CN105180156A - Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method - Google Patents
Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method Download PDFInfo
- Publication number
- CN105180156A CN105180156A CN201510499432.6A CN201510499432A CN105180156A CN 105180156 A CN105180156 A CN 105180156A CN 201510499432 A CN201510499432 A CN 201510499432A CN 105180156 A CN105180156 A CN 105180156A
- Authority
- CN
- China
- Prior art keywords
- combustion
- cooling chamber
- bed
- fuel oil
- burning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention relates to an oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and a contaminant control method and belongs to the field of oil-burning or natural-gas-burning and tobacco-stem-waste-burning boilers. The problems that slagging and coking exist when fuel oil or natural gas and tobacco stems are burnt together in a fluidized bed boiler are solved. A first smoke outlet of an oil-burning or natural-gas-burning combustor is sequentially communicated with a first oil-burning or natural-gas-burning combustor cooling chamber and a second oil-burning or natural-gas-burning combustor cooling chamber which are located behind the first smoke outlet. An outlet of a fluidized bed combustor is communicated with a first fluidized bed combustor cooling chamber and a second fluidized bed combustor cooling chamber which are located behind the outlet. The first fluidized bed combustor cooling chamber is separated from the second fluidized bed combustor cooling chamber through a first membrane panel separation wall. The lower end of the first cooling chamber membrane panel separation wall is connected with a U-shaped groove separator. The second fluidized bed combustor cooling chamber is communicated with a second smoke outlet of the second oil-burning or natural-gas-burning combustor cooling chamber. An outlet window of the second fluidized bed combustor cooling chamber is communicated with a first convection exhaust pipe and a second convection exhaust pipe. The second convection exhaust pipe is communicated with a coal economizer and an energy saver. The boiler is used for burning fuel oil or natural gas and tobacco stem waste.
Description
Technical field
The present invention relates to fuel oil or combustion natural gas and burn offal integrated boiler and pollutant catabolic gene method, belong 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 application for a patent for invention 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 object of this invention is to provide a kind of fuel oil or combustion natural gas and burning smoke and obstruct integrated boiler and pollutant catabolic gene method, 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 invention 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, technical scheme of the present invention is:
Integrated boiler is obstructed in fuel oil of the present invention 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 fuel oil or combustion natural gas and burning smoke of utilizing of the present invention obstructs integrated boiler and realizes pollutant catabolic gene method, and described method comprises the steps:
Step one: by offal and Al
2o
3particle enters the high speed bed combustion of fluid bed emulsion zone together by gravity from material inlet, described Al
2o
3diameter≤the 3mm of particle, the heat that the burning of described offal produces by be laid in fluid bed emulsion zone low speed bed in many imbedded pipe heat-exchangings after control described high speed bed and low speed bed temperature between 750 ~ 850 DEG C, simultaneously, First air enters high speed bed air compartment and enters the burning of high speed bed through high speed bed air distribution plate, a Secondary Air part is sent into low speed bed air compartment and is entered low speed bed participation burning through low speed bed air distribution plate, and the remainder of Secondary Air enters fluid bed dilute-phase zone by multiple overfiren air port and participates in burning, the flue gas that offal burning produces is again after the heat exchange of fluid bed dilute-phase zone surrounding fin panel casing two, fluidized bed combustion chamber exit flue-gas temperature is below 650 DEG C, the flue gas that offal burning afterwards produces enters the heat exchange of fluidized bed combustion chamber first cooling chamber, through U-type groove separator, imperfect combustion offal and fine grained bed material are separated, and burnt away in ash returning tube feeding fluid bed emulsion zone by feed back nozzle, the flue gas after the heat exchange of fluidized bed combustion chamber first cooling chamber enters fluidized bed combustion chamber second cooling chamber, fuel oil or natural gas are sent into burner combustion simultaneously, the high-temperature flue gas that burning produces is after fuel oil or the heat exchange of combustion combustion of natural gas indoor surrounding fin panel casing one, fuel oil or combustion combustion of natural gas room first cooling chamber is entered by the exhanst gas outlet one being arranged on fuel oil or combustion upper end, combustion of natural gas room, enter fuel oil or combustion combustion of natural gas room second cooling chamber afterwards, after being absorbed heat by the evaporating heating surface arranged in fuel oil or combustion combustion of natural gas room second cooling chamber, out converged with the flue gas entered in fluidized bed combustion chamber second cooling chamber by the exhanst gas outlet two be arranged on above fuel oil or combustion combustion of natural gas room second cooling chamber,
Step 2: the flue gas after converging enters the first convection calandria and the second convection calandria by exit window, forms partition wall between the first convection calandria and the second convection calandria by convection calandria dividing wall; Flue gas enters tail flue gas passage afterwards, after economizer and energy-saving appliance, flue-gas temperature enters sack cleaner after being down to 130 ~ 150 DEG C, after dedusting, flue gas is drawn through air-introduced machine, wherein part of smoke sends into high speed bed air compartment and feed back nozzle by an air blast, realize flue gas recirculation, remainder flue gas is sent into chimney and is entered in air.
