CN101963350A - Material separator for circulating fluidized bed boiler - Google Patents
Material separator for circulating fluidized bed boiler Download PDFInfo
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- CN101963350A CN101963350A CN201010504446XA CN201010504446A CN101963350A CN 101963350 A CN101963350 A CN 101963350A CN 201010504446X A CN201010504446X A CN 201010504446XA CN 201010504446 A CN201010504446 A CN 201010504446A CN 101963350 A CN101963350 A CN 101963350A
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Abstract
The invention discloses a material separator for a circulating fluidized bed boiler. The material separator is characterized in that: the lower end of a fume guide film-type screen which can be bent over is branched into two front rows of light tube bundles and two back rows of light tube bundles, wherein the two front rows of light tube bundles and the two back rows of light tube bundles are bridged above a storage bin and form a fume inlet and a fume outlet of a turning channel respectively; and the lower ends of the two front rows of light tube bundles and the two back rows of light tube bundles are communicated with a middle transverse collecting box of the boiler. The invention also discloses another material separator for the circulating fluidized bed boiler. The other material separator is characterized in that: the lower end of the fume guide film-type screen which can be bent over is branched into a front row of tube bundles and a back row of tube bundles, wherein the front row of tube bundles and the back row of tube bundles are positioned on the turning channel. The material separator has the advantages of advanced process, simple manufacturing and installation, wide application range, energy conservation, consumption reduction and remarkable emission reduction.
Description
Technical field
The present invention relates to a kind of core component of CFBB---material separator, the CFBB feed separation need not any special arrangement and resolution element, is by updraught flue, big dilatation turning channel and feed bin are the inertia-gravity separator that boiler body heating surface space constitutes naturally down.Relate in particular to the structural design of improving present various CFBB material separators, to the traditional CFBB that using and the energy-saving and emission-reduction transformation of grate firing chain-grate boiler.
Background technology
The burning in circulating fluid bed boiler technology is wide with its fuel tolerance, advantage such as efficiency of combustion height, discharged nitrous oxides are low, high-efficiency desulfurization, load adjustment ability are good by universally acknowledged be " cleaning " combustion technology of a kind of tool development prospect.
The Circulating Fluidized Bed separator is the core component of CFBB, be known as the heart of boiler, it mainly acts on is that a large amount of high-temp solid materials are separated from air-flow, send burner hearth back to, to keep the fast fluidized regime of combustion chamber, guarantee that fuel and desulfurizing agent repeatedly circulate, burn repeatedly and react, and reach desirable efficiency of combustion and desulfuration efficiency.Therefore, the quality of Circulating Fluidized Bed separator will directly affect workmanship, cost and the separative efficiency of whole circulation fluidized-bed combustion boiler.
The highest recirculating fluidized bed separator of occupation rate the most in vogue is a cyclone separator on the domestic and international market at present, its typical structure is the high temperature cyclone separator made from refractory material, its major advantage is the separative efficiency height, major defect is bulky, separator tangential entry wind speed height, resistance is big, air-introduced machine power consumption height, it is big that the gas-solid two-phase is carried serious flying dust amount secretly towards the reverse flow at high speed air-flow of feed bin, the original discharge concentration height of flue dust, separator needs liner and outer insulation, uses the Wear-resistant, high-temperature resistant material usage big, not only make the cost of raw material of separator and make installation cost and increase, and thermal inertia is big, easy high-temperature coking, and boiler start/ stop is slow.The boiler that has adopts water-cooled or vapour cold type cyclone separator, though reduced the Wear-resistant, high-temperature resistant material, solved the big problem of thermal inertia, make boiler noncoking, start and stop fast, but there is the shortcoming that wind speed height, resistance are big, the air-introduced machine power consumption is high equally, add its manufacturing process complexity again, cause the price height, it is very low that the client is difficult for accepting occupation rate of market.
Although application number be in 200910308160.1 the patent of invention on the feed separation in the disclosed CFBB and the market popular CFBB feed separation compared many advantages, as the low air-introduced machine power consumption of saving of flow resistance, film water cold wall structure is saved heat resistant and wear resistant material etc., but its structure still has many defectives, make its range of application restricted, full unblocked without hindrance as turning channel import and outlet, the one, the gas-solid two-phase is through advancing, inertial separation poor performance after the outlet influences inertial separation efficient, the 2nd, the gas-solid two-phase enters the turning channel dilatation deceleration differential snapshot of oneself and rings gravitational settling efficient, the 3rd, the feed bin front-back wall does not have water-cooling wall needs non-heating surface steel construction, not only influences the quality life-span of furnace wall but also increases non-heating surface steel and consume unfavorable anti-coking; The 4th, the range of application of this structure is little, is suitable for the fluidized-bed combustion boiler of＜35 steaming tons; The 5th, guarantee that the flow velocity of its subsidiary combustion chamber of feed separation efficient and secondary furnace suits＜3m/s, boiler volume is increased.
