CN207539881U - Gas-solid mixes combustion high moisture fuel steam boiler - Google Patents
Gas-solid mixes combustion high moisture fuel steam boiler Download PDFInfo
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- CN207539881U CN207539881U CN201721447890.6U CN201721447890U CN207539881U CN 207539881 U CN207539881 U CN 207539881U CN 201721447890 U CN201721447890 U CN 201721447890U CN 207539881 U CN207539881 U CN 207539881U
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Abstract
The utility model discloses a kind of gas-solid and mixes combustion high moisture fuel steam boiler, including burner block and boiler body, boiler body is placed in the top of burner block, boiler body includes water cooling tube, upper drum, convection tube, lower drum, energy-saving appliance and air preheater, water cooling tube is vertical setting, the burner hearth of the lower end connection burner block of water cooling tube, upper drum and lower drum are in horizontally disposed, the upper end of the front end connection water cooling tube of upper drum, convection tube, lower drum, energy-saving appliance and air preheater are arranged in the lower section at upper drum rear portion down successively, the rear end of convection tube connection upper drum and the front end of lower drum, the rear end of lower drum is sequentially connected energy-saving appliance and air preheater.Burner block is made the combining form of " gasification of biomass and burner+high-low-position cant reciprocal grate " by this boiler, it can ensure efficient after-flame high-moisture biomass fuel, flue is not easy to plug, and boiler thermal efficiency is high, it is compact-sized, it is light-weight, convenient for installation and maintenance.
Description
Technical field
The utility model is related to boiler combustion equipment, specially a kind of gas-solid mixes combustion high moisture fuel steam boiler.
Background technology
Biomass fuel category green regenerative energy sources, biomass fuel boiler have it is environmental clean, operating cost is low, efficient
It energy saving, the advantages that being increased income for the people, is widely applied.
But fresh biomass water-in-fuel rate is high, its moisture content of the dregs of a decoction of pharmaceutical factory is more up to more than 55%, naturally dry
The dry time is also very long, such as fresh bark is just reduced to after stacking indoors by the natural drying of 5 months, moisture content from 59%
44%；Fuel moisture is high, and burning is difficult；Traditional biomass fuel boiler is mostly using the side of drying or " drying+compression moulding "
Method reduces the moisture of biomass fuel, to ensure the stable burning of boiler and normal operation；Drying or " drying+compression moulding "
The use cost of boiler will be increased, the cost of " drying+compression moulding " virtually increases up to 1 times of original fuel cost
The consumption of the energy is added.Relatively high-moisture biomass boiler on the market at present, although much taking " suspension combustion+layer combustion "
The combustion system for overcoming high-moisture biomass fire retardant as possible, but because some biomass moisture are really too high, boiler operatiopn can often go out
Existing over-emitting black exhaust, burn insufficient, flue blockage and the bad conditions such as the thermal efficiency is low, pollutes environment and waste of energy.
Utility model content
The shortcomings that in order to which the prior art is overcome to refer to, the utility model provide a kind of gas-solid and mix combustion high moisture fuel steam copper
Stove, the high-moisture biomass fuel used save the processing charges of fuel, and ensure high without drying and compression moulding
Imitate after-flame high-moisture biomass fuel (such as moisture content is up to 60% dregs of a decoction, wet wood chip), not over-emitting black exhaust, boiler thermal efficiency
High, flue is not easy to plug, while has many advantages, such as compact-sized, light-weight, convenient for installation and maintenance.
The utility model solve technical solution that its technical problem uses for：Gas-solid mixes combustion high moisture fuel steam boiler,
Including burner block and boiler body, the boiler body is placed in the top of the burner block, and the boiler body includes water
Cold pipe, upper drum, convection tube, lower drum, energy-saving appliance and air preheater, the water cooling tube are vertical setting, the water cooling tube
Lower end connect the burner hearth of the burner block, the upper drum and lower drum are in horizontally disposed, the front end of the upper drum
The upper end of the water cooling tube is connected, the convection tube, lower drum, energy-saving appliance and air preheater are arranged on described down successively
The lower section at drum rear portion, the convection tube connect the rear end of the upper drum and the front end of the lower drum, the lower drum
Rear end is sequentially connected the energy-saving appliance and air preheater.
Using full film type wall structure, the outer wall of the water cooling tube is equipped with furnace wall, the stove for the water cooling tube and convection tube
Wall makes lightweight construction, is made of the shell molds plate of aluminium silicate fiber peacekeeping 0.5mm thickness, the fin in the convection tube by being stacked
Pipe is divided into several flues；Bare-tube wall conventional at present and convection bank relatively, the weight of boiler is lighter, and manufacture cost is more
Few, installation maintenance is also more convenient.
