CN102818257A - Heat accumulating type direct-fired boiler using biomass fuel - Google Patents

Heat accumulating type direct-fired boiler using biomass fuel Download PDF

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Publication number
CN102818257A
CN102818257A CN2012103278378A CN201210327837A CN102818257A CN 102818257 A CN102818257 A CN 102818257A CN 2012103278378 A CN2012103278378 A CN 2012103278378A CN 201210327837 A CN201210327837 A CN 201210327837A CN 102818257 A CN102818257 A CN 102818257A
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boiler
combustion
equipment
heat
fuel
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CN2012103278378A
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Chinese (zh)
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朱海生
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朱海生
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Priority to CN2012103278378A priority Critical patent/CN102818257A/en
Publication of CN102818257A publication Critical patent/CN102818257A/en

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    • Y02E20/348

Abstract

The invention discloses a heat accumulating type direct-fired boiler using a biomass fuel. The heat accumulating type direct-fired boiler comprises a boiler body, a heat accumulating type combustor, a smoke discharge and dust removal device, a fuel charge device, an ash removal device and an automatic control and safety protection device. The heat accumulating type direct-fired boiler using the biomass fuel disclosed by the invention applies a new heat accumulating type high temperature air combustion technology; a shuttle valve switches so that two heat accumulation chambers are operated alternately in heat accumulation and heat release states; the afterheat of smoke is efficiently recovered, and combustion air is preheated to more than 1,000 DEG C; the biomass fuel is fully combusted in the high temperature low oxygen environment, and due to unique combustion and smoke discharge modes, a high temperature area is formed in the combustion space of the hearth, so radiation heat transfer in the hearth is intensive without needing inefficient energy-consuming equipment such as coal economizers and air preheaters; therefore, the heat efficiency of the whole boiler is greatly improved; and according to requirements, the boiler can be designed as a direct-fired boiler that uses solid, liquid and gas fuels, and has the same characteristics, such as efficient combustion heat transfer, obvious energy conservation and environmental friendliness.

Description

Heat accumulating type biomass fuel direct-combustion boiler

Technical field

The present invention relates to a kind of heat accumulating type biomass fuel direct-combustion boiler, this equipment belongs to boiler industry and new forms of energy boiler technology field.

Background technology

As everyone knows; " boiler " is a kind of heat generation equipment or heat-exchange apparatus that utilizes fuel combustion or the heating of other thermals source to produce steam or hot water; The custom heat generation equipment that will have a burner is referred to as boiler in the industry, and the heat generation equipment that does not have burner is referred to as waste heat (used heat) boiler.Boiler has been widely used in the every field of national economy such as power station, petrochemical industry, chemical industry, light industry, environmental protection and life heating as important power-equipment, bringing into play important thermal power transfer effect.

Boiler: the difference by fuel type can be divided into solid fuel fired boiler (like coal-burning boiler, oil shale and biomass fuel boiler etc.), liquid fuel fired boiler (like oil burning boiler, alcohols boiler and waste liquid boiler etc.), gaseous fuel boiler (like natural gas boiler, gas boiler, methane boiler and exhaust boiler etc.) and used heat (waste heat) boiler; Can be divided into by the structure difference: smaller hard flour pancake boiler (multitubular boiler), water-tube boiler, fire tube boiler (horizontal package boiler) etc.

Coal-burning boiler is divided into station boiler (being mostly big-and-middle-sized coal-powder boiler) and Industrial Boiler (being mostly small-sized grate furnace).The complication system equipment that coal-burning boiler generally is made up of combustion apparatus (coal burner or grate firing fire grate), burner hearth and water-cooling wall, boiler tube bundle (miniature boiler), economizer, air preheater, desulfurating dust-removing equipment and air-introduced machine etc.Equipment such as boiler tube bundle, economizer and air preheater are thick, and heat exchange efficiency is low, metal consumption is big, and equipment manufacturing cost and maintenance cost are all very high.

