CN206001448U - Recirculating fluidized bed Even air distribution system - Google Patents

Abstract

The utility model discloses a kind of recirculating fluidized bed Even air distribution system, including fluid bed and Even air distribution device.Fluid bed include fluidized-bed combustion boiler body, air distribution plate and several be arranged in the blast cap on air distribution plate.Flue is connected on the side wall of fluidized-bed combustion boiler body the flue gas to produce fluidising chamber's fuel combustion and discharges.Air compartment includes distributor chamber and inlet air plenum, and distributor chamber includes front bulkhead, two side, the roof of the extension that is inclined upwardly from the top of front bulkhead and the diapire from the downward-sloping extension in the bottom of front bulkhead.Distribution interior is at least provided with the first deflector and the second deflector, and the both sides of the edge of the first deflector and the second deflector are individually fixed in the two side of distributor chamber.The fluidized gas for making the system enter fluidized bed reduce the probability for whirlpool and backflow occur, it is ensured that fluidized gas even into fluid bed everywhere, avoid the occurrence of the phenomenon of concentrated wear and coking, can fully improve efficiency of combustion.

Description

Recirculating fluidized bed Even air distribution system

Technical field

The utility model is related to a kind of recirculating fluidized bed, more particularly to a kind of recirculating fluidized bed blowing system.

Background technology

The unique flow dynamic characteristic of CFBB and structure possess which, and fuel tolerance is wide, efficiency of combustion Height, high-efficiency desulfurization, low-nitrogen oxide discharging, load regulation range many unique advantages such as big.But, most fluid bed Air flow method is uneven, causes power consumption greatly, easily to wear and tear and coking, high energy consumption, and changing one of measure of this undesirable condition is exactly Cloth wind system is reasonably designed.

Cloth wind system is one of core system in CFBB, and the uniformity of cloth wind is just to ensure whole system The pillar for often operating, irrational cloth wind can affect the overall combustion conditions of boiler, or even can not realize fluidized bed combustion at all. Therefore, reasonable, uniform cloth wind is the key that guarantee CFBB is normally fluidized, stably burnt with safe operation.

As a kind of No. 201520859139.1 CFBB cloth for disclosing even distributing wind of Chinese patent application Wind system, including the air compartment of single admission, air compartment top is air distribution plate, and along air intake direction height, gradually high formation one is inclined for air compartment bottom Angle, air distribution plate are divided at least 3 regions along air intake direction, and the resistance along each region in air intake direction is gradually increased, air compartment bottom Inclination angle scope is 5～15 degree, and on air distribution plate, the cap structure form in each region is identical, is opened by adjusting zones of different on air distribution plate The mode of hole density is changing the drag characteristic in each region.The patent application is special by the resistance for adjusting zones of different on air distribution plate Property, the air distribution plate along depth direction drag characteristic alternation is designed, so as to reach the uniform purpose of cloth wind.However, the patent application The CFBB cloth wind system of designed even distributing wind is only capable of the equal of the cloth air quantity in 3 regions for realizing air distribution plate Even, it is impossible to realize the air output of arbitrary perforate in air distribution plate uniform.

A kind of and for example grate furnace air compartment entrance Even air distribution device disclosed in Chinese Patent No. 201210192671.3, Including anti-" J " the shape upper spacer installed in grate furnace air compartment import top, the top of upper spacer apart from 10～40mm of fire grate, on every The upper straight section length of plate is 10～20mm, and lower straight section length is 25～40mm, upper spacer overall height H 1=a+ (0.3～0.4) x； The vertical component of upper spacer opens up " balance pipe " 2；Upper spacer from air compartment air inlet distance S1=(0.5～0.6) × (0.25～ 0.3)L；Wherein a is the distance of fire grate and air inlet top, and x is the height of air inlet, and L is air compartment length.However, the patent Shen Grate furnace air compartment entrance Even air distribution device that please be designed cannot be avoided completely only with the upper spacer of anti-" J " shape special shape The situation for occurring whirlpool and backflow in air distribution device of portion gas.

Therefore it provides one kind avoids gas from whirlpool and backflow occur and can realize all uniform recycle stream of everywhere air distribution amount Changing bed Even air distribution system becomes urgent problem in the industry.

