CN101786050A - Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section - Google Patents
Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section Download PDFInfo
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Abstract
A water-cooled or air-cooled high-temperature horizontal cyclone separator of a circulating fluidized bed with an accelerating section relates to a water-cooled or air-cooled high-temperature horizontal cyclone separator. The invention aims to solve the problem that the separator of the existing circulating fluidized bed boiler has large volume, complicated structure and high production cost. In the water-cooled high-temperature horizontal cyclone separator, a first left membrane wall and a right membrane wall are connected with a circular arc membrane wall and the outlet end of a first accelerating section, the inlet end of the first accelerating section is connected with a hearth, the first left and right membrane walls are provided with a first exhaust pipe, the upper and lower ends of the first left membrane wall and the upper and lower ends of the first right membrane wall are communicated with a membrane wall upper header and a first annular header, the upper end of the circular arc membrane wall is communicated with a front/rear wall membrane wall collection upper header, the lower end is communicated with the first annular header; and the structure difference between the water-cooled high-temperature horizontal cyclone separator and the air-cooled high-temperature horizontal cyclone separator is that the membrane wall is changed to the air-cooled water wall. The invention has simple and compact structure and high separation efficiency, and can be used in large-size or medium-size circulating fluidized bed boilers.
Description
Technical field
The present invention relates to the cold high-temperature horizontal cyclone separator of a kind of water-cooled or vapour.
Background technology
In the prior art, the cyclone separator that CFBB adopts mostly is vertical heat insulation-type cyclone separator, and basic structure is cylindrical shape, tangential admission, upward exhaust, and internal placement has scuff-resistant coating and heat insulation layer.This separator is owing to its separative efficiency height, and simple in structure, stable performance is used widely on CFBB, and ruuning situation is good.But also have some problems, mainly contain: bulky, steel using amount is big; Refractory material and insulation material are blocked up; Start-up time is long, and radiation loss is big; The easy coking of material return system; Flame retardant coating is easy to crack, peel off; And flue layout relative complex, the flue gas on-way resistance is than problems such as height.
In order to solve the blocked up problem of high temperature cyclone separator refractory material and insulation material, FosterWheeler company has proposed vertical water-cooled or the cold high temperature cyclone separator of vapour, characteristics are to form the whirlwind tube with fin panel casing, its surface casting refractory material bears high temperature, its volume is reduced, weight saving, it is convenient to support, and start-up time is short.But since its complex process, the cost costliness, and also bad with boiler coupling itself, therefore be difficult in industrial widespread usage.
At the problems referred to above, Finland Ahlstrom company had developed a kind of upward vertical square separator of exhaust in 1992, and the patent (patent No.: EP481438) of having applied for a kind of " water-cooled square cyclone separator " by name.This separator still adopts film water cold wall structure, but its shape adopts square or even polygonal cross-section, and this has simplified the manufacturing and the installation of separator greatly, and realizes that conveniently a plurality of separator assemblies are arranged in juxtaposition, and make structure more compact.But experimental result shows that this separator is because import department's design is unreasonable, and particle quickens not enough and the inner turning that exists of separator, causes flow resistance to become big, and separative efficiency is descended.
In order to solve the problem of above-mentioned particle speed deficiency, Tsing-Hua University has improved the entry mode of last exhaust, and has obtained two utility model patents (patent No. is respectively: ZL93235842.X and ZL99217081.8) according to different inlet forms respectively in China.Experiment shows, these two kinds of separators can improve the speed that particle enters separator, separative efficiency is significantly improved, but separative efficiency is still not as good as the circular cyclone separator of traditional vertical, and the flue gas flow of last discharge air separator and whole boiler is incompatible, makes whole system complicated layout, steel consumption increases, and still has the vertical direction bigger shortcoming that takes up room simultaneously.
Consider the flue gas flow problem, Zhejiang University has obtained the utility model patent (patent No.: ZL 94223276.3) of time vertical square separator of exhaust at home, this separator has consistent with the flue gas flow of whole boiler, the advantage that resistance is little, but it is vertically highly bigger, the design new boiler can be regulated by general layout, but will be subjected to the restriction in space when old boiler is transformed, and restricts it and uses widely.Simultaneously, because the flow process of gas-solid two-phase in the same way, its separative efficiency is lower than the traditional vertical cyclone separator.And exhaust outlet speed is bigger down, and bottom heating surface easily weares and teares.
In the eighties latter stage in last century, Tsing-Hua University has obtained the patent of invention (patent No.: ZL 89103129.4) of the stove inner separator of one three vortex separation chamber, and the structure of this separator all adopts fin panel casing, the surface coverage refractory material.Pre-separation section is preferably arranged, higher separative efficiency, the loopback of material amount is bigger simultaneously, is applicable to middle-size and small-size Industrial Boiler, is mainly used in the following Industrial Boiler of 20t/h at present.But its shortcoming is also apparent in view, takies more furnace inner space exactly, is unfavorable for equipment enlarging.
