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Continuous ion exchange unit for organic acid production

A continuous ion and exchange device technology, applied in ion exchange treatment device, ion exchange, ion exchange column/bed method, etc., can solve the problems of low utilization rate of ion exchange resin, long operation cycle of a single batch, and many equipment, pipelines and valves.

Active Publication Date: 2012-12-12
SUNRESIN NEW METERIALS CO LTD XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment generally used in the existing ion exchange system is a fixed bed, which is a batch operation. The exchange and regeneration are carried out sequentially in the same bed. The single batch operation cycle is long and discontinuous, and the utilization rate of ion exchange resin is low. There are many valves in the pipeline and the labor intensity is high, the consumption of chemical reagents is large, it is uneconomical, and the discharge of waste water is large, etc.

Method used

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  • Continuous ion exchange unit for organic acid production
  • Continuous ion exchange unit for organic acid production

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment is the process of removing cations from lactic acid. Using the method and device of the present invention, the feed liquid to be treated is the feed liquid after the second activated carbon decolorization of lactic acid production, with a concentration of 18%-19%, and a viscosity of 1.05cP-1.10cP. The temperature is 30-40°C, the ion exchange resin is a gel-type strong acid cation exchange resin, using seplite LSI-010 produced by Xi'an Lanxiao Technology Co., Ltd., the exchange time is 2h, and the feed flow rate is controlled at 5-10m 3 / h. The regenerant uses 4-7% hydrochloric acid solution, and the amount of regenerant is 1-3 times the volume of the resin bed. The cation removal rate of the product can reach more than 98%, and the product yield can reach more than 99%.

Embodiment 2

[0037] This embodiment is the process of removing anions from lactic acid. Using the method and device of the present invention, the feed liquid to be treated is the feed liquid after removing cations, with a concentration of 17.5%-18.5%, a viscosity of 1.05cP-1.10cP, and a temperature of 30-40°C. , The ion exchange resin is a macroporous weak base anion exchange resin, using seplite LSI-363 produced by Xi'an Lanxiao Technology Co., Ltd., the exchange time is 3h, and the feed flow rate is 8-12m 3 / h. The regenerant uses 5-7% alkali solution, and the amount of regenerant is 1-3 times the volume of the resin bed. The anion removal rate of the product can reach more than 98%, and the product yield can reach more than 99%.

Embodiment 3

[0039]The present embodiment is the process of removing cations and anions by citric acid. Using the method and device of the present invention, the feed liquid to be treated is 20%-22% citric acid solution, pH: 1-2. The ion exchange resin is a macroporous strong acid cation exchange resin, which is seplite D001 produced by Xi'an Lanxiao Technology Co., Ltd., and converted to H+ type with 4% Hcl before use. The exchange time is 3 hours, and the flow rate is controlled at 8-10m 3 / h.

[0040] In the exchange process of the present invention, the resin can all reach the industrial saturated exchange, and the exchange capacity of the resin can be fully utilized. The exchange regeneration process is carried out continuously, and the exchange regeneration is not carried out in the same bed, the utilization rate of the resin is increased by 30-50%, and the regeneration agent is saved. 50-60%, the discharge of waste liquid is reduced, and the pressure on environmental protection is ...

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Abstract

The invention relates to a continuous ion exchange unit for organic acid production, comprising resin, at least three resin columns, feeding main pipes communicated with the upper ends of the resin columns and discharging main pipes communicated with the lower ends of the resin columns, wherein the feeding main pipes include a liquid feeding main pipe, an elution feeding main pipe and a regeneration feeding main pipe; the discharging main pipes include a liquid discharging main pipe, an elution discharging main pipe and a regeneration discharging main pipe; each resin column is respectively provided with a feeding branch pipe in one-to-one corresponding communication with the feeding main pipes and a discharging branch pipe in one-to-one corresponding communication with the discharging main pipes; and each feeding branch pipe and each discharging branch pipe are respectively provided with a control valve for cooperatively controlling all the resin columns to realize ion exchange, elution and resin regeneration in turn. The invention can reduce the usage amount of chemical agents, reduce the production cost, improve the yield of products, stabilize the quality of products, reduce the discharge of waste liquid and lighten the pressure for environment protection.

Description

technical field [0001] The invention relates to a continuous ion exchange device, in particular to a continuous ion exchange device for organic acid production. Background technique [0002] In the current production process of organic acids produced by fermentation, the ion exchange method has been widely used, mainly for organic acids to remove inorganic cations and anions. The equipment generally used in the existing ion exchange system is a fixed bed, which is a batch operation. The exchange and regeneration are carried out sequentially in the same bed. The single batch operation cycle is long and discontinuous, and the utilization rate of ion exchange resin is low. There are many valves in the pipeline and the labor intensity is high, the consumption of chemical reagents is large, it is uneconomical, and the discharge of waste water is large. Contents of the invention [0003] For this reason, the technical problem to be solved by the present invention is to adopt a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J47/00B01J47/02B01J47/14
Inventor 寇晓康樊文岷王刚郭福民
Owner SUNRESIN NEW METERIALS CO LTD XIAN
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