CN203710738U - Equipment system for quasi-static adsorbent purification of organic solvent and in-situ regeneration of molecular sieve - Google Patents

Equipment system for quasi-static adsorbent purification of organic solvent and in-situ regeneration of molecular sieve Download PDF

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Publication number
CN203710738U
CN203710738U CN201420062355.9U CN201420062355U CN203710738U CN 203710738 U CN203710738 U CN 203710738U CN 201420062355 U CN201420062355 U CN 201420062355U CN 203710738 U CN203710738 U CN 203710738U
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China
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molecular sieve
regenerated
organic solvent
quasistatic
regeneration
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Expired - Fee Related
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CN201420062355.9U
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Chinese (zh)
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王仁衡
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JIANGXI YOULI NEW MATERIALS CO Ltd
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JIANGXI YOULI NEW MATERIALS CO Ltd
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Abstract

The utility model discloses an equipment system for quasi-static adsorbent purification of an organic solvent and in-situ regeneration of a molecular sieve. The equipment system comprises a raw material tank, a regenerative molecular sieve column and a liquid storage tank, wherein a feed valve and a first control valve which is connected with a vacuum and inert gas supply system are arranged on the raw material tank; the raw material tank is also connected with the regenerative molecular sieve column through a metering pump and a second control valve; and the regenerative molecular sieve column is connected with the liquid storage tank by a filter. The system can be used for implementing the purification of the solvent by use of a molecular sieve within a most effective time so that the adsorption efficiency of the molecular sieve is improved and a good in-situ regeneration effect is achieved. The overall operation process is integrated, the system has the advantages of simple operation, energy conservation and high efficiency, and the content of residual carbon of a regenerating agent approaches to the regeneration effect of high-temperature roasting under an optimal washing regeneration condition.