Content of the invention

The purpose of this utility model is to provide a kind of recirculating fluidized bed Even air distribution system, and the system enters the stream of fluidized bed Change gas and reduce the probability for whirlpool and backflow occur, it is ensured that the fluidized gas for entering fluidized bed everywhere are evenly distributed, Neng Gouchong Divide and improve efficiency of combustion.

To achieve these goals, the utility model provides a kind of recirculating fluidized bed Even air distribution system, including：Fluidisation Bed and flue.Fluid bed includes fluidized-bed combustion boiler body, located at fluidized-bed combustion boiler body interior and by fluidized-bed combustion boiler Body interior is divided into the air distribution plate of fluidising chamber above and underlying air compartment and several are arranged in air distribution plate On for fluidized wind being sprayed to the blast cap of fluidising chamber.Flue is connected on the side wall of fluidized-bed combustion boiler body flowing The flue gas for changing indoor generation is discharged.Air compartment includes the distributor chamber below air distribution plate and the inlet air plenum positioned at distributor chamber side, Distributor chamber include front bulkhead, two side, the roof of the extension that is inclined upwardly from the top of front bulkhead and from the bottom of front bulkhead to The lower diapire for inclining extension.Through the extending end of roof first plane parallel with air distribution plate and the extending end through diapire Vertical range between the second plane parallel with air distribution plate is H.The front bulkhead distance of distributor chamber is through the extending end of roof And the threeth planar horizontal distance vertical with the first plane of the extending end through diapire is W.Distribution interior is at least provided with the One deflector and the second deflector, the both sides of the edge of the first deflector and the second deflector are individually fixed in the both sides of distributor chamber Wall, the vertical range of first plane of feather edge distance of the first deflector are 0.75～0.85H, the feather edge of the first deflector away from Horizontal range from the 3rd plane is 0.15～0.25W, and the first deflector is with respect to the second plane with 25～35 degree of inclination angle Degree extends forward 0.1～0.2H upwards from feather edge.The vertical range of first plane of feather edge distance of the second deflector is 0.6～0.7H, the horizontal range of the 3rd plane of feather edge distance of the second deflector is 0.35～0.5W, and the second deflector is relative 0.15～0.25H, wherein, W are extended forward upwards from feather edge with 60～70 degree of inclination angle in the second plane:H is 1～1.5: 1.Wherein, Even air distribution device of the present utility model is referred to by air compartment and its internals, air distribution plate and blast cap and supporting The device that connecting pipeline is constituted.

Preferably, distribution interior is further fitted with the 3rd deflector, and the 3rd deflector includes water conservancy diversion straight panel and self-conductance The water conservancy diversion arcs plate that the feather edge of straight panel extends rearward is flowed, the vertical range of first plane of feather edge distance of water conservancy diversion straight panel is 0.65～0.75H, the horizontal range of the 3rd plane of feather edge distance of water conservancy diversion straight panel is 0.55～0.70W, and water conservancy diversion straight panel is relative 0.15～0.2H is extended forward upwards from feather edge with 70～80 degree of inclination angle in the second plane, the central angle of water conservancy diversion arcs plate is 80～100 degree and radius are 0.05～0.1H.It is highly preferred that water conservancy diversion straight panel is tangent with water conservancy diversion arcs plate.

Selectively, some air vents can be had as needed on the first deflector, the second deflector, also can not perforate.

Selectively, the inlet air plenum of air compartment includes roof, diapire, aft bulkhead and two side, the roof of inlet air plenum with point The roof for joining room is connected, and the diapire of inlet air plenum is connected with the diapire of distributor chamber, the two side of inlet air plenum respectively with distributor chamber two Side wall is connected, and the aft bulkhead of inlet air plenum is oppositely arranged on the longitudinal direction of air compartment with the front bulkhead of distributor chamber, after roof is neighbouring End wall is provided with air inlet, and the bottom of aft bulkhead turns forward to form deep bead, the diapire phase of the feather edge of deep bead and inlet air plenum Even.