Summary of the invention
The present invention provides a kind of energy-conservation, consumption reduction for solving the technical problem that exists in the known technology, reduces discharging significantly, applied range, technology advanced person, make the CFBB material separator of installing simply, reducing cost significantly.
Inventive concept of the present invention is: constitute the tube bank that is beneficial to flue dust current-sharing collision inertial separation on the turning channel of this material separator, improve the efficient of gas solid separation, strengthen the differential that dilatation is slowed down, improve the efficient of gravitational settling.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of material separator of CFBB, comprise down pass and updraught flue that the membrane type screen of turning back on being directed under the flue gas is separated in the past backward, described down pass and updraught flue are installed in the feed bin that has the turning channel expansion space below them by sealing and are communicated with, the front upper part of this material separator is provided with smoke inlet, the upper back of this material separator is provided with exhanst gas outlet, the wall of this material separator is the upper collecting chamber that is connected described boiler and the water-cooling wall that is heated between the next part case, the upper end that the membrane type of turning back under the described guiding flue gas shields is communicated with the last horizontal collection case of described boiler, the lower end that the membrane type of turning back under the described guiding flue gas shields is branched into front two row's light pipes tube banks and back two row's light pipes are restrained, the two row's light pipes tube banks of described front and back two row's light pipes restrain all be bridged on described feed bin above, and forming the gas approach and the exhanst gas outlet of described turning channel respectively, the lower end that the two row's light pipes tube banks of described front and back two row's light pipes are restrained is communicated with horizontal collection case in the described boiler.
The front end that described front two row's light pipes are restrained and the antetheca of this material separator synthesize the interior backward crooked inclination tube bank of a row as wall coil before the described feed bin near back two rows; The rear end that described back two row's light pipes are restrained and the rear wall of this material separator synthesize the interior forward crooked inclination tube bank of a row as wall coil behind the described feed bin near back two rows.
Turn back on the down wall of membrane type screen and this material separator of described guiding flue gas is in full film type wall structure, half membrane wall structure, full light pipe pouring fireproof material structure and the dried refractory wall structure any one.
Another technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of material separator of CFBB, comprise down pass and updraught flue that the membrane type screen of turning back on being directed under the flue gas is separated in the past backward, described down pass and updraught flue are installed in the feed bin that has the turning channel expansion space below them by sealing and are communicated with, the front upper part of this material separator is provided with smoke inlet, the upper back of this material separator is provided with exhanst gas outlet, the wall of this material separator is the upper collecting chamber that is connected described boiler and the water-cooling wall that is heated between the next part case, the upper end that the membrane type of turning back under the described guiding flue gas shields is communicated with the last horizontal collection case of described boiler, the lower end that the membrane type of turning back under the described guiding flue gas shields is branched into front-seat tube bank and rear of tube bundle, described front-seat tube bank and rear of tube bundle are positioned on the described turning channel, described front row tube bank its lower end vertically downward is communicated with horizontal collection case under the membrane type screen, and the lower end of described rear of tube bundle is communicated with horizontal collection case under the described membrane type screen.
Described membrane type screen horizontal collection case down is communicated with by the vertical middle collection case of the communicating pipe and the side symmetry of described boiler.