Foster Wheeler company has obtained the patent of invention (patent No.: ZL 92112600.X) of " horizontal cyclone separator that is used for fluidized-bed reactor " in China.This cyclone separator belongs to the stove inner separator, though can effectively improve the separation and the exhaust effect of particle, taken stove internal upper part space, and this invention only be applicable to the bubbling stove, be unfavorable for maximizing, facts have proved that this horizontal cyclone separator is applied to the following boiler of 20t/h more.
The patent of invention of " combined high-temperature vortex separator " that Northeast China Institute of Electric Power Engineering has (patent No.: ZL 96121228.4), belong to horizontal separator in the stove, main existing problems are that separative efficiency is low, only be equivalent to furnace outlet whirlwind secondary furnace, owing to occupy stove inner top space, and support by water screen tube, be unfavorable for equipment enlarging.Present such boiler capacity is below 20t/h, and The actual running results finds that the flying dust separative efficiency is very low, the internal circulating load deficiency, and boiler thermal output is not high.
The utility model patent of " horizontal square heat-exchanging separator " that Zhejiang University has (patent No.: ZL 00201914.0), practical application seldom, practicality is not high.And have following problems: the long-pending constant inlet that means of (1) entrance section does not have accelerating sections or accelerating sections very short, very big to the separative efficiency influence, the separative efficiency that separative efficiency obtains far below the laboratory in practical engineering application, generally only be applicable to low circulation fluidized bed boiler or boiler improvement, be unfavorable for equipment enlarging; (2) horizontal square arranges that not making full use of centrifugal force realizes particle separation, and its separative efficiency is lower than horizontal cyclone device separative efficiency; (3) square arrangement causes particle directly to wash away the separator rear portion, makes its serious wear; (4) secondary stream appears in square separator corner, causes resistance to increase; (5) bight, separator bottom right is piled up easily and is separated material down, when separator fire again temperature when higher (annotate: in the separator again combustion be universal phenomenon), cause the interior coking of separator easily.
Summary of the invention
The purpose of this invention is to provide a kind of water-cooled or cold high-temperature horizontal cyclone separator of vapour that is applied to recirculating fluidized bed band accelerating sections, existing separator volume is big to solve, complex structure, problem that cost is high.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: the water-cooled high-temperature horizontal cyclone separator of described band accelerating sections is compiled upper collecting chamber and is formed by at least one water-cooled separation chamber, at least two downtake pipes, a plurality of fin panel casing upper collecting chamber, first annular header and front-back wall fin panel casings; The cold high-temperature horizontal cyclone separator of the vapour of described band accelerating sections is made up of the cold separation chamber of at least one vapour, two second exhaust pipes, the cold wall upper collecting chamber of a plurality of membrane type vapour, second annular header and second upper collecting chambers at least; The water-cooled separation chamber is made up of the first left fin panel casing, the first right fin panel casing, circular arc fin panel casing and first accelerating sections; The rear end of the described first left fin panel casing and the first right fin panel casing all is connected with the both sides of circular arc fin panel casing, described first accelerating sections is provided with first arrival end and first port of export, first port of export of first accelerating sections is connected with the front end of the first left fin panel casing and the first right fin panel casing, first arrival end of first accelerating sections is connected with burner hearth, respectively have a downtake pipe installing hole on the first left fin panel casing He on the first right fin panel casing, a downtake pipe that is communicated with the water-cooled separation chamber is housed in each downtake pipe installing hole, the upper end of the first left fin panel casing and the first right fin panel casing all is communicated with corresponding fin panel casing upper collecting chamber, the lower end of the first left fin panel casing and the first right fin panel casing all is communicated with first annular header, the upper end of circular arc fin panel casing is compiled upper collecting chamber with the front-back wall fin panel casing and is communicated with, and the lower end of circular arc fin panel casing is communicated with first annular header; The cold separation chamber of vapour is made up of the cold wall of the first left membrane type vapour, the cold wall of the first right membrane type vapour, the cold wall of circular arc membrane type vapour and second accelerating sections; The rear end of cold wall of the described first left membrane type vapour and the cold wall of the first right membrane type vapour all is connected with the both sides of the cold wall of circular arc membrane type vapour, described second accelerating sections is provided with second arrival end and second port of export, second port of export of second accelerating sections is connected with the front end of the cold wall of the first left membrane type vapour with the cold wall of the first right membrane type vapour, second arrival end of second accelerating sections is connected with burner hearth, respectively have a second exhaust pipe installing hole on the cold wall of the first left membrane type vapour He on the cold wall of the first right membrane type vapour, a second exhaust pipe that is communicated with the cold separation chamber of vapour is housed in each second exhaust pipe installing hole, the upper end of the first cold wall of left membrane type vapour and the cold wall of the first right membrane type vapour all is communicated with the corresponding cold wall upper collecting chamber of membrane type vapour, the lower end of the first cold wall of left membrane type vapour and the cold wall of the first right membrane type vapour all is communicated with second annular header, the upper end of the cold wall of circular arc membrane type vapour is communicated with second upper collecting chamber, and the lower end of the cold wall of circular arc membrane type vapour is communicated with second annular header.