Selectively, the roof of distributor chamber is provided with some air outlets in array-like, each air outlet respectively by blast pipe with Each blast cap connection of air distribution plate is so that the indoor air of distribution is delivered to inside fluid bed via blast pipe.

Each blast cap includes inner tube, be nested with outside in inner tube outer tube and from the lateral wall interval of outer tube downward-sloping and At least two discharge pipes connected with outer tube, each blast pipe of inner tube from the upper surface of air distribution plate on the air distribution plate to Upper extension, the bottom of outer tube are connected to the upper surface of air distribution plate, and the top closure of outer tube and roof are located at the upper of the top of inner tube Side.Wherein, at least six air holes are provided with the tube wall of outer tube below at least two discharge pipes so that the fluidized wind in air compartment Via behind the space that air inlet is entered between outer wall of inner tube and outer tube wall by the top of inner tube, a part passes through at least two The upper surface of air-out pipe inspection to air distribution plate, another part are sprayed to fluid bed by least six air holes.

Selectively, some air outlets that the roof of distributor chamber is arranged in array-like are equal in magnitude.

Selectively, the distance between upper surface of the end of discharge pipe and air distribution plate for whole inner tube length six/ 1/1st to three.The distance between inner tube top and outer tube roof are 1st/1st to five/10th of whole inner tube length. Outer tube diameter is 1.5 times to 5 times of diameter of inner pipe.

Selectively, 2～4 isometric discharge pipes including being arranged around outer tube wall at equal intervals, the end of discharge pipe Two times of a diameter of outer tube diameter of place circumference are to five times.

Selectively, the angle between discharge pipe and the central axis of inner tube is set to 30～60 degree, preferably 40～50 degree, Than such as from about 45 degree.

Selectively, interior bottom of the tube can pass through welding, riveting with outer pipe bottom, threaded or alternate manner fixation company It is connected to the upper surface of air distribution plate.

Selectively, recirculating fluidized bed Even air distribution system also includes to be sequentially arranged along the flow of flue gas direction of flue Flue gas separation unit and heat exchange of heat pipe.

Wherein, flue gas separation unit is included separator body, is located at separator body side wall and is connected with flue High-temperature flue gas entry, be vertical at separator body inner chamber and top entry away from separator body roof outlet at bottom lead to Lower aiutage that flue is connected is crossed with heat exchange of heat pipe and located at separator body bottom and with fluidising chamber by returning The returning charge outlet that expects pipe is connected.

Selectively, the bottom of separator body is formed with tapered portion, and returning charge outlet is formed on the side wall of tapered portion.

Wherein, heat exchange of heat pipe includes shell, housing interior volume is divided into inversely parallel flue gas flow path and air If the median septum of stream and the dry heat pipe being located in median septum.Wherein, the evaporation ends of heat pipe are extended in flue gas flow path, The condensation end of heat pipe is extended in air flow circuit, and the two ends of flue gas flow path form dedusting smoke inlet respectively and low-temperature flue gas go out Mouthful, the two ends of air flow circuit form cool air inlet and hot air outlet respectively, dedusting smoke inlet by flue with The outlet at bottom of aiutage is connected so that high-temperature flue gas are introduced in flue gas flow path and for the cold air in air flow circuit to be heated into heat sky Gas, low-temperature flue gas outlet are connected to chimney by flue, and cool air inlet is connected with the first blower fan by cold air pipeline, Hot air outlet is connected with air compartment by hot-air pipeline.

Selectively, there is backflow flue gas pipeline in flue branch between flue gas separation unit and heat exchange of heat pipe, returns Stream flue gas pipeline is connected with hot-air pipeline and is provided with blender with by from the part of flue gas separation unit heat in junction Flue gas is mixed to form gaseous mixture with the hot-air from heat exchange of heat pipe.

Selectively, backflow flue gas pipeline is back to the 10～20% of amount of flue gas emission in blender and is mixed with hot-air, Preferably the 15% of amount of flue gas emission is back to blender.

Wherein, about 800 degrees Celsius of the temperature in backflow flue gas pipeline, the heat smoke of oxygen content about 5% and hot-air pipeline In about 200 degrees Celsius of temperature, the hot-air of oxygen content about 21% form about 500 degrees Celsius of temperature, oxygen content in a mixer About 13% gaseous mixture.

