CN104841163B - A kind of simulate the method cleaning resin in moving bed - Google Patents
A kind of simulate the method cleaning resin in moving bed Download PDFInfo
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- CN104841163B CN104841163B CN201510285912.2A CN201510285912A CN104841163B CN 104841163 B CN104841163 B CN 104841163B CN 201510285912 A CN201510285912 A CN 201510285912A CN 104841163 B CN104841163 B CN 104841163B
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- 239000011347 resin Substances 0.000 title claims abstract description 33
- 229920005989 resin Polymers 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004140 cleaning Methods 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 230000000740 bleeding effect Effects 0.000 claims abstract description 17
- 238000004088 simulation Methods 0.000 claims abstract description 17
- 238000002834 transmittance Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 20
- 239000000470 constituent Substances 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Processes Of Treating Macromolecular Substances (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The present invention provides a kind of method simulated and clean resin in moving bed, after running to, including system stripping stage, the knockout tower that described pressure is higher, before strippant enters next knockout tower, is isolated with other knockout towers by knockout tower higher for described pressure；Feed liquid within knockout tower higher for described pressure is bled off；Close air bleeding valve and the circulating valve of the higher knockout tower of described pressure, bottom the knockout tower that described pressure is higher, enter strippant；Open the air bleeding valve of the higher knockout tower of described pressure, to there being liquid to flow out, close air bleeding valve；Open the blowoff valve of the higher knockout tower of described pressure, limpid without visible foreign, transmittance >=95% to the liquid flowed out, clean complete.As it has been described above, the simulation moving bed of the present invention cleans the method for resin, have the advantages that and just can clean resin in tower by above method without labor intensity, liftout and system cycle time.And constituent content distribution in before not affecting separation, improve work efficiency.
Description
Technical field
The invention belongs to chemical field, particularly relate to a kind of method simulated and clean resin in moving bed.
Background technology
Simulation moving bed is the separation equipment that chemical field is conventional, and the resin filled by detached dowel in simulation moving bed carries out isolated and purified.After but equipment uses a period of time, simulation moving bed knockout tower column body there will be pressure and increases or the situation of negative pressure, this situation can damage the equipment such as post outer circulation pump, effusion meter after occurring, and flow shakiness has a strong impact on separating effect in causing system, in What is more post, pressure reaches capacity and has potential safety hazard.
The method solving this situation at present moves on to resin to be carried out outside detached dowel exactly.For the cleaning of resin, first the feed liquid within simulated moving bed system must be ejected, be only to enter to elute water, do not feed during ejecting, until the liquid refractive power in discharging is below 2%, till being not enough to reclaim.Typically it is mounted with 20m3It is about 25h that the simulation moving bed of resin ejects time of feed liquid, and the feed liquid refractive power gone out during this period is the most on the low side, causes later stage steam consumption quantity to be greatly increased.After feed liquid is ejected in system, also with water, the resin in simulated moving bed system is ejected, each simulation moving bed has several knockout towers, during resin removal knockout tower is external, needing installation repeatedly, dismounting pipeline the resin in each knockout tower could be removed, the amount of labour is bigger.After removal, being placed in a big purge tank, bottom water flowing and compressed air, so broken resin and impurity will be washed out.The consumption of water is the biggest in the process.If there being sufficiently large back wash tank, the most handy 24h after cleaning up.After having cleaned, cleaned resin membrane pump is driven in knockout tower.Finally, internal system first must be full of water, system just can bring into operation, and creates the liquid of substantial amounts of low refractive power during system circulation, and steam consumption quantity is big, and needs the about 16h circulation could properly functioning discharging.
In above whole cleaning process, consuming substantial amounts of manpower, time and the energy, production efficiency is greatly reduced.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of method simulated and clean resin in moving bed.
For achieving the above object and other relevant purposes, the present invention provides a kind of method simulated and clean resin in moving bed, comprises the steps:
(1) knockout tower that in detection simulation moving bed, pressure is higher；
(2), after system stripping stage runs to the knockout tower that described pressure is higher, before strippant enters next knockout tower, knockout tower higher for described pressure is isolated with other knockout towers；
(3) feed liquid within knockout tower higher for described pressure is bled off；
(4) close air bleeding valve and the circulating valve of the higher knockout tower of described pressure, bottom the knockout tower that described pressure is higher, enter strippant, until pressure reaches 0.18-0.22MPa in tower；
(5) open the air bleeding valve of the higher knockout tower of described pressure, to there being liquid to flow out, close air bleeding valve；
(6) blowoff valve of the higher knockout tower of described pressure is opened, limpid without visible foreign, transmittance >=95% to the liquid flowed out, clean complete.