The present invention has following beneficial effect: (1) water-cooled high-temperature horizontal cyclone separator or the cold high-temperature horizontal cyclone separator of vapour are arranged in the furnace outlet and the convection pass turning of CFBB, consistent with flue gas flow, simple in structure, manufacturing, easy for installation, and save the high temperature expansion joint, and boiler entire arrangement compactness, the more vertical cyclone separator of horizontal cyclone separator volume is little, reduce floor space, cost is low.(2) adopt fin panel casing or the cold wall of membrane type vapour to make, the surface coverage fire-resistant abrasion-proof waters material feeding, can prevent to fire in the horizontal cyclone separator again and causes coking in the horizontal cyclone separator, solves adiabatic separator start overlong time problem simultaneously.(3) because the horizontal cyclone separator inlet is provided with accelerating sections and makes full use of centrifugation, actual separation efficient reaches 99.5%, and is suitable with the traditional vertical cyclone separator.(4) can in parallelly use a plurality of water-cooled high-temperature horizontal cyclone separators or the cold high-temperature horizontal cyclone separator of vapour for large-sized boiler, be beneficial to equipment enlarging, range of application is wider.
Description of drawings
Fig. 1 is the main TV structure schematic diagram that comprises the high magnification CFBB of the water-cooled high-temperature horizontal cyclone separator of being with accelerating sections; Fig. 2 is the B-B cutaway view of Fig. 1; Fig. 3 is the C-C cutaway view of Fig. 1; Fig. 4 is the E-E cutaway view of Fig. 2; Fig. 5 is the main TV structure schematic diagram that comprises the high magnification CFBB of the cold high-temperature horizontal cyclone separator of vapour of being with accelerating sections; Fig. 6 is the F-F cutaway view of Fig. 5; Fig. 7 is the G-G cutaway view of Fig. 5; Fig. 8 is the main TV structure schematic diagram that comprises the low circulation fluidized bed boiler of the cold high-temperature horizontal cyclone separator of vapour of being with accelerating sections; Fig. 9 is the main TV structure schematic diagram that comprises the low circulation fluidized bed boiler of the water-cooled high-temperature horizontal cyclone separator of being with accelerating sections; Figure 10 is the main TV structure figure of the water-cooled high-temperature horizontal cyclone separator of the first accelerating sections 20-12 band accelerating sections that is arranged in burner hearth 15 outsides, and Figure 11 is the main TV structure figure of the cold high-temperature horizontal cyclone separator of vapour of the second accelerating sections 50-9 band accelerating sections that is arranged in burner hearth 15 outsides.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1-Fig. 7 present embodiment is described, the water-cooled high-temperature horizontal cyclone separator 20 of the described band accelerating sections of present embodiment is compiled upper collecting chamber 38 and is formed by at least one 20-16 of water-cooled separation chamber, at least two downtake pipe 20-2, a plurality of fin panel casing upper collecting chamber 20-4, the first annular header 20-5 and front-back wall fin panel casings; The cold high-temperature horizontal cyclone separator 50 of the vapour of described band accelerating sections is made up of the cold 50-1 of separation chamber of at least one vapour, two second exhaust pipe 50-2, the cold wall upper collecting chamber of a plurality of membrane type vapour 50-3, the second annular header 50-4 and the second upper collecting chamber 50-5 at least; The 20-16 of water-cooled separation chamber is made up of the first left fin panel casing 20-3, the first right fin panel casing 20-11, circular arc fin panel casing 20-1 and the first accelerating sections 20-12; The rear end of the described first left fin panel casing 20-3 and the first right fin panel casing 20-11 all is connected with the both sides of circular arc fin panel casing 20-1, the described first accelerating sections 20-12 is provided with the first arrival end 20-14 and first port of export 20-15, first port of export 20-15 of the first accelerating sections 20-12 is connected with the front end of the first left fin panel casing 20-3 and the first right fin panel casing 20-11, the first arrival end 20-14 of the first accelerating sections 20-12 is connected with burner hearth 15, the first left fin panel casing 20-3 upward and on the first right fin panel casing 20-11 respectively has a downtake pipe installing hole 20-13, a downtake pipe 20-2 who is communicated with the 20-16 of water-cooled separation chamber is housed in each downtake pipe installing hole 20-13, the upper end of the first left fin panel casing 20-3 and the first right fin panel casing 20-11 all is communicated with corresponding fin panel casing upper collecting chamber 20-4, the lower end of the first left fin panel casing 20-3 and the first right fin panel casing 20-11 all is communicated with the first annular header 20-5, the upper end of circular arc fin panel casing 20-1 is compiled upper collecting chamber 