CN106152233B - A kind of multifunctional steam based on heat accumulation/air heating method and apparatus - Google Patents

Abstract

The multifunctional steam based on heat accumulation/air heating method and apparatus that the present invention provides a kind of, integrate heat production, heat accumulation and heat supply.Using storage heats such as trough-electricity, renewable energy and intermittent industrial exhaust heats；When needing with heat, air is sent into, high temperature hot wind is obtained by heat exchange, it is all or part of to be used as product, and available hot-blast outlet mixer selector valve adjusts ventilation temperature；High temperature hot wind can also exchange heat with heat exchanger and produce saturation or superheated steam as product；Low temperature hot wind after cooling is Ke Xunhuanliyong or as hot wind output of products；The present invention can solve middle-size and small-size fossil-fuel boiler hot wind or steam supply system there are high pollution, energy consumption is high, operational flexibility is poor, operating cost is high the problems such as, meet while hot wind and steam are supplied and realize heat energy recycling, reach energy-saving and emission-reduction purpose；Furthermore the utilization of heat-storage technology makes the present invention efficiently use intermittent industrial exhaust heat and renewable energy, realizes electric power and Heating Adjustment, is suitable for that large-scale promotion uses.

Description

A kind of multifunctional steam based on heat accumulation/air heating method and apparatus

Technical field

The present invention relates to energy conservation, energy storage, electric power and the technical fields such as heating power peak regulation and Thermal Power Engineering, be a kind of collection heat production, Heat accumulation, heat supply can be applied to chemical industry, do in a kind of multifunctional steam based on heat accumulation/air heating method and apparatus of one Dry, food processing, laundry, waste heat recycling, renewable energy utilization, heating and the fields such as electric power and Heating Adjustment.

Background technique

Heat has irreplaceable role for daily life and industrial production, in heating, drying, food processing and chemical industry The fields such as production are widely used, and mainly include the various ways such as hot water heating, air heating, steam heating and electric heat supply.Hot wind It is important way therein with steam heating.

Air heating is by the hot-air heated through heat exchanger directly to the mode for needing hot body to heat.This heating For mode due to using forced convertion, heat production speed is higher.Patent CN201210470596 discloses a kind of curing oven energy-saving hot-blast Waste heat is sent to circulating line via kiln and exhaust fan using discarded heat source by system, by control hot wind exhaust fan, The temperature in curing oven is adjusted in air-introduced machine and circulating fan, it is ensured that the suitable curing degree of printed line；Patent CN201210520821 provides a kind of biomass energy automatically pure hot-air system and its application method, utilizes reproducible life Substance energy generates pure heat by biomass direct-fired and biomass gasification technology after heat exchange of heat pipe and cyclone separator Wind has the advantages that environmentally protective, hot blast feeding ability is strong；Patent CN201220306989 discloses a kind of adjustable heat of temperature Wind system, hot wind enter dedusting in filter air compartment through combustor, by control system hot and cold air are mixed in certain proportion To ensure the output temperature of hot wind.

Steam heating is to carry heat from heat source using the form of steam, send through heat supply network to required place, supplies according to steam Answer the difference of pressure that can be divided into low pressure, middle pressure and high pressure steam system.The steam that vapour system provides, especially superheated steam, There is extensive use.Patent CN201310725230 discloses a kind of superheated steam drying device and method, and feature is The superheated steam of fluid bed dryer discharge is returned after being pressurizeed all the way by circulating fan and is flowed by being divided into two-way after cyclone dust removal Change bed dryer, another way enters vapour compression machine by washer and is sent into internal heater, realizes the interior of superheated steam Portion recycles；Patent CN201310706064.9 has invented a kind of high-efficiency steam heat supply and residual neat recovering system, by storage heater, Vapour system and condensate system organically combine, so that boiler heat realizes cascade utilization；Patent CN201320863998 is mentioned A kind of steam heat recovery system has been supplied, using water circulating pump, the higher condensed water of temperature in water tank has been delivered to heating and is set It is live heating in standby, the condensed water to cool down is transmitted back in water tank, and water tank outlet switch passes through switch valve It is controlled, the reasonable distribution for realizing energy resources utilizes.

