RU2250797C1 - Gas scrubber-humidifier - Google Patents

Abstract

FIELD: filters of scrubbing of gases.

SUBSTANCE: the invention is pertinent to the filters of gases scrubbing and humidifying and may be used for air scrubbing of spaces of industrial and accommodation premises from a dust, odors and the air moistening. The gas scrubber-humidifier contains a body 1 with an inlet aperture 2 and outlet aperture 3, a bath 4 for a liquid. A fan 5 with the drive 6 are connected to the inlet aperture 2 of the body 1. Filtering members are made in the form of driving and driven disks correspondingly 7 and 8 on shafts 9, bound with a motion transfer mechanism 10 to them with a drive. The control unit 11 is linked with the drive 6, with the motion transfer mechanism 10. The butt surfaces 12 of discs 7, 8 are supplied with studs 13 located with a positive allowance from each other. Studs 14 having a smooth external surface are radially located on a cylindrical surface 15 of discs 8 with a positive allowance from each other. The drive 6 rotates the fan 5. which sucks a dusty gas through inlet aperture 2 and directs it to the filtering members made in the form of discs 7, 8. At rotation surfaces of discs 7, 8 are periodically dipped into the liquid of the bath 4, and at coming out of the liquid they are blasted by the dusty gas. At that the dust adheres to the wet surfaces of the discs 7, 8. At entering into a liquid a dust from discs 7, 8 will be washed off. The availability of studs 13, 14 on butt and cylindrical surfaces 12, 15 of discs 8 increases area of surface to contact the dust particles in an airflow. Studs 13, 14 are stirring a stream of a dusty air, create a turbulence in the space between discs 8, increase the speed a stream near the surface of the discs 8, that also increases probability of a dust contact with the discs 8 and studs 13, 14 dust settling surface. At that the studs 13, 14 also are cleaned from the stuck dust corpuscles at entry in a liquid. The invention allows to increase efficiency of clearing of the dusty gas and to improve clearing (regeneration) of the filtering members and their parts during the filter operation.

EFFECT: the invention allows to increase efficiency of clearing of the dusty gas and to improve clearing of the filtering members and their parts during the filter operation.

10 cl, 9 dwg

Description

The invention relates to filters for wet cleaning of gases from dust, drops, aerosol.

A filter is known, through which a contaminated gas is supplied through a filter element made in the form of a perforated frame fitted with filter material installed inside the housing, which is partially delayed by the filter element (see AS USSR No. 13219802, MKI B 01 D, 45/08, op. 1987).

The disadvantage of the filter is the low efficiency of gas purification, the absence of active regeneration (washing) of the filter in the process of purification and humidification of the gas.

A known filter for wet gas purification, through which a contaminated gas is supplied through a filter element made in the form of several perforated frames fitted with filter material installed inside the housing, is sprayed in front of the filter element and a flushing medium is passed outside the filter element in the form of liquids (see Russian patent No. 20509141, MKI B 01 D, 46/00, op. in B.I. No. 36, 1995).

This filter has a higher gas cleaning efficiency, as washing with a liquid flushes out a certain part of the impurities that trap the cells of the filter material of the filter element, and part of the dust settles in front of the filter element due to the formation of liquid droplets when the jets are crushed on the body. This filter provides humidification of gas.

The disadvantage of the filter is that part of the dust adheres inside the cells (holes) of the filter material, and the flushing medium is supplied tangentially only along the outer surface at a low speed and low flow rate and is not able to wash off these particles that are on the inner walls of the cells, the holes of the filter material. Dust is fixed in places of interweaving wicker material or inside the fibers of bulk material. The noise level when applying the flushing medium is significant. Over time, the filter element becomes contaminated and requires external regeneration (radial washing with high-speed flows) or its replacement. The efficiency of gas purification and regeneration of filter elements during filter operation is low. The use of filter elements with a small cell size in order to increase the fineness of filtration leads to their fast clogging and failure.

Known gas humidifier-cleaner, comprising a housing with inlet and outlet openings, a fluid bath, a drive, a fan associated with the housing inlet, filter elements made in the form of disks perpendicular to the axes associated with the transmission mechanism of movement, a control unit associated with a drive (see patent DE 3308871, F 24 F 6/06, B 01 D 47/18, op. 13.09.84).

