Dust-collecting system

FIELD: motors and pumps.

SUBSTANCE: dust-collecting system includes the source of cleaned gas, pipelines, fan, two dust-collecting units installed at counter-current swirling flows of gas. Each dust-collecting unit is represented with the cylindrical body with the tapered hopper, the first tangential inlet nozzle, inlet swirler in the second inlet nozzle and dust extracting beveled washer installed on its outer surface. The body is also provided with axial outlet nozzle for the cleaned gas and dust discharge nozzle where flood-gate is installed. The system is also provided with the source of clean air, the chokes installed on the pipelines and separating concentrator including cylindrical swirling chamber linked with inlet chamber provided with tangential inlet. There is axial pipe in the swirling chamber to discharge gas flow with less dust concentration. The swirling chamber outlet is located at the opposite side from inlet chamber. Side nozzle is mounted on the surface of swirling chamber to discharge gas flow with higher dust concentration. Tapered hopper of the fist dust-collecting unit is provided with dust-laden gas outlet nozzle. Cleaned gas source is connected to the tangential inlet of separating concentrator having side nozzle connected to the tangential inlet nozzle of the first dust-collecting unit. The axial outlet nozzle of the first dust-collecting unit is linked with the suction nozzle of the fan. Clean air source is coupled with the pipeline provided with choke and with inlet swirler of the first dust-collecting unit. Besides, axial pipe of the separating concentrator is coupled with the pipeline provided with choke and with the pipeline connecting clean gas source with inlet swirler of the first dust-collecting unit. The dust-laden gas nozzle of the first dust-collecting unit is linked with the tangential inlet nozzle and inlet swirler of the second dust-collecting unit. The axial outlet nozzle of the second dust-collecting unit is provided with the suction nozzle of the fan.

EFFECT: effective cleaning if dust-laden gas flow containing highly-disperse particles.

3 dwg, 1 ex

 

The invention relates to systems for the purification of gas and can be used in various industries - chemical, food processing, woodworking, building materials, require purification of exhaust gases from fine dust particles.

Known dust collection system containing source gas to be purified, a fan and two dust collector on the counter-swirling gas flows, each of which is made in the form of a cylindrical body with a conical hopper with a tangential inlet pipe, inlet swirl second input connection with paleotology conical washer on its outer surface with an axial outlet pipe and with perevypustim pipe, which has a rotary shutter. With this are connected to the output of a source gas to be purified, a tangential inlet pipe, a cylindrical housing, an axial inlet pipe of the first dust collector, fan, tangential inlet pipe, a cylindrical housing and an axial outlet of the second dust collector. The fan is connected directly to the input swirl second paleolatitudes, perevypusku pipe which is connected directly to the input of the first swirl paleolatitudes (see the description of the patent RU №2137528, 1999). This system is nibblebit.com similar to the proposed technical solutions.

A disadvantage of the known system is that it is not possible to achieve a high degree of purification of gas containing fine particles.

The task of the claimed invention is to provide opportunities for effective cleaning of dust and gas stream containing finely dispersed particles.

The invention consists in that the dust collection system includes a source of gas to be purified, piping, fan and two dust collector on the counter swirling gas flows, each of which is made in the form of a cylindrical body with a conical hopper, the first tangential inlet pipe, inlet swirl second input connection and paleotology conical washer on its outer surface with an axial outlet pipe cleaned gas and perevypustim pipe, which has a rotary shutter. The dust collection system differs from the closest analogue that is supplied by a source of clean air, are installed on pipelines, valves and separator-concentrator, comprising a cylindrical vortex chamber provided with an inlet chamber having a tangential input, while in the vortex chamber installed axial pipe for output gas stream with a lower concentration of dust, the output of which is placed opposite to the entrance chamber side Vikhrev the second camera, on the surface of the vortex chamber is side socket for output gas stream with a higher concentration of dust, and the conical hopper of the first dust collector is equipped with a nozzle exit dust-Laden gas, the source gas to be purified is connected to the tangential input of the splitter hub side outlet of which is connected to the tangential inlet side of the first dust collector, the axial outlet of which is connected to the suction inlet of the fan, and the source of clean air is connected by a pipe equipped with a valve, with the inlet swirler first dust collector, while the axial pipe of the separator-concentrator connected by a pipe equipped with a valve, a pipe connecting the source of clean gas from the inlet swirl the first dust collector, the outlet nozzle of dust-Laden gas which is connected to the tangential inlet nozzle and the inlet to the swirl of the second dust collector, axial outlet which is in communication with the suction inlet of the fan.