38 with the front-back wall fin panel casing and is communicated with, and the lower end of circular arc fin panel casing 20-1 is communicated with the first annular header 20-5; The cold 50-1 of separation chamber of vapour is made up of the cold wall 50-6 of the first left membrane type vapour, the cold wall 50-7 of the first right membrane type vapour, the cold wall 50-8 of circular arc membrane type vapour and the second accelerating sections 50-9; The rear end of cold wall 50-6 of the described first left membrane type vapour and the cold wall 50-7 of the first right membrane type vapour all is connected with the both sides of the cold wall 50-8 of circular arc membrane type vapour, the described second accelerating sections 50-9 is provided with the second arrival end 50-10 and second port of export 50-11, second port of export 50-11 of the second accelerating sections 50-9 is connected with the front end of the cold wall 50-7 of the first right membrane type vapour with the cold wall 50-6 of the first left membrane type vapour, the second arrival end 50-10 of the second accelerating sections 50-9 is connected with burner hearth 15, the cold wall 50-6 of the first left membrane type vapour upward and on the cold wall 50-7 of the first right membrane type vapour respectively has a second exhaust pipe installing hole 50-12, a second exhaust pipe 50-2 who is communicated with the cold 50-1 of separation chamber of vapour is housed in each second exhaust pipe installing hole 50-12, the upper end of cold wall 50-6 of the first left membrane type vapour and the cold wall 50-7 of the first right membrane type vapour all is communicated with the corresponding cold wall upper collecting chamber of membrane type vapour 50-3, the lower end of cold wall 50-6 of the first left membrane type vapour and the cold wall 50-7 of the first right membrane type vapour all is communicated with the second annular header 50-4, the upper end of the cold wall 50-8 of circular arc membrane type vapour is communicated with the second upper collecting chamber 50-5, the lower end of the cold wall 50-8 of circular arc membrane type vapour is communicated with the second annular header 50-4, and the second upper collecting chamber 50-5 communicates with the upper drum 17 of boiler.
The quantity of the quantity of the 20-16 of water-cooled separation chamber and the cold 50-1 of separation chamber of vapour is determined according to the size of boiler capacity.
The cigarette speed W1=16-20m/s of the arrival end 20-14 of the first accelerating sections 20-12 in the present embodiment, the cigarette speed W2=25-30m/s of the port of export 20-15 of the first accelerating sections 20-12.
The specific embodiment two: present embodiment is described in conjunction with Fig. 3, the present embodiment described first left fin panel casing 20-3, the first right fin panel casing 20-11 and circular arc fin panel casing 20-1 are the fin panel casing that the surface coverage fire-resistant abrasion-proof waters material feeding, can prevent the separator inter deterioration, prevent high-temperature coking.Inner diameter d 1=(0.75-1.0) R1 of the downtake pipe 20-2 of present embodiment, height h1=(0.5-0.75) R1 of downtake pipe 20-2, distance L 1=(0.75-1.0) R1 of the port of export 20-15 of the centre-to-centre spacing first accelerating sections 20-12 of downtake pipe 20-2, R1 are the horizontal range of the centre-to-centre spacing circular arc fin panel casing 20-1 inner surface of downtake pipe 20-2.So be provided with, separative efficiency reaches 99.5%, and isolation resistance is 1000-1200Pa.Other is identical with the specific embodiment one.
The specific embodiment three: present embodiment is described in conjunction with Fig. 7, the cold wall 50-6 of the present embodiment described first left membrane type vapour, the cold wall 50-7 of the first right membrane type vapour and the cold wall 50-8 of circular arc membrane type vapour are the cold wall of membrane type vapour that the surface coverage fire-resistant abrasion-proof waters material feeding, can prevent the separator inter deterioration, prevent high-temperature coking.Inner diameter d 2=(0.75-1.0) R2 of the second exhaust pipe 50-2 of present embodiment, height h2=(0.5-0.75) R2 of second exhaust pipe 50-2, distance L 2=(0.75-1.0) R2 of the port of export 50-11 of the centre-to-centre spacing second accelerating sections 50-9 of described second exhaust pipe 50-2, R2 are the horizontal range of the cold wall 50-8 of the centre-to-centre spacing circular arc membrane type vapour inner surface of second exhaust pipe 50-2.So be provided with, separative efficiency reaches 99.5%, and isolation resistance is 1000-1200Pa.Other is identical with the specific embodiment one.
The specific embodiment four: in conjunction with Fig. 3 present embodiment is described, the quantity of the 20-16 of water-cooled separation chamber of present embodiment is two, is symmetrical arranged side by side about two 20-16 of water-cooled separation chamber, and two 20-16 of water-cooled separation chamber are connected with the first accelerating sections 20-12.So be provided with, can improve separative efficiency, separative efficiency reaches 99.5%.Other is identical with the specific embodiment one or two.
