CN102350168B - Dust-removing system for biomass gasification furnace - Google Patents
Dust-removing system for biomass gasification furnace Download PDFInfo
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- CN102350168B CN102350168B CN 201110277583 CN201110277583A CN102350168B CN 102350168 B CN102350168 B CN 102350168B CN 201110277583 CN201110277583 CN 201110277583 CN 201110277583 A CN201110277583 A CN 201110277583A CN 102350168 B CN102350168 B CN 102350168B
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Abstract
The invention relates to a gas purifying system, and particularly relates to a dust-removing system for a biomass gasification furnace. According to the technical scheme provided by the invention, the dust-removing system for the biomass gasification furnace comprises a cyclone dust collector, a tubular dust-removing cooler, a spraying dust-removing cooling tower and a foam dust-removing cooling tower; an exhaust port of the biomass gasification furnace is connected to a smoke inlet connecting pipe of the cyclone dust collector; a first smoke exhausting connecting pipe of the cyclone dust collector is connected to a second smoke inlet connecting pipe of the tubular dust-removing cooler; a second smoke exhausting connecting pipe of the tubular dust-removing cooler is connected to a third smoke inlet connecting pipe of the spraying dust-removing cooling tower; and a third smoke exhausting connecting pipe of the spraying dust-removing cooling tower is connected to a fourth smoke inlet connecting pipe of the foam dust-removing cooling tower. The dust-removing system is characterized by simple structure, better dust-removing effect, lower running cost, and the like.
Description
Technical field
The present invention relates to a kind of gas purge system, especially a kind of dust pelletizing system of biomass gasifying furnace.
Background technology
The dust pelletizing system of prior biological matter gasification furnace is poor to the clean-up effect of high-temperature flue gas, cause in the low temperature partial fume of postorder dustiness too high, the situation that equipment stops up often occurs, the cleaning cycle of equipment is very short, has influenced biological gasification system to a great extent and has normally moved.At present a kind of can dedusting have the fault that reduces cleaner again, and the product that prolongs the life cycle of dust pelletizing system to greatest extent becomes industry and is badly in need of.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the dust pelletizing system of the less biomass gasifying furnace of a kind of simple in structure, better dust removal effect, operating cost is provided.
According to technical scheme provided by the invention, the dust pelletizing system of described biomass gasifying furnace, it comprises rotoclone collector, the tube type dust removing cooler, spraying and dedusting cooling tower and foam dust-removing cooling tower, the exhaust outlet of biomass gasifying furnace and the flue gas of rotoclone collector enter to take over and join, the first flue gas outlet connection of rotoclone collector and second flue gas of tube type dust removing cooler enter to take over and join, the second flue gas outlet connection of tube type dust removing cooler and the 3rd flue gas of spraying and dedusting cooling tower enter to take over and join, and the 3rd flue gas outlet connection of spraying and dedusting cooling tower and the 4th flue gas of foam dust-removing cooling tower enter to take over and join.
It comprises that epimere is that cylindric, hypomere is the cone shape tube that gathers dust described rotoclone collector, first flue gas of cylindric connection at the tube that gathers dust enters adapter, fixedly be plugged with the first flue gas outlet connection in the tube that gathers dust cylindric, the lower limb that first flue gas enters adapter is higher than the bottom of the first flue gas outlet connection.
The lower limb that first flue gas enters adapter exceeds the bottom 300 ~ 500mm of the first flue gas outlet connection; The described tube that gathers dust comprises internal layer cylinder, is provided with the middle level wearing layer at the outer surface of internal layer cylinder, is provided with outer layer barrel at the outer surface of middle level wearing layer; Described middle level wearing layer is abrasion-proof concrete.
