Membrane separation system and purification method for purifying camphorsulfonic acid solution

A technology of membrane separation system and camphorsulfonic acid solution, which is applied in the membrane separation system and purification field of purifying camphorsulfonic acid solution, can solve the problems of high processing cost, easy deterioration and loss of materials, and achieve low energy consumption, simple maintenance, The effect of reducing operating costs

Active Publication Date: 2012-04-25
ZHEJIANG YUNTAO BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The concentration section of camphorsulfonic acid solution in the production process of D(-)phenylglycine is usually treated by evaporation process to remove excess water in boiling state. Not only the processing cost is high, but also the material is easy to deteriorate and lose in the high temperature state for a long time.

Method used

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  • Membrane separation system and purification method for purifying camphorsulfonic acid solution
  • Membrane separation system and purification method for purifying camphorsulfonic acid solution

Examples

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Embodiment 1

[0020] Take the first membrane separation system for purification, take 10000L of 7% camphorsulfonic acid solution and transport it to the first-stage 0.05um cellulose acetate roll-type ultrafiltration membrane module through a high-pressure pump, control the pump outlet pressure to 0.8Mpa, intercept and separate camphorsulfonic acid A small amount of polymer aggregates and solid suspended matter in the mother liquor, the pre-purified camphorsulfonic acid mother liquor enters the secondary 8nm cellulose acetate roll-type nanofiltration membrane module, separates the camphorsulfonic acid concentrated solution with a molecular weight of 232, and enters the mother liquor In the collection tank, the dilute liquid continues to be pumped into the third-stage 3nm cellulose acetate roll-type nanofiltration membrane module, the separated dilute liquid is discharged from the membrane separation system, and the concentrated liquid is returned to the secondary membrane to continue concentra...

Embodiment 2

[0022] Take the second membrane separation system for purification, take 10,000L of 6% camphorsulfonic acid solution and transport it to the first-stage 0.03um polyethersulfone tubular ultrafiltration membrane module through a high-pressure pump, control the pump outlet pressure to 0.9Mpa, and intercept and separate camphorsulfonic acid A small amount of polymer aggregates and solid suspended matter in the mother liquor, the pre-purified camphorsulfonic acid mother liquor enters the secondary 10nm polyethersulfone nanofiltration membrane module, separates the camphorsulfonic acid concentrated solution with a molecular weight of 232, and enters the mother liquor collection tank , the dilute liquid continues to be pumped into the third-stage 5nm polyethersulfone tubular nanofiltration membrane module, the separated dilute liquid is discharged from the membrane separation system, and the concentrated liquid is returned to the second-stage membrane to continue concentration and sepa...

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Abstract

The invention relates to a membrane separation system and a purification method for purifying camphorsulfonic acid solution. At present, an evaporation process is generally used for purifying the camphorsulfonic acid solution, which removes redundant water in a boiled state; and thus, the processing cost is relatively high, and the material is easily deteriorated and lost after staying in high-temperature state for a long time. In the invention, large particle impurities in a mother solution are filtered by a first-level separation membrane; a thin solution and a thick solution are separated by a second-level concentration membrane; the thin solution separated by the second-level concentration membrane enters a third-level concentration membrane and is recycled; the thick solution separated by the third-level concentration membrane is returned to the second-level concentration membrane again; the thick solution discharged by the second-level concentration membrane is the finished product; and the thin solution separated by the third-level concentration membrane is directly discharged out of the membrane separation system. The invention provides a physical separation process without phase change and with low energy consumption. Through the invention, the energy consumption is low, the operation cost is reduced, and atmospheric pollution is prevented as the entire membrane separation system operates in a closed pipeline.

Description

technical field [0001] The invention belongs to equipment and methods for concentrating and purifying organic matter in the fine chemical industry, in particular to a membrane separation system and a purification method for purifying camphorsulfonic acid liquid. Background technique [0002] The concentration section of camphorsulfonic acid solution in the production process of D(-)phenylglycine is usually treated by evaporation process to remove excess water in a boiling state. Not only the processing cost is high, but also the material is prone to deterioration and loss under high temperature for a long time. Contents of the invention [0003] Aiming at the defects in the prior art, the invention provides a membrane separation system and a purification method for purifying camphorsulfonic acid liquid, which can effectively reduce production costs and energy consumption, and ensure the quality of finished products. [0004] For this reason, the present invention takes fol...

Claims

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Application Information

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IPC IPC(8): B01D61/58C07C303/44C07C309/25
Inventor 朱运涛赵磊江晓明许涛
Owner ZHEJIANG YUNTAO BIOTECH
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