The present invention 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, offal is sent in high speed bed and is burnt, low speed bed interior heat exchange by the present invention, controls fluid bed emulsion zone temperature on the one hand between 750 ~ 850 DEG C, prevents 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, the present invention adopts alundum (Al2O3) (Al
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 present invention 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 invention;
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. 1.
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: as shown in Fig. 1 ~ Fig. 5, utilize the fuel oil described in detailed description of the invention one or two or combustion natural gas and burning smoke to obstruct integrated boiler and realize pollutant catabolic gene method, described method is that natural gas burns and realizes pollutant catabolic gene method together with offal, comprises the steps:
Step one: by offal and Al
2o
3particle (Al
2o
3particle had both done bed material and had also done additive) enter the high speed bed combustion of fluid bed emulsion zone 3, described Al together by gravity from material inlet 43
2o
3diameter≤the 3mm of particle, the heat that the burning of described offal produces by be laid in fluid bed emulsion zone 3 low speed bed in many pipe layings 5 heat exchange after control described high speed bed and low speed bed temperature between 750 ~ 850 DEG C, simultaneously, First air enters high speed bed air compartment 8 and enters the burning of high speed bed through high speed bed air distribution plate 6, a Secondary Air part is sent into low speed bed air compartment 9 and is entered low speed bed participation burning through low speed bed air distribution plate 7, the remainder of Secondary Air enters fluid bed dilute-phase zone 4 by multiple overfiren air port 10 and participates in burning (mode of this fractional combustion is for the discharge of control NOx, be CN102901212B at publication number about high speed bed and low speed bed structure and operational factor, publication date is open in the patent of invention " a kind of combustion low circulation fluidized bed hot-water boiler of inferior fuel and combustion method thereof " of on 03 11st, 2015), the flue gas that offal burning produces is again after the heat exchange of fluid bed dilute-phase zone 4 surrounding fin panel casing 2 47, fluidized bed combustion chamber exports 12 place's flue-gas temperatures below 650 DEG C, the flue gas that offal burning afterwards produces enters the heat exchange of fluidized bed combustion chamber first cooling chamber 16, through U-type groove separator 40, imperfect combustion offal and fine grained (diameter>=80 μm) bed material are separated, and sent in fluid bed emulsion zone 3 burn away (improving offal efficiency of combustion) through ash returning tube 42 by feed back nozzle 41, flue gas after the heat exchange of fluidized bed combustion chamber first cooling chamber 16 enters fluidized bed combustion chamber second cooling chamber 18,
Fuel oil or natural gas are sent into burner 2 combustion simultaneously, the high-temperature flue gas that burning produces is after surrounding fin panel casing 1 heat exchange in fuel oil or combustion combustion of natural gas room 1, fuel oil or combustion combustion of natural gas room first cooling chamber 19 is entered by the exhanst gas outlet 1 being arranged on fuel oil or combustion upper end, combustion of natural gas room 1, enter fuel oil or combustion combustion of natural gas room second cooling chamber 22 afterwards, after being absorbed heat by the evaporating heating surface 21 arranged in fuel oil or combustion combustion of natural gas room second cooling chamber 22, out converged with the flue gas entered in fluidized bed combustion chamber second cooling chamber 18 by the exhanst gas outlet 2 13 be arranged on above fuel oil or combustion combustion of natural gas room second cooling chamber 22,
Step 2: the flue gas after converging enters the first convection calandria 26 by exit window 14 and forms partition wall by convection calandria dividing wall 27 between the second convection calandria 28, first convection calandria 26 and the second convection calandria 28; Flue gas enters tail flue gas passage 29 afterwards, after economizer 30 and energy-saving appliance 31, flue-gas temperature enters sack cleaner 36 after being down to 130 ~ 150 DEG C, after dedusting, flue gas is drawn through air-introduced machine 37, wherein part of smoke sends into high speed bed air compartment 8 and feed back nozzle 41 by an air blast 34, realize flue gas recirculation (exhaust gas volumn of air blast 34 suction only accounts for 0 ~ 30% of amount of flue gas emission), remainder flue gas is sent into chimney 39 and is entered in air.
