CN2045670U

CN2045670U - Wet dust collector

Info

Publication number: CN2045670U
Application number: CN 89203565
Authority: CN
Inventors: 袁铁文
Original assignee: MING PRODUCTS PROCESSING FACTORY GEJIU CITY
Current assignee: MING PRODUCTS PROCESSING FACTORY GEJIU CITY
Priority date: 1989-03-22
Filing date: 1989-03-22
Publication date: 1989-10-11

Abstract

The utility model discloses a new wet dust collector, mainly comprising a settling chamber, a leaching device, a gas-water separator and a filter chamber, and the leaching device and the filter chamber are both provided with cokes with a certain granularity. The utility model collects various principles such as water film, impact and filtering as integration, and has the functions of dust collection, cooling down, adsorption and defogging. The utility model has strong adaptability to smoke dust, the dust collecting efficiency can reach 95-99%, the operation and maintenance charge is only 20-40% of the bag process or the electric precipitation, and the power consumption of processing 1000 cu m +[3] smoke gas is smaller than 240KW /h.

Description

Wet dust collector

The utility model is a kind of novel wet dust collector that is used to handle the industrial furnace flue dust.

The dust collection device of industry such as metallurgy and chemical industry is a lot, as expansion chamber, and cyclone dust collectors, bagroom and electrostatic precipitator etc.Wherein bagroom and electrostatic precipitator are widely used, and under normal circumstances, the dust-collecting efficiency of these two kinds of dust collection devices is all higher.Problem is that flue dust character is had comparatively harsh requirement, thereby bad adaptability, and secondly, structure is numerous and jumbled, and investment is big, produces and the maintenance cost height.Utilize the equipment of wet dust collection also many, as " composite type ash-laden gas dust-precipitator " (No. the 35th, utility model patent communique second volume, 1986.12.18), " novel mixed deduster " (No. the 49th, utility model patent communique second volume, 1986.12.3), " high-efficiency wet-type dust collector " (No. the 48th, utility model patent communique Volume Four, 1988.11.30) etc.These wet dust collector devices all have bulky, and efficiency of dust collection changes greatly, deficiencies such as work less stable.

The novel purpose of this reality is to propose a kind of new, and adaptability is big, high efficiency, and stable performance is made and maintenance is easy to wet dust collector to overcome the deficiency of existing dust-precipitator.

The new wet dust collector that the utility model proposed is by expansion chamber (1), leaching device (2), and moisture trap (3), filter chamber (4) and expansion chamber (5) and back pool (6) are formed (seeing accompanying drawing 1).

(1) is stopped up in the sedimentation of the preceding setting of leaching device (2) is a conventional facility, is a funnel-shaped container that utilizes the gravity effect of grit to collect, and effect is to remove thick dirt and reduce flue-gas temperature, alleviates the leaching device burden, guarantees the unlikely a large amount of vaporizations of shower water.Visual dust content of the size of expansion chamber and number and temperature just adopt several.What expansion chamber (1) was collected when the low and water content of flue-gas temperature is high is heavy slurry, can import ad hoc neutralization pond to handle, or import slurry sediment pool (5) and together handle.When the temperature height and moisture content when low, that collects is dried dirt.

Leaching device (2) is a cylindrical vessel, mainly contains grid (2a), barrel (2c), air inlet pipe (2j), escape pipe (2d), spray thrower (2e), sieve plate formations (seeing accompanying drawing 2-3) such as (2g).Mushy coke layer (2b) is housed on grid (2a), is used to capture the wetting grit of absorption,, on barrel (2c), have a square opening, obturage (exceeding) with port lid at ordinary times with air tight for the ease of regularly clearing up and stirring.Accompanying drawing 2 is depicted as a leaching device, can adopt a plurality of leaching devices series connection (but progression is unhelpful with three grades of big persons of exceeding) in actual the use, and the mode used of leaching device connection in series-parallel, form the combination leaching device of multistage multiple row, as one-level three row, three grade of three row of secondary two row etc.The granularity of coke layer (2b) is successively decreased successively by the flow of flue gas direction, and first order 60-80m/m, second level 40-60m/m, third level 10-40m/m, loading are the 1/2-5/6 of effective volume (being the cylinder volume).Water spray is generally 4-6 rice ³/ rice ²Hour, promptly the unit plane of structure long-pending on 4-6 rice per hour ³

Moisture trap (3) is the cylinder that a steel plate rolls, and can manufacture an integral body with the leaching device string, and its diameter and height were determined by air velocity and required gas-water separation time.Because its effect is the burden of the filter chamber (4) that alleviates the back, so it is an empty tube that an aeroscopic plate is arranged.

