SU1321446A1 - Gas cleaning apparatus - Google Patents

Abstract

The invention relates to the wet cleaning of gases from mechanical impurities and allows an increase in the degree of gas cleaning and device performance by increasing the surface and phase contact time in an intensive mode and reducing the entrainment of liquid. In the upper part of the device there is a swirler 6, made in the form of a truncated cone, which is installed with its top down. Guides 7 swirlers 6 are made in the form of tubes and are rigidly fixed with the lower end bent outward, on the edge of the cylinder. Purified gas 17 SannjifttK i tai C $ (/) fffeffyiorw in the evening and Pet.i

Description

and the upper end on the reflective cone 8, which is perforated with holes at the junction of the guides 7 with the reflective cone 8, mounted with a gap, relative to the housing. On the rails 7 is installed

The invention relates to devices for contacting a gas or dust-gas stream with a liquid and can be used in chemical, metallurgical and other industries for carrying out various heat and mass transfer processes, in particular for wet gas cleaning from mechanical impurities.

The aim of the invention is to increase the degree of gas purification and the productivity of the device by increasing the surface and the contact time of the phases in an intensive mode and reducing the entrainment of liquid.

FIG. 1 shows the device; incision; ya fig „2 - section aa in figure 1; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 - connection of guides with a reflective cone, axonometrics; in fig. 6 — placement of guides on a cylindrical twist of the spindle, axonometric; in fig. 7 - placement of the inlet in the lower part of the body.

The gas cleaning device includes a housing 1, inside of which a central inlet pipe 2 is placed with a cylindrical spinner 3, made with blades 4 at the end. The central pipe 2 can be made both downward and ascending. Inside the pipe 2 there is a glass 5, made in the form of truncated cones connected by large bases at the level of twisting-Etel 3. In the upper part of the device there is a swirler 6, made in the form of truncated cone set vertex down. Guides 7 swirlers 6 are made in the form of tubes and are rigidly fixed with the lower end bent on

1321446

a partition barrier 10, located at a height between the upper edge of the glass 5 and the swirler base 6. The blades 11 are rigidly attached to the guides 7, made along the triangular profile and fixed on the guides 7 along their base, m. ls, 7 il.

-five

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The gun is on the edge of the cylindrical swirl 3, and the upper end is on the reflective truncated cone 8, which is perforated with the holes 9 at the junction of the guides 7 with the cone 8 installed with a gap relative to the housing. The guides 10 are mounted horizontally with a partition 10 and are placed in height between the upper edge of the cup 5 and the base of the swirler 6. The blades 11 are rigidly attached to the guides 7, made along a triangular profile and fixed on the guides 7 along their bases. Blades 11 form along the height of the swirl section 12-14, respectively, in the zones: cylindrical curler 3 - cup 5 - partition 10 - reflective cone 8. The blades 11 are made with overlap in plan and unidirectional within each section, and have the opposite Board in adjacent sections including a cylindrical zakruchivatel 3. Inlet 15 for gas inlet is rigidly connected to a central inlet pipe 2 and contains within the nozzle 16 for spraying pro- mshochnoy liquid. The inlet 15 can be placed both in the upper and in the lower part of the device p depending on the placement of the central inlet pipe 2. The outlet nozzle 17 for venting cleaned gas is located coaxially in the upper part of the device.

The device works as follows.

The compressed gas enters the device through the inlet 15, is poured by drip moisture sprayed into the stream by the nozzle 16 and moves along the central pipe 2. At

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When entering from the central tube 2, the gas-droplet flow changes the vertical ijoe horizontal movement in the cylindrical swirler 3, passes the blades 4 and twists in a wide zone of the glass 5. At the same time, the flux coming out of the cylindrical twister 3 is replenished with liquid coming from 7 swirl guides

deadbolt 6, which increases the total number-fo Thanks to the fact that the blades 11 are inseparable in the volume of the glass 5 and reduces the flow of fluid for gas cleaning. At the same time, making the lower ends of the guides 7 bent and placed at the edge of the cylindrical twister 3 ensures the ejection of the gravitational-flowing liquid in the guides 7 flowing out of the twister 3, which increases the circulation ratio of the fluid and, therefore, reduces it cleaning expense. Further, the main part of the liquid is thrown by centrifugal forces onto the wall of the glass 5, forming in