Because there is high dirt in the hot wind or steam supply system of current middle-size and small-size fossil-fuel boiler, especially coal-burning boiler Dye, the problems such as energy consumption is high, operational flexibility is poor, operating cost is higher, it has also become environmental problem is especially serious haze sky now One of arch-criminal of gas, for problems, the existing clear stipulaties of country, it is desirable that shut down small scall coal-fired boiler and small-sized thermoelectricity Unit.In addition, the peak regulation pressure of China's power grid is increasingly sharpened, it is badly in need of the technology of development effective use trough-electricity.Meanwhile in recent years Renewable Energy Development is rapid, especially wind-powered electricity generation and solar power generation, but the ratio of abandonment and abandoning light is still higher, exists very Big waste.If can be improved the utilization rate of the renewable energy such as wind energy, solar energy, the fossil fuels such as coal can be greatly decreased Usage amount, reduce pollution to environment, be that better condition is created in the existence of the mankind.Therefore urgent need exploitation novel low-cost, The high technology of low pollution, energy utilization rate substitutes the steam/heat wind generating system based on small scall coal-fired boiler etc., and can use In the efficient utilization of renewable energy and industrial process waste heat.

Summary of the invention

It is an object of the invention to be directed to above-mentioned problem, a kind of based on the more of heat accumulation of trough-electricity can efficiently be utilized by providing Function steam/heat wind heat supply method and device, to solve the high pollution and operational flexibility of middle-size and small-size fossil-fuel boiler at present The problem of difference, and can be used for the efficient utilization of renewable energy and industrial process waste heat.

For this purpose, the present invention provides a kind of multifunctional steam based on heat accumulation/air heating method and apparatus, packet Include hot wind generating unit, steam generating unit and loop control unit；

The hot wind generating unit includes circulating fan, air compartment and heat accumulation room；The circulating fan and air compartment are respectively used to The conveying of air and pressure distribution；The heat accumulation room includes insulating layer, air distribution plate, grain bed, electrical heating elements, heat storage brick, temperature Spend pressure controller and particle separator；The air distribution plate is located at grain bed lower part, provides even fluidizing sky for grain bed fluidisation Gas；The grain bed is located at heat accumulation room lower part, and effect is to strengthen air-particle two phase flow and heat accumulation room in grain bed fluidisation Interior heat storage brick heat transfer；The electrical heating elements and heat storage brick are located in the middle part of heat accumulation room, for realizing heat store function and Hot wind generates function (utilizing for industrial exhaust heat, heating element function can not have to)；The temperature, pressure controller and particle point It is located at heat accumulation room top from device, wherein temperature, pressure controller and electrical heating elements, circulating fan circuit and distribution be throughout Temperature, pressure be connected with flow sensor, can control and adjust the indoor heat accumulation speed of heat accumulation and temperature and when hot wind generates Hot blast temperature, pressure and flow；The particle separator use cyclone dust removal principle, including hot-wind inlet, hot-blast outlet and Particle outlet can be divided into two strands in the hot wind that hot-blast outlet obtains for the isolation of purified containing the hot wind with particle, one process Two-port valve can adjust ventilation temperature, another stock-traders' know-how inflow-rate of water turbine control by outlet mixer selector valve as high temperature hot wind output of products Device processed enters Heat Room heating water and generates steam；The insulating layer is covered on heat accumulation room and heat exchange chamber interior walls, for it is extraneous Insulation, to reduce thermal losses；

The steam generating unit includes heat exchanger tube, oxygen-eliminating device, water pump and drum；The heat exchanger tube is located in Heat Room Portion is divided into upper, middle, and lower part, is alternatively referred to as water preheater with the heat exchanger tube of top-down hot air heat exchange, lower part, is used for It is preheated to by the deaerated water for entering drum, the heat exchanger tube at middle part is also referred to as evaporator, for by the cycling hot in drum It water is vaporized into saturated vapor (saturated vapor also can be used as output of products), the heat exchanger tube on top is also referred to as superheater, for that will be saturated Steam is heated as high pressure superheated steam, and high pressure superheated steam is by two-port valve as output of products；The oxygen-eliminating device and water pump The deoxygenation of demineralized water and the offer of conveying power are provided；The drum includes drum ontology, temperature and pressure detecting and control Device and safety device processed, for carrying out Natural Circulation by rise and fall pipe and middle part heat exchanger tube (evaporator), and to production Raw saturated vapor carries out steam-water separation, and obtained dry steam is re-fed into top heat exchanger tube (superheater) overheat；