The energy-saving appliance uses H-type extended surface tube in-line structure, and the H-type extended surface tube includes tube body and tube wall arrangement is set
The fin put, the fin spacing are 25mm.While avoiding the flue gas from blocking, the heating surface of boiler is increased, improves changing for boiler
Thermal effect reduces the weight of energy-saving appliance, and weight is reduced up to 25% than conventional light pipe energy-saving appliance.
The air preheater uses screw tube type air preheater, including 57 × 2 large calibre threads pipes of Φ, quadrangle cloth
Φ 89 × 3.5 is equipped with to manage greatly.
The front side of the burner block is equipped with feed inlet, and the upside of the burner block is equipped with smoke outlet, the water cooling tube
Lower end connect at the smoke outlet, burner and gasification of biomass generator, institute are installed on rear side of the burner block
It states and high-order reciprocal grate and low level reciprocal grate is installed in the burner hearth of burner block, the front end connection of the high position reciprocal grate
At the feed inlet, the rear end of the high position reciprocal grate connects the front end of the low level reciprocal grate and described high-order reciprocal
The upright position of fire grate rear end is higher than the front end of the low level reciprocal grate；The gasification of biomass generator connects the burning
Device simultaneously provides fuel for the burner, before low level reciprocal grate described in the spray combustion mouth face of the burner in
Portion.Wherein, the rear end of the high-order reciprocal grate and the difference in height of the front end of low level reciprocal grate are 0.8~1.5 meter.
The rear end lower of the high position reciprocal grate is provided with the first blower device of 20~30 ° of sprays obliquely, high-moisture
Fuel enters high-order reciprocal grate by feed inlet first, is able to dry and lack fractional combustion on high-order reciprocal grate, later with
Certain difference in height is fallen to low level reciprocal grate front end, by red-hot flue gas and blower device into one in the process of whereabouts
Step drying and supporting, moisture therein are further purged, and light-weight part suspends after-flame in burner hearth, the part of weight weight
Fall in the middle front end of low level reciprocal grate, by burner thermal-flame it is combustion-supporting.
The burner block is equipped with the second blower device of 20~35 ° of sprays obliquely, the second air blast at the smoke outlet
Device lives the fuel barrier that uncombusted companion high-temperature flue gas flows up, and supplementing combustion-supporting air makes it further fire
To the greatest extent.The burner block is equipped with face arch and rear arch in splayed configuration distribution at the smoke outlet.
The steelframe of the fixed water cooling tube, upper drum, convection tube, lower drum, energy-saving appliance and air preheater is further included,
The steelframe is equipped with platform staircase, to repair.
The beneficial effects of the utility model are：This steam boiler burner block is made " gasification of biomass and burner+
The combining form of high-low position cant reciprocal grate ", burner hearth are interior combustion-supporting equipped with blower device；It can ensure efficient after-flame high-moisture life
Biomass fuel, such as the dregs of a decoction, wet wood chip；Its boiler body makes the double drum longitudinal water-tube boiler forms of Natural Circulation, upper pot
Z-shaped arrangement between cylinder, convection tube and lower drum, water cooling tube and between convection tube makes full film type wall structure, energy-saving appliance is made
Away from suitable H-type extended surface tube in-line structure, the big pipe of large calibre threads tubular air preheater quadrangle arrangement, furnace wall is complete light-duty structure
It makes, compact-sized, light-weight, convenient for installation and maintenance, boiler thermal efficiency is high.
Description of the drawings
Fig. 1 mixes combustion high moisture fuel steam boiler entirety main structure diagram for the utility model gas-solid.
Fig. 2 overlooks cut-away illustration for water-cooling wall and convection tube structure.
Fig. 3 is energy-saving appliance structure of the main view.
Fig. 4 is energy-saving appliance structure schematic side view
Fig. 5 overlooks cut-away illustration for air preheater structure.
