CN204853459U - Fuel or fire natural gas and fire offal integration boiler - Google Patents
Fuel or fire natural gas and fire offal integration boiler Download PDFInfo
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- CN204853459U CN204853459U CN201520612922.8U CN201520612922U CN204853459U CN 204853459 U CN204853459 U CN 204853459U CN 201520612922 U CN201520612922 U CN 201520612922U CN 204853459 U CN204853459 U CN 204853459U
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Abstract
Fuel or fire natural gas and fire offal integration boiler belongs to the fuel or fires the natural gas and burning offal discarded object boiler field. There are slagging scorification, coking problem at fluidized bed pot furnace combustion together in order to solve the fuel or the natural gas and offal. Fuel or the exhanst gas outlet no. 1 that fires natural gas combustion chamber are in proper order with later fuel or fire the first and second cooling chamber in natural gas combustion chamber and communicate with each other, the fluidized bed combustion room exports and fluidized bed combustion room later is first and the second cooling chamber communicates with each other, first and the second cooling chamber in fluidized bed combustion room separates through diaphragm type wall dividing wall no. 1, the lower extreme of cooling chamber diaphragm type wall dividing wall no. 1 is connected with U type groove separator, fluidized bed combustion room second cooling chamber and fuel or the exhanst gas outlet no. 2 that fires natural gas second cooling chamber communicate with each other, export window and first and the second convection current calandria of fluidized bed combustion room second cooling chamber communicate with each other, second convection current calandria communicates with each other with economizer and energy -saving appliance. This boiler is used for fuel or the natural gas and the burning of offal discarded object.
Description
Technical field
The utility model relates to fuel oil or combustion natural gas and the offal integrated boiler that burns, and belongs to fuel oil or combustion gas and tobacco stem waste field of boilers of burning.
Background technology
Offal the like waste is the accessory substance of tobacco industry, is the primary raw material producing false smoke, and national policy requires to destroy.Redrying enterprise taked the mode such as landfill or burning to make Disposal more in the past, easily caused severe contamination, welding to the air of periphery, water, soil, and formed the leak in great potential safety hazard and tobacco monopolization supervision.Tobacco redrying processing needs to consume a large amount of fuel, causes production cost to increase, if adopt offal to provide steam required for production as fuel to redrying enterprise, develops a circular economy, be vast redrying enterprise must in the face of and be badly in need of the problem of solution.Some redrying enterprises adopt mode chain furnace combustion offal for this reason, found that the offal incomplete combustion on fire grate, in black, reason is that the offal moisture absorption is very competent, and after placing a period of time in the open, moisture content reaches 23 ~ 25%, offal sends into chain furnace combustion, found that offal is only at stoker surface ignition, and missing of ignition below, cause burning not to the utmost; In addition, also find that inboard wall of burner hearth salification, dust stratification are extremely serious, this is because containing a large amount of potassium and chlorine (potassium application is caused) in offal, generate a large amount of KCl(fusing point 776 DEG C in combustion process), be deposited on burner hearth and back-end surfaces.Some enterprises adopt first gasifies offal in gasification furnace, and then combustion gasification gas, and found that offal gasification produces a large amount of tar, blocking pipe and burner nozzle, finally lead to the failure.So; people contemplate and adopt burning in circulating fluid bed boiler offal to be perhaps a kind of feasible way; the patent No. is that the utility model patent of ZL201420555405.7 discloses a kind of offal fluidized-bed combustion boiler; this boiler comprises body of heater; cyclone separator and smoke exhaust pipe; body of heater is divided into again main chamber and subsidiary combustion chamber; primary combustor chamber exit connects subsidiary combustion chamber; subsidiary combustion chamber is connected with cyclone separator; in main chamber except the First air under layout air distribution plate, also arrange secondary air channel and coal-water slurry nozzle.Following table 1, table 2 are a kind of ash component and ash fusion point analysis data of offal.
The ash component analysis of table 1 offal
| K 2O | CaO | Cl | SO 3 | Fe 2O 3 | MgO | SiO 2 | Na 2O | Al 2O 3 | MnO 2 | P 2O 5 |
| 44.8 | 17.27 | 15.03 | 6.23 | 1.16 | 5.83 | 2.32 | 0.75 | 0.98 | 0.21 | 4.42 |
The ash fusion point of table 2 offal
| Deformation temperature DT | Softening temperature ST | Hemispherical fusion temperature ST | Flowing temperature FT |
| 729 | 738 | 761 | 780 |
From above-mentioned table 1, table 2, K in the ash component of offal
2it is 15.03% that O content reaches 44.8%, Cl content, and in ash fusion point, softening temperature is 738 DEG C, so offal is very easy to slagging scorification, coking and dust stratification in combustion.The chain furnace run and the operation result of CFBB demonstrate this point.So can infer, disclosed in above-mentioned utility model patent, offal fluidized-bed combustion boiler will exist following problem: easily coking in (1) separator, because temperature far exceedes the softening temperature of ash in separator; (2) return material valve for separator returns ash difficulty, because arrange the 3rd air inlet on dipleg, grey temperature is raised, and viscosity strengthens, and causes back ash difficulty; (3) coking, slagging scorification is easy in burner hearth.Because arrange cool water mixture burning nozzle in main chamber, water coal slurry burner flame kernel temperature, generally between 1200 ~ 1300 DEG C, has far exceeded the flowing temperature of offal ash fusion point, and ash erosion, coking are inevitable.