Filter chamber (4) is the facility that makes a final check of this dust-precipitator, is shaped as cylindrical shape or square (as shown in Figure 4), generally uses welded steel plate, also available brick, and materials such as armored concrete are made.It has air inlet pipe (4a), equal gas coning face (4b), and grid (4c), locular wall (4e), coke layer (4d), escape pipe (4f) constitutes.Go out on advancing under the flue gas, capture absorption micronic dust and aqueous vapor once more through coke layer, aqueous vapor is fully atomized, gas-water separation guarantees that the flue gas of eliminating has lower water content.Minimizing is to the etch of exhaust blower.The coke layer downstream direction is auxilliary successively from top to bottom to be established three layers (nothing obviously is situated between and limits, and layer and interlayer are right after and stack), shown in dotted line in the accompanying drawing 4.The pass of granularity and level is: respectively for filtering volume, promptly 1/3, the three layer of cylinder (or square body) volume is 1/6 for ground floor 200-300m/m, second layer 100-200m/m, the 3rd layer of 40-100m/m, loading ground floor, the second layer.

This wet dust collector that the utility model proposed, the film that catchments impacts, and multiple principles such as filtration have and gather dust in one, and functions such as demist are filtered in cooling.Flue gas from expansion chamber (1) to the filter chamber (4), take emptying away by exhaust blower at last, dust is through gravitational settling, water wetting, the repeatedly capture of coke layer obtains collecting effectively, dust-collecting efficiency height not only, generally can reach 95-99%, and wide to particle size range, and changing big dust has stronger adaptability.Because coke layer is pressed progression by granularity and arranged, control of dust distributes rationally, and the dirt oar is difficult for a large amount of the concentrating in certain and causes blocking, therefore, working stability needn't frequently be stirred and be cleaned and adjust, the during-operation service expense is low, the 20-40% that generally has only cloth bag or electricity to gather dust, every processing 1000 mark rice ³Below flue gas electricity consumption 240 degree,, has tangible progress so compare with existing cleaner.

Accompanying drawing 1 is the overall cloth structure schematic diagram of this dust-precipitator.1-expansion chamber wherein, 2-leaching device, 3-moisture trap, 4-filter chamber, 5-slurry sediment pool, 6-back pool.

Accompanying drawing 2-3 is respectively leaching device cutaway view and front view.Wherein: 2a-grid, 2b-coke layer, 2c-barrel, 2d-escape pipe, 2e-spray thrower, the 2f-gas collection conical surface, 2g-sieve plate, 2h-port lid, the equal gas coning face of 2i-, 2j-air inlet pipe, the heavy slurry of 2k-conduit.

Accompanying drawing 4 is filter chamber's cutaway view.Wherein:

The 4a-air inlet pipe, the equal gas coning face of 4b-, 4c-grid, 4d-coke layer, 4e-locular wall, 4f-escape pipe.

Example

The pattern that provides by the utility model, a concrete wet dust collector, its leaching device barrel bore is 800m/m, be three grade of one row series connection, the coke layer granularity is: first order 60-80m/m, second level 40-60m/m, third level 10-40m/m, charging quantities at different levels are 4/5 of effective volume, and water spray is 5.5 meters ³/ rice ²The time, the granularity of filter chamber's coke layer is followed successively by ground floor 200-300m/m, and second layer 100-200m/m, the 3rd layer of 40-100m/m, charging quantity, ground floor, the second layer are 1/3, the three layer 1/6 that filters volume.This dust-precipitator is used to handle the blast furnace flue gas, and dust content is: 300-36000mg/Nm ³, the grit granularity is 0-5m/m, smoke treatment amount 1500-3000Nm ³/ hour, dust-collecting efficiency reaches more than 98.5%.

Claims

1, a kind of new wet dust collector, by expansion chamber, leaching device, moisture trap, the filter chamber, slurry sediment pool and back pool are formed, and it is characterized in that expansion chamber, leaching device, this quaternary formula of moisture trap and filter chamber is arranged in turn, said leaching device is provided with spray thrower and coke layer, and the series connection of 1-3 level is used, and is provided with coke layer in the filter chamber.

2, as the said dust-precipitator of claim 1, the coke layer granularity that it is characterized in that leaching device is in turn: first order 60-80m/m, second level 40-60m/m, third level 10-40m/m, charging quantity is the 1/2-5/6 of effective volume, and water spray is a 4-6 rice ³/ rice ²Hour.

As the said dust-precipitator of claim 1, it is characterized in that 3, three layers of coke layer granularity of filter chamber are in turn, ground floor 200-300m/m, second layer 100-200m/m, the 3rd layer of 40-100m/m, charging quantity is a ground floor, and it is 1/6 that the second layer is 1/3, the three layer of filtering volume.