Advantage and good effect that the present invention has are: feed separation need not any special arrangement and resolution element, by updraught flue and turning channel and the feed bin of dilatation more than one times are that boiler body heating surface space constitutes the inertia-gravity separator down, realize that feed separation is difunctional with heat transfer, technological break-through of the present invention, bring comprehensive a series of revolutionary variation, technology advanced person not only, make and install simply, and energy savings significantly, reduce soot emissions significantly, and improving comprehensive efficiency, realize on the multinomial performance details such as prolonged boiler service life breaking through.This material separator mean flow rate＜5m/s flow resistance is low, compares low 4 times more than of flow velocity with various cyclone separators, can save the air-introduced machine power consumption more than 30%, and making boiler long-time running saves energy is first advantage of the present invention.This material separator full water cooling wall construction, realize that feed separation is difunctional with heat transfer, compare with the high temperature cyclone separator that refractory material is made, can save the non-heating surface heat resisting steel of separator skeleton 100%, the employing water-cooling wall that is heated, the low range circulation can be saved separator Wear-resistant, high-temperature resistant material 90%, is second advantage of the present invention.The guiding flue gas membrane type screen of turning back on down forces flue gas co-flow behind the furnace outlet to fling feed bin, 2 times 180 degree of flue dust descend the inertial separation of turning back, 4 times and the inside and outside comb bundle collision in front and back inertial separation, flue gas enters the turning channel of dilatation more than one times from gas approach and makes the big dilatation deceleration of flue dust gravitational settling, flue gas enters the once more little dilatation deceleration of updraught flue gravitational settling from exhanst gas outlet, make and force flue gas descending, turn, up whole process is not only the overall process of gas solid separation, and be the overall process of efficient heat transfer, feed separation efficient height not only, the air-flow entrainment rate is low, and whole two-sided being heated of transverse tube screen, heating surface utilization rate height, environmental protection test through national authority department to experimental prototype, the original discharge concentration peak 3149mg/m of the coal flue dust of 57% ash content
3, be lower than nearly 5 times of GB, obviously separative efficiency is higher than various cyclone separators, is the 3rd advantage of the present invention.Its upper and lower capable flue and the big dilatation of turning channel are equivalent to omnidistance secondary furnace, have increased the tail-off time of combustible in stove, can reduce unburned carbon in flue dust, are the 4th advantages of the present invention.Technology advanced person of the present invention, simple in structure, do not have a complicated shaped piece, reduce the workload of steelframe and high-abrasive material significantly, can save separator and make installation cost 30%, separator all is a water-cooling wall, boiler start/ stop is fast, noncoking, load adjustment ability are good etc., is the 5th advantage of the present invention.Reducing the flying dust amount significantly, reduce heated surface at the end of boiler dust stratification and wearing and tearing, be beneficial to and reduce deashing intensity, steady heat transfer efficient, prolonged boiler service life save the energy from many aspects, be beneficial to and improve comprehensive efficiency, is the 6th advantage of the present invention.
The perfect adaptation of material separator of the present invention and boiler body, its down updraught flue be that secondary furnace not only adapts to the combustion colm, and biomass-burning or burning disposal domestic waste have more unique advantage.Overall structure of the present invention not only has the CFBB advantage, has more the fluidized-bed combustion boiler advantage.
The present invention imagines that routinely the low flow velocity volume of low range circulation is greater than the CFBB of high magnification circulation high flow rate, slightly calculate really not so through just, because the big barrel dliameter thickening Wear-resistant, high-temperature resistant material of cyclone separator, add separator tangential entry length of pipe section again, substantially satisfy the space of updraught flue under the separator of the present invention, actual conditions are that the boiler model that has is less than, what have is close, what have is slightly larger than, because of down pass of the present invention and burner hearth rear wall are common wall, down pass and vertical shaft antetheca or front-seat convection bank are common wall, adding down updraught flue and turning channel efficient heat transfer again prolongs combustible significantly in stove the advantage of tail-off time can reduce boiler height, in this case cumulative volume might less than, even if make greater than also having significant advantage, so the present invention has power saving, economize wear-resisting high-temperature material, reduce unburned carbon in flue dust, reduce the flue dust original discharge concentration, reduce wearing and tearing, prolonged boiler service life, the separative efficiency height, the separator noncoking, advantages such as boiler start/ stop is fast, what obviously its premium properties brought is energy-conservation, consumption reduction, many advantages such as reduction of discharging benefit not only are better than the size differences of volume, and should be the final targets of pursuing.
Sharply change the principle of inertial separation according to flue gas flow direction, principle according to flue gas flow rate flue dust natural subsidence in 3-5m/s, according to the principle of flue dust through unexpected dilatation deceleration gravitational settling, can reduce the principle of heating surface wear according to flue gas flow rate≤5m/s, the present invention has not only embodied above principle comprehensively, and embodied the flow direction, dilatation, the flow velocity of flue gas, the science (key technology is at this) of flow process comprehensively, here, flow to and be meant that gas-solid two-phase co-flow flings feed bin; Dilatation is meant that the gas-solid two-phase enters the big dilatation of turning channel more than one times, by＜5m/s to＜7m/s more suddenly to＜2.4m/s dilatation deceleration gravitational settling is in feed bin, flow velocity＜5m/s had both reduced the wearing and tearing to heating surface, was beneficial to the flue dust natural subsidence again; Flow process is meant flue gas distance of (updraught flue outlet) from the turning channel to the separator outlet, and this flow process makes flue gas that the time of flue dust sedimentation be arranged, and reduces air-flow and carries secretly.The present invention does not limit to above data, can adjust flexibly in practice, chooses different optimum datas according to different situations.
