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Method for detecting purity of reconstituted tobacco coating solution

A technology of reconstituted tobacco leaves and detection methods, which is applied in the field of tobacco manufacturing, can solve the problems that the measured data cannot faithfully reflect the true level, the liquid concentration and viscosity are large, and the detection results have a great influence, so as to improve the effect of solid-liquid stratification , Small amount of sampling, easy implementation

Inactive Publication Date: 2018-02-27
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are several problems in this method: one is that the sieve is easily clogged and the filtering effect is not good; the other is that the solid content of the coating liquid after filtration is higher than that before filtration; The measured data cannot faithfully reflect the real level
However, for the coating liquid, due to the high concentration and viscosity of the liquid, the liquid entrained in the bottom sediment after centrifugation has a great influence on the detection results
Therefore, this method is not suitable for the purity detection of coating liquid

Method used

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  • Method for detecting purity of reconstituted tobacco coating solution

Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] A method for detecting the purity of reconstituted tobacco leaf coating solution, comprising the following steps:

[0022] (1) Dilute the reconstituted tobacco leaf coating solution 4 times (by weight), weigh two samples of the diluted coating solution with a mass of a gram and b gram respectively, and put the two samples into two oven-dried constant In the heavy No. 1 and No. 2 drying cylinders, the mass of the No. 1 drying cylinder is c grams, and the mass of the No. 2 drying cylinder is d grams;

[0023] (2) Put No. 1 and No. 2 spin-drying cylinders equipped with diluted coating liquid samples in the sleeve of the centrifuge respectively in the above step (1);

[0024] (3) Set the operating parameters of the centrifuge, the centrifugation time is 5 minutes, the rotating speed is 3000 rpm, and the safety protection cover is covered, and the centrifuge is started;

[0025] (4) After the centrifugation is completed, take out the two drying cylinders, pour out the liqui...

Embodiment 2

[0035] A method for detecting the purity of reconstituted tobacco leaf coating solution, comprising the following steps:

[0036] (1) Dilute the reconstituted tobacco leaf coating solution 5 times (by weight), weigh two samples of the diluted coating solution with a mass of a gram and b gram respectively, and put the two samples into two oven-dried constant In the heavy No. 1 and No. 2 drying cylinders, the mass of the No. 1 drying cylinder is c grams, and the mass of the No. 2 drying cylinder is d grams;

[0037] (2) Put No. 1 and No. 2 spin-drying cylinders equipped with diluted coating liquid samples in the sleeve of the centrifuge respectively in the above step (1);

[0038] (3) Set the operating parameters of the centrifuge, the centrifugation time is 5 minutes, the rotating speed is 3000 rpm, and the safety protection cover is covered, and the centrifuge is started;

[0039] (4) After the centrifugation is completed, take out the two drying cylinders, pour out the liqui...

Embodiment 3

[0049] A method for detecting the purity of reconstituted tobacco leaf coating solution, comprising the following steps:

[0050] (1) Dilute the reconstituted tobacco leaf coating solution 6 times (by weight), weigh two samples of the diluted coating solution with a mass of a gram and b gram respectively, put the two samples into two oven-dried constant In the heavy No. 1 and No. 2 drying cylinders, the mass of the No. 1 drying cylinder is c grams, and the mass of the No. 2 drying cylinder is d grams;

[0051] (2) Put No. 1 and No. 2 spin-drying cylinders equipped with diluted coating liquid samples in the sleeve of the centrifuge respectively in the above step (1);

[0052] (3) Set the operating parameters of the centrifuge, the centrifugation time is 5 minutes, the rotating speed is 4000 rpm, and the safety protection cover is covered, and the centrifuge is started;

[0053] (4) After the centrifugation is completed, take out the two drying cylinders, pour out the liquid in...

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Abstract

The invention provides a method for detecting the purity of a reconstituted tobacco coating solution. The method comprises the following steps: diluting the reconstituted tobacco coating solution by Mtimes, weighing a g of a diluted coating solution sample and b g of a diluted coating solution sample, carrying out centrifugal spin-drying on the weighed samples, pouring out liquid in a drum and reserving precipitate at the bottom of the drum, then injecting clear water into the drum and then carrying out centrifugal spin-drying, and calculating the content of wet precipitate; continuously adding diluted coating solution samples into the spin-drying drum, then centrifuging and reserving precipitate at the bottom of the drum, repeatedly carrying out the operation for a plurality of times, then pouring clear water into the drum and carrying out centrifugal spin-drying, pouring out liquid in the drum, reserving precipitate at the bottom of the drum, and then weighing; drying the obtained precipitate and the spin-drying drum to a constant weight and then weighing, calculating precipitate dryness, and multiplying the wet precipitate content with the precipitate dryness to obtain the precipitate content of the coating solution; finally, subtracting the precipitate content from 1 to obtain a value of the purity. The method provided by the invention has the advantages of simpleness, easy implementation, less sampling volume and accurate result.

Description

technical field [0001] The invention relates to the technical field of tobacco manufacturing, in particular to a method for detecting the purity of a coating liquid for reconstituted tobacco leaves. Background technique [0002] Domestic papermaking reconstituted tobacco leaves are usually produced by a two-step method. First, the active ingredients of the tobacco are fully soaked in a solvent, and then the tobacco extract is concentrated and backfilled on the tobacco substrate. The key production processes include extraction, concentration, pulping, Copying, coating and other processes. At present, the purity of the coating solution is indirectly characterized by the slag content rate. The detection method is to directly filter through an 80-mesh stainless steel screen, and then use the difference between the solid content of the coating solution before and after filtration as the slag content rate. There are several problems in this method: one is that the sieve is easily...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 胡念武
Owner HUBEI CHINA TOBACCO IND
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