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Sequential simulated moving bed

A simulated moving bed, sequential technology, applied in the direction of chemical instruments and methods, separation methods, solid adsorbent liquid separation, etc., can solve the problems that the equipment cannot operate automatically, cannot switch working modes, etc., to avoid poor circulation, avoid The effect of blockage of circulation and avoidance of accumulation

Active Publication Date: 2011-01-12
西安航天华威化工生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a sequential simulated moving bed with a high degree of automation to solve the problems in the technical field of existing separation equipment that the equipment cannot operate automatically and cannot switch working modes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] When the 8-column system is running, open the V-column manual valve 16 and VII-column manual valve 17. Start the raw material pump 5 and the washing water pump 6, and at the same time, the automatic control system controls the I column feed valve 24, the V column water inlet valve 25, the VI column extract liquid outlet valve 26, the III column raffinate outlet valve 27, and the I column circulation pneumatic valve 28. Pneumatic valve 28 for column II circulation and pneumatic valve 28 for column V are opened, and the rest of the valves are closed. At this time, No. I chromatographic column 8 feeds material, and the feed flow rate is 14 L / H. No. II chromatographic column 9 enters water for elution. It is 13L / H, the outlet of No. III chromatographic column 10 exits the raffinate, enters the raffinate tank 23, the exit of No. VI chromatographic column 13 exits the extract, enters the extract tank 22, the feeding time and eluent feeding time are 300S Finally, the raw mater...

Embodiment 2

[0026] When the 4-column system is running, the automatic control system closes the manual valve 16 of the column V and the manual valve 17 of the column VII. Start the raw material pump 5 and the washing water pump 6, the automatic control system controls the I column feed valve 24, the III column water inlet valve 25, the III column extract liquid outlet valve 26, the I column raffinate outlet valve 27 to open, and the other valves to close. When No. I chromatographic column 8 feeds, No. III chromatographic column 10 enters water for elution, the outlet of No. I chromatographic column 8 exits the raffinate, enters the raffinate tank 23, and No. III chromatographic column 10 exits the extract solution, enters the extraction The liquid tank 22, the feeding time, the eluent feeding time and the switch of the pneumatic valve before and after this step are controlled by the automatic control system. Then, the raw material pump 5 and the washing water pump 6 are closed, and the au...

Embodiment 3

[0029] Before the 6-column system runs, first, the automatic control system opens the V-column manual valve 16, closes the VII-column manual valve 17, and switches the 4-column system into a 6-column system. When the system is running, at first, start the raw material pump 5 and the washing water pump 6, and the automatic control system controls the I column feed valve 24, the V column water inlet valve 25, the V column extract liquid outlet valve 26, the II column raffinate outlet valve 27, I column circulation pneumatic valve 28 is opened, and other valves are closed. At this time, No. I chromatographic column 8 feeds material, V No. chromatographic column 12 enters water for elution, and No. II chromatographic column 9 exits the raffinate, which enters the raffinate tank 23 , No. Ⅴ chromatographic column 12 exits extracting liquid, enters extracting liquid tank 22, feed time, enter eluent time and the switch of pneumatic valve before and after this step are controlled by com...

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Abstract

The invention relates to a sequential simulated moving bed. The simulated moving bed is mass transfer equipment which carries out liquid separation by utilizing an adsorption principle and is widely applicable to various production fields of petroleum, fine chemicals, biology, medicine, food and the like, and the existing simulated moving bed can not adopt a manual mode to open a valve and is usually of a monomer structure, namely a single moving bed of 4 columns or 6 columns, which can not switch among various working conditions. The sequential simulated moving bed utilizes circulating pumps arranged between two adjacent chromatographic columns to push materials to pass through the chromatographic columns, thus avoiding accumulation; the circulation of a raw material tank can avoid a circulation blocking phenomenon of a pipeline; from a chromatographic column III, feed ports of the chromatographic columns of odd numbers are provided with manual valves, and flexible switching among various working conditions of 4 columns, 6 columns or 8 columns can be carried out; and the valves of the chromatographic columns can be flexibly controlled by an automatic control system. The sequential simulated moving bed has the characteristics of having high automatic control degree and good separation effect and being capable of realizing flexible switching among various working conditions.

Description

technical field [0001] The invention relates to the technical field of separation equipment, in particular to a sequential simulated moving bed. Background technique [0002] Simulated moving bed chromatographic separation technology is a modern separation technology developed in the 1960s. Its application scope involves many production fields such as petroleum, fine chemical industry, biology, medicine, food, etc., especially in homologous compounds and chiral isomer drugs. It shows its unique performance in the separation of mixtures such as , sugars, organic acids and amino acids. In the field of separation of sugar alcohols, the separation of fructose and glucose by simulated moving bed chromatography is currently the best method. At present, there is a complete set of commercial equipment with an annual output of 10,000 tons of fructose in foreign countries. my country has just started research in this area as early as the 1980s, but it has not been able to produce thi...

Claims

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Application Information

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IPC IPC(8): B01D15/18
Inventor 尚立伟赵仕哲杨鹏梁恺成栋胡建军李雄
Owner 西安航天华威化工生物工程有限公司
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