Detailed description of the invention four: as shown in Fig. 1 ~ Fig. 5, utilize the fuel oil described in detailed description of the invention one or two or combustion natural gas and burning smoke to obstruct integrated boiler and realize pollutant catabolic gene method, described method is that fuel oil burns and realizes pollutant catabolic gene method together with offal, comprises the steps:
Step one: by offal and Al
2o
3particle (Al
2o
3particle had both done bed material and had also done additive) enter the high speed bed combustion of fluid bed emulsion zone 3, described Al together by gravity from material inlet 43
2o
3diameter≤the 3mm of particle, the heat that the burning of described offal produces by be laid in fluid bed emulsion zone 3 low speed bed in many pipe layings 5 heat exchange after control described high speed bed and low speed bed temperature between 750 ~ 850 DEG C, simultaneously, First air enters high speed bed air compartment 8 and enters the burning of high speed bed through high speed bed air distribution plate 6, a Secondary Air part is sent into low speed bed air compartment 9 and is entered low speed bed participation burning through low speed bed air distribution plate 7, the remainder of Secondary Air enters fluid bed dilute-phase zone 4 by multiple overfiren air port 10 and participates in burning (mode of this fractional combustion is for the discharge of control NOx, be CN102901212B at publication number about high speed bed and low speed bed structure and operational factor, publication date is open in the patent of invention " a kind of combustion low circulation fluidized bed hot-water boiler of inferior fuel and combustion method thereof " of on 03 11st, 2015), the flue gas that offal burning produces is again after the heat exchange of fluid bed dilute-phase zone 4 surrounding fin panel casing 2 47, fluidized bed combustion chamber exports 12 place's flue-gas temperatures below 650 DEG C, the flue gas that offal burning afterwards produces enters the heat exchange of fluidized bed combustion chamber first cooling chamber 16, through U-type groove separator 40, imperfect combustion offal and thin bed material particle separation are got off, and sent in fluid bed emulsion zone 3 burn away (improving offal efficiency of combustion) through ash returning tube 42 by feed back nozzle 41, flue gas after the heat exchange of fluidized bed combustion chamber first cooling chamber 16 enters fluidized bed combustion chamber second cooling chamber 18,
Fuel oil is sent into burner 2 combustion, the high-temperature flue gas that burning produces is after surrounding fin panel casing 1 heat exchange in oil inflame room 1, fuel oil first cooling chamber 19 is entered by the exhanst gas outlet 1 being arranged on upper end, oil inflame room 1, enter fuel oil second cooling chamber 22 afterwards, after the evaporating heating surface 21 in fuel oil second cooling chamber 22 absorbs heat, by the exhanst gas outlet 2 13 be arranged on above fuel oil second cooling chamber 22 out, converge with the flue gas entered in fluidized bed combustion chamber second cooling chamber 18;
Step 2: the flue gas after converging enters the first convection calandria 26 by exit window 14 and forms partition wall by convection calandria dividing wall 27 between the second convection calandria 28, first convection calandria 26 and the second convection calandria 28; Flue gas enters tail flue gas passage 29 afterwards, after economizer 30 and energy-saving appliance 31, flue-gas temperature enters sack cleaner 36 after being down to 130 ~ 150 DEG C, after dedusting, flue gas is drawn through air-introduced machine 37, wherein part of smoke sends into high speed bed air compartment 8 and feed back nozzle 41 by an air blast 34, realizes flue gas recirculation; Remainder flue gas is sent into chimney 39 and is entered in air.
The beneficial effect of detailed description of the invention three and four is: adopt fuel oil or combustion combustion natural gas independent burning in fuel oil or combustion combustion of natural gas room 1, the high-temperature flue gas avoiding burning to produce directly contacts with offal, ash after causing offal to burn melts, thus the problems such as the bed material coking avoiding fuel oil and offal to cause in same chamber combustion, ash erosion and the serious dust stratification of back-end surfaces.
