CN105571280A - Medium-low-temperature biomass fuel drying system utilizing solar energy and biomass energy - Google Patents
Medium-low-temperature biomass fuel drying system utilizing solar energy and biomass energy Download PDFInfo
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- CN105571280A CN105571280A CN201610024233.4A CN201610024233A CN105571280A CN 105571280 A CN105571280 A CN 105571280A CN 201610024233 A CN201610024233 A CN 201610024233A CN 105571280 A CN105571280 A CN 105571280A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
- F26B23/028—Heating arrangements using combustion heating using solid fuel; burning the dried product
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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Abstract
The invention relates to a medium-low-temperature biomass fuel drying system utilizing solar energy and biomass energy. The medium-low-temperature biomass fuel drying system comprises a solar greenhouse, a solar energy accumulating bed (1), an air condenser (3), a water bath dust remover (4), a heat source, an air heater (11), pipelines, valves and draught fans, wherein the pipelines are connected with the solar greenhouse, the solar energy accumulating bed (1), the air condenser (3), the water bath dust remover (4), the heat source and the air heater (11), and the valves and the draught fans are arranged on the pipelines. The solar energy accumulating bed (1) comprises an upper air bellow (1.1), a lower air bellow (1.1), a plurality of solar heat collecting and accumulating chambers (1.3) and a sealing cavity. The outer surface of the pipe walls of air guiding pipes (1.2) are coated with heat accumulating materials. The sealing cavity is formed by defining the upper air bellow (1.1), the lower air bellow (1.1), a front transparent panel (1.4), a bottom plate (1.5) with the nontransparent rear portion and side face, and side plates. All the solar heat collecting and accumulating chambers (1.3) are located in the sealing cavity. According to the medium-low-temperature biomass fuel drying system, drying can be conducted through a high-low potential energy combining manner, the solar energy is sufficiently and efficiently utilized, and it can be guaranteed that the drying process is smoothly conducted under the situation that the material humidity is high, and the number is large.
Description
Technical field
The invention belongs to the dry technology utilizing solar energy, refer to a kind of middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy particularly.
Background technology
Energy crisis in recent years in global range and the energy " fight " caused thus are being upgraded gradually, and current using energy source structure is still based on conventional energy resources such as coal, oil, natural gases simultaneously, the CO discharged during these mineral matter fuel combustions
2, flue dust, the harmful substance such as sulfide or nitrogen oxide, serious threat be also result in the living environment of the mankind, for this reason, the exploitation of new forms of energy, obtained vigorous growth in recent years, but emphasis all concentrates in industrial project and city, and agriculture aspect is only applied on solar energy warm booth, making little progress of other side.
Solar energy is also had vast field in rural area, and life of farmers quality also needs to increase substantially, and peasant also needs to become better-off rapidly.In the Land use systems of solar energy, utilize biomass power generation to be one of current effective mode, because the biomass fuel of biomass electric power plant is all stalk etc., be the discarded object in rural area, insufficient utilization, causes very large pollution by environment.But the requirement of biomass electric power plant to biomass fuel is high, and not only granularity has requirement, and moisture must lower than 25%.Statistics shows, the moisture of general biomass fuel is all more than 40%, at south China, special in Hunan, Guangxi, the rainy seasons such as Hainan are long, the area of high humidity, the moisture of biomass fuel is general all more than 60%, the visible drying to biomass fuel is exactly a very important technical process, and the current mostly Shi Qu power plant of this process completes, cost of transportation is caused to increase considerably, calculate with 100 tons of biomass fuels that moisture is 70%, if its moisture will be dropped to 25%, wherein just containing the water of 45 tons, and the cost that wet feed transport increases is that power plant can not bear.
For some material, as the dehydration of the agricultural product such as fruits and vegetables, and the drying of part low humidity biomass fuel, be just used alone solar energy drying enough.Such as, but for quite a few material, humidity >=70%, baking temperature need the biomass fuel of more than 80 DEG C and similar high humility material, are used alone solar energy drying and can not meet the demands.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy, the mode that height potential energy can be adopted to combine carries out drying, both fully, efficiently make use of solar energy, and carrying out smoothly of dry run can be ensured when the large quantity of humidity of materials more again.