It is included in the hard-wired tube connector of top ends of hypomere pipe described tube type dust removing cooler, top ends at tube connector is fixedly connected with the epimere pipe, the internal diameter of hypomere pipe is greater than the internal diameter of epimere pipe, the height of hypomere pipe is greater than the height of epimere pipe, tube connector is one section conical tube, be provided with second flue gas at the hypomere pipe and enter adapter, be provided with the second flue gas outlet connection at the top of epimere pipe lower position, second flue gas enters the internal diameter of adapter less than the internal diameter of the second flue gas outlet connection, the top ends of epimere pipe has pipe plug, at pipe plug shower nozzle is installed.
The internal diameter of described hypomere pipe is 700 ~ 1500mm; The internal diameter of described epimere pipe is 350 ~ 750mm; The internal diameter that described second flue gas enters adapter is 210 ~ 250mm; The internal diameter of the described second flue gas outlet connection is 250 ~ 300mm; Described second flue gas enter adapter towards with the second flue gas outlet connection towards opposite.
Its 3rd flue gas of being included in the setting of spray column pipe sidewall of described spraying and dedusting cooling tower enters adapter, top ends at the spray column pipe is provided with the 3rd flue gas outlet connection, the spray column pipe that enters between adapter and the 3rd flue gas outlet connection at the 3rd flue gas is provided with some shower waters adapters, every shower water in the spray column pipe is taken over the end and is equipped with atomizer, and atomizer is set in distance in short transverse.
Described atomizer is arranged on the axis of spray column pipe; The internal diameter of described spray column pipe is 700 ~ 1200mm, and the height of spray column pipe is 3500 ~ 5000mm; The internal diameter that described the 3rd flue gas enters adapter is 210 ~ 250mm; The internal diameter of described the 3rd flue gas outlet connection is 210 ~ 250mm.
Described foam dust-removing cooling tower comprises columned tower pipe, be provided with the 4th flue gas at the end of tower pipe section sidewall and enter adapter, top ends at the tower pipe is provided with the 4th flue gas outlet connection, foam generation web plate more than two or two is set in the tower pipe above flue gas enters adapter, foam generation web plate all is and is horizontally disposed with, foam generation web plate is the large semi-circular orifice plate, and the circumferential edges line position of every block of foam generation web plate all is connected one with the inwall of tower pipe, between the head and the tail two ends of the circumferential edges line of foam generation web plate, be fixedly connected with baffle plate, the top ends of described baffle plate exceeds upper surface one segment distance of foam generation web plate, all foam generation web plates are stacked shifting to install at interval in the tower pipe, being positioned at, the tower inside pipe wall of the baffle plate below of below is fixed with liquid dish, be positioned at the bottom of the baffle plate of below and insert liquid dish, the tower pipe that is positioned at the foam generation web plate top of the top is provided with feed tube, and the tower inside pipe wall that is positioned at the foam generation web plate top of the top is provided with liquid barrier.
The aperture of described foam generation web plate is 2 ~ 4mm; The internal diameter that described the 4th flue gas enters adapter is 210 ~ 250mm; The internal diameter of described the 4th flue gas outlet connection is 210 ~ 250mm.
Advantage such as that the present invention has is simple in structure, better dust removal effect and operating cost are less.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the front view of rotoclone collector among the present invention.
Fig. 3 is the vertical view of rotoclone collector among the present invention.
Fig. 4 is the front view of tube type dust removing cooler among the present invention.
Fig. 5 is the vertical view of tube type dust removing cooler among the present invention.
Fig. 6 is the front view of spraying and dedusting cooling tower among the present invention.
Fig. 7 is the vertical view of spraying and dedusting cooling tower among the present invention.
Fig. 8 is the overall structure schematic diagram of foam dust-removing cooling tower among the present invention.
Fig. 9 is the A-A cutaway view of Fig. 8.
