RU2343990C1 - Dust collection system - Google Patents

Abstract

FIELD: technological processes, filters.

SUBSTANCE: invention concerns gas treatment systems. Dust collection system includes source of gas to be cleaned, fan, pipes, four dust collectors at oncoming swirl gas flows, each collector made in the form of cylindrical case with conical tank, tangential top inlet pipe, inlet swirler in bottom inlet pipe, with axial outlet pipe for cleaned gas and dust discharge pipe in which floodgate is mounted, and dampers in pipes. Conical tank of first dust collector has dust and gas mix discharge pipe. Source of gas to be cleaned is connected to tangential inlet pipe and inlet swirler of first dust collector, axial outlet pipe of which is connected to tangential inlet pipe and inlet swirler of second dust collector. Axial outlet pipe of second collector is connected to inlet swirler of fourth dust collector. Dust and gas mix discharge pipe of conical tank of first dust collector is connected to tangential inlet pipe and inlet swirler of third dust collector, axial outlet pipe of which is connected to tangential inlet pipe of fourth dust collector, and axial outlet pipe of fourth collector is connected to the fan inlet.

EFFECT: enhanced efficiency of dusted gas treatment, especially for fine-dispersed particles.

2 cl, 1 dwg

Description

The invention relates to the purification of gas and can be used in the chemical, food, woodworking industries, the production of building materials and products, and in other industries where it is necessary to clean the exhaust gases from fine dust particles.

A known dust collection system containing a source of gas to be purified, a fan and two vortex inertial dust collectors on counter swirling gas flows, each of which is made in the form of a cylindrical body with a conical hopper, with an upper tangential inlet pipe, with an inlet swirl in the second lower inlet pipe with a dust collection conical a washer on the outer surface of the lower nozzle, with an axial outlet nozzle and with a dust outlet in which the lock gate is installed. In this case, the source of the gas being cleaned, the tangential inlet pipe, the cylindrical body, the axial output pipe of the first dust collector, the fan, the tangential inlet pipe, the cylindrical body and the axial output pipe of the second dust collector are connected in series. The fan outlet is connected directly to the input swirl of the second dust collector, the dust outlet of which is connected directly to the input swirl of the first dust collector (see the description of the invention to patent RU No. 2137528, 1999).

The disadvantages of the known system are the lack of organized suction of the dust and gas mixture from the conical hopper of the first dust collector, which does not allow to increase its efficiency, and gas flows with the same dust concentration to the upper tangential inlet and to the input swirl of the second dust collector, which reduces its efficiency.

The task of the invention is to develop a dust collection system that provides increased cleaning efficiency of dusty gas, especially containing highly dispersed particles.

The essence of the invention lies in the fact that the dust collection system containing a source of gas to be cleaned, a fan, pipelines and two dust collectors on counter swirling gas flows, each of which is made in the form of a cylindrical body with a conical hopper, an upper tangential inlet pipe, an inlet swirl placed in the lower inlet pipe, and dust cone washer on its outer surface, with an axial outlet pipe of purified gas and a dust outlet in which the lock is installed the creator differs from the closest analogue in that it is equipped with two additional vortex inertial dust collectors of a similar design and dampers installed on the pipelines, and the conical hopper of the first dust collector is made with an outlet for the dust and gas mixture, while the source of the gas to be cleaned is connected to the inlet tangential nozzle and the inlet swirl the dust collector, the axial outlet of which is in communication with the tangential inlet pipe and the input swirl of the second dust collector, the howling outlet pipe of which is connected to the inlet swirl of the fourth dust collector, the outlet of the dust and gas mixture from the conical hopper of the first dust collector is connected to the tangential inlet pipe and the inlet swirler of the third dust collector, the axial outlet pipe of which is connected to the tangential inlet pipe of the fourth dust collector, the connected dust outlet of the fourth dust collector, to the fan inlet.

Preferably, the first damper is installed on the pipeline connecting the source of the gas to be cleaned with the inlet swirl of the first dust collector, the second damper is installed on the pipeline connecting the axial outlet of the first dust collector to the inlet swirl of the second dust collector and the inlet swirl of the second dust collector the fourth dust collector, a third damper is installed, on the pipeline connecting the outlet of the dust and gas mixture of the first dust collector For the inlet swirl of the third dust collector, a fourth shutter is installed, and on the pipeline communicating the axial outlet of the third dust collector with the tangential inlet of the fourth dust collector, a fifth shutter is installed.

The proposed invention allows:

- through the organized suction of the dust and gas mixture from the conical hopper of the first dust collector, increase its efficiency;

- by connecting the axial outlet pipe of the cleaned gas of the second dust collector to the inlet swirl of the fourth dust collector and the axial outlet of the purified gas of the third dust collector to the inlet tangential branch of the fourth dust collector to ensure gas flows with different dust concentrations and thereby increase the efficiency of the fourth dust collector;

- as a result of increasing the efficiency of the first and fourth dust collectors, provide an increase in the efficiency of the dust collection system as a whole.