The invention is illustrated in the drawing, in which figure 1 shows a diagram of the proposed system dust collection, figure 2 is a front view in section of the separator-concentrator depicted in figure 1, and figure 3 is its top view.

The dust collection system includes a source of gas to be purified 1, fan 2, and two dust collector 3 and 4 on the counter swirling gas flows, each of which is made in the form of a cylindrical body 5 with a conical hopper 6, the tangential inlet pipe 7, the inlet swirler 8 from the second inlet pipe 9, provided with paleotology conical washer 10 with an axial outlet pipe purified gas 11 and perevypustim pipe 12, which has a rotary shutter 13. The system contains six dampers 14 - 19, a source of clean air 20 and the separator-concentrator 21, comprising a cylindrical vortex chamber 23 connected to the inlet chamber 22, having a tangential entry, side socket 24 and the axial pipe 25 o separated flows. This conical hopper of the first dust collector 3 is equipped with an outlet nozzle dusty gas 26.

The dust collection system works as follows.

As can be seen in figure 1, the flow of dust-Laden gas from the source 1 passes through a tangential entry in the input chamber 22 of the separator-concentrator 21, whence it is fed into the cylindrical vortex chamber 23, where it is split (see figure 2, 3). In the vortex chamber 23 is set to the axial pipe 25 to the output of the gas stream with a lower concentration of dust, the output of which is placed opposite to the inlet chamber side of the vortex chamber, on the surface of the vortex chamber is located a lateral pipe 24 to output gas stream with a higher concentration of dust.

Stream gases greater concentration of dust from the side of the socket 24 of the separator-concentrator 21 is supplied through the open valve 14 at a tangential inlet pipe 7 of the first dust collector 3, and the thread with the lower concentration of dust from the axial pipe 25 through the open valve 16 is supplied to the inlet swirler 8, placed in the inlet pipe 9 of the dust collector. At the input 8 of the first swirl of dust collector 3 is also fed fresh air from source 20 through the open valve 15. Thread cleaned the dust collector 3 gas from the axis of the outlet pipe 11 is supplied to the pump suction fan 2 and is discharged into the atmosphere. From the hopper 6 in the first dust collector 3 is sucking dust-Laden gas through the pipe 26, through the open valve 17 is supplied to the tangential inlet pipe of the second dust collector 4 and through the open valve 18 to the inlet swirl 8 dust collector, and the flow of purified gas from the axis of the outlet pipe 11 and open valve 19 is supplied to the pump suction fan 2 and is discharged into the atmosphere. Formed in the collector 3 and 4, the dust discharged through the sluice gates 13 installed on perevypusku nozzles 12.

In the proposed system of the dust flaps 14 and 16 of the regulation submission to the dust collector 3 two streams of gas from the separator-concentrator 21. Valve 15 regulates the flow of clean air into the dust collector 3, and the flaps 17, 18 and 19 is specified exhaust gas from the hopper 6 dust collector 3.

