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A kind of tobacco extract concentration process

A tobacco extract and extract technology, applied in ultrafiltration, membrane technology, chemical instruments and methods, etc., can solve problems such as difficult cleaning and reverse osmosis membrane pollution, and achieve easy cleaning, light membrane pollution, and high concentration Effect

Active Publication Date: 2021-08-13
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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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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PUM

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Abstract

The invention relates to a process for concentrating tobacco extract, belonging to the technical field of concentrating tobacco extract. The process is to micro-filter the tobacco water extract after primary purification, carry out forward osmosis concentration on the microfiltration permeate, and recover and recycle the diluted drawing solution formed by the forward osmosis concentration by electrodialysis or drying salt. The process of the invention has low operating pressure and high safety; the concentration temperature is low, the temperature rise is small during concentration, and heat exchange and temperature reduction are not required; the membrane pollution is light, the cleaning is simple and the cleaning frequency is low. At the same time, the process of the present invention has a high degree of concentration, and the concentration of the tobacco extract after concentration can reach 60%; in the process of concentrating the tobacco extract of reconstituted tobacco leaves in the papermaking method, it can completely replace evaporation and concentration; and the loss of materials, nicotine and volatile components in the process of concentration Small, low energy consumption, easy to popularize and apply.

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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Patent Type & Authority Patents(China)
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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