The mixed uniformly realization of offal and bed material: offal and Al
2o
3particle (both done bed material and also done additive) enters the high speed bed of fluid bed emulsion zone 3 together by gravity from material inlet 43, owing to being negative pressure feed, material inlet 43 is tiny structure, can not outside flame, just can realize negative pressure feed when fluidized bed combustion chamber exports 12 negative pressure for during-150Pa left and right.Because bed material and offal density difference are very large, mixing of materials is evenly very important; The speed of high speed bed is high, it is generally low speed bed more than 2 times, high speed bed material translate into low speed bed on, low speed bed material is got back to again in high speed bed under fluidisation wind action, make it high speed bed and low speed bed between form strong material Inner eycle, thus it is very even that offal is mixed with bed material.
Deslagging: the ash produced after offal burning and bed material Al
2o
3reaction forms high-melting-point substances, causes bed material to be grown up gradually, and form spheric granules, when grain diameter is grown up to more than 8mm, due to spheric granules, (main component is Al
2o
3and SiO
2) density is large, just there will be fluidisation difficulty, at this moment need bulky grain to be discharged by slag-drip opening 15, supplement the Al of diameter≤3mm
2o
3particle, ensures fluid bed emulsion zone 3 active fluidization, meets in high speed bed air compartment 8 that pressure is between 8000 ~ 9000Pa simultaneously, and the pressure in low speed bed air compartment 9 is 4000 ~ 5000Pa.
NOx controls: in order to the concentration of emission of control NOx is lower than the discharge standard of GB13271-2014, first selects low NOx oil burner, meet NOx emission concentration lower than 100mg/m
3; Secondly, adopt First air, Secondary Air fractional combustion, and flue gas recirculating technique controls fluid bed emulsion zone 3 temperature between 750 ~ 850 DEG C, exit window 14 place oxygen concentration, between 3 ~ 4%, makes NOx(with NO
2meter, O
2=9%) concentration of emission is lower than 100mg/m
3.
The control measure of bed material coking: in order to solve offal burning coking problem, selecting bed material very crucial, quartz sand can not be selected to expect as bed, because quartz sand main component is SiO
2, SiO
2with K
2composition in O(ash, in table 1) reaction generation K
2o.nSiO
2(n is modulus) i.e. glass, its fusing point of difference according to modulus n changes between 680 ~ 800 DEG C, so under 750 ~ 850 DEG C of running temperatures, bed material can be bonded together by the glass of generation as glue, causes the serious coking of bed material.Found by research, Al
2o
3can improve the ash fusion point of living beings, its principle is Al
2o
3siO after can burning with offal in the KCl that generates and offal ash
2(see table 1) reaction generates high-melting-point substances K(AlSi
3o
8) (potassic feldspar), fusing point reaches 1100 DEG C, therefore solves the coking problem of bed material, so, select the Al of diameter≤3mm
2o
3particle does bed material, and temperature controls between 750 ~ 850 DEG C, and practice shows, Al
2o
3a difficult problem for offal burning bed material coking can be solved well.
SO
2and the emission control of flue dust: because the sulfur content of offal is lower than 0.1%, original SO
2concentration of emission is lower than 200mg/m
3, lower than the 300mg/m that GB13271-2014 requires
3discharge standard, so, do not need further desulfurization just can be up to standard.Adopt sack cleaner 36, smoke dust discharge concentration is lower than 30mg/m
3, also lower than the 50mg/m that GB13271-2014 requires
3discharge standard.
Detailed description of the invention five: as shown in Fig. 1 ~ Fig. 4, utilize the fuel oil described in detailed description of the invention one or two or combustion natural gas and burning smoke to obstruct integrated boiler and realize pollutant catabolic gene method, described method is that fuel oil or combustion natural gas burn separately and realize pollutant catabolic gene method, comprises the steps:
Step one: fuel oil or combustion natural gas are sent into burner 2 combustion, the high-temperature flue gas that described fuel oil or combustion natural gas produce in burner 2 combustion is through fuel oil or to fire in combustion of natural gas room 1 after surrounding fin panel casing 1 heat exchange, enter the fuel oil after fuel oil or combustion combustion of natural gas room 1 by the exhanst gas outlet 1 being arranged on fuel oil or combustion upper end, combustion of natural gas room 1 or fire combustion of natural gas room first cooling chamber 19, enter fuel oil or combustion combustion of natural gas room second cooling chamber 22 afterwards, after evaporating heating surface 21 heat exchange in fuel oil or combustion combustion of natural gas room second cooling chamber 22, discharged by the exhanst gas outlet 2 13 be arranged on above fuel oil or combustion combustion of natural gas room second cooling chamber 22,
Step 2: the flue gas ejected by the exhanst gas outlet 2 13 above fuel oil or combustion combustion of natural gas room second cooling chamber 22, after fluidized bed combustion chamber second cooling chamber 18, enter the first convection calandria 26 by exit window 14 and form partition wall by convection calandria dividing wall 27 between the second convection calandria 28, first convection calandria 26 and the second convection calandria 28; Flue gas enters tail flue gas passage 29 afterwards, and after economizer 30 and energy-saving appliance 31, flue-gas temperature enters sack cleaner 36 after being down to 130 ~ 150 DEG C, and after dedusting, flue gas is drawn through air-introduced machine 37, sends into chimney 39 and enters in air.