Description

The device systems that a kind of organic solvent quasistatic absorption is purified and molecular sieve original position is regenerated
Technical field
The utility model relates to organic solvent process field, the device systems that specifically a kind of organic solvent quasistatic absorption is purified and molecular sieve original position is regenerated.
Background technology
Static Adsorption is the adsorption method corresponding with Dynamic Adsorption.The adsorbent of Static Adsorption specified amount reaches balance through fully contacting for a long time with quantitative solution.The assay method of static adsorption equilibria has: (1) keeps the pressure of gas phase constant, after absorption after a while, and the volumetric method of mensurated gas composition volume reducing value; (2) adsorbent fully contacts with gas, measures the gravimetric method of adsorbent weight value added; (3) size that the variation of mensurated gas composition pressure (constancy of volume) or solution concentration change.The current DeGrain of the purifying technique of production use to the purifying of raw material, hydrone in raw material and the small molecular weight impurity of absorption can not be well removed in purification.Regenerating molecular sieve all needs catalyst to shift out from reaction system mostly, has increased consumption, and need to separately join immersion system, realizes comparatively difficulty.
Utility model content
The purpose of this utility model is to provide the device systems that a kind of organic solvent quasistatic absorption is purified and molecular sieve original position is regenerated, the mode of quasistatic absorption is the improvement of pure Static Adsorption mode, this process spread all advantages of pure Static Adsorption, and improved the low deficiency of pure Static Adsorption treatment effeciency, can also solve solvent and process inhomogeneous situation simultaneously, reduce between molecular sieve and mutually clash into cracking or the efflorescence causing, extend the service life of molecular sieve, improve product quality simultaneously.The regeneration of molecular sieve original position is that regeneration directly completes in molecular sieve column by the mode of the outer heating of molecular sieve column being reached to the object of regeneration.
For achieving the above object, the utility model provides following technical scheme:
The device systems that a kind of organic solvent quasistatic absorption is purified and molecular sieve original position is regenerated, comprise head tank, regenerated molecular sieve post and liquid reserve tank, described head tank is provided with inlet valve, and the first control valve being connected with inert gas feed system with vacuum, described head tank is also connected regenerated molecular sieve post by measuring pump with the second control valve, and described regenerated molecular sieve post connects liquid reserve tank by filter.
As further program of the utility model: described head tank is provided with Pressure gauge.
As further program of the utility model: described regenerated molecular sieve post comprises inner heater strip and molecular sieve, and outside heat-insulation layer, described heater strip adopts temperature control system to control, by molecular sieve high-temperature baking is reached to regeneration object.
As further program of the utility model: between described regenerated molecular sieve post and filter, and be equipped with valve between filter and liquid reserve tank.
Compared with prior art, the beneficial effects of the utility model are: this system can complete the purifying of molecular sieve to solvent within the most effective time, improve the adsorption efficiency of molecular sieve; In-situ regeneration is effective.Whole operating process realizes integrated, has advantages of simple to operate, efficient energy-saving, and under optimum regenerated from washing condition, the carbon residue content of regenerative agent approaches the regeneration effect of high-temperature roasting.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the device systems of organic solvent quasistatic absorption purification and the regeneration of molecular sieve original position;
In figure: 1-inlet valve, 2-the first control valve, 3-head tank, 4-measuring pump, 5-the second control valve, 6-regenerated molecular sieve post, 7-filter, 8-liquid reserve tank.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, the device systems that a kind of organic solvent quasistatic absorption is purified and molecular sieve original position is regenerated, comprise head tank 3, regenerated molecular sieve post 6 and liquid reserve tank 8, described head tank 3 is provided with inlet valve 1, and the first control valve 2 being connected with inert gas feed system with vacuum, described head tank 3 is also connected regenerated molecular sieve post 6 by measuring pump 4 with the second control valve 5, and described regenerated molecular sieve post 6 connects liquid reserve tank 8 by filter 7.
As further program of the utility model: described head tank 3 is provided with Pressure gauge.
As further program of the utility model: described regenerated molecular sieve post 6 comprises inner heater strip and molecular sieve, and outside heat-insulation layer, described heater strip adopts temperature control system to control, by molecular sieve high-temperature baking is reached to regeneration object.
As further program of the utility model: between described regenerated molecular sieve post 6 and filter 7, and be equipped with valve between filter 7 and liquid reserve tank 8.
Operation principle of the present utility model is: this system adopts quasistatic absorption can improve the low shortcoming of pure Static Adsorption treatment effeciency, and this system organic solvent quasistatic absorption is purified and is regenerated as an integral body with molecular sieve original position.The principle of its absorption: the flow of controlling organic solvent by measuring pump, control the time of contact of organic solvent and molecular sieve, within the most effective time, complete the purifying of molecular sieve to solvent, improve the adsorption efficiency of molecular sieve, can also solve solvent and process inhomogeneous situation simultaneously, reduce between molecular sieve and mutually clash into cracking or the efflorescence causing, extend the service life of molecular sieve, improve product quality simultaneously.Difference based on different catalysts deactivation mechanism of molecular sieve original position regeneration and the basis of prior art, provide a kind of in situ regeneration method for the molecular sieve catalyst of inactivation in slight catalytic reaction of better effects if.The basic principle of in-situ regeneration: the mode of logical heat transfer heats molecular sieve, and by vacuum and inert gas feed system molecular sieve carried out to vacuum drawn, nitrogen replacement, separate out the impurity in framework of molecular sieve hole, finally make molecular sieve recover completely or approach the state before absorption.
Embodiment: adopt quasistatic absorption to purify ethylene carbonate (EC), dimethyl carbonate (DMC) experimental result are shown, quasistatic absorption has more significant effect than the purifying technique of current production use to the purifying of raw material.Quasistatic absorption is purified and can not only be removed the hydrone in raw material, can also adsorb small molecular weight impurity, such as the ethylene glycol in EC and diethylene glycol, methyl alcohol in DMC, thereby removed better the impurity in organic solvent, promoted the quality of organic solvent, and then improve electrolyte product quality.Quasistatic absorption can also solve solvent and process inhomogeneous situation, reduces between molecular sieve and mutually clashes into cracking or the efflorescence causing, and extends the service life of molecular sieve, improves product quality simultaneously.
Quasistatic suction type carries out adsorption treatment to organic solvent respectively, and the organic solvent standard after absorption is as follows respectively:
EC standard: Chun Du≤99.99%, moisture <7ppm, ethylene glycol <1ppm, diethylene glycol <1ppm
DMC standard: Chun Du≤99.98%, moisture <7ppm, methyl alcohol <10ppm
DEC standard: Chun Du≤99.98%, moisture <7ppm, ethanol <20ppm
EMC standard: Chun Du≤99.98%, moisture <7ppm, methyl alcohol <10ppm
PC standard: Chun Du≤99.98%, moisture <7ppm, isopropyl alcohol <10ppm, 1,2-PD <10ppm
The experiment of then saturated molecular sieve being regenerated shows, after molecular sieve is saturated, through baking, vacuum drawn, the nitrogen replacement of 250-350 ℃, separates out after the impurity in framework of molecular sieve hole, still has very strong adsorption capacity.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present utility model or essential characteristic, can realize the utility model with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than above-mentioned explanation, is therefore intended to include in the utility model dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should make description as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.

Claims (4)

1. an organic solvent quasistatic is adsorbed the device systems of purifying with the regeneration of molecular sieve original position, comprise head tank, regenerated molecular sieve post and liquid reserve tank, it is characterized in that, described head tank is provided with inlet valve, and the first control valve being connected with inert gas feed system with vacuum, described head tank is also connected regenerated molecular sieve post by measuring pump with the second control valve, and described regenerated molecular sieve post connects liquid reserve tank by filter.
2. the device systems that organic solvent quasistatic absorption according to claim 1 is purified and molecular sieve original position is regenerated, is characterized in that, described head tank is provided with Pressure gauge.
3. the device systems that organic solvent quasistatic absorption according to claim 1 is purified and molecular sieve original position is regenerated, it is characterized in that, described regenerated molecular sieve post comprises inner heater strip and molecular sieve, and outside heat-insulation layer, and described heater strip adopts temperature control system to control.
4. the device systems that organic solvent quasistatic absorption according to claim 1 is purified and molecular sieve original position is regenerated, is characterized in that, between described regenerated molecular sieve post and filter, and is equipped with valve between filter and liquid reserve tank.
CN201420062355.9U 2014-02-12 2014-02-12 Equipment system for quasi-static adsorbent purification of organic solvent and in-situ regeneration of molecular sieve Expired - Fee Related CN203710738U (en)

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Application Number Priority Date Filing Date Title
CN201420062355.9U CN203710738U (en) 2014-02-12 2014-02-12 Equipment system for quasi-static adsorbent purification of organic solvent and in-situ regeneration of molecular sieve

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CN203710738U true CN203710738U (en) 2014-07-16

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Granted publication date: 20140716

Termination date: 20190212