Description of drawings
Fig. 1 is the front view that first scheme of the present invention is applied to horizontal single drum-type boiler;
Fig. 2 is the front view that first scheme of the present invention is applied to horizontal double-drum boiler;
Fig. 3 is the front view that alternative plan of the present invention is applied to horizontal single drum-type boiler;
Fig. 4 is the front view that alternative plan of the present invention is applied to horizontal double-drum boiler.
1 is burner hearth among the figure, the 2nd, the burner hearth rear wall, the 3rd, in before horizontal collection case, the 4th, collection case during the side symmetry is vertical, the 5th, wall coil before the feed bin, the 6th, gas approach, the 7th, membrane type screen lower end bifurcated, the 8th, preceding down pass, the 9th, the membrane type screen of turning back on the guiding flue gas is following, the 10th, the burner hearth exhanst gas outlet, the 11st, horizontal collection case on the burner hearth exhanst gas outlet, the 12nd, go up horizontal collection case, the 13rd, side is to deserving to be called vertical collection case, the 14th, side symmetry water-cooling wall, the 15th, up exhanst gas outlet, the 16th, back updraught flue, the 17th, vertical shaft, the 18th, the vertical shaft antetheca, the 19th, exhanst gas outlet, the 20th, turning channel, the 21st, feed bin, the 22nd, wall coil behind the feed bin, the 23rd, the horizontal collection case in middle back, the 24th, dipleg, the 25th, the returning charge valve, the 26th, following horizontal collection case, the 27th, horizontal collection case under the water-cooling wall before the vertical shaft, the 28th, communicating pipe, the 29th, the feed bin front wall, the 30th, before efflux tube bank, the 31st, preceding interior comb bundle, the 32nd, comb bundle in the back, the 33rd, after efflux tube bank, the 34th, wall behind the feed bin, the 35th, front-seat convection bank, the 36th, front-seat tube bank, the 37th, the rear of tube bundle, the 38th, the membrane type screen is horizontal collection case down, the 39th, the front wall supporting plate, the 40th, back wall supporting plate, the 41st, gas approach.The 42nd, horizontal collection case under the burner hearth exhanst gas outlet.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Embodiment 1:
See also Fig. 1, Fig. 2, a kind of CFBB material separator is characterized in importing and exporting the tube bank that formation is beneficial to flue dust current-sharing collision inertial separation at turning channel.Its concrete structure comprises preceding down pass 8, gas approach 6, turning channel 20, feed bin 21, exhanst gas outlet 19, back updraught flue 16 etc., burner hearth 1 rear portion is provided with this material separator, membrane type screen 9 turn back under the guiding flue gas in the centre of burner hearth rear wall 2 and vertical well gas flue antetheca 18 or front-seat convection bank 35 or partially, space between them is separated into preceding down pass 8 and back updraught flue 16, the front portion that the membrane type of turning back under the guiding flue gas shields bifurcated 7 places, lower end is a gas approach 6, the rear portion is an exhanst gas outlet 19, the top of its bifurcated 7 places to dipleg 24 upper ends is turning channel 20 greater than 2/3rds height, and remainder is a feed bin 21. Horizontal collection case 11 or 12 lower central or eccentric radial communication on the upper end that the guiding flue gas is gone up down membrane type screen 9 and the burner hearth exhanst gas outlet, its lower end is a membrane type screen lower end bifurcated 7, and each two row's light pipe is restrained before and after beginning to be branched into by single membrane type screen from bifurcated 7.Before efflux tube bank 30 and preceding in the horizontal spacing gap and the fore-and-aft distance of comb bundle 31 be gas approach 6, before efflux tube bank 30 and preceding in front end and the burner hearth rear wall 2 of comb bundle 31 crooked inclination tube bank is as wall coil before the feed bin 5 in backward near the synthetic row of back two rows, the lower end of preceding wall coil 5 is communicated with preceding horizontal collection case 3 in the boiler.Wall coil 5 inside and outside being constructed by refractory material are sealed into feed bin front wall 29 before the feed bin; In the back comb bundle 32 and after efflux tube bank 33 spacing gap and fore-and-aft distance be exhanst gas outlet 19, as wall coil behind the feed bin 22, the lower end of back wall coil 22 is communicated with the horizontal collection case 23 in middle back of boiler near the interior forward crooked inclination tube bank of the synthetic row of back two rows for its rear end and vertical shaft antetheca 18 or front-seat convection bank 35.Inside and outside being constructed by flame-proof thermal insulation material of wall coil 22 is sealed into wall 34 behind the feed bin behind the feed bin.