The specific embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in the figure: the dust pelletizing system of this biomass gasifying furnace, it comprises rotoclone collector 1, tube type dust removing cooler 2, spraying and dedusting cooling tower 3 and foam dust-removing cooling tower 4, the flue gas of the exhaust outlet of biomass gasifying furnace 5 and rotoclone collector 1 enters adapter 1.2 and joins, the first flue gas outlet connection 3 of rotoclone collector 1 enters adapter 2.4 with second flue gas of tube type dust removing cooler 2 and joins, the second flue gas outlet connection 2.5 of tube type dust removing cooler 2 enters adapter 3.2 with the 3rd flue gas of spraying and dedusting cooling tower 3 and joins, and the 3rd flue gas outlet connection 3.3 of spraying and dedusting cooling tower 3 enters adapter 4.2 with the 4th flue gas of foam dust-removing cooling tower 4 and joins.
It comprises that epimere is that cylindric, hypomere is the cone shape tube 1.1 that gathers dust described rotoclone collector 1, first flue gas in tube 1.1 cylindric connections of gathering dust enters adapter 1.2, in the tube 1.1 that gathers dust cylindric, fixedly be plugged with the first flue gas outlet connection, 1.3, the first flue gases and enter the bottom that adapter 2 lower limb is higher than the first flue gas outlet connection 1.3.
First flue gas enters takes over bottom 300 ~ 500mm that 1.2 lower limb exceeds the first flue gas outlet connection 1.3; The described tube that gathers dust 1.1 comprises internal layer cylinder 1.11, is provided with middle level wearing layer 1.12 at the outer surface of internal layer cylinder 1.11, is provided with outer layer barrel 1.13 at the outer surface of middle level wearing layer 1.12; Described middle level wearing layer 1.12 is abrasion-proof concrete.
It is included in the hard-wired tube connector 2.2 of top ends of hypomere pipe 2.1 described tube type dust removing cooler 2, top ends at tube connector 2.2 is fixedly connected with epimere pipe 2.3, the internal diameter of hypomere pipe 2.1 is greater than the internal diameter of epimere pipe 2.3, the height of hypomere pipe 2.1 is greater than the height of epimere pipe 2.3, tube connector 2.2 is one section conical tube, be provided with second flue gas at hypomere pipe 2.1 and enter adapter 2.4, be provided with the second flue gas outlet connection 2.5 at the top of epimere pipe 2.3 lower position, second flue gas enters the internal diameter of adapter 2.4 less than the internal diameter of the second flue gas outlet connection 2.5, the top ends of epimere pipe 2.3 has pipe plug 2.6, at pipe plug 2.6 shower nozzle 2.7 is installed.
The internal diameter of described hypomere pipe 2.1 is 700 ~ 1500mm; The internal diameter of described epimere pipe 2.3 is 350 ~ 750mm; The internal diameter that described second flue gas enters adapter 2.4 is 210 ~ 250mm; The internal diameter of the described second flue gas outlet connection 2.5 is 250 ~ 300mm; Described second flue gas enter take over 2.4 towards with the second flue gas outlet connection 2.5 towards opposite.
Its 3rd flue gas of being included in the 3.1 sidewall settings of spray column pipe of spraying and dedusting cooling tower 3 enters takes over 3.2, top ends at spray column pipe 3.1 is provided with the 3rd flue gas outlet connection 3.3, enter the spray column pipe of taking between the 3.2 and the 3rd flue gas outlet connection 3.3 3.1 at the 3rd flue gas and be provided with some shower waters adapters 3.4, every shower water in spray column pipe 3.1 is taken over 3.4 ends and is equipped with atomizer 3.5, and atomizer 3.5 is set in distance in short transverse.
Described atomizer 3.5 is arranged on the axis of spray column pipe 3.1; The internal diameter of described spray column pipe 3.1 is 700 ~ 1200mm, and the height of spray column pipe 3.1 is 3500 ~ 5000mm; The internal diameter that described the 3rd flue gas enters adapter 3.2 is 210 ~ 250mm; The internal diameter of described the 3rd flue gas outlet connection 3.3 is 210 ~ 250mm.