The utility application that application number is 201410296765.4, publication number is CN104033884.A discloses " a kind of living beings are offal boiler particularly ", and this offal boiler adopts three burner hearths, multi units tube to shield and multiple material returning device device.The CFBB of the burning smoke stalk designed by this patent application, is auxiliary fuel with coal, in actual application, finds to there is following problem:
1) because offal ash fusion point is low, the grey viscosity of returning charge causes greatly loopback not smooth, returning charge passage often blocks;
2) due to revert system cisco unity malfunction, emulsion zone carry heat is only out controlled bed temperature by First air by lower furnace portion emulsion zone temperature, and cause emulsion zone temperature to raise, very difficult control in the reasonable scope;
3) when bed temperature is more than 900 DEG C, be no more than 20 hours running time, emulsion zone just serious coking in stove, dilute-phase zone water-cooling wall Serious Slagging, needs blowing out to clear up;
4) afterbody dust stratification is serious, and boiler runs under 35% load, and exhaust gas temperature reaches 140 DEG C, and illustrate that afterbody dust stratification is abnormal serious, boiler thermal output significantly reduces;
5) boiler feeding point is zone of positive pressure, needs, by air-introduced machine, feeding point is pulled into negative pressure, otherwise will outwards smolder, during actual motion, under 35% load, furnace outlet negative pressure is-438Pa, if oepration at full load, furnace outlet will reach-800Pa ~-1000Pa, increase air-introduced machine power consumption.
As known from Table 2, the ash fusion point of offal is very low, wants boiler safety stable operation, must adopt an effective measure and improve the ash fusion point of offal, ignition temperature controlled in lower temperature range, otherwise it be impossible for will realizing safe and stable operation simultaneously.Because fluid bed running temperature is generally low than the softening temperature of fuel ash fusing point 200 DEG C, and the softening temperature of offal ash only has 738 DEG C, by this principle, boiler should run at 538 DEG C, and this can not realize.For this reason, suitable additive or bed material must be added to improve the ash fusion point of offal.
In addition, the design principle of offal boiler how to control the dust stratification problem of lower furnace portion combustion zone temperature, furnace exit temperature and back-end surfaces well.
Increasing along with haze weather, administration request by 10t/h(containing) following coal-burning boiler eliminates gradually, to the end of the year 2017, will eliminate 160,000 coal-burned industrial boilers, replacing is oil burning boiler, combustion natural gas boiler, biomass boiler and electric boiler etc.Therefore, some redrying enterprises propose the thinking with natural gas or light oil and offal multifuel combustion because single fire offal can not meet Redrying Factory use vapour demand.If by natural gas or light oil and offal multifuel combustion; just must consider the greatest differences of two kinds of fuel; natural gas or light diesel fuel combustion flame central temperature are generally between 1500 ~ 1800 DEG C; considerably beyond the flowing temperature of offal ash fusion point; so, oil or natural gas and offal must be burnt respectively, not interfere with each other; after burning, after heat exchange cooling, two strands of flue gases collaborate to carry out heat exchange to afterbody again, just can avoid above-mentioned problem, the problem includes: problems such as slagging scorification, cokings.
Summary of the invention
The purpose of this utility model is to provide a kind of fuel oil or combustion natural gas and burning smoke and obstructs integrated boiler, to solve fuel oil or natural gas exist slagging scorification, coking together with offal problem in fluidized-bed combustion boiler combustion.
Integrated boiler is obstructed in fuel oil of the present utility model or combustion natural gas and burning smoke, utilizes fuel oil or natural gas and offal independent burning in two combustion chambers, is mixed into afterbody waste heat boiler again after burning after heat exchange is lowered the temperature.Fuel oil or combustion natural gas boiler are by the design of room burner, and burning smoke stalk boiler is by low circulation fluidized bed biomass boiler design.