Selectively, blender includes blender body, the hot air inlet located at blender body one end, is located at mixing The heat smoke entrance of device body side, the gas mixing chamber inside the blender body and located at the another of blender body The mixed gas outlet of one end.Hot air outlet of the hot air inlet of blender by hot-air pipeline with heat exchange of heat pipe connects Connect, the heat smoke entrance of blender is connected with backflow flue gas pipeline, the mixed gas outlet of blender is by gaseous mixture pipeline and wind The air inlet of the inlet air plenum of room is connected, and wherein, in gas mixing chamber, neighbouring mixed gas outlet is provided with rotary blade.

Selectively, the high-temperature flue gas entry of flue gas separation unit is along the tangentially-arranged of separator body side wall.

Selectively, recirculating fluidized bed Even air distribution system also includes the coal grain entrance phase arranged on the side wall with fluidising chamber The feeding screw of connection is to be delivered to the indoor fluidized bed combustion of fluidisation by coal grain.

Selectively, the first valve being provided with neighbouring blender on backflow flue gas pipeline for adjusting backflow flue gas flow Door, the second valve being provided with neighbouring blender on hot-air pipeline for adjusting hot air flowrate.

Selectively, the first valve and/or the second valve can for operated pneumatic valve, electromagnetic valve, manually-operated gate or other Can achieve the valve of control traffic engineering capability.

Preferably, the second blower fan is provided between blender and air compartment to convey gaseous mixture in air compartment.

The beneficial effects of the utility model are：(1), deep bead is provided with case entering the fluidized wind of inlet air plenum in inlet air plenum It is gathered in the situation pockety after inlet air plenum bottom causes fluidized wind to enter distributor chamber；(2), distribution interior is provided with first Deflector, the second deflector, the 3rd deflector, the roof of distributor chamber are provided with equal-sized some air outlets in array-like, make The uniform flow of the indoor fluidized wind of fluidisation must be entered by each blast cap, improve the efficiency of combustion of the indoor coal dust of fluidisation；(3) The blast cap construction of bleed type, on the one hand makes fluidized reaction more uniform downwards, on the other hand avoids bed and leaks via blast cap To in air compartment.

Description of the drawings

Fig. 1 is the organigram of recirculating fluidized bed Even air distribution system of the present utility model.

Fig. 2 is the internal structure schematic diagram of the utility model air compartment.

Fig. 3 is the organigram of blast cap of the present utility model.

Specific embodiment

Fig. 1 is refer to, according to a kind of non-limiting embodiment of the present utility model, recirculating fluidized bed Even air distribution system Including：Fluid bed 100 and flue GL.

Wherein, fluid bed 100 includes fluidized-bed combustion boiler body 110, will simultaneously fluidize located at 110 inside of fluidized-bed combustion boiler body Bed boiler body internal 110 be separated into the air distribution plate 140 of fluidising chamber 120 above and underlying air compartment 130 and Several be arranged on air distribution plate 140 for fluidized wind being sprayed to the blast cap 150 of fluidising chamber 120.Flue GL connects So that the flue gas of generation in fluidising chamber 120 to be discharged on the side wall of fluidized-bed combustion boiler body 110.

As shown in Fig. 2 air compartment 130 is included positioned at the distributor chamber 132 of 140 lower section of air distribution plate and positioned at 132 side of distributor chamber Inlet air plenum 135.Distributor chamber 132 includes front bulkhead 1325, two side (not shown), is inclined upwardly from the top of front bulkhead 1325 The roof 1321 of extension and the diapire 1322 from the downward-sloping extension in the bottom of front bulkhead 1325.Through prolonging for roof 1321 Stretch end first plane parallel with air distribution plate 140 (A-A plane) flat with air distribution plate 140 with the extending end through diapire 1322 Vertical range between capable the second plane (B-B plane) is H.1325 distance of front bulkhead of distributor chamber 132 is through roof 1321 Extending end and threeth plane (C-C plane view) horizontal range vertical with the first plane of the extending end through diapire 1322 be W.Wherein, W:H is 1:1.