Foam dust-removing cooling tower 4 comprises columned tower pipe 4.1, be provided with the 4th flue gas at the end of tower pipe 4.1 section sidewall and enter adapter 4.2, top ends at tower pipe 4.1 is provided with the 4th flue gas outlet connection 4.3, foam generation web plate 4.4 more than two or two in entering the tower pipe of taking over above in the of 4.2 4.1, flue gas is set, foam generation web plate 4.4 all is and is horizontally disposed with, foam generation web plate 4.4 is the large semi-circular orifice plate, and the circumferential edges line position of every block of foam generation web plate 4.4 all is connected one with the inwall of tower pipe 4.1, between the head and the tail two ends of the circumferential edges line of foam generation web plate 4.4, be fixedly connected with baffle plate 4.5, the top ends of described baffle plate 4.5 exceeds upper surface one segment distance of foam generation web plate 4.4, all foam generation web plates 4.4 are stacked shifting to install at interval in tower pipe 4.1, being positioned at, tower pipe 4.1 inwalls of baffle plate 4.5 belows of below are fixed with liquid dish 4.6, be positioned at the bottom of the baffle plate 4.5 of below and insert liquid dish 4.6, the tower pipe 4.1 that is positioned at foam generation web plate 4.4 tops of the top is provided with feed tube 4.7, and tower pipe 4.1 inwalls that are positioned at foam generation web plate 4.4 tops of the top are provided with liquid barrier 4.8.
The aperture of described foam generation web plate 4.4 is 2 ~ 4mm; The internal diameter that described the 4th flue gas enters adapter 2 is 210 ~ 250mm; The internal diameter of described the 4th flue gas outlet connection 3 is 210 ~ 250mm.
Living beings gasify in biomass gasifying furnace 5 and produce the high-temperature combustible gas body, at first enter two stage cyclone dust-precipitator 1, enter by flue gas and to take over 1.2 and enter the gather dust overwhelming majority of the swirling eddy in the tube 1.1 of deduster and justify simplified shape in the shape of a spiral by oneself along wall and move to the cone bottom from top to bottom, form the outward turning dust-contained airflow that descends, the centrifugal force that produces in strong rotary course gets rid of the grit that density is far longer than gas to wall, grit is in case contact with wall, just loses inertia force and enters flue-dust retainer by momentum and the gravity of self of entrance velocity along the wall whereabouts.The air-flow that rotation descends is after arriving the cone bottom. along the axis part of deduster then upwards. form the interior rotational gas flow that rises, and by the flue gas outlet connection 1.3 of deduster.
Enter another fraction air-flow of taking over the inflow of 1.2 air inlets from flue gas, then flow to cyclone dust collectors top cover place, then along flue gas outlet connection 1.3 lateral current downflow, when reaching flue gas outlet connection 1.3 bottoms, be together to discharge from flue gas outlet connection 1.3 with the central gas stream that rises on the counter steer, be dispersed in wherein grit also in company with being pulled away.
Gather dust tins 1.1 by what internal layer cylinder 1.11, middle level wearing layer 1.12 and outer layer barrel 1.13 formed, after internal layer cylinder 1.11 galls, friction middle level wearing layer 1.12 when rotating along with dust, it is more smooth to make that middle level wearing layer 1.12 more grinds, and makes dust collection effect better.
The gas that comes out from two stage cyclone dust-precipitator 1 enters one-level tube type dust removing cooler 2, recirculated water forms the water curtain space by shower and shower nozzle 2.7 ejections, when dust-laden smog can be tackled the solid grit during by the multilayer water curtain, bump with it and condense, when the more flocculated particle of contained solid impurity in the liquid was big, the bottom that will drop to hypomere pipe 2.1 was discharged from.
Among the present invention, because the epimere pipe 2.3 of tube type dust removing cooler 2 is longer, like this, flue gas can suitably reduce temperature and speed in uphill process, after shower nozzle 7 starts, both removed the flue dust in the flue gas, flue-gas temperature is reduced greatly, also can reduce flue-gas temperature speed.After speed reduced, the spraying and dedusting effect of flue gas can be better.