Realize above-mentioned purpose, the technical solution of the utility model is:
Integrated boiler is obstructed in fuel oil of the present utility model or combustion natural gas and burning smoke, comprises fuel oil or fires combustion of natural gas room, fluidized bed combustion chamber, burner, fluid bed emulsion zone, fluid bed dilute-phase zone, many pipe layings, high speed bed air distribution plate, two low speed bed air distribution plates, high speed bed air compartment, two low speed bed air compartments, multiple overfiren air port, exhanst gas outlet one, fluidized bed combustion chamber exports, exhanst gas outlet two, exit window, slag-drip opening, fluidized bed combustion chamber first cooling chamber, cooling chamber membrane wall dividing wall one, fluidized bed combustion chamber second cooling chamber, fuel oil or combustion combustion of natural gas room first cooling chamber, cooling chamber membrane wall dividing wall two, evaporating heating surface, fuel oil or combustion combustion of natural gas room second cooling chamber, steamdrum, water drum, multiple pulse soot blower, first convection calandria, convection calandria dividing wall, second convection calandria, tail flue gas passage, economizer, energy-saving appliance, storage tank, water circulating pump, an air blast, post-blast machine, sack cleaner, air-introduced machine, flue damper, chimney, U-type groove separator, feed back nozzle, ash returning tube, material inlet, fin panel casing one, header one, header two, fin panel casing two,
Described fuel oil or combustion combustion of natural gas room are near the left side being arranged on fluidized bed combustion chamber, described fuel oil or combustion combustion of natural gas room are configured with burner, the Hou Qiang upper end of fuel oil or combustion combustion of natural gas room is provided with exhanst gas outlet one, be provided with fuel oil or combustion combustion of natural gas room first cooling chamber and fuel oil after the exhanst gas outlet of fuel oil or combustion combustion of natural gas room successively or fire combustion of natural gas room second cooling chamber, described fuel oil or combustion combustion of natural gas room first cooling chamber and fuel oil or combustion combustion of natural gas room second cooling chamber are separated by cooling chamber membrane wall dividing wall two, communicate bottom fuel oil or combustion combustion of natural gas room first cooling chamber and fuel oil or combustion combustion of natural gas room second cooling chamber, the upper end of described cooling chamber membrane wall dividing wall two is communicated with steamdrum, lower end is communicated with water drum by header one, evaporating heating surface is furnished with in fuel oil or combustion combustion of natural gas room second cooling chamber, the top of fuel oil or combustion combustion of natural gas room second cooling chamber is provided with exhanst gas outlet two,
Described fluidized bed combustion indoor are divided into fluid bed dilute-phase zone and fluid bed emulsion zone from top to bottom, the middle part of described fluid bed emulsion zone is high speed bed, be positioned at high speed bed in fluid bed emulsion zone be each side one low speed bed, described high speed bed air distribution plate is laid in bottom high speed bed, described two low speed bed air distribution plates are laid in two low speed bed bottoms, the enclosed cavity of high speed bed air distribution plate bottom is high speed bed air compartment, the enclosed cavity of two low speed bed air distribution plate bottoms is two low speed bed air compartments, described many pipe layings be laid in low speed bed in, the upper end of slag-drip opening communicates with high speed bed through high speed bed air distribution plate, described multiple overfiren air port is arranged on fluid bed dilute-phase zone bottom, the top of fluidized bed combustion chamber is provided with fluidized bed combustion chamber outlet, fluidized bed combustion chamber first cooling chamber and fluidized bed combustion chamber second cooling chamber is provided with successively after described fluidized bed combustion chamber outlet, fluidized bed combustion chamber outlet communicates with fluidized bed combustion chamber first cooling chamber, fluidized bed combustion chamber first cooling chamber and fluidized bed combustion chamber second cooling chamber are separated by cooling chamber membrane wall dividing wall one, the upper end of described cooling chamber membrane wall dividing wall one is communicated with steamdrum, lower end is communicated with water drum by header two, described header two is connected with U-type groove separator, described fluidized bed combustion chamber second cooling chamber top is provided with exit window, fuel oil or the indoor surrounding of combustion combustion of natural gas are fin panel casing one, it is fin panel casing two that fluidized bed combustion chamber is positioned at fluid bed dilute-phase zone surrounding, the top and bottom of fin panel casing one and fin panel casing two are all communicated with water drum with steamdrum, the exhanst gas outlet two-way of fuel oil or combustion combustion of natural gas room second cooling chamber is crossed fluidized bed combustion chamber second cooling chamber and is communicated with exit window, described exit window communicates with the entrance point of the first convection calandria, the port of export of described first convection calandria communicates with the entrance point of the second convection calandria, described first convection calandria and the second convection calandria are separated by convection calandria dividing wall, the port of export of described second convection calandria communicates with the arrival end of tail flue gas passage, economizer and energy-saving appliance is disposed with from top to bottom in described tail flue gas passage, in top and the bottom of the first convection calandria and the second convection calandria, the porch of economizer and energy-saving appliance arranges multiple pulse soot blower respectively), fluidized bed combustion chamber first cooling chamber and fluidized bed combustion chamber second cooling chamber bottom communicate, the conjoint outlet of fluidized bed combustion chamber first cooling chamber and fluidized bed combustion chamber second cooling chamber lower end communicates with ash returning tube, the entrance point of described ash returning tube is provided with feed back nozzle, the port of export of ash returning tube communicates with fluid bed emulsion zone, described material inlet communicates with the high speed bed of fluid bed emulsion zone and arranges, the port of export of tail flue gas passage is communicated with sack cleaner arrival end through flue, the port of export of described sack cleaner is communicated with the arrival end of air-introduced machine by flue, the port of export of described air-introduced machine is communicated with chimney one of them arrival end with two arrival ends of an air blast respectively by flue, the port of export of a described air blast is communicated with high speed bed air compartment and feed back nozzle by air channel, the port of export of described post-blast machine is communicated with two low speed bed air compartments and multiple overfiren air port respectively by air channel, the bottom of described storage tank is communicated with water circulating pump entrance by pipeline, and recirculated water delivery side of pump is communicated with the arrival end of energy-saving appliance, and the outlet of energy-saving appliance is communicated with storage tank, forms closed cycle.
