CN103736473A - Zeolite molecular sieve regeneration method - Google Patents
Zeolite molecular sieve regeneration method Download PDFInfo
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- CN103736473A CN103736473A CN201410020441.8A CN201410020441A CN103736473A CN 103736473 A CN103736473 A CN 103736473A CN 201410020441 A CN201410020441 A CN 201410020441A CN 103736473 A CN103736473 A CN 103736473A
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- molecular sieve
- zeolite molecular
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Abstract
The invention relates to the technical field of zeolite molecular sieves and in particular relates to a zeolite molecular sieve regeneration method. The zeolite molecular sieve regeneration method comprises the following steps: putting a zeolite molecular sieve in a zeolite molecular sieve cylinder, and starting an electric heating plate arranged in the zeolite molecular sieve cylinder, so that the zeolite molecular sieve cylinder performs heating; starting a vacuum pump, and exhausting air in the zeolite molecular sieve cylinder from a vacuum outlet, so that a vacuum space is formed in the zeolite molecular sieve cylinder. According to the zeolite molecular sieve regeneration method, because the surface pressure of the zeolite molecular sieve which is subjected to water absorption saturation under negative pressure conditions is lower than pressure in an inner hole, water molecules in the hole are facilitated to desorb from the molecular sieve. The desorption power of the water molecules in the molecular sieve is reduced in a vacuum environment, and desorption heat for desorbing the water molecules from the molecular sieve is equivalently reduced, so that the heating temperature of zeolite molecular sieve dehydration and regeneration can be reduced, the regeneration time is shortened, and the dehydration and regeneration rate of the zeolite molecular sieve is improved.
Description
Technical field
The present invention relates to technical field of zeolite, especially a kind of method of zeolite molecular sieve regeneration.
Background technology
Zeolite molecular sieve has structure and the feature of crystal, and surface is solid skeletal, and the effect of absorption molecule can be played in inner hole.Cage in zeolite or passage small-sized, makes gravitational field wherein very strong.Therefore, it far exceedes the adsorbent of other types to the adsorption capacity of adsorption molecule, even if the dividing potential drop of adsorbate (or concentration) is very low, adsorbance is still very considerable.So zeolite molecular sieve is often used to the materials such as adsorbed water, organic matter in industrial production, meets industrial production demand.After zeolite molecular sieve absorption is saturated, can remove the material adsorbing in zeolite by regeneration, realization recycles.Under normal circumstances, zeolite molecular sieve adsorbed water molecule occupies the majority.And for inhaling water saturated zeolite molecular sieve, generally (as accompanying drawing two), is used 200～350 ℃ of dry gas at 0.3～0.5kg/cm
2pressure under, by molecular sieve bed 3～4 hours, outlet temperature is dropped to after 110～180 ℃, carry out coolingly, remove the moisture in molecular sieve, realize regeneration.This renovation process because of its heat source temperature high, the recovery time is long, has increased equipment investment and energy consumption cost.Thereby, limited the extensive use of zeolite molecular sieve.
Summary of the invention
In order to overcome the high deficiency of existing zeolite molecular sieve regeneration cost, the invention provides a kind of method of zeolite molecular sieve regeneration.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method of zeolite molecular sieve regeneration, zeolite molecular sieve is placed in zeolite molecular sieve cylindrical shell, starting the electric boiling plate being arranged in zeolite molecular sieve cylindrical shell heats zeolite molecular sieve cylindrical shell, start subsequently vavuum pump the air of zeolite molecular sieve cylindrical shell is gone out to extract out from vacuum outlet, make formation vacuum space in zeolite molecular sieve cylindrical shell.
According to another embodiment of the invention, further comprise, described electric boiling plate heats zeolite molecular sieve cylindrical shell, and the temperature of heating is 140 ℃-160 ℃.
According to another embodiment of the invention, further comprise, under the environment of zeolite molecular sieve cylindrical shell vacuum, electric boiling plate continuous heating was closed electric boiling plate after 1.2-2.2 hour.
According to another embodiment of the invention, further comprise, close after electric boiling plate final vacuum pump continues to vacuumize 10-30min and close again vavuum pump.
The invention has the beneficial effects as follows, plant the method utilization of zeolite molecular sieve regeneration and inhale the pressure that water saturated zeolite molecular sieve its surface pressing under condition of negative pressure is less than internal cavity, be conducive to hole internal water molecule desorption molecular sieve.Vacuum environment has reduced the desorption of molecular sieve internal water molecule, is equivalent to reduce the desorption heat that hydrone departs from molecular sieve, thereby can reduces the heating-up temperature that zeolite molecular sieve dehydration is regenerated, and shortens the recovery time, improves the dehydration regeneration rate of zeolite molecular sieve.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is background technology structural representation of the present invention;
In figure 1, vacuum outlet, 2, zeolite molecular sieve, 3, electric boiling plate, 4, zeolite molecular sieve cylindrical shell, 5, vavuum pump.
The specific embodiment
If Fig. 1 is structural representation of the present invention, a kind of method of zeolite molecular sieve regeneration, zeolite molecular sieve 2 is placed in zeolite molecular sieve cylindrical shell 4, starting the electric boiling plate 3 being arranged in zeolite molecular sieve cylindrical shell 4 heats zeolite molecular sieve cylindrical shell 4, start subsequently vavuum pump 5 air of zeolite molecular sieve cylindrical shell 4 is gone out to extract out from vacuum outlet 1, make the interior formation of zeolite molecular sieve cylindrical shell 4 vacuum space.