For solving the problems of the technologies described above, a kind of middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy provided by the invention, comprise solar energy greenhouse, solar energy accumulation bed, aerial condenser, wet dust collector, thermal source, air heater, and connect valve, blower fan that the pipeline of each device and pipeline are arranged;
Described solar energy greenhouse is hermetically-sealed construction, its building structure is frame structure, end face and three are made up of PC sunlight board, safety glass, lucite or FRP plane skylight by sunny side, non-is energy storage wall by sunny side, the floor of solar energy greenhouse is porous concrete slab, porous concrete slab setting above ground level, for placing material to be dried, below for ventilating above it;
Described solar energy accumulation bed comprises the bellows of upper and lower, some solar heat-collection and heat-accumulation pipes and sealed chamber, solar heat-collection and heat-accumulation pipe comprises the wireway that tube wall has passage, the two ends of wireway are communicated with upper and lower bellows respectively, heat-storing material is laid with outside the tube wall of wireway, sealed chamber is enclosed by the panel of the bellows of upper and lower, transparent front, the lighttight base plate in rear portion and side and side plate and forms, and solar heat-collection and heat-accumulation Guan Jun is positioned at sealed chamber;
Described aerial condenser is columnar structured, and cylinder side has air import and export, turnover for air, and upper and lower nozzle is respectively equipped with gas tank, and two gas tanks are by tracheae Shu Liantong, for passing into gas to be cooled;
Described thermal source is connected with air heater, for heating the gas passed in air heater;
Have below the floor of described solar energy greenhouse above air inlet, floor and have two gas outlets, the top gas tank of the air inlet of solar energy greenhouse, solar energy greenhouse gas outlet, the top bellows of solar energy accumulation bed, the outlet of air heater and aerial condenser is through pipeline communication, the outlet of another gas outlet of solar energy greenhouse, the below bellows of solar energy accumulation bed and air heater is through pipeline communication, and the below gas tank of aerial condenser is connected with described wet dust collector.
In technique scheme, the heat-storing material laid outside described wireway tube wall is the mixture of artificial zeolite and metal dust, and in mixture, the weight content of artificial zeolite is not less than 70%.
Further, the granularity of described artificial zeolite is not more than 3mm.
In technique scheme, described panel is glass plate, and described base plate and side plate are the composite plate that plastic plate and warming plate are formed.
In technique scheme, described thermal source is living beings hot-blast stove.
In technique scheme, the energy storage wall of described solar energy greenhouse is built additional accumulation of energy mixed mortar by laying bricks or stones by air entrained concrete and rock wool heat-preservation layer and is formed, or the hollow brick masonry filling out accumulation of energy mixed mortar in being is formed, and the heat of transformation of described accumulation of energy mixed mortar is not less than 60kj/kg.
In technique scheme, the end face of described solar energy greenhouse is the large domatic inclined-plane of one side, but is not limited to this shape, and arch or triangle roofing etc. also can.
In technique scheme, the chamber internal surface of described solar energy greenhouse scribbles far-infrared reflection coating.
In technique scheme, described aerial condenser and interior tracheae bundle thereof are made up of steel, and tracheae surface scribbles anticorrosive paint.
In technique scheme, described solar energy greenhouse is minute-pressure room, and pressure is 30000 ~ 70000Pa, preferred 50000Pa.
