CN101148593A - Biomass gasification method capable of conveniently regulating and controlling temperature and device thereof - Google Patents
Biomass gasification method capable of conveniently regulating and controlling temperature and device thereof Download PDFInfo
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- CN101148593A CN101148593A CNA2006100963917A CN200610096391A CN101148593A CN 101148593 A CN101148593 A CN 101148593A CN A2006100963917 A CNA2006100963917 A CN A2006100963917A CN 200610096391 A CN200610096391 A CN 200610096391A CN 101148593 A CN101148593 A CN 101148593A
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Abstract
The present invention relates to biomass gasifying technology, and is especially biomass gasifying process and apparatus with easy temperature control. The process of the present invention includes the steps of feeding material, sealing, igniting, gasifying and cleaning; and in the gasifying step, the biomass gas temperature in the outlet of the gasifying furnace is lower than 200 deg.c. The apparatus includes one gasifying furnace body, one cooling layer with cooling liquid in the temperature of 40-350 deg.c and one heat exchanger for cooling the cooling liquid for reuse. The present invention has utilization of gasifying afterheat, effective control of the reaction temperature and other parameters, capacity of controlling the temperature of the biomass gas in the outlet of the gasifying furnace and effectively improved quality of the biomass gas.
Description
Technical field
The present invention relates to a kind of biomass gasification technology, but be in particular a kind of biomass gasification method and equipment thereof of conveniently regulating and controlling temperature.
Technical background
Biomass energy is the renewable energy source of a kind of cleaning of almost growing on trees on the earth, is one of mankind's main energy sources of depending on for existence, and the whole world only has about 1% to be used as energy utilization by the biomass that photosynthesis generates every year at present.Along with the energy dilemma in the whole world is more and more serious,, particularly making full use of of agriculture and forestry organic waste material also seemed more and more important to effective utilization of biomass energy.
Gasifying biomass is the good approach of the high-level utilization of biomass energy, and gasification technology is meant and utilizes oxygen in the air, oxygen carrier or water vapor as vaporized chemical, the organic matter transformation such as carbon in the biomass become the process of inflammable gas.Gasifying biomass will be finished by vapourizing furnace, it answers process very complicated, different along with the conditions such as type, technical process, reaction conditions, vaporized chemical kind, raw material properties and grinding particle size of vapourizing furnace, its reaction process is also inequality, vapourizing furnace commonly used has fixed bed biomass gasification furnace and biomass fluid bed gasification furnace, and the relative position difference according to vaporized chemical import and biogas outlet in fixed-bed gasification furnace is divided into updraft type fixed-bed gasification furnace, downdraft fixed-bed gasification furnace, crossdraft fixed-bed gasification furnace etc. again; And biomass fluid bed gasification furnace is divided into single current bed gasification furnace, circle fluidized-bed gasification furnace, double-fluidized-bed vapourizing furnace etc.In existing fixed bed and the fluidized-bed gasification furnace, around the gasification inner chamber, flame retardant coating and thermal insulation layer are set all, are used for keeping the hot conditions of vapourizing furnace, control relative difficult such as the temperature of reaction in the stove.
Summary of the invention
But purpose of the present invention is exactly biomass gasification method and the equipment thereof that a kind of conveniently regulating and controlling temperature is provided for the above-mentioned defective that solves prior art.
Purpose of the present invention realizes by following technical solution:
But a kind of biomass gasification method of conveniently regulating and controlling temperature, it comprises filler, sealing, and igniting, gasification, cleanup step is characterized in that in gasification step, and vapourizing furnace outlet biogas temperature is less than 200 ℃.
But a kind of biomass gasification device of conveniently regulating and controlling temperature, it includes the gasification body of heater, it is characterized in that the furnace wall inner bag of described gasification body of heater is provided with cooling layer outward, and cooling layer is provided with the import and the outlet of cooling fluid, is provided with cooling fluid in cooling layer.
Purpose of the present invention also can further realize by following technology solution:
But the biomass gasification method of aforesaid a kind of conveniently regulating and controlling temperature, wherein said coolant temperature are between 40-350 ℃.
But the biomass gasification device of aforesaid a kind of conveniently regulating and controlling temperature, wherein said cooling layer are liquid cooling interlayer or the tubulose liquid cooling wall of arranging.