According to another embodiment of the invention, further comprise, described electric boiling plate 3 heats zeolite molecular sieve cylindrical shell 4, and the temperature of heating is 140 ℃-160 ℃.
According to another embodiment of the invention, further comprise, under the environment of zeolite molecular sieve cylindrical shell 4 vacuum, after electric boiling plate 3 continuous heating 1.2-2.2 hours, close electric boiling plate 3.
According to another embodiment of the invention, further comprise, close after electric boiling plate 3 final vacuum pumps 5 continue to vacuumize 10-30min and close again vavuum pump 5.
Embodiments of the invention one:
Respectively by zeolite molecular sieve saturated moisture absorption 150 ℃ of thermal regenerations under 200 ℃ of thermal regenerations of normal pressure and vacuum environment.After 2 hours, the regeneration rate of the two zeolite reaches respectively 82.9% and 82%.Data are known thus, in the identical situation of regeneration effect, vacuumize the dehydration regeneration heating-up temperature that can reduce zeolite molecular sieve.
Embodiments of the invention two:
Respectively by zeolite molecular sieve saturated moisture absorption 150 ℃ of thermal regenerations under 150 ℃ of thermal regenerations of normal pressure and vacuum environment.After 3 hours, under normal pressure, the regeneration rate of zeolite reaches 67.13%, and the regeneration rate of vacuum condition zeolite after lower 2 hours reaches 82%.Under vacuum condition, not only shortened as can be seen here the time of zeolite dehydration regeneration but also improved zeolite regeneration rate.
Claims (4)
1. the method for a zeolite molecular sieve regeneration, it is characterized in that, zeolite molecular sieve (2) is placed in zeolite molecular sieve cylindrical shell (4), starting the electric boiling plate (3) being arranged in zeolite molecular sieve cylindrical shell (4) heats zeolite molecular sieve cylindrical shell (4), start subsequently vavuum pump (5) air of zeolite molecular sieve cylindrical shell (4) is gone out to extract out from vacuum outlet (1), make formation vacuum space in zeolite molecular sieve cylindrical shell (4).
2. the method for zeolite molecular sieve regeneration according to claim 1, is characterized in that, described electric boiling plate (3) heats zeolite molecular sieve cylindrical shell (4), and the temperature of heating is 140 ℃-160 ℃.
3. the method for zeolite molecular sieve regeneration according to claim 1, is characterized in that, under the environment of zeolite molecular sieve cylindrical shell (4) vacuum, electric boiling plate (3) is closed electric boiling plate (3) after continuous heating 1.2-2.2 hour.
4. the method for zeolite molecular sieve regeneration according to claim 1, is characterized in that, closes after electric boiling plate (3) final vacuum pump (5) continues to vacuumize 10-30min and closes vavuum pump (5) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410020441.8A CN103736473A (en) | 2014-01-17 | 2014-01-17 | Zeolite molecular sieve regeneration method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410020441.8A CN103736473A (en) | 2014-01-17 | 2014-01-17 | Zeolite molecular sieve regeneration method |
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| CN103736473A true CN103736473A (en) | 2014-04-23 |
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| CN201410020441.8A Pending CN103736473A (en) | 2014-01-17 | 2014-01-17 | Zeolite molecular sieve regeneration method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105854855A (en) * | 2016-03-28 | 2016-08-17 | 苏州市晶协高新电子材料有限公司 | Regeneration method for 4A molecular sieve used for acetone dehydration |
| CN113145089A (en) * | 2020-01-22 | 2021-07-23 | 苏州微木智能系统有限公司 | Molecular sieve off-line reactivator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131137A (en) * | 1994-09-26 | 1996-09-18 | 埃尔夫阿托化学有限公司 | Process for purification of difluoromethane |
| CN1552514A (en) * | 2003-05-30 | 2004-12-08 | 韬 李 | Preparation and products of strong active block molecular sieves and their regeneration |
| US20040248727A1 (en) * | 2003-06-09 | 2004-12-09 | Marc Straub | Molecular sieve with enhanced performance in air separation |
| CN202555280U (en) * | 2012-04-06 | 2012-11-28 | 江苏达诺尔半导体超纯科技有限公司 | Molecular sieve regeneration device in high purity solvent production process |
-
2014
- 2014-01-17 CN CN201410020441.8A patent/CN103736473A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131137A (en) * | 1994-09-26 | 1996-09-18 | 埃尔夫阿托化学有限公司 | Process for purification of difluoromethane |
| CN1552514A (en) * | 2003-05-30 | 2004-12-08 | 韬 李 | Preparation and products of strong active block molecular sieves and their regeneration |
| US20040248727A1 (en) * | 2003-06-09 | 2004-12-09 | Marc Straub | Molecular sieve with enhanced performance in air separation |
| CN202555280U (en) * | 2012-04-06 | 2012-11-28 | 江苏达诺尔半导体超纯科技有限公司 | Molecular sieve regeneration device in high purity solvent production process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105854855A (en) * | 2016-03-28 | 2016-08-17 | 苏州市晶协高新电子材料有限公司 | Regeneration method for 4A molecular sieve used for acetone dehydration |
| CN113145089A (en) * | 2020-01-22 | 2021-07-23 | 苏州微木智能系统有限公司 | Molecular sieve off-line reactivator |
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Application publication date: 20140423 |