Kochetov's acoustic dust separator

FIELD: process engineering.

SUBSTANCE: invention relates to dust separation and can be used in chemical, food light industries etc. for purification of dusty gases. Proposed separator comprises cyclone making first dust separation stage, acoustic system and sleeve filter making second dust separation stage. Said cyclone comprises housing, bin communicated by bypass branch pipe with acoustic column case, exhaust pipe with louver-type dust separator fitted at its bottom. Exhaust pipe is communicated air pipe with acoustic column. Said sleeve filter is communicated with acoustic column outlet via air line and flange intended for feeding purified gas into sleeve filter filtration chamber. Filter incorporates temperature pickup arranged in filtration chamber case and emergency dust level pickup arranged in dust collection bin. Filtration chamber outlet box accommodates automatic thermal indicator pickup and manifold with nozzles to be connected to firefighting system. Filter regeneration system comprises valve units incorporating electromagnetic valves, pulse valves with pulse pipes and branch pipes, Venturi nozzles, differential pressure gauge and a set of valves and accessories for feeding compressed air to said valve unit.

EFFECT: higher efficiency of dust separation.

4 dwg

 

The invention relates to techniques for dust collection and can be applied in chemical, textile, food, textile and other industries for cleaning dust-Laden gases.

The closest technical solution to the declared object is to install a dust collection, containing the cyclone, comprising a housing consisting of a cylindrical and conical parts, located in the upper portion of the peripheral input gas flow and the axial outlet of purified gas, the acoustic column located in the upper part of the generator of acoustic waves (RF patent No. 2302283) prototype.

The disadvantage of the prototype is the relatively low efficiency of the first stage dust collection.

The technical result - improving the efficiency of dust collection.

This is achieved by installing acoustic dust containing the cyclone as the first stage of purification of the gas mixture, sound system and bag filter, which is the second stage of dust collection system, the cyclone includes a housing, a hopper, which is connected in the bypass exhaust housing speakers, while the cyclone contains the exhaust pipe placed in the bottom of the louvered cyclone separator, which is connected by a duct with acoustic column located in the upper part of g is neration sound vibrations, and in the lower bumper conical washer, and speaker and bag filter are interconnected by a duct, and a bag filter connected to the output of the speakers through the duct flange for inlet gas to be purified in the filter chamber filter bag.

1 shows a General view of the dust acoustic installation figure 2 - General view of the filter bag, 3 - core projection figure 2, figure 4 - diagram of pulse regeneration system filter.

Acoustic dust installation includes the following main subsystems: the cyclone (figure 1), coupled with the acoustic system of coagulation of dust, the output of which is connected with a bag filter (Fig.2-3), the pulse regeneration system, bag filter (figure 4), the system for ensuring explosion and fire safety filter (not shown).

The cyclone includes a housing 1, a hopper 2, which is connected in the bypass exhaust 6 case 4 speakers. Cyclone contains the exhaust pipe placed in the bottom of the louvered cyclone separator 3. The exhaust pipe of the cyclone is connected to the duct 34 with the acoustic column 4 located in the upper part of the generator of sound vibrations, and in the lower bumper conical washer 5. Speaker 4 and the bag filter are interconnected by a duct 33.

For installation the optimal dust collection shall comply with the following ratio:

- the ratio of the inner diameter D of the cylindrical part of the cyclone body 1 to the diameter d of the outlet pipe lies in the optimal ratio of D/d=1,5÷4,63;

- the ratio of the inner diameter D of the cylindrical part of the cyclone body 1 to the height of the cyclone H lies in the optimal ratio of D/H=0,13÷is 0.135;

- the ratio of the height of the cyclone N to the height of the cylindrical part H1cyclone lies in the optimal ratio of H/H1=2,67÷2,7;

- the ratio of the height of the cyclone H to the height of the conical part of the H2cyclone lies in the optimal ratio of H/H2=1,9÷2,0;

- the ratio of the inner diameter D of the cylindrical part of the cyclone body 1 to the length l of the outlet pipe lies in the optimal ratio of D/l=0,78÷0,8;

- the ratio of the diameter d of the outlet of the cyclone to the length l of the outlet pipe lies in the optimal ratio of d/l=0,49÷0,52;

- the ratio of the length l of the outlet pipe width B lies in the optimal ratio of l/B=1,46÷1,5;

Optimal settings for audio processing are: sound pressure level in the range of 130÷145 dB, frequency of sound vibrations in the range of 900 to 2,000 Hz, the time of sound in the range of 1.5=2.5 sec, the dust concentration in the gas stream is at least 2 g/m3.

