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A slurry method production process of nitrocellulose for indoor fireworks

A production process and technology of nitrocellulose, applied in the direction of nitration explosive components, explosive processing equipment, explosives, etc., can solve the problems of low bulk density, large particle size, low production efficiency, etc., and achieve industrialization with small investment, high bulk density, easy to control effects

Active Publication Date: 2021-05-04
SICHUAN NITROCELLULOSE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The screened nitrocellulose fine powder can be used in the production of some indoor environment-friendly fireworks, but the production efficiency is low-cost and high, and the stability of dry or heated storage is poor, and there is a big safety hazard; in addition, most of the The appearance of nitrocellulose products is mainly fibrous, the particle size is large and the bulk density is low, and it cannot be fully mixed with the effective medicine of indoor fireworks, so it cannot be directly used in the production of indoor fireworks

Method used

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  • A slurry method production process of nitrocellulose for indoor fireworks
  • A slurry method production process of nitrocellulose for indoor fireworks
  • A slurry method production process of nitrocellulose for indoor fireworks

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preparation example Construction

[0027] At present, the preparation process of nitrocellulose is mainly as follows: Refined cotton and mixed acid undergo nitration reaction to produce acid nitrocellulose, which is centrifuged to drive acid, then dropped into a washing machine for stirring and washing, and then pumped into a washing bucket through a cotton pump for stabilization and dehydration. Sticky, after rinsing and mixing, sampling and analysis of product quality is qualified, and finally packaged after being dehydrated by a piston pusher centrifuge. It can be seen that the first half of the nitrocellulose preparation process is carried out in a large amount of water, and the second half is the alcoholization and dehydration process. The present invention occurs after boiling and washing, such as figure 1 Shown, a kind of slurry method production technique of indoor fireworks with nitrocellulose, comprises the following steps:

[0028] (1) Pulping: add the solution boiled and washed in the nitrocellulos...

Embodiment

[0037] The following table is the design of each parameter in the pulping process of embodiment 1-3 and matched group 1-2:

[0038]

[0039] The following table is the design of each parameter in the preparation process of embodiment 1-3 and control group 1-2 defibrillation agent:

[0040]

[0041] The following table is the design of each parameter in the granulation process of embodiment 1-3 and matched group 1-2:

[0042] Feeding time / min Stirring speedr / min Stirring time / h Heating temperature / ℃ Holding time / h Example 1 10 700 0.5 50 1 Example 2 20 800 1 80 2 Example 3 30 900 2 100 3 Control group 1 5 500 0.2 30 0.5 Control group 2 40 1000 3 120 4

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Abstract

The invention discloses a slurry production process of nitrocellulose for indoor fireworks, which comprises the following steps: (1) pulping: adding the nitrocellulose after cooking and washing in the nitrocellulose production process into a reaction kettle, and adjusting the reaction kettle. The mass concentration of nitrocellulose is 2-25%, and the slurry is obtained by stirring; (2) Defibrating agent preparation: the solvent, stabilizer, and phlegmatizer are mixed evenly to obtain the defibrating agent; (3) Granulation: the defibrating agent is mixed Add into the slurry, stir and heat up and then keep warm to obtain hardened nitrocellulose material; (4) pulverize and dehydrate the nitrocellulose material to remove the mother liquor to obtain nitrocellulose for indoor fireworks. The nitrocellulose for indoor fireworks obtained by the invention has good stability, high bulk density after defibrillation, and the particle size meets the use requirements of mixing chemicals and filling indoor fireworks in the production process of indoor fireworks; The gas is nitrogen, and there is no smoke or sulfur in the discharge gas, which can meet the environmental protection requirements of indoor fireworks.

Description

technical field [0001] The invention belongs to the field of fireworks and firecrackers, in particular to a production process of nitrocellulose for indoor fireworks. Background technique [0002] Indoor fireworks are also called cold light fireworks (also known as cold fireworks, cold fireworks), which are environmentally friendly fireworks of the micro (no) smoke spray type. Cold fireworks have a low ignition point, the ignition point is 60°C-80°C, the external temperature is 30°C-50°C, no harm to the human body, suitable for stage performances and various modeling designs. Its products mainly include stage fireworks, cake fireworks, hand-held fireworks, ground fireworks and film and television special effects fireworks, etc. Indoor fireworks on the market adopt a new formula, mainly using decommissioned single-base powder instead of black powder, which can maintain the ornamental effect of traditional fireworks, and there is no smoke when it is set off, less residual dus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B25/00C06B21/00C08B5/04
CPCC06B21/00C06B25/00C08B5/04
Inventor 张仁旭阳洪袁满赵利斌
Owner SICHUAN NITROCELLULOSE CORP