The disadvantage of this device is the small contact surface of the disks with a dusty gas stream and the difficulty of their regeneration during the cleaning process.

A known apparatus for wet gas purification, containing a partially filled with liquid housing in which a rotating drum is mounted with elastic threads fixed to its surface, similar to spikes. When the drum surface enters the liquid, the elastic threads fixed on it are wetted, the surface of which is lyophilic, and in the zone of passage of the dusty gas stream, it comes into contact with the dusty liquid on the threads and with many small drops, which increases the contact surface (see ac SU 978895 A. B 01 D 45/12, op. BI 07.12.82). The height of the spikes is limited by their low stiffness, increasing the diameter of the drum increases the dimensions of the device and leads to inefficient use of the volume of the drum.

The objective of the invention is to increase the efficiency of purification of the gas to be cleaned, to increase the fineness of filtration, to improve the purification (regeneration) of filter elements and their parts during operation of the gas humidifier cleaner.

The problem is solved in that in the gas purifier-humidifier comprising a housing with inlet and outlet openings, a liquid bath, a drive, a fan connected to the housing inlet, filter elements made in the form of disks perpendicular to the axes connected to the transmission mechanism movement, the control unit associated with the drive, and the surface of the filter elements are made with elastic threadlike elements on their cylindrical part, with a gap relative to each other, mechanical and cylinders The surfaces of the disks are made with spikes with a gap relative to each other and having a different cross-sectional shape: round, elongated, rectangular with rounded corners, elliptical, and equipped with humidity sensors connected to the surfaces of the disks and spikes at the place of the possible entry of the disks and spikes into liquid, an ultrasonic radiation device attached to the bath, which together with the transmission mechanism are connected to the control unit, in addition:

- it is equipped with an element of deformation of the spikes in the form of a fixed plate connected to the body, the bathroom and installed with the possibility of contact and deformation of the spikes during rotation of the disks;

- the spikes are arranged to be angled to the gas flow of the major axis of the profile;

- the spikes are located on the end surfaces of the adjacent disks and are located opposite each other with a gap, while the height of the spikes is made less than half the gap between the disks;

- the spikes are located on the end surfaces of the adjacent disks in a staggered manner with the possibility of entering the spike of one disk between the spikes of another disk, while the height of the spikes is more than half the gap between the disks;

- the spikes are inclined, for example, in the direction from the axis of rotation of the disks;

- the surface of the spikes are made with adjustable microrelief - micro-recesses in the form of holes, grooves, grooves, protrusions, adjustable roughness;

- the protrusions on the surface of the spikes are made in the form of additional spines located at an angle to the axis of the spikes and with a gap relative to each other.

Figure 1 shows a diagram of a gas purifier-humidifier; figure 2 is a section aa of figure 1; figure 3, 4 - sections BB, BB in figure 2; figure 5 is a view of figure 4; 6 is a disk shape (section aa); 7 is a surface shape of the spikes; on Fig - the shape of the radial spikes; figure 9 is a cross section (profile) of the spikes.

The gas purifier-humidifier (Fig. 1) comprises a housing 1 with an inlet 2 and an outlet 3 openings, a liquid bath 4, a drive 5, a fan 6 connected to the inlet 2 of the housing 1. The filter elements are made in the form of leading 7 and driven disks 8, which are perpendicularly located and fixed on the axes 9 associated with the transmission mechanism 10 (worm, friction or other transmission) movement to them from the drive 5 or from an autonomous drive. The control unit 11 is connected to the drive 5. The end surfaces 12 of the disks 8 (filter elements) are made with spikes 13, 14 located with a gap relative to each other, which can be elastic, rigid and made in a circular cross-section (Fig. 9), elongated , for example, rectangular, elliptical in shape. The spikes 13 are located on the end surfaces 12 of the adjacent disks 8 opposite each other with a gap "a", while the height "h" of the spikes 13 is made less than half the gap "H" between the disks 8. The spikes 13 on the adjacent disks can be located in a checkerboard pattern with the possibility of a stud 13 of one disk 8 between the spikes 13 of another disk 8, the height of the spikes "h1" more than half the gap "H" between the discs 8. The spikes 13 can also be inclined, for example, in the direction from the axis 9. The spikes 14 are radially located on the cylindrical surface of 15 disks 8 s a gap relative to each other. The disk 8 can be made with a small outer diameter and large width (one disk instead of many) with many radially spaced long spikes 14 (Fig.6). The spikes 13, 14 of the disks 8 can be made with the possibility of arrangement at an angle to the gas flow of the major axis 25 of the profile of the spike 14 (non-circular shape). The large axes of 25 different spikes can be located at different angles to the flow of dusty gas.

