CN2073088U

CN2073088U - Shutter type water membrane dust remover

Info

Publication number: CN2073088U
Application number: CN 90212900
Authority: CN
Inventors: 王荣根
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-05-26
Filing date: 1990-05-26
Publication date: 1991-03-13

Abstract

The utility model relates to a shutter-typed water membrane dust remover for eliminating smoke and removing dust in industrial boilers, wherein, a middle partition wall divides the dust remover into a dust collecting chamber and a separating and settling chamber; a plurality of shutter plates are arranged in the dust collecting chamber which adopts a zigzag overflow water-sealed type water supply apparatus. The utility model combines the advantages of shutter-typed dust removing, water film dust removing and gravity settling dust removing. The utility model has the advantages of reasonable design, simple structure, small system resistance, convenient and reliable operation, etc. The efficiency of dust removing is up to 95%. The utility model is widely used in various industrial boilers, particularly various industrial boilers which are below 10 t/h.

Description

Shutter type water membrane dust remover

The utility model relates to a kind of venetian blind type water dust scrubber, belongs to dust arrester.

The device for eliminating smoke and dust of existing Industrial Boiler generally has three kinds of shutter deduster, gravity impingement dust collector and cyclone dust collectors, and traditional shutter deduster adopts dry method, airflow direction from bottom to top generally is used for fly-ash reburning device in the boiler, and efficiency of dust collection has only about 40-50%; Traditional gravity impingement dust collector dedusting resistance is big, and efficiency of dust collection is low, and general efficiency of dust collection is about 70-80%; Dry method cyclone dust collectors efficiency of dust collection is low, can't reach dust emission standard, so general only use on the following chain-grate boiler in the lower area of emission request and 2 tons/time.Also have a kind of water dust scrubber, though its efficiency of dust collection can reach more than 90%, main tube, secondary tube cylindrical shell are very high, the system pipes line length, and elbow is many, and resistance is big, and structural requirement height, equipment total cost are also very high.

The purpose of this utility model provides a kind of simple in structure, and is cheap, the efficiency of dust collection height, and SR is little, can generally adapt to efficient, the low consumption novel deduster of various Industrial Boilers.

The utility model integrated application existing shutter deduster, water dust scrubber, the dedusting advantage of gravity impingement dust collector is the principle of utilizing inertial collision and intercepting and capturing equally, mainly realizes the purpose of this utility model by a venetian blind type water film dedusting chamber and separate and subside chamber.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a structure cutaway view of the present utility model;

Fig. 2 is the plan structure (removing top board 3) of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 2.

Among the figure, 1-feed trough, 2-hand-hole, 3-deduster top board, 4-housing skin, 5-housing intermediate layer, 6-housing internal layer, 7-V shape baffle plate, 8-midfeather, the 9-smoke outlet tube, 10-partition wall strutbeam, 11-housing strutbeam, the 12-flashboard, 13-water seal tank, 14-overfall, the 15-bed course, 16-feed pipe, 17-gas approach overflow water seal gusset, 18-gas approach zigzag downflow weir, the 19-flue gas inlet tube, 20-shutter board moisture film uniform device, 21-shutter board, 22-partition wall passage lintel, 23-partition wall passway, the standby cleaning hose of 24-, 25-partition wall pillar, 26-shutter board overflow water seal gusset, 27-shutter board zigzag downflow weir, I-shutter water film dedusting chamber, II-separate and subside chamber.