Simulation moving bed has in the separation process carrying out feed liquid and is divided into four districts, respectively stripping stages, an essence section, adsorption section, two essence sections, simulation moving bed running Zhong Sige district all knockout towers between constantly move, in stripping stage, have strippant.Knockout tower in stripping stage is that refractive power is minimum in whole system.The most direct strippant washs the resin in this tower and distributor.
According to the present invention, described strippant is water.
According to one of embodiment of the present invention, the higher knockout tower of pressure refers to the top of separation chamber under operation and the bottom pressure reduction of this separation chamber separation chamber more than 0.03MPa.
Pressure gauge is arranged at top and the bottom of each separation chamber of simulation moving bed, normal condition next top and pressure differential 0.03MPa of bottom, when resin crushes or solid impurity occurs in feed liquid, separation chamber's pressure differential reaches 0.1MPa, the highest, the entrance foreign body of certain separation chamber or resin arise that the phenomenon that pressure reduction is higher when crushing.
In step (4), before entering strippant, feed liquid in this separation chamber has bled off, remaining in separation chamber is the air in resin and resin space, close air bleeding valve and circulating valve, strippant is entered from bottom, entrance along with strippant, the top of separation chamber is enriched air, the air that room pressure to be separated reaches in 0.18-0.22MPa(i.e. separation chamber has reached 0.18-0.22MPa) time, now open air bleeding valve (step 5), the air of the inside just carries out the broken resin being attached on distributor and impurity band to purge (when reaching this pressure, air blowing is just understood effectively), treat that air is drained, strippant moves from lower curtate, flow out from exhaust-valve.)
As it has been described above, the simulation moving bed of the present invention cleans the method for resin, have the advantages that and just can clean resin in tower by above method without labor intensity, liftout and system cycle time.And constituent content distribution in before not affecting separation, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is shown as simulating the structural representation of moving bed；
Fig. 2 is the partial enlarged drawing (I amplification) being shown as Fig. 1；
Figure 1 is strippant tank, 2 be material liquid tank, 3 be products pot, 4 be side-product tank, 5 be knockout tower, 51 be strippant valve, 52 be feed liquid valve, 53 be product valve, 54 be side-product valve, 55 be circulating valve, 56 be air bleeding valve, 57 be ball valve, 58 be blowoff valve, 6 for effusion meter.
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art can be understood other advantages and effect of the present invention easily by the content disclosed by this specification.The present invention can also be carried out by the most different detailed description of the invention or apply, and the every details in this specification can also carry out various modification or change based on different viewpoints and application under the spirit without departing from the present invention.
It should be clear that the conventional equipment in the not concrete process equipment indicated or device all use this area in the following example or device；All force value and scope are all referring to absolute pressure.
Additive method step can also be there is before and after described combination step in addition, it is to be understood that the one or more method steps mentioned in the present invention do not repel or additive method step can also be inserted, except as otherwise noted between these steps specifically mentioned；Will also be understood that, combination annexation between the one or more equipment/devices mentioned in the present invention is not repelled and can also be there are other equipment/devices before and after described unit equipment/device or can also insert other equipment/devices, except as otherwise noted between these two equipment/devices specifically mentioned.And, except as otherwise noted, the numbering of various method steps is only the convenient tool differentiating various method steps, rather than for limiting the ordering of various method steps or limiting the enforceable scope of the present invention, being altered or modified of its relativeness, in the case of without essence change technology contents, when being also considered as the enforceable category of the present invention.
Simulation moving bed has in the separation process carrying out feed liquid and is divided into four districts, respectively stripping stages, an essence section, adsorption section, and two essence sections have strippant at stripping stage, and the most most strippant is water.Knockout tower in stripping stage is that refractive power is minimum in whole system.Simulation moving bed running Zhong Sige district all knockout towers between constantly move.Finding pressure anomaly in which tower, just when strippant moves to this tower, halt system runs.Now in tower, feed liquid refractive power is about 1%-2%, is almost all strippant, tower is isolated with other towers, does not affect the feed liquid index in other towers, rinse this tower with water, until pressure reduces.Realize especially by following steps:
In simulation moving bed, the pressure of knockout tower is with the impurity in the broken of resin and resin, and the clean level of distributor is relevant, and shredded resin and impurity once occur, will be enriched with in certain tower, causes individually certain pressure tower abnormal.Pressure gauge is arranged at top and the bottom of each separation chamber of simulation moving bed, the pressure differential of normal condition next top and bottom is 0.03MPa, when resin crushes or solid impurity occurs in feed liquid, separation chamber's pressure differential reaches 0.1MPa, the highest, the entrance foreign body of certain separation chamber or resin arise that the phenomenon that pressure reduction is higher when crushing.First after system stripping stage runs to the knockout tower that pressure is higher, (if desorption time is 500s when strippant will switch toward next knockout tower is interior, then at residue about 10s), stop this system, this knockout tower is isolated with other knockout towers, (assume it is to rinse 2# pillar, turning off 1# pillar ball valve, 3# pillar circulating valve, the structure of simulation moving bed is shown in Fig. 1 and Fig. 2), ensure the refractive power of feed liquid, printing opacity, conductance, pH value in other towers, and the content composition of material is constant.Open the 2# pillar air bleeding valve of this knockout tower, 2# pillar blowoff valve, 2# pillar ball valve will need rinse knockout tower within feed liquid (almost water) bleed off.It is then shut off 2# pillar air bleeding valve, intake from the bottom of 2# pillar, until pressure reaches 0.2mpa in tower, open 2# pillar air bleeding valve, thus have substantial amounts of air and gush out in air bleeding valve, resin in tower and distributor are purged by air, in time having liquid to flow out, close 2# pillar air bleeding valve, and 2# pillar blowoff valve is opened simultaneously, when the liquid clean free from admixture that blowoff valve flows out, clean complete.System recovery to running status, open automatic system, normally produce.
Resin in tower just can be cleaned without labor intensity, liftout and system cycle time by above method.In before the most important thing is not affect separation, constituent content is distributed.Clean the whole flow time in single separation chamber at about 70 minutes, substantially increase work efficiency.
Above embodiment illustrates that embodiment disclosed by the invention, can not be interpreted as limitation of the present invention.Additionally, various amendments listed herein and invention in method, the change of compositions, be apparent from for those skilled in the art without departing from the scope and spirit in the present invention.Although the multiple particular preferred embodiment having combined the present invention has carried out concrete description to the present invention, it is to be understood that, the present invention should not be limited only to these specific embodiments.It is true that various as above for those skilled in the art obvious amendment obtain invention and be intended to be included within the scope of this invention.
Claims (2)
1. simulate the method cleaning resin in moving bed for one kind, it is characterised in that comprise the steps:
(1) knockout tower that in detection simulation moving bed, pressure is higher；
(2) after system stripping stage runs to the knockout tower that described pressure is higher, before strippant enters next knockout tower, by institute
State the higher knockout tower of pressure to isolate with other knockout towers；
(3) feed liquid within knockout tower higher for described pressure is bled off；
(4) close air bleeding valve and the circulating valve of the higher knockout tower of described pressure, enter to solve bottom the knockout tower that described pressure is higher
Vapor, until pressure reaches 0.18-0.22MPa in tower；
(5) open the air bleeding valve of the higher knockout tower of described pressure, to there being liquid to flow out, close air bleeding valve；
(6) blowoff valve of the higher knockout tower of described pressure is opened, limpid without visible foreign to the liquid flowed out, transmittance >=
95%, clean complete；
The higher knockout tower of described pressure refers to that the top of knockout tower under operation is more than with the bottom pressure reduction of this knockout tower
The knockout tower of 0.03MPa.
2. method as claimed in claim 1, it is characterised in that described strippant is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510285912.2A CN104841163B (en) | 2015-05-29 | 2015-05-29 | A kind of simulate the method cleaning resin in moving bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510285912.2A CN104841163B (en) | 2015-05-29 | 2015-05-29 | A kind of simulate the method cleaning resin in moving bed |
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| Publication Number | Publication Date |
|---|---|
| CN104841163A CN104841163A (en) | 2015-08-19 |
| CN104841163B true CN104841163B (en) | 2016-09-21 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB201702856D0 (en) * | 2017-02-22 | 2017-04-05 | Ge Healthcare Bio Sciences Ab | Method in continuous chromatography |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6372127B1 (en) * | 2000-03-09 | 2002-04-16 | Daicel Chemical Industries, Ltd. | Simulated moving bed separation system |
| CN101972558B (en) * | 2010-11-30 | 2013-01-02 | 顾雄毅 | Expanded bed chromatographic separation column used for biochemical separation process and process flow |
| US9017558B2 (en) * | 2011-12-15 | 2015-04-28 | Uop Llc | System and process for recovering products using simulated-moving-bed adsorption |
| CN102824758B (en) * | 2012-08-24 | 2015-01-07 | 安徽丰原发酵技术工程研究有限公司 | System and method for separating paracetamol by simulated moving bed chromatography |
| CN203483914U (en) * | 2013-08-16 | 2014-03-19 | 齐鲁工业大学 | Simulated moving bed for separating and purifying trehalose and glucose |
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