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Cleaning system and method for decolorizing membrane in membrane-process sugar making system

A cleaning system and decolorization technology, which is applied in the field of cleaning systems for decolorization membranes in membrane sugar production systems, can solve problems such as decolorization membrane pollution, and achieve the effects of reducing operating costs and improving stability.

Active Publication Date: 2020-06-16
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem of decolorization membrane pollution in the existing membrane sugarcane sugar production process, the invention provides a cleaning system and cleaning method for the decolorization membrane in the membrane sugar production system

Method used

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  • Cleaning system and method for decolorizing membrane in membrane-process sugar making system

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Embodiment 1

[0060] This embodiment provides a cleaning system for the decolorization membrane in the membrane sugar production system, the structural diagram is as follows figure 1 As shown, it includes a clarification membrane filtration unit 1 , a decolorization membrane filtration unit 2 and a concentration membrane filtration unit 3 connected in sequence, and also includes an alkali cleaning unit 4 and an enzyme-catalyzed oxidation unit 5 .

[0061] The alkali cleaning unit 4 includes an lye storage device and an lye delivery device; the lye delivery device is used to deliver the lye in the lye storage device to the decolorization membrane filter unit 2 .

[0062] The enzyme-catalyzed oxidation unit 5 includes an enzyme-catalyzed oxidation reactor carrying glucose oxidase and an oxidation liquid delivery device; the liquid inlet of the enzyme-catalyzed oxidation reactor is connected to the permeate outlet of the concentrated membrane filtration unit 3; The oxidation liquid delivery de...

Embodiment 2

[0066] This embodiment provides a cleaning system for the decolorization membrane in the membrane sugar system, including a clarification membrane filtration unit 1, a decolorization membrane filtration unit 2, and a concentration membrane filtration unit 3 connected in sequence, and also includes an alkali cleaning unit 4 and enzyme-catalyzed oxidation Unit 5.

[0067] The alkali cleaning unit 4 includes an lye storage device and an lye delivery device; the lye delivery device is used to deliver the lye in the lye storage device to the decolorization membrane filter unit 2 .

[0068] The enzyme-catalyzed oxidation unit 5 includes an enzyme-catalyzed oxidation reactor carrying glucose oxidase and an oxidation liquid delivery device; the liquid inlet of the enzyme-catalyzed oxidation reactor is connected to the permeate outlet of the concentrated membrane filtration unit 3; The oxidation liquid delivery device is used to transport the oxidation liquid produced by the enzyme-cat...

Embodiment 3

[0072] This embodiment provides a cleaning system for the decolorization membrane in the membrane sugar system, including a clarification membrane filtration unit 1, a decolorization membrane filtration unit 2, and a concentration membrane filtration unit 3 connected in sequence, and also includes an alkali cleaning unit 4 and enzyme-catalyzed oxidation Unit 5.

[0073] The alkali cleaning unit 4 includes an lye storage device and an lye delivery device; the lye delivery device is used to deliver the lye in the lye storage device to the decolorization membrane filter unit 2 .

[0074] The enzyme-catalyzed oxidation unit 5 includes an enzyme-catalyzed oxidation reactor carrying glucose oxidase and an oxidation liquid delivery device; the liquid inlet of the enzyme-catalyzed oxidation reactor is connected to the permeate outlet of the concentrated membrane filtration unit 3; The oxidation liquid delivery device is used to transport the oxidation liquid produced by the enzyme-cat...

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Abstract

The invention provides a cleaning system and a cleaning method for a decolorizing membrane in a membrane-process sugar making system. The membrane-process sugar making system comprises a clarificationmembrane filtering unit, a decolorizing membrane filtering unit and a concentration membrane filtering unit which are connected in sequence. The cleaning system comprises an alkali cleaning unit andan enzyme catalytic oxidation unit. A liquid outlet of the alkali cleaning unit is connected with a liquid inlet of the decolorizing membrane filtering unit. A liquid inlet of the enzyme catalytic oxidation unit is connected with a permeate liquid outlet of the concentration membrane filtering unit, and a liquid outlet of the enzyme catalytic oxidation unit is connected with a liquid inlet of thedecoloration membrane filtering unit. According to the invention, the concentrated membrane permeate is catalytically oxidized into hydrogen peroxide and gluconic acid, hydrogen peroxide is added to oxidize and degrade pollutants in membrane pores and inhibit and kill microorganisms attached to the surfaces of the membrane pores, and gluconic acid can quickly shrink and recover swelling of the membrane pores after alkali cleaning, so that the stability of the membrane-process sugarcane sugar making system is improved, and the operation cost of a membrane-process sugarcane sugar making processis reduced.

Description

technical field [0001] The invention belongs to the technical field of membrane sugar production, and relates to a membrane cleaning system and method in the membrane sugar production process, in particular to a membrane cleaning system and method for decolorizing membranes in the membrane sugar production system. Background technique [0002] In the traditional sugar making process, the sulfurous acid method or carbonic acid method is mainly used to clean the sugarcane mixed juice, which has problems such as complex process, low decolorization rate, unstable quality of finished sugar, and sulfur content in the product affecting food safety. Membrane green sugar production technology that has emerged in recent years uses purely physical separation methods to remove suspended solids, pigments and small non-sugar molecules in sugarcane mixed juice. It is green and harmless, high decolorization rate, stable product quality and easy to automate production advantage. [0003] CN...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B20/16B01D65/06
CPCB01D65/02B01D2321/164B01D2321/168C13B20/165
Inventor 罗建泉万印华
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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