CN203220780U - Frequency-conversion pressure-control flow-control sequentially simulated moving bed - Google Patents
Frequency-conversion pressure-control flow-control sequentially simulated moving bed Download PDFInfo
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- CN203220780U CN203220780U CN 201320278239 CN201320278239U CN203220780U CN 203220780 U CN203220780 U CN 203220780U CN 201320278239 CN201320278239 CN 201320278239 CN 201320278239 U CN201320278239 U CN 201320278239U CN 203220780 U CN203220780 U CN 203220780U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 18
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Abstract
The utility model belongs to the field of chromatograph separating devices used for mixed liquid isolation and purification and particularly relates to a frequency-conversion pressure-control flow-control sequentially simulated moving bed. The frequency-conversion pressure-control flow-control sequentially simulated moving bed is a loop system composed of a plurality of valves, a plurality of columns and a plurality of pumps, wherein the valves, the columns and the pumps are connected in series. Each chromatographic column is provided with a switch auto-control valve controlling two feeding liquid flows and product output and is additionally provided with a set of chromatograph separating devices combined through feeding devices and product output devices. Instant and automatic pressure control of two feeding liquid flows and instant and automatic flow control of product circulation and output are achieved, so that system stability is achieved. According to the technical scheme, instant pressure control and instant flow control are adopted, so that the stability of pressure and the stability of flow of the system are guaranteed at any time. Pressure control and flow control are achieved through pump frequency modulation, so that full load operation of the pumps is basically not needed, noise is low, operation is stable, the service life of the pumps is prolonged, and the characteristics of a moving bed is simulated in sequence. If the pumps are not used for a period, more power is saved. The direct volume flow accumulation is adopted to conduct sequential switching among steps, so that interference factors existing when time switch is conducted are eliminated and control is more accurate.
Description
Technical field
The utility model belongs to and separates and the chromatographic separation device field of purification mixing material, and it is simulation moving-bed to relate in particular to frequency conversion pressure control control amount order.
Background technology
Simulated moving bed technology separates industrial applications as far back as the dimethylbenzene of the American UOP company sixties in petrochemical industry, it is made up of 24 2 outlet pumps of Se Pu Zhu ﹑ and one 24 logical rotary distributor, its liquid flow distribution is to be finished by 24 logical rotary distributors, thereby reaches the mobile purpose of simulation.But 24 logical rotary distributor cost height in this technology, manufacture difficulty is big, and the seventies, toray company had many valves of 24 chromatographic columns of 144 valves simulation moving-bed again afterwards, and it is simulation moving-bed that the nineties, Korea S released many valves of 24 chromatographic columns of 120 valves again.Many valves technology is without rotary valve, and installation cost is low, starts easily.No matter be the simulation moving-bed of many valves or rotary valve, the essence result during its operation is the same.Occurred sequential simulated moving bedly in recent years again, from the overall appearance flow process, sequential simulated moving bed and many valves are simulation moving-bed similar.Certain liquid glucose of sequential simulated moving bed separation of present four or six chromatographic columns has just reached the level with 24 chromatographic columns of traditional analog moving bed, compare with traditional handicraft, sequential simulated moving bed processing material concentration height, amount is big, few with amount of eluent, its product design height, and the product purity yield is also high.Because used chromatographic column is few, equipment investment is few, and advantage is many again, and existing this technology is approved by most of people that sequential simulated moving bed advantage is many, but is not perfect in every way.Its also exist many can improved weak point.Problem one, the sequential simulated moving bed most of the time is not feed liquor miscarriage and not product owing to be in operation, but the pump of two feeding liquid streams is full load operation always really, its most of the time is to flog a dead horse, not only waste electric energy, noise is big, and is also unfavorable to the pump life-span, and this is the big unfavorable factor that traditional control valve is regulated.Problem two, the control of pressure and flow is had plenty of with volumetric metering pump and is delivered into feed liquid stream, the pressure maintaining valve voltage stabilizing of output product.The process of operation is after reserving the pressure of the amount of volumetric metering pump and pressure maintaining valve earlier, bring into operation, be to control automatically in the running, be subjected to the factor affecting such as Nian Du ﹑ Mi Du ﹑ of Wen Du ﹑ Ya Li ﹑ Dian Ya ﹑ material but be in operation, its flow fluctuates, and looks up and down when big because of certain factor pump, and the product pressure maintaining valve is just put more, amount hour is just put less, and the result can not guarantee the steady flow of liquid stream.The outlet pump was all changing at any time because of liquid current density and the viscosity of carrying when particularly circulation went on foot, and it is bigger to the influence of flow volume delivery stability.Problem three, sequential simulated moving bedly move with volume, but have plenty of with the time and carry out switching between order step, volume is direct parameter, and the time is to calculate the indirect parameter of coming by volume, originally instantaneous inaccurate with regard to the control amount, switch just more difficult accurate again with the indirect parameter control sequence step.
