RU2400289C2 - Device for gas scrubbing from dust - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to devices for gas exhausts scrubbing from dust, absorption and other heat and mass exchange processes and may be used in heat power engineering, metallurgy, construction and other industry fields to perform technological processes and to solve environmental issues. Device comprises lower 2 and upper 1 part of device, nozzles of liquid and gas supply and drain, plate 9, nozzle 12 of liquid overflow from plate to lower part of device, vortex contact device 3, made of cover 6, bottom 5, plates 4 and separator 7. In bottom of vortex contact device in paraxial area there is a nozzle 8 for liquid supply from lower part of device into inner area of vortex contact device.

EFFECT: improved efficiency of gas scrubbing from dust at low hydraulic resistance and without forced transportation of liquid, simplified design of device, increased reliability of its designing and simplified operation.

2 dwg

Description

The invention relates to devices for carrying out the process of cleaning gas emissions from dust, absorption and other heat and mass transfer processes and can be used in the power industry, metallurgy, chemical, construction and other industries for carrying out technological processes and solving environmental problems.

A dust collector is known, comprising a housing divided by a partition into two chambers, a lower and an upper tangential nozzle for introducing a gas to be purified into a lower chamber equipped with a swirl and a liquid tank, an axial tube for removing a gas-liquid flow into the upper chamber, in which a droplet eliminator is installed, a nozzle for drainage of the separated liquid with trapped dust and a nozzle for removing purified gas (USSR Author's Certificate No. 577045, M.cl. B01D 47/02, BI No. 39, 10/25/1977).

The disadvantage of this dust collector is the complexity of the design, the need for forced transportation of fluid into the apparatus.

The objective of the invention is to develop a device for cleaning gas emissions from dust, operating with high efficiency with low hydraulic resistance and without forced transport of liquid, simplifying the design of the device, increasing the reliability of its design and simplifying operation.

The problem is achieved in that in a device for cleaning gases from dust, including the lower and upper part of the apparatus, nozzles for supplying and discharging liquid and gas, a plate, a nozzle for transferring liquid from a plate to the lower part of the apparatus, a vortex contact device consisting of a cover, a bottom , plates and separator, in the bottom of the vortex contact device in the axial region there is a nozzle for supplying fluid from the lower part of the apparatus to the inner region of the vortex contact device.

The invention is illustrated by drawings, which show a longitudinal section of the device (figure 1) and section AA (figure 2).

The device contains the upper part of the apparatus - 1; the lower part of the apparatus is 2; vortex contact device (VKU) - 3, including plates - 4, bottom - 5, cover - 6, separator - 7 and pipe for supplying fluid to its inner region - 8; a plate - 9; gas supply and exhaust pipes - 10 and 11; a fluid flow pipe from a plate to the bottom of the apparatus - 12; fluid inlet and outlet pipe - 13 and 14.

The device operates as follows. The gas stream through the tangential pipe 10 enters the lower part of the apparatus 2 of a cylindrical shape, where the initial interaction of the dust and gas stream with the surface of the liquid occurs. The liquid under the action of friction against the gas stream is brought into rotation, forming an additional zone of contact with the gas stream, while large particles are wetted and separated. Further, the gas flow passing between the plates 4 VKU, 3 is twisted, forming a vacuum in the axial region. Due to the rarefaction, liquid is transported through the pipe 8 from the lower part of the apparatus 2. The main interaction of the components occurs in the ICU, in which solid particles or other impurities pass from the gas stream to the liquid. Then, the liquid with trapped solid impurities, passing through the VKU separator 7, passes from the sprayed state to the film state, is separated from the gas stream, flows onto the plate 9 and flows through the transfer nozzle 12 to the lower part of the apparatus 2. After clarification, the liquid again enters into interaction with the VKU 3, forming a closed loop. Solid particles are deposited in the lower part of the apparatus and in the form of sludge are removed through the pipe 14 for disposal or as intended. The cleaned gas stream is discharged from the upper part of the apparatus through the nozzle 11. The liquid is supplied to the apparatus through the nozzle 13. The device can operate both in continuous and periodic mode.

The advantages of this invention are efficient dust cleaning of the gas, low hydraulic resistance, the absence of moving parts and the need for forced transportation of liquid, simple design and scalability of the device.

Claims (1)

A device for cleaning gases from dust, including the lower and upper part of the apparatus, nozzles for supplying and discharging liquid and gas, a plate, a nozzle for transferring liquid from a plate to the bottom of the apparatus, a vortex contact device consisting of a cover, a bottom, plates and a separator, characterized in that in the bottom of the vortex contact device in the axial region there is a pipe for supplying liquid from the lower part of the apparatus to the inner region of the vortex contact device.

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