The course of work of embodiment 1: fluidized bed combustion is a kind of burning that the bed material carries out under fluidized state, and its fuel can be fossil fuel, agriculture and industry waste and various inferior fuel, biomass combustion or living beings and coal mixed combustion.General big and heavy particle burns in burner hearth 1 bottom, fine particle burns on burner hearth 1 top, the fine particle that is blown burner hearth exhanst gas outlet 10 is turned back under the guiding flue gas and is forced to change co-flow under gas-solid two-phase 180 degree under the effect of membrane type screen 9 and fall into feed bin 21 through the direct inertial separation of down pass 8 bulky grains, flue dust again through gas approach 6 with before efflux tube bank 30 and preceding in comb bundle 31 collide inertial separation twice and fall into feed bin 21, entering the turning channel 20 of dilatation more than one times from gas approach 6 makes the unexpected again dilatation deceleration gravitational settling of a large amount of solid particles in feed bin 21, flue gas during by exhanst gas outlet 19 again respectively with the back in comb bundle 32 and after efflux tube bank 33 twice collision inertial separation in feed bin 21, one time 180 degree racing inertial separation is in feed bin 21, once the little dilatation deceleration gravitational settling from exhanst gas outlet 19 to back updraught flue 16 is in feed bin 21, flue gas goes upward to its exhanst gas outlet 15 through updraught flue 16 low speed and reduces air-flow carrying secretly solid particle greatly, the solid particle that is separated all falls into feed bin 21, by material-returning device dipleg 24, returning charge valve 25 returns burner hearth 1 and repeatedly circulates, and particle fully burns in cyclic process and conducts heat.
The circulation of embodiment 1 low range, local abrasionproof behind the burner hearth exhanst gas outlet, gas approach 6 whole abrasionproofs get final product; Middle and high multiplying power circulation burner hearth exhanst gas outlet 10 and down pass 8 and gas approach 6 whole abrasionproofs, turning channel 20 and feed bin 21 should increase certain altitude respectively.
Embodiment 2:
See also Fig. 3, Fig. 4, be with the difference of embodiment 1: in the bottom of membrane type screen bifurcated 7, two comb bundles before and after on turning channel, forming.Concrete structure is: the bottom of membrane type screen bifurcated 7 is told two and is arranged the spacing tube bank of having loose bowels, the lower end of front-seat tube bank 36 is communicated with horizontal collection case 38 central upper portion under the membrane type screen, rear of tube bundle 37 is restrained 36 1 segment distances from the front row, its lower end and membrane type screen be horizontal collection case 38 rear wall radial communication down, the upper end of the front wall supporting plate 39 of feed bin and burner hearth rear wall are near sealing, its lower end and the outside, dipleg 24 upper ends are near sealing, and its inboard seals with refractory heat-insulating wall; The upper end of the back wall supporting plate 40 of feed bin and vertical shaft 17 or front-seat convection bank 35 near, its lower end and the outside, dipleg 24 upper ends near, its lateral separation is determined according to the number of feed bin 21 and dipleg 24.Collecting case 4 during horizontal collection case 38 can be indulged by the side symmetry of communicating pipe 28 and boiler under the membrane type screen is communicated with.
The course of work of embodiment 2:
Be blown the solid particle of burner hearth exhanst gas outlet 10, turn back under the guiding flue gas under the effect of membrane type screen, force that gas-solid two-phase 180 degree are worsened to be flung feed bin through down pass 8 and make a large amount of solid particle inertial separation in feed bin 21, flue dust through front row tube bank 36 and 37 twice collision of rear of tube bundle make solid particle once more inertial separation fall into feed bin 21, flue dust through gas approach 41 enter that updraught flue 16 dilatations are slowed down and 180 spend the up solid particle of racings once more gravitational settling and inertial separation in feed bin 21, low range circulation flue dust continues natural subsidence through the up solid particle of updraught flue low speed, solid particle in the feed bin is by material-returning device dipleg 24, returning charge valve 25 returns burner hearth 1 and repeatedly circulates, and combustible fully burns in cyclic process and conducts heat.