The coal-fired wet steamer of low pressure (below the 3.9MPa) low capacity (below the 40T/H), evaporation heat accounts for the 70-92% of total caloric receptivity, and these heats mainly are to be born by the heat exchange of furnace wall cooling and boiler tube bundle, and the thermal efficiency of boiler is generally at 70-80%; Mesohigh (3.9-10MPa) intermediate size (40-220T/H) coal-fired steam boiler, evaporation heat accounts for the 53-64% of total caloric receptivity, and these heats just can be satisfied by the furnace wall cooling heat exchange, and boiler tube bundle generally no longer is set, and the thermal efficiency of boiler is at 85-92%; The big coal-fired superheated steam boiler of capacity (more than the 410T/H) of super-pressure (more than the 10MPa); Evaporation heat only accounts for 40% of total caloric receptivity; Heat overheated and heat again increases, and will put into more radiation heat transfer face in the burner hearth and realize that the thermal efficiency of boiler is about 90%.

Mostly oil-burning gas-fired boiler is middle-size and small-size hot water and or wet steamer.Small-sized oil-burning gas-fired boiler is through optimal design; The packaged boiler of forming by the economizer of the smoke pipe of fuel-firing gas-firing burner, flue (burner hearth and the water-cooling wall that are equivalent to coal-burning boiler), two to three backhauls tube bank (boiler tube bundle that is equivalent to coal-burning boiler) and back-end ductwork etc.; The structure of this equipment is compact than coal-burning boiler; Heat exchange efficiency also increases, metal consumption lacks relatively, and the thermal efficiency of oil-burning gas-fired boiler is higher than the coal-burning boiler with class at 85-90%.

Biomass fuel boiler is the new forms of energy boiler that progressively grows up later in the fossil energy crisis.Medium-sized biomass fuel station boiler; The evaporation capacity of producing like east Industrial Boiler Group Co.,Ltd is at the station boiler of 35-130T/H; Its system architecture and coal-fired power station boiler are basic identical; Be made up of combustion apparatus, burner hearth, back-end ductwork and smoke abatement device etc., this series boiler is produced saturated vapor or superheated steam through the heat exchange of water-cooling wall, superheater, reheater and economizer, reduces flue-gas temperature; Again through air preheater reclaim fume afterheat, hot blast is combustion-supporting, further reduces flue-gas temperature.Small-sized biomass fuel industry boiler (below the 60T/H) is present the most widely used biomass fuel boiler; This stove generally adopts the structure of coal-fired horizontal quick-action furnace: biomass fuel combustion siege, intermediate arrangement by the bottom are made up of the burner hearth of water-cooling wall, the smoke pipe tube bank of top setting and the economizer of back-end ductwork etc.; The problem that this stove exists mainly contains: heat convection faces such as smoke pipe tube bank and economizer, and equipment is huge, heat exchange efficiency is low, metal consumption is big, the cost of equipment and maintenance cost are all very high; Simultaneously, the tube bank of horizontally disposed smoke pipe is because of using the serious dust stratification of all very big biomass fuel of water content and flying dust amount, coking, even the obstruction smoke pipe, influences the efficient operation of boiler, the accident of boiler booster also very easily takes place, for hidden danger has been buried in safety in production.

The heat exchange proportion of burner hearth is maximum in total heat of boiler, and radiation heat transfer is the strongest, efficient in the burner hearth heat exchange, and radiation heat transfer is the main heat exchange form of burner hearth, and the radiation heat transfer amount accounts for 95% of burner hearth heat.And the set equipment such as boiler tube bundle, economizer and air preheater of conventional boiler are huge, the heat convection face of operation poor efficiency, mainly are in order to reduce exhaust gas temperature, to reclaim fume afterheat to greatest extent.If can on fuel combustion and burner hearth, adopt new technology and advanced equipment; Improve efficiency of combustion, reduce exhaust gas temperature; And above-mentioned heat convection face simplified, thereby improve effectively boiler the thermal efficiency, reduce equipment cost, reduce the fault and the maintenance cost of equipment.

The content of invention

Heat accumulating type biomass fuel direct-combustion boiler of the present invention adopts high-temperature air burning (HTAC) technology to solve an above-mentioned difficult problem well.

The HTAC technology is at the high temperature (1 that solves fuel (solid, liquid, gas); 000-1,250 ℃) under the prerequisite of efficient (99.9%) burning, also have the function of low temperature (about 150 ℃) smoke evacuation; Adopt the high efficient heat exchanging system under the hot environment that this technological boiler is made up of water-cooling wall and radiation recuperator; Its heat transfer intensity is higher than conventional boiler heat convection face far away, and the thermal efficiency of whole stove can reach 90-95%, is superior to oil-burning gas-fired boiler.Characteristics such as this stove and accessory has that system is simple, compact conformation, energy-saving effect are remarkable.