The tubular section of liquid cooling wall is circle, Polygons or curved but the biomass gasification device of aforesaid a kind of conveniently regulating and controlling temperature, wherein said tubulose are arranged.
But the biomass gasification device of aforesaid a kind of conveniently regulating and controlling temperature, wherein said cooling liquid inlet and outlet be arranged in the interlayer or the liquid cooling wall in liquid all participate in circulation and do not have the position at dead angle.
But the biomass gasification device of aforesaid a kind of conveniently regulating and controlling temperature, wherein said fluid inlet and liquid outlet are a plurality of.
But the biomass gasification device of aforesaid a kind of conveniently regulating and controlling temperature, the outside of wherein said cooling layer is provided with thermal insulation layer.
Adopt novel vapourizing furnace heat transfer structure of controlling temperature among the present invention, the tubulose water wall of liquid-cooled interlayer or multiple cross-sectional shape promptly is set around the inner chamber of vapourizing furnace, temperature of reaction in the vapourizing furnace etc. is controlled, also controlled simultaneously the temperature of the biogas of vapourizing furnace outlet, the temperature of the biogas of vapourizing furnace outlet is lower than 200 ℃.Such structure not only can be used the waste heat of gasification reaction, can control the parameters such as temperature of reaction in the vapourizing furnace simultaneously effectively, can control the temperature of the biogas of vapourizing furnace outlet simultaneously, and can effectively improve the quality of biogas.
Purpose of the present invention, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is the structural representation of updraft type fixed-bed gasification furnace for the present invention.
Fig. 3 is the structural representation of downdraft fixed-bed gasification furnace for the present invention.
Fig. 4 is the structural representation of crossdraft fixed-bed gasification furnace for the present invention.
Fig. 5 is the structural representation of single current bed gasification furnace for the present invention.
Embodiment
Shown in Fig. 1-5, but the biomass gasification method of a kind of conveniently regulating and controlling temperature of the present invention, it comprises filler, sealing, igniting, gasification, cleanup step, and in gasification step, vapourizing furnace exports 1 biogas, 2 temperature less than 200 ℃.Its device includes gasification body of heater 7, and the furnace wall inner bag of gasification body of heater 7 is provided with cooling layer 5 outward, and cooling layer 5 is provided with the import 8 and outlet 9 of cooling fluid, is provided with cooling fluid 3 in cooling layer 5, and described cooling fluid 3 temperature are between 40-350 ℃.Cooling layer 5 can be liquid cooling interlayer or the tubulose liquid cooling wall of arranging.Cooling fluid 3 can recycle, and the cooling fluid that goes out body of heater is delivered in the vapourizing furnace by recycle pump 14 to the certain temperature through interchanger 13 heat exchange again to be cooled off, and is provided with thermal insulation layer 12 outside cooling layer.
Embodiment one:
For the fixed-bed type vapourizing furnace, as Fig. 2-shown in Figure 4, it comprises filler, sealing, steps such as igniting, gasification, cleaning: will shred pretreated biomass 11 such as processing earlier and put into stove 7, stacking should keep evenly and keep certain tap density, can not too closely influence the ventilation property of the bed of material, can not too relax again makes the bed of material hole occur.1/4 to 1/5 space of stove inner height is left at the top behind the general filler, so that biogas exports the control of 1 temperature etc.; Behind filler, charging opening 10 grades are sealed, preventing that biomass from spilling stove and causing danger outward, also prevent the extraneous air accidents such as causing the stove implode in the stove of bleeding simultaneously.After inspection of hermetic seal is qualified, just can be by the special-purpose gas ignitor or the lighter for ignition or the well heater of other form, the temperature that makes the biomass in the stove be able to gasify, begin to feed vaporized chemical 4, vaporized chemical 4 commonly used has air, oxygen etc. promptly begin gasification reaction, produce biogas 2, in the process of carrying out gasification reaction, described cooling layer 5 liquid cooling interlayers feed liquid, as water in liquid cooling interlayer 5, heat conduction matchmaker etc., according to the flow of liquid and the control of circulating temperature, can shift out the heat of vapourizing furnace inside, the temperature of reaction in the vapourizing furnace is descended, also can import heat, heat is imported in the vapourizing furnace, to satisfy the requirement of gasification reaction.Described cooling liquid inlet 8 and outlet 9 be arranged on that liquid in the liquid cooling interlayer 