SU903659A1 - Apparatus for thermic cleaning of sewage - Google Patents

Description

one

The invention relates to wastewater treatment plants using a thermal method and can be used in the chemical, petrochemical and other industries.

Known devices for thermal treatment of wastewater, containing the evaporator SP and 1.21.

The drawbacks of the devices are their low productivity, large dimensions, high specific fuel consumption, design complexity and significant removal of mineral salts by flue gases.

The closest to the proposed technical essence and the achieved result is a device for thermal wastewater treatment, containing a fiery furnace, a container located under the furnace and connected to it with a pipe, and a feed pipe located in the NW tank.

The drawback of the device is the low efficiency of flue gas cleaning from mineral salts and ash due to the absence of gas flow splitting at the entrance of the flue gases into the tank, a small specific contact surface of the gas and liquid phases, which also leads to significant drip flue.

The purpose of the invention is to increase the efficiency of the device.

Set Goal Achieved

10 that the device for thermal cleaning -. The waste water tank, containing a fiery furnace and placed under the furnace, a container connected to it with a concentrator with feed pipe, is equipped with a distribution perforated plate attached to the connecting pipe and filled with a truncated cone, the larger diameter of which is

Claims (1)

20 0.950.98 of the diameter of the tank, the taper at the base is 25, while the feed nozzle is located in the cavity of the connecting pipe and is installed above its lower section. The diameter of the perforations of the distributor plate is 0.01-0, the diameter of the connecting pipe. Distributive perforated plate increases the specific surface of the contact of flue gases with liquid and provides effective cleaning of ash and salt from gases, reduces drip entrainment. The taper of the tray facilitates continuous removal of concentrate from the surface into the lower settling zone and eliminates the deposition of salts. The distribution plate is made with a taper at the base. An increase in the angle of taper of more than kO, as well as a decrease in it less than 25 °, leads to a decrease in the degree of gas cleaning and an increase in drip entrainment. The optimal size of the larger cone diameter is 0.95-0.98 of the diameter of the tank. A decrease in this ratio leads to a decrease in the degree of purification of gases from salts, and an increase in it contributes to the deposition of salts on the plate. The perforation diameter of the distributor plate is 0.01-0.0 diameter of the connecting pipe. Perform perforation diameter less than 0.01 of the diameter of the connecting pipe leads to an increase in drift entrainment. An increase in the perforation diameter of more than O.Ot of the diameter of the connecting pipe causes a decrease in the intensity of evaporation of the liquid in the container - concentrator. The branch pipe for feeding the tank with standing water with access to the cavity of the connecting pipe above its lower section opposite to the movement of the flue gases makes it possible to maximize the oxidizing ability of the flue gases, therefore, to concentrate the salt solutions containing organic volatile substances. the level of the cut-off of the connecting pipe or leads to a decrease in the degree of disposal of wastewater. The drawing shows a device for thermal treatment of wastewater. A device for thermal wastewater treatment contains a cyclone chamber 1 equipped with a wastewater tank 2, a pipe 3 connecting the outlet of the cyclone chamber 1 with a tank 2 wastewater, which is equipped with a perforated distribution plate made in the form of a truncated cone and branch pipe 3Capacity 2 for wastewater, supplied with fittings 6 and 7. The device operates as follows. In the cyclone chamber 1, hot mixture and liquid waste intended for fire neutralization are supplied. The flue gases and the melt of mineral salts with a temperature of 800-POO ° C pass through the connecting pipe 3 into the tank 2 for wastewater, where they give up their heat to the concentrated waste. The flue gases along the way are in contact with the waste water supplied through the nozzle 5 into the cavity of the connecting pipe. 3 Part of the organic matter burns out and the water evaporates. After the connecting pipe 3, the vapor-gas mixture enters the perforated distributor plate i, where it contacts with the evaporated liquid, is freed from salts and ash, and cools down. fitting 7 is supplied to condensate. The design of the device provides the most complete utilization of the heat of combustion of the fuel while simultaneously burning and evaporating the wastewater, which makes it possible to reduce the specific consumption of reference fuel from 250–300 to 90–110 kg / m. The efficiency of flue gas cleaning from dust. The effect of using the oxidizing ability of flue gases to burn organic matter from the string water into the tank is kQ-70%. The quality of the condensate obtained from the vapor gas can be used for technical purposes. Claim 1, A device for thermal treatment of wastewater, containing a fiery furnace and placed under the furnace, a container connected to it with a tube with a feed pipe, in order to increase the efficiency of the device (1 |);