The HTAC technology is a brand-new combustion technology that is born at combustion field early 1990s; This techniques make use heat storage carries out the recovery of the limit with the waste heat of high-temperature flue gas, is used for warm-up combustion-supporting air again, and preheat temperature is up to 1; 000 ℃; Far above the preheat temperature that adopts heat exchanger, the high-temperature air combustion promoter after the employing preheating can greatly improve the efficiency of combustion of fuel, thoroughly solves the igniting of low calorie fuels burning and takes off fiery problem; Stove internal combustion intensity is strengthened greatly after adopting the HTAC technology, has strengthened the radiation heat transfer in the stove simultaneously, improves the heat exchange efficiency of burner hearth; The combustion zone of HTAC technology does not have tangible flame kernel, uniform distribution of temperature field, and average ignition temperature is low than the temperature of localized hyperthermia's flame combustion, avoids the service life of the local ablation of furnace wall and heat-transfer surface, prolongation equipment; The HTAC technology can also effectively suppress the growing amount of NOx and dioxin; Discharged flue gas is cooled off rapidly, also can imitate to stop the synthetic once more of dioxin, and the discharge capacity of NOx and dioxin significantly reduces in the flue gas, is beneficial to the protection environment.

The HTAC technology is organically formed a perfect energy-efficient combustion heating system with flue gas waste heat recovery technology, HTAC and control technology; Technological the combining with boiler of HTAC can be played the effect of bringing out one's strengths to make up for one's weaknesses, have the meaning of innovation.Boiler on this brand-new meaning has been overturned the notion of conventional boiler, and higher technical merit makes it have the extremely strong market competitiveness.

Heat accumulating type biomass fuel direct-combustion boiler of the present invention has solved the problem that the HTAC technology combines with boiler technology well, this boiler mainly by boiler body, heat storage type combustion equipment, control automatically and safety features etc. is formed; Boiler body is made up of fire grate and drive unit, burner hearth, water-cooling wall and radiation recuperator, to realize solid fuel, the conveying of lime-ash and the high efficient heat exchanging in the burner hearth; Heat storage type combustion equipment is made up of paired regenerator, air and flue gas reversal valve and reverse driven gear, is used for organizationally efficient burning, discharged at lower temperature flue gas; Automatically control and safety features are made up of industrial computer, Programmable Logic Controller, temperature, pressure regulation meter etc., are used for accurately control burning, guarantee device security.

Efficient burning, energy-conservation heating system that the heat storage type combustion equipment of this boiler is made up of paired regenerator, air and flue gas reversal valve and reverse driven gear etc.A regenerator in the system adds hot-air, and another regenerator is by flue gas heating (accumulation of heat); After normal temperature air added the regenerator of hot-air by the reversal valve entering, combustion air was heated near fire box temperature (generally than low 50-100 ℃ of fire box temperature) at short notice, and high temperature air gets into the organizationally efficient HTAC of burner hearth, is beneficial to and carries out the hyperthermia radiation heat exchange.Meanwhile, the high-temperature flue gas after the burner hearth internal combustion is discharged through another regenerator, and high-temperature flue gas is given heat storage recovery waste heat wherein with sensible heat transfer at short notice, and the low-temperature flue gas after the reduction temperature is through the reversal valve discharging.Reduction along with the regenerator temperature that adds hot-air; Raise gradually by the regenerator temperature of flue gas heating; When the low-temperature flue gas temperature of discharging is elevated to the design temperature about 150 ℃; The duty exchange (reverse operation) of reversal valve switching-over, two regenerator: the regenerator that promptly added hot-air was originally added hot-air by the regenerator of flue gas heating originally now now by flue gas heating, repeated above-mentioned flow process ... Commutate once more until reversal valve and to get back to previous duty.

Reversal valve switches with certain frequency like this, makes the alternation under accumulation of heat and heat release state of two regenerator, and the limit that has realized the high-temperature flue gas waste heat reclaims (flue gas low-temperature discharging) and HTAC efficiently.

The HTAC technology of heat accumulating type biomass fuel direct-combustion boiler of the present invention system is equally applicable to oil-burning gas-fired boiler; This technical equipment adapts to the national conditions of China fully; The type selecting that can be used for newly constructed boiler equipment; Can also be used for the technological transformation of the lower old boiler equipment of efficient, all can receive remarkable result energy-saving and cost-reducing, the protection environment.When this technical equipment can be brought remarkable economic efficiency and social benefit for us, also help the level of utilizing of the technical merit that improves China's boiler and new forms of energy resource.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.