First deflector 601, the second deflector 602, the 3rd deflector 603 are installed in distributor chamber 132.Wherein, first Some air vent (not shown) are uniformly had on deflector, uniformly have some air vent (not shown) on the second deflector, the Nothing air vent on three deflectors.

The both sides of the edge of the first deflector 601, the second deflector 602 and the 3rd deflector 603 are individually fixed in distributor chamber 132 two side, the feather edge of the first deflector 601 is 0.8H apart from the vertical range of A-A plane, the first deflector 601 Feather edge is 0.2W apart from the horizontal range of C-C plane view, and the first deflector 601 is with respect to B-B plane with 30 degree of angle of inclination Extend forward 0.14H upwards from feather edge.The feather edge of the second deflector 602 is 0.63H apart from the vertical range of A-A plane, The feather edge of the second deflector 602 apart from C-C plane view horizontal range be 0.4W, the second deflector 602 with respect to B-B plane with 65 degree of inclination angle extends forward 0.2H upwards from feather edge.3rd deflector 603 includes water conservancy diversion straight panel 6031 and from water conservancy diversion The water conservancy diversion arcs plate 6032 that the feather edge of straight panel 6031 extends rearward, the feather edge of water conservancy diversion straight panel 6031 is apart from A-A plane Vertical range is 0.7H, and the feather edge of water conservancy diversion straight panel 6031 is 0.6W apart from the horizontal range of C-C plane view 131, water conservancy diversion straight panel 6031 upwards forward extend 0.18H with 76 degree of inclination angle from feather edge with respect to B-B plane, and water conservancy diversion arcs plate 6032 is central angle For 90 degree and radius for 0.063H circular arc.

Wherein, the inlet air plenum 135 of air compartment 130 includes roof 1351, diapire 1352, aft bulkhead 1355 and two side (figure Do not show).The roof 1351 of inlet air plenum 135 is joined directly together with the roof 1321 of distributor chamber 132, the diapire of inlet air plenum 135 1352 with The diapire 1322 of distributor chamber 132 is joined directly together, and the two side of inlet air plenum 135 is connected with the two side of distributor chamber 132 respectively.Air intake The aft bulkhead 1355 of room 135 is oppositely arranged on the longitudinal direction of air compartment 130 with the front bulkhead 1325 of distributor chamber 132, inlet air plenum 135 1351 adjacent back end wall 1355 of roof is provided with air inlet 13511, and the bottom of aft bulkhead 1355 turns forward to form deep bead 1356, the feather edge of deep bead 1356 is connected with diapire 1352.

The roof 1321 of distributor chamber 132 is provided with some air outlets (non-label) in array-like, and each air outlet is respectively by entering Airduct 700 is connected with each blast cap 150 of air distribution plate 140.As shown in figure 3, each blast cap 150 includes inner tube 1501, is nested with Outer tube 1502 outside inner tube 1501 and downward-sloping from the lateral wall interval of outer tube 1502 and internal with outer tube 1502 connect Two discharge pipes 1503 and 1504, each air inlet of inner tube 1501 from the upper surface of air distribution plate 140 on the air distribution plate 140 (not shown) is upwardly extended, and the bottom of outer tube 1502 is connected to the upper surface of air distribution plate 140, the top closure of outer tube 1502 and top Wall is located at the top on the top of inner tube 1501.Wherein, between first-class in the tube wall of outer tube 1502 below discharge pipe 1503 and 1504 Every being provided with six equal-sized air holes 1505.Between the end of discharge pipe 1503 and 1504 and the upper surface of air distribution plate 140 Distance is a quarter of 1501 length of whole inner tube.The distance between 1501 top of inner tube and 1502 roof of outer tube are whole interior / 6th of 1501 length of pipe.Two times of 1502 a diameter of inner tube of outer tube, 1501 diameter.

As shown in figure 1, used as a kind of alternative embodiments one, recirculating fluidized bed Even air distribution system is also included along flue gas Flue gas separation unit 200 and heat exchange of heat pipe 300 that the flow of flue gas direction of pipeline GL is sequentially arranged.

