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

A technology of solid-liquid separation and papermaking, which is applied in the direction of separation of sediments by centrifugal force, tobacco, food science, etc., can solve the problems of low and single solid-liquid separation, and achieve the reduction of cigarette costs, increase of yield, and saving resource effect

Active Publication Date: 2011-10-12
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

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Experimental program
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Effect test

Embodiment 1

[0020] 600kg tobacco stems and 600kg tobacco leaf fragments were soaked in hot water at 40°C and 30°C for 1.5 hours, respectively, and extracted. The tobacco leaf fragments were directly pumped into a decanter centrifuge. After the tobacco stems were initially defibrated, they were pumped into a decanter centrifuge and centrifuged separately The solid tobacco stem residue and the solid tobacco leaf fragment residue are obtained, and the filtrate is combined to obtain the extract centrifugal liquid 1. The absolute dry solid content of the solid slag is 28.3% (using oven method to dry at 105°C to constant weight detection), and the liquid slag content is 1.2%. The solid slag is made into a thin substrate. The extract centrifugal liquid 1 is passed through the decanter centrifuge again to obtain the centrifugal liquid 2 with a residue content of 0.50%. The centrifugal liquid 2 is passed through the disc separator to obtain the centrifugal liquid 3 with a slag content of 0.08%. Th...

Embodiment 2

[0024] 600kg tobacco stems and 600kg tobacco leaf fragments were soaked in hot water at 40°C and 30°C for 1.5 hours, respectively, and extracted. The tobacco leaf fragments were directly pumped into a decanter centrifuge. After the tobacco stems were initially defibrated, they were pumped into a decanter centrifuge and centrifuged separately The solid tobacco stem residue and the solid tobacco leaf fragment residue are obtained, and the filtrate is combined to obtain the extract centrifugal liquid 1. The absolute dry average solid content of the solid slag is 28.4%, and the liquid slag content is 1.3%. The solid slag is made into a thin substrate. The extracted centrifugal liquid 1 is passed through the decanter centrifuge again to obtain the centrifugal liquid 2 with a residue content of 0.51%. The centrifugal liquid 2 is passed through the disc separator to obtain the centrifugal liquid 3 with a slag content of 0.07%. The centrifugal liquid 3 is pumped into the flat top disc...

Embodiment 3

[0028] 600kg tobacco stems and 600kg tobacco leaf fragments were soaked in hot water at 40°C and 30°C for 1.5 hours, respectively, and extracted. The tobacco leaf fragments were directly pumped into a decanter centrifuge. After the tobacco stems were initially defibrated, they were pumped into a decanter centrifuge and centrifuged separately The solid tobacco stem residue and the solid tobacco leaf fragment residue are obtained, and the filtrate is combined to obtain the extract centrifugal liquid 1. The absolute dry solid content of the solid slag is 28.3%, and the liquid slag content is 1.2%. The solid slag is made into a thin substrate. The extract centrifugal liquid 1 is passed through the decanter centrifuge again to obtain the centrifugal liquid 2 with a residue content of 0.50%. The centrifugal liquid 2 is passed through the disc separator to obtain the centrifugal liquid 3 with a slag content of 0.08%. The centrifugal liquid 3 is pumped into a three-foot upper discharg...

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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 innext 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 a 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 part of low-grade tobacco leaves during the cigarette processing process. On the one hand, the paper-making flakes can maximize the use of tobacco raw materials and save cigarette costs; on the other hand, the tobacco flakes play an important role in reducing the release of cigarette tar and reducing the harm of cigarettes. Generally, the preparation method of paper-making tobacco flakes has the following steps: firstly, the tobacco materials (tobacco stems, tobacco leaf fragments) are soaked and extracted with hot water, and the tobacco w...

Claims

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Application Information

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Patent Type & Authority Patents(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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