RU168908U1 - Device for rinsing and cooling of outlet sulfur gases - Google Patents

Device for rinsing and cooling of outlet sulfur gases Download PDF

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Publication number
RU168908U1
RU168908U1 RU2016138875U RU2016138875U RU168908U1 RU 168908 U1 RU168908 U1 RU 168908U1 RU 2016138875 U RU2016138875 U RU 2016138875U RU 2016138875 U RU2016138875 U RU 2016138875U RU 168908 U1 RU168908 U1 RU 168908U1
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RU
Russia
Prior art keywords
gas
vertical
liquid
annular
impurities
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Application number
RU2016138875U
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Russian (ru)
Inventor
Кирилл Сергеевич Паникаровских
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Кирилл Сергеевич Паникаровских
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Priority to RU2016138875U priority Critical patent/RU168908U1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06Spray cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/10Venturi scrubbers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/027Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by directing the gas to be cleaned essentially tangential to the liquid surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/16Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid

Abstract

The utility model relates to sulfuric acid production, in which sulfur dioxide gases from non-ferrous metallurgy enterprises are disposed of, and can be used for wet purification of sulfur dioxide from harmful impurities (dust, As, F compounds, sublimates of metals, etc.). Sulfur washing and cooling apparatus of gases includes a housing filled with liquid, a cover with an inlet pipe and nozzle for irrigation and a gas outlet fitting, a vertical annular partition is placed in the housing, to the bottom of which is attached at an angle to the mountains zontali annular disc, on vertical vanes tangentially opening onto the upper surface of the lower annular disc surface of the annular disc in a final part thereof fitted and forming curved channels together with the sheet overlapping them. The device has several nodes, including vertical annular partitions with disks mounted at an angle to the horizontal and tangentially located vertical blades on them.The device has a minimum overall dimensions, reduced energy intensity and metal and material consumption, provides high efficiency of gas purification from impurities.

Description

A useful model of a scrubber for cleaning gas from harmful impurities (As, F compounds, sublimates of metals, dust, etc.) can be used in sulfuric acid production, in which waste sulfur dioxide gases from non-ferrous metallurgy enterprises are disposed of.

Sulfuric acid production is known in which a traditional type of Venturi pipe is used to purify gas from harmful impurities (for example, a sulfuric acid workshop at the Electrozinc plant, Vladikavkaz). The traditional Venturi pipe has three main elements: a confuser, a neck and a diffuser.

The confuser serves to increase the gas velocity from the initial (10-12 m / s) to the required gas flow velocity in the neck (35-45 m / s), while due to the relatively low gas velocity over almost the entire length of the confuser, the latter has insignificant effect on overall venturi pipe performance. It should be noted that the opening angle of the confuser, as a rule, does not exceed 24-26 °, which determines its large dimensions.

The diffuser is designed to smoothly reduce the gas velocity to a minimum (6-8 m / s) in order to enlarge the liquid droplets and their subsequent precipitation from the gas stream. Obviously, the diffuser does not have any significance in solving the issue of increasing the efficiency of the venturi. The opening angle of the diffuser does not exceed 4-6 °, which leads to its significant size.

The most optimal conditions for the gas purification process from impurities are provided in the neck due to the maximum dispersion of the liquid by a high-speed gas flow and thereby creating a larger contact surface between the gas and the liquid, as well as a velocity gradient between them, which ultimately leads to high work efficiency Venturi pipes in general.

The closest in technical essence is an apparatus for washing and cooling exhaust sulfur dioxide gases, which has a patent of the Russian Federation for utility model No. 147796 of 16.10.2014.

The main disadvantage of the known apparatus is the insufficient efficiency of the venturi, caused by a decrease in the speed of passage of the gas to be cleaned as the diameter of the horizontally mounted annular disks, which is one of the nozzles forming the venturi, increases, and the other generatrix is the surface of the liquid in the apparatus. Indeed, an increase in the diameter of the annular disks leads to an increase in the area of the orifice of the neck of the venturi and causes a decrease in the gas velocity in the neck. The latter determines a significant decrease in the degree of dispersion of the liquid by the gas flow and a reduction in the contact surface between the gas and liquid phases, which, of course, reduces the overall performance of the vents of the venturi pipes.

The technical problem, the solution of which is claimed by the claimed utility model, is to increase the efficiency of the vents of the venturi when cleaning sulfur dioxide from harmful impurities.

The indicated result is achieved by the fact that the claimed apparatus includes a housing filled with liquid, a cover with a gas supply pipe with an irrigation nozzle and a gas outlet installed on it, several vertical conical ring-shaped baffles are coaxially placed in the casing of the apparatus, ring disks are attached to their lower part, having vertical tangentially arranged vanes on the lower surface and a sheet covering them, moreover, circular disks forming the neck of the venturi together with the top the liquid inside the apparatus is installed at an angle to the horizontal, which ensures a constant value of the area of the orifice of the venturi neck with an increase in the diameter of the annular disks and, thereby, the optimal gas velocity at which the maximum efficiency of the neck of the venturi is realized.

The utility model is illustrated by drawings, where:

- in FIG. 1 shows a frontal section of the apparatus;

- in FIG. 2 shows a top view of the apparatus.

The apparatus includes a housing 1 and a cover 2, in the center of which there is an inlet pipe 3 with an irrigation nozzle 4 connected to a vertical annular conical partition 5, to the lower part of which an annular disk 6 is attached at an angle to the horizontal. On the lower surface of the annular disk 6 in the end its parts are installed tangentially vertical blades 7, extending to the upper surface of the annular disk 6 and forming curved channels together with the sheet 8, overlapping them. The apparatus has several nodes, including partitions 5 with disks 6 and blades 7. Above the cover is an outlet pipe 9 for removing purified gas, and the bottom pipe 10 on the housing 1 is used to drain the washing liquid.

