Tobacco extracting solution concentrating technology

A tobacco extract and extract technology, applied in the direction of electrodialysis, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problems of difficult cleaning, reverse osmosis membrane pollution, etc., and achieve easy cleaning, light membrane pollution, concentrated high degree of effect

Active Publication Date: 2019-03-22
CHINA TOBACCO YUNAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems such as nanofiltration and reverse osmosis that need to be driven by high pressure and use heat exchange equipment to cool down, and the reverse osmosis membrane will be seriously polluted during use, making it difficult to clean
At the same time, in the production process of tobacco water extraction extract, evaporation, nanofiltration and reverse osmosis concentration methods are also used, and the same problems mentioned above exist.

Method used

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  • Tobacco extracting solution concentrating technology
  • Tobacco extracting solution concentrating technology
  • Tobacco extracting solution concentrating technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A process for concentrating tobacco extract, comprising the steps of:

[0044] Step (1), primary purification: removing impurities from the tobacco extract to obtain a tobacco primary purification extract with a suspended matter content of 1-1.5%;

[0045] Step (2), microfiltration filtration: use a membrane with a pore size of 400nm to perform microfiltration on the tobacco primary purification extract obtained in step (1) at 90-100°C. During microfiltration, the operating pressure rises to 0.3MPa, and the filtration is stopped , to obtain retentate and permeate;

[0046] Step (3), forward osmosis concentration: performing forward osmosis concentration on the permeate obtained in step (2), to obtain tobacco extract concentrate and diluted drawing solution;

[0047] The extraction agent used in the concentration process is NaCl; the concentration temperature is 5-20°C, and the pressure is 0.1-0.3MPa; the concentration adopts a single-stage concentration method; the mem...

Embodiment 2

[0050] A process for concentrating tobacco extract, comprising the steps of:

[0051] Step (1), primary purification: remove impurities from the extract obtained by solid-liquid separation after extraction of tobacco raw materials, and obtain a tobacco primary purification extract with a suspended matter content of 1.8-3%; the method of removing impurities is natural sedimentation;

[0052] Step (2), microfiltration filtration: use a ceramic membrane with a pore size of 50nm to perform microfiltration on the tobacco primary purification extract obtained in step (1) at 10-20°C. During microfiltration, the operating pressure rises to 0.3MPa and stops Filter to obtain retentate and permeate;

[0053] Step (3), forward osmosis concentration: performing forward osmosis concentration on the permeate obtained in step (2), to obtain tobacco extract concentrate and diluted drawing solution;

[0054] The extraction agent used in the concentration process is potassium citrate; the conce...

Embodiment 3

[0057] A process for concentrating tobacco extract, comprising the steps of:

[0058] Step (1), primary purification: remove impurities from the extract obtained by solid-liquid separation after extraction of tobacco raw materials, and obtain a tobacco primary purification extract with a suspended matter content of 1.8-2.5%; the method of removing impurities is decanter centrifugation;

[0059] Step (2), microfiltration filtration: the tobacco primary purification extract obtained in step (1) is subjected to microfiltration at 0-40°C using a polyvinylidene fluoride membrane with a pore size of 200nm. During microfiltration, the operating pressure rises to 0.3MPa, stop filtering to obtain retentate and permeate;

[0060] Step (3), forward osmosis concentration: the permeate obtained in step (2) is subjected to forward osmosis concentration to obtain tobacco extract concentrate and diluted drawing solution; the membrane used for forward osmosis concentration is cellulose acetate...

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Abstract

The invention relates to a tobacco extracting solution concentrating technology, and belongs to the technical field of the tobacco extracting solution concentration. The technology comprises the following steps of: after performing primary purification on a tobacco water extracting solution, micro-filtering, performing positive permeation concentration on micro-filtering permeate, and recycling adiluted draw solution formed by the positive permeation concentration through using an electrodialysis or salt sun-drying mode. The technology has the advantages of low operating pressure, and high safety; low concentration temperature, and small temperature rising during a concentrating process, without heat-exchanging and cooling; and small membrane pollution, simple and convenient washing, andlow washing frequency. At the same time, the technology is high in concentration degree, and concentration of the concentrated tobacco extract can reach 60%. In a tobacco extracting solution concentrating working procedure of reconstituted tobaccos by a papermaking process, evaporation and concentration can be completely replaced. In the concentrating process, loss of materials, nicotine and volatile components is small, energy consumption is low, and popularization and application are easy.

Description

technical field [0001] The invention belongs to the technical field of concentrating tobacco extract, and in particular relates to a process for concentrating tobacco extract. Background technique [0002] In the production of reconstituted tobacco leaves by the papermaking method, the extraction of tobacco raw materials includes two methods: mixed extraction of stems and leaves and fractional extraction of stems and leaves. The batch or continuous extraction process is adopted. Regardless of the extraction method, the concentration of the tobacco extract is generally between 6-6. Between 12%. [0003] The concentration of tobacco extract is a process in the production of reconstituted tobacco leaves by the papermaking method. The purpose is to increase the concentration of the extract to a high concentration of 40-50% by mass, which is suitable for the base coating of reconstituted tobacco leaves. [0004] In the production of reconstituted tobacco leaves by the papermakin...

Claims

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Application Information

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IPC IPC(8): B01D61/00B01D61/14B01D61/42B01D61/58
CPCB01D61/002B01D61/005B01D61/147B01D61/422B01D61/58
Inventor 孔宁川韩智强张强徐广晋孙力关平徐世涛高锐武士杰徐重军
Owner CHINA TOBACCO YUNAN NEW MATERIAL
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