SU959807A1 - Scrubbing apparatus - Google Patents

Description

(54) APPARATUS FOR WET GAS CLEANING

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The invention is intended for the wet scrubbing of gases from suspended particles and can be used in the chemical, metallurgical, engineering and other industries.

A device for wet gas cleaning is known, comprising a cylindrical body with a tangential, inlet and outlet nozzles, a spiral arrangement with resilient barriers installed at the bottom and an exhaust pipe made of concentric cylinders with holes alternating in height 1.

However, this device has a low operating efficiency due to the small contact surface of the gas flow to be cleaned with a liquid and the difficulty of discharging sediment when working with insoluble and poorly soluble dust due to poor circulation of the liquid inside the apparatus.

The closest in technical essence and the achieved result to the invention is an apparatus for wet gas cleaning, including a housing with a bottom, a lid in the shape of a semicylinder, inlet, exhaust pipe, drain fitting, installed in the housing with S-shaped and reflective baffles, guiding element and spiral nozzle 2.

A disadvantage of the known device is the difficulty of removing sludge when working with insoluble and hardly soluble dust. The circulation of fluid that occurs in the apparatus does not allow for intensive mixing of the fluid, which ensures the even distribution of dust throughout the apparatus, to which the fluid is occupied. Usually, a precipitate of insoluble and sparingly soluble dust accumulates in this part of the apparatus and, when the gas flow is very dusty, clogs the sludge line withdrawing from the apparatus, which leads to periodic shutdowns of the apparatus for cleaning and, consequently, a decrease in its productivity.

Claims (1)

Uneven mixing of collected dust in the volume of the apparatus filled with liquid prevents the removal of sludge through the overflow line, which entails the presence of such unreliable units in the apparatus that require special maintenance personnel, such as a fluid level regulator in the apparatus and a sludge discharger. The presence of a partition in the inlet pipe in some modes leads to the overgrowing of its inner surface with dust sediment due to the redistribution of speeds and insufficient kinetic energy of the gas flow, which also entails periodic stops of the apparatus for its cleaning and, consequently, to a decrease in its performance. The purpose of the invention is to increase the productivity of the apparatus. This goal is achieved by the fact that in an apparatus for wet gas cleaning, including a housing with a bottom, a lid in the shape of a half cylinder, an inlet, an exhaust pipe, a drain valve installed in the housing is S-shaped and a baffle plate, a guide element and a spiral nozzle, the bottom is made involute, the apparatus is provided with an additional plate that repeats the shape of the involute bottom, connected to the S-shaped partition and inclined to the horizontal at an angle of 50-55 °; the additional plate is set at a distance from the bottom h (0.1 - 0.15) R, where R is the radius of the half-cylinder of the lid, the reflective partition is installed at an angle of 50-55 ° to the horizontal, the drain valve is located on the side wall of the housing. Moreover, the inlet is made in the form of confuser. FIG. 1 shows an apparatus for wet gas cleaning, a slit; in fig. 2 - the same, top view. The apparatus includes a housing 1 with a bottom 2 in the form of an involute. A spiral nozzle 3 is installed inside the body. The spiral nozzle can be made in the form of a single or multi-way helix, fixed in the body of the apparatus and immersed in liquid, with which the apparatus is filled. The device is equipped with a guiding element 4, a baffle 5 installed at an angle of 50-55 °, and a cover b made in the form of semi-cylinders. The device has an inclined inlet nozzle in the form of a confuser 7, an S-shaped partition 8 connected to an inclined plate 9 inclined to the horizontal at an angle of 50-55 ° and an additional plate reproducing the shape of the bottom 10 installed from it at a distance h (0 , 1-0.15) R where R is the radius of the half-cylinder of the lid. Drain fitting 11 is located on the side wall of the apparatus at the height of the liquid level r it. The lid b above the S-shaped partition is made in the shape of a semi-cylinder. Fluid into the apparatus is fed through the nozzle 12, and the sludge is discharged through the drain fitting 11. The cleaned gas is removed from the apparatus through the exhaust pipe 13. The apparatus works as follows. The gas to be cleaned through the inlet pipe 7 enters the apparatus, aerates the fluid layer and with it rises along the S-shaped partition 8 upwards, drastically changes the direction of movement and enters the half-cylinder (under the cover) with radius R, twists and hits about the surface of the liquid. The gas flow reflected from the surface of the liquid by the baffle 5 is directed upwards and then guiding element 4 is again directed to the surface of the liquid. The side helix walls of the nozzle 3 narrow the channel section and the gas flow is introduced tangentially into the exhaust pipe 13, where the spray leaving the spiral nozzles is subjected to final separation. The trapped dust in the apparatus flows into the bottom of the apparatus, where it is picked up by a fluid flow moving in the channel between the bottom and the plate reproducing its shape, and is uniformly stirred in the apparatus filled with fluid and discharged through the drain valve 11. Fluid is supplied through the brush 12 located at the bottom of the apparatus. The use of the proposed apparatus for wet gas cleaning provides an increase in the productivity of the apparatus due to the elimination of downtime for cleaning, in addition, conditions are improved for removing the sediment due to uniform movement of the collected dust in the apparatus filled with liquid, and also simplifies the design and reduces the metal of the dismantling of unloading units ... go ... „„. ,, „„ .. ,, 0, - „„ „of the switch and the level controller. 1. Gas scrubbing apparatus, comprising a housing with a bottom, a lid in the shape of a semicylinder, an inlet, an exhaust pipe, a drain nipple installed in the S-shaped and reflective baffles, a guiding element and a spiral nozzle, characterized by that, in order to increase the productivity of the apparatus, the bottom is made involute, the apparatus is provided with an additional plate that repeats the shape of the involute bottom, connected to the S-shaped partition and inclined to the horizontal at an angle scrap 50-55 °, the additional plate is installed at a distance from the bottom h (0.1-0.15) R, where R is the radius of the half-cylinder of the lid, the reflective partition is set at an angle of 50-55 ° to the horizontal, the drain fitting is located on the side wall housing.