CN2042374U

CN2042374U - Filter for granular with auto-moving bed

Info

Publication number: CN2042374U
Application number: CN 89200977
Authority: CN
Inventors: 王振声
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-01-27
Filing date: 1989-01-27
Publication date: 1989-08-09

Abstract

The utility model discloses a filter for granules with an auto-moving bed, belonging to the technical field of dusty gas processing equipment. The filter utilizes solid material as filtering medium for purifying dusty gas. The filter for granules with an auto-moving bed is composed of a granular bed, a system for generating, controlling and conveying compressed air and the equipment for separating and purifying dusty granules. Every filtering unit has certain filter area, and a plurality of units can be superposed according to processed input air. The filter has simple structure, uniform wind speed and wide range, particularly high-temperature flue gas can be directly purified, and thus advantages are provided for waste heat utilization and cooling equipment.

Description

Filter for granular with auto-moving bed

The utility model belongs to dusty gas treatment facility technical field, is particularly useful for treatment temperature height, strong, the treating capacity variation various dusty gases greatly of corrosivity.

At present, a kind of dust remover with boiling-particle layer of domestic Institute of Safety Technology, Ministry of Metallurgical Induatry development, as shown in Figure 1.Dusty gas is entered by import ［ 1 ］, the sedimentation in expansion chamber ［ 3 ］ of big grit, and little dirt particle purifies through filter chamber ［ 2 ］, enters atmosphere from exhaust outlet ［ 9 ］.When just resistance is big when the stratum granulosum dust containing capacity is big, open cylinder valve ［ 10 ］, blowback wind is blown into from blowing mouth ［ 8 ］, the blowback air-flow enters stratum granulosum through orifice plate ［ 4 ］ from bottom to top, makes the uniform particles boiling, reaches the effect of deashing.The big grit that blows out through cohesion is deposited in the ash bucket ［ 6 ］, is regularly discharged by ash discharging hole ［ 7 ］.The stratum granulosum bottom is to be washed into orifice plate ［ 4 ］ by steel plate, plays the filtrate effect of supporting.Plate washer ［ 5 ］ is to run out of when preventing the filtrate blowback.This deduster is 4 layers of (4M ²) one group, two groups of A and B are with dividing plate ［ 11 ］ separately.Interlayer is divided into 625mm.Blowback wind is made up of aerostatic press, surge tank, cylinder, gate and electric controller.This deduster batch production, resistance is big, and volume is big, the cost height, by cylinder controlled filter and blowback, its moving component complexity, maintenance capacity is big.

Abroad, U.S. Sguives is the vertical gravel bed filter of representative development with Zenz, and particle constitutes the vertically passing filtering layer by stacked screen and the screen cloth clamping of two fans, and deashing adopts periodic replacement stratum granulosum or pulse jet to replace rake.But change stratum granulosum and make the assembling complexity, do not see report as yet in industrial use.Also there is the complexity of clear dirt and transmission mechanism in the GFE type band rake whirlwind gravel bed filter of West Germany development.

The purpose of this utility model is intended to solve above-mentioned difficult point, proposes the automatic moving bed filter of particle, and it moves the particle circulation, brings in constant renewal in the particle surface of filtering usefulness, can be continuously produced, and boosts productivity.Use separator, cyclone separator and wet dust collector to make particle and dust separation.Overall process does not have drive disk assembly.

Primary structure of the present utility model is made up of grain bed, particle automatic circulating system, separation and cleaner.Particle is slowly to move down on two grain beds that are made of 4 fan shutters, after dusty gas enters cavity, enters grain bed by inboard two fan shutters, leaches purified gas from two outside shutters.When the particle that moves moves on to the U type pipeline of feed opening bottom, utilize Ga Te Si (Gottys) strength Conveying Theory, with Compressed Gas pipeline endoparticle thing bolt is pressed into high-order separator, separated particle is flow in the grain bed by the bottom inclined tube, isolated dirt and gas, through cyclone separator, the recyclable dirt in bottom, micronic dust that top is not separated and gas will be purified through wet dust collector again.

Advantage of the present utility model: changing batch production is serialization production, enhances productivity, simple in structure, does not have drive disk assembly, and reliable operation does not produce secondary pollution; The tolerance that consumes is than boiling grain bed lower (air consumption is about 20 cubic metres/hour).This equipment has that volume is little, cost is low, and is easy to utilize.

Description of drawings:

Accompanying drawing 1 is the dust remover with boiling-particle layer structural representation;

Accompanying drawing 2 is the automatic moving bed filter structural representation of a kind of particle.

To further describe structure of the present utility model below in conjunction with accompanying drawing.

Dusty gas enters cavity ［ 30 ］ by air inlet ［ 29 ］, and gas and changing direction and underspeeding in cavity makes big grit be deposited in cavity bottom, is discharged by cleaning door ［ 32 ］.Dusty gas blows to both sides shutter ［ 31 ］ in cavity, be purified by stratum granulosum and two outside shutters time, and purified gas is collected by shell ［ 28 ］ and entered chimney by exhaust outlet ［ 27 ］, reaches national gas discharge standard.The particle of grain bed the inside is entered bed by charging aperture ［ 25 ］, because of particle has nature stocking angle and shutter certain angle is arranged, and particle can not be blown away, and shutter plays screen and the screen cloth effect that does not have power-assisted.Because the gravity effect of bed endoparticle thing, and slowly move down.When particle moves on to the bottom of carrier pipe ［ 36 ］, air knife ［ 37 ］ is opened, Compressed Gas upwards is sent to separation chamber ［ 23 ］ with the granules in pipe thing, particle bumps against the bottom that turns back to the separation chamber behind the top board again, and get back to again in the material bed by tremie pipe ［ 24 ］, so constantly circulate, reach the purpose of continuous processing dusty gas.For the dust-laden particle in the carrier pipe ［ 36 ］ is carried continuously, before the conveying pipeline corner, install air knife ［ 37 ］.Air knife is actual to be an askew intubate, and links with magnetic valve ［ 38 ］, by the keying of impulse generator ［ 39 ］ control magnetic valve.When opens solenoid valve, the compressed gas by compressor ［ 41 ］ produces by calm the anger jar ［ 40 ］, is sent to the separation chamber with the dust-laden particle and separates.When closed electromagnetic valve, the dust-laden particle moves down again owing to the gravity effect.Because the air knife air inlet controls by impulse generator, therefore, the air inlet of air knife and stop constantly to open and close by pre-designed time-program(me) reaches the purpose of continuous automatic transport.The dusty gas that discharge ［ 23 ］ from the separation chamber, through cyclone separator ［ 21 ］ dedusting, big dust is drained to dead lock ［ 34 ］ commonly used by tremie pipe ［ 33 ］, not removed particulate and gas, pass through blast pipe ［ 22 ］ in wet dust collector ［ 35 ］ commonly used from central tube, further purification thereby gas is got back.Only be a cell filter in the accompanying drawing 2, area is 4 square metres, takes up an area of to be 0.45M * 1M.Can plurality of units be formed by stacking according to the requirement of handling.

Claims

1, the automatic moving bed filter of a kind of particle is characterized in that described filter is made up of the automatic moving bed of particle, separator, cyclone dust collectors, wet dust collector, magnetic valve, impulse generator and compressor.

2, filter according to claim 1 is characterized in that the automatic moving bed of described particle is made up of 4 shutters ［ 31 ］ folded two grain beds and a cavity ［ 30 ］.