SU773389A1 - Method of fire neutralizing of liquid wastes - Google Patents

Description

(54) METHOD FOR FIRE DECOMPOSITION OF LIQUID WASTES

I

The invention relates to methods for the fire disposal of liquid wastes and can be used in chemical plants and other branches of the national economy, where wastewater containing insoluble impurities is formed.

Methods are known for the fire disposal of liquid waste in chamber, cyclone and shaft furnaces, including spraying the waste into the combustion zone, supplying air in an amount necessary for complete incineration, proper disposal of substances, removal of fire treatment products {1.

The disadvantages of the known methods are their complexity and unreliability because of the clogging or destruction of the spraying agents by insoluble impurities of liquid waste, as well as the high cost of the disposal process.

The closest to the invention in its technical essence and the effect achieved is a method of firing neutralization of liquid waste, including the supply of waste to the layer, glowing it with primary air, supplying the fuel-air mixture to the combustion front,

incineration of substances in the presence of oxide of the body, removal of combustion products. In accordance with the features of this method, which excludes the presence of narrow channels for dispersing the medium inherent to the nozzle devices, insoluble impurities in the effluents do not clog the feeding device, which operates according to the principle of passing gas through the liquid volume and then spraying it due to the destruction of surface bubbles 2).

ten

The disadvantage of this method is the impossibility of fire treatment of liquid waste containing insoluble impurities, the concentration of which is more than C 0.1 kg / kg. In the layer of gas bubbled suspension, there is an uneven distribution of solid inclusions along the height of the three-phase system. Since the concentration of the solid phase in the bubbling layer, depending on the initial conditions, is 2-6 times higher than the concentration of solid particles in the liquid waste stream entering the decontamination bath, then at the initial concentration of solid particles (average size cl ..- OO µm) more soo

5 7733896

home combustion in secondary air. Sources of information

characterized in that, in order to take into account in the examination of the increase in the intensity, reliability and non-adherence of the process of decontamination of liquid from-i Thermal methods of disposal of waste containing insoluble impurities, 5 moves. Ed. Bogushevskaya K.K., et al. L., part of the primary air in the amount of 30–40% Chemie, 1975, p. 176. sent to the upper boundary of the bubbling

Layer perpendicular to the main trans-2. USSR author's certificate N 189503,

primary air at a speed of 20-30 m / s.kl. F 23 G 5/02, 1965.

Claims (2)

Hom, incineration in a secondary air flow, characterized in that, in order to increase the intensity, reliability and continuity of the disposal process of liquid waste containing insoluble impurities, a portion of primary air in an amount of 30-40% is directed to the upper boundary of the bubbling layer perpendicular to the primary air flow at a speed of 20-30 m / s. 6 Information sources, taken into account in the examination 1. Thermal methods of neutralization of 5 moves. Ed. Bogushevskoy K.K. and others. L., Chemistry, 1975, p. 176. 2. USSR author's certificate Ν * 189503, cl. R 23 6 5/02, 1965.