5 all participate in circulation and the position of not having the dead angle.Also can a plurality of fluid inlets 8 and a plurality of liquid outlet 9 be set according to varying in size of vapourizing furnace size, and the liquid guide flow device is set at the positions such as liquid header tube of liquid cooling interlayer 5, described liquid guide flow device is for being provided with guide vane in flow channel for liquids, the construction and device that thrust-augmenting nozzle and other can the controlled liq flow distribution.More even to guarantee liquid velocity of flow and temperature in interlayer, help the control of furnace temperature.Thereby the fluid temperature of guaranteeing furnace sandwich evenly also keeps the even of the interior temperature of stove.With interlayer liquid is that water is example, and water temperature is under 40 ℃ the situation in control liquid cooling interlayer 5, can control 180 ℃ of the biogas temperature that vapourizing furnace exports.System's by-product is 40 ℃ a hot water; Water temperature is under 80 ℃ the situation in control liquid cooling interlayer 5, can control 180 ℃ of the biogas temperature that vapourizing furnace exports.System's by-product is 80 ℃ a hot water; Water temperature is higher than under 100 ℃ the situation in control liquid cooling interlayer 5, can control 200 ℃ of the biogas temperature that vapourizing furnace exports.System's by-product is hot water and steam 6; By collection, improved the thermo-efficiency of whole gasification system to the reaction heat of vapourizing furnace.The biogas that produces is derived vapourizing furnace by the biogas outlet at top and is entered next procedure.Deng material in the stove all gasification finish, gasification reaction stops, and stops to feed vaporized chemical and opens vapourizing furnace charging opening etc., to clearing up in the stove, and prepares the filling material of next stove.
Embodiment two:
For the fluidized bed type vapourizing furnace, as shown in Figure 5, biological material through chopping processing is sent in the stove by screw feeder at fluidized-bed bottom charging opening, the vaporized chemical (being generally air) that blasts from the fluidized-bed bottom, upwards blow biological material in small, broken bits and in stove, form the boiling shape, after in stove, lighting a fire, material flows at the bed inner edge and seethes, the limit combustion gasification, the biogas that produces is sent outside the stove by pipeline behind certain separation dust suppression, outside separating the ash draff that produces etc. also continuously dispatch being come out of the stove by certain e Foerderanlage.Fluidized-bed is the successive production process, bottom charging constantly and air blast, and the top biogas is just sent from outlet continuously.In gasification step, described cooling layer 5 is the tubulose liquid cooling wall of arranging, and described tubulose is arranged the tubular section of liquid cooling wall for circular, Polygons or curved.Described cooling liquid inlet 8 and outlet 9 be arranged on that liquid in the water wall all participates in circulation and the position of not having the dead angle.Also can a plurality of fluid inlets and a plurality of liquid outlet be set according to varying in size of vapourizing furnace size, and the liquid guide flow device is set at the positions such as liquid header tube of tubulose liquid cooling wall, described liquid guide flow device is for being provided with guide vane in flow channel for liquids, the construction and device that thrust-augmenting nozzle and other can the controlled liq flow distribution.More even to guarantee liquid velocity of flow and temperature in the liquid cooling wall, help the control of furnace temperature.Thereby the fluid temperature of guaranteeing body of heater tubulose liquid cooling wall evenly also keeps the even of the interior temperature of stove.In tubulose liquid cooling wall, feed liquid, as water, heat conduction matchmaker etc., according to the flow of liquid and the control of circulating temperature, can shift out the heat of vapourizing furnace inside, the temperature of reaction in the vapourizing furnace is descended, also can import heat, heat is imported in the vapourizing furnace, to satisfy the requirement of gasification reaction.With tubulose liquid cooling wall liquid is that the heat conduction matchmaker is an example, and heat conduction matchmaker temperature is under 150 ℃ the situation in control tubulose liquid cooling wall, can control 180 ℃ of the biogas temperature of vapourizing furnace outlet.Heat conduction matchmaker temperature is under 250 ℃ the situation in control tubulose liquid cooling wall, can control 170 ℃ of the biogas temperature of vapourizing furnace outlet.Water temperature is under 350 ℃ the situation in control tubulose liquid cooling wall, can control 200 ℃ of the biogas temperature of vapourizing furnace outlet.By collection, improved the thermo-efficiency of whole gasification system to the reaction heat of vapourizing furnace.By being