CN2306063Y - Filtering bag duster for small coal boiler - Google Patents

Abstract

The utility model relates to a filtering bag duster for a small coal boiler. A smoke settling cooling chamber is added on one side of a smoke inlet in the body of the duster. In order to enhance the cooling effect, a heat-pipe radiator can be arranged on the outer wall of the settling cooling chamber. The utility model has the advantages of simple structure, and long service life, and can process the fume whose temperature is above 300DEG. C, the dedusting efficiency reaches more than 99.9%, and the dust concentration can be reduced below 30 mg/nm [3].

Description

A kind of small scall coal-fired boiler bag dust collector

The utility model relates to a kind of bag dust collector, particularly a kind of bag dust collector that is used for the small scall coal-fired boiler use.

Small scall coal-fired boiler is meant that constituent parts is used to drink water, the hand-fired boiler of bathing, heating and production.This class boiler One's name is legion, simple in structure, burning condition is poor, operant level is low, and the flue dust that the boiler smoke concentration more than 95% produces is tiny, phosphorus content height, intractability height.Present solution, the one, on boiler body, try every possible means, as improving combustion system etc.; Another kind is to add deduster behind stove.The improvement of boiler body only is applicable to the boiler of new production, and is powerless to existing operation boiler.Behind stove, add deduster, dedusters such as existing single bispin wind, multitube, water-bath, moisture film all can not satisfy the improvement requirement, electric cleaner efficient height, but investment is too big, and poor for applicability to the flue dust that different coal burnings produce, be installed on the small-sized burning boiler less economical.Filter bag class deduster efficiency of dust collection height, but because flue gas directly enters filter bag, it is heavy that filter bag is handled load, and high-temperature flue gas directly acts on filter bag, and is serious to the filter bag infringement, shortened the life-span of filter bag.

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of efficiency of dust collection height, resistant to elevated temperatures bag dust collector.

The technical solution of the utility model is achieved in that in deduster body interior smoke inlet one side, increases by a flue dust sedimentation cooling chamber.In sedimentation cooling chamber, the bulky grain dust of carrying secretly in the flue gas is deposited in the expansion chamber bottom under gravity and action of inertia, and the temperature of flue gas is reduced simultaneously.Through the flue gas of sedimentation dedusting and cooling, dust content reduces, and temperature reduces, and flue gas enters filter bag again, has reduced the load of filter bag.Simultaneously, flue-gas temperature is low, and the damage of filter bag when having reduced has prolonged service life of filter bag.

The utility model is simple in structure, and the equipment life cycle is long, can handle the cigarette temperature and reach flue gas more than 300 ℃.The efficiency of dust collection height, after testing, efficiency of dust collection reaches more than 99.9%, flue dust dust content after deduster is handled can drop to 30mg/Nm ³Below.

The utility model is further described during below in conjunction with drawings and Examples.

Accompanying drawing 1 is a structural representation of the present utility model.

With reference to accompanying drawing, the deduster body is installed on the support 11, the deduster shell upper has smoke inlet 1 and exhanst gas outlet 6, in smoke inlet 1 inboard flue dust sedimentation cooling chamber 2 is arranged, the bottom of sedimentation cooling chamber 2 is the inlets 3 that fall ash mouth 4 and main separation chamber 8,8 bottoms, main separation chamber are ash bucket 10, the bottom of ash bucket 10 is ash mouths 12, separate by card 9 between main separation chamber 8 and the ash bucket 10, the top of filter bag 7 ash bucket 10 in main separation chamber 8, be suspended on the vibrator 5, vibrator 5 is at dust remover roof, ash bucket 10 is inverted pyramid shape in whole deduster bottom, and flue dust collecting is regularly discharged from ash mouth 12 by manual ash-leaking valve in ash bucket 10.After the flue gas process sedimentation cooling chamber 2, the bulky grain flue dust is deposited in sedimentation cooling chamber 2 bottoms under gravity and effect of inertia, and flue gas enters every filter bag 7 through lower face plate 9.Flue gas is after filter bag 7 filters, and the flue gas of purification is drawn by air-introduced machine via gas outlet 6, and flue dust is then stayed filter bag 7 inwalls.Vibrator 5 is rapping filter bag 7 regularly, makes the laying dust of filter bag 7 inwalls fall into ash bucket 10.

For increasing the effect of flue gas cool-down, can on sedimentation cooling chamber 2 outer walls, heat-pipe radiator 13 be housed.

Claims (3)

1. small scall coal-fired boiler bag dust collector, it is characterized in that: the deduster shell upper has smoke inlet (1) and exhanst gas outlet (6), in smoke inlet (1) inboard flue dust sedimentation cooling chamber (2) is arranged, the bottom of sedimentation cooling chamber (2) is the inlet (3) that falls ash mouthful (4) and main separation chamber (8), bottom, main separation chamber (8) is ash bucket (10), the bottom of ash bucket (10) is ash mouthful (12), separate by card (9) between main separation chamber (8) and the ash bucket (10), the top of filter bag (7) ash bucket (10) in main separation chamber (8) is suspended on the vibrator (5), vibrator (5) is at dust remover roof.

2. deduster according to claim 1 is characterized in that: on sedimentation cooling chamber (2) outer wall heat-pipe radiator (13) is housed.

3. deduster according to claim 1 and 2 is characterized in that: the deduster body is installed on the support (11).

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