Because flue gas enters the internal diameter of adapter 2.4 less than the internal diameter of flue gas outlet connection 2.5, speed can suitably reduce again when flue gas was about to discharge, and had further improved the spraying and dedusting effect of flue gas.
The gas that comes out from one-level tube type dust removing cooler 2 enters two-stage spraying and dedusting cooling tower 3, enter adapter 2.2 by flue gas and in the spraying and dedusting cooling tower, feed high-temperature flue gas, high-temperature flue gas is in uphill process, the water smoke combination of the dust in the high-temperature flue gas and atomizer 2.5 ejections, fall down, gas continues upper body, discharges by flue gas outlet connection 2.3 at last.
The gas that comes out from two-stage spraying and dedusting cooling tower 3 enters one-level foam dust-removing cooling tower 4, insert water for dust removal by feed tube 4.7, water drops on the foam generation web plate 4.4, produce small bubble, be formed with the froth bed of huge liquid film surface area at every block of foam generation web plate 4.4, have the aerosol of very big liquid film surface area simultaneously on the foam generation web plate 4.4, diffusion also takes place in this stage in flue dust, thereby further remove the fine grained flue dust, finally reach high efficiency of dust collection.
For high-temperature flue gas, baffle plate 4.5 has the guiding effect, makes the flue gas major part reach the space of foam generation web plate 4.4 tops by the hole on the foam generation web plate 4.4 from foam generation web plate 4.4 belows; For water for dust removal, the froth bed that the baffle plate 4.5 of projection can make formation from the foam generation web plate 4.4 staying on the foam generation web plate 4.4 as much as possible strengthened dust removing effects.
Claims (1)
1. the dust pelletizing system of a biomass gasifying furnace, it is characterized in that: it comprises rotoclone collector (1), tube type dust removing cooler (2), spraying and dedusting cooling tower (3) and foam dust-removing cooling tower (4), the flue gas of the exhaust outlet of biomass gasifying furnace and rotoclone collector (1) enters adapter (1.2) and joins, the first flue gas outlet connection (1.3) of rotoclone collector (1) enters adapter (2.4) with second flue gas of tube type dust removing cooler (2) and joins, the second flue gas outlet connection (2.5) of tube type dust removing cooler (2) enters adapter (3.2) with the 3rd flue gas of spraying and dedusting cooling tower (3) and joins, and the 3rd flue gas outlet connection (3.3) of spraying and dedusting cooling tower (3) enters adapter (4.2) with the 4th flue gas of foam dust-removing cooling tower (4) and joins;
It comprises that epimere is that cylindric, hypomere is the cone shape tube (1.1) that gathers dust described rotoclone collector (1), first flue gas of cylindric connection at the tube (1.1) that gathers dust enters adapter (1.2), fixedly be plugged with the first flue gas outlet connection (1.3) in the tube (1.1) that gathers dust cylindric, the lower limb that first flue gas enters adapter (1.2) is higher than the bottom of the first flue gas outlet connection (1.3);
The lower limb that first flue gas enters adapter (1.2) exceeds the bottom 300 ~ 500mm of the first flue gas outlet connection (1.3); The described tube (1.1) that gathers dust comprises internal layer cylinder (1.11), is provided with middle level wearing layer (1.12) at the outer surface of internal layer cylinder (1.11), is provided with outer layer barrel (1.13) at the outer surface of middle level wearing layer (1.12); Described middle level wearing layer (1.12) is abrasion-proof concrete;
