RU2131292C1 - Dust-laden gas cleaner - Google Patents

Abstract

FIELD: gas cleaning. SUBSTANCE: axial space of device stack assembled of thin-sheet corrugated rings provided with fluid spraying nozzles communicates with inlet pipe connection filled with dust-laden gas and through ring- to-ring clearances, with outlet pipe connection; rings have concentric corrugations of arbitrary shape and are spaced apart at arbitrary distance; ring-to-ring clearance δ < 0,5 A is smaller than 0.5 A, where A is corrugation amplitude; stack is mounted inside louver-type separating screen. EFFECT: improved cleaning efficiency. 3 dwg

Description

 The invention relates to the purification of gases.

 A device is known for wet cleaning of dusty gases, comprising a packet of thin disks mounted on a shaft rotatably, a bath with a wetting liquid, and a vibrator that informs the axial vibrations of the packet (ed. St. USSR N 223766, class B 01 D 45/10 , 1968).

A disadvantage of the known device is the following:
- with a flat disk configuration, there is a high probability of radial leakage of dust particles through the separator.

- the use of a vibrator for axial vibrations of the disks unreasonably complicates the design. Moreover, disk vibrations are ineffective for trapping fine dust,
- filling with liquid of half of the separator body halves the working contact surface of the latter.

 It is also known a device for cleaning dust-containing gases using a centrifugal separator formed by a package of thin-sheet disks mounted on a perforated shaft rotatably (WO 95/04587 A1, B 01 D 50/00, 1995).

 The disadvantage of this device is the design complexity and inefficiency of extraction of fine dust.

 The task of the invention is to simplify the design and increase the cleaning efficiency.

 The problem is solved due to the fact that the device for cleaning dusty gases contains a packet of thin-sheet corrugated rings mounted on a carrier disk and mounted in a rotary shaft housing, as well as a wetting system for rings, an inlet and outlet pipe for the gas to be cleaned, and a pipe for discharging contaminated liquids. In the central part of the package, the rings form an axial cavity equipped with liquid injecting nozzles and connected to the inlet port of dusty gases, and by means of inter-ring gaps, with the outlet nozzle, the rings being made with concentric corrugations of any shape with any step and installed with a gap δ <0.5 A is relative to each other, and where A is the amplitude of the corrugation. Outside, the package is surrounded by a louvered separation screen.

 The problem is solved by organizing the radial flow of dusty gas in contact with the particles of the wetting fluid in the field of centrifugal forces and in the labyrinths of the narrow channels of the wetted mass transfer nozzle formed by a packet of closely spaced corrugated rings.

 At the same time, the corrugations of adjacent rings mutually overlap the radial movement of dust and liquid particles in the separator, reducing the likelihood of radial breakthrough, causing numerous collisions of water and dust particles both between themselves and with the wetted surface of the rings, which ensures effective dust binding.

 In FIG. 1 shows a diagram of a device for cleaning dusty gases.

 In FIG. 2 - same, view along AA.

 In FIG. 3 - the relative position of the ring corrugations.

 A device for cleaning dusty gases contains a packet of thin-sheet corrugated rings 1, mounted on a supporting disk 2 with the possibility of rotation on the shaft 3. The rings have concentric corrugations of any shape with any step and are installed with a gap δ <0.5 A relative to each other.

 In the central part of the packet, the rings form an axial cavity in which nozzles 4 for injecting a wetting liquid are placed.

 Outside, the package is surrounded by a cylindrical louvre separation screen 5. The entire device is placed in the housing 6 with input 7 and output 8 nozzles, as well as a tube 9 for draining contaminated liquid. Washers are used to distance the rings.

 The device operates as follows. Dusty gas enters through the pipe 7 into the axial cavity of the package of corrugated rings 1, which perform the function of a mass transfer nozzle. A wetting liquid is injected here through nozzles 4, which irrigates the gas to be cleaned, and then, along with the dust and gas stream, gets carried inside the bag, moistens the surface of the rings, on which the remaining dust is deposited from the stream.

 Leaving the rotating packet of rings, the flow is separated by a louvre separator 5 into purified gas and contaminated liquid. Gas is discharged through the pipe 8, and the liquid through the pipe 9.

 Due to the constant wetting and the action of centrifugal force, the surface of the disks is cleaned of deposits of contaminants.

 At present, an experimental prototype of the plant has been manufactured and tested at the Institute of Industrial Physics and Technology SB RAS. Tests have confirmed the effectiveness of cleaning dusty gases of the proposed device.

Claims (1)

 A device for cleaning dusty gases, comprising a housing in which a packet of thin-sheet corrugated rings forming an axial cavity and mounted on a carrier disk with a gap between the rings, liquid-injecting nozzles, an inlet and an outlet nozzle for the gas to be cleaned, characterized in that that the liquid-injecting nozzles are located in the axial cavity of the packet associated with the inlet pipe of the dusty gases, and through the inter-ring gaps with the outlet pipe, the rings being made with entricheskimi corrugations of any shape with any pitch and fitted with a gap δ <0,5 A with respect to each other, wherein A - amplitude of the corrugation, the outside of the package is surrounded by the separating louvered screen.

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