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Method for solid-liquid separation during sheet production through papermaking process

A technology for solid-liquid separation and papermaking, which is applied in the separation of sediments, tobacco, and food science by centrifugal force, and can solve the problems of low requirements for solid-liquid separation and singleness, so as to reduce the cost of cigarettes, improve the yield, and save money. The effect of resources

Active Publication Date: 2010-06-23
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Other methods are also available for separation, such as patent CN1274548 mentioning double-roller extractor, patent CN1370475 mentioning centrifugation or pressure filtration, and patent CN1895100 using a folded belt filter, but with regard to the separation method, it is all relatively single, and it may be compared with The degree of solid-liquid separation is not high

Method used

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  • Method for solid-liquid separation during sheet production through papermaking process

Examples

Experimental program
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Effect test

Embodiment 1

[0020] 600kg of tobacco stems and 600kg of tobacco leaf fragments were soaked in hot water at 40°C and 30°C for 1.5 hours respectively, extracted, and the tobacco leaf fragments were directly pumped into a decanter centrifuge. The solid tobacco stem residue and the solid tobacco leaf fragment residue are obtained, and the filtrates are combined to obtain an extraction centrate 1. The absolute dry solid content of solid slag is 28.3% (tested by oven method at 105°C to constant weight), and the liquid slag content rate is 1.2%. The solid slag is made into a thin sheet substrate. The extracted centrifugate 1 was passed through a decanter centrifuge again to obtain a centrifuge 2 with a slag content rate of 0.50%. The centrate 2 is passed through the disc separator to obtain the centrate 3, the liquid slag rate is 0.08%, and the centrate 3 is pumped into the three-legged upper discharge centrifuge for centrifugation (the filter bag mesh number is 1000 mesh) to obtain the centrate...

Embodiment 2

[0024] 600kg of tobacco stems and 600kg of tobacco leaf fragments were soaked in hot water at 40°C and 30°C for 1.5 hours respectively, extracted, and the tobacco leaf fragments were directly pumped into a decanter centrifuge. The solid tobacco stem residue and the solid tobacco leaf fragment residue are obtained, and the filtrates are combined to obtain an extraction centrate 1. The dry average solid content of solid slag is 28.4%, and the liquid slag content rate is 1.3%. The solid slag is made into a thin sheet substrate. The extracted centrifugate 1 was passed through a decanter centrifuge again to obtain a centrifuge 2 with a slag content rate of 0.51%. The centrifugate 2 is passed through the disc separator to obtain the centrifugate 3, and the liquid slag rate is 0.07%, and the centrifugate 3 is pumped into the flat plate upper discharge centrifuge for centrifugation (the filter bag mesh number is 1000 mesh), and the centrifugate 4 is obtained. , the liquid slag conte...

Embodiment 3

[0028] 600kg of tobacco stems and 600kg of tobacco leaf fragments were soaked in hot water at 40°C and 30°C for 1.5 hours respectively, extracted, and the tobacco leaf fragments were directly pumped into a decanter centrifuge. The solid tobacco stem residue and the solid tobacco leaf fragment residue are obtained, and the filtrates are combined to obtain an extraction centrate 1. The absolute dry solid content of solid slag is 28.3%, and the liquid slag content rate is 1.2%. The solid slag is made into a thin sheet substrate. The extracted centrifugate 1 was passed through a decanter centrifuge again to obtain a centrifuge 2 with a slag content rate of 0.50%. The centrate 2 is passed through the disc separator to obtain the centrate 3, the liquid slag rate is 0.08%, and the centrate 3 is pumped into the three-legged upper discharge centrifuge for centrifugation (the filter bag mesh number is 600 mesh) to obtain the centrate 4. The liquid residue rate is 0.012%. The centrifu...

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Abstract

The invention discloses a method for solid-liquid separation during tobacco sheet production through papermaking process, which includes steps: respectively extracting the fragments of tobacco stalk and tobacco leaf through hot water; respectively implementing horizontal centrifugal separation on the mixture of the fragments of tobacco stalk or tobacco leaf, and water, moving solid slag to the working procedure of defibrination, and moving the extract liquor eliminating coarse slag into a disc type separator, and feeding the obtained clear liquid into the working procedure of concentrating in next section; then concentrating the extract liquor, and spraying or coating the concentrated extract liquor on a formed fiber sheet substrate, drying, tabletting and forming. The production technique method adopted by the invention improves the use ratio for sheet production concentrators through papermaking technique and increases the inherent quality of the concentrated liquor, thereby improving the inherent quality of sheet products through papermaking technique.

Description

technical field [0001] The invention relates to a production method of tobacco flakes, in particular to a method for solid-liquid separation after extraction of tobacco stems, soot or tobacco leaf fragments in the papermaking production process. Background technique [0002] Tobacco flakes are reconstituted tobacco leaves that are recombined and processed from tobacco waste materials such as tobacco dust, tobacco stems, tobacco leaf fragments and some low-grade tobacco leaves during the cigarette processing process. On the one hand, paper-making thin sheets can maximize the use of tobacco raw materials and save the cost of cigarettes; on the other hand, tobacco thin sheets play an important role in reducing the amount of tar released from cigarettes and reducing the harm of cigarettes. Usually the preparation method of paper-making tobacco flakes has the following steps: first soak and extract the tobacco materials (tobacco stems, tobacco leaf fragments) in hot water, and se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/14B01D21/26
Inventor 尹新强谭新良傅见山邓昌健尹大锋刘金云姚舜郭学民
Owner CHINA TOBACCO HUNAN INDAL CORP
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