Wherein, flue gas separation unit 200 includes separator body 210, is located at 210 side wall of separator body and and fume pipe High-temperature flue gas entry 220 that road GL is connected, it is vertical at 210 inner chamber of separator body and top entry is away from separator body 210 roofs and lower aiutage 230 that outlet at bottom is connected with heat exchange of heat pipe 300 by flue GL and located at point The returning charge outlet 240 being connected by refeed line FL from 210 bottom of device body and with fluidising chamber 120.The bottom of separator body 210 Portion forms tapered portion, and returning charge outlet 240 is formed on the side wall of tapered portion.

Heat exchange of heat pipe 300 includes shell (non-label), housing interior volume is divided into inversely parallel flue gas flow path If the median septum (not shown) of (not shown) and air flow circuit (not shown) and the dry heat pipe being located in median septum (are schemed not Show).Wherein, the evaporation ends of heat pipe are extended in flue gas flow path, and the condensation end of heat pipe is extended in air flow circuit, flue gas flow path Two ends form dedusting smoke inlet 310 and low-temperature flue gas outlet 330 respectively, and the two ends of air flow circuit form cool air inlet respectively 350 and hot air outlet 370, dedusting smoke inlet 310 by flue GL be connected with the outlet at bottom of lower aiutage 230 with High-temperature flue gas are introduced in flue gas flow path the cold air in air flow circuit is heated into hot-air, low-temperature flue gas outlet 330 passes through Flue GL is connected to chimney (not shown), and cool air inlet 350 is by cold air pipeline (non-label) and the first blower fan F1 It is connected, hot air outlet 370 directly can be connected with air compartment 130 by hot-air pipeline.

As a kind of alternative embodiments two, flue GL flue gas separation unit 200 and heat exchange of heat pipe 300 it Between branch have backflow flue gas pipeline RL, backflow flue gas pipeline RL to be connected with hot-air pipeline HL and be provided with blender in junction 400 are mixed so that the part heat smoke from flue gas separation unit 200 is mixed to form with the hot-air from heat exchange of heat pipe 300 Gas.Backflow flue gas pipeline is back to about the 15% of amount of flue gas emission in blender 400 and is mixed with hot-air.

Blender 400 includes blender body, the hot air inlet 410 located at blender body one end, is located at blender The heat smoke entrance 430 of body side, the gas mixing chamber inside the blender body and located at the another of blender body The mixed gas outlet 450 of one end.The hot air inlet 410 of blender 400 is by hot-air pipeline HL and heat exchange of heat pipe 300 Hot air outlet 370 connects, and the heat smoke entrance 430 of blender 400 is connected with backflow flue gas pipeline RL, blender 400 mixed Close gas outlet 450 to be connected with the air inlet 13511 of the inlet air plenum 135 of air compartment 130 by gaseous mixture pipeline (non-label).Wherein, In gas mixing chamber, neighbouring mixed gas outlet is provided with rotary blade (not shown).

The first valve being provided with neighbouring blender 400 on backflow flue gas pipeline RL for adjusting backflow flue gas flow V1, the second valve V2 being provided with neighbouring blender 400 on hot-air pipeline HL for adjusting hot air flowrate.

Used as alternative embodiments three, recirculating fluidized bed Even air distribution system is also included with the side wall of fluidising chamber 120 (not Label) feeding screw 900 that is connected of the upper coal grain entrance 118 for arranging to be to be delivered to fluidisation combustion in fluidising chamber 120 by coal grain Burn.

Thus, fluidized wind (gaseous mixture from blender 400 or the air directly from blower fan) is via inlet air plenum 135 Air inlet 13511 enters inlet air plenum 135 via entering after 1356 water conservancy diversion of deep bead in distributor chamber 132, by the in the distributor chamber 132 One deflector 601, the second deflector 602 and the 3rd deflector 603 by fluidized wind in distributor chamber 132 evenly distributed after pass through into Airduct 700 enters blast cap 150.A fluidized wind part inside blast cap 150 is sprayed to air distribution plate by discharge pipe 1503 and 1504 140 upper surface, another part are sprayed to fluid bed 120 by six air holes 1505, are fed by spiral for fluidized bed combustion Device 900 is delivered to the coal grain in fluidising chamber 120 by coal grain entrance 118.