The loop control unit includes Heat Room, gravity settling chamber and valve；The Heat Room include flow controller, Tangential inlet, filtering blast cap and return airway, the flow controller are located at the top of Heat Room, and are used for together with two-port valve The flow and flow rate of hot wind is controlled, and regulates and controls high temperature product hot wind and produces the ratio of steam hot wind；The tangential inlet Positioned at the top of Heat Room, function is to make hot wind enter Heat Room with tangential direction to form eddy flow, and reinforcing is changed with steam generation The heat exchange of heat pipe, and a small amount of particle that may be carried in hot wind is promoted to be segregated into gravity settling chamber from gas；The filtering Blast cap and return airway are located at Heat Room bottom, wherein filtering blast cap is on return airway entrance top, it is residual in hot wind for stopping The particle stayed enters return airway, and particle is drained to gravity settling chamber, and return airway passes through the pure hot wind after heat exchange Triple valve enters the circulation that circulating fan realizes heat contained by air-flow and air-flow, this part hot wind can be used as low temperature hot wind product By being supplied outside triple valve；The gravity settling chamber contains check valve and ramped aisle, for recycling particle remaining in hot wind Into grain bed；The valve includes triple valve, two-port valve, check valve and mixer selector valve, and the triple valve is located at air intake, is used Hot air circulation after heat exchange utilizes, low temperature hot wind product supply and the wind-warm syndrome into circulating fan regulate and control；The two-port valve Positioned at the exit of Heat Room and superheated steam, the output for hot wind and steam product supplies control；The check valve is located at In gravitational settling room, for the one-way flow of the hot wind containing residual particles, particle one-way flow here can also be by of short duration Triple valve is closed to be purged；The mixer selector valve is located at after hot-blast outlet two-port valve, for carrying out temperature tune to institute's hot wind supply Section.

Preferably, the shape of the heat storage brick can be spherical, square or cuboid, honeycomb type, other abnormally-structured Module or the combination between them, material can for the researching of sensible heat storage material of organic or inorganic, latent heat (phase transformation) heat accumulating, Composite construction heat accumulating or the combination between them, the use temperature range of heat accumulation brick are 0-850 DEG C.

Preferably, the granular materials of the grain bed can be sand, aluminium oxide, glass, ceramics, heat-resistant polymer Deng, grain shape can be it is spherical or aspherical.

Preferably, the material of the electrical heating elements is high temperature corrosion-resisting alloy or refractory ceramics.

Preferably, the insulating layer can be single-layer or multi-layer, and material is low thermal conductivity material, including foam plastic Material, charing cork, vermiculite, foam glass, ceramic fibre, light thermal-insulation cotton, microporous calcium silicate, perlite and mineral wool etc..

Preferably, the circulating fan is low-power consumption high temperature centrifugal blower.

The invention has the benefit that will be stored up using resources such as trough-electricity, renewable energy and intermittent industrial exhaust heats The indoor heat storage brick of heat is heated to design storage temperature or more, and efficiently uses the sensible heat in use temperature range and latent heat storage Heat；When needing using heat, especially air is sent into grain bed by peak of power consumption, low-power consumption circulating fan, makes grain bed stream Change and carry out heat exchange with porous heat storage brick bed and obtain high temperature hot wind, particle returns to fluidized-bed layer by cyclone dust removal, entirely Portion or part hot wind can be used as output of products, and can adjust ventilation temperature by hot-blast outlet mixer selector valve；High temperature hot wind can also Water is heated by segmented pipe heat exchanger, makes water vapor, and saturated vapor is obtained by the water separator in drum, is satisfied It can further be overheated with steam, obtain dry high pressure superheated steam, saturated vapor and superheated steam here can be used as Output of products；The significantly reduced hot wind of temperature after steam produces may be carried on a small quantity by entering gravity settling chamber removing Particle realize the recycling of wind and heat through return airway and circulating fan into fluidized bed is entered, this part hot wind can also be made For low temperature hot wind output of products；The present invention can solve to supply currently based on the hot wind or steam of the fossil-fuel boilers such as middle-size and small-size fire coal It answers high pollution existing for system, the problems such as energy consumption is high, operational flexibility is poor, operating cost is higher, is meeting hot wind and steam is more Function can realize heat energy recycling while supply, improve heat utilization rate, achieved the purpose that energy-saving and emission-reduction, meanwhile, The utilization of heat-storage technology makes present invention effective use renewable energy and intermittence industrial exhaust heat, realizes electric power and Heating Adjustment, It is suitable for that large-scale promotion uses.

