SU1220682A1 - Apparatus for cleaning gases from dust - Google Patents

Description

The invention relates to the purification of gases from dust and can find prim. Changes in various industries such as energy, metallurgy, chemical.

The purpose of the invention is to reduce energy consumption by using the energy of a swirling flow in a cyclone to coagulate dust.

BA drawing shows a diagram of the proposed device.

The device comprises a coagulum gas duct I, a continuous cyclone chamber 2 connected in series along the gas flow by cyclone 3 with inlet 4 and exhaust pipe 5, cyclone 6 with inlet 7 and exhaust pipe 8, vortex dust coagulator made in the form of coaxially placed the exhaust pipe 5 of the cyclone 3 of the cylinder-conical chamber 9 with the axial lower opening 10 attached to the exhaust pipe 5 and the axial upper outlet pipe 1I buried in the chamber 9 and connected to the inlet 7 of the cyclone 6, a vortex dust coagulator having chamber 12 with hole 13 and out A single pipe 14 connected to the apparatus 15 for fine gas cleaning.

The device works as follows.

The gas stream to be cleaned, containing dust that is prone to coagulation (smelting sublimates, soot, etc.) comes from the dusting source to the gas duct-coagulator 1, in which turbulent coagulation occurs at high gas velocities. Further the gas flow enters the continuous cylindrical cyclone chamber 2 (with a sufficient length of the coagulum gas duct, this chamber may be absent and gases immediately enter the cyclone H), where it acquires a rotational motion and moves along the outer helix to the upper part of the chamber, and due to the radial drain most of the gases leaving the chamber through the inner coil through the outlet without reaching the top of kamerch. The bulk of the plush under the influence of centrifugal forces is carried out of the curve of gas movement towards the wall and further forward movement

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gases are entrained along the wall towards the upper part of the chamber. On the periphery of the cyclone chamber and especially between the lid of the chamber and the cut of its output

The 5 nozzle creates an area of increased dust concentration (dust ring), by an order of magnitude and greater than the concentration of dust in the gas being purified, which contributes to

 On the increase in the probability of collision of particles and, consequently, the intensification of their coagulation. With specific physico-chemical parameters of the gas-gas mixture, there is a well-defined maximum concentration of dust in the dust ring, upon reaching which a dynamic equilibrium sets in, between the process of loading and unloading the dust ring. The discharge of the dust ring occurs due to the turbulent transfer of coagulated particles from the area of the dust ring to the internal spiral gas flow. Some of the dust entering the inner spiral stream immediately after entering the chamber does not practically coagulate due to its low concentration and therefore there is a distinct difference in the outlet nozzle of the chamber between the coagulated particles of the coarse coming from the dust ring and the above uncoagulated particles, i.e. the degree of polydispersity of dust increases significantly, which also contributes to their further coagulation in the gas duct. Next, the gas stream enters the first along the gas cyclone 3, in which there is a partial capture of the dive. In the exhaust pipe of the cyclone, there is an intense rotational movement of gases, with the sex of the axial gas velocities, concentrations and mass flow rates of the fluff having a pronounced maximum at the periphery of the exhaust pipe, which makes it possible to use the cylindrical-conical chamber not captured in cyclo5Q to coagulate The gas stream of the cyclone 3 enters. The process of coagulation of dust occurring in this chamber is fundamentally similar to that described.

55 coagulations in a continuous cylindrical cyclone chamber 2. Next, the gases are successively fed into cyclone 6 and chamber 9.

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The use of chamber 9 is advisable: Reducing the power consumption of the device when the dust removal is achieved by using the ability of the fine filter to swirl in the cyclone substantially depends on the dispersity of the dust to coagulate, because dust. For final cleaning, the gases, the shape and location of the vortex are sent to the apparatus 15 of fine coagulators to ensure their effective cleaning, from which they are brought to atmospheric operation without additional fermentation, or are delivered to the consumer, energy costs.

Claims (2)

1. DEVICE FOR CLEANING A GAS DIESEL FROM DUST, containing cyclones connected in series along the gas, located between the outlet pipe and the gas inlet of two adjacent cyclones, a vortex dust coagulator and a fine gas purifier, characterized in that, in order to reduce the energy intensity by using swirling energy in the cyclone of the flow for dust coagulation, the vortex dust coagulator is made in the form of a cylindrical conical chamber placed axially on the exhaust pipe of the cyclone chamber with an axial lower hole nnym to the exhaust pipe of the cyclone, and the upper axial outlet duct, recessed ^{into the} chamber. 2. The device according to claim 1, characterized in that each cyclone is equipped with a vortex dust coagulator. <