SU983419A1 - Electric furnace for roasting carbon based materials - Google Patents

Description

154) ELECTRIC OVEN FOR BURNING MATERIALS BASED ON

CARBON

The invention relates to devices for the manufacture of products based on carbon, in particular for firing these products in a controlled atmosphere, and can be applied in the electrode and other sectors of the national economy.

A device for carbonizing carbon-containing articles, a holding furnace with heaters, and a reaction chamber with a lid, equipped with a capillary tube for diverting volatile materials, are known.

The disadvantage of this device is the additional power consumption, and the lack of disposal of flue gases from resinous plants, which requires the cost of cleaning them.

Closest to the proposed technical entity is an electric furnace for firing carbon-based materials, containing a sealed chamber with main heaters and a lid, a container, a nozzle with additional heaters, and a nozzle of waste gases 2.

A disadvantage of the known device is the additional power consumption for heating the furnace, since

cracking reactions. are endothermic. and oxidation reactions are exothermic, as well as insufficient decontamination of waste gases from resinous substances in the packing layer, since the cracking of polycyclic aromatic hydrocarbons goes with cleavage of alkyl residues, while to the need for its subsequent regeneration. Therefore, when applying the known device requires additional consumption

15 electricity to support cracking reactions as well as to regenerate the packing. Additional costs are required to clean the waste gases from resinous vegetation.

20

The aim of the invention is to reduce the cost of electricity for heating the furnace and improve working conditions by reducing the content of tar in the waste gases, reducing the cost of cleaning them.

Claims (2)

This goal is achieved by the fact that an electric furnace for firing carbon-based materials containing a hot chamber with heaters and a lid, a container, a nozzle with additional heaters, and an exhaust gas nozzle, are provided with a distribution nozzle placed in the nozzle layer. an air divider that can be made in the form of a perforated tube of heat-resistant material. In addition to the topo, the furnace is equipped with a nozzle for supplying inert gas, the iKOToporo inlet with the inlet of the air bodies is placed inside the nozzle of the gas. The drawing schematically shows the proposed electric furnace. The electric furnace includes an airtight chamber 1 with a lid 2, main heaters 3 installed externally, container 4 for material being placed 5, nozzle b with additional heaters 1, air distributor 8, inert gas supply nozzle 9, outlet 1 for exiting gases, and the input 11 of the inert gas supply nozzle and the air distributor input are located inside the nozzle 10 of the exhaust gases. . The electric works as follows. When the sealed chamber 1 is heated with the help of the main heaters 3, the carbon-based material 5 is burned in an inert gas, which is supplied through the pipe 9, the material is placed in the container 4. When fired, resinous substances are released, which fall into the layer nozzle b, heated until the autothermal mode reaches the additional heaters 7, where the air flows through the distributor 8. At the same time on the layer of the nozzle at a certain temperature in the presence of oxygen of the air there is an afterburning of resinous substances to carbon dioxide and water. The neutralized waste gases are discharged through the nozzle 10, thereby heating the supply air and inert gas. The proposed device makes it possible to reduce the cost of electricity for heating the furnace, to improve the working conditions by reducing the content of resinous substances in waste gases, and to reduce the cost of cleaning them. Claim 1. An electric furnace for firing carbon-based rials containing a sealed chamber with heaters and a lid, a container, a nozzle with additional heaters, and a nozzle of exhaust gases, in order to reduce electricity costs, for heating the furnace, improving working conditions by reducing the content of resinous substances in the exhaust gases, reducing the cost of cleaning them, it is equipped with an air distributor placed in the nozzle layer. 2. Electric furnace according to claim 1, characterized in that the air distributor is made in a perforated pipe of heat-resistant material; 3. Electric furnace according to claim 1, which is supplied with a pipe so that it is provided with an inert gas supply pipe, the inlet of which, together with the air inlet distributor, is located inside the exhaust gas pipe. Sources of information taken into account in the examination 1. The author's certificate of the USSR 661213, cl. F 27 В 3/08, 1979. 2. USSR author's certificate number 606074, cl. F 27 B 5/00, 1978 1 prototype).