Detailed description of the invention

Fig. 1 is a kind of multifunctional steam based on the heat accumulation/air heating method provided for the specific embodiment of the invention With the structural schematic diagram of device.

In figure:

1, triple valve；2, circulating fan；3, air compartment；4, heat accumulation room；5, Heat Room；6a, 6b, 6c, heat exchanger tube；7, deoxygenation Device；8, water pump；9, drum；10,21, two-port valve；11, insulating layer；12, air distribution plate；13, grain bed；14, electrical heating elements；15, Heat storage brick, 16, temperature, pressure controller；17, particle separator；18, hot-wind inlet；19, hot-blast outlet；20, particle outlet； 22, flow controller；23, tangential inlet；24, blast cap is filtered；25, return airway；26, gravity settling chamber；27, check valve；28, Mixer selector valve

Specific embodiment

Fig. 1 be the specific embodiment of the invention provide a kind of multifunctional steam based on heat accumulation/air heating method and The structural schematic diagram of device, below with reference to the accompanying drawings and specific embodiments to further illustrate the technical scheme of the present invention.

By taking trough-electricity utilizes as an example, a specific embodiment of the invention are as follows: during night low price paddy electricity, be such as not required to supply heat Wind and steam can individually open electrical heating elements (14) and carry out filling heat to heat storage brick (15), when needing to supply hot wind or steam, It opens circulating fan (2) and introduces air into heat accumulation room (4), heated by electrical heating elements (14), and is strong by grain bed (13) Change heat transfer, while heat storage brick (15) is carried out to fill heat, and the high-temperature hot-air after heating is laggard via particle separator (17) purification Enter in Heat Room (5) and shunt, a part (or all) is used for by two-port valve (21) for thermal output, for high temperature air temperature It can be adjusted by mixer selector valve (28), another part (or all) for heating heat exchanger tube (6a/6b/6c) and utilizing reflux wind Road (25) and gravity settling chamber (26) realize recycling for hot wind and particle；After demineralized water enters oxygen-eliminating device (7) deoxygenation, by water It pumps (8) pressurized delivered to heat to lower part heat exchanger tube (water preheater) (6c), the hot water after heating is sent into drum (9), and drum passes through Tedge and down-comer are connect with middle part heat exchanger tube (evaporator) (6b), are steamed by the saturation that Natural Circulation generates certain pressure Vapour, the saturated vapor of generation after steam-water separation, after being sent into top heat exchanger tube (superheater) (6a) overheat, pass through two-way in drum Valve (10) carries out output supply；When daytime is for closing electrical heating elements (14), when only needing to supply hot wind during high price peak electricity Unlatching circulating fan (2), two-port valve (21) set to zero flow controller (22), and triple valve (1) opens air intake, and closing follows Ring hot-wind inlet generates hot wind for exporting supply using the heat of heat storage brick (15) storage, and can be adjusted by mixer selector valve (28) Save institute's heat supply air temperature；When only needing steam, open circulating fan (2), water pump (8), two-port valve (10), check valve (27) and Flow controller (22), triple valve (1) close air intake, open circulating air entrance, close two-port valve (21), are passed through desalination Water generates high pressure superheated steam for exporting supply using the heat of heat storage brick (15) storage；Hot wind and steam are needed when simultaneously When, circulating fan (2), water pump (8), two-port valve (10), two-port valve (21), check valve (27) and flow controller (22) are opened, Triple valve (1) opens air intake and circulating air entrance simultaneously, is passed through demineralized water, and the heat stored using heat storage brick (15) is same When generate hot wind and high pressure superheated steam and carry out heat distribution for exporting supply, and by control flow controller (22).