The utility model content
The utility model is intended at the deficiency that exists in the background technology, and a kind of frequency conversion pressure control control amount order that provides is simulation moving-bed.
Frequency conversion pressure control control amount order of the present utility model is simulation moving-bed, be by more than one chromatographic column, each chromatogram column outlet pump and outlet valve constitute, head and the tail pipeline connection between the more than one chromatographic column, on the pipeline between two adjacent chromatographic columns, be communicated with outlet pump and outlet valve successively, the entrance of each chromatographic column pipeline connection respectively strippant autocontrol switch valve, raw material autocontrol switch valve, the pipeline of strippant charging aperture is communicated with each strippant autocontrol switch valve, the pipeline of material inlet is communicated with each raw material autocontrol switch valve, pipeline branch road b between each outlet pump and the outlet valve is equipped with product raffinate B autocontrol switch valve and mutual pipeline connection, branch road c is equipped with product raffinate C autocontrol switch valve and mutual pipeline connection, branch road a is equipped with product extract A autocontrol switch valve and mutual pipeline connection, is connecting product extract A outlet at the pipeline of branch road a, connecting on the pipeline of branch road b and be connected product raffinate C on the pipeline of product raffinate B outlet and branch road c and export.
As further improvement of the utility model, strippant charging aperture place is provided with strippant jar, strippant pressure control variable frequency pump, pressure transmitter, autocontrol switch valve and limiting switch valve, and successively head and the tail pipeline connection; The material inlet place is provided with pressure transmitter, autocontrol switch valve, limiting switch valve, head tank, raw material pressure control variable frequency pump, and head and the tail pipeline connection successively.
As further improvement of the utility model, described outlet pump is variable frequency pump.
As further improvement of the utility model, be equipped with flow transmitter and counterbalance valve on the pipeline of described product extract A outlet, product raffinate B outlet and product raffinate C outlet.
Frequency conversion pressure control control amount order of the present utility model is simulation moving-bed, its two feeding liquids stream can be accomplished instantaneous automatic pressure control, internal circulating load and product output can be accomplished instantaneous automatic control flow, guaranteed the stability of operating pressure all the time and flow, low discharge operation and shutdown pump in going on foot about order, the strippant pump can be economized 60% electric energy as a result, and the raw material pump can be economized greater than 60% electric energy; Two feeding liquid stream pump frequency modulation, Bu Full load operation, noise is low, the long environmental protection again of pump life-span; Frequency modulation control amount has been saved control valve, and reduce at the control point, and controlled quentity controlled variable is more accurate, and system is more stable.Accomplish it namely is that the outlet pump is again accent amount pump, the result is the many usefulness of a pump, and equipment is to take full advantage of in the device; Direct volume cumulative amount parameter is adopted in the switching of order between the step, to making switching more accurate.Because pump frequency modulation loop Kong Ya ﹑ pump frequency modulation circulation Kong Liang ﹑ product output pump frequency modulation control amount, change ﹑ to a plurality of improvement technical schemes such as the low discharge of two charging pumps and terminations of pumping with cutting of volume cumulative amount control sequence step, gentle to the total system operation, pressure and stability of flow, control accuracy improves, and yield and the purity of product also improve.
Description of drawings
Fig. 1 is system of the present utility model whole process schematic diagram;
Fig. 2 is the circulation step of the present utility model;
Fig. 3 singly advances singly to go out the step for of the present utility model;
Fig. 4 is the all-in and all-out step of the present utility model.