The specific embodiment five: in conjunction with Fig. 7 present embodiment is described, the quantity of the cold 50-1 of separation chamber of the vapour of present embodiment is two, is symmetrical arranged side by side about two cold 50-1 of separation chamber of vapour, and two cold 50-1 of separation chamber of vapour are connected with the second accelerating sections 50-9.So be provided with, can improve separative efficiency, separative efficiency reaches 99.5%.Other is identical with the specific embodiment one or three.
The specific embodiment six: in conjunction with Fig. 1-Fig. 4 present embodiment is described, present embodiment is that the specific embodiment one described water-cooled high-temperature horizontal cyclone separator is applied to a specific embodiment on the high magnification CFBB; The high magnification CFBB that is provided with the water-cooled high-temperature horizontal cyclone separator of present embodiment is by burner hearth 15, feeder 10, ignition under bed system 1, air compartment 3, secondary air box 7, feeding back device 6, burner hearth front water wall next part case 4, burner hearth front wall fin panel casing 11, upper drum 17, burner hearth left side wall fin panel casing 13, left side wall fin panel casing next part case 8, burner hearth right-side wall fin panel casing 14, right-side wall fin panel casing next part case 9, wall fin panel casing next part case 2 behind the burner hearth, wall fin panel casing upper collecting chamber 54 behind the burner hearth, the downcomer 5 of water-cooling wall next part case around the burner hearth, wall fin panel casing 12 behind the burner hearth, left side wall fin panel casing upper collecting chamber 34, right-side wall fin panel casing upper collecting chamber 55, air distribution plate 35, both walls fin panel casing upper collecting chamber carbonated drink fairlead 16, the front-back wall fin panel casing compiles the carbonated drink fairlead 18 of upper collecting chamber 38, steam fairlead 19, feed pipe 58, the water-cooled high-temperature horizontal cyclone separator 20 of band accelerating sections, economizer inlet collection case 28, economizer 27, economizer exit collection case 26, low temperature superheater inlet collection case 25, low temperature superheater 23, attemperator 24, high temperature superheater 22, high temperature superheater outlet collection case 21, air preheater 29, ash bucket 56, ash releasing tube 33, tube connector 57, separator left side downcomer 31 and separator right side downcomer 32 are formed; Described body of heater is surrounded by insulation furnace wall 39, front end in the body of heater is a burner hearth 15, rear end in the body of heater is an exhaust gases passes 51, the below of burner hearth 15 is an air compartment 3, burner hearth 15 is communicated with by air distribution plate 35 with air compartment 3, feeder 10 is arranged on the place ahead of burner hearth 15 outsides, the lower end of feeder 10 is communicated with the combustion chamber of burner hearth 15, air preheater 29 is arranged in the exhaust gases passes 51 and is positioned at the lower end of exhaust gases passes 51, a wind passage 52 of air preheater 29 is communicated with ignition under bed system 1, ignition under bed system 1 is arranged on the porch of air compartment 3, the secondary air channel 53 of air preheater 29 secondary air box 7 outer with being arranged on burner hearth 15 is communicated with, the secondary air channel 36 of secondary air box 7 is communicated with burner hearth 15, burner hearth front wall fin panel casing 11, wall fin panel casing 12 behind the burner hearth, burner hearth left side wall fin panel casing 13 and burner hearth right-side wall fin panel casing 14 are separately positioned on the front end in the burner hearth 15 successively, the rear end, left end and right-hand member, the lower end of burner hearth front wall fin panel casing 11 is communicated with burner hearth front water wall next part case 4, the upper end of burner hearth front wall fin panel casing 11 is compiled upper collecting chamber 38 with the front-back wall fin panel casing and is communicated with, the lower end of wall fin panel casing 12 is communicated with wall fin panel casing next part case 2 behind the burner hearth behind the burner hearth, the upper end of wall fin panel casing 12 is communicated with wall fin panel casing upper collecting chamber 54 behind the burner hearth behind the burner hearth, back wall fin panel casing upper collecting chamber 54 compiles upper collecting chamber 38 by tube connector 57 and front-back wall fin panel casing and is communicated with, the lower end of burner hearth left side wall fin panel casing 13 is communicated with left side wall fin panel casing next part case 8, the upper end of burner hearth left side wall fin panel casing 13 is communicated with left side wall fin panel casing upper collecting chamber 34, the lower end of burner hearth right-side wall fin panel casing 14 is communicated with right-side wall fin panel casing next part case 9, the upper end of burner hearth right-side wall fin panel casing 14 is communicated with right-side wall fin panel casing upper collecting chamber 55, the water-cooled high-temperature horizontal cyclone separator 20 of band accelerating sections is arranged on the smoke outlet of burner hearth 15, the exhaust outlet outside of the downtake pipe 20-2 of the water-cooled high-temperature horizontal cyclone separator 20 of band accelerating sections and separator external wall fin panel casing 20-8 are (promptly by the first left fin panel casing 20-3, the first right fin panel casing 20-11, the circular arc fin panel casing 20-1 and the first accelerating sections 20-12 constitute) formation