predlojennaya the dusty gas cleaning system allows the hub-splitter to get two gas flow with different concentration of dust particles, when this occurs the escalation of fine particles, and these flows into the first cyclone separator 3 so that through a tangential inlet pipe 7 enters the gas stream with a higher concentration of dust and moving along a helical line down, and the gas stream with a lower concentration of dust connected with the flow of fresh air through the inlet swirl 8, placed in the pipe 9 enters the cylindrical body 5 of the dust collector 3 and moves upward along a helical line with a smaller radius of twist than received through a tangential nozzle 7 stream, i.e., the movement occurs near the axis of the collector 3. When the direction of rotation of the two threads is the same. Under the action of centrifugal force and when the positive effect of this upward flow is efficient separation of the introduced through the inlet swirl flow of dust particles, shadows thrown on the wall of the casing 5 of the dust collector 3, which further under the action of gravity fall into the hopper for dust collection. This increases the percentage of trapping fine particles.

Organization of the exhaust gas from the upper part of the hopper 6 dust collector 3 increases the vacuum within the cylindrical chamber 5 dust collector 3, which intensifies the process of dropping the dust particles to the walls of the cylindrical chamber 5 and increases the MSE of the ity of their deposition into the hopper 6. This sucked from the hopper 6 dust collector 3 dust-gas-air flow passes efficient cleaning of the dust collector 4.

Example.

The proposed dust collection system was used to capture coke dust with an initial concentration on the login 7-14 g/m3while the content of the coke particles of dust with a size of 15 μm at the inlet of the dust collection system has reached 40%. The output of the system, the concentration of dust particles was 0.3-0.5 g/m3and the content of particles with a size of 15 microns was less than 17%, and the capture of particles with size up to 5 μm to 10%.

Thus, the proposed system provides high efficiency dust removal from contaminated gas, including fine particles.

The dust collection system containing source gas to be purified, piping, fan and two dust collector on the counter swirling gas flows, each of which is made in the form of a cylindrical body with a conical hopper, the first tangential inlet pipe, inlet swirl second input connection and paleotology conical washer on its outer surface with an axial outlet pipe cleaned gas and perevypustim pipe, which has a rotary shutter, characterized in that it is equipped with a source of clean air, have been fitted the mi line dampers and splitter hub, comprising a cylindrical vortex chamber provided with an inlet chamber having a tangential input, while in the vortex chamber installed axial pipe for output gas stream with a lower concentration of dust, the output of which is placed opposite to the inlet chamber side of the vortex chamber, on the surface of the vortex chamber is side socket for output gas stream with a higher concentration of dust, and the conical hopper of the first dust collector is equipped with a nozzle exit dust-Laden gas, the source gas to be purified is connected to the tangential input of the splitter hub side outlet of which is connected to the tangential inlet side of the first dust collector, the axial outlet of which is connected to the suction inlet of the fan, and the source of clean air is connected by a pipe equipped with a valve, with the inlet swirler first dust collector, while the axial pipe of the separator-concentrator connected by a pipe equipped with a valve, a pipe connecting the source of clean gas from the inlet swirler first dust collector, the outlet nozzle of dust-Laden gas which is connected to the tangential inlet nozzle and the inlet to the swirl of the second dust collector, axial outlet which is in communication with the suction inlet of the fan.



 

Same patents:

FIELD: mechanics.

SUBSTANCE: proposed system incorporates pipelines, first and second vortex dust separators, each incorporating a cylindrical casing with an upper tangential inlet branch pipe, a swirler communicating with the lower inlet branch pipe furnished with a tapered dust baffle washer arranged along the casing axis, an axial outlet branch pipe and a taper dust collector bin with a dust release branch pipe furnished with a rotary lock and a fan with its intake branch pipe communicating with the first dust separator axial outlet branch pipe and its pressure branch pipe communicating with the second dust separator inlet branch pipes. The proposed system is additionally furnished with the third vortex dust separator that features a similar design but smaller overall sizes and lower efficiency compared to the aforesaid first and second dust separators. Note that the aforesaid third dust separator inlet branch pipes communicate with the second separator bin and its axial outlet branch pipe is connected to the sleeve filter, its outlet being connected to the first dust separator lower inlet branch pipe. Note here that the starting gas feed pipeline communicates with the first dust separator upper and lower inlet branch pipes.

