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Reconstituted tobacco extract concentration process and concentration system

A technology for reconstituted tobacco leaves and extracts, which is applied in the fields of tobacco, tobacco preparation, and tobacco treatment. It can solve the problems of low-temperature membrane concentration concentration ratio and low concentration efficiency, and overcome the difficulty of membrane cleaning and replacement, concentration ratio and concentration efficiency. The effect of reducing and slowing down the degree of membrane fouling

Pending Publication Date: 2022-01-18
SHANGHAI TOBACCO GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a reconstituted tobacco leaf extract concentration process and concentration system, which is used to solve the problems of low concentration multiples and low concentration efficiency of low-temperature membrane concentration in the prior art, and to prevent Tobacco active ingredient loss and mitigation membrane fouling degree and cleaning frequency

Method used

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  • Reconstituted tobacco extract concentration process and concentration system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Concentrating the reconstituted tobacco leaf extract with an initial solid content of 8.6% by using the above-mentioned concentrating process and concentration system for the reconstituted tobacco leaf extract includes the following steps:

[0043] 1) The reconstituted tobacco leaf extract is pre-concentrated by the low-temperature dehydration membrane distillation process, that is, the reconstituted tobacco leaf extract with an initial solid content of 8.6% is pumped into the hot side channel of the membrane distillation device, and then air is injected into the device as a purge gas Cold side channel, the flow rate of purge gas in the cold side channel is 1m / s, the vacuum degree of the cold side channel is 0.01Mpa, water vapor continuously evaporates from the hot side feed liquid, penetrates the porous hydrophobic membrane and enters the cold side air Among them, the porous hydrophobic membrane has a membrane pore size of 0.1 μm, a porosity of 80%, and an air permeabil...

Embodiment 2

[0049] Concentrating the reconstituted tobacco leaf extract with an initial solid content of 8.6% by using the above-mentioned concentrating process and concentration system for the reconstituted tobacco leaf extract includes the following steps:

[0050] 1) The reconstituted tobacco leaf extract is pre-concentrated by the low-temperature dehydration membrane distillation process, that is, the reconstituted tobacco leaf extract with an initial solid content of 8.6% is pumped into the hot side channel of the membrane distillation device, and then air is injected into the device as a purge gas Cold side channel, the flow rate of purge gas in the cold side channel is 3m / s, the vacuum degree of the cold side channel is 0.02Mpa, the water vapor continuously evaporates from the hot side feed liquid, penetrates the porous hydrophobic membrane and enters the cold side air Among them, the porous hydrophobic membrane has a membrane pore size of 0.2 μm, a porosity of 82%, and an air perme...

Embodiment 3

[0056] Concentrating the reconstituted tobacco leaf extract with an initial solid content of 9.3% by using the above-mentioned concentrating process and concentration system for the reconstituted tobacco leaf extract includes the following steps:

[0057] 1) The reconstituted tobacco leaf extract is pre-concentrated by the low-temperature dehydration membrane distillation process, that is, the reconstituted tobacco leaf extract with an initial solid content of 8.6% is pumped into the hot side channel of the membrane distillation device, and then air is injected into the device as a purge gas Cold side flow channel, the flow rate of purge gas in the cold side flow channel is 7m / s, the vacuum degree of the cold side flow channel is 0.04Mpa, water vapor continuously evaporates from the hot side feed liquid, penetrates the porous hydrophobic membrane and enters the cold side air Among them, the porous hydrophobic membrane has a membrane pore size of 0.3 μm, a porosity of 90%, and an ...

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Abstract

The invention provides a reconstituted tobacco extract concentration process. A membrane distillation process, a nanofiltration membrane process, an evaporation concentration process and a reverse osmosis membrane process are adopted to carry out layer-by-layer deep concentration on a reconstituted tobacco extract, so that a concentrated solution of the reconstituted tobacco extract can be obtained. The invention further provides a reconstituted tobacco extract concentration system. The system comprises a membrane distillation device, a nanofiltration membrane assembly, an evaporator, a reverse osmosis membrane assembly and a concentrated liquid storage tank. With the membrane concentration combined process and system provided by the invention adopted, the problems of concentration multiple, concentration efficiency and the like of low-temperature membrane concentration can be solved, the loss of effective components of tobacco can be prevented, the membrane pollution degree and the cleaning frequency can be slow downed, and quality and efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of reconstituted tobacco leaf preparation by papermaking method, and in particular relates to a process for concentrating reconstituted tobacco leaf extract and a concentrating system. Background technique [0002] The papermaking method reconstituted tobacco leaves is to extract and squeeze tobacco waste such as tobacco stems, tobacco powder or shredded tobacco sheets to achieve solid-liquid separation. The base sheet is prepared by the method, and then the concentrated liquid and the base sheet are recombined in a coating system, and finally a cigarette raw material obtained by drying and cutting. Because it plays a greater role in reducing tar and harm of cigarettes, it is widely used in the cigarette industry. [0003] At present, after the extraction of reconstituted tobacco leaves by the papermaking method is filtered, it needs to be concentrated by an evaporator until the solid content of the concent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/36B01D61/02B01D1/00A24B3/14A24B15/24
CPCB01D61/364B01D61/027B01D61/025B01D1/00A24B15/241A24B3/14
Inventor 赵东辉李新生张登陈黎
Owner SHANGHAI TOBACCO GRP CO LTD