Fig. 1 is the process flow diagram of one embodiment of the present invention

Fig. 2 is a kind of embodiment sketch map of boiler body of the present invention

Fig. 3 is a kind of embodiment sketch map of heat storage type combustion equipment of the present invention

The specific embodiment

Referring to Fig. 1, heat accumulating type biomass fuel direct-combustion boiler comprises: by boiler body 1, heat storage type combustion equipment 2, smoke abatement device 3, biomass fuel charging equipment 4, fuel-firing gas-firing equipment 5, combustion air supply equipment 6, deashing device 7, fume emission equipment 8, control and safety features 9 are formed automatically.

Referring to Fig. 2, boiler body 1 is made up of fire grate 101, fire grate drive unit 102, burner hearth 103, water-cooling wall 104 and radiation recuperator 105.Fire grate 101 adopts traveling-grate stoker or reciprocal grate; Burner hearth 103 is made up of steel framework, furnace wall, ceiling and fire door fire-resistant and insulation material.Water-cooling wall 104 adopts fin panel casing or fin water-cooling wall; Radiation recuperator 105 adopts screen formula heat exchanger.

Referring to Fig. 3, heat storage type combustion equipment 2 is made up of paired regenerator 201 and 202, air and flue gas reversal valve 203 and reverse driven gear 204; Regenerator is made up of housing, flame-proof thermal insulation material and heat storage; Heat storage is selected ceramic honey comb or fire-resistant bead for use, also can both use simultaneously, and heat storage can divide low-temperature heat accumulating section and high-temperature heat accumulation section two parts when both use simultaneously, and the low-temperature heat accumulating section adopts ceramic honey comb, high-temperature heat accumulation section to adopt fire-resistant bead.Air and flue gas commutating device are made up of air and flue gas reversal valve and driving mechanism, and air and flue gas reversal valve are selected swinging or through type pipeline reversal valve for use, driving mechanism adopt electronic, pneumatic or hydraulic pressure as driving force.

Smoke abatement device 3 is made up of pernicious gas adsorption plant, deduster, ash removing equipment and air compressor.

Biomass fuel charging equipment 4 is formed by promoting last strip and constant feeder.

Fuel-firing gas-firing equipment 5 is divided into by the fuel type difference: the fuel oil supply equipment is made up of fuel reservoir, filter, petrolift, overflow valve, electric control valve, magnetic valve, stop valve, spray gun and pipeline; Gas supply equipment is by the combustion gas storage tank or go into gas trunk line, filter, pressure regulator, electric control valve, emergency shutdown valve, magnetic valve, stop valve, spray gun and pipeline and form.Fuel lance is decided according to employed fuel: when using liquid fuel, select atomization of liquid spray gun for use, when using gases fuel, select gas spray gun for use; The mode subregion that HTAC adopts multiple gun to arrange is supplied with fuel, so that bring into play the advantage of High Temperature Air Combustion better, can also reduce NOx growing amount in the flue gas significantly in the time of the overheavy firing heat exchange, and is energy-efficient, be beneficial to environmental protection.

Combustion air supply equipment 6 is for fuel combustion provides oxygen, for fire box temperature agitation air is provided evenly; Form by air blast, butterfly valve, motorized adjustment butterfly valve, pipeline.The ignition temperature of in the combustion air supply equipment, controlling burner hearth through adjusting combustion air supply is to satisfy the requirement of heat exchange, and the adjusting of combustion air supply is employed in to install frequency converter on the air blast additional or on air supply line, install the motorized adjustment butterfly valve additional and realizes.

Deashing device 7 is made up of flue-dust retainer and conveying worm.

Fume emission equipment 8, with burner hearth burning after draw, discharge among the atmosphere by the flue gas behind regenerator, air and the flue gas commutating device; Form by air-introduced machine, butterfly valve, pipeline and chimney.In fume emission equipment, control the negative pressure of burner hearth through the discharge capacity of regulating flue gas, to satisfy the requirement of heat exchange, the adjusting of smoke discharge amount is employed in to install frequency converter on the air-introduced machine additional or on flue, install the motorized adjustment butterfly valve additional and realizes.