It is included in the hard-wired tube connector of top ends (2.2) of hypomere pipe (2.1) described tube type dust removing cooler (2), top ends at tube connector (2.2) is fixedly connected with epimere pipe (2.3), the internal diameter of hypomere pipe (2.1) is greater than the internal diameter of epimere pipe (2.3), the height of hypomere pipe (2.1) is greater than the height of epimere pipe (2.3), tube connector (2.2) is one section conical tube, be provided with second flue gas at hypomere pipe (2.1) and enter adapter (2.4), top lower position at epimere pipe (2.3) is provided with the second flue gas outlet connection (2.5), second flue gas enters the internal diameter of adapter (2.4) less than the internal diameter of the second flue gas outlet connection (2.5), the top ends of epimere pipe (2.3) has pipe plug (2.6), at pipe plug (2.6) shower nozzle (2.7) is installed;
The internal diameter of described hypomere pipe (2.1) is 700 ~ 1500mm; The internal diameter of described epimere pipe (2.3) is 350 ~ 750mm; The internal diameter that described second flue gas enters adapter (2.4) is 210 ~ 250mm; The internal diameter of the described second flue gas outlet connection (2.5) is 250 ~ 300mm; Described second flue gas enter adapter (2.4) towards with the second flue gas outlet connection (2.5) towards opposite;
Its 3rd flue gas of being included in spray column pipe (3.1) sidewall setting of described spraying and dedusting cooling tower (3) enters adapter (3.2), top ends at spray column pipe (3.1) is provided with the 3rd flue gas outlet connection (3.3), the spray column pipe (3.1) that enters between adapter (3.2) and the 3rd flue gas outlet connection (3.3) at the 3rd flue gas is provided with some shower waters adapters (3.4), every shower water in spray column pipe (3.1) is taken over (3.4) end and is equipped with atomizer (3.5), and atomizer (3.5) is set in distance in short transverse;
Described atomizer (3.5) is arranged on the axis of spray column pipe (3.1); The internal diameter of described spray column pipe (3.1) is 700 ~ 1200mm, and the height of spray column pipe (3.1) is 3500 ~ 5000mm; The internal diameter that described the 3rd flue gas enters adapter (3.2) is 210 ~ 250mm; The internal diameter of described the 3rd flue gas outlet connection (3.3) is 210 ~ 250mm;
Described foam dust-removing cooling tower (4) comprises columned tower pipe (4.1), be provided with the 4th flue gas at the end of tower pipe (4.1) section sidewall and enter adapter (4.2), top ends at tower pipe (4.1) is provided with the 4th flue gas outlet connection (4.3), foam generation web plate (4.4) more than two or two is set in the tower pipe (4.1) above flue gas enters adapter (4.2), foam generation web plate (4.4) all is and is horizontally disposed with, foam generation web plate (4.4) is the large semi-circular orifice plate, and the circumferential edges line position of every block of foam generation web plate (4.4) all is connected one with the inwall of tower pipe (4.1), between the head and the tail two ends of the circumferential edges line of foam generation web plate (4.4), be fixedly connected with baffle plate (4.5), the top ends of described baffle plate (4.5) exceeds upper surface one segment distance of foam generation web plate (4.4), all foam generation web plates (4.4) are stacked shifting to install at interval in tower pipe (4.1), being positioned at, tower pipe (4.1) inwall of baffle plate (4.5) below of below is fixed with liquid dish (4.6), be positioned at the bottom of the baffle plate (4.5) of below and insert liquid dish (4.6), the tower pipe (4.1) that is positioned at foam generation web plate (4.4) top of the top is provided with feed tube (4.7), and tower pipe (4.1) inwall that is positioned at foam generation web plate (4.4) top of the top is provided with liquid barrier (4.8);
The aperture of described foam generation web plate (4.4) is 2 ~ 4mm; The internal diameter that described the 4th flue gas enters adapter (4.2) is 210 ~ 250mm; The internal diameter of described the 4th flue gas outlet connection (4.3) is 210 ~ 250mm.
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| CN 201110277583 CN102350168B (en) | 2011-09-19 | 2011-09-19 | Dust-removing system for biomass gasification furnace |
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| CN 201110277583 CN102350168B (en) | 2011-09-19 | 2011-09-19 | Dust-removing system for biomass gasification furnace |
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| CN102350168B true CN102350168B (en) | 2013-08-14 |
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