Although here has described preferred embodiment of the present utility model in detail, it is to be understood that the utility model is not The concrete structure for describing in detail here and illustrating is confined to, can be by the case of without departing from spirit and scope of the present utility model Those skilled in the art realizes other modifications and variant.Additionally, the parameter such as the temperature of system or ratio can basis Concrete application conditions are suitably chosen in scope disclosed in the utility model.

Claims (10)

1. a kind of recirculating fluidized bed Even air distribution system, including：

Fluid bed, the fluid bed includes fluidized-bed combustion boiler body, located at the fluidized-bed combustion boiler body interior and by the stream Fluidized bed boiler body interior is divided into air distribution plate and several arrangements of fluidising chamber above and underlying air compartment Blast cap on the air distribution plate；And

Flue, the flue are connected on the side wall of the fluidized-bed combustion boiler body；

It is characterized in that：The air compartment includes the distributor chamber below air distribution plate and the air intake positioned at the distributor chamber side Room, the distributor chamber include front bulkhead, two side, the roof of the extension that is inclined upwardly from the top of the front bulkhead and from institute State the diapire of the downward-sloping extension in bottom of front bulkhead, through the extending end of the roof parallel with the air distribution plate first Vertical range between plane the second plane parallel with the air distribution plate with the extending end through the diapire is H, described The front bulkhead distance of distributor chamber is through the extending end of the roof and the extending end through the diapire and described The horizontal range of the 3rd vertical plane of one plane is W, and the distribution interior is at least provided with the first deflector and the second water conservancy diversion Plate, the both sides of the edge of first deflector and second deflector are individually fixed in the two side of the distributor chamber, The feather edge of first deflector is 0.75～0.85H apart from the vertical range of first plane, first deflector Feather edge apart from the 3rd plane horizontal range be 0.15～0.25W, first deflector is with respect to described second Plane extends forward 0.1～0.2H, the feather edge of second deflector with 25～35 degree of angle of inclination upwards from feather edge Vertical range apart from first plane is 0.6～0.7H, and the feather edge of second deflector is apart from the 3rd plane Horizontal range be 0.35～0.5W, second deflector is with respect to second plane with 60～70 degree of inclination angle the bottom of from Edge extends forward 0.15～0.25H, wherein, W upwards:H is 1～1.5:1.

2. recirculating fluidized bed Even air distribution system as claimed in claim 1, it is characterised in that the distribution interior is pacified further Equipped with the 3rd deflector, the 3rd deflector includes that water conservancy diversion straight panel and the feather edge from the water conservancy diversion straight panel prolong rearward The water conservancy diversion arcs plate that stretches, the feather edge of the water conservancy diversion straight panel is 0.65～0.75H apart from the vertical range of first plane, described The feather edge of water conservancy diversion straight panel is 0.55～0.70W apart from the horizontal range of the 3rd plane, and the water conservancy diversion straight panel is with respect to institute State the second plane and 0.15～0.2H, the center of circle of the water conservancy diversion arcs plate are extended forward upwards from feather edge with 70～80 degree of inclination angle Angle is for 80～100 degree and radius is 0.05～0.1H.

3. recirculating fluidized bed Even air distribution system as claimed in claim 2, it is characterised in that first deflector, described Some air vents are had on second deflector.

4. recirculating fluidized bed Even air distribution system as claimed in claim 3, it is characterised in that the inlet air plenum of the air compartment Including roof, diapire, aft bulkhead and two side, the extending end phase of the roof of the inlet air plenum and the roof of the distributor chamber Even, the diapire of the inlet air plenum is connected with the extending end of the diapire of the distributor chamber, the two side of the inlet air plenum respectively with The two side of the distributor chamber is connected, and the front bulkhead of the aft bulkhead of the inlet air plenum and the distributor chamber is in the longitudinal direction of the air compartment It is oppositely arranged on direction, the roof of the inlet air plenum is provided with air inlet adjacent to the aft bulkhead, and the bottom of the aft bulkhead is forward Deep bead is formed slopely, the feather edge of the deep bead is connected with the diapire of the inlet air plenum.

