CN2363778Y

CN2363778Y - Dry and wet desulfurizing dust-collecting flue gas purifying apparatus for coal boiler

Info

Publication number: CN2363778Y
Application number: CN 98229939
Authority: CN
Inventors: 李晓霜
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-18
Filing date: 1998-11-18
Publication date: 2000-02-16
Anticipated expiration: 2008-11-18

Abstract

The utility model relates to a dry and wet desulfurizing dust-collecting flue gas purifying apparatus for a coal boiler, which belongs to a desulfurizing dust-collecting apparatus for a boiler. A filter screen groove (2), a stirrer (3) and a filter screen box (4) are arranged in a filter tank (1), wherein, the filter screen box is connected with a pipeline pump (6) through a suction tube (5); the pipeline pump is connected with a shower head (8) through a rubber pipe (7) and is communicated with a first collecting mixing section (18), a second mixing buffer section) (19) and a third separate settling section (21), wherein, the first collecting mixing section is communicated with a main flue (25); a nozzle (17) which is communicated with a containing bottle (12) is arranged on the main flue. The utility model can purify flue gas containing sulfur and dust through a wet mode and a dry mode; thereby, secondary pollution can not be generated, and the effects on desulfurizing and dist-collecting are good; the utility model is suitable for a big, a middle and a small boilers.

Description

Coal-burning boiler dry method, wet method sulphur removing and dust removing smoke eliminator

The utility model relates to coal-burning boiler desulfurization, dedusting, smoke eliminator, particularly a kind of coal-burning boiler dry method, wet method sulphur removing and dust removing smoke eliminator.

Desulfurization in the prior art, dedusting, gas cleaning facility operations are numerous and diverse, and volume is doted on greatly, can produce secondary pollution, and very big to the plant equipment extent of corrosion, effect is bad, the cost height.The unsuitable again general coal-burning boiler of advanced purifier uses.

The purpose of this utility model is: a kind of general large, medium and small type coal-burning boiler dry method, wet method sulphur removing and dust removing smoke eliminator are provided, it is by the compound connection of two trumpet-shaped casings of scaling type, form one cushion, compile, mixed reactor, to entering sulfur-bearing ash-laden gas in this device by dry method, wet method or only purify hybrid reaction, reach the purpose of desulfurization, dedusting, gas cleaning with wet method.

Formation of the present utility model: by filtering ponds, mixer, suction tube, tubing pump, rubber plastic pipe, spray head, collecting bottle, compile mixer (), mix breeze way (two), separate and subside section (three), hermatic door and flue collector are formed, filter screen groove (2) is arranged in the filtering ponds (1), mixer (3) and filter screen case (4), suction tube (5) inserts in the filter screen case (4) and with tubing pump (6) and is connected, tubing pump (6) is connected with two spray heads (8) by rubber plastic pipe (7), spray head (8) is communicated with compiling mixer () (18) and mix breeze way (two) (19) inner chamber by hermatic door (11), compile mixer () and mix breeze way (two) and the compound connection of separate and subside section (three) (21), it is the horn-like casing of scaling type, connect flue collector (25) in the below of compiling mixer () (18), ejiction opening (20) and filter screen block (22) are arranged in separate and subside section (three), the top has throat (26), below that the interior return duct (23) of insertion filtering ponds (1) is arranged; Suction nozzle (14) on the collecting bottle (12) is connected with air compressor, and collecting bottle (12) is communicated with nozzle (17) by control valve (15), rubber plastic pipe (16), and nozzle (17) places on the flue collector (25).Filtering ponds (1) are box-shapeds, bottom and sealing all around, unsettled dividing plate is arranged in the pond, between dividing plate bottom and the periphery filter screen is installed, the top cavity of filter screen is filter screen groove (2), on a side filtering ponds end face of filter screen groove (2), cover plate is housed, the mixer (3) and the filter screen case (4) of driven by motor arranged in the filtering ponds in cover plate.At spray head (8) lid with lug (9) go up being installed, is peephole (10) on the end face of lid with lug, hermatic door (24) is arranged in separate and subside section (three) (21) below just.