The gas humidifier cleaner-humidifier can be equipped with deformation elements of the elastic studs 13, 14 (Figs. 2, 3, 4) in the form of fixedly mounted plates 16, 17 attached to the housing 1 (bath 4) and installed with the possibility of contact and deformation of the studs 13, 14 in the liquid during the rotation of the disks 8.

The cleaner-humidifier is equipped with humidity sensors 18 (Fig. 1) associated with the surfaces of the disks 8, spikes 13, 14, which, together with the transmission mechanism 10 of the movement, are connected to the control unit 11.

The gas purifier-humidifier can be equipped with an ultrasonic radiation device 19 (Fig. 2), attached internally to the bath 4 and connected to the control unit 11.

In the gas purifier-humidifier, the surfaces of the spikes 13, 14 (Fig. 7) can be made not smooth, but with adjustable

microrelief - micro-depressions in the form of holes 20, grooves 21, grooves 22, protrusions 23, an adjustable roughness parameter, for example, R _z 160 ... 400.

The protrusions 23 of the spikes 13, 14 of the disks 8 (Fig. 8) can be made in the form arranged at an angle to their axis, for example, perpendicularly and with a gap relative to each other with additional spikes 24 (Fig. 9).

The liquid in the bath 4 is poured just above the level of the axes 9.

The operation of the gas humidifier cleaner

The drive 5 is turned on, which drives the fan 6, while the dusty gas is sucked in through the inlet 2 and directs it to the filter elements in the form of disks 7, 8. The transmission mechanism 10 drives the drive disks 7, which drive the driven disks 8, because all disks 7, 8 are connected to each other through the axis 9 (for example, mounted on it) or using other communication elements between the disks. The transmission mechanism 10 is connected with the drive 5 or with an autonomous drive (not shown), intended only for the rotation of the disks 7, 8. When the surface of the disks 7, 8 is rotated, the baths 4 are periodically dipped into the liquid, then, when exiting the liquid, they are blown by a dusty gas. In this case, the dust adheres to the wet surfaces of the disks 7, 8. When it enters the liquid, the dust from the disks 7, 8 is washed off. The presence of spikes 13, 14 on the end 12 and cylindrical 15 surfaces of the disks 8 increases the surface area of the disks 8 for contact with dust particles of the air flow. The spikes 13, 14 mix the flow of dusty gas, create turbulization in the space between the disks 8, increase the flow rate at the surface of the disks 8 and the probability of dust contacting the deposition surface of the disks 8 with the spikes 13, 14.

The execution of the spikes 13 in a checkerboard pattern on adjacent disks 8 with the possibility of a stud 13 of one disk 8 between the spikes 13 of another disk 8, where the height of the spikes "hi" is more than half the gap "H" between the disks 8, allows more intensive mixing of the flow of contaminated gas, make him move along a zigzag path. In this case, centrifugal forces act on the dust particles, which discard them on the deposition surface. The implementation of the spikes 13 with an inclination, for example, in the direction from the axis 9 provides a more complex trajectory of dusty gas along a zigzag path, which improves the processes of deposition and flushing of dust particles from the spikes 13 (it easier to flow down from the spikes in the liquid under the action of gravity).

The implementation of the spikes 14, radially located on the cylindrical surface 15 of the disks 8 with a gap relative to each other, can increase the deposition area for dust.