The inventive apparatus operates as follows.

The source of sulfur dioxide, having a temperature of 250-320 ° C and containing impurities in the form of dust, SO 2 , SO 3 , compounds As, F, sublimates of metals, enters the inlet pipe 3 at a speed of 12 m / s, which is fed directly with gas with a temperature of 65-67 ° C, weakly concentrated sulfuric acid. Upon contact of the source gas with irrigating acid, the 1st stage of washing and cooling the gas in the evaporative mode with the formation of sulfuric acid mist occurs.

The capture of dust particles and other harmful impurities from the source of sulfur dioxide is based on the dissolution of impurities in sulfuric acid fog. At the exit from the volume bounded by a vertical annular conical partition 5, the principle of inertial droplet separation is realized due to a sharp change in the direction of gas flow in contact with the surface of the liquid located in the apparatus 1, while the droplets with trapped particles of dust and other impurities, tending by inertia maintain the previous direction of movement, are planted on the surface of the liquid. Along with this, the gas leaving the volume bounded by the vertical annular conical partition 5 at a speed of 25-30 m / s when in contact with the surface of the liquid in the apparatus body causes a significant formation of sprays that are dispersed by the flow of gas directed radially for further cleaning from impurities in the neck of the venturi, formed by an annular disk 6 mounted at an angle to the horizontal, and the surface of the liquid in the apparatus. At the same time, in the neck of the Venturi pipe, the most optimal conditions are created for the process of gas purification from impurities by ensuring a constant gas flow rate and, as a result, maximum dispersion of the liquid by a high-speed gas flow (gas velocity in the neck is 35-45 m / s) and thereby a large contact surface between the gas and the liquid, as well as a velocity gradient between them, which leads to the high efficiency of the apparatus as a whole for cleaning gas from impurities. With an increase in the content of harmful impurities in the gas, it is possible to change the neck cross section due to an increase in the liquid level in the housing 1, which leads to an intensification of the passing heat and mass transfer processes. At the outlet of the throat, gas is directed into channels formed by tangentially mounted relative to the radial direction of gas movement and vertical blades 7 partially immersed in the liquid and sheet 8 overlapping them. In the channels, liquid splashes are released from the gas flow due to the action of centrifugal force, which ends on the outer surface of the annular disks 6. The air-gas stream purified from the sprays is sent to the next stage of purification from impurities due to the inflow limited by the vertical annular conical partition 5 to the lower of the part of which an annular disk 6 is mounted, mounted at an angle to the horizontal, with blades 7 and sheet 8 covering them. At this stage, the gas is cleaned of impurities through nozzles the washing acid cooled in refrigerators with a temperature of 37-40 ° C is supplied for irrigation, which ensures the operation of this stage in the condensation mode and, thereby, further cooling and purification of gas from impurities, after which the gas leaves the apparatus through the pipe 9.

Claims (1)

  1. A device for washing and cooling sulphurous gases, including a housing filled with liquid, a cover with a gas supply nozzle with an irrigation nozzle and a gas outlet mounted on it, several vertical conical ring-shaped baffles, coaxially mounted to the lower part of the ring, are mounted in the casing, having vertical tangentially arranged vanes on the lower surface and a sheet covering them, characterized in that the annular disks forming the necks of the venturi together with the surface of the liquid located in the apparatus is mounted at an angle to the horizontal.
RU2016138875U 2016-10-03 2016-10-03 Device for rinsing and cooling of outlet sulfur gases RU168908U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2016138875U RU168908U1 (en) 2016-10-03 2016-10-03 Device for rinsing and cooling of outlet sulfur gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2016138875U RU168908U1 (en) 2016-10-03 2016-10-03 Device for rinsing and cooling of outlet sulfur gases

Publications (1)

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RU168908U1 true RU168908U1 (en) 2017-02-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5645802A (en) * 1989-05-02 1997-07-08 Chiyoda Corporation Method and apparatus for the treatment of a waste gas containing dists and chemical contaminants
RU2116119C1 (en) * 1997-06-25 1998-07-27 Тучков Владимир Кириллович Gas treatment apparatus
RU97933U1 (en) * 2010-04-26 2010-09-27 Открытое акционерное общество "Научно-исследовательский и проектный институт обогащения и механической обработки полезных ископаемых" (ОАО "Уралмеханобр" Device for rinsing and cooling of outlet sulfur gases
RU147796U1 (en) * 2014-01-14 2014-11-20 Кирилл Сергеевич Паникаровских SULFUR GAS RINSING AND COOLING UNIT
RU158507U1 (en) * 2015-09-29 2016-01-10 Кирилл Сергеевич Паникаровских Device for drying sulfur gas or absorption of sulfur anhydride

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5645802A (en) * 1989-05-02 1997-07-08 Chiyoda Corporation Method and apparatus for the treatment of a waste gas containing dists and chemical contaminants
RU2116119C1 (en) * 1997-06-25 1998-07-27 Тучков Владимир Кириллович Gas treatment apparatus
RU97933U1 (en) * 2010-04-26 2010-09-27 Открытое акционерное общество "Научно-исследовательский и проектный институт обогащения и механической обработки полезных ископаемых" (ОАО "Уралмеханобр" Device for rinsing and cooling of outlet sulfur gases
RU147796U1 (en) * 2014-01-14 2014-11-20 Кирилл Сергеевич Паникаровских SULFUR GAS RINSING AND COOLING UNIT
RU158507U1 (en) * 2015-09-29 2016-01-10 Кирилл Сергеевич Паникаровских Device for drying sulfur gas or absorption of sulfur anhydride

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