exhaust outlet flue 20-6, fin panel casing upper collecting chamber 20-4 is communicated with the carbonated drink fairlead 20-9 of the described water-cooled high-temperature horizontal cyclone separator 20 of end disposed thereon, the lower end of the water-cooled high-temperature horizontal cyclone separator 20 of band accelerating sections is connected with the upper end of the ash bucket 56 that is arranged on burner hearth 15 outsides, the lower end of ash bucket 56 is connected with the upper end of ash releasing tube 33, the lower end of ash releasing tube 33 is communicated with the upper end of feeding back device 6, the lower end of feeding back device 6 is communicated with the lower end of burner hearth 15, be disposed with high temperature superheater 22 in the exhaust gases passes 51 from top to bottom, low temperature superheater 23 and economizer 27, the inlet of economizer 27 is communicated with economizer inlet collection case 28, the outlet of economizer 27 is communicated with economizer exit collection case 26, economizer exit collection case 26 is communicated with by feed pipe 58 with upper drum 17, the outlet of high temperature superheater 22 is communicated with high temperature superheater outlet collection case 21, the inlet of high temperature superheater 22 is communicated with the outlet of low temperature superheater 23 by attemperator 24, low temperature superheater inlet collection case 25 is communicated with upper drum 17 by steam fairlead 19, high temperature superheater 22 is arranged on the top of air preheater 29, burner hearth front water wall next part case 4, left side wall fin panel casing next part case 8, wall fin panel casing next part case 2 all is communicated with the downcomer 5 of water-cooling wall next part case around the burner hearth behind right-side wall fin panel casing next part case 9 and the burner hearth, left side wall fin panel casing upper collecting chamber 34 and right-side wall fin panel casing upper collecting chamber 55 all are communicated with upper drum 17 by both walls fin panel casing upper collecting chamber carbonated drink fairlead 16, wall fin panel casing 12 compiles the front-back wall fin panel casing and compiles upper collecting chamber 38 backs and be communicated with upper drum 17 by carbonated drink fairlead 18 behind burner hearth front wall fin panel casing 11 and the burner hearth, and downcomer 31 and separator right side downcomer 32 are communicated with the first annular header 20-5 of described water-cooled high-temperature horizontal cyclone separator 20 respectively on the left of the separator.The water-cooled high-temperature horizontal cyclone separator efficient of this CFBB reaches more than 99.5%, and circulating ratio reaches 20-50, and boiler thermal output reaches more than 90%, and isolation resistance is 1000-1200Pa.Other composition and annexation are identical with the specific embodiment one.
The specific embodiment seven: in conjunction with Fig. 5 Fig. 7 present embodiment is described, present embodiment is that the cold high-temperature horizontal cyclone separator of vapour is applied to a specific embodiment on the high magnification CFBB; Present embodiment and the specific embodiment six differences are: the horizontal cyclone separator of present embodiment is the cold high-temperature horizontal cyclone separator 50 of vapour of band accelerating sections, and all fin panel casings all change the cold wall of membrane type vapour in the separator.Upper drum 17 is drawn saturated vapor and be pooled to the second annular header 50-4 after the second upper collecting chamber 50-5 and the cold wall upper collecting chamber of membrane type vapour 50-3 is entered the cold high-temperature horizontal cyclone separator 50 of vapour, introduces in the low temperature superheaters inlet collection casees 25 by separator left side downcomer 31 and separator right side downcomer 32 then.The cigarette speed W1=16-20m/s of the arrival end 50-10 of the second accelerating sections 50-8, the cigarette speed W2=25-30m/s of the port of export 50-11 of the second accelerating sections 50-9.The cold high-temperature horizontal cyclone separator efficient of the vapour of this CFBB reaches more than 99.5%, and circulating ratio reaches 20-50, and boiler thermal output reaches more than 90%, and isolation resistance is 1000-1200Pa.
The specific embodiment eight: in conjunction with Fig. 8 present embodiment is described, present embodiment and the specific embodiment seven differences are: present embodiment is to be applied to vapour cold horizontal type cyclone separator on the low circulation fluidized bed boiler or a specific embodiment of other boiler improvements; The cigarette speed W1=8-10m/s of the arrival end 50-10 of the second accelerating sections 50-9, the cigarette speed W2=16-20m/s of the port of export 50-11 of the second accelerating sections 50-9.This kind of low circulation fluidized bed boiler, separator separative efficiency are 75-90%, and circulating ratio is 3-10, and isolation resistance is 500-600Pa.
The specific embodiment nine: in conjunction with Fig. 9 present embodiment is described, the difference of the present embodiment and the specific embodiment six is: present embodiment is that the water-cooled horizontal cyclone separator is applied to a specific embodiment on the low circulation fluidized bed boiler or on other boiler improvements; The cigarette speed W1=8-10m/s of the arrival end 20-14 of the first accelerating sections 20-12, the cigarette speed W2=16-20m/s of the port of export 20-15 of the first accelerating sections 20-12.This kind of low circulation fluidized bed boiler, separator separative efficiency are 75-90%, and circulating ratio is 3-10, and isolation resistance is 500-600Pa.