Bag filter (Fig.2-3) connected to the output of loudspeakers 4 a duct 33 crestliner 15 and pipe 14 to the entrance of the purified gas in the filter chamber 7 filter bag, which is the second stage of dust collection system and having a view of the Cabinet with convenient recess through the side door 12 vertically arranged filter elements 24 in the form of filter bags. Remote control 16 regeneration of filter sleeves made outside of the camera 7. The flange 13 to exit the purified gas is in the chamber 22 purified gas above the filtering chamber 7, and has a cross section which is equal to the flange 15 for the entrance of gas to be purified in the filter (figure 3).

Camera 7 and 22 of the filter to form a housing together with underneath them simple conical hopper 17 piliigriiim device type "double flasher (not shown) or a conical hopper with a feed screw 18 with dust valve 19 with manual transmission with piliigriiim device, gateway rotary stopper 21, as well as local control panel 20 by a screw and gateway rotary shutter. On the container of any type is set to one level sensor dust (not shown).

The filter housing is equipped with a support rack, made in the form of at least three racks 8 are rigidly interconnected by horizontal rods 9, and the inclined ribs 10, one end of which is connected to the rack rods 8 and 9 and the other with the hopper 17 of the filter. On a rack rigidly mounted and fixed between itself and the filter housing ladder 23 and Ogre is Denia 11.

In this respect, the overall dimensions of the filter rack: height H and length L lies in the optimum range of values of H/L=1.0÷2,0;

the ratio of the height H of the filter to the height B of the rack lies in the optimum range of values of H/B=1,0÷2,0;

the ratio of the height M of the geometric center of the flange 13 to exit the purified gas to the height N of the geometric center of the flange 15 to the entrance of the purified gas in the filter chamber 7 lies in the optimum range of values of M/N=1,5÷2,0.

Filter sleeves (not shown) are arranged in easily removable cassette, 6 pieces in each cassette, upright (4 pieces for easy dust: cartridges - 2 units in the cassette for fine dust and the like). The filter bags have in cross section a rectangular shape (the total area of the filter Sf=1.4 m2). Bag filter - flat; have a rectangular cross-section - 340×32 mm, height 2, and 3 m In filters going into cassettes, mostly 6 or 4 pieces (weight cassettes, respectively, 18 and 14 kg). Replacement of filtracion and cartridges is only cassettes. The element of this form has the following advantages: high portability; high degree of regeneration is due to the fact that the flat sleeve less internal volume, which increases the injection.

As the material of the filter bag filter can be applied:non-woven polyester, reinforced internal frame mesh; woven aramid reinforced internal frame mesh: fine-fibered non-woven polyester reinforced internal frame net with a special coating; water-resistant non-woven polyester reinforced internal frame net with a special coating; non-woven, reinforced internal frame mesh polyester, antistatic with maslovlagootdelitel impregnated with a smooth surface; fine-fibered non-woven polyester reinforced internal frame net with a special coating. Filterrow for filter elements sewn from woven reinforced filtering material (polyester or Nomex) with special impregnation.

Cartridge filter elements have dimensions: diameter 327 mm height 1 m

Filter elements made of special filtrability and are more filtration area compared with cartridge, equipped with six arms. Fine-fibrous structure of the filter element allows to obtain very low rates of residual dust content is not more than 0.2 mg/m3.

Cartridge filter elements are used in case of high purity and small dimensions of the filter. In the filters going on 2 pieces in the cartridge (cartridge weight - 10.4 kg).

Filters can also be equipped with: taper, PLoS what they or special bunker, horizontal cyclone, allowing to reduce the inlet dust load, and to provide estragaste gas cooler gas, which reduces the temperature going into the filter gas valve suction of atmospheric air, as well as shut-off and regulating valves for installation in ducts: a transport container - dust box; pulvirenti devices; suction sleeve pulvirenti (not shown).