Specific embodiment
The utility model is further detailed below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of gas-solid mixes combustion high moisture fuel steam boiler, including burner block and boiler body,
The boiler body is placed in the top of the burner block, and the boiler body includes water cooling tube 11, upper drum 12, convection tube
13rd, lower drum 14, energy-saving appliance 15 and air preheater 16, the water cooling tube 11 are vertical setting, the lower end of the water cooling tube 11
The burner hearth of the burner block is connected, the upper drum 12 and lower drum 14 are in horizontally disposed, the front end of the upper drum 12
Connect the upper end of the water cooling tube 11, the convection tube 13, lower drum 14, energy-saving appliance 15 and air preheater 16 cloth down successively
The lower section at 12 rear portion of upper drum is placed in, the convection tube 13 connects the rear end of the upper drum 12 and the lower drum 14
Front end, the rear end of the lower drum 14 are sequentially connected the energy-saving appliance 15 and air preheater 16.The front side of the burner block
Equipped with feed inlet 21, the upside of the burner block is equipped with smoke outlet, and the lower end of the water cooling tube 11 is connected at the smoke outlet,
Burner 4 and gasification of biomass generator 5 are installed, the furnace height of the burner block is on rear side of the burner block
3.8~6.8 meters, high-order reciprocal grate 31 and low level reciprocal grate 32 are installed in the burner hearth of the burner block, it is high-order reciprocal
Fire grate 31 is inclined to set with low level reciprocal grate 32, and the front end of the high position reciprocal grate 31 is connected at the feed inlet, institute
The rear end for stating high-order reciprocal grate 31 connects the front end of the low level reciprocal grate 32 and high-order 31 rear end of reciprocal grate
Upright position be higher than the low level reciprocal grate 32 front end, difference in height be 0.8~1.5 meter；The gasification of biomass hair
Raw device 5 connects the burner 4 and provides fuel for the burner 4, and the spray of the burner 4 is fired described in mouth face
The front middle part of low level reciprocal grate 32.The fixed water cooling tube 11, upper drum 12, convection tube 13, lower drum 14, section are further included
The steelframe 18 of energy device 15 and air preheater 16, the steelframe 18 is equipped with platform staircase 19, to repair.
The rear end lower of the high position reciprocal grate 31 is provided with the first blower device 33 of 20~30 ° of sprays obliquely, high
Moisture fuel enters high-order reciprocal grate 31 by feed inlet 21 first, is able to dry on high-order reciprocal grate 31 and lacks part and fires
It burns, is fallen later with certain difference in height to low level reciprocal grate front end, by red-hot flue gas and first in the process of whereabouts
The further drying of blower device 33 and supporting, moisture therein are further purged, and light-weight part suspends in burner hearth
After-flame, weight weight part fall in the middle front end of low level reciprocal grate, by burner thermal-flame it is combustion-supporting.The combustion
The second blower device 34 that furnace body is equipped with 20~35 ° of sprays obliquely at the smoke outlet is burnt, the second blower device 34 is unburned
The fuel barrier that most companion high-temperature flue gas flows up is lived, and is supplemented combustion-supporting air and made its further after-flame.The burning
Furnace body is equipped with face arch 22 and rear arch 23 in splayed configuration distribution at the smoke outlet, is further opened with checking in the burner block
Door and clean-out door.
As shown in Fig. 2, water screen tube 11 is mutually welded into full film type wall structure with band steel by Φ 51 or 60 pipes of Φ；Convection tube by
51 pipes of Φ are mutually welded into full film type wall structure with band steel, and the outer wall of the water cooling tube 11 is equipped with furnace wall 17, and the furnace wall 17 is made
Lightweight construction is made of the shell molds plate of aluminium silicate fiber peacekeeping 0.5mm thickness, the extended surface tube in the convection tube 13 by being stacked
131 are divided into several flues；Bare-tube wall conventional at present and convection bank relatively, the weight of boiler is lighter, and manufacture cost is more
Few, installation maintenance is also more convenient.
As shown in Figure 3 and Figure 4, the energy-saving appliance uses H-type extended surface tube in-line structure, and H-type extended surface tube is by 32 × 3 pipes of Φ
151 are welded with fin 152, and according to heating surface area is increased, flue gas is not easy to plug the practical experience for principle, H-type fin simultaneously
The length and width of pipe are 70 × 70mm, and pipe left and right sides fin gap 8mm, the spacing of whole pipe fin is 25mm.It avoids flue gas from blocking
While, the heating surface of boiler is increased, improves the heat transfer effect of boiler, reduces the weight of energy-saving appliance, than conventional light pipe section
Energy device reduces weight up to 25%.
As shown in figure 5, the air preheater uses screw tube type air preheater, including 57 × 2 heavy caliber spiral shells of Φ
Line pipe, quadrangle are disposed with Φ 89 × 3.5 and manage greatly.Biological fuel boiler generally preferably causes the dust stratification of tubular air preheater and blocks up
Plug, and be usually located on its quadrangle, quadrangle arrangement Φ 89 × 3.5 is managed greatly, then can ensure flue while heating surface is increased
Unimpeded do not block up.
