Method for cleaning membrane pollution in process of electrodialysis treatment on paper-making reconstituted tobacco extract liquor

A technology of reconstituted tobacco leaves and electrodialysis, applied in the direction of electrodialysis, tobacco treatment, chemical instruments and methods, etc., can solve the problems of reducing the stability of chlorine and nitrate, electrodialysis membrane pollution, etc., to improve the effect and restore the membrane flux , to ensure the effect of stability

Inactive Publication Date: 2020-09-18
CHINA TOBACCO ANHUI IND CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

However, in this process, the contamination of the electrodialysis membrane by the extract is inevitable, which reduces the stability of the continuous removal of chlorine and nitrate in the tobacco extract or the extract by electrodialysis to a certain extent.

Method used

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  • Method for cleaning membrane pollution in process of electrodialysis treatment on paper-making reconstituted tobacco extract liquor
  • Method for cleaning membrane pollution in process of electrodialysis treatment on paper-making reconstituted tobacco extract liquor
  • Method for cleaning membrane pollution in process of electrodialysis treatment on paper-making reconstituted tobacco extract liquor

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Embodiment 1

[0036] The composition of each component of the alkaline cleaning agent used in the present embodiment by mass percentage is:

[0037]

[0038] After the components are uniformly mixed by mass percentage, add water to prepare a solution with a mass concentration of 2%, which is the alkaline cleaning agent used in this embodiment.

[0039] In the present embodiment, the electrodialysis continuous operation experiment with cleaning is carried out on the above-mentioned materials by the electrodialysis system:

[0040] 1. Electrodialysis

[0041] Pass 500mL Na in the anode and cathode compartments 2 SO 4 Solution (conductivity of 10mS / cm), 2000mL of 7% material into the desalination chamber, 1000mL of deionized water into the concentration chamber, start the circulating pump of each chamber, apply a voltage of 7V for constant voltage operation, and stop running after 180min. . This is a batch of electrodialysis process.

[0042] 2. Cleaning

[0043] After a batch of elec...

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Abstract

The invention discloses a method for cleaning membrane pollution in the process of electrodialysis treatment on paper-making reconstituted tobacco extract liquor, which is used for cleaning an electrodialysis system generating membrane pollution through the cleaning processes of primary water washing, reversed-pole alkaline washing, secondary water washing, reversed-pole acid washing and tertiarywater washing in sequence. According to the cleaning method, membrane pollution in the electrodialysis process can be effectively solved, the desalination rate of an electrodialysis system is remarkably recovered, and reliable operation guarantee is provided for the process of treating the paper-making process reconstituted tobacco extracting solution through electrodialysis.

Description

technical field [0001] The invention belongs to the field of tobacco extract liquid separation, and particularly relates to a method for cleaning membrane pollution in the process of electrodialysis treatment of reconstituted tobacco leaf extract liquid by a papermaking method. Background technique [0002] Tobacco flakes (or reconstituted tobacco leaves) are regenerated products made from tobacco stems, tobacco powders, shredded tobacco flakes and other tobacco substances as raw materials into sheets or filaments, which are used as cigarette fillers. Adding tobacco sheets to cigarettes can not only realize the reuse of waste tobacco raw materials, but also controllably adjust the physical and chemical properties of cigarettes, thereby improving the inherent quality of cigarettes and reducing and improving the harm of bad components in tobacco. At present, the papermaking method is mainly used to produce reconstituted tobacco leaves in China, which uses tobacco leaf fragment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/06B01D65/02B01D61/48A24B3/14A24B15/24
CPCA24B3/14A24B15/24B01D61/48B01D65/02B01D2321/162B01D2321/164Y02A20/124Y02A20/131
Inventor 张朝孙丽莉彭晓萌徐冰霞葛少林佘世科黄兰王健
Owner CHINA TOBACCO ANHUI IND CO LTD
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