Compared with the prior art, the utility model is worked as sulfur-bearing, ash-laden gas compiles in scaling type compiles mixer () and activity oxidation manganese or vaporific milk of lime that be blown into or spray carry out fusion reaction, promptly to mixer fusion reaction once more, physical phenomenon according to weight whereabouts and freely falling body, the activity oxidation manganese and the milk of lime that are blown into and spray into hybrid reaction spread at scaling type, separate, fall or flow to return duct in the sedimentation device and recycle use after treatment, can not produce secondary pollution fully, flue gas after being purified is discharged by the draft of chimney, thereby play gas cleaning, reduce the sulfur-bearing that coal-burning boiler is discharged, ash-laden gas is to the severe contamination of atmosphere.

Accompanying drawing 1 is the utility model structural representation;

Accompanying drawing 2 is the utility model desulfurization and dedusting process schematic diagrames.

Embodiment of the present utility model: as shown in Figure 1, wet desulphurization, dedusting, smoke evacuation: the filtering ponds (1) by brick mix structure are poured pulverized limestone or calcium carbide ashes in the filter screen groove (2) into, (ratio is: pulverized limestone or calcium carbide ashes 20% to inject water, water 80%) stir into emulsus through mixer (3), again in filter screen case (4) enters suction tube (5), pump by tubing pump (6) and to enter the transparent rubber plastic pipe of high pressure (7) until spray head (8), ejection nebulizes, for ease of cleaning spray head (8), concave-convex type lid with lug (9) can be outwarded winding and change cleaning, see through the peephole (10) that is installed on the lid with lug (9) and observe adjusting spray head (8), making ejection be vaporific milk of lime must cover completely whole scaling type mixed reactor and compile mixer () (18), again by hybrid reaction buffering spray arranging device mixing breeze way (two) (19), by milk of lime flue gas ejiction opening (20) spirt scaling type separate and subside section (three) (21), observe the vaporific hybrid reaction state with the sulfur-bearing ash-laden gas of milk of lime in the three phases, the spray effect of spray head (8) is transferred to optimum degree.

The fixed head of two spray heads (8) is two fan hermatic doors (11), and a fan is arranged on the positive back that the scaling type mixed reactor compiles mixer () (18); Another fan is arranged on the back bevel of hybrid reaction buffering spray arranging device mixing breeze way (two) (19); Play the effect of being convenient to remove the dirty thing of collection.

Front end at hybrid reaction buffering spray arranging device mixing breeze way (two) (19), milk of lime flue gas ejiction opening (20) front is provided with a stainless steel filtering net block (22) that can cover whole section of this milk of lime flue gas ejiction opening (20) fully, this stainless steel filtering net block (22) is subjected to the effect of milk of lime flue gas ejiction opening (20) jet power, swing back and forth, in scaling type decomposition, separation, diffusion, sedimentation device diffusive separation settling section (three) (21), carry out separate and subside, reached the separation of flue gas, water, dirt fully.

Flue gas after being purified goes up the stack draught of installing with throat (26) and discharges.With milk of lime after sulfur-bearing, the ash-laden gas hybrid reaction, particulate through being arranged on the return duct (23) of scaling type separate and subside section (three) (21) lower bottom part, drainage is advanced the interior circular regeneration of filtering ponds (1) and is used.Be arranged on just following hermatic door (24) the easy access sliding screen block (22) of separate and subside section (three) (21) and remove the dirty thing of collection.