The utility model relative to the beneficial effect of prior art is:
1, fuel oil or combustion of natural gas burnt from offal and be placed on different combustion chambers, offal fusing is caused the serious dust stratification of ash erosion, coking and afterbody by the high temperature avoiding fuel oil or combustion of natural gas to produce.
2, utilize boiler of the present utility model to be sent in high speed bed by offal to burn, low speed bed interior heat exchange, control fluid bed emulsion zone temperature on the one hand between 750 ~ 850 DEG C, prevent the coking of fluid bed emulsion zone; On the other hand, low speed bed interior layout pipe laying, wear problem significantly alleviates, and pipe laying reaches more than 30,000 hours service life.
3, adopt First air and Secondary Air fractional combustion and flue gas recirculation, NOx(is with NO
2meter, O
2=9%) concentration of emission is lower than 100mg/m
3, far below the emission request of up-to-date environmental emission standard GB13271-2014.
4, use flue gas cooling chamber, the flue-gas temperature entering convection calandria is reduced to less than 500 DEG C, and make the dust stratification of convection calandria and back-end surfaces be loose dust stratification, pulse soot blower is easy to removing and gets off.
5, alundum (Al2O3) (Al is adopted during utility model works
2o
3) particle both done bed material and also done additive, the ash fusion point of offal can be brought up to 1100 DEG C, thoroughly solved offal burning bed material coking problem between 750 ~ 850 DEG C.
6, fuel oil or combustion combustion of natural gas room are arranged in the left side of fluidized bed combustion chamber, can ensure the evaporating heating surface not dust stratification in fuel oil or combustion natural gas second cooling chamber and fuel oil or combustion natural gas second cooling chamber.
7, the utility model can isolated operation fuel oil or combustion natural gas boiler, also can isolated operation burning smoke stalk fluidized-bed combustion boiler, or two kinds of combustion systems carry out simultaneously, are convenient to the needs of combustion adjustment.
Accompanying drawing explanation
Fig. 1 is overall structure front view of the present utility model;
Fig. 2 is the N-N sectional view in Fig. 1;
Fig. 3 is the M-M sectional view in Fig. 1;
Fig. 4 is the K-K sectional view in Fig. 1;
Fig. 5 is the L-L sectional view in Fig. 2.
In figure: fuel oil or combustion combustion of natural gas room 1, fluidized bed combustion chamber, burner 2, fluid bed emulsion zone 3, fluid bed dilute-phase zone 4, pipe laying 5, high speed bed air distribution plate 6, low speed bed air distribution plate 7, high speed bed air compartment 8, low speed bed air compartment 9, overfiren air port 10, exhanst gas outlet 1, fluidized bed combustion chamber outlet 12, exhanst gas outlet 2 13, exit window 14, slag-drip opening 15, fluidized bed combustion chamber first cooling chamber 16, cooling chamber membrane wall dividing wall 1, fluidized bed combustion chamber second cooling chamber 18, fuel oil or combustion combustion of natural gas room first cooling chamber 19, cooling chamber membrane wall dividing wall 2 20, evaporating heating surface 21, fuel oil or combustion combustion of natural gas room second cooling chamber 22, steamdrum 23, water drum 24, pulse soot blower 25, first convection calandria 26, convection calandria dividing wall (employing membrane wall) 27, second convection calandria 28, tail flue gas passage 29, economizer 30, energy-saving appliance 31(low pressure cast iron gilled tube economizer), storage tank 32, water circulating pump 33, an air blast 34, post-blast machine 35, sack cleaner 36, air-introduced machine 37, flue damper 38, chimney 39, U-type groove separator 40, feed back nozzle 41, ash returning tube 42, material inlet 43, fin panel casing 1, header 1, header 2 46, fin panel casing 2 47.