The scope of the proposed filter design the filter dry dust environments of small expenses from 1100 up to 30,000 m3per hour, when installing in confined spaces.

Work with high initial dust and low residual palestinianism (not to exceed 10 mg/m3in the standard version: when using cartridges with cartridge filter elements or the filtering material "fine-fibered non-woven polyester - up to 0.2 mg/m3; clean air can be discharged directly to the shop).

The versatility of filters: simple replacement of the cartridge filter elements on the cartridge of a different type allows you to use a filter to filter other types of dust (for example, to filter the first heavy and then light dust).

Pulse regeneration system of filtracion with nozzles "Venturi" and flat rectangular filtrative allows you to work effectively with sticky, kolkowski what I dust.

Bag filters can be shielded from exposure to the environment. In this case, the filters may be completed: to shed light on the regeneration system and ground maintenance, insulated cover housing filter bag, insulated floor of the bunker, shelter bin premises of the steel sheet or insulating sandwich panels (not shown).

Pulse regeneration system baghouse (figure 4) includes valve blocks 26, which are mounted solenoid valves 25, the input of which is connected to the output of controller 32, the pulse valve 27 with a pulse tubes and pipes, of the Venturi nozzle 23, a differential pressure gauge 31. connected via the pressure sensor 28 to the camera 22 to exit the purified gas through the pressure sensor 29 is connected by a line 30 to the control unit 32, to the filtering chamber 7 for the entrance of gas to be purified, and set the valve to supply compressed air to the valve blocks (not shown), and a differential pressure gauge 31 is connected with the control unit 32.

System for ensuring explosion and fire safety filter (not shown) contains a temperature sensor mounted in the filter housing, emergency level sensor dust, mounted in the hopper for dust collection. In the chamber 22 to exit the purified gas has a heat ABT the automatic sensor-sveadal, moreover, the inputs and outputs of the sensors are connected with the control unit 32, the camera 22 to exit the purified gas is installed manifold with nozzles for connection to the fire-extinguishing system control unit which is also connected with the control unit 32.

Install dust acoustic works as follows.

Dust-Laden gas stream is fed to the inlet of the cyclone. Here he is twisted due to the tangential peripheral input and screw cap (not shown), and then goes on a downward spiral line along the walls of the housing 1 of the cyclone. As a result, dust particles under the action of centrifugal force moving from the center of the cyclone 1 to the periphery and, reaching its walls, are transported down into the hopper 2 to collect the trapped dust. The cleaned air is discharged from the cyclone through the exhaust pipe with louvered cyclone separator 3. In the acoustic column 4, the parameters of sound vibrations which are configured from the control unit (not shown), is separated from the air of dust particles, as under the influence of the sound field and related oscillatory processes in the air, the dust particles are coagulated, and the large particles settle down the column, where the air flow enters the cyclone hopper 2 through the bypass outlet 6. In this light, IU todisperse fraction of dust particles, not captured in the previous phases of treatment, delayed by a baghouse, which is connected by a duct 33 with the acoustic column 4.

The reflecting plate (not shown)mounted coaxially to the cyclone body in the middle part, prevents the entrainment of the fine fraction of dust particles, thereby increasing the efficiency of dust collection.

Then dusty gas stream is directed through the flange 15 (2-3) for entry of the purified gas in the filter chamber 7 of the bag filter, which is the second stage of dust collection system, the inside of the filter elements 24 in the form of filtering bags, where the filter material is delayed for dust and cleaned air enters the chamber clean gas 22. The flange 13 serves for the exit of treated gas and is located in the chamber 22 of the purified gas, which is above the filtering chamber 7.

Pulse regeneration system baghouse (figure 4) is in the following order. When filtration of gases on the surface of the sleeve increases the layer of dust, which increases the hydraulic resistance of the filter, i.e. the pressure differential between the chamber 22 and the filtering chamber 7 (the pressure drop involved in the regeneration system as a control factor). The differential pressure gauge 31 is constantly measures the pressure drop; when reaching the set value (at the specified position on the dial) vides the signal to the controller 32, in accordance with my program runs a pulsed valve 26. When triggered, the pulse valve 27 compressed air from the manifold through the pulse tube from the nozzle is discharged into the Venturi nozzle 23 and, further, the inside of the sleeve 24 (or cartridges). The presence of pulse nozzles and Venturi nozzles increases the efficiency of influence of a pulse of compressed air and provides improved cleaning of the filter elements from the dust.