With reference to accompanying drawing, the utility model mainly is made up of the shutter water film dedusting chamber (I) that is positioned at shell of dust remover, separate and subside chamber (II) and waterworks (1), (16), (17), (18), (26), (27), overflow-type drain water seal pond (13), shell of dust remover (3), (4), (5), (16) etc., dirt pocket (I) is separated by midfeather (8) with separate and subside chamber (II), also is provided with flue gas inlet tube (19) and outlet (9) on shell of dust remover. Wherein, the interior both sides of dirt pocket (I) are provided with some shutter boards (21) from top to bottom successively, and every shutter board becomes with horizontal plane less than 90 ° of angles, forms a step, see Fig. 3 (the side shutter board that only draws among the figure, opposite side is symmetrical structure); Waterworks are positioned at dirt pocket (I) top, it mainly comprises feed trough (1) and feed pipe (16), in feed trough, locate to be provided with gas approach overflow water seal gusset (17) and gas approach zigzag downflow weir (18) corresponding to flue gas inlet tube (19), the former mainly plays and prevents that import department's flue gas from escaping effect, and the latter plays the overflow effect. In like manner, also be provided with shutter board overflow water seal gusset (26) and shutter board zigzag downflow weir (27) (see figure 3) corresponding to dirt pocket (I) both sides shutter boards (21) position in the tank, deduster top board (3) is upper locates to have water stream channel corresponding to downflow weir (18), (27), in order to trough inner water stream is descended from the downflow weir overflow. The effect of separate and subside chamber (II) is Flue gas is further carried out water smoke to be separated and gravitational settling, offer respectively partition wall passway (23) in midfeather (8) both sides, bottom corresponding to both sides shutter board (21), that is dirt pocket (I) communicates by partition wall passway (23) with separate and subside chamber (II). After ash-laden gas enters dirt pocket (I) from the flue gas inlet tube (19) on deduster top, the porch with from (18) overflow of zigzag downflow weir and under moisture film contact, form a large amount of water smoke, thicker soot particle and water smoke rush at midfeather in the deduster (8) wall with air-flow, and the water seal tank (13) of the inflow deduster bottom that goes downstream; The flue gas that contains tiny soot particle and mist then racing and under rush at shutter board (21), strike on the interior inclined-plane of both sides shutter board (21), wherein most of soot particle is clung by the moisture film that is gone downstream on shutter board (21) by both sides shutter board zigzag downflow weirs (27) and uniform device (20), flow into water seal tank (13) with water, the soot particle that small part is concentrated and water smoke, because of gravity and effect of inertia, directly pour water seal tank (13) and absorbed by water. Shutter board moisture film uniform device (20) is positioned on first shutter board, is a narrow shape gusset, plays dispersing water flow and acts on uniformly. Flue gas after being cleaned then changes direction and is flowed out by the shutter board slit, enter separate and subside chamber (II) by the partition wall passway (23) on the midfeather (8) respectively, further separate and subside, remove mist after, flow out deduster from smoke outlet tube (9) again via V-arrangement baffle plate (7). V-arrangement baffle plate (7) plays a part prolong smoke here and flows through the path to increase its time of staying in separate and subside chamber (II). Being positioned on top, deduster separate and subside chamber (II) such as smoke outlet tube (9) then can be without V-arrangement baffle plate (7). Be provided with two place's overfalls (14) in the water seal tank (13), and adopt flashboard (12) to control water seal height, realize the Automatic continuous discharging.

In addition, the deduster inner bottom part is preferably formed as the gradient, preventing dust deposition, and at housing cleaning hose for subsequent use (24) is housed, so that flushing is inner in case of necessity.

The utility model integrated application the shutter dedusting, water film dedusting, gravity impact the principle of dedusting, efficiency of dust collection is up to more than 95%, it is reasonable in design, and is simple in structure, SR is little, Easy and simple to handle, simultaneously reliable, generally suitable each in Industrial Boiler, especially 10 tons/time following various Industrial Boilers smoke abatement and dust control, be a kind of practical efficient, low consumption duster for industrial boiler.

Embodiment: embodiment as shown in drawings, deduster housing skin (4) adopts common brick with internal layer (6), and housing intermediate layer (5) and top board (3) adopt reinforced concrete structure, and shutter board (21) adopts pine, and every side has eight shutter boards.Through deduster import and export flue gas is detected, the efficiency of dust collection of different coals is respectively: bituminous coal is 96%, and anthracite is 96.1%, and mixing coal is 97%, and deduster outlet flue gas lingemann blackness is 1.0 grades, meets discharging standards.

Claims

1, a kind of venetian blind type water dust scrubber that is used for Industrial Boiler smoke abatement and dust control, comprise deduster housing and feedwater, drainage arrangement, the deduster housing is provided with gas approach and outlet, it is characterized in that by midfeather (8) deduster being divided into dirt pocket (I) and separate and subside chamber (II) in the deduster, having partition wall passway (23) on the midfeather (8) communicates two Room, the interior both sides of dirt pocket (I) are provided with some shutter boards (21) from top to bottom, and every shutter board becomes the angle less than 90 ° with horizontal plane; Waterworks comprise feed trough (1) and the feed pipe (16) that is positioned at dirt pocket (I) top, be respectively equipped with gas approach overflow water seal gusset (17) corresponding to flue gas inlet tube (19) and both sides shutter board (21) position in the tank, gas approach zigzag downflow weir (18) and shutter board overflow water seal gusset (26), shutter board zigzag downflow weir (27).

2, deduster according to claim 1 is characterized in that being provided with in the separate and subside chamber (II) V-arrangement baffle plate (7).

3, deduster according to claim 1 is characterized in that the deduster inner bottom part forms a gradient, and is provided with standby cleaning hose (24) on housing.

4, deduster according to claim 1 is characterized in that first shutter board (21) is provided with shutter board moisture film uniform device (20).

5,, it is characterized in that controlling water seal height by flashboard (12) in the deduster bottom water seal tank (13) according to the described deduster of claim 1 to 4.