Method for increasing solid-liquid separation rate of raw tobacco powder raw material in tobacco reconstituting process

A technology for reconstituted tobacco leaves and solid-liquid separation, which is applied in the fields of tobacco, tobacco preparation, and application, and can solve the problems such as hovering around 15%, clogging the inlet of the pressing equipment, overflowing the dryness of the discharged material, and failing to reach 37%.

Inactive Publication Date: 2013-10-23
杭州利群环保纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the first-stage leaching solid-liquid separation in the tobacco powder extraction section of the domestic paper-making thin-sheet reconstituted tobacco industry, a single twin-screw press, or a single single-screw press is generally used as a single-stage solid-liquid separation equipment, without consideration The composite one-stage solid-liquid separation equipment has always hovered around 15% due to the inability to increase the dryness of the feed material. With the increasing shortage of tobacco powder raw materials for papermaking tobacco sheets, soot components are generally mixed into the formula to make it The compression ratio of the mixed material with water is reduced from 4 times to about 2 times. Due to the insufficient compression ratio, the inlet of the pressing equipment is often blocked and overflowed, and the dryness of the output of a single-stage solid-liquid separation equipment generally hovers around 25-30%. Unable to reach more than 37%

Method used

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  • Method for increasing solid-liquid separation rate of raw tobacco powder raw material in tobacco reconstituting process
  • Method for increasing solid-liquid separation rate of raw tobacco powder raw material in tobacco reconstituting process
  • Method for increasing solid-liquid separation rate of raw tobacco powder raw material in tobacco reconstituting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1 (comparative test)

[0013] 600kg contains 20% crushed leaves, 25% soot, 25% cigarette sticks, and 30% tobacco dust. After soaking, the mixed production material with a water content of 88% is obtained. Use a vertical mixing tank to control the valve opening to control the discharge speed. The solid-liquid mixed production materials are put into a leaking screw device, and the solid-liquid separation is carried out through the leaking screw, and then directly conveyed into the single-screw press by the inclined screw to form a complete set of solid-liquid separation system. The data obtained are shown in Table 1:

[0014] Table 1

[0015]

Embodiment 2

[0017] 600kg contains 20% of crushed leaves, 25% of soot, 25% of cigarette sticks, and 30% of tobacco dust. After soaking, a solid-liquid mixed production material with a water content of 88% is obtained. A vertical mixing tank is used to control the opening of the valve to make the solid-liquid mixed production material Enter the volumetric pump, the mixed material is controlled by the flowmeter concentration meter and enters a centrifugal extruder at a uniform speed, and then the liquid obtained by preliminary separation is carried out through the centrifugal extruder and the subsequent single-screw extruder extrudes the slag-containing liquid using a liquid pump. On the 100-mesh linear vibrating screen, the liquid is preliminarily screened at a working intensity of 10 times per second and an amplitude of 9mm. The obtained slag and the dry slag obtained from the centrifugal extruder are mixed and transported to the single The screw extruder is used for squeezing solid-liquid ...

Embodiment 3

[0021] 600kg contains 10% of broken leaves, 30% of soot, 25% of cigarette sticks, and 35% of tobacco dust. After soaking, the solid-liquid mixed production material with a water content of 88% is obtained. Use a vertical mixing tank to control the opening of the valve to make the solid-liquid mixed production material Enter the volume pump, and the mixed material is controlled by the flow meter concentration meter to enter a centrifugal extruder device at a uniform speed, and then the liquid obtained by preliminary separation is carried out through the centrifugal extruder and the subsequent single-screw extruder extrudes the slag-containing liquid using a liquid pump The liquid is preliminarily screened on the 100-mesh linear vibrating screen with a working intensity of 10 times per second and an amplitude of 9 mm. The obtained slag and the dry slag obtained from the centrifugal extruder are mixed and transported to the The single-screw press performs press-type solid-liquid s...

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Abstract

The invention provides a method for increasing the solid-liquid separation rate of a raw tobacco powder raw material in a tobacco reconstituting process. The method comprises the following steps: adding water into the tobacco powder raw material to form a solid-liquid mixed production material of which the water content is 85-90 percent, pumping the solid-liquid mixed production material into a centrifugal extruder through a volume pump, and processing at the rotating speed of 1,000-1,500 revolutions per minute to obtain an extruded dry material and a wet material; sieving the wet material in a linear and rotary way at the flux of 6,750-9,000 kilograms per hour to obtain a vibratory sieving procedure extracting solution and a vibratory sieving dry material, mixing the vibratory sieving dry material and the extruded dry material, and introducing the mixture into a single screw squeezer for squeezing to obtain a dry material of which the dryness is 37-38 percent and a squeezing procedure extracting solution; and mixing the squeezing procedure extracting solution and the vibratory sieving procedure extracting solution to obtain a tobacco powder raw material extracting solution of which the concentration is 8-10 percent. According to the method, specific to a crushed tobacco leaf raw material with high tobacco ash content, a dry material of which the dryness is over 37 percent can be obtained during solid-liquid separation.

Description

technical field [0001] The invention belongs to the technical field of reconstituted tobacco leaves, and in particular relates to a method for improving the solid-liquid separation rate of tobacco powder raw materials in the process of reconstituted tobacco leaves. Background technique [0002] In the first-stage leaching solid-liquid separation in the tobacco powder extraction section of the domestic paper-making thin-sheet reconstituted tobacco industry, a single twin-screw press, or a single single-screw press is generally used as a single-stage solid-liquid separation equipment, without consideration The composite one-stage solid-liquid separation equipment has always hovered around 15% due to the inability to increase the dryness of the feed material. With the increasing shortage of tobacco powder raw materials for papermaking tobacco sheets, soot components are generally mixed into the formula to make it The compression ratio of the mixed material with water is reduced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/14
Inventor 吴志宏郑煜郑勤安戴剑明裘柳枫周强黄捍平
Owner 杭州利群环保纸业有限公司
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