Detailed description of the invention
Detailed description of the invention one: as shown in Fig. 1 ~ Fig. 5, integrated boiler is obstructed in fuel oil or combustion natural gas and burning smoke, comprises fuel oil or fires combustion of natural gas room 1, fluidized bed combustion chamber, burner 2, fluid bed emulsion zone 3, fluid bed dilute-phase zone 4, many pipe layings 5, high speed bed air distribution plate 6, two low speed bed air distribution plates 7, high speed bed air compartment 8, two low speed bed air compartments 9, multiple overfiren air port 10, exhanst gas outlet 1, fluidized bed combustion chamber outlet 12, exhanst gas outlet 2 13, exit window 14, slag-drip opening 15, fluidized bed combustion chamber first cooling chamber 16, cooling chamber membrane wall dividing wall 1, fluidized bed combustion chamber second cooling chamber 18, fuel oil or combustion combustion of natural gas room first cooling chamber 19, cooling chamber membrane wall dividing wall 2 20, evaporating heating surface 21, fuel oil or combustion combustion of natural gas room second cooling chamber 22, steamdrum 23, water drum 24, multiple pulse soot blower 25, first convection calandria 26, convection calandria dividing wall (employing membrane wall) 27, second convection calandria 28, tail flue gas passage 29, economizer 30, energy-saving appliance 31(low pressure cast iron gilled tube economizer), storage tank 32, water circulating pump 33, an air blast 34, post-blast machine 35, sack cleaner 36, air-introduced machine 37, flue damper 38, chimney 39, U-type groove separator 40, feed back nozzle 41, ash returning tube 42, material inlet 43, fin panel casing 1, header 1, header 2 46, fin panel casing 2 47,
Described fuel oil or combustion combustion of natural gas room 1 are near the left side being arranged on fluidized bed combustion chamber, described fuel oil or combustion combustion of natural gas room 1 are configured with burner 2, the Hou Qiang upper end of fuel oil or combustion combustion of natural gas room 1 is provided with exhanst gas outlet 1, be provided with fuel oil or combustion combustion of natural gas room first cooling chamber 19 and fuel oil after the exhanst gas outlet 11 of fuel oil or combustion combustion of natural gas room 1 successively or fire combustion of natural gas room second cooling chamber 22, described fuel oil or combustion combustion of natural gas room first cooling chamber 19 and fuel oil or combustion combustion of natural gas room second cooling chamber 22 are separated by cooling chamber membrane wall dividing wall 2 20, communicate bottom fuel oil or combustion combustion of natural gas room first cooling chamber 19 and fuel oil or combustion combustion of natural gas room second cooling chamber 22, the upper end of described cooling chamber membrane wall dividing wall 2 20 is communicated with steamdrum 23, lower end is communicated with water drum 24 by header 1, evaporating heating surface 21 is furnished with in fuel oil or combustion combustion of natural gas room second cooling chamber 22, the top of fuel oil or combustion combustion of natural gas room second cooling chamber 22 is provided with exhanst gas outlet 2 13,
Described fluidized bed combustion indoor are divided into fluid bed dilute-phase zone 4 and fluid bed emulsion zone 3 from top to bottom, the middle part of described fluid bed emulsion zone 3 is high speed bed, be positioned at high speed bed in fluid bed emulsion zone 3 be each side one low speed bed, described high speed bed air distribution plate 6 is laid in bottom high speed bed, described two low speed bed air distribution plates 7 are laid in two low speed bed bottoms, the enclosed cavity of high speed bed air distribution plate 6 bottom is high speed bed air compartment 8, the enclosed cavity of two low speed bed air distribution plate 7 bottoms is two low speed bed air compartments 9, described many pipe layings 5 be laid in low speed bed in, the upper end of slag-drip opening 15 communicates with high speed bed through high speed bed air distribution plate 6, described multiple overfiren air port 10 is arranged on fluid bed dilute-phase zone 4 bottom (being positioned at the top of pipe laying 5),
The top of fluidized bed combustion chamber is provided with fluidized bed combustion chamber outlet 12, fluidized bed combustion chamber first cooling chamber 16 and fluidized bed combustion chamber second cooling chamber 18 is provided with successively after described fluidized bed combustion chamber outlet 12, fluidized bed combustion chamber outlet 12 communicates with fluidized bed combustion chamber first cooling chamber 16, fluidized bed combustion chamber first cooling chamber 16 and fluidized bed combustion chamber second cooling chamber 18 are separated by cooling chamber membrane wall dividing wall 1, the upper end of described cooling chamber membrane wall dividing wall 1 is communicated with steamdrum 23, lower end is communicated with water drum 24 by header 2 46, described header 2 46 is connected with U-type groove separator 40, described fluidized bed combustion chamber second cooling chamber 18 top is provided with exit window 14, fuel