Compared with prior art, beneficial effect of the present invention is: the solar energy greenhouse of structure optimization and the setting of solar energy accumulation bed, the mode that radiation and convective heat exchange combine can be adopted, make use of solar energy more fully, also solve the problem that existing solar heated green house can not use solar energy night simultaneously; The use of living beings thermal source and air heater, can utilize high potential to carry out high temperature force drying, improves drying efficiency.Take bark as material, the result of carrying out high temperature force drying test shows, the wind pushing temperature of high temperature force drying can higher than 200 DEG C, but no more than 250 DEG C, by to the test of other large number of biological matter fuel and analysis, advise that the high temperature force drying wind pushing temperature of general biomass fuel adopts 180 ~ 200 DEG C, wind speed is generally proper at 2.0 ~ 2.5m/s, under this operating mode, the rate of water loss of biomass fuel is significantly accelerated, arid cycle obviously shortens, economic benefit can be significantly improved, and test shows, in above-mentioned scope, wind pushing temperature higher biomass fuel dehydration rate is higher, the wind speed of hot blast is larger, the relative humidity of biomass fuel is also lower, in addition, thermal source and air heater, when solar energy deficiency, ensure that carrying out smoothly of dry run.
Accompanying drawing explanation
Fig. 1 is structure and the operation principle schematic diagram of one embodiment of the invention;
Fig. 2 is the structural representation of solar heat-preservation bed in Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the cross-sectional view of solar heat-collection and heat-accumulation pipe in Fig. 2;
Fig. 5 is the structural representation of aerial condenser in Fig. 1;
The B-B sectional view of Fig. 6 Fig. 5;
In figure: 1-solar energy accumulation bed (wherein: 1.1-bellows, 1.2-wireway, 1.3-solar heat-collection and heat-accumulation pipe, 1.4-panel, 1.5-base plate), 2.1,2.2,2.3,2.4,2.5-blower fan, 3-aerial condenser (wherein: 3.1-gas tank, 3.2-tracheae, 3.3-condenser casing), 4-wet dust collector, 5-PC sunlight board, 6-energy storage wall, 7-porous concrete slab, 8-material, 9.1 ~ 9.14-valve, 10-biomass thermal wind furnace, 11-air heater.
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in further detail:
As shown in Figure 1, a kind of middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy of the present invention, comprise solar energy greenhouse, solar energy accumulation bed 1, aerial condenser 3, wet dust collector 4, thermal source, air heater 11, and connect valve 9.1 ~ 9.14, blower fan 2.1 ~ 2.5 that the pipeline of each device and pipeline are arranged.Specific as follows:
Solar energy greenhouse is according to the difference of location, has any different in the orientation of layout, and the direction that its front should be just the strongest to solar radiation in principle, generally sits in the north facing the south on the Northern Hemisphere.The building structure of solar energy greenhouse is frame structure, and end face He Dong, west, three, south are made up of PC sunlight board 5 by sunny side.The physical characteristic of PC sunlight board 5 is: intensity high (anti-impact force is 40 times of glass, is 20 times of fiberglass), and light transmittance can reach 90%, good heat insulating (being 2 times of glass), lightweight (being 1/5 of glass), fire-retardant, not easily condense.North and non-be energy storage wall 6 by sunny side, energy storage wall 6 is built additional accumulation of energy mixed mortar by laying bricks or stones by air entrained concrete and rock wool heat-preservation layer and is formed, or fill out in being accumulation of energy mixed mortar hollow brick masonry form.Here accumulation of energy mixed mortar can be mixed by the graphite powder of job site, biomass electric power plant lime-ash, cement mortar and water, and the heat of transformation is not less than 60kj/kg.Common solar building thing or structures are generally triangle roofing or arch, and the large domatic end face of the preferred one side of the present embodiment, can increase solar energy heating surface area.The floor of solar energy greenhouse is porous concrete slab 7, porous concrete slab 7 about one meter of setting above ground level, for placing material 8 to be dried above it, below be ventilating duct, for ventilate.For strengthening accumulation of heat effect, energy storage wall 6 inner surface and porous concrete slab 7 surface can be smeared one deck and be about the thick accumulation of energy mixed mortar of 20mm.A fan hermatic door is respectively opened in east, the west side (being parallel to the both sides of paper in Fig. 1) of solar energy greenhouse, for placement and the taking-up of material 8, solar energy greenhouse is not windowed, and the seam crossing of its steel construction and PC sunlight board 5 requires to seal, to ensure the sealing of whole solar energy greenhouse.The chamber internal surface of solar energy greenhouse scribbles far-infrared reflection coating, makes indoor accumulation of heat effective, and homogeneous temperature.
