sensor, an ion exchange resin regeneration system connected with the flat bed ion exchange system through a pipeline, a regeneration liquid recovery system connected with the flat bed ion exchange system through a pipeline, and a solvent recovery circulation system connected with the flat bed ion exchange system through a pipeline;
the ion exchange resin regeneration system is provided with an ion exchange resin regeneration system liquid level controller, the regenerated liquid recovery system is provided with a regenerated liquid recovery system liquid level controller, and the solvent recovery circulation system is provided with a solvent recovery circulation system liquid level controller.
2. The purification device for desalting organic solvent according to claim 1, wherein said desalting device is equipped with an explosion-proof electric metering pump.
3. The purification apparatus for desalting organic solvent according to claim 1, wherein said cartridge filter system is filled with a plurality of pleated PP filter elements.
4. The purification apparatus for desalting organic solvent according to claim 1, wherein said flat bed ion exchange system is provided with a flow sensor.
5. The purification apparatus for desalting organic solvent according to claim 1, wherein said ion exchange resin regeneration system is provided with high, medium and low level controllers.
6. The purification apparatus for desalting organic solvent according to claim 1, wherein said regeneration liquid recovery system is provided with high and low level controls.
7. The purification apparatus for desalting organic solvent according to claim 1, wherein said solvent recycling system is provided with high and low level controls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920538174.1U CN210058288U (en) | 2019-04-19 | 2019-04-19 | Purifier of organic solvent desalination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920538174.1U CN210058288U (en) | 2019-04-19 | 2019-04-19 | Purifier of organic solvent desalination |
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| Publication Number | Publication Date |
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| CN210058288U true CN210058288U (en) | 2020-02-14 |
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| CN201920538174.1U Active CN210058288U (en) | 2019-04-19 | 2019-04-19 | Purifier of organic solvent desalination |
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| CN (1) | CN210058288U (en) |
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