The specific embodiment ten: present embodiment is described in conjunction with Figure 10, the difference of the present embodiment and the specific embodiment six is: the first accelerating sections 20-12 of water-cooled high-temperature horizontal cyclone separator is arranged in the water-cooled high-temperature horizontal cyclone separator 20 of band accelerating sections of furnace outlet, and the bottom of the first accelerating sections 20-12 is adopted and covered fire-resistant abrasion-proof on the heat-resisting steel sheet and plate 59 and water material feeding and make.The water-cooled high-temperature horizontal cyclone separator efficient of this CFBB reaches more than 99.5%, and circulating ratio reaches 20-50, and boiler thermal output reaches more than 90%, and isolation resistance is 1000-1200Pa.Be applicable to medium-sized and large circulating fluidized bed boiler.
The specific embodiment 11: present embodiment is described in conjunction with Figure 11, the difference of the present embodiment and the specific embodiment seven is: the second accelerating sections 50-9 of the cold high-temperature horizontal cyclone separator of vapour is arranged in the cold high-temperature horizontal cyclone separator 50 of vapour of band accelerating sections of furnace outlet, and the bottom of the second accelerating sections 50-9 is adopted and covered fire-resistant abrasion-proof on the heat-resisting steel sheet and plate 59 and water material feeding and make.The cold high-temperature horizontal cyclone separator efficient of the vapour of this CFBB reaches more than 99.5%, and circulating ratio reaches 20-50, and boiler thermal output reaches more than 90%, and isolation resistance is 1000-1200Pa.Be applicable to medium-sized and large circulating fluidized bed boiler.
The researcher in this field can make further improvement and change on this basis, but not breaking away under the essence prerequisite of the present invention, all drops in protection scope of the present invention.
Claims (10)
1. the water-cooled of a recirculating fluidized bed band accelerating sections or the cold high-temperature horizontal cyclone separator of vapour, the water-cooled high-temperature horizontal cyclone separator (20) of described band accelerating sections compiles upper collecting chamber (38) by at least one water-cooled separation chamber (20-16), at least two downtake pipes (20-2), a plurality of fin panel casing upper collecting chamber (20-4), first annular header (20-5) and front-back wall fin panel casing and forms; The cold high-temperature horizontal cyclone separator of the vapour of described band accelerating sections (50) is made up of the cold separation chamber of at least one vapour (50-1), two second exhaust pipes (50-2), the cold wall upper collecting chamber of a plurality of membrane type vapour (50-3), second annular header (50-4) and second upper collecting chamber (50-5) at least; It is characterized in that: water-cooled separation chamber (20-16) is made up of the first left fin panel casing (20-3), the first right fin panel casing (20-11), circular arc fin panel casing (20-1) and first accelerating sections (20-12); The rear end of the described first left fin panel casing (20-3) and the first right fin panel casing (20-11) all is connected with the both sides of circular arc fin panel casing (20-1), described first accelerating sections (20-12) is provided with first arrival end (20-14) and first port of export (20-15), first port of export (20-15) of first accelerating sections (20-12) is connected with the front end of the first left fin panel casing (20-3) and the first right fin panel casing (20-11), first arrival end (20-14) of first accelerating sections (20-12) is connected with burner hearth (15), the first left fin panel casing (20-3) upward and on the first right fin panel casing (20-11) respectively has a downtake pipe installing hole (20-13), a downtake pipe (20-2) that is communicated with water-cooled separation chamber (20-16) is housed in each downtake pipe installing hole (20-13), the upper end of the first left fin panel casing (20-3) and the first right fin panel casing (20-11) all is communicated with corresponding fin panel casing upper collecting chamber (20-4), the lower end of the first left fin panel casing (20-3) and the first right fin panel casing (20-11) all is communicated with first annular header (20-5), the upper end of circular arc fin panel casing (20-1) is compiled upper collecting chamber (38) with the front-back wall fin panel casing and is communicated with, and the lower end of circular arc fin panel casing (20-1) is communicated with first annular header (20-5); The cold separation chamber of vapour (50-1) is made up of the first cold wall of left membrane type vapour (50-6), the first cold wall of right membrane type vapour (50-7), the cold wall of circular arc membrane type vapour (50-8) and second accelerating sections (50-9); The rear end of the described first cold wall of left membrane type vapour (50-6) and the first cold wall of right membrane type vapour (50-7) all is connected with the both sides of the cold wall of circular arc membrane type vapour (50-8), described second accelerating sections (50-9) is provided with second arrival end (50-10) and second port of export (50-11), second port of export (50-11) of second accelerating sections (50-9) is connected with the front end of the first cold wall of left membrane type vapour (50-6) and the first cold wall of right membrane type vapour (50-7), second arrival end (50-10) of second accelerating sections (50-9) is connected with burner hearth (15), the first cold wall of left membrane type vapour (50-6) upward and on the first cold wall of right membrane type vapour (50-7) respectively has a second exhaust pipe installing hole (50-12), a second exhaust pipe (50-2) that is communicated with the cold separation chamber of vapour (50-1) is housed in each second exhaust pipe installing hole (50-12), the upper end of the first cold wall of left membrane type vapour (50-6) and the first cold wall of right membrane type vapour (50-7) all is communicated with the corresponding cold wall upper collecting chamber of membrane type vapour (50-3), the lower end of the first cold wall of left membrane type vapour (50-6) and the first cold wall of right membrane type vapour (50-7) all is communicated with second annular header (50-4), the upper end of the cold wall of circular arc membrane type vapour (50-8) is communicated with second upper collecting chamber (50-5), and the lower end of the cold wall of circular arc membrane type vapour (50-8) is communicated with second annular header (50-4)
2. the water-cooled of recirculating fluidized bed band accelerating sections according to claim 1 or the cold high-temperature horizontal cyclone separator of vapour is characterized in that: the described first left fin panel casing (20-3), the first right fin panel casing (20-11) and circular arc fin panel casing (20-1) are the fin panel casing that the surface coverage fire-resistant abrasion-proof waters material feeding.