Solar energy accumulation bed 1 as shown in Figures 2 to 4, comprises the bellows 1.1 of upper and lower, some solar heat-collection and heat-accumulation pipes 1.3 and sealed chamber.Each solar heat-collection and heat-accumulation pipe 1.3 includes the wireway 1.2 that tube wall has passage, the two ends of wireway 1.2 are communicated with upper and lower bellows 1.1 respectively, heat-storing material is laid with outside the tube wall of wireway 1.2, sealed chamber is enclosed by the panel 1.4 of the bellows 1.1 of upper and lower, transparent front, the lighttight base plate 1.5 in rear portion and side and side plate and forms, and solar heat-collection and heat-accumulation pipe 1.3 is all positioned at sealed chamber.The heat-storing material of the present embodiment is the mixture of artificial zeolite and metal dust, and in mixture, the weight content of artificial zeolite is not less than 70%, and play accumulation of heat effect, metal dust then mainly plays conductive force.Glass plate selected by the panel 1.4 of the present embodiment, can transmission sunshine being incubated; The composite plate that base plate 1.5 and side plate select plastic plate and warming plate to form, its poor thermal conductivity and intensity are better, play insulation and supporting role.Heat accumulation mode of the present invention selects solid adsorption type heat accumulation, and it has the advantages such as long-term heat accumulation, heat-storing device do not need thermal insulation, initial outlay low relative to sensible heat heat accumulation mode, and latent heat heat accumulation relatively, then there is the advantage that energy storage density is large.Solid heat storage material should have following characteristic: 1.) energy storage density is high; 2) ample supply and prompt delivery, low price; 3) material non-toxic, corrosion-free effect; 4) can regenerate and reuse; 5) adsorption capacity is large, more responsive to temperature between 30 ~ 100 DEG C; 6) absorption affinity is little, regeneration temperature is low, the residual volume of adsorbate is little after desorption.What meet above-mentioned requirements at present has zeolite, active carbon, silica gel, activated alumina, NACF.Corresponding adsorbate has water, methyl alcohol, ethanol, ammonia, chloro-fluoro-carbon kind.The present embodiment preferred size is not more than the artificial zeolite particle of 3mm, effective storage density of artificial zeolite is generally 600 ~ 700kj/kg, make the thermal efficiency of solar energy collection heat storage pipe 1.3 higher, select less granularity, fully contacting of gas and artificial zeolite particle can be guaranteed.The length of solar heat-collection and heat-accumulation pipe 1.3 and diameter then need to determine according to the load of aforementioned solar energy greenhouse, and the load of solar energy greenhouse is large, then select longer or that diameter is larger solar heat-collection and heat-accumulation pipe 1.3, vice versa.
Aerial condenser 3 as shown in Figure 5 and Figure 6, condenser casing 3.3 is columnar structured, cylinder side has air import and export, turnover for air, and upper and lower nozzle is respectively equipped with gas tank 3.1, and two gas tanks 3.1 are restrainted by tracheae 3.2 and are communicated with, for passing into gas to be cooled.Consider that hot and humid gas has certain corrosivity, aerial condenser 3 and interior tracheae 3.2 thereof are restrainted and are made up of steel, and tracheae 3.2 surface scribbles three layers of anticorrosive paint.Like this, hot and humid gas is flow at high speed in tracheae bundle 3.2, and normal temperature air then restraints outer flowing at tracheae 3.2, and after heat exchange, condensed water is discharged, and is used further to the drying in solar energy greenhouse after normal temperature air heating.
Wet dust collector 4 is for removing the dust in gas, and efficiency can reach more than 99%.