The execution of the lateral surface of the disks 7, 8 with spikes 13 increases not only the dust particle deposition surface due to the considerable surface area of the spikes 13. Since they are covered with a thin liquid film, the moisture evaporation area increases - the moistening process is intensified, as well as the process of sorption of high molecular weight compounds: esters, resins (unpleasant odors), harmful gases (CO) in a thin film of a large area liquid.

The implementation of the studs 13, 14 with elastic properties allows them to deform, and after removing the deformation force, return to their original state. When blowing them with a dusty gas, they can slightly deform and vibrate with a small amplitude of a certain frequency (with the correct calculation of their elastic characteristics), and this improves the dust separation process (increases the possibility of contact with dust particles during vibration and mixing of a dusty gas). In addition, this property improves the cleaning process of the studs 13, 14 when entering the bath liquid 4. Introduced deformation elements of the studs 13, 14 in the form of fixedly mounted plates 16, 17 (Figs. 2, 3, 4) associated with the housing 1 s with the possibility of contact and deformation of the spikes 13, 14, when the disks 8 rotate, they can slow down the movement of the spikes 13, 14. In this case, the spikes 13, 14 are deformed, bend, then slide off the plates 16, 17 at high speed, vibrate in the liquid for some time. This ensures their effective cleaning, as the rotation speed of the disks 8 is very small and the dust that adheres to the surface of the spikes 13, 14 and disks 8 is washed off with difficulty, without such a device. In this case, vortex flows are created in the liquid, which ensure effective cleaning of not only the tops of the spikes 13, 14, but also their bases, the surfaces of the disks 7, 8.

The implementation of the spikes 13, 14 in the form of bristles (they can be hard) allows them to be made with a diameter of less than 1 mm (up to 0.05 mm from carbon fiber, polyamide 6, polypropylene, for example), which allows to increase the fineness of filtration, arrange them with a gap of 0.05 .. .0.2 mm relative to each other, increase the area of deposition for dust due to the huge number of bristles.

Providing a gas humidifier-humidifier with humidity sensors 18, connected to the surfaces of the disks 8 and the spikes 13, 14 and the control unit 11, allows you to adjust the speed of the disks 8 so that the surfaces of the disks 8 and the spikes 13, 14 are constantly wet when entering the liquid for cleaning after deposition on their surfaces of dust from a stream of dusty gas. If the surfaces of the disks 8 and the spikes 13, 14, while passing through a stream of dusty air, have time to dry before they enter the liquid and the dirt is washed off, it is possible that the gas stream will become contaminated with dust particles behind, or a good adhesion to the dust deposition surface of the disks 8, spikes 13, 14 (cementation of dust particles into conglomerate), which complicates their washing off in the future. Often, dust particles are electrified, this enhances their adhesion to the deposition surfaces and further complicates the process of separation. Depending on the temperature, humidity of the dusty gas, the design of the gas humidifier-humidifier (determines the gas flow rates), the rate of liquid evaporation from the surface of the disks 8 and the spikes 13, 14 will be different, which requires a change in their rotation speed.

The presence of the spikes 13, 14, especially their bristle shape, provides better fluid retention on the surface of the spikes 13, 14 of the disks 7, 8 due to the capillary effect at the base of the spikes when blowing with contaminated gas (as compared to smooth disks).

The implementation of the surface of the spikes 13, 14 (Fig.7) with an adjustable microrelief - micro-recesses in the form of holes 20, grooves 21, grooves 22, protrusions 23, an adjustable roughness parameter ensures the retention of liquid in them due to the capillary effect and replenishment of the liquid film on the spikes 13, 14, which reduces the rate of its drying when blowing with a dusty gas, eliminates the drying of adhering dust particles and improves the process of moistening the gas.

For the spikes 13, 14, when performing their large lengths and small diameters of the disks 8 (Fig. 8), it is difficult to provide a given stiffness. In this case, they are performed with an increased diameter and with protrusions located on their outer surface at an angle to their axis, for example perpendicularly, with spikes 24, which are located with a gap relative to each other. In this case, the stiffness of the studs 13, 14 increases, and

the filter fineness is increased due to the presence of spikes 24, which cut the stream into microflows, increase the area of deposition for dust. The execution of the cross-section of the spikes 13, 14 of an elongated shape, for example, rectangular with rounded corners, is elliptical, with the possibility of a large axis 25 along the flow and at a small angle to the gas flow, it increases their rigidity in the direction of gas flow (reduce thickness). The location of the large axes 25 of the various spikes 14 at different angles to the dusty gas stream ensures gas movement along a zigzag path, intensive mixing, the action of inertial forces on dust particles, which increases the efficiency of its deposition.