EFFECT: higher efficiency of purifying gas with finely-dispersed particles.

1 dwg

FIELD: process flows, filters.

SUBSTANCE: invention is related to the dust control equipment. The filter includes case with coarse and fine filters. The coarse filter is made as cyclone element located in the bottom part of the filter and the fine filter as filtering section including bag filtering elements. The cover is provided with platform with axially mounted electric motor and fan. The filtered air is discharged through discharge fitting made in the form of diffuser that envelopes the platform and hopper is located in the bottom part of the filter. The fine filter is periodically cleaned from dust by manual vibration and shaking mechanism actuated by handle. The case of filtering section is provided with temperature gauge, the dust collection hopper - with emergency dust level gauge, the discharge fitting of filtering section - thermal automatic detector with outputs connected to common microprocessor; at that the discharge fitting is provided with manifold with nozzles for connection to the fire extinguishing system with control unit connected to common microprocessor, vibration and shaking mechanism is provided with control unit electronically linked to common microprocessor.

EFFECT: improved efficiency and reliability of dust control process, reduced metal consumption and general vibroacoustic activity of the device.

3 cl, 3 dwg

Cyclone-filter // 2338601

FIELD: dust collecting technology.

SUBSTANCE: cyclone contains case, periphery inlet of gas flow, made in form of inlet branch pipe, screw-shaped cover, bunker and outlet branch pipe for removal of purified gas. On the end of outlet branch pipe filtering element is fixed. Filtering element represents filter-chuck, made in form of cylindrical rod framework with upper and lower flanges, on which by means of belts, placed in plane perpendicular to framework axis, filtering material is fixed. On upper filter-chuck flange system of filter-chuck regeneration is placed. Bunker for dust collection is made of conical or pyramidal form with angle of wall inclination exceeding angle of natural slope of collected dust, and is connected with sluice feeder or mobile reservoir for dust collection. Filtering element of filter-chuck is made in form of intact or corrugated cylindrical casing.

EFFECT: increase of efficiency and reliability of dust collection process.

4 cl, 4 dwg

Cyclone // 2338600

FIELD: technology of dust collecting.

SUBSTANCE: cyclone contains case, composed of cylindrical and conic parts, peripheral inlet of gas flow, made in form of inlet branch pipe and exhaust pipe for removal of purified gas, upper and lower cases with located in them internal barrel. In the exhaust pipe dissector connected with filtering element is placed. Filtering element is a filter-chuck, fixed by lower flange on diffuser, connected with exhaust pipe, and made in form of cylindrical rod framework with upper and lower flanges, on which by means of straps, placed in plane perpendicular to axis of framework, filtering material is fixed. On upper flange of filter-chuck regeneration system is placed. Bunker for dust collecting is made of conic or pyramidal form with angle of walls inclination, exceeding natural slope of collected dust, and connected with sluice feeder or mobile reservoir for dust collecting. Filtering element is made in form of corrugated conical casing.

EFFECT: increase of efficiency and reliability of dust collecting process.

3 cl, 5 dwg

FIELD: technology of dust collecting.

SUBSTANCE: cyclone contains case, composed of cylindrical and conical parts, spiral inlet of gas flow, made in form of inlet branch pipe, dust-outlet hole and exhaust pipe, on the end of which filtering element, whose hydraulic resistance constitutes not more than 50% of hydraulic resistance of the whole apparatus, is fixed. Filtering element represents filter-chuck, made in form of cylindrical rod framework with upper and lower flanges, on which by means of belts, placed in plane, perpendicular to axis of framework, filtering element is fixed. On the upper blind flange of filter-chuck regeneration system of filter-chuck is placed. Bunker for dust collecting is made of conical or pyramidal form with angle of walls inclination, exceeding angle of natural slope of collected dust, and is connected with sluice feeder or mobile reservoir for dust collecting. Filtering element is made in form of corrugated conical covering.

