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Production process of 300sec viscosity nitrocotton

A production process and nitrocellulose technology, applied in the field of nitrocellulose, can solve problems such as poor stability of nitrocellulose, and achieve the effects of avoiding unstable performance, improving stability and eliminating danger

Inactive Publication Date: 2016-12-07
NANTONG TAILIDA CHEM
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of production technology of 300 seconds degree nitrocellulose, to solve the problem of poor stability of nitrocellulose proposed in the patent CN103319611 B

Method used

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Embodiment Construction

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] The invention discloses a production process of nitrocellulose with a degree of 300 seconds. The process flow includes the following steps:

[0016] Step 1: Refined cotton is heated for a certain period of time in a certain environment. First, the refined cotton is roughly dehydrated and dried by a centrifugal dehydrator, and then the refined cotton is heated in a hot air environment. The heating time is 5-10 minutes, and then sent to the nitrification chamber;

[0017] Step 2: Nitrification of refined cotton. Use a certain ...

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Abstract

The invention discloses a production process of 300sec viscosity nitrocotton. The process comprises the steps of: first, refined cotton heating: in certain environment, heating refined cotton for a certain period of time; second, refined cotton nitrification: using certain acid to conduct nitrification for certain period of time; third, nitrocotton acid removal: removing acid from the nitrified refined cotton by specific instrument; fourth, nitrocotton boiling washing: subjecting the acid removed nitrocotton to boiling washing through a specific solution; and fifth, nitrocotton dehydration: dehydrating the boiling washed nitrocotton and preliminarily controlling the water content of the nitrocotton. The method provided by the invention can obviously improve the stability, avoids the problem of unstable performance of 2000300sec viscosity nitrocotton, can endure a short period of time of local high temperature, avoids the acid liquid boiling phenomenon caused by local high temperature, and avoids the release of nitrogen dioxide, cannot cause bursting of a nitrocotton holding container, eliminates unnecessary risks, and avoids waste and loss.

Description

technical field [0001] The invention relates to the technical field of nitrocellulose, in particular to a production process of 300-second nitrocellulose. Background technique [0002] Nitrocellulose: Nitrocellulose is white or yellowish cotton floc, soluble in acetone. The scientific name is cellulose nitrate, formerly known as nitrocellulose and nitrocellulose. NC is a polymer with a large molecular weight. Its molecular formula is C6H7O2(ONO2)a(OH)3-an, where a is the degree of esterification and n is the degree of polymerization. It is customary to use the percentage of nitrogen content to represent the degree of esterification. Nitrocellulose is highly flammable and explosive, and its danger depends on the degree of nitrification. Nitrocellulose with a nitrogen content above 12.5% ​​is extremely dangerous and will burn when exposed to fire. When the temperature exceeds 40°C, it can accelerate its decomposition and spontaneous combustion. Although nitrocellulose with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B5/02C08B5/04C08B5/06C08B5/12
CPCC08B5/02C08B5/04C08B5/06C08B5/12
Inventor 徐赟蒋保军宗建山
Owner NANTONG TAILIDA CHEM
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