The specific embodiment
Frequency conversion pressure control control amount order of the present utility model is simulation moving-bed, be by more than one chromatographic column 1, each chromatographic column 1 outlet pump 2 and outlet valve 3 constitute, head and the tail pipeline connection between its more than one chromatographic column 1, on the pipeline between two adjacent chromatographic columns 1, be communicated with outlet pump 2 and outlet valve 3 successively, the entrance of each chromatographic column 1 pipeline connection respectively strippant autocontrol switch valve 4, raw material autocontrol switch valve 5, the pipeline of strippant charging aperture 9 is communicated with each strippant autocontrol switch valve 4, the pipeline of material inlet 10 is communicated with each raw material autocontrol switch valve 5, pipeline branch road b between each outlet pump 2 and the outlet valve 3 is equipped with product raffinate B autocontrol switch valve 6 and mutual pipeline connection, branch road c is equipped with product raffinate C autocontrol switch valve 7 and mutual pipeline connection, branch road a is equipped with product extract A autocontrol switch valve 8 and pipeline connections mutually, is connecting product extract A outlet 11 at the pipeline of branch road a, connecting on the pipeline of branch road b on the pipeline of product raffinate B outlet 13 and branch road c and be connected product raffinate C outlet 12.Strippant charging aperture 9 places are provided with strippant jar 14, strippant pressure control variable frequency pump 15, pressure transmitter 16-1, autocontrol switch valve 17-1 and limiting switch valve 18-1, and successively head and the tail pipeline connection; Material inlet 10 places are provided with pressure transmitter 16-2, autocontrol switch valve 17-2, limiting switch valve 18-2, head tank 19, raw material pressure control variable frequency pump 20, and head and the tail pipeline connection successively.Described outlet pump 2 is variable frequency pump; Be equipped with flow transmitter 21 and counterbalance valve 22 on the pipeline of described product extract A outlet 11, product raffinate B outlet 13 and product raffinate C outlet 12.
Fig. 1 is to be the simulation moving-bed whole process schematic diagram of the utility model frequency conversion pressure control control amount order.Among Fig. 1 as seen, the external pump of each chromatographic column is the same entirely with valve, the traditional analog moving bed is with certain hour chromatographic column operation one by one, and sequential simulated moving bed be to carry out chromatographic column operation one by one with the order step of an intermittence conversion ginseng different mechanism, general order is to follow ring step ﹑ singly to advance singly to go out three steps of ﹑ all-in and all-out and finish.Which chromatographic column that arrives in service is just opened by the autocontrol switch valve of computer programming software control correspondence, and each step cooperates two feeding liquids stream loop pressure controls, exports pump frequency modulation control amount and product output pump frequency modulation control amount and just can normally move.Among Fig. 1, the 1st, chromatographic column, the 2nd, outlet pump, the 3rd, outlet valve, the 4th, strippant autocontrol switch valve, the 5th, raw material autocontrol switch valve, the 6th, product raffinate B autocontrol switch valve, the 7th, product raffinate C autocontrol switch valve, the 8th, product extract A autocontrol switch valve, the 9th, strippant charging aperture, the 10th, material inlet, the 11st, product extract A, the 12nd, product raffinate C, the 13rd, product raffinate B.
Simulation moving-bed to frequency conversion pressure control control amount order of the present utility model below in conjunction with accompanying drawing 2-4, be described further, the utility model is example with six chromatographic columns: its accompanying drawing mark is as follows: chromatographic column (is divided into 1-1 to 1-6, six of sums; ) 2, outlet pump (be divided into 2-1 to 2-6, total six); 3, outlet valve (being divided into 3-1 to 3-6,6 of sums); 4, strippant autocontrol switch valve (being divided into 4-1 to 4-6,6 of sums); 5, raw material autocontrol switch valve (being divided into 5-1 to 5-6,6 of sums); 6, product raffinate B autocontrol switch valve (being divided into 6-1 to 6-6,6 of sums); 7, product raffinate C autocontrol switch valve (being divided into 7-1 to 7-6,6 of sums); 8, product extract A autocontrol switch valve (being divided into 8-1 to 8-6,6 of sums); 9, strippant charging aperture; 10, material inlet; 11, product extract A; 12, product raffinate C; 13, product raffinate B; 14, strippant jar; 15, strippant pressure control variable frequency pump; 16, pressure transmitter (being divided into 16-1 to 16-2,2 of sums); 17, autocontrol switch valve (being divided into 17-1 to 17-2,2 of sums); 18, limiting switch valve (being divided into 18-1 to 18-2,2 of sums); 19, head tank; 20, raw material pressure control variable frequency pump; 21, flow transmitter (being divided into 21-1 to 21-4,4 of sums); 22, counterbalance valve (being divided into 22-1 to 22-3,3 of sums).