Dry desulfurization device: (its hybrid reaction process is the same with wet method)

Install and fix collecting bottle (12) at boiler flue collector place, twist-off closure (13) the powdered activated manganese oxide of packing into, adopt air compressor that compressed air is poured suction nozzle (14), by the transparent rubber plastic pipe of high pressure (16), control valve (15), spray in the flue collector (25) by nozzle (17), and can observe the straying quatity that sprays into the powdered activated manganese oxide in the flue collector (25) and mix at scaling type with the sulfur-bearing ash-laden gas and compile the hybrid reaction situation that the buffering decomposition and separation spreads the sedimentation three phases, make it to reach the desulfurized effect of the best.

As shown in Figure 2, be desulfurization, dust removal process, the horn-like casing of scaling type is that a bore is descending, and is then ascending again irregular but program is arranged, well-bedded scaling type body.

Pour into the sulfur-bearing ash-laden gas that compiles mixer () (18) by flue collector (25), enrich the throat of mixing to the lower end setting with the vaporific milk of lime and the powdered activated manganese oxide of spray head (8) ejection gradually in the space of the big volume of this section and get into mixing breeze way (two) (19), since at milk of lime exhanst gas outlet (20) bore of this section setting less than upper end throat, so the flue gas milk of lime of getting into can not pass through fast at this, the jet power that must pass through spray head (8) once more sprays out them outside the milk of lime flue gas ejiction opening (20) once more, borrow the effect of the injection surplus energy of milk of lime flue gas ejiction opening (20), in separate and subside section (three) (21), it is far away apart from milk of lime flue gas ejiction opening (20) that throat is made as top, the bottom is nearer, plays to stop and down wander unimpeded effect.

Be provided with a stainless steel filtering net block (22) that coincide with this section inwall but can freely swing on the throat top of separate and subside section (three) (21), it covers milk of lime flue gas ejiction opening (20) fully, ejecta is constantly fallen, carry out last mixed decomposition, separation, reaction, sedimentation, diffusion, discharge to different directions.

Claims

1, a kind of coal-burning boiler dry method, the wet method sulphur removing and dust removing smoke eliminator, by filtering ponds, mixer, suction tube, tubing pump, rubber plastic pipe, spray head, collecting bottle, compile mixer (), mix breeze way (two), separate and subside section (three), hermatic door and flue collector are formed, it is characterized in that: filter screen groove (2) is arranged in the filtering ponds (1), mixer (3) and filter screen case (4), suction tube (5) inserts in the filter screen case (4) and with tubing pump (6) and is connected, tubing pump (6) is connected with two spray heads (8) by rubber plastic pipe (7), spray head (8) is communicated with compiling mixer () (18) and mix breeze way (two) (19) inner chamber by hermatic door (11), compile mixer () and mix breeze way (two) and the compound connection of separate and subside section (three) (21), it is the horn-like casing of scaling type, connect flue collector (25) in the below of compiling mixer () (18), ejiction opening (20) and filter screen block (22) are arranged in separate and subside section (three), the top has throat (26), below that the interior return duct (23) of insertion filtering ponds (1) is arranged; Suction nozzle (14) on the collecting bottle (12) is connected with air compressor, and collecting bottle (12) is communicated with nozzle (17) by control valve (15), rubber plastic pipe (16), and nozzle (17) places on the flue collector (25).

2, coal-burning boiler dry method according to claim 1, wet method sulphur removing and dust removing smoke eliminator, it is characterized in that: filtering ponds (1) are box-shapeds, bottom and sealing all around, unsettled dividing plate is arranged in the pond, between dividing plate bottom and the periphery filter screen is installed, the top cavity of filter screen is filter screen groove (2), on a side filtering ponds end face of filter screen groove (2) cover plate is housed, and the mixer (3) and the filter screen case (4) of driven by motor arranged in the filtering ponds in cover plate.

3, coal-burning boiler dry method according to claim 1, wet method sulphur removing and dust removing smoke eliminator, it is characterized in that: go up at spray head (8) lid with lug (9) is installed, be peephole (10) on the end face of lid with lug, hermatic door (24) arranged below just in separate and subside section (three) (21).