5. the recirculating fluidized bed Even air distribution system as any one of Claims 1 to 4, it is characterised in that the distribution The roof of room is provided with some air outlets in array-like, and each described air outlet is respectively by each wind of blast pipe and the air distribution plate Cap is connected.

6. recirculating fluidized bed Even air distribution system as claimed in claim 5, it is characterised in that in each described blast cap includes Pipe, the outer tube that is nested with said inner tube outside and from the lateral wall of the outer tube be spaced downward-sloping and with the outer tube At least two discharge pipes of connection, each air inlet of said inner tube from the upper surface of the air distribution plate on the air distribution plate Upwardly extend, the bottom of the outer tube is connected to the upper surface of the air distribution plate, the top closure of the outer tube and roof is located at The top on the top of said inner tube, wherein, is provided with least below at least two discharge pipes on the tube wall of the outer tube Six air holes so that the fluidized wind in the air compartment is entered outside said inner tube by the top of said inner tube via the air inlet Behind space between wall and the outer tube wall, a part is upper by least two air-out pipe inspections to the air distribution plate Surface, another part are sprayed to the fluid bed by least six air holes.

7. recirculating fluidized bed Even air distribution system as claimed in claim 6, it is characterised in that the discharge pipe of the blast cap The distance between end and the upper surface of the air distribution plate be 1st/1st to three/6th of said inner tube length, described interior The distance between the top of pipe and roof of the outer tube are 1st/1st to five/10th of said inner tube length, the outer tube 1.5～5 times of a diameter of said inner tube diameter.

8. recirculating fluidized bed Even air distribution system as claimed in claim 7, it is characterised in that also include along the fume pipe Flue gas separation unit and heat exchange of heat pipe that the flow of flue gas direction in road is sequentially arranged；

The flue gas separation unit include separator body, located at the separator body side wall and with the flue phase The high-temperature flue gas entry of connection, be vertical at the separator body inner chamber and top entry away from the separator body top Wall and lower aiutage that outlet at bottom is connected with the heat exchange of heat pipe by the flue and separate located at described Device body bottom portion the returning charge outlet being connected with the air compartment；

The heat exchange of heat pipe includes shell, the housing interior volume is divided into inversely parallel flue gas flow path and air stream If the median septum on road and the dry heat pipe being located in septum plate, wherein, the evaporation ends of the heat pipe extend the cigarette In air-flow road, the condensation end of the heat pipe is extended in the air flow circuit, and the two ends of the flue gas flow path form dedusting respectively Smoke inlet and low-temperature flue gas outlet, the two ends of the air flow circuit form cool air inlet and hot air outlet respectively, described Dedusting smoke inlet is connected described to introduce high-temperature flue gas by the flue with the outlet at bottom of the lower aiutage The cold air in the air flow circuit is heated into hot-air in flue gas flow path, the low-temperature flue gas outlet passes through the fume pipe Road is connected to chimney, and the cool air inlet is connected with the first blower fan by cold air pipeline, and the hot air outlet is by warm Air line is connected with the air compartment.

9. recirculating fluidized bed Even air distribution system as claimed in claim 8, it is characterised in that the flue is in the cigarette Between air separation and the heat exchange of heat pipe, there are backflow flue gas pipeline, the backflow flue gas pipeline and the hot-air in branch Pipeline is connected and is provided with blender in junction.

10. recirculating fluidized bed Even air distribution system as claimed in claim 9, it is characterised in that the blender includes mixing Device body, located at described blender body one end hot air inlet, located at the blender body side heat smoke entrance, Gas mixing chamber inside the blender body and the gaseous mixture located at the other end of the blender body go out Mouthful, the hot-air of the hot air inlet of the blender by the hot-air pipeline with the heat exchange of heat pipe goes out Mouth connection, the heat smoke entrance of the blender are connected with the backflow flue gas pipeline, the mixing of the blender Gas outlet is connected with the air inlet of the inlet air plenum of the air compartment by gaseous mixture pipeline, wherein, in the gas mixing chamber The neighbouring mixed gas outlet is provided with rotary blade.