CN110813002A

CN110813002A - Venturi cyclone dust collector

Info

Publication number: CN110813002A
Application number: CN201911113012.4A
Authority: CN
Inventors: 龚佰勋; 陈洪一; 黎莉; 邓旺明; 黄嘉伟; 肖磊
Original assignee: Shenzhen Longcheng High Tech Environmental Protection Co Ltd
Current assignee: Shenzhen Longcheng High Tech Environmental Protection Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-02-21

Abstract

The invention discloses a Venturi cyclone dust collector which comprises an air inlet, a Venturi tube, a spraying system, an outer cylinder, a cyclone dust collector, an air collecting tank, a blow-off pipe, a self-sucking pump and an induced draft fan. The method is characterized in that: waste gas enters from the venturi tube, is mixed with slurry liquid and enters the outer barrel, part of heavy substances in the waste gas falls into a slurry pool at the bottom of the barrel under the action of natural sedimentation, the waste gas rises to enter a cyclone dust collector to separate dust and liquid drops, the purified gas is collected and discharged, and impurities enter the slurry pool at the bottom of the barrel to finish the purification process. The invention combines the principles of the venturi, the settling chamber and the cyclone dust collector, has the advantages of good dust removal effect, compact structure and the like, and also has a certain removing effect on acid-base gas, tar and the like.

Description

Venturi cyclone dust collector

Technical Field

The invention relates to the technical field of gas dust removal, in particular to a Venturi cyclone dust collector.

Background

The venturi cyclone dust collector belongs to the category of venturi scrubber, and combines venturi tube and cyclone dust collector to work. The venturi is a high-efficiency wet scrubber, and is commonly used for cooling and dedusting high-temperature flue gas, after dust-containing gas enters a contraction pipe, the flow velocity is gradually increased, the pressure energy of the gas flow is gradually converted into kinetic energy, the gas velocity reaches the maximum value at the inlet of a throat pipe, liquid is sprayed into the throat pipe through a nozzle, liquid drops are atomized and accelerated by high-speed gas flow, and in the accelerating process, due to inertial collision between the liquid drops and gas particles, the spreading and collecting of fine particles are realized. The gas from the venturi usually contains more water mist and then passes through a dehydration device. The cyclone dust collector has the functions of dust removal and dehydration due to the action of centrifugal force, and can be used for gas dust removal and dehydration after the venturi tube.

The venturi cyclone dust collector has fewer combination forms of the venturi tube and the cyclone dust collector, and is usually connected with the cyclone dust collector directly after the venturi tube, and the indirect connection forms are fewer. The venturi tube of the venturi cyclone dust collector and the cyclone dust collector are indirectly connected.

Disclosure of Invention

The invention provides a Venturi cyclone dust collector, which effectively improves the dust removal efficiency by combining a Venturi tube, a settling chamber and the cyclone dust collector.

The invention relates to a Venturi cyclone dust collector which mainly comprises an air inlet, a Venturi tube, a spraying system, an outer cylinder, a cyclone dust collector, an air collecting tank, a blow-off pipe, a self-priming pump and an induced draft fan. Waste gas enters from the venturi tube, is mixed with slurry liquid and enters the outer barrel, part of heavy substances in the waste gas falls into a slurry pool at the bottom of the barrel under the action of natural sedimentation, the waste gas rises to enter a cyclone dust collector to separate dust and liquid drops, the purified gas is collected and discharged, and impurities enter the slurry pool at the bottom of the barrel to finish the purification process.

Further, the venturi is vertically arranged, and the outlet of the venturi is connected with the outer cylinder.

Further, the spraying system provides slurry liquid for the venturi, controls and monitors the amount of the slurry liquid, and maintains stability.

Further, outer barrel is cylindrical structure, and outer barrel bottom is equipped with the thick liquids pond. .

Further, the cyclone dust collector is arranged inside the outer barrel, the number of the cyclone dust collectors is set as required, a gas collecting box is arranged at a gas outlet of the cyclone dust collector, purified gas is collected, and a blow-off pipe is arranged at the bottom of the cyclone dust collector and used for discharging separated impurities.

Further, the self-priming pump is used for pumping slurry liquid into the venturi tube to be mixed with gas.

Further, the induced draft fan is arranged on the air outlet pipeline.

The invention has the following effects: the principle of combining venturi tube, settling chamber, cyclone dust remover three has advantages such as dust removal effect is good, compact structure, also has certain removal effect to acid-base gas, tar oil etc..