EFFECT: increase of efficiency and reliability of dust collecting process.

4 cl, 5 dwg

FIELD: motors and pumps.

SUBSTANCE: dust extractor includes cylindrical case, axial inlet of dusty gas with vortex and ejection head which forms annular gap with inlet wall, fairing and conical deflector washer, and axial branch for treated gas outlet and peripheral secondary flow inlet with vortex located in the upper tank part. End of axial discharge branch carries filtering element is a filter cartridge in the form of cylindrical rod frame with top and bottom flanges, carrying filtering element fixed by straps perpendicular to the frame axis. Recovery system of filter cartridge is mounted on its top flange. Dust collecting tank has conical or pyramidal shape with wall tilt angle exceeding natural repose angle of extracted dust and is connected to gate feeder or mobile vessel for dust collection. Filtering element of filter cartridge has form of crimped cylindrical shell.

EFFECT: improved efficiency of dust extraction process.

2 cl, 4 dwg

FIELD: motors and pumps.

SUBSTANCE: dust extractor includes cylindrical case with conical tank and axial input branch in the lower tank part and secondary flow feed branch and discharge branch in the upper part, discharge branch featuring filtering element attached to its end. Filtering element is a filter cartridge in the form of cylindrical rod frame with top and bottom flanges, carrying filtering element fixed by straps perpendicular to the frame axis. Recovery system of filter cartridge is mounted on its top flange. Dust collecting tank has conical or pyramidal shape with wall tilt angle exceeding natural repose angle of extracted dust and is connected to gate feeder or mobile vessel for dust collection. Filtering element of filter cartridge has form of crimped cylindrical shell.

EFFECT: improved efficiency of dust extraction process.

2 cl, 4 dwg

FIELD: motors and pumps.

SUBSTANCE: cyclone includes case consisting of cylindrical part and reverse cone, spiral input of gas flow in the form of inlet branch, internal cone forming annular gap with reverse cone, tank with gate, and exhaust pipe for treated gas outlet. End of exhaust pipe carries filtering element, which is a filter cartridge in the form of cylindrical rod frame with top and bottom flanges, carrying filtering element fixed by straps perpendicular to the frame axis. Recovery system of filter cartridge is mounted on its top flange. Dust collecting tank in made in the form of cylinder with tilted bottom, tilt angle exceeding natural repose angle of extracted dust, and is connected to gate feeder or mobile vessel for dust collection. Filtering element of filter cartridge has a form of crimped cylindrical shell.

EFFECT: improved efficiency and reliability of dust extraction process.

3 cl, 6 dwg

FIELD: motors and pumps.

SUBSTANCE: dust extraction device includes case, peripheral gas flow inlet, filtering element and dust collection tank. Peripheral gas flow inlet is positioned in central device part and made in the form of inlet branch connected at right angle to cyclone element case with two coaxial branches. One coaxial branch carries filtering element in the form of filter bag, another branch carries dust collection tank in the form of dust collection bag. Filtering element is made in the form of filter cassette of crimp-type folded filtering paper, positioned in wire frame. Filter cassette includes recovery unit in the form of at least two plates fixed rigidly on a shaft coaxial to filter and driven by a drive mounted in upper part of wire filter frame and consisting of electric motor and redactor. Plates enter crimp grooves not deeper than at 25% of crimp height.

EFFECT: enhanced efficiency and reliability of dust extraction process, reduced metal consumption and vibroacoustic activity of whole device.

6 cl, 6 dwg

FIELD: motors and pumps.

SUBSTANCE: dust extraction device includes case, peripheral gas flow inlet, filtering element and dust collection tank, with peripheral gas flow inlet positioned in central device part and made in the form of inlet branch connected at right angle to cyclone element case with two coaxial branches. One coaxial branch carries filtering element in the form of filter bag, another branch carries dust collection tank in the form of dust collection bag. Cyclone element is made in the form of scroll-type case carrying ventilator with its axis parallel to axis of branches carrying filtering element and dust collection tank, and inlet branch is fixed coaxial to ventilator axis. The branch with dust collection tank holds an insert cylindroconical cartridge, conical part of which is a confuser or diffuser.