In present embodiment, the fluidized bed combustion chamber of burning offal side does not run.
The effect of detailed description of the invention five is: the present embodiment is equivalent to fuel oil or combustion natural gas steam boiler, pollutant (NOx≤100mg/m
3, SO
2≤ 30mg/m
3) concentration of emission is low, environment protecting is good.
Detailed description of the invention six: as shown in Fig. 1 ~ Fig. 4, utilize the fuel oil described in detailed description of the invention one or two or combustion natural gas and burning smoke to obstruct integrated boiler and realize pollutant catabolic gene method, described method is that offal burns separately and realizes pollutant catabolic gene method, comprises the steps:
Step one: by offal and Al
2o
3particle (Al
2o
3particle had both done bed material and had also done additive) enter the high speed bed combustion of fluid bed emulsion zone 3, described Al together by gravity from material inlet 43
2o
3diameter≤the 3mm of particle, the heat that the burning of described offal produces by be laid in fluid bed emulsion zone 3 low speed bed in many pipe layings 5 heat exchange after control described high speed bed and low speed bed temperature between 750 ~ 850 DEG C, simultaneously, First air enters high speed bed air compartment 8 and enters the burning of high speed bed through high speed bed air distribution plate 6, a Secondary Air part is sent into low speed bed air compartment 9 and is entered low speed bed participation burning through low speed bed air distribution plate 7, the remainder of Secondary Air enters fluid bed dilute-phase zone 4 by multiple overfiren air port 10 and participates in burning (mode of this fractional combustion is for the discharge of control NOx, be CN102901212B at publication number about high speed bed and low speed bed structure and operational factor, publication date is open in the patent of invention " a kind of combustion low circulation fluidized bed hot-water boiler of inferior fuel and combustion method thereof " of on 03 11st, 2015), the flue gas that offal burning produces is after surrounding fin panel casing 2 47 heat exchange in fluid bed dilute-phase zone 4, fluidized bed combustion chamber exports 12 place's flue-gas temperatures below 650 DEG C, the flue gas that offal burning afterwards produces enters the heat exchange of fluidized bed combustion chamber first cooling chamber 16, through U-type groove separator 40, imperfect combustion offal and fine grained bed material are separated, and sent in fluid bed emulsion zone 3 burn away (improving offal efficiency of combustion) through ash returning tube 42 by feed back nozzle 41, flue gas after the heat exchange of fluidized bed combustion chamber first cooling chamber 16 enters fluidized bed combustion chamber second cooling chamber 18,
Step 2: flue gas enters the first convection calandria 26 by the exit window 14 of fluidized bed combustion chamber second cooling chamber 18 and forms partition wall by convection calandria dividing wall 27 between the second convection calandria 28, first convection calandria 26 and the second convection calandria 28; Flue gas enters tail flue gas passage 29 afterwards, after economizer 30 and energy-saving appliance 31, flue-gas temperature enters sack cleaner 36 after being down to 130 ~ 150 DEG C, after dedusting, flue gas is drawn through air-introduced machine 37, wherein part of smoke sends into high speed bed air compartment 8 and feed back nozzle 41 by an air blast 34, realizes flue gas recirculation; Remainder flue gas is sent into chimney 39 and is entered in air.
In present embodiment, fuel oil or combustion combustion of natural gas room 1 are not run.
The effect of detailed description of the invention six is: the present embodiment is equivalent to the fluidized-bed combustion boiler of pure burning offal, adopts Al
2o
3particle had both done bed material and had also done additive, solve offal burn easily cause because ash fusion point is low coking, ash erosion and afterbody dust stratification problem.Pollutant NOx≤100mg/m
3, SO
2≤ 200mg/m
3concentration of emission is low, and environment protecting is good.