Due to getting worse for environmental pollution, there are many cities to implement " coal changes electricity " engineering, heat supply since Beijing Mode is gradually transitioned into electric heat supply from traditional coal heat supply, this just proposes biggish challenge to how reducing electric cost. Using boilers heated electrically supply steam as embodiment, using a kind of multifunctional steam/air heating based on heat accumulation of the present invention Method and apparatus continuously provide the superheated steam (0.5MPa (absolute pressure, the same below), 200 DEG C) of 1000kg.Looking into steam table can 0.5MPa, the enthalpy of 200 DEG C of superheated steam are 2855.90kJ/kg, be 20 DEG C for temperature the enthalpy of demineralized water be 83.92kJ/kg.It is assumed that the heat loss of system is 3%, it can be used for the heat supply of 16h after heat storage brick heat accumulation 8h, by these data meters Calculation can obtain, and when continuously providing superheated steam (0.5MPa, 200 DEG C) of 1 000kg using the device of the invention, need to consume about 793.8 degree of electricity provide, big industry, non-preferential treatment, 1-10 kilovolts of electricity rates according to Jiangsu Province " Soviet Union's valence work [2011] 358 " text Are as follows: the 1.112 yuan/kilowatt hour in peak, flat 0.667 yuan/kilowatt hour of section, 0.322 yuan/kilowatt hour of low ebb, according to 8 hours low ebbs of utilization Electric heat accumulation is used for 8 hours flat sections and 8 hour peak period, and average computation can obtain, if supplying steam using boilers heated electrically, often Degree electricity can save 0.5675 yuan, then 793.8 degree of electricity can save about 450.5 yuan.

The present invention is described by embodiment, and those skilled in the art know, is not departing from spirit of the invention In the case where range, various changes or equivalence replacement can be carried out to these features and embodiment.In addition, in finger of the invention It leads down, can modify to these features and embodiment to adapt to particular situation and material without departing from spirit of the invention And range.Therefore, the present invention is not limited to the particular embodiment disclosed, in fallen with claims hereof Embodiment shall fall within the protection scope of the present invention.

Claims (8)

1. a kind of multifunctional steam based on heat accumulation/air heating method and apparatus, including hot wind generating unit, steam generation list Member and loop control unit, it is characterised in that: the hot wind generating unit includes circulating fan (2), air compartment (3) and heat accumulation room (4)；The circulating fan (2) and air compartment (3) are respectively used to the conveying and pressure distribution of air；The heat accumulation room (4) includes protecting Warm layer (11), air distribution plate (12), grain bed (13), electrical heating elements (14), heat storage brick (15), temperature, pressure controller (16) and Particle separator (17), the air distribution plate (12) are located at grain bed (13) lower part, provide even fluidizing air for grain bed fluidisation, The grain bed (13) is located at heat accumulation room (4) lower part, and effect is to strengthen air-particle two phase flow when grain bed (13) fluidize It conducts heat with the heat storage brick (15) in heat accumulation room (4)；The electrical heating elements (14) and heat storage brick (15) are located in heat accumulation room (4) Portion generates function for realizing the store function and hot wind of heat；The temperature, pressure controller (16) and particle separator (17) it is located at heat accumulation room (4) top, wherein temperature, pressure controller (16) and electrical heating elements (14) and circulating fan (2) circuit And temperature, the pressure of distribution throughout are connected with flow sensor, can control and adjust the storage heat release rate in heat accumulation room (4) Hot blast temperature, pressure and flow when being generated with temperature and hot wind；The particle separator (17) is former using cyclone dust removal Reason, including hot-wind inlet (18), hot-blast outlet (19) and particle outlet (20), for containing the isolation of purified with particle hot wind, The hot wind that hot-blast outlet (19) obtains can be divided into two strands, one is used as high temperature hot wind output of products by two-port valve (21), can Ventilation temperature is adjusted by outlet mixer selector valve (28), another stock-traders' know-how overcurrent amount controller (22) enters Heat Room (5) and heats aquatic products Raw steam；The insulating layer (11) is covered on heat accumulation room (4) and Heat Room (5) inner wall, for the insulation with the external world, to reduce heat Loss；

The steam generating unit includes heat exchanger tube (6a/6b/6c), oxygen-eliminating device (7), water pump (8) and drum (9)；The heat exchange Pipe (6a/6b/6c) is located inside Heat Room (5), is divided into upper, middle, and lower part, and top-down hot air heat exchange, lower part Heat exchanger tube (6c) is alternatively referred to as water preheater, for being preheated to by the deaerated water for entering drum (9), the heat exchanger tube at middle part (6b) is also referred to as evaporator, for the circulating hot water in drum (9) to be vaporized into saturated vapor, the heat exchanger tube (6a) on top Claim superheater, for saturated vapor to be heated as high pressure superheated steam, high pressure superheated steam is by two-port valve (10) as production Product output, or the saturated vapor being vaporized into is directly as output of products；The oxygen-eliminating device (7) and water pump (8) are respectively used to desalination The deoxygenation of water and the offer of conveying power；The drum (9) include drum ontology, temperature and pressure detect and control device and Safety device, for carrying out Natural Circulation by rise and fall pipe and middle part heat exchanger tube (evaporator) (6b), and to generated Saturated vapor carries out steam-water separation, and obtained dry steam is re-fed into top heat exchanger tube (superheater) (6a) overheat；