regulated, realizes the processing parameter of heat conduction matchmaker in the tubulose liquid cooling wall the isoparametric control of gasification temperature in the steam stove, control the parameters such as temperature out of vapourizing furnace biogas simultaneously, when temperature is too high in the vapourizing furnace, can replenish the cooling that cold liquid enters circulating liquid or strengthens circulating liquid, the fluid temperature that participates in the liquid cooling wall is reduced, increase the velocity of flow of circulating liquid simultaneously, cold like this liquid just can be taken away more heat from vapourizing furnace, furnace temperature is reduced, also reduced simultaneously the temperature of the furnace wall of cooling biomass parts, strengthened cooling, the temperature out of biogas is descended the biogas that has generated; Otherwise, in order to improve the temperature in the vapourizing furnace, can improve the temperature of liquid cooling wall inner fluid, the velocity of flow that slows down so just reduces and takes heat away from vapourizing furnace, and the temperature of vapourizing furnace is raise, and the temperature of biogas outlet simultaneously also can improve.For the interlayer liquid cooling structure of fluidized-bed gasification furnace, only provided the example of single fluidized-bed in this explanation accompanying drawing 5,, can adopt interlayer liquid cooling structure of the present invention too, the operating parameter of fluidized-bed has been regulated and control for the fluidized-bed gasification furnace of other form.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (8)
- But 1. the biomass gasification method of a conveniently regulating and controlling temperature, it comprises filler, sealing, and igniting, gasification, cleanup step is characterized in that in gasification step, and vapourizing furnace outlet biogas temperature is less than 200 ℃.
- 2. but the biomass gasification method of a kind of conveniently regulating and controlling temperature according to claim 1 is characterized in that described coolant temperature is between 40-350 ℃.
- But 3. the biomass gasification device of a conveniently regulating and controlling temperature, it includes the gasification body of heater, it is characterized in that the furnace wall inner bag of described gasification body of heater is provided with cooling layer outward, and cooling layer is provided with the import and the outlet of cooling fluid, is provided with cooling fluid in cooling layer.
- 4. but the biomass gasification device of a kind of conveniently regulating and controlling temperature according to claim 3 is characterized in that described cooling layer is liquid cooling interlayer or the tubulose liquid cooling wall of arranging.
- 5. but the biomass gasification device of a kind of conveniently regulating and controlling temperature according to claim 4 is characterized in that described tubulose arranges the tubular section of liquid cooling wall for circular, Polygons or curved.
- But 6. the biomass gasification device of a kind of conveniently regulating and controlling temperature according to claim 3, it is characterized in that described cooling liquid inlet and outlet be arranged in the interlayer or the liquid in the liquid cooling wall all participates in circulation and does not have the position at dead angle.
- 7. but the biomass gasification device of a kind of conveniently regulating and controlling temperature according to claim 6 is characterized in that described fluid inlet and liquid outlet are a plurality of.
- 8. but the biomass gasification device of a kind of conveniently regulating and controlling temperature according to claim 3 is characterized in that being provided with thermal insulation layer in the outside of cooling layer.
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| CNA2006100963917A CN101148593A (en) | 2006-09-22 | 2006-09-22 | Biomass gasification method capable of conveniently regulating and controlling temperature and device thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449772A (en) * | 2014-10-23 | 2015-03-25 | 刘长福 | High-efficiency production system of wood creosote |
| CN105674277A (en) * | 2016-03-21 | 2016-06-15 | 安徽未名生物环保有限公司 | Waste combustion equipment capable of achieving efficient gas circulation |
| CN107513434A (en) * | 2017-09-26 | 2017-12-26 | 安徽鼎梁生物能源科技开发有限公司 | A kind of biomass gasifying furnace gasification process equipment and processing method |
-
2006
- 2006-09-22 CN CNA2006100963917A patent/CN101148593A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449772A (en) * | 2014-10-23 | 2015-03-25 | 刘长福 | High-efficiency production system of wood creosote |
| CN105674277A (en) * | 2016-03-21 | 2016-06-15 | 安徽未名生物环保有限公司 | Waste combustion equipment capable of achieving efficient gas circulation |
| CN107513434A (en) * | 2017-09-26 | 2017-12-26 | 安徽鼎梁生物能源科技开发有限公司 | A kind of biomass gasifying furnace gasification process equipment and processing method |
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Open date: 20080326 |