oil or combustion combustion of natural gas room 1 in surrounding be fin panel casing 1, it is fin panel casing 2 47 that fluidized bed combustion chamber is positioned at fluid bed dilute-phase zone 4 surrounding, the top and bottom of fin panel casing 1 and fin panel casing 2 47 are all communicated with water drum 24 with steamdrum 23, the exhanst gas outlet 2 13 of fuel oil or combustion combustion of natural gas room second cooling chamber 22 is communicated with exit window 14 by fluidized bed combustion chamber second cooling chamber 18, described exit window 14 communicates with the entrance point of the first convection calandria 26, the port of export of described first convection calandria 26 communicates with the entrance point of the second convection calandria 28, described first convection calandria 26 and the second convection calandria 28 adopt membrane wall by convection calandria dividing wall 27() separate, the port of export of described second convection calandria 28 communicates with the arrival end of tail flue gas passage 29, economizer 30 and energy-saving appliance 31(low pressure cast iron gilled tube economizer is disposed with from top to bottom) in described tail flue gas passage 29, in top and the bottom of the first convection calandria 26 and the second convection calandria 28, the porch of economizer 30 and energy-saving appliance 31 arranges that multiple pulse soot blower 25(is for removing the loose dust stratification on heating surface in time respectively, ensure that exhaust gas temperature is between 130 ~ 150 DEG C), fluidized bed combustion chamber first cooling chamber 16 and fluidized bed combustion chamber second cooling chamber 18 bottom communicate, the conjoint outlet of fluidized bed combustion chamber first cooling chamber 16 and fluidized bed combustion chamber second cooling chamber 18 lower end communicates with ash returning tube 42, the entrance point of described ash returning tube 42 is provided with feed back nozzle 41, feedback air is from an air blast 34, the port of export of ash returning tube 42 communicates with fluid bed emulsion zone 3, described material inlet 43 communicates with the high speed bed of fluid bed emulsion zone 3 and arranges, the port of export of tail flue gas passage 29 is communicated with sack cleaner 36 arrival end through flue, the port of export of described sack cleaner 36 is communicated with by the arrival end of flue with air-introduced machine 37, the port of export of described air-introduced machine 37 is communicated with chimney 39 one of them arrival end with two arrival ends of an air blast 34 respectively by flue, the port of export of a described air blast 34 is communicated with high speed bed air compartment 8 and feed back nozzle 41 by air channel, the port of export of described post-blast machine 35 is communicated with two low speed bed air compartments 9 and multiple overfiren air port 10 respectively by air channel, the bottom of described storage tank 32 is communicated with water circulating pump 33 entrance by pipeline, and the outlet of water circulating pump 33 is communicated with the arrival end of energy-saving appliance 31, and the outlet of energy-saving appliance 31 is communicated with storage tank 32, forms closed cycle.
Boiler feedwater (being stabilized in 20 ~ 30 DEG C) first enters storage tank 32, after mixing with the hot water after energy-saving appliance 31 heats, water temperature reaches more than 60 DEG C, after pump into energy-saving appliance 31 through water circulating pump 33, can avoid that energy-saving appliance 31 fume side condenses, dust stratification and corrosion like this.Energy-saving appliance 31 is exactly low pressure cast iron gilled tube economizer, is existing mature technology.Install energy-saving appliance 31 additional, exhaust gas temperature can be down to 130 ~ 150 DEG C, improve boiler thermal output.Boiler feedwater (being stabilized between 20 ~ 30 DEG C) is introduced into storage tank 32, after energy-saving appliance 31 heats, then sends into oxygen-eliminating device by water pump, oxygen-eliminating device (being external device (ED), is existing mature technology).
Detailed description of the invention two: as shown in Figure 1, fuel oil described in detailed description of the invention one or combustion natural gas and burning smoke obstruct integrated boiler, the flue that one of them arrival end of two arrival ends of a described air blast 34 and the port of export of air-introduced machine 37 are communicated with therebetween is provided with flue damper 38.
The object arranging flue damper 38 is: regulate air-introduced machine 37 outlet to enter the exhaust gas volumn of First air entrance, the exhaust gas volumn of air blast 34 suction only accounts for 0 ~ 30% of amount of flue gas emission.Because air-introduced machine 37 outlet is malleation, No. one time air blast 34 entrance is negative pressure, so the flue is communicated with the port of export of air-introduced machine 37 at the arrival end of an air blast 34 does not need to arrange ventilation blower, saves equipment investment, minimizing operation power consumption.
