CN2437390Y

CN2437390Y - Pneumatic dust-collector

Info

Publication number: CN2437390Y
Application number: CN 00212865
Authority: CN
Inventors: 陈长庆; 李文成; 李光年
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-04
Filing date: 2000-08-04
Publication date: 2001-07-04
Anticipated expiration: 2010-08-04

Abstract

The utility model relates to a duster, particularly a pneumatic dust-collector, characterized in that both ends of a flow guiding blade 3 is connected with a flow guider 1 via connecting wires 4; the flow guiding blade 3 is positioned inside a flue casing 2, and the distance between two contiguous flow guiding blades 3 is the 1/3-1/2 of the length of the flow guiding blade. The distance between both ends of the air-stream air flow guider 1 and a flue casing 2 is from 20 to 450 mm, and the central included angle alpha between the connecting wire 4 and the air flow guider 1. The flue casing 2 can be cone-shaped, column-shaped, or rectangular. The air flow outlet end of the air flow guider 1 can be the straight-way type or the gooseneck type. The shape of the flow guide blade 3 can be elliptical, trapeziform, and semicircle.

Description

The pneumatic type deduster

The utility model relates to deduster, is specially the pneumatic type deduster.

At present; and problem ecological environmental protection energy-conservation in China becomes increasingly conspicuous; especially the smoke abatement and dust control to coal-burning boiler requires strict day by day; the current dry type machinery cyclone dust collectors that generally use; can't satisfy higher environment protection emission requirement; so, inaccurate newly-built coal-burning boiler and kiln in some big and medium-sized cities of China, the requirement of having built was transformed at nearly 2 years.

The purpose of this utility model is to provide a kind of simple in structure, with low cost, installation, maintenance, pneumatic type deduster easy for operation.

The purpose of this utility model is achieved in that at the two ends of guide-ring 3 and connects air ducting 1 by connecting line 4 respectively, guide-ring 3 is in flue housing 2 the insides, distance between two adjacent guide-rings 3 is the 1/3-1/2 of guide-ring length, the distance L of 1 liang of end distance flue of air ducting housing 2 is 20-450mm, and connecting line 4 is 0 °-20 ℃ with the angle α at air ducting 1 center.Flue housing 2 can be cone shape, cylindrical shape or rectangular shape, and air ducting 1 air-flow outflow end can be through type or gooseneck type.The shape of guide-ring 3 can be oval, trapezoidal, semi-circular shape.

Advantage of the present utility model is: simple in structure, with low cost, installation, maintenance, easy for operation, technical indicator all is better than cyclone dust collectors.Floor space is little, and is in light weight.

Fig. 1 (a) is the utility model air ducting cone shape structural principle schematic diagram.

Fig. 1 (b) is the utility model air ducting cylindrical shape structural principle schematic diagram.

Fig. 2 is the utility model I structure for amplifying principle schematic.

Fig. 3 (a) is the utility model guide-ring circular configuration principle schematic.

Fig. 3 (b) is the utility model guide-ring trapezium structure principle schematic.

Fig. 3 (c) is the utility model guide-ring semicircular structure principle schematic.

Below in conjunction with accompanying drawing in detail the utility model most preferred embodiment is described in detail: the two ends at guide-ring 3 connect air ducting 1 by connecting line 4 respectively, guide-ring 3 is in flue housing 2 the insides, distance between two adjacent guide-rings 3 is the 1/3-1/2 of guide-ring length, the distance L of 1 liang of end distance flue of air ducting housing 2 is 20-450mm, and connecting line 4 is 0 °-20 ℃ with the angle α at air ducting 1 center.Flue housing 2 can be cone shape, cylindrical shape or rectangular shape, and air ducting 1 air-flow outflow end can be through type or gooseneck type.The shape of guide-ring 3 can be oval, trapezoidal, semi-circular shape.A-flows to for the dust-contained airflow import, and B-is the concentrated gas flow path direction, and C-is the purifying gas flow direction.When ash-laden gas by A to entering deduster, when air-flow passes air ducting 1, air-flow is divided into the multiply air-flow along multilevel deflector leaf grating 3 inter-stage slits, per share air-flow is being walked around when C direction guide-ring 3 passes intersegmental slit, concentrating the air-flow streamline swerves purifying gas flow and flows into concentrated air-flow in outside flue housing 2 chambers, advance along the B direction, the lower end of flowing out deduster air ducting 1 then enters second level deduster and further purifies, perhaps from deduster, discharge, directly flow to air-introduced machine along the C direction and enter chimney through smoke discharging pipe.Removed the purification of most dust in the flue gas, air-flow accounts for more than 95% of total smoke treatment amount, walk around the moment of guide-ring 3 flip-flop flow directions at per share air-flow, has the certain mass grit under the effect of pneumatic inertia power in the air-flow, try hard to keep original grain direction motion, thereby make grit from the air-flow that detours, be subjected to action of centrifugal force and separate.The grit that is separated is all had an opportunity and next stage guide-ring 3 surfaces bump when skimming over the inter-stage slit, and rebound again the grit after the collision concentrated air-flow relaying in the air ducting 1 is continuous to flow to original direction by north.Be intercepted at air ducting 1 and contain a large amount of dust and treat the concentrated air-flow further handled, not 5% of Football Association's smoke treatment amount.This part air communication is crossed injection and is arrived along burning once more in the B direction boiler furnace, recovery section energy.Because in flue dust, contain unburnt carbon black (black smoke) and flying dust (containing unburnt coke particulate) in the burner hearth, will concentrate air-flow and be ejected into burning once more in the burner hearth.Not only can the recovery section energy, can also cancel the gather dust secondary pollution of technology of deduster ash dropping hopper and ash disposal system, elimination, reached the purpose of efficiently smoke dedusting.The utility model dedusting technology parameter is as follows: smoke treatment amount m ³/ h=3000-390000, inlet dust concentration g/m ³=0.01-1000, inlet dust granularity um=1-1000, cut diameter um=1-3, concentration of emission mg/Nm ³＜100, efficiency of dust collection %=96-98, lingemann blackness (level)=0, pressure drop Pa=1000-1400, ash dropping hopper, the dust pelletizing system=maximum 350Kg of no deduster weight (Kg) are arranged, mounting means is any-mode, vertical, level or inclination mode.

Claims

1, a kind of pneumatic type deduster, it is to be made of air ducting 1, flue housing 2, guide-ring 3, it is characterized in that: the two ends at guide-ring 3 connect air ducting 1 by connecting line 4 respectively, guide-ring 3 is in flue housing 2 the insides, distance between two adjacent guide-rings 3 is the 1/3-1/2 of guide-ring length, the distance L of 1 liang of end distance flue of air ducting housing 2 is 20-450mm, and connecting line 4 is 0 °-20 ℃ with the angle α at air ducting 1 center.

2, a kind of pneumatic type deduster according to claim 1, it is characterized in that: flue housing 2 can be cone shape, cylindrical shape or rectangular shape, air ducting 1 air-flow outflow end can be through type or gooseneck type.

3, a kind of pneumatic type deduster according to claim 1, it is characterized in that: the shape of guide-ring 3 can be oval, trapezoidal, semi-circular shape.