The loop control unit includes Heat Room (5), gravity settling chamber (26) and valve (27)；The Heat Room (5) includes Flow controller (22), tangential inlet (23), filtering blast cap (24) and return airway (25), the flow controller (22) are located at The top of Heat Room (5), and with two-port valve (21) together for controlling the flow and flow rate of hot wind, and regulate and control high temperature product heat The ratio of wind and production steam hot wind；The tangential inlet (23) is located at the top of Heat Room (5), function be make hot wind with Tangential direction enters Heat Room (5) and forms eddy flow, strengthens the heat exchange with steam generation heat exchanger tube, and promoting may carrying in hot wind A small amount of particle gravity settling chamber (26) are segregated into from gas；The filtering blast cap (24) and return airway (25), which are located at, to be changed Hot cell (5) bottom, wherein filtering blast cap (24) is on return airway (25) entrance top, for stop in hot wind remaining particle into Enter return airway (25), and particle is drained to gravity settling chamber (26)；Return airway (25) is by the pure Low Temperature Thermal after heat exchange The circulation or low temperature hot wind that wind enters heat contained by circulating fan (2) realization air-flow and air-flow by triple valve (1) are as production Product are exported by triple valve (1)；The gravity settling chamber (26) contains check valve (27) and ramped aisle, and being used for will be in low temperature hot wind Remaining particle recycling enters grain bed (13)；The valve include triple valve (1), two-port valve (10,21), check valve (27) and Mixer selector valve (28), the triple valve (1) are located at air intake, utilize for the hot air circulation after exchanging heat, low temperature hot wind product supplies The wind-warm syndrome answered and enter circulating fan (2) regulates and controls；The two-port valve (10,21) is located at going out for Heat Room (5) and superheated steam At mouthful, the output for hot wind and steam product supplies control；The check valve (27) is located in gravity settling chamber (26), is used for The one-way flow of hot wind containing residual particles, particle one-way flow here can be blown by the way that triple valve (1) is momentarily closed It sweeps；The mixer selector valve (28) is located at after hot-blast outlet two-port valve (21), for carrying out temperature adjusting to institute's hot wind supply.

2. a kind of multifunctional steam based on heat accumulation/air heating method and apparatus according to claim 1, feature exist In: the shape of the heat storage brick (15) can be spherical, square or cuboid, honeycomb type or the combination between them, material Material can be the researching of sensible heat storage material of organic or inorganic, latent heat (phase transformation) heat accumulating, composite construction heat accumulating or they it Between combination, the use temperature range of heat storage brick (15) material is 0-850^oC。

3. a kind of multifunctional steam based on heat accumulation/air heating method and apparatus according to claim 1, feature exist In: heat storage brick (15) filling forms porous bed, after grain bed (13) fluidizes, into porous heat storage brick (15) bed, wherein Limitation space fluidisation is formed, with augmentation of heat transfer.

4. a kind of multifunctional steam based on heat accumulation/air heating method and apparatus according to claim 1, feature exist In: the granular materials of the grain bed (13) can be sand, aluminium oxide, glass, ceramics or heat-resistant polymer, grain shape It can be spherical or aspherical.

5. a kind of multifunctional steam based on heat accumulation/air heating method and apparatus according to claim 1, feature exist In: the material of the electrical heating elements (14) can be high temperature corrosion-resisting alloy or refractory ceramics.

6. a kind of multifunctional steam based on heat accumulation/air heating method and apparatus according to claim 1, feature exist It can be single-layer or multi-layer in: the insulating layer (11), material is low thermal conductivity material, including foamed plastics, charing are soft Wood, vermiculite, foam glass, ceramic fibre, light thermal-insulation cotton, microporous calcium silicate, perlite and mineral wool.

7. a kind of multifunctional steam based on heat accumulation/air heating method and apparatus according to claim 1, feature exist In: the circulating fan (2) is low-power consumption high temperature centrifugal blower.

8. a kind of multifunctional steam based on heat accumulation/air heating method and apparatus according to claim 1, feature exist In: system provides superheated steam, saturated vapor, hot wind, and ventilation temperature and steam pressure are adjustable.