Thermal source can adopt conventional boiler etc., also hot-blast stove can be adopted, the present embodiment is due to the drying of the agricultural product mainly for rural area, agricultural byproducts and biomass fuel, fuel can be gathered materials on the spot, so the preferred biomass thermal wind furnace 10 of thermal source, because biomass thermal wind furnace 10 structure is simple, low to the requirement of fuel, and use cost is low, its flue-gas temperature can reach 700 ~ 800 DEG C, and the air themperature after heating is the highest more than 200 DEG C, so be very applicable to application of the present invention.Meanwhile, in the present embodiment, biomass thermal wind furnace 10 and air heater 11 are connected as a single entity, can occupation of land be saved.
The device of whole hothouse connects also as shown in Figure 1, the air inlet of band air-valve is had below the floor of solar energy greenhouse, above floor, side wall has the gas outlet of two band air-valves, the airflow direction in solar energy greenhouse is made to meet the rule of thermal current rising, the air inlet of solar energy greenhouse, a gas outlet of solar energy greenhouse, the top bellows 1.1 of solar energy accumulation bed 1, the outlet of air heater 11 and the top gas tank 3.1 of aerial condenser 3 are through pipeline communication, another gas outlet of solar energy greenhouse, the below bellows 1.1 of solar energy accumulation bed 1 and the outlet of air heater 11 are through pipeline communication, place necessary on pipeline is provided with valve 9.1 ~ 9.14 and blower fan 2.2 ~ 2.5, for realizing different operating modes, the corresponding position of solar energy greenhouse also can the instrumentation such as set temperature table, pressure gauge, is carried out monitoring and the operation of duty by special messenger in control room.The below gas tank 3.1 of aerial condenser 3 is connected with wet dust collector 4.
Operation principle of the present invention is as follows:
One) solar energy drying principle:
1.1) daytime, close hermatic door install material 8 to be dried in solar energy greenhouse after, make solar energy greenhouse be in air-tight state;
1.2) start blower fan 2.3, Open valve 9.11,9.12, other valve and blower fan are all in closed condition.Successively bleed, air pressure in solar energy greenhouse is evacuated to about 50000Pa, the drying test that we carry out using bark as material 8 shows, under this atmospheric pressure state, the dehydration rate of material 8 increases about 15 ~ 20% than at ambient pressure, more effectively can improve the drying efficiency of material 8 like this, and the air pressure in solar energy greenhouse controls can realize completely technically at about 50000Pa, cost also can control in lower scope;
1.3) then close blower fan 2.3 when the room pressure of the manometer display solar energy greenhouse in control room is 50000Pa, and close all valves, make indoor be in air-tight state.If outdoor air infiltrates into indoor, room pressure is raised to some extent, then as pressure >=60000Pa, repeat 1.2) to 1.3) and operation, guarantee room pressure≤50000Pa;
1.4) along with the rising of solar energy greenhouse room temperature, when temperature is greater than 30 DEG C, the moisture on material 8 surface starts evaporation.When in the humidity instrument display room of control room during relative humidity >=90%, open blower fan 2.3 and valve 9.11, 9.9, close other valve and blower fan, the hot and humid gas in solar energy greenhouse is made to enter aerial condenser 3, meanwhile open blower fan 2.2 and take out normal temperature air cooling down high-temperature high humidity gas, cooled hot and humid gas and condensed water enter wet dust collector 4, solar energy greenhouse dry goods is sent into by the normal temperature air heated, now valve 9.7, 9.8, 9.10, 9.13, 9.14 open, valve 9.1, 9.2, 9.5 and blower fan 2.1 close, solar energy greenhouse is in forced convertion heat drying state, blast velocity control is at about 2 ~ 2.5m/s,
1.5) when indoor relative humidity≤40% of the humidity instrument display solar energy greenhouse in control room, closeall blower fan and valve, make solar energy greenhouse be in air-tight state, repeat 1.1) to 1.4) operation, constantly utilize solar energy drying article.