Detailed description of the invention seven: 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 six.
The first-selected light diesel fuel of fuel oil used in the present invention.
Above detailed description of the invention is only embodiment first of the present invention, not in order to limit the present invention, all make within spirit of the present invention and principle any amendment, equivalent replacement, improvement etc., within the protection domain that all should be included in this creation.
Claims (3)
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).
3. utilize the fuel oil described in claim 1 or 2 or combustion natural gas and burning smoke to obstruct integrated boiler and realize a pollutant catabolic gene method, it is characterized in that: described method comprises the steps:
Step one: by offal and Al
2o
3particle enters the high speed bed combustion of fluid bed emulsion zone (3) together by gravity from material inlet (43), described Al
2o
3diameter≤the 3mm of particle, the heat that the burning of described offal produces by be laid in fluid bed emulsion zone (3) low speed bed in many pipe layings (5) heat exchange after control described high speed bed and low speed bed temperature between 750 ~ 850 DEG C, simultaneously, First air enters high speed bed air compartment (8) and enters the burning of high speed bed through high speed bed air distribution plate (6), a Secondary Air part is sent into low speed bed air compartment (9) and is entered low speed bed participation burning through low speed bed air distribution plate (7), and the remainder of Secondary Air enters fluid bed dilute-phase zone (4) by multiple overfiren air port (10) and participates in burning, the flue gas that offal burning produces is again after surrounding fin panel casing (47) heat exchange in fluid bed dilute-phase zone (4), fluidized bed combustion chamber outlet (12) place flue-gas temperature is below 650 DEG C, the flue gas that offal burning afterwards produces enters fluidized bed combustion chamber first cooling chamber (16) heat exchange, through U-type groove separator (40), imperfect combustion offal and fine grained bed material are separated, and burnt away in ash returning tube (42) feeding fluid bed emulsion zone (3) by feed back nozzle (41), flue gas after the first cooling chamber (16) heat exchange enters the second cooling chamber (18), fuel oil or natural gas are sent into burner (2) combustion simultaneously, the high-temperature flue gas that burning produces is after surrounding fin panel casing one (44) heat exchange in fuel oil or combustion combustion of natural gas room (1), fuel oil or combustion combustion of natural gas room first cooling chamber (19) is entered by the exhanst gas outlet one (11) being arranged on fuel oil or combustion combustion of natural gas room (1) upper end, enter fuel oil or combustion combustion of natural gas room second cooling chamber (22) afterwards, after being absorbed heat by the evaporating heating surface (21) arranged in fuel oil or combustion combustion of natural gas room second cooling chamber (22), out converged with the flue gas entered in fluidized bed combustion chamber second cooling chamber (18) by the exhanst gas outlet two (13) being arranged on fuel oil or combustion combustion of natural gas room second cooling chamber (22) top,
Step 2: the flue gas after converging enters the first convection calandria (26) and the second convection calandria (28) by exit window (14), forms partition wall between the first convection calandria (26) and the second convection calandria (28) by convection calandria dividing wall (27); Flue gas enters tail flue gas passage (29) afterwards, after economizer (30) and energy-saving appliance (31), flue-gas temperature enters sack cleaner (36) after being down to 130 ~ 150 DEG C, after dedusting, flue gas is drawn through air-introduced machine (37), wherein part of smoke sends into high speed bed air compartment (8) and feed back nozzle (41) by an air blast (34), realize flue gas recirculation, remainder flue gas is sent into chimney (39) and is entered in air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499432.6A CN105180156B (en) | 2015-08-15 | 2015-08-15 | Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499432.6A CN105180156B (en) | 2015-08-15 | 2015-08-15 | Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105180156A true CN105180156A (en) | 2015-12-23 |
| CN105180156B CN105180156B (en) | 2017-05-24 |
Family