EFFECT: enhanced efficiency and reliability of dust extraction process, reduced metal consumption and vibroacoustic activity of whole device.

6 cl, 4 dwg

Vortex apparatus // 2341335

FIELD: mechanics.

SUBSTANCE: vortex apparatus comprises casing wit upper and lower covers, the lower one making a condensate collector, gas inlet/outlet and condensate outlet branch pipes, partitions, vortex pipe, initial compressed gas flow rate control device and condensate-separation units. Aforesaid vortex pipe includes a cold flow and hot flow pipes. Initial compressed gas flow rate control device incorporates a screw-type tightening device (STD) with adjusting washer furnished with a cross-piece with stem arranged in the STD membrane hole. The said stem passes via the cold flow pipe and through the gland in the upper cover out from the apparatus and is furnished with the rotation drive. The condensate-separation units comprise pipe laid between the said partitions, two pairs of crosswise slots arranged opposite to each other on the hot flow pipe at the distance of (1.25 to 1.45) d, where d is the pipe ID, from the STD edge and shifted relative to each other by 90°. Note that the said slots are arranged along the axis at the distance of (0.15 to 0.25) d. The circular chamber outlet channels, inside the hot flow pipe, are terminates at the gap between the casing wall and thin-wall cylinder. The hot flow pipe outlet is furnished with a nozzle and thin-wall cylinder is provided with confuser-diffuser element making an injector.

EFFECT: control over initial compressed gas flow rate by external effects and higher efficiency of condensation-separation processes.

1 cl, 4 dwg

Dust separator // 2325953

FIELD: mechanics filtration.

SUBSTANCE: invention is designed to separate suspended particles from gases. The dust separator incorporates a countercurrent flow concentrator connected to the vortex chamber outlet axial branch pipe, the concentrator allowing an axial purified gas out coming and a removal of concentrated dust. The vortex chamber is provided with a slot and gas duct with a gate arranged on the chamber curvilinear wall on the flow inlet side, the gas duct communicating with the duct removing the concentrated dust from the countercurrent flow concentrator into the extension countercurrent flow cyclone. The vortex chamber opposite side has a slot and gas duct communicating with the extension countercurrent flow cyclone. The extension countercurrent flow cyclones are equipped with the transit-receiving vessels connected to the gates incorporating the gates with vertical dust standpipes, while the receiving vessel is provided with a dust duct with gate. The proposed invention increases the efficiency of operation.

EFFECT: increase in dust separator efficiency.

2 cl, 2 dwg, 3 tbl, 5 ex

FIELD: production of ameliorant based on natural bischofite, phosphorites, metallurgical production wastes in the form of slag, used etching solutions employed in etching of ferrous metals with sulfuric acid, and used electrolytes utilized in galvanic plating.

SUBSTANCE: method involves processing solid components followed by mixing with liquid components; preliminarily preparing solution from used etching solutions of sulfuric acid etching of ferrous metals and electrolytes of galvanic plating in the ratio of 1:1; separately feeding solution for treating of ground metallurgical slag at solid and liquid phase ratio S:L=1:6 and for processing of ground phosphorites at S:L ratio of 1:7; in the first case, heating mixture to temperature of 120-160 C during 0.75-1.25 hours, in the second case heating mixture to temperature of 95-120 C during 30-45 min while continuously mixing until homogeneous mass is produced; preparing third mixture of ground phosphorites and mixing it with brine of natural mineral of bischofite of MgCl2·6H2O formulation at S:L ratio of 1:4, said mixing process being conducted at temperature of 80-90 C during 1-2 hours; mixing resulted pulp of bischofite and phosphorites with homogeneous mass of slag of metallurgical production with etching solutions and phosphorites with etching solutions in the ratio of 1:1:1 during 1 hour at temperature of 45-70 C until pasty mass is produced. Also, apparatus for producing of ameliorant is described.