Evening without solar radiation, solar energy greenhouse only by the heat of the feedbacks such as the energy-accumulation material on energy storage wall 6 and porous concrete slab 7, obvious deficiency compared with daytime.Therefore, will maintain good dry operating mode evening, need the energy that dependence solar energy accumulation bed on daytime 1 is collected and stored, the mode of operation of solar energy accumulation bed 1 is as follows:
2.1) daytime solar energy accumulation bed 1 accumulation of energy process be roughly: daytime, artificial zeolite particulate absorbent solar energy and temperature raise, moisture starts desorption from artificial zeolite particle, solar energy accumulation bed 1 starts accumulation of heat, in order to accelerate this process, while solar energy greenhouse is in forced convertion heat drying state, Open valve 9.1,9.4, the air flow part delivering to solar energy greenhouse after heating through aerial condenser 3 is entered solar energy accumulation bed 1, take away the moisture of artificial zeolite particle desorption, the hot and humid gas of generation sends into aerial condenser 3.When the humidity of solar energy accumulation bed 1 exit gas is less than 50%, can valve-off 9.1,9.4,9.5 and blower fan 2.1, make normal temperature air all deliver to solar energy greenhouse after aerial condenser 3 heats;
2.2) evening is when solar energy greenhouse mercury dropped is to less than 28 DEG C, then utilize the accumulation of heat dried material 8. of solar energy accumulation bed 1.Now, valve 9.1,9.4,9.6,9.12 is closed, and other valve and blower fan are all in opening, until the temperature of solar energy accumulation bed 1 is lower than the temperature of solar energy greenhouse, stop this process.
Two) warm force drying principle in:
When in the situations such as material 8 high humidity, quantity are many, the simple solar energy that relies on can not meet drying when requiring, and warm force drying in employing, operates as follows:
3.1) related valve of solar energy greenhouse and solar energy accumulation bed 1 and blower fan Close All.Open blower fan 2.4, start biomass thermal wind furnace 10, open blower fan 2.5, valve 9.14 simultaneously, normal temperature air is sent into air heater 11, the flue gas that biomass thermal wind furnace 10 is heated sends into air heater 11, and normal temperature air is become the high temperature low-humidity air of 120 ~ 200 DEG C in air heater 11 by flue gas, and this high temperature low-humidity air is sent into dried material 8 in solar energy greenhouse, the hot and humid gas formed after dry, sends into aerial condenser 3 by blower fan 2.3.Now, valve 9.8,9.10,9.7,9.11,9.9,9.13,9.14 is opened, other valve closing;
3.2) after hot and humid gas enters aerial condenser 3, start blower fan 2.2 and normal temperature air is sent into aerial condenser 3 with cooling down high-temperature high humidity gas, cooled gas and condensed water deliver to the outer row of wet dust collector 4.
Core of the present invention is the setting of the solar energy greenhouse of structure optimization, and the setting of solar energy accumulation bed 1, high efficiencyly make use of solar energy, have employed cheap biomass thermal wind furnace 10 thermal source and air heater 11 simultaneously, make drying system can adopt warm convective drying in pressure, forced convertion and radiant drying two kinds of drying modes are effectively combined, cover the shortage mutually, effectively improve drying efficiency and reduce cost, and by test, advantage and the practicality of minute-pressure drying are found, provide the dry minute-pressure value of practical recommendation, also sought by test and have found the wind pushing temperature of forced convertion drying and the relation of rate of water loss, recommend wind pushing temperature and the air supply velocity of the many biomass fuel convective dryings of wood fibre, directive function is served to practice.The present invention is particularly suitable for the biomass fuel drying of biomass fuel distribution centre and uses, significantly will reduce the cost of transportation of biomass electric power plant fuel so also for power plants generating electricity efficiency provides guarantee, simultaneously also for the investor of biomass fuel distribution centre hothouse brings good economic benefit.Cost of the present invention is low, efficiency is high, the hothouse of a kind of good and cheap environment-friendly type of can yet be regarded as.So its protection domain is not limited to above-described embodiment.Obviously, those skilled in the art can carry out various change and distortion to the present invention and not