SU771429A1 - Cupola for melting mineral raw - Google Patents

Description

night gases, pipe 16 for discharging sludge and dust from bins 11 and 12.

The device works as follows.

Waste cupola gases, having a temperature in the body of the cupola and containing polydisperse dust, are twisted by a swirler 3 installed in the upper part of the body. and a small fraction with a gas stream, changing its direction. due to installation in the upper part of the body of the bump stop 3, it enters the dust extraction device, where the liquid is poured in the bunker 11, and distribution and 9 and mixing chambers 5 are attached to it. The annular contact assembly of the distribution chamber, then the water-gas mixture enters the confuser 8, the throat 7 and the diffuser 14, the effect of the Venturi tube is formed and the gas is cleaned of dust. But at high gas velocities (50-70 m / s) in the flow area of the contact node of the distribution chamber, the liquid in the distribution chamber 9 will be pressed and the device will work like a dry Contact node, i.e. the liquid will not eject into the throat 7 of the contact node Therefore, the mixing chamber 5 is considered. The higher the speed at the upper edge of the distribution chamber 9, the more liquid will be ejected from the mixing chamber 5 and fed to the throat 7. Thus, at high gas velocities at the upper edge of the chamber 9 edeleni device will operate effectively. The presence of a water bath in the bunker 11 will lead to the formation of steam, and since the cupola gases contain carbon monoxide and high temperature, favorable conditions are created for the conversion of carbon monoxide to water vapor, i.e.

to clean the gas from carbon monoxide.

At the exit of the diffuser b scooguli- Dust and droplets of moisture are dropped on the bump stop 3 and through the nozzle

10 are fed into the hopper 11. Due to the ejection created by the nozzle 4, the purified gases are emitted into the atmosphere. Since the cupola gases do not have a constant volume, it is necessary to maintain a constant gas velocity.

in the flow section of the contact unit, and this is achieved by changing the flow area by raising or lowering the baffle 3 with the device 13. In order for the liquid from the hopper

11 did not fall into the housing 1. of the cupola; an overflow 14 is provided, and the hopper 12 has a second purpose: it prevents liquid from entering the housing 1 of the cupola. Through pipe 16, the slurry is discharged to slag granulation. The feed liquid in the bunker is by known methods.

The invention allows to have a high efficiency of gas cleaning from dust with a low specific consumption of water.

Claims (2)

1. A cupola for smelting mineral raw materials, comprising a housing and a swirler, characterized in that, in order to reduce the specific water consumption for cleaning cupola-shaped gases, it is equipped with a dust bin installed coaxially with the housing and a liquid-filled sludge hopper with immersed in it, a distribution chamber and a mixing chamber, as well as a bump stop with a pipe for discharging the sludge placed in the upper part of the housing. 2. A cupola | software p. 1, characterized by the fact that the bump stop is made with the possibility of raising and lowering. Sources of information taken into account in the examination 1. USSR author's certificate number 107655, cl. F 27 1/10, 1956. 2. USSR author's certificate  609045, cl. F 27 1/00, 1976 (prototype). 75 76