Detailed description of the invention three: also can by Al
2o
3particle replaces to recirculating fluidized bed bed material (diameter is 0 ~ 5mm) as bed material, and adopt kaolin as additive, kaolin addition accounts for 3 ~ 10% of offal total amount, plays the effect improving ash fusion point equally; Because kaolin and KCl react same generate potassic feldspar [K (AlSi
3o
8)], its fusing point reaches more than 1100 DEG C, and solve bed material coking problem, other are identical with detailed description of the invention one or two.
The first-selected light diesel fuel of fuel oil used in the utility model.
Above detailed description of the invention is only embodiment first of the present utility model; not in order to limit the utility model; all make within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., within the protection domain that all should be included in this creation.
Claims (2)
1. an integrated boiler obstruct in fuel oil or combustion natural gas and burning smoke, fuel oil or fire natural gas and integrated boiler is obstructed in burning smoke, comprises fuel oil or fires combustion of natural gas room (1), fluidized bed combustion chamber, burner (2), fluid bed emulsion zone (3), fluid bed dilute-phase zone (4), many pipe layings (5), high speed bed air distribution plate (6), two low speed bed air distribution plates (7), high speed bed air compartment (8), two low speed bed air compartments (9), multiple overfiren air port (10), exhanst gas outlet one (11), fluidized bed combustion chamber outlet (12), exhanst gas outlet two (13), exit window (14), slag-drip opening (15), fluidized bed combustion chamber first cooling chamber (16), cooling chamber membrane wall dividing wall one (17), fluidized bed combustion chamber second cooling chamber (18), fuel oil or combustion combustion of natural gas room first cooling chamber (19), cooling chamber membrane wall dividing wall two (20), evaporating heating surface (21), fuel oil or combustion combustion of natural gas room second cooling chamber (22), steamdrum (23), water drum (24), multiple pulse soot blower (25), first convection calandria (26), convection calandria dividing wall (27), second convection calandria (28), tail flue gas passage (29), economizer (30), energy-saving appliance (31), storage tank (32), water circulating pump (33), an air blast (34), post-blast machine (35), sack cleaner (36), air-introduced machine (37), flue damper (38), chimney (39), U-type groove separator (40), feed back nozzle (41), ash returning tube (42), material inlet (43), fin panel casing one (44), header one (45), header two (46), fin panel casing two (47),
Described fuel oil or combustion combustion of natural gas room (1) are near the left side being arranged on fluidized bed combustion chamber, described fuel oil or combustion combustion of natural gas room (1) are configured with burner (2), the Hou Qiang upper end of fuel oil or combustion combustion of natural gas room (1) is provided with exhanst gas outlet one (11), be provided with fuel oil or combustion combustion of natural gas room first cooling chamber (19) and fuel oil after the exhanst gas outlet (11) of fuel oil or combustion combustion of natural gas room (1) successively or fire combustion of natural gas room second cooling chamber (22), described fuel oil or combustion combustion of natural gas room first cooling chamber (19) and fuel oil or fire combustion of natural gas room second cooling chamber (22) separated by cooling chamber membrane wall dividing wall two (20), communicate bottom fuel oil or combustion combustion of natural gas room first cooling chamber (19) and fuel oil or combustion combustion of natural gas room second cooling chamber (22), the upper end of described cooling chamber membrane wall dividing wall two (20) is communicated with steamdrum (23), lower end is communicated with water drum (24) by header one (45), evaporating heating surface (21) is furnished with in fuel oil or combustion combustion of natural gas room second cooling chamber (22), the top of fuel oil or combustion combustion of natural gas room second cooling chamber (22) is provided with exhanst gas outlet two (13), described fluidized bed combustion indoor are divided into fluid bed dilute-phase zone (4) and fluid bed emulsion zone (3) from top to bottom, the middle part of described fluid bed emulsion zone (3) is high speed bed, be positioned at high speed bed in fluid bed emulsion zone (3) be each side one low speed bed, described high speed bed air distribution plate (6) is laid in bottom high speed bed, described two low speed bed air distribution plates (7) are laid in two low speed bed bottoms, the enclosed cavity of high speed bed air distribution plate (6) bottom is high speed bed air compartment (8), the enclosed cavity of two low speed bed air distribution plate (7) bottoms is two low speed bed air compartments (9), described many pipe layings (5) be laid in low speed bed in, the upper end of slag-drip opening (15) communicates with high speed bed through high speed bed air distribution plate (6), described multiple overfiren air port (10) is arranged on fluid bed dilute-phase zone (4) bottom, the top of fluidized bed combustion chamber is provided with fluidized bed combustion chamber outlet (12), fluidized bed combustion chamber first cooling chamber (16) and fluidized bed combustion chamber second cooling chamber (18) is provided with successively after described fluidized bed combustion chamber outlet (12), fluidized bed combustion chamber outlet (12) communicates with fluidized bed combustion chamber first cooling chamber (16), fluidized bed combustion chamber first cooling chamber (16) and fluidized bed combustion chamber second cooling chamber (18) are separated by cooling chamber membrane wall dividing wall one (17), the upper end of described cooling chamber membrane wall dividing wall one (17) is communicated with steamdrum (23), lower end is communicated with water drum (24) by header two (46), described header two (46) is connected with U-type groove separator (40), described fluidized bed combustion chamber second cooling chamber (18) top is provided with exit window (14), fuel oil or combustion combustion of natural gas room (1) interior surrounding are fin panel casing one (44), it is fin panel casing two (47) that fluidized bed combustion chamber is positioned at fluid bed dilute-phase zone (4) surrounding, the top and bottom of fin panel casing one (44) and fin panel casing two (47) are all communicated with water drum (24) with steamdrum (23), the exhanst gas outlet two (13) of fuel oil or combustion combustion of natural gas room second cooling chamber (22) is communicated with exit window (14) by fluidized bed combustion chamber second cooling chamber (18), described exit window (14) communicates with the entrance point of the first convection calandria (26), the port of export of described first convection calandria (26) communicates with the entrance point of the second convection calandria (28), described first convection calandria (26) and the second convection calandria (28) are separated by convection calandria dividing wall (27), the port of export of described second convection calandria (28) communicates with the arrival end of tail flue gas passage (29), economizer (30) and energy-saving appliance (31) is disposed with from top to bottom in described tail flue gas passage (29), in top and the bottom of the first convection calandria (26) and the second convection calandria (28), the porch of economizer (30) and energy-saving appliance (31) arranges multiple pulse soot blower (25) respectively, fluidized bed combustion chamber first cooling chamber (16) and fluidized bed combustion chamber second cooling chamber (18) bottom communicate, the conjoint outlet of fluidized bed combustion chamber first cooling chamber (16) and fluidized bed combustion chamber second cooling chamber (18) lower end communicates with ash returning tube (42), the entrance point of described ash returning tube (42) is provided with feed back nozzle (41), the port of export of ash returning tube (42) communicates with fluid bed emulsion zone (3), described material inlet (43) communicates with the high speed bed of fluid bed emulsion zone (3) and arranges, the port of export of tail flue gas passage (29) is communicated with sack cleaner (36) arrival end through flue, the port of export of described sack cleaner (36) is communicated with by the arrival end of flue with air-introduced machine (37), the port of export of described air-introduced machine (37) is communicated with chimney (39) one of them arrival end with two arrival ends of an air blast (34) respectively by flue, the port of export of a described air blast (34) is communicated with high speed bed air compartment (8) and feed back nozzle (41) by air channel, the port of export of described post-blast machine (35) is communicated with two low speed bed air compartments (9) and multiple overfiren air port (10) respectively by air channel, the bottom of described storage tank (32) is communicated with water circulating pump (33) entrance by pipeline, and the outlet of water circulating pump (33) is communicated with the arrival end of energy-saving appliance (31), and the outlet of energy-saving appliance (31) is communicated with storage tank (32), forms closed cycle.
2. fuel oil according to claim 1 or combustion natural gas and burning smoke obstruct integrated boiler, it is characterized in that: the flue that one of them arrival end of two arrival ends of a described air blast (34) and the port of export of air-introduced machine (37) are communicated with therebetween is provided with flue damper (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520612922.8U CN204853459U (en) | 2015-08-15 | 2015-08-15 | Fuel or fire natural gas and fire offal integration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520612922.8U CN204853459U (en) | 2015-08-15 | 2015-08-15 | Fuel or fire natural gas and fire offal integration boiler |
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| Publication Number | Publication Date |
|---|---|
| CN204853459U true CN204853459U (en) | 2015-12-09 |
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| CN201520612922.8U Expired - Fee Related CN204853459U (en) | 2015-08-15 | 2015-08-15 | Fuel or fire natural gas and fire offal integration boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180156A (en) * | 2015-08-15 | 2015-12-23 | 湖南博茂节能环保科技有限公司 | Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method |
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2015
- 2015-08-15 CN CN201520612922.8U patent/CN204853459U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180156A (en) * | 2015-08-15 | 2015-12-23 | 湖南博茂节能环保科技有限公司 | Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method |
| CN105180156B (en) * | 2015-08-15 | 2017-05-24 | 湖南博茂节能环保科技有限公司 | Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method |
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