EFFECT: improved quality of ameliorant, reduced consumption of power and decreased production costs in obtaining of ameliorant.

3 cl, 1 dwg, 16 tbl

FIELD: separation of heterogeneous dispersed systems; devices for centrifugal separation of liquids from mechanical admixtures in hydraulic cyclone clearances; metallurgy and metalworking industry.

SUBSTANCE: proposed hydraulic cyclone plant includes reservoirs for initial waste liquid, sludge product and clean liquid, hydraulic cyclone with inlet, drain and sludge branch pipes, pump for delivery of initial liquid to hydraulic cyclone, injector and multi-hydrocyclone with inlet, drain and sludge branch pipes mounted between hydraulic cyclone and clean liquid reservoir provided inlet and outlet branch pipes; reservoir for sludge product provided with compressed air and flushing liquid branch pipes is located under sludge branch pipes of hydraulic cyclone and multihydrocyclone; injector fitted in initial liquid supply pipe line is provided with branch pipe for introduction of carbon dioxide from bottle. Proposed plant ensures through cleaning of waste liquid from solid particles of admixtures having diameter of 10 mcm up to 76-90%. Process of carbonization of liquid in shifting the admixtures from water-soluble state to solid phase reduces their concentration by 125 times. Repeated return of cleaned liquid to production saves chemical reagents by two times.

EFFECT: enhanced efficiency.

1 dwg

Hydrocyclone // 2230614

The invention relates to the field of engineering, namely the dry dust collecting devices that can be used to capture fine and coarse bulk materials in the food industry and in the production of building materials, metallurgy and other industries requiring clean air or gas

Spray // 2187383
The invention relates to a technique of sputtering current substances, liquid, semi-liquid, bulk and can find application in various industrial processes, for example for cooling and lubricating the cutting sprayed liquids for spraying and painting of surfaces, as well as in medicine and agriculture

The deduster // 2149705
The invention relates to devices for cleaning of gases from solids, can be applied in metallurgy, construction and other industries

Elektronikon // 2142853

FIELD: motors and pumps.

SUBSTANCE: three-stage dust-collecting system includes dust-laden gas source connected with the distribution header, three dust-collecting plants and fan. The dust-collecting plants are represented with dust-collecting units installed at counter-current swirling flows of gas. Each dust-collecting unit includes cylindrical body with the tapered hopper, the upper tangential inlet nozzle, the lower inlet nozzle with inlet swirler and dust extracting beveled washer. This washer is installed along body axis and at the outer surface of the lower inlet nozzle. The dust-collecting system also includes axial outlet nozzle for the cleaned gas and axial dust discharge nozzle. The latter is installed in the bottom part of the hopper and provided with flood-gate. There is a flood gate installed in the bottom part of the dust collecting unit. Outlet nozzles of the dust-collecting unit are provided with chokes and connected with the upper inlet nozzles of the second and third dust connecting units and with the lower inlet nozzles of the second and third dust connecting units. The lower inlet nozzle of the first dust-collecting unit is linked with its upper inlet nozzle. The axial outlet cleaned gas nozzle is coupled with the lower inlet nozzle of the second dust-collecting unit, whereas the axial outlet cleaned gas nozzle of the second dust-collecting unit is linked with the lower inlet nozzle of the third dust-collecting unit. Suction nozzle of the fan is connected to the axial outlet cleaned gas nozzle of the third dust-collecting unit. Preferably, ratio of the first, second and third dust-collecting units diameters should be 1:(1.2-1.5):(2-3), respectively.

EFFECT: increased effectiveness of dust-collecting process and possibility of system three-mode operation depending on highly-disperse dust particles amounts in initial gas and required degree of cleaning.

2 cl, 1 dwg, 1 ex

Up!