RU2323959C2 - Method of utilization of nitrocellulose propellant - Google Patents

Abstract

FIELD: production methods.

SUBSTANCE: in the method of utilization of the nitrocellulose propellant it is used the device which includes the chamber for propellant gasification, loading device, electro-fired fisting, discharge valve and the devices for registration. During gasification it is generated up to 80% fired components CO and Н₂, and carbon dioxide, the vapor and azoth.

EFFECT: invention allows utilizing the aged propellant with obtaining the source of energy.

1 dwg

Description

The invention relates to methods for burning solid fuel and can be used for the disposal of nitrocellulose powders.

According to the data, up to 400 thousand tons of nitrocellulose powders are to be disposed of annually. Most of the gunpowder is burned, which is harmful to the environment. Due to the variety of forms, sizes and compositions of gunpowders, a limited number of technologies have been developed that have used obsolete gunpowder [1]:

1) use as industrial explosives;

2) obtaining ultrafine artificial diamonds and superhard materials;

3) obtaining varnishes, paints and polymeric materials;

4) processing of old gunpowder into gunpowder for small arms;

5) the manufacture of elongated cumulative charges to solve various national economic problems;

6) as a raw material for industrial products;

7) in drilling and blasting when drilling wells in the ground. A universal method for utilization of nitrocellulose powders is proposed, regardless of the physical characteristics and chemical properties of the powder elements by gasifying them [2] in a special installation for the purpose of further use of the obtained powder synthesis gas [3]. The prototype of this invention is the invention RU 2093501 (class C06B 21/00), 1997 [2].

The installation for gasification of nitrocellulose powders is a thick-walled combustion chamber 3 with a charging device 6 and an exhaust valve 1. Recording equipment 2 is connected to the exhaust valve. Ignition of the gun powder 4 is carried out using a bridge type igniter 5, which is attached to an electrically igniter assembly 7. The assembled electri igniter assembly is screwed onto boot device.

Nitrocellulose powder in bundles is loaded into the combustion chamber through a loading device. For reliable ignition of the samples of nitrocellulose powders, an igniter is manufactured. The igniter consists of a constantan wire placed in a plain bag with smoky gunpowder.

The igniter is connected to the contacts of the electric igniter assembly. The igniter assembly is screwed onto the loading device. The outer ends of the ignition unit electrodes are connected to a power source.

When a voltage (U = 12 V) is applied to the contacts of an electric igniter, the bridge of constantan wire is heated and the smoke of gunpowder is ignited. Solid burning particles of smoke powder ignite a sample of nitrocellulose powder. The result is a powdery synthesis gas containing 80% vol. Of the combustible components CO and H ₂ , as well as carbon dioxide, water vapor and nitrogen (the results were obtained by chromatographic analysis of the gas mixture).

The resulting powder synthesis gas is combustible, which makes it possible to use it as a cheap gaseous energy source.

Powder synthesis gas is slightly inferior to acetylene in terms of energy characteristics, but surpasses it by 5 times during the evaluation of economic efficiency.

The proposed method allows the utilization of nitrocellulose powders to obtain a new gaseous energy source, which can find application both in industry and in everyday life.

Used Books

1. Schukin Yu.G., Kutuzov BN, Tatishchev Yu.A. Industrial explosives based on disposable ammunition. - M .: Nedra, 1998 .-- 319 p.

2. Patent RU 2093501, cl. C06B 21/00, 1997 .-- 6 p.

3. Isserling A.S. Basics of burning gas fuel: A reference guide. - L .: Nedra, 1987 .-- 336 p.

Claims (1)

A method for the disposal of nitrocellulose powders that have served their specified service lives, characterized in that they use a plant that includes a chamber for gasification of gunpowder, a loading device, an electric ignition unit, an exhaust valve and recording equipment, and up to 80% of combustible components of CO and H _{2 are} formed during gasification, and also carbon dioxide, water vapor and nitrogen.