Providing a gas humidifier-humidifier with an ultrasonic radiation device 19 attached to the bath 4, which is connected to the control unit 11, improves the cleaning process of the studs 13, 14 and disks 8. The ultrasonic emitter 19 is periodically turned on, ultrasonic vibrations are transmitted to the liquid, and it creates micro-vortex flows leading to cavitation, which ensures complete cleaning of the dust deposition surfaces of the disks 8 and the spikes 13, 14, which are currently in the liquid. Moreover, disks 8 with spikes 13, 14 and spikes 24 can never be disassembled for periodic cleaning of contaminants that accumulate over time due to incomplete cleaning in the liquid. The control unit 11 includes an ultrasonic radiation device 19 periodically, for example, for 1 ... 10 c once in 1 ... 5 minutes, or once a day (week) for the full rotation of the disk 8. Perhaps the operation of cleaning the disks 7, 8, tenons 13, 14 to do before changing the contaminated fluid. In this case, turn off the fan 5, turn on the motion transmission mechanism so that the disks 7, 8 rotate at an increased speed (one revolution in 1 ... 5 min). At this point, they are ultrasonically cleaned. In this case, it is possible to change the radiation frequency, amplitude according to a certain law for effective cleaning of dust deposition surfaces.

This gas humidifier cleaner can be used to purify gases in industry and industrial, domestic air from dust, odors, harmful aerosols to ensure its humidification.

Claims (10)

1. Gas humidifier cleaner, comprising a housing with inlet and outlet openings, a fluid bath, a drive, a fan associated with the inlet of the housing, filter elements made in the form of disks perpendicular to the axes associated with the transmission mechanism of movement, a control unit, associated with the drive, characterized in that the end and cylindrical surfaces of the disks are made with spikes arranged with a gap relative to each other and having a circular or elongated cross-section or rectangular shape in cross section with rounded corners, or elliptical, while the humidifier-cleaner is equipped with a tenon deformation element in the form of a fixed plate connected to the body, bathtub and installed with the possibility of contact with the tenons during rotation of the disks. 2. The gas purifier-humidifier according to claim 1, characterized in that the spikes are made with elastic properties. 3. The gas purifier-humidifier according to claim 1, characterized in that the spikes having an elongated shape in cross section are configured to be located at an angle to the gas stream along the major axis of the profile. 4. The gas purifier-humidifier according to claim 1, characterized in that the spikes are located on the end surfaces of adjacent disks and are located opposite each other with a gap, while the height of the spikes is less than half the gap between the disks. 5. The gas purifier-humidifier according to claim 1, characterized in that the spikes are located on the end surfaces of adjacent discs in a checkerboard pattern with the possibility of a spike of one disc between the spikes of another disc, the height of the spikes being more than half the gap between the discs. 6. The gas purifier-humidifier according to claim 1, characterized in that the spikes are inclined, for example, in the direction from the axis of rotation of the disks. 7. The gas purifier-humidifier according to claim 1, characterized in that the surface of the spikes is made with an adjustable microrelief - micro-recesses in the form of holes, grooves, grooves, protrusions, adjustable roughness. 8. The gas purifier-humidifier according to claim 7, characterized in that the protrusions on the surface of the spikes are made in the form of additional spikes located at an angle to the axis of the spikes and with a gap relative to each other. 9. The gas purifier-humidifier according to claim 1, characterized in that it is equipped with humidity sensors associated with the surfaces of the disks and spikes at the place of possible entry of the disks and spikes into the liquid. 10. The gas purifier-humidifier according to claim 1, characterized in that it is equipped with an ultrasonic radiation device attached to the bath, which together with the transmission mechanism are connected to the control unit.

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