The invention is illustrated in the drawing, which schematically shows the proposed dust collection system.

The dust collection system contains a source of gas to be cleaned 1, a fan 2 and four vortex inertial dust collectors 3, 4, 5 and 6 on counter swirling gas flows, each of which is made in the form of a cylindrical body 7 with a conical hopper 8, with an upper tangential inlet pipe 9, s an input swirl 10 located in the second lower inlet pipe 11, with a dust cone 12 located along the axis of the housing 7 on the outer surface of the lower inlet pipe 11, with an axial outlet pipe of the purified gas 13 and from the dust the inlet pipe 14, in which the gate lock is installed 15. The system further comprises five shutters 16-20. The conical hopper of the first dust collector 3 is made with the outlet pipe of the dust and gas mixture 21.

The dust collection system operates as follows. The cleaned dusty gas from the source 1 through the pipeline enters the tangential inlet pipe 9 and through the open damper 16 to the inlet swirl 10 located in the lower inlet pipe 11 of the first dust collector 3, from the axial outlet pipe 13 of which the partially purified gas stream is supplied through the pipeline to the upper tangential the entrance 9 and through the valve 17 to the input swirl 10 located in the second lower inlet pipe 11 of the second dust collector 4. From the conical hopper 8 of the first dust collector 3 through the nozzle 21 dust The new mixture flows to the upper inlet tangential nozzle 9 and through the open damper 19 to the inlet swirl 10 located in the second lower inlet nozzle 11 of the third dust collector 5, from the axial outlet nozzle 13 of which the partially purified gas stream enters the upper tangential inlet 9 of the fourth dust collector 6 . From the axial outlet pipe 13 of the second dust collector 4, the gas flow through the valve 18 is directed to the swirler 10 located in the second lower inlet pipe 11 of the fourth dust collector 6, the axial outlet of the purified gas of which is connected to the inlet (suction hole) of the fan 2, and the outlet of the latter is in communication with the atmosphere. Flaps 16, 17, 18 and 19 regulate the ratio of the flow rate of gas entering the upper tangential inlet pipes and inlet pipes 11 of the dust collectors 3, 4, 5 and 6. The removal of captured dust is carried out through the dust exhaust pipes 14 with lock gates 15.

The organization of gas suction from the upper part of the hopper 8 of the first dust collector 3 increases the vacuum in it, which intensifies the processes of coarsening of finely dispersed dust particles, dropping them to the walls of the housing 7 and increases the rate of dust deposition into the hopper 8. In this case, the dust and gas stream sucked from the hopper 8 of the dust collector 3 has a relatively small concentration of dust and undergoes effective cleaning in the dust collector 5 located below, and the gas stream leaving the axial nozzle 13 of this dust collector with a reduced content dust enters through the upper tangential inlet pipe 9 of the last dust collector 6, where it is subjected to final cleaning.

Example.

The proposed dust collection system was used to capture particles of limestone rocks with an initial concentration at the entrance to the system of 14-18 g / m ³ , while the content of particles with a size of up to 15 μm reached 34%. At the system outlet, the concentration of dust particles was 0.7-1 g / m ³ , and the content of particles with a size of up to 15 μm was less than 22%.

Thus, the dust collection system has a high gas purification efficiency and provides the capture of finely dispersed particles.

Claims (2)

1. A dust collection system containing a source of gas to be purified, a fan, pipelines and two dust collectors on counter-swirling gas flows, each of which is made in the form of a cylindrical body with a conical hopper, an upper tangential inlet pipe, an inlet swirler located in the lower inlet pipe, and a dust collector a conical washer on its outer surface, with an axial outlet nozzle of purified gas and a dust outlet in which a lock gate is installed, characterized in that it is equipped with two additional vortex inertial dust collectors of a similar design and valves installed on pipelines, and the conical hopper of the first dust collector is made with an outlet for dust and gas mixture, while the source of the gas to be cleaned is connected to an inlet tangential branch pipe and an inlet swirl of the first dust collector, the axial outlet branch pipe of which is connected to the tangential the input swirl of the second dust collector, the axial output of which is connected to the input swirl rtogo dust collector, dust-gas mixture outlet pipe of the dust collector of the first conical hopper is connected to the tangential inlet port and the inlet of the dust collector of the third swirlers, axial outlet which is connected to the tangential inlet of the dust collector of the fourth, the axial outlet of the purified gas is connected to the fan inlet. 2. The dust collection system according to claim 1, characterized in that the first damper is installed on the pipeline connecting the source of gas to be cleaned with the inlet swirl of the first dust collector, and the second damper is installed on the pipeline connecting the axial outlet of the first dust collector with the inlet swirl of the second dust collector a third damper is installed on the pipeline connecting the axial outlet pipe of the second dust collector to the inlet swirl of the fourth dust collector; on the pipeline connecting the outlet pipe n legazovoy mixture of the first dust collector to the input of the third swirler dust collector installed fourth flap, and to the pipe, imparting an axial outlet of the third dust collector with a tangential inlet of the dust collector of the fourth, fifth damper installed.