By taking 20t/h, 1.25MP dregs of a decoction wet steamer as an example, the utility model boiler is than current conventional boiler combustion
More fully and stable, boiler thermal efficiency can improve 6%；Boiler body weight can reduce by 230%, and manufacture cost can reduce by 15%.
Claims (9)
1. a kind of gas-solid mixes combustion high moisture fuel steam boiler, including burner block and boiler body, which is characterized in that the pot
Furnace body is placed in the top of the burner block, and the boiler body includes water cooling tube, upper drum, convection tube, lower drum, energy saving
Device and air preheater, the water cooling tube are vertical setting, and the lower end of the water cooling tube connects the burner hearth of the burner block, institute
It is in be horizontally disposed with to state upper drum and lower drum, the upper end of the front end connection water cooling tube of the upper drum, the convection tube,
Lower drum, energy-saving appliance and air preheater are arranged in the lower section at the upper drum rear portion down successively, and the convection tube connects institute
The rear end of upper drum and the front end of the lower drum are stated, the rear end of the lower drum is sequentially connected the energy-saving appliance and air preheat
Device.
2. gas-solid according to claim 1 mixes combustion high moisture fuel steam boiler, which is characterized in that the burner block
Front side is equipped with feed inlet, and the upside of the burner block is equipped with smoke outlet, and the lower end of the water cooling tube is connected at the smoke outlet,
Burner and gasification of biomass generator on rear side of the burner block are installed, are equipped in the burner hearth of the burner block
High-order reciprocal grate and low level reciprocal grate, the front end of the high position reciprocal grate are connected at the feed inlet, and the high position is past
The rear end of multiple fire grate connects the front end of the low level reciprocal grate and the upright position of the high-order reciprocal grate rear end and is higher than
The front end of the low level reciprocal grate；The gasification of biomass generator connects the burner and is carried for the burner
For fuel, the front middle part of low level reciprocal grate described in the spray combustion mouth face of the burner.
3. gas-solid according to claim 1 or 2 mixes combustion high moisture fuel steam boiler, which is characterized in that the water cooling tube
With convection tube using full film type wall structure, the outer wall of the water cooling tube is equipped with furnace wall, the furnace wall by aluminium silicate fiber peacekeeping into
Type Shell Plate forms, and several flues are divided by the extended surface tube being stacked in the convection tube.
4. gas-solid according to claim 1 or 2 mixes combustion high moisture fuel steam boiler, which is characterized in that the energy-saving appliance
Using H-type extended surface tube in-line structure, the H-type extended surface tube includes tube body and the fin of tube wall arrangement setting, the fin
Spacing is 25mm.
5. gas-solid according to claim 1 or 2 mixes combustion high moisture fuel steam boiler, which is characterized in that the air is pre-
Hot device uses screw tube type air preheater.
6. gas-solid according to claim 2 mixes combustion high moisture fuel steam boiler, which is characterized in that the high position reciprocating furnace
The difference in height of the rear end of row and the front end of low level reciprocal grate is 0.8~1.5 meter.
7. gas-solid according to claim 2 mixes combustion high moisture fuel steam boiler, which is characterized in that the high position reciprocating furnace
The rear end lower of row is provided with the first blower device sprayed obliquely.
8. gas-solid according to claim 2 mix combustion high moisture fuel steam boiler, which is characterized in that the burner block in
The second blower device sprayed downwards is equipped at the smoke outlet.
9. gas-solid according to claim 2 mix combustion high moisture fuel steam boiler, which is characterized in that the burner block in
The face arch and rear arch in splayed configuration distribution are equipped at the smoke outlet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016212386021 | 2016-11-20 | ||
| CN201621238602 | 2016-11-20 |
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| Publication Number | Publication Date |
|---|---|
| CN207539881U true CN207539881U (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721447890.6U Active CN207539881U (en) | 2016-11-20 | 2017-11-03 | Gas-solid mixes combustion high moisture fuel steam boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028027A (en) * | 2018-07-06 | 2018-12-18 | 吉林省斯特尔科技有限公司 | Novel biomass boiler oil preheating and drying fire grate subsystem |
-
2017
- 2017-11-03 CN CN201721447890.6U patent/CN207539881U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028027A (en) * | 2018-07-06 | 2018-12-18 | 吉林省斯特尔科技有限公司 | Novel biomass boiler oil preheating and drying fire grate subsystem |
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