ID=54902429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510499432.6A Expired - Fee Related CN105180156B (en) | 2015-08-15 | 2015-08-15 | Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105180156B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202319A (en) * | 2017-07-06 | 2017-09-26 | 烟台龙源电力技术股份有限公司 | A kind of differential fluidized-bed boiler system and its method for producing circulating flue gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068183A (en) * | 1991-06-24 | 1993-01-20 | 江西锅炉厂 | Cycling fuidized bed boiler with low carrying rate |
| CN2202845Y (en) * | 1993-06-30 | 1995-07-05 | 湘潭锅炉厂 | Low-pressure, sub-medium pressure, low multiple rate circulation fluidized bed |
| CN104033884A (en) * | 2014-06-28 | 2014-09-10 | 湘潭锅炉有限责任公司 | Boiler capable of burning biomass and tobacco stems in particular |
| JP2015045486A (en) * | 2013-08-29 | 2015-03-12 | 株式会社Ihi | Fluidized-bed boiler and fluidized-bed boiler operation method |
| CN204853459U (en) * | 2015-08-15 | 2015-12-09 | 湖南博茂节能环保科技有限公司 | Fuel or fire natural gas and fire offal integration boiler |
-
2015
- 2015-08-15 CN CN201510499432.6A patent/CN105180156B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068183A (en) * | 1991-06-24 | 1993-01-20 | 江西锅炉厂 | Cycling fuidized bed boiler with low carrying rate |
| CN2202845Y (en) * | 1993-06-30 | 1995-07-05 | 湘潭锅炉厂 | Low-pressure, sub-medium pressure, low multiple rate circulation fluidized bed |
| JP2015045486A (en) * | 2013-08-29 | 2015-03-12 | 株式会社Ihi | Fluidized-bed boiler and fluidized-bed boiler operation method |
| CN104033884A (en) * | 2014-06-28 | 2014-09-10 | 湘潭锅炉有限责任公司 | Boiler capable of burning biomass and tobacco stems in particular |
| CN204853459U (en) * | 2015-08-15 | 2015-12-09 | 湖南博茂节能环保科技有限公司 | Fuel or fire natural gas and fire offal integration boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202319A (en) * | 2017-07-06 | 2017-09-26 | 烟台龙源电力技术股份有限公司 | A kind of differential fluidized-bed boiler system and its method for producing circulating flue gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105180156B (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101949535B (en) | Low-ratio biomass circulating fluidized bed boiler and combustion method thereof | |
| CN2864378Y (en) | Multistage multi-room gas boiler for coal gasification | |
| CN108758651A (en) | A kind of circulating fluidized bed boiler suitable for waste incineration | |
| CN106224981A (en) | A kind of to relate to the cigarette garbage boiler thermodynamic system as fuel and method thereof | |
| CN104075437A (en) | Straw-coal cooperation combustion normal pressure water boiler | |
| CN204829898U (en) | Biomass briquette fuel and offal multi -fuel fired boiler | |
| CN201396743Y (en) | Angle pipe type circulating fluidized bed boiler | |
| CN105042578B (en) | Coal and offal multi-fuel fired boiler and its pollutant catabolic gene method | |
| CN104819460A (en) | Horizontal biomass briquette fuel fluidized bed heat pipe boiler | |
| CN105135422B (en) | Biomass molding fuel and offal multi-fuel fired boiler and its pollutant catabolic gene method | |
| CN104964269B (en) | A kind of pre- hot air boiler of two-stage for burning fin type water pipe furnace grate with being all-trans | |
| CN204853459U (en) | Fuel or fire natural gas and fire offal integration boiler | |
| CN207750966U (en) | A kind of new combustion chaff-fired boiler | |
| CN105180156B (en) | Oil-burning or natural-gas-burning and tobacco-stem-burning integrated boiler and contaminant control method | |
| CN206073089U (en) | It is a kind of to relate to boiler thermodynamic system of the cigarette garbage as fuel | |
| CN204901741U (en) | Two -stage accent wind furnace that application is all -trans and is burnt fin formula water pipe grate | |
| CN204829889U (en) | Domestic energy -concerving and environment -protective boiler | |
| CN203464323U (en) | Novel environmental protection boiler with boiler internal smoke and dust abatement clean burning | |
| CN201513880U (en) | Integral gasifying combination burning boiler | |
| CN208042119U (en) | Parallel-connection type coal-burning powder heat medium heater | |
| CN207065874U (en) | A kind of fire coal, biomass-burning, fuel vapor multi-fired boiler | |
| CN200958749Y (en) | Economical environmental-protecting boiler of coal clean burning | |
| CN204665229U (en) | The horizontal coal-fired steam boiler of modified list drum | |
| CN218095908U (en) | Coal-fired industrial boiler of semi-gasification combined combustion | |
| CN201944821U (en) | Double oxygen coal-to-gas swirl type combustion smokeless boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20190815 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |