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Continuous dehydrating production process and device for nitro-cotton

A production process and nitrocellulose technology, applied in the field of dehydration, can solve the problems of many human factors, high labor intensity, low production efficiency, etc., and achieve the effects of good uniformity of water and wine content, reduction of alcohol consumption, and reduction of labor intensity.

Inactive Publication Date: 2010-09-15
FUCHENG CHENGXIN CELLULOSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this batch dehydration process can solve the aforementioned problems, it has many defects due to its complicated process flow.
First of all, each step of the process is manually operated and transferred, which is not only labor-intensive, but also time-consuming and low in production efficiency. A maximum of 4-5 tons of nitrocellulose products can be produced by 15 people a day.
On the other hand, due to manual operation and many human factors, the product quality is extremely unstable and difficult to control
From a safety point of view, nitrocellulose is flammable, and there are safety hazards in the production of the traditional alcoholization process with intensive operations

Method used

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  • Continuous dehydrating production process and device for nitro-cotton
  • Continuous dehydrating production process and device for nitro-cotton

Examples

Experimental program
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specific Embodiment approach

[0028] Such as figure 1 , figure 2 As shown, the horizontal centrifuge is provided with at least one decompression hook 1 at the outlet end of the common horizontal centrifuge. The decompression hook is provided with at least one hook head at the end of the rod body, and the tail end of the rod body is fixed on the centrifuge. On the housing 2, the hook head stretches to the inside of the screen cloth 3. The lower part of the horizontal centrifugal deflagging machine is provided with a water outlet 5, and the bottom right is provided with a discharge port 4. The decompression hook is arranged upstream of the discharge port 4. Discharge. In order to improve the defibration effect, three or more defibrillation hooks can be set in the horizontal centrifugal decontamination machine, and three or more hook heads can also be arranged on each defibration hook. When a plurality of release hooks are arranged, the rod body tail ends of each release hooks are respectively fixed on th...

Embodiment 1

[0031] Production process of continuous dehydration of nitrocellulose for L-shaped paint ( Figure 4 shown):

[0032] ① Use the first cotton delivery pump 8 to send the water-containing nitrocellulose from the storage container 7 into the horizontal centrifugal disintegrator 9 for dehydration and disintegration. figure 1 , figure 2 As shown, the horizontal centrifuge is provided with a decompression hook 1 at the outlet end of the horizontal centrifuge, and the decompression hook is provided with three hook heads at the end of the rod body, and the tail end of the rod body is fixed on the centrifuge. On the housing 2, the hook head stretches to the inside of the screen cloth 3. In this step, the rotating speed of the horizontal centrifuge is 1200 rpm. The nitrocellulose was dehydrated in a centrifuge for 4 minutes. The water content of the dehydrated and decomposed nitrocellulose is 30%.

[0033] ②Put the nitrocellulose output from the outlet of the horizontal centrifuga...

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Abstract

The invention discloses a continuous dehydrating production process and a continuous dehydrating production device for nitro-cotton. The process comprises the following steps of: conveying hydrous nitro-cotton to a horizontal centrifugal defiberizer for the first dehydration defibering process by using a cotton-conveying pump, wherein the horizontal centrifugal defiberizer is that at least one defibering hook is arranged at the outlet end of a horizontal centrifuge, the defibering hook is that a hook head is arranged on the end part of a rod body, the tail end of the rod body is fixed on a shell of the centrifuge and the hook head extends inside a sieve; collecting the nitro-cotton output from a discharge outlet of the horizontal centrifugal defiberizer into a weak liquor container for stirring and alcoholizing; inputting the nitro-cotton output from the weak liquor container into a horizontal centrifugal defibering alcoholizing machine for alcoholizing and defibering; arranging an alcohol spraying pipe on the top of the shell of the centrifuge; and packaging the nitro-cotton prepared conventionally. Aiming at the nitro-cotton products, such as the nitro-cotton for L-type coatings with low nitrogen content and high hydrophilism, the nitro-cotton for celluloid and the like, which cannot be produced qualifiedly by the continuous production process, qualified products meeting the quality requirement can be manufactured by the process.

Description

technical field [0001] The invention relates to the technical field of dehydration, in particular to a continuous dehydration production process and device for nitrocellulose. Background technique [0002] The first half of the civilian nitrocellulose manufacturing process is carried out in a large amount of water, and the second half is a dehydration and alcoholization process. The existing dehydration and alcoholization processes are continuous dehydration production processes or intermittent dehydration processes. Among them, the continuous dehydration process has poor dehydration and alcoholization effects, and cannot produce products that meet the quality standards for the nitrocellulose for L-shaped coatings with good hydrophilicity and the nitrocellulose for celluloid. The intermittent dehydration process is as follows: the water-containing nitrocellulose is dehydrated by a vertical centrifuge, then dehydrated and bagged, then alcoholized by a vertical centrifuge, and...

Claims

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Application Information

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IPC IPC(8): C08B5/02
Inventor 赵和平
Owner FUCHENG CHENGXIN CELLULOSE
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