Drawings

Fig. 1 is a schematic structural diagram-a front view of a venturi cyclone dust collector of the present invention.

FIG. 2 is a schematic structural view-a front view of a split end face view of a venturi cyclone dust collector of the present invention.

FIG. 3 is a schematic structural diagram-top view of a venturi cyclone dust collector of the present invention.

Detailed Description

The technical solution in an embodiment of the present invention will be described below with reference to the drawings in the embodiment of the present invention.

As shown in fig. 1, 2 and 3, the venturi cyclone dust collector provided in this embodiment includes an air inlet 1, a venturi 3, a spraying system, an outer cylinder 7, a cyclone dust collector 13, a gas header 14, a sewage discharge pipe 12, a self-priming pump 6 and an induced draft fan, wherein exhaust gas passes through the air inlet 1, the venturi 3, the outer cylinder 7, the cyclone dust collector 13, the gas header 14 and an air outlet 2 in sequence, after the exhaust gas and slurry liquid are mixed in the venturi 3, the collected dust and liquid flow to a slurry pool 11 in the outer cylinder 7 together, meanwhile, partial heavy substances in the waste gas fall into the slurry tank 11 through natural sedimentation, the waste gas rises to enter the cyclone dust collector 13 for further treatment, the gas purified by the cyclone dust collector 13 is collected in the gas collection box 14 and is discharged through the gas outlet 2, and the dust and liquid drops separated by the cyclone dust collector 13 are discharged to the slurry tank 11 through the drain outlet 10 at the lower end of the drain pipe 12.

The venturi 3 is vertically arranged, the venturi outlet 4 is connected with the outer barrel 7, the nozzle 9 is arranged in the center of the contraction section of the venturi 3, slurry is pumped into the venturi 3 through the self-priming pump 6 after coming out of the slurry outlet 5 and is sprayed out of the nozzle 9, and the slurry spraying direction is consistent with the gas flowing direction.

The top of the outer cylinder 7 is provided with a gas outlet 2, the gas outlet 2 is connected with a draught fan, 3 cyclone dust collectors 13 are arranged in the outer cylinder 7, the cyclone dust collectors 13 are uniformly distributed around a circle, a gas collecting box 14 is arranged at the gas outlet of the cyclone dust collectors 13, the gas collecting box 14 is connected with the gas outlet 2, and gas purified by the cyclone dust collectors 13 is discharged from the gas collecting box 14 and the gas outlet 2 in sequence. The cyclone dust collector 13 is welded and fixed on the inner wall of the outer cylinder 7 through a steel bar 15. The dust outlet of the cyclone dust collector 13 is connected with a sewage discharge pipe 12, the sewage discharge pipe 12 extends to the bottom of the outer barrel 7, the bottom of the sewage discharge pipe 12 is provided with a hole for sewage discharge, and the hole is positioned below the liquid level.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a venturi cyclone, mainly comprises air inlet, venturi tube, spraying system, outer barrel, cyclone, gas collection case, blow off pipe, self priming pump, draught fan, its characterized in that: waste gas enters from the venturi tube, is mixed with slurry liquid and enters the outer barrel, part of heavy substances in the waste gas falls into a slurry pool at the bottom of the barrel under the action of natural sedimentation, the waste gas rises to enter a cyclone dust collector to separate dust and liquid drops, the purified gas is collected and discharged, and impurities enter the slurry pool at the bottom of the barrel to finish the purification process.

2. The venturi cyclone of claim 1, wherein: the venturi is vertically arranged, and the outlet of the venturi is connected with the outer cylinder.

3. The venturi cyclone of claim 1, wherein: the spraying system provides slurry liquid for the venturi tube, controls and monitors the amount of the slurry liquid and maintains stability.

4. The venturi cyclone of claim 1, wherein: the outer cylinder body is cylindrical, and a slurry tank is arranged at the bottom of the outer cylinder body.

5. The venturi cyclone of claim 1, wherein: the cyclone dust collector is arranged in the outer cylinder, and the number of the cyclone dust collectors is set according to requirements.

6. The venturi cyclone of claim 1, wherein: and a gas collecting box is arranged at a gas outlet of the cyclone dust collector and used for collecting the purified gas.

7. The venturi cyclone of claim 1, wherein: the bottom of the cyclone dust collector is provided with a blow-off pipe for discharging separated impurities.

8. The venturi cyclone of claim 1, wherein: the self-priming pump is used for pumping the slurry pool into the venturi and mixing with the gas.

9. The venturi cyclone of claim 1, wherein: the induced draft fan sets up on the gas outlet pipeline.