Fig. 2 is the description of circulation step technical application scheme: the circulation step is exactly that six outlet valves of six Se Pu Zhu ﹑, six outlets Beng ﹑ are connected into a loop and carry out the liquid circulation.The motive force of circulation fluid is finished by 2-2 outlet pump.Form the internal circulating load automatic control system by circulation frequency conversion outlet pump 2-2 and flow transmitter 21-1.Circular flow control is by flow transmitter 21-1 flow signal to be delivered to computer, exporting FM signal by computer is the output quantity that target is regulated frequency conversion outlet pump 2-2 with given flow parameter, accomplish the moment traffic monitoring, reach the output of stable circulation flow.The lower part heavy line is the liquid stream route of flowing through among Fig. 2, and the outlet valve of its route of flowing through is all opened, and strippant autocontrol switch valve 4-1 opens to the chromatogram column system ftercompction, does not have flow substantially, the autocontrol switch valve Close All of other turnover chromatogram column system.Because computer is at every moment monitored circular flow, its volume cumulative amount accuracy height is parameter with this volume cumulative amount just when switching to next step, and it is more accurate that control is switched.This moment, strippant and raw material did not advance chromatogram column system, the operation of two liquid stream loop backflow pressure control.
Fig. 2 top is two feeding liquids stream loop pressure control flow process, the control of strippant loop pressure is formed control pressure system by strippant jar 14 ﹑ strippant pressure control variable frequency pumps, 15 ﹑ pressure transmitter 16-1 ﹑ autocontrol switch valve 17-1 and limiting switch valve 18-1, and the outlet of pressure control loop links to each other with the strippant autocontrol switch valve 4-1 that advances of chromatographic column loop.The pressure control of strippant loop is by pressure transmitter 16-1 pressure signal to be delivered to computer, exporting FM signal by computer is the output quantity that target is regulated strippant pressure control variable frequency pump 15 with the setting pressure parameter, thereby stablize loop pressure, at this moment main flow is walked loop and is reentered strippant jar 14(heavy line and be the liquid stream route of flowing through), autocontrol switch valve 17-1 opens, and limiting switch valve 18-1 limits the quantity of.Flow was little a lot of when this moment, loop traffic can be than the chromatographic column charging, and the pump operation gentleness is economized on electricity again.Because chromatogram column system is wanted ftercompction, so the strippant variable frequency pump will move always.
The control of stock loop pressure is formed control pressure system by head tank 19 ﹑ raw material pressure control variable frequency pumps, 20 ﹑ pressure transmitter 16-2 ﹑ autocontrol switch valve 17-2 and limiting switch valve 18-2, and the outlet of loop links to each other with the raw material autocontrol switch valve 5 of chromatographic column loop.The pressure control of stock loop is by pressure transmitter 16-2 pressure signal to be delivered to computer, is the output quantity that target is regulated raw material pressure control variable frequency pump 20 by computer output FM signal with the setting pressure parameter, thereby stablizes loop pressure.Do not advance raw material in the circulation step with singly advancing singly to go out to go on foot chromatographic column, so flow was little a lot of when stock loop flow in service can advance raw material than chromatographic column, at this moment whole flows are walked loop and are reentered head tank (heavy line flow through for liquid stream route), autocontrol switch valve 17-2 opens, and limiting switch valve 18-2 limits the quantity of.Because chromatogram column system had 60% above time not advance raw material during sequential simulated moving bed operation, so this loop can a period of time out of service, but to note start-up time, with the assurance system pressure.This step is carried out the order switching in step with circulating fluid accumulation metering.
Fig. 3 is for singly advancing the description that singly goes out to go on foot the technical application scheme: singly advancing and singly going out the step (only advancing strippant and output product raffinate B) is to advance strippant in chromatographic column, and it flows through output raffinate B product after five chromatographic columns, and Fig. 3 is flow process when operating in the 1-1 chromatographic column.This step strippant loop pressure control is formed control pressure system by strippant jar 14 ﹑ strippant pressure control variable frequency pump 15 ﹑ pressure transmitter 16-1 and autocontrol switch valve 17-1, the pressure control of strippant loop is by pressure transmitter 16-1 pressure signal to be delivered to computer, exporting FM signal by computer is the output quantity that target is regulated strippant pressure control variable frequency pump 15 with the setting pressure parameter, thereby stablize loop pressure, at this moment whole flows enter chromatogram column system, strippant autocontrol switch valve 4-1 opens, and this loop autocontrol switch valve 17-1 closes.The strippant loop pressure is stabilized in set-point.This step, raw material pressure control loop was identical with the circulation step because do not advance raw material.
The control amount of raffinate B product is formed automatic control system by variable frequency pump 2-5(outlet pump) ﹑ raffinate B autocontrol switch valve 6-5 ﹑ flow transmitter 21-2 and counterbalance valve 22-1.21-2 delivers to computer with flow signal by flow transmitter, be the target output quantity of regulating variable frequency pump 2-5 (heavy line be liquid stream flow through route) by computer output FM signal with given flow parameter, the route valve of flowing through is opened, and other valve cuts out, thus stable output raffinate B product.This step also is to carry out the order switching in step with raffinate B volume cumulative amount.
Fig. 4 is the description of all-in and all-out step technical application scheme: the all-in and all-out step, (two feeding liquid streams all advanced chromatogram column system, two output products are all drawn) be into strippant through a chromatographic column output product extract A, advance raw material through two chromatographic column output product raffinate C, because the effect of each section is different in the chromatographic column, what strippant and raw material advanced is the different parts of chromatographic column.
Extract A product control amount is formed automatic control system by variable frequency pump 2-1(outlet pump) ﹑ extract A autocontrol switch valve 8-1 ﹑ flow transmitter 21-4 and counterbalance valve 22-3.It at first is by flow transmitter 21-4 flow signal to be delivered to computer, be the output quantity that target is regulated outlet pump 2-1 by computer output FM signal with given flow parameter, thus stable output extract product (Fig. 4 left side heavy line flow through for liquid stream route).
Raffinate C product control amount is formed automatic control system by variable frequency pump 2-5(outlet pump) ﹑ raffinate C autocontrol switch valve 7-5 ﹑ flow transmitter 21-3 and counterbalance valve 22-2.It at first is by flow transmitter 21-3 flow signal to be delivered to computer, be the output quantity that target is regulated variable frequency pump 2-5 by computer output FM signal with given flow parameter, thus stable output raffinate C product (Fig. 4 the right heavy line flow through for liquid stream route).The heavy line route valve of flowing through is opened, and other valve cuts out.Can carry out the order switching in step after this step raffinate B volume cumulative amount and extract A volume cumulative amount is all up to standard.
The pressure control of this step strippant loop is by pressure transmitter 16-1 pressure signal to be delivered to computer, exporting FM signal by computer is the output quantity that target is regulated strippant pressure control variable frequency pump 15 with the setting pressure parameter, thereby stablize loop pressure, at this moment whole flows enter chromatogram column system, strippant autocontrol switch valve 4-1 opens, and autocontrol switch valve 17-1 closes.Strippant loop pressure in service is stabilized in set-point.The pressure control of this step raw material pressure control loop is by pressure transmitter 16-2 pressure signal to be delivered to computer, exporting FM signal by computer is the output quantity that target is regulated raw material pressure control variable frequency pump 20 with the setting pressure parameter, thereby stablize loop pressure, at this moment whole flows enter chromatogram column system, raw material autocontrol switch valve is beaten 5-4 and is opened, and this loop autocontrol switch valve 17-2 closes.Stock loop pressure stability in service is at set-point.
Figure 2 ﹑ Fig. 3 and Fig. 4 are the liquid stream in ginseng the order step when the 1-1 chromatographic column routes of flowing through, and switch in proper order with this.Next process is the same sequential process of 1-2 chromatographic column, and by that analogy, chromatographic column operation one by one switched for 18 steps altogether to the 1-6 chromatographic column, and then repeated identical running from the 1-1 chromatographic column.
Claims (4)
1. frequency conversion pressure control control amount order is simulation moving-bed, be by more than one chromatographic column (1), each chromatographic column (1) outlet pump (2) and outlet valve (3) constitute, it is characterized in that head and the tail pipeline connection between the more than one chromatographic column (1), on the pipeline between adjacent two chromatographic columns (1), be communicated with outlet pump (2) and outlet valve (3) successively, the entrance of each chromatographic column (1) pipeline connection respectively strippant autocontrol switch valve (4), raw material autocontrol switch valve (5), the pipeline of strippant charging aperture (9) is communicated with each strippant autocontrol switch valve (4), the pipeline of material inlet (10) is communicated with each raw material autocontrol switch valve (5), pipeline branch road b between each outlet pump (2) and the outlet valve (3) is equipped with product raffinate B autocontrol switch valve (6) and mutual pipeline connection, branch road c is equipped with product raffinate C autocontrol switch valve (7) and mutual pipeline connection, branch road a is equipped with product extract A autocontrol switch valve (8) and mutual pipeline connection, is connecting product extract A outlet (11) at the pipeline of branch road a, connecting on the pipeline of branch road b and be connected product raffinate C on the pipeline of product raffinate B outlet (13) and branch road c and export (12).
2. frequency conversion pressure control control amount order as claimed in claim 1 is simulation moving-bed, it is characterized in that strippant charging aperture (9) locates to be provided with strippant jar (14), strippant pressure control variable frequency pump (15), pressure transmitter (16-1), autocontrol switch valve (17-1) and limiting switch valve (18-1), and head and the tail pipeline connection successively; Material inlet (10) locates to be provided with pressure transmitter (16-2), autocontrol switch valve (17-2), limiting switch valve (18-2), head tank (19), raw material pressure control variable frequency pump (20), and head and the tail pipeline connection successively.
3. frequency conversion pressure control control amount order as claimed in claim 1 or 2 is simulation moving-bed, it is characterized in that described outlet pump (2) is variable frequency pump.
4. frequency conversion pressure control control amount as claimed in claim 1 or 2 order is simulation moving-bed, it is characterized in that described product extract A outlet (11), product raffinate B outlet (13) and product raffinate C export on the pipeline of (12) to be equipped with flow transmitter (21) and counterbalance valve (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320278239 CN203220780U (en) | 2013-05-21 | 2013-05-21 | Frequency-conversion pressure-control flow-control sequentially simulated moving bed |
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| CN 201320278239 CN203220780U (en) | 2013-05-21 | 2013-05-21 | Frequency-conversion pressure-control flow-control sequentially simulated moving bed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667575A (en) * | 2014-09-25 | 2015-06-03 | 宁波拓谱生物科技有限公司 | Intelligent ultrahigh-pressure micro simulation moving bed chromatographic instrument |
| CN108187766A (en) * | 2018-03-02 | 2018-06-22 | 中触媒新材料股份有限公司 | A kind of multicolumn series connection automatic control ion interchange unit and method |
| CN110665256A (en) * | 2019-10-08 | 2020-01-10 | 中国科学院过程工程研究所 | Simulated moving bed device and method for separating multicomponent dihydric alcohol |
| WO2020098295A1 (en) * | 2018-11-14 | 2020-05-22 | 内蒙古伊泰煤基新材料研究院有限公司 | High-performance simulated moving bed device and high-performance simulated moving bed technique |
-
2013
- 2013-05-21 CN CN 201320278239 patent/CN203220780U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667575A (en) * | 2014-09-25 | 2015-06-03 | 宁波拓谱生物科技有限公司 | Intelligent ultrahigh-pressure micro simulation moving bed chromatographic instrument |
| CN108187766A (en) * | 2018-03-02 | 2018-06-22 | 中触媒新材料股份有限公司 | A kind of multicolumn series connection automatic control ion interchange unit and method |
| CN108187766B (en) * | 2018-03-02 | 2023-11-03 | 中触媒新材料股份有限公司 | Multi-column serial connection self-control ion exchange device and method |
| WO2020098295A1 (en) * | 2018-11-14 | 2020-05-22 | 内蒙古伊泰煤基新材料研究院有限公司 | High-performance simulated moving bed device and high-performance simulated moving bed technique |
| US11980833B2 (en) | 2018-11-14 | 2024-05-14 | Inner Mongolia Yitai Coal-Based New Materials Research Institute Co., Ltd. | Efficient simulated moving bed device and efficient simulated moving bed process |
| CN110665256A (en) * | 2019-10-08 | 2020-01-10 | 中国科学院过程工程研究所 | Simulated moving bed device and method for separating multicomponent dihydric alcohol |
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