All filters are equipped with a system of compressed air (not shown) at the entrance to the regeneration system. The training system allows operation of the filter of a network of compressed air under almost all ambient temperatures. The regeneration system can be installed with minimal vozduhoduvkoy: input filter compressed air and moisture separator.

The regeneration system provides timely cleaned from dust and maintains the nominal permeability of the filter elements.

In case of insufficient efficiency of the regeneration system increases the hydraulic resistance of the filter and decreases the flow rate of the purified gas. At the same time, when excessive increase in the degree of cleaning of the sleeves in the filtering process from the settled dust there is increased leakage of dust through filterplate, since the outer side of the sleeve if the com "bare" - with it removed, the filter layer.

Therefore, the regeneration system contains elements that customize its performance under different operating conditions through a control of the controller 32.

System for ensuring explosion and fire safety works as follows.

Thermal sensor-detector and manifold with injectors fire extinguishing system is installed in the chamber 22 of the filter because it is an output link in the proposed device, and to prevent the spread of flames in case of fire further along the ventilation channels, these systems establish here that will increase the reliability and security of the entire device.

The work of the collector nozzle is based on the principle of opening emergency electromagnetic water supply valve: when applying to the valve control signal from the master controller 32 processes the signal from the heat sensor of the detector, which in turn responds to the temperature increase in the chamber 22 of the filter, until the ignition of dust aerosols and filtering media of the filter element.

Installing acoustic dust containing the cyclone as the first stage of purification of the gas mixture, sound system and bag filter, which is the second stage of dust collection system, atricauda is the, the cyclone includes a housing, a hopper, which is connected in the bypass exhaust housing speakers, while the cyclone contains the exhaust pipe placed in the bottom of the louvered cyclone separator, which is connected by a duct with acoustic column located in the upper part of the generator of sound vibrations, and in the lower bumper conical washer, and speaker and bag filter are interconnected by a duct, and a bag filter connected to the output of the speakers through the duct flange for inlet gas to be purified in the filter chamber filter bag, with a view of the Cabinet with convenient recess through the side door of vertically arranged filter elements the form of the filter sleeve and the flange for a clean gas outlet is located in the clean gas space above the filter chamber and has a cross section which is equal to the flange for inlet gas to be purified in the filter, which is further provided with a temperature sensor installed in the housing of the filter section and the hopper for dust collection set alarm level sensor dust in the output box of the filter section has automatic thermal sensor-detector, and the output duct of the filter section of the filter is installed manifold with nozzles for connection with the system of the fire, a control unit which is connected with the control unit, and the system filter regeneration includes manifolds, which are mounted solenoid valves, the inlet of which is connected to the output of the master controller; pulse valves with pulse tubes and nozzles, nozzle, Venturi; a differential pressure gauge connected via the pressure sensor to the camera to exit the purified gas through the pressure sensor to the filter chamber for entrance of gas to be purified, and set the valve to supply compressed air to the valve blocks, and a differential pressure gauge connected to the master controller.



 

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FIELD: natural gas industry; other industries; production of the dust-catching devices.

SUBSTANCE: the invention is pertaining to the dust catching equipment, in particular, to the dust catching installation. The dust catching installation consists of the cyclone and the fine screen connected to each other by the air duct in such a manner, that the outlet of the cyclone is connected to the inlet of the screen. The cyclone contains: the body consisting of the cylindrical and conical parts; arranged in its upper part the peripheral inlet of the gas stream and the axial outlet fitting pipe of the purified gas; the acoustic column, which in its lower part is connected to the axial outlet fitting pipe of the purified gas and contains the conical fender washer mounted with its bigger base in the lower base of the acoustic column; and the concavity formed by the surfaces of the fender washer and the column is linked by the bypass shoe with the peripheral inlet of the gas stream. In the upper part of the acoustic column there is the outlet fitting pipe of the purified gas and the generator of the sound vibrations connected to the control unit. On the cylindrical part of the body there is the fixed ring rigidly linked through the brackets with the base or the stand; and the rest cylindrical part of the body with the conical part are fixed to the ring by means of the additional ring and the resilient component. At that the vibrator with the control unit is arranged on the ring, which is rigidly linked with the conical part of the cyclone and with the base through the resilient component. The fine screen has the form of the sleeve-type screen. The technical result of the invention is the increased efficiency of the dust catching.