3. the water-cooled of recirculating fluidized bed band accelerating sections according to claim 1 or the cold high-temperature horizontal cyclone separator of vapour is characterized in that: the described first cold wall of left membrane type vapour (50-6), the first cold wall of right membrane type vapour (50-7) and the cold wall of circular arc membrane type vapour (50-8) are the cold wall of membrane type vapour that the surface coverage fire-resistant abrasion-proof waters material feeding.
4. the water-cooled of recirculating fluidized bed band accelerating sections according to claim 1 and 2 or the cold high-temperature horizontal cyclone separator of vapour, it is characterized in that: the quantity of water-cooled separation chamber (20-16) is two, be symmetrical arranged side by side about two water-cooled separation chambers (20-16), two water-cooled separation chambers (20-16) are connected with first accelerating sections (20-12).
5. according to the water-cooled or the cold high-temperature horizontal cyclone separator of vapour of claim 1 or 3 described recirculating fluidized bed band accelerating sections, it is characterized in that: the quantity of the cold separation chamber of vapour (50-1) is two, be symmetrical arranged side by side about two cold separation chambers of vapour (50-1), two cold separation chambers of vapour (50-1) are connected with second accelerating sections (50-9).
6. the water-cooled of recirculating fluidized bed band accelerating sections according to claim 1 or the cold high-temperature horizontal cyclone separator of vapour, it is characterized in that: inner diameter d 1=(0.75-1.0) R1 of downtake pipe (20-2), height h1=(0.5-0.75) R1 of downtake pipe (20-2), R1 are the horizontal range of centre-to-centre spacing circular arc fin panel casing (20-1) inner surface of downtake pipe (20-2)
7. the water-cooled of recirculating fluidized bed band accelerating sections according to claim 1 or the cold high-temperature horizontal cyclone separator of vapour, it is characterized in that: inner diameter d 2=(0.75-1.0) R2 of second exhaust pipe (50-2), height h2=(0.5-0.75) R2 of second exhaust pipe (50-2), R2 are the horizontal range of the cold wall of centre-to-centre spacing circular arc membrane type vapour (50-8) inner surface of second exhaust pipe (50-2).
8. the water-cooled of recirculating fluidized bed band accelerating sections according to claim 6 or the cold high-temperature horizontal cyclone separator of vapour is characterized in that: distance L 1=(0.75-1.0) R1 of the port of export (20-15) of centre-to-centre spacing first accelerating sections (20-12) of described downtake pipe (20-2).
9. the water-cooled of recirculating fluidized bed band accelerating sections according to claim 7 or the cold high-temperature horizontal cyclone separator of vapour is characterized in that: distance L 2=(0.75-1.0) R2 of the port of export (50-11) of centre-to-centre spacing second accelerating sections (50-9) of described second exhaust pipe (50-2).
10. the water-cooled of recirculating fluidized bed band accelerating sections according to claim 1 or the cold high-temperature horizontal cyclone separator of vapour, it is characterized in that: described first accelerating sections (20-12) is arranged in the water-cooled high-temperature horizontal cyclone separator (20) of band accelerating sections of furnace outlet, described second accelerating sections (50-9) is arranged in the cold high-temperature horizontal cyclone separator of vapour (50) of band accelerating sections of furnace outlet, and the bottom of the bottom of first accelerating sections (20-12) and second accelerating sections (50-9) is all adopted heat-resisting steel sheet and plate (59) to go up to cover fire-resistant abrasion-proof to water material feeding and made.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103081245A CN101786050B (en) | 2009-10-09 | 2009-10-09 | Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section |
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| CN2009103081245A CN101786050B (en) | 2009-10-09 | 2009-10-09 | Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section |
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| CN101786050B CN101786050B (en) | 2011-04-06 |
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