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

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...

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%

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