EFFECT: the invention ensures the increased efficiency of the dust catching.

2 cl, 2 dwg

FIELD: dust trapping processes and equipment.

SUBSTANCE: dust trapping installation includes inlet branch pipe and outlet branch pipe, screw like lid, exhaust pipe, cylindrical and cone portions. Ring is mounted on cylindrical portion for supporting vibration exciter with control unit. The whole cyclone is suspended by means of springs with use of beam joined with outlet branch pipe. Filter is in the form of hose filter with regeneration system.

EFFECT: enhanced efficiency of dust trapping.

2 cl, 1 dwg

FIELD: dust trapping processes and equipment, possibly used in chemical, food making, textile and other industry branches for cleaning dust-laden gases.

SUBSTANCE: dust trapping unit includes cyclone and filter mutually connected through air conduit in such a way that to provide connection of outlet of cyclone with inlet of filter. Cyclone includes inlet branch pipe, outlet branch pipe, helical lid, exhaust tube, cylindrical and cone portions of housing. Ring mounted on cylindrical portion of housing supports vibration exciter with control unit. The whole cyclone is suspended by means of springs with use of beam joined with outlet branch pipe. Filter is in the form of filtering cartridge.

EFFECT: enhanced efficiency of dust trapping.

2 cl, 1 dwg

FIELD: dust collection.

SUBSTANCE: device comprises cyclone and fine filter that are interconnected. The cyclone is composed of cylindrical and conical sections, peripheral branch pipe for supplying gas and axial branch pipe for discharging cleaned gas, and acoustical tower connected with the axial outlet branch pipe and provided with conical deflecting washer. The greater base of the washer bears on the bottom base of the tower. The space defined by the surfaces of the deflecting washer and the tower is connected with the peripheral inlet for gas flow through the by-pass branch pipe. The top section of the acoustical tower receives the outlet branch pipe for cleaned gas and generator of sound vibration connected with the control unit. The fine filter is made of a hose filter provided with the system of regeneration. The filter has a single housing provided with the lid. The housing receives the filtering member of hose type, ducts for supplying contaminated air and discharging the cleaned air, hopper provided with the device for continuous discharging of the waste and having hopper, intermediate chamber, and screw mechanism for discharging. The system of regeneration of filtering members is made of a frame provided with the vibrator for shaking. The housing of the filter block receives temperature gage. The hopper for collecting dust receives the alarm dust level pickup. The outlet duct receives the heat automatic alarm pickup whose outputs are connected with the common microprocessor mounted in the control unit. The outlet duct receives the collector provided with nozzles for connecting with the system of fire-fighting whose control unit is connected with the common microprocessor. The system of regeneration of hose filters has the control unit that is connected with the common microprocessor and outstanding control desk.

EFFECT: enhanced efficiency of dust collecting.

1 cl, 1 dwg

FIELD: power engineering; ferrous and nonferrous metallurgy; cement industry; gas sweetening from a dust.

SUBSTANCE: the invention presents a dust catching apparatus intended for gas sweetening from a dust in different fields of industry, in particular, in power engineering, ferrous and nonferrous metallurgy, cement industry, etc. The dust-catching apparatus includes an electro filter and in series with it installed a fabric filter with a ratio of their active volumes as 0.1-0.9. The apparatus ensures: a maximum efficiency of gas cleaning irrespective of concentration of a dust in the cleaned gas, its dispersity and specific electrical resistance; a big service life between repairs.

EFFECT: the dust catching apparatus ensures a maximum efficiency of gas cleaning and a big service life.

3 cl, 2 dwg

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