Automatically control and safety features 9 are made up of industrial computer, Programmable Logic Controller, furnace temperature adjusting apparatus, oxygen content of smoke gas controller, furnace pressure adjusting apparatus, frequency converter, burner control, thermocouple and low-voltage electrical apparatus.Automatically the control function is controlled the reversing combustion of boiler automatically, fire box temperature, combustion chamber draft, flue gas oxygen content is automatically adjusted, to satisfy the requirement of boiler for producing; Functions such as the blowout protection of safety system, overload protection and operational factor monitoring are guaranteed the safe and reliable to operation of system equipment.

Above-mentioned embodiment is just for ease of carrying out detailed explanation to the present invention, and unrestricted practical range of the present invention.

Claims (9)

1. heat accumulating type biomass fuel direct-combustion boiler is by boiler body (1), heat storage type combustion equipment (2), smoke abatement device (3), biomass fuel charging equipment (4), fuel-firing gas-firing equipment (5), combustion air supply equipment (6), deashing device (7), fume emission equipment (8), control and safety features (9) are formed automatically; It is characterized in that: described boiler body (1) is made up of fire grate (101), fire grate drive unit (102), burner hearth (103), water-cooling wall (104) and radiation recuperator (105); Described heat storage type combustion equipment (2) reaches (202), air and flue gas reversal valve (203) by paired regenerator (201) and reverse driven gear (204) is formed; Regenerator (201) and (202) are made up of housing, refractory material, insulation material and heat storage; Described smoke abatement device (3) is made up of pernicious gas adsorption plant, deduster, ash removing equipment and air compressor; Described biomass fuel charging equipment (4) goes up strip by lifting and constant feeder is formed; Described fuel-firing gas-firing equipment (5) is divided into by the fuel type difference: the fuel oil supply equipment is made up of fuel reservoir, filter, petrolift, overflow valve, electric control valve, magnetic valve, stop valve, spray gun and pipeline; Gas supply equipment is by the combustion gas storage tank or go into gas trunk line, filter, pressure regulator, electric control valve, emergency shutdown valve, magnetic valve, stop valve, spray gun and pipeline and form; Described combustion air supply equipment (6) is made up of air blast, butterfly valve, motorized adjustment butterfly valve, pipeline; Described deashing device (7) is made up of flue-dust retainer and conveying worm; Described fume emission equipment (8) is made up of air-introduced machine, butterfly valve, pipeline and chimney; Described automatic control and safety features (9) are made up of industrial computer, Programmable Logic Controller, furnace temperature adjusting apparatus, oxygen content of smoke gas controller, furnace pressure adjusting apparatus, frequency converter, burner control, thermocouple and low-voltage electrical apparatus.
2. heat accumulating type biomass fuel direct-combustion boiler according to claim 1; It is characterized in that: the exquisiteness that described boiler body (1) only is made up of burner hearth (103), water-cooling wall (104) and the radiation recuperator (105) on the fire grate (101) of bottom and top, equipment efficiently; Need not conventional boiler tube bundle, economizer and the air preheater that is equipped with of traditional coal-burning boiler, these are huge, complicated, the equipment of poor efficiency.
3. heat accumulating type biomass fuel direct-combustion boiler according to claim 1; It is characterized in that: the heat storage in the regenerator (201) in the described heat storage type combustion equipment (2) and (202) is selected ceramic honey comb or fire-resistant bead or ceramic honey comb and fire-resistant bead for use, and both use simultaneously; Heat storage divides low-temperature heat accumulating section and high-temperature heat accumulation section two parts when two kinds of materials use simultaneously, and the low-temperature heat accumulating section adopts ceramic honey comb, high-temperature heat accumulation section to adopt fire-resistant bead.
4. heat accumulating type biomass fuel direct-combustion boiler according to claim 1 is characterized in that: air in the described heat storage type combustion equipment (2) and flue gas reversal valve (203) are selected swinging reversal valve or through type pipeline reversal valve for use; Reverse driven gear (204) adopts electronic, pneumatic or hydraulic-driven.
5. heat accumulating type biomass fuel direct-combustion boiler according to claim 1 is characterized in that: described smoke abatement device (3) installs desulfurizer additional when using coal, forms flue gas desulfurization and dedusting equipment.
6. heat accumulating type biomass fuel direct-combustion boiler according to claim 1 is characterized in that: described fuel-firing gas-firing equipment (5) opens furnace igniting, heat temperature raising for using solid-fuelled heat accumulating type direct-combustion boiler, being mainly used in; For fuel-firing gas-firing class boiler, then be main combustion apparatus; The mode subregion that spray gun in the fuel-firing gas-firing equipment (5) adopts multiple gun to arrange is supplied with fuel, can bring into play the advantage of high-temperature air burning (HTAC) technology better, efficient burning, energy-conserving and environment-protective.
7. heat accumulating type biomass fuel direct-combustion boiler according to claim 1 is characterized in that: fire grate (101) in the described boiler body (1) and fire grate drive unit (102); Strip and constant feeder in the lifting in the described biomass fuel charging equipment (4); Flue-dust retainer in the described deashing device (7) and conveying worm are the special equipment that is provided with of solid fuel heat accumulating type direct-combustion boiler, then need not to be equipped with the said equipment for fuel-firing gas-firing class heat accumulating type direct-combustion boiler.
8. heat accumulating type biomass fuel direct-combustion boiler according to claim 1; It is characterized in that: control fire box temperature and peroxide air coefficient through regulating the combustion air supply in the described combustion air supply equipment (6); To satisfy the requirement of high efficiency boiler, safe operation, the adjusting of combustion air supply is employed in to install frequency converter on the air blast additional or on the combustion air pipeline, install the motorized adjustment butterfly valve additional and realizes.
9. heat accumulating type biomass fuel direct-combustion boiler according to claim 1; It is characterized in that: the negative pressure of controlling burner hearth in the described fume emission equipment (8) through the discharge capacity of regulating flue gas; To satisfy the requirement of safe operation of the boiler, the adjusting of smoke discharge amount is employed in to install frequency converter on the air-introduced machine additional or on flue, install the motorized adjustment butterfly valve additional and realizes.
CN2012103278378A 2012-09-07 2012-09-07 Heat accumulating type direct-fired boiler using biomass fuel CN102818257A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103672869A (en) * 2013-01-18 2014-03-26 北京神雾环境能源科技集团股份有限公司 Pulverized coal boiler capable of exhausting smoke
CN104976616A (en) * 2015-08-05 2015-10-14 中国东方电气集团有限公司 Low-calorific-value fuel gas and high-temperature air burning furnace with water wall
CN105864749A (en) * 2016-05-24 2016-08-17 大震锅炉工业(昆山)有限公司 High-temperature heat accumulation energy-saving boiler
CN108534221A (en) * 2018-04-23 2018-09-14 山东驰域环保科技有限公司 The alternative environment protection warming stove of straw from village clean fuel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202158650U (en) * 2011-06-08 2012-03-07 刘伟义 Chain type double-drum biomass particle gasification combustion hot water environmental friendly boiler
CN102607267A (en) * 2012-03-20 2012-07-25 朱海生 Regenerative high-temperature air combustion energy-saving environment-friendly shuttle-type kiln