It is rotating highly turbulized-25 made in the form of tubes placed

A liquid layer with a continuously renewed contact surface of the phases due to the mixing of swirling gas jets with the liquid. A part of the liquid from the rotating gas-liquid layer drains down the device and is withdrawn from it, and most of the liquid is carried by the gas along the height of the glass 5 and passes the blades 11 of section 12 of the swirler 6. Due to the fact that the blades 11 are made along a triangular profile and are attached to 7 on both sides (bases), there is a non-vortex flow around the guides 7, which is not accompanied by splitting of the fluid when interacting with the blades 11. Thanks to the fact that the blades 4 in the cypindrical twister 3 and the blades 11 in section 12 The slicker 6 has the opposite direction, there is an increase in the flow twist and an intense panel-vortex mode of phase movement in the volume of the swirler 6 is formed, which is limited in height by the partition wall 10, which leads to an increase in the surface and time of the highly efficient phase contact and, consequently, the degree of gas cleaning. Next, gas-liquid

The flow exits the swirler 6 to 55 mounting conditions. If the device is for a sec- tion 13. By the opposite of gas cleaning, it is mounted on the base direction of the blades 11 in section 12 and 13 there is a gain

In other words, pipe 2 is descending. If the device is mounted on

four

the twisting of the flow at the outlet of section 13; wherein the main part of the fluid is thrown onto the housing 1 due to a significant centrifugal effect and drains under the force of gravity down the device from where it is withdrawn. The swirling ascending gas flow with non-separated liquid droplets enters section 14 of the swirler 6.

Chi xi 13 and 14 have the opposite direction, an increase in the flow swirl occurs and the centrifugal force acting on the liquid droplets increases. Under the action of these forces, the final release of liquid droplets from the flow, including fine particles, is deposited on the housing 1 and flows into the space between the housing 1 and the reflective cone 8. Due to the fact that the reflective cone 8 is perforated with openings 9 7, and the guides 7

sloping downward, part of the liquid is transferred from the reflective cone 8 to the volume of the glass 5, thus creating a fluid circulation circuit and reducing, thereby, the necessary flow of fresh liquid for gas cleaning. The rest of the separated liquid from the zone of the reflective cone 8 flows through the gap between the housing 1 down the device. The purified gas flows to the outlet nozzle 17. Due to the fact that the outlet nozzle 17 is located coaxially, the operation of the device is uniform and there is no localized entrainment. The dust-free and liquid-free gas leaves the device in the upper part through paratube 17. I.

It is advisable in some cases to place the inlet 15 at the bottom of the housing. This increases the volume of zones for intensive gas washing and separation, which allows an increase in the degree of gas purification and device efficiency. The implementation of the central inlet pipe 2 downward or ascending is selected from

installation conditions. If the gas cleaning unit is mounted on a foundation

Then pipe 2 is executed according to the installation conditions. If the gas cleaning unit is mounted on a foundation

d se If the device is mounted on

If this is the case, it is advisable that pipe 2 be ascending.

The use of the proposed device in the system of wet dedusting of gases allows to increase the degree of gas purification from fine dust, which contributes to the protection of the environment, to reduce the liquid consumption for washing, which reduces the energy consumption of the cleaning process, to increase the gas phase performance, which reduces its intensity.

Claims (4)

Invention Formula 1 "Gas purification device, including a housing with inlet and outlet nozzles, a central inlet pipe with a cylindrical curler at the end, outside of which is placed a glass in the form of truncated cones connected by large bases located at the level of the curler, a vane swirler and a reflective truncated cone mounted at a distance from the swirler and the walls of the body, characterized in that, in order to increase the gas purification rate and the device performance by increasing the surface of the truncated ōnusa mounted top down, with the guide in the form of tubes, fixed to the lower end of the cylindrical zakruchivatele, upper -. rigidly on the reflective cone, perforated at the connection, and provided with a partition placed on the guide zavihri- bodies with minimal base. the upper cone of the glass and the partition divide the swirler in height into sections, and the blades are rigidly attached to guides with the opposite direction in adjacent sections, f5 with the direction of the blades in the lower section opposite to the direction of the blades in the cylindrical swiveler, the inlet is rigidly connected to the central inlet pipe, and the outlet is placed coaxially with the housing. 2. The device according to claim 1, about tl and - so that the blades of the swirler are made triangular 5 profiles and attached to the base guides. 3. The device according to paragraphs. 1 and 2, which is due to the fact that the lower ends of the swirler guides are bent outward and spread along the edge of the cylindrical twister. 4. The device according to claim 1, about 1 t and the contact time of the phases in the intensive mode and decrease in the entrainment of liquid, the swirler is made in eleven 2 eat that input pav bottom fig.Z ff fPuB. Fig: 5 FIG. 6 7 Editor G. Gerber Compiled by S. Gorinova Tehred I.Popovich Proofreader A. Ilyin Order 2697/4 Circulation 656 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4