SU1655578A1 - Battery vortex deduster - Google Patents

Description

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(21) 4705795/26 (22) 06/15/89 (46) 06/15/91. Bul №22

(71) Moscow Institute of Chemical Engineering

(72) S.K.Karepanov, E.F.Shurgalsky, E.V. Frolov and I.A. Petrov (53) 621.928.93 (088.8)

(56) US Patent No. 3466853, cl. 55-1,16969. (54) BATTERY VORTEX DUST COLLECTOR

(57) The invention relates to a technique for cleaning gases from dust and can be used in the chemical, food and other sectors of the national economy. The purpose of the invention is to reduce energy consumption and specific metal consumption. Dust collecting elements 1 are located close to each other with axes at the vertices of a regular hexagon. Dust-laden gas is fed through nozzles 15 and 16 and is divided into primary and secondary. The primary flow through the nozzle 16 is introduced into the distribution chamber 11 formed between the elements and evenly distributed between the individual elements 1. In each element, the primary gas flow, passing through the nozzle 23, is twisted with a screw swirler 3 and the resulting vortex flow moves upwards, dust particles under by centrifugal forces move to the walls of element 1 and enter the zone of rotation of the downward secondary flow, which is introduced into the dust collector in the gap between the pipes 15 and 16, and in the chamber 14 is evenly distributed mc on individual elements. The secondary flow in each element transports the dust particles down, where in the gap between the body of the element 1 and the fender washer 5 they fall into the cavity of the chamber 12. The cleaned gas is discharged through the nozzles 6, unwound by the cochlea 17, connected in pairs to the neighboring elements and removed from the apparatus. 2 hp f-ly, 3 ill.

The invention relates to a technique for cleaning gases from dust and can be used in the chemical, microbiological, food industry and other sectors of the national economy.

The aim of the invention is to reduce energy consumption and specific metal consumption.

FIG. 1 shows a battery vortex dust collector, general view; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1.

The battery vortex dust collector consists of six dust collectors 1 installed close to each other with axes at the vertices of the hexagon

Each of which has an axial inlet 2 of the primary flow with a screw swirler 3, a fairing 4 and a fender washer 5 forming a peripheral outlet with the element wall, and an exhaust pipe 6 with a screw swirl 7. Dust collecting elements 1 are mounted on tube plates 8, 9 and 10 The tube plate 8 serves to separate the cavity of the common lower distribution chamber 11 of the primary flow formed by the elements in the center of the hexagon from the cavity of the common dust collection chamber 12. The space bounded by tube plates 9 and 10 and the sheath ike 13 forms a common to all

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elements 1 upper distribution chamber 14 of the secondary stream. A nozzle 15 is provided for introducing the dusty gas into the dust collector, mounted at the top of the dust collector along its central axis and communicating with the common distribution chamber 14 of the secondary stream. Inside the pipe 15 is concentrically mounted pipe 16 connected to the cavity of the common distribution chamber 11 of the primary stream. The exhaust nozzles 6 of each pair of adjacent elements 1 end with the unwinding scroll 17, while the screw swirlers 3 and 7 of the neighboring elements 1 have the opposite direction of winding. The cochlea 17 ends with the nozzles 18. The cavity of the common distribution chamber 14 is provided with flat radial partitions 19 dividing it along its entire height into equal sectors, with an entrance to the annular gap between the shell of the element 1 and the exhaust nozzle 6, which forms the peripheral input of the element . In the distribution chambers 11 and 14, the fairings 20 and 21 are installed in the opposite direction to the gas flow, respectively, providing unstressed gas injection into the working cavities of the individual elements 1. The dust collector 12 is provided with a branch pipe 22. The inlets 2 are connected to the chamber 11 by nozzles 23.

Battery vortex dust collector works as follows.