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202158650U (en) * 2011-06-08 2012-03-07 刘伟义 Chain type double-drum biomass particle gasification combustion hot water environmental friendly boiler
CN102607267A (en) * 2012-03-20 2012-07-25 朱海生 Regenerative high-temperature air combustion energy-saving environment-friendly shuttle-type kiln

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103672869A (en) * 2013-01-18 2014-03-26 北京神雾环境能源科技集团股份有限公司 Pulverized coal boiler capable of exhausting smoke
CN103672869B (en) * 2013-01-18 2016-07-06 北京神雾环境能源科技集团股份有限公司 Can bleeder pulverized-coal fired boiler
CN104976616A (en) * 2015-08-05 2015-10-14 中国东方电气集团有限公司 Low-calorific-value fuel gas and high-temperature air burning furnace with water wall
CN104976616B (en) * 2015-08-05 2018-05-18 中国东方电气集团有限公司 Low heat value burnt gas high-temperature air combustion furnace with water-cooling wall
CN105864749A (en) * 2016-05-24 2016-08-17 大震锅炉工业(昆山)有限公司 High-temperature heat accumulation energy-saving boiler
CN108534221A (en) * 2018-04-23 2018-09-14 山东驰域环保科技有限公司 The alternative environment protection warming stove of straw from village clean fuel

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Application publication date: 20121212