The circulation of embodiment 2 low ranges only gets final product at the local abrasionproof in burner hearth exhanst gas outlet 10 backs; The circulation of middle and high multiplying power is only made up at down pass 8 and gas approach 41 whole abrasionproofs and with the low temperature cyclone separator, and cyclone separator is installed in the vertical shaft.
Although below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (5)
1. the material separator of a CFBB, comprise down pass and updraught flue that the membrane type screen of turning back on being directed under the flue gas is separated in the past backward, described down pass and updraught flue are installed in the feed bin that has the turning channel expansion space below them by sealing and are communicated with, the front upper part of this material separator is provided with smoke inlet, the upper back of this material separator is provided with exhanst gas outlet, the wall of this material separator is the water-cooling wall that is heated between the upper collecting chamber of described boiler and next part case, the upper end that the membrane type of turning back under the described guiding flue gas shields and the last horizontal collection case of described boiler, it is characterized in that, the lower end that the membrane type of turning back under the described guiding flue gas shields is branched into front two row's light pipes tube banks and back two row's light pipes are restrained, the two row's light pipes tube banks of described front and back two row's light pipes restrain all be bridged on described feed bin above, and forming the gas approach and the exhanst gas outlet of described turning channel respectively, the lower end that the two row's light pipes tube banks of described front and back two row's light pipes are restrained is communicated with horizontal collection case in the described boiler.
2. the material separator of CFBB according to claim 1, it is characterized in that the front end that described front two row's light pipes are restrained and the antetheca of this material separator synthesize the interior backward crooked inclination tube bank of a row as wall coil before the described feed bin near back two rows; The rear end that described back two row's light pipes are restrained and the rear wall of this material separator synthesize the interior forward crooked inclination tube bank of a row as wall coil behind the described feed bin near back two rows.
3. the material separator of CFBB according to claim 1, it is characterized in that the wall of turn back on described guiding flue gas is following membrane type screen and this material separator is any one in full film type wall structure, half membrane wall structure, full light pipe pouring fireproof material structure and the dried refractory wall structure.
4. the material separator of a CFBB, comprise down pass and updraught flue that the membrane type screen of turning back on being directed under the flue gas is separated in the past backward, described down pass and updraught flue are installed in the feed bin that has the turning channel expansion space below them by sealing and are communicated with, the front upper part of this material separator is provided with smoke inlet, the upper back of this material separator is provided with exhanst gas outlet, the wall of this material separator is connection at the upper collecting chamber of described boiler and the water-cooling wall that is heated between the next part case, the upper end that the membrane type of turning back under the described guiding flue gas shields is communicated with the last horizontal collection case of described boiler, it is characterized in that, the lower end that the membrane type of turning back under the described guiding flue gas shields is branched into front-seat tube bank and rear of tube bundle, described front-seat tube bank and rear of tube bundle are positioned on the described turning channel, described front row tube bank its lower end vertically downward is communicated with horizontal collection case under the membrane type screen, and the lower end of described rear of tube bundle is communicated with horizontal collection case under the described membrane type screen.
5. the material separator of CFBB according to claim 4 is characterized in that, described membrane type screen horizontal collection case down is communicated with by the vertical middle collection case of the communicating pipe and the side symmetry of described boiler.
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| CN102062395A (en) * | 2010-12-05 | 2011-05-18 | 王森 | Gas and solid separator of recirculating fluidized bed boiler and boiler containing same |
| CN102221212A (en) * | 2011-07-15 | 2011-10-19 | 李登平 | Circular combustion furnace |
| CN102913899A (en) * | 2012-09-13 | 2013-02-06 | 浙江金锅锅炉有限公司 | Three-in-one furnace of circulating fluidized bed steam, organic heat carrier and hot air |
| WO2015124007A1 (en) * | 2014-02-19 | 2015-08-27 | 王森 | Fluidized bed boiler with integration of multifunctional inertial gravity separators and multiple types of furnaces |
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| WO2015124007A1 (en) * | 2014-02-19 | 2015-08-27 | 王森 | Fluidized bed boiler with integration of multifunctional inertial gravity separators and multiple types of furnaces |
| CN105164469A (en) * | 2014-02-19 | 2015-12-16 | 王森 | Fluidized bed boiler with integration of multifunctional inertial gravity separators and multiple types of furnaces |
| CN111795379A (en) * | 2020-08-07 | 2020-10-20 | 无锡华光环保能源集团股份有限公司 | Circulating fluidized bed boiler for burning biomass |
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