Dust-laden gas is supplied through the nozzle 15, where its flow is divided into two — the primary flow entering the cavity of the chamber 11 through the nozzle 16 and the secondary flow entering the cavity of the chamber 14 through the annular gap between the nozzles 15 and 16. The primary flow passes from top to bottom The SWITCH of chamber 11 is evenly distributed between six inlets of 2 separate elements through nozzles 23. A shock-free gas inlet, which provides minimal hydraulic resistance when the flow is turned through 180 ° and is evenly distributed among the elements 1 There is a fairing 20. In each element, the primary gas flow, passing through the nozzle 23, is twisted by a screw swirler 3 and the resulting vortex flow moves upward in the central zone of the element 1. Under the action of centrifugal forces, the dust particles contained in the flow move towards the body walls. 1 and fall into the zone of the downstream secondary stream. The secondary flow, entering the distribution chamber 14, is evenly distributed between all the elements. To this

baffles 19, which divide the entire chamber 14 and the annular gap between the nozzles 15 and 16 into sectors, contribute. In each element 1, the secondary thread is twisted.

screw swirler 7 and the vortex flow moves down along the periphery of the body of element 1. As it moves down in the secondary flow, dust is concentrated, which in the gap between the body of element 1 and from the striker washer 5 is transported to the common for all elements chamber 12, and the secondary flow at the surface washers 5 reverses the direction of movement and is added to the primary

5 flow. The cleaned gas stream through the pipe 6 moves upward, unwinds in the cochlea 17 and leaves the dust collector.

The arrangement of a battery dust separator consisting of six separate elements mounted close to each other, the axes of which run through the vertices of a regular hexagon, ensures optimal ratios between all geometrical parameters5, which are necessary for achieving maximum efficiency with minimum hydraulic resistance (energy consumption). So, the cross-section of the primary distribution chamber 11

0 is equal to six sections of the nozzle 23 for introducing the primary flow into a separate element. The fulfillment of this condition ensures the distribution of the gas flow through the nozzles of 23 individual elements without changing

5 of its speed, which is a condition of minimum hydraulic resistance.

Reducing the number of elements, for example up to five, with a constant amount of gas to be purified leads to an increase in the diameter of individual elements, which in turn leads to a decrease in efficiency and, as mentioned above, violates the relationship between the geometrical parameters, which causes an increase in

5 of the hydraulic resistance. Increasing the number of elements, for example, up to seven, leads to an increase in the specific metal consumption (metal intensity per unit volume of the gas to be purified) of the dust collector.

0 The main condition for the operation of the vortex dust collector in the maximum efficiency mode is to ensure an optimal ratio between the primary and secondary flow rates. Another condition is added to the battery of the vortex vortex dust collector:

uniform distribution of both primary and secondary flows by individual elements, in the proposed design of the battery dust collector

The first condition is fulfilled by selecting the optimal ratio between the diameters of the nozzles 15 and 16. The second condition is provided due to the symmetry of the design of both the chamber 14 and the chamber 11 relative to the nozzles of the inlet 15 and 16, respectively. In addition, the presence of vertical partitions 19 also contributes to the uniform distribution of the secondary flow among the individual elements.

The minimum hydraulic resistance of the apparatus, in addition to the optimal geometric ratios, which are hexagonal, is ensured by performing unstressed primary and secondary flows, minimizing sudden changes in speed in distribution chambers and the presence of unwinding snails on the exhaust pipes.

Thus, the application of the proposed battery dust collector allows the cleaning of large volumes of dusty gas with maximum efficiency and minimum energy consumption, as well as low specific metal consumption. If it is necessary to clean very large quantities of gas, the battery-type dust collectors of the proposed design are very conveniently assembled into cells, which greatly saves production space.

Claims (3)

1. Battery vortex dust collector containing installed close to each other with axes located in the vertices of a regular polygon, cylindrical dust-collecting elements having axial lower and peripheral upper inlets with swirlers, axial upper exhaust pipes, peripheral leads of the collected dust, dust collector separated by tube plates, and a dust collection chamber and distribution chambers, the upper part of which is connected to the peripheral inputs of the elements, and the bottom is connected nozzles with axial inlets of the elements, and nozzles for introducing dusty gas and dust outlets, attached to the respective chambers, characterized in that, in order to reduce energy consumption and specific metal consumption, the axis elements are located at the vertices of the hexagon, forming the lower distribution chamber in the center, the nozzles for introducing the dusty gas are located concentrically at the center of the hexagon, and the exhaust the nozzles of each pair of adjacent elements are equipped with a spindle snail. 2. A dust collector according to claim 1, characterized in that the upper distribution chamber is provided with radial partitions located between the elements. 3. A dust collector according to claims 1 and 2, in which they are equipped with a fairing. sixteen Schi g 2 nineteen 16 CLEANED gas 17 Purified 203 ftsg.Z