CS206785B3 - Dust separator and/or absorber - Google Patents

Description

(54) Dust separator and / or absorber

The invention relates to a dust separator and / or abeorbar according to the author's certificate No. 172696. The proposed device is suitable for separating solid or gaseous impurities from a gas.

At present, many types of equipment are used for dust separation or absorption, the operation of which is based on various physical elements of chemical principles. One of these devices is a turbulent contact absorber and / or solid particle separator from the gas stream described in the author's certificate No. 172696. The essential part is a spray liquid sump containing a light spherical particle charge attached to the bottom of a vertical TCA spray. The well has the shape of a horizontal cylinder, where the defining cylindrical flat curve has a diameter with different radii of curvature or is a part of the Arehlmed spiral. The clarified gas is fed through a narrow slot tangentially into the lower part of the sump, drives the charge of contact particles together with the spraying liquid present and the upper part of the sump exits into the column to which the lower part is connected.

The invention described in the author's certificate No. 172696 offers considerable advantages, for example in the extension of the core for both absorption and separation of solid particles, better utilization of the kinetic energy of gas, perfect cleaning of the inner surfaces of the sump with rotating filler particles and many others.

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In the described arrangement of the well, the horizontal dimension of the gas inlet slot is equal to the height of the sump and its outflow is called so as to achieve the xyohlestl of gas necessary to induce retention. The stream of unhindered gas exiting the fluid then entrains the liquid mixture and passes through the wall of the sump until it reaches the root of the vessel, which causes the three-stage cnSal to float, the liquid and the particles fall down and the gas flows up into the column. The width of the lane is given by the centrifugal force induced by the flow of gas and the curved walls of the yoke.

For the separation of the dust particles in the apparatus described above, the inertial mechanism, i.e. the dust particles, is retained and separated from the gas only after the impact and the obstacle that it is necessary to be a Saatloe liquid shatter, a Saatloe filling, but aesthetic wall. The movement of Sáatloe towards the wall is drunk by the centrifugal force. So far, measurements have shown

The overall size of the device according to the author's certificate S, 172696 is high and reaches values of 96 to 98.5 0. The remaining non-self-contained part consists mainly of small parts, which are light in weight and difficult to transport to the sump. The absolute amount of non-entrapped dust would continue to increase as it attempts to sweep the amount of gas in the plant.

The increase in capacity can be achieved primarily by increasing the height of the inlet slot, but this is accompanied by an increase in the thickness of the gas layer flowing through the sump wall pedal and the difficulty of transporting small dust particles to the wall. Another possibility of increasing the capacity by shining the length of the well is uneconomical in terms of purchase costs), increasing the gas input velocity n * d optimally leads in turn to an increase in pressure losses or a high carryover of the mixture from the well. Proudleuilt Dwell Time The dust particles in the gas stream / and thus increase the time that Sástlee may encounter an obstacle / by extending the gas path in the sump - ie to light the radius - are also not recommended. This would require a higher inlet velocity vs crevice, as it would not have been necessary to spend the prane vitality to lift the three-phase mixture to the height vitality. This could only be obtained at the expense of losing pressure losses and this case has been ruled out earlier.

The essence of the dust separator and / or absorber according to the present invention consists in inserting at least one partition of the shape of the cylinder shell part into the separator pit, and preferably along its length. It is further preferred that the curvature of the interposed baffles follow the curvature of the pit wall. The baffles extend upstream of the inlet slots, but at most to the outlet of the sump through which gas passes into the connected column. The distance of the baffles from the wall of the pit and from each other may be at least equal to the diameter of the Sástlee filling * maximum width of the slot - in tem; In this case, the partition effect is lost. The leading edge distance of the bulkheads in front of the inlet bays must be such that Sáatlee cartridges ooitnuvii es as they move on the upper edge of the inlet slot. This distance can be a maximum of five times the height of the inlet slot, since at large distances the load particles are carried to the wall of the well, reducing the screening distance of the baffles in front of the baffles and reducing dust collection in the space between baffles. The minimum value is twice the diameter of the cartridge load. In particular, it is possible to use the filler particles of "various types of particles". The methodology is still in effect. value (3 tMl (average diameters)), which will allow more regular distribution of the load between the baffle-A-increase the reliability and regularity of operation of the device.

The advantages of the proposed solution are also

dividing the stream of purified gas into narrower layers, which shortens the path of the dust particles necessary for its capture. This improves the separation of dust, especially of smaller particles;

In the better utilization of the interior space of the sump, since for the dust separation, the transfer of the mass is particularly effective in that part which flows through the three-phase mixture upwards along the wall;

reduced investment costs due to lower material consumption;

the use of a mixture of particles with drop velocities within the range of 5 to 50 m.s. ^ will ensure good distribution of the rotating particles over the baffles and thus a perfect cleaning of the internal surfaces.

Figure 1 is a schematic cross-sectional view of a dust separator and / or absorber according to the present invention; an overview of the device is shown in Figure 5.2.

The functions of the device and the individual parts of which the device consists consist of Figure 1. The sprinkling liquid flowing into the sump 2 through an aperture 6 from the connected elbow forms a mixture in the sump which is set to rotate by the stream of purified gas supplied by the aperture. After the three phase phase has been discharged through the space between the baffles 1 into the upper part of the well 2, the mixture is separated, the gas flows up into the column and the liquid flows from the filling particles 5 along the rear wall 8 of the well 2 back to the lower part, From there, most of the liquid spray is discharged through the apertures 9 into the drain and the particles of the charge 6, together with the remainder of the liquid, fall from the upper edge 2 of the slot 6 down into the feed gas stream. Depending on the drop velocity (within the range of 5 to 50 ms plynu) and the gas velocity, the charge particles are carried along with the liquid and leading edges 4 of the baffles 2 and further between the baffles 1 where dust particles are separated and exchanged. of heat between gas and liquid. The particles of the charge 6 wipe away dust and dirt by moving. adhered to any surface inside the sump and keeping it clean, making this apparatus particularly advantageous for the separation of sticky dusts. After the mixture is brought to the top of the sump, the mixture is divided and the described process is repeated.

The device according to the invention can be conveniently used in operations where it is necessary to sash the gas or solid admixtures in the gas. They are preferably used where the solid admixtures can be sticky or gel-yellow deposits or suspensions.

Claims (2)

P i S B M £ T V X X 1> Z I 1. Dust collector / absorber, consisting of a vertical column with at least two trays, with a sump of liquid sprays of light contact particles, for example spherical in shape, having a profile and a course of different radii of curvature in its substantial part. and is connected via the inlet part to the inlet - 4 gas and provided with an outlet for the liquid spray according to the author's certificate 172696, characterized in that the separator sump (2) comprises at least one partition (1) in the space between the inlet slot (3) and the outlet opening (4) for a long time in the space between the inlet slit (3) and the outlet opening (4) the walls of the sump by at least one diameter of the head (5) directly in the pit (2) and at most by a length equal to the height of the inlet slot (O), with the inlet gap (3) and the leading edge (6) of the partition (1) equal to at least two particle diameters (5) and at most five times the height of the inlet slot (3). 2. The dust separator and / or absorber according to claim 1, characterized in that a part with a stall velocity in the range from 5 to 50 m.s.