depart from the scope of the present invention and spirit, such as: end face and three adopt PC sunlight board 5 to be preferred versions of the present invention by sunny side, the safety glass adopting performance close, lucite, FRP plane skylight are also feasible; Heat-storing material selection artificial zeolite in solar heat-collection and heat-accumulation pipe 1.3 is also the most preferably scheme of heat-storing material of the present invention, its storage density is high, and heat accumulation is stablized, cost is extremely low, but the Conventional solid energy-accumulation material adopting other suitable, if active carbon, silica gel, activated alumina, NACF etc. are also feasible; Biomass thermal wind furnace 10, due to its advantage in structure and use cost etc., is also the first-selection of thermal source in the present invention, but adopts other existing equipments such as boiler also can realize technical solution of the present invention as thermal source; The material etc. of the material of panel 1.4 and base plate 1.5, the top surface shape of solar energy greenhouse, energy storage wall 6 also can adjust according to field condition; Aerial condenser 3 is also not limited to adopt steel matter, utilizes other resistant materials also can make; Service pressure in solar energy greenhouse controls the selection after 50000Pa has taken into account operability, technique effect and cost factor, and this Stress control also all has good effect etc. at 30000 ~ 70000Pa.If these are changed and distortion belongs in the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these changes and distortion.
Claims (11)
1. one kind utilizes the middle low-temperature biological matter fuel stem drying system of solar energy and biomass energy, it is characterized in that: comprise solar energy greenhouse, solar energy accumulation bed (1), aerial condenser (3), wet dust collector (4), thermal source, air heater (11), and connect valve, blower fan that the pipeline of each device and pipeline are arranged;
Described solar energy greenhouse is hermetically-sealed construction, its building structure is frame structure, end face and three are made up of PC sunlight board (5), safety glass, lucite or FRP plane skylight by sunny side, non-is energy storage wall (6) by sunny side, the floor of solar energy greenhouse is porous concrete slab (7), porous concrete slab (7) setting above ground level, for placing material (8) to be dried, below for ventilating above it;
Described solar energy accumulation bed (1) comprises, the bellows (1.1) of below, some solar heat-collection and heat-accumulation pipes (1.3) and sealed chamber, solar heat-collection and heat-accumulation pipe (1.3) comprises the wireway (1.2) that tube wall has passage, the two ends of wireway (1.2) are communicated with upper and lower bellows (1.1) respectively, heat-storing material is laid with outside the tube wall of wireway (1.2), sealed chamber is by upper, the bellows (1.1) of below, the panel (1.4) of transparent front, rear portion and side lighttight base plate (1.5) and side plate enclose and form, solar heat-collection and heat-accumulation pipe (1.3) is all positioned at sealed chamber,
Described aerial condenser (3) is for columnar structured, cylinder side has air import and export, turnover for air, upper and lower nozzle is respectively equipped with gas tank (3.1), and two gas tanks (3.1) are by tracheae (3.2) Shu Liantong, for passing into gas to be cooled;
Described thermal source is connected with air heater (11), for heating the gas passed in air heater (11);
Air inlet is had below the floor of described solar energy greenhouse, two gas outlets are had above floor, the air inlet of solar energy greenhouse, a gas outlet of solar energy greenhouse, the top bellows (1.1) of solar energy accumulation bed (1), the outlet of air heater (11) and the top gas tank (3.1) of aerial condenser (3) are through pipeline communication, another gas outlet of solar energy greenhouse, the below bellows (1.1) of solar energy accumulation bed (1) and the outlet of air heater (11) are through pipeline communication, the below gas tank (3.1) of aerial condenser (3) is connected with described wet dust collector (4).
2. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy according to claim 1, it is characterized in that: the heat-storing material laid outside described wireway (1.2) tube wall is the mixture of artificial zeolite and metal dust, and in mixture, the weight content of artificial zeolite is not less than 70%.
3. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy according to claim 2, is characterized in that: the granularity of described artificial zeolite is not more than 3mm.
4. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy as claimed in any of claims 1 to 3, it is characterized in that: described panel (1.4) is glass plate, described base plate (1.5) and side plate are the composite plate that plastic plate and warming plate are formed.
5. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy as claimed in any of claims 1 to 3, is characterized in that: described thermal source is living beings hot-blast stove (10).
6. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy as claimed in any of claims 1 to 3, it is characterized in that: the energy storage wall (6) of described solar energy greenhouse is built additional accumulation of energy mixed mortar by laying bricks or stones by air entrained concrete and rock wool heat-preservation layer and formed, or the hollow brick masonry filling out accumulation of energy mixed mortar in being is formed, and the heat of transformation of described accumulation of energy mixed mortar is not less than 60kj/kg.
7. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy as claimed in any of claims 1 to 3, is characterized in that: the end face of described solar energy greenhouse is the large domatic inclined-plane of one side.
8. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy as claimed in any of claims 1 to 3, is characterized in that: the chamber internal surface of described solar energy greenhouse scribbles far-infrared reflection coating.
9. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy as claimed in any of claims 1 to 3, it is characterized in that: described aerial condenser (3) and interior tracheae (3.2) bundle thereof are made up of steel, and tracheae (3.2) surface scribbles anticorrosive paint.
10. the middle low-temperature biological matter fuel stem drying system utilizing solar energy and biomass energy as claimed in any of claims 1 to 3, it is characterized in that: described solar energy greenhouse is minute-pressure room, pressure is 30000 ~ 70000Pa.
The 11. middle low-temperature biological matter fuel stem drying systems utilizing solar energy and biomass energy according to claim 10, it is characterized in that: described solar energy greenhouse is minute-pressure room, pressure is 50000Pa.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610024233.4A CN105571280A (en) | 2016-01-14 | 2016-01-14 | Medium-low-temperature biomass fuel drying system utilizing solar energy and biomass energy |
| PCT/CN2016/113999 WO2017121261A1 (en) | 2016-01-14 | 2016-12-31 | Medium-low-temperature biomass fuel drying system using solar energy and biomass energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610024233.4A CN105571280A (en) | 2016-01-14 | 2016-01-14 | Medium-low-temperature biomass fuel drying system utilizing solar energy and biomass energy |
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| CN201610024233.4A Pending CN105571280A (en) | 2016-01-14 | 2016-01-14 | Medium-low-temperature biomass fuel drying system utilizing solar energy and biomass energy |
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| Country | Link |
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| CN (1) | CN105571280A (en) |
| WO (1) | WO2017121261A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105953542A (en) * | 2016-06-28 | 2016-09-21 | 杨阿林 | Hot air source and solar energy double-purpose drying room |
| WO2017121261A1 (en) * | 2016-01-14 | 2017-07-20 | 中盈长江国际新能源投资有限公司 | Medium-low-temperature biomass fuel drying system using solar energy and biomass energy |
| CN110715541A (en) * | 2019-10-14 | 2020-01-21 | 南京航空航天大学 | High-temperature agricultural product drying equipment and method based on supercritical carbon dioxide energy storage |
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| CN108195151B (en) * | 2018-01-09 | 2023-08-29 | 深圳职业技术学院 | Heat accumulating type solar dryer |
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| CN105571280A (en) * | 2016-01-14 | 2016-05-11 | 中盈长江国际新能源投资有限公司 | Medium-low-temperature biomass fuel drying system utilizing solar energy and biomass energy |
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| CN110715541A (en) * | 2019-10-14 | 2020-01-21 | 南京航空航天大学 | High-temperature agricultural product drying equipment and method based on supercritical carbon dioxide energy storage |
| CN110715541B (en) * | 2019-10-14 | 2024-05-28 | 南京航空航天大学 | High-temperature agricultural product drying equipment and method based on supercritical carbon dioxide energy storage |
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| Publication number | Publication date |
|---|---|
| WO2017121261A1 (en) | 2017-07-20 |
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