CN105316014A - Method and system for pyrolyzing biomass - Google Patents
Method and system for pyrolyzing biomass Download PDFInfo
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- CN105316014A CN105316014A CN201510784548.4A CN201510784548A CN105316014A CN 105316014 A CN105316014 A CN 105316014A CN 201510784548 A CN201510784548 A CN 201510784548A CN 105316014 A CN105316014 A CN 105316014A
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- 239000002028 Biomass Substances 0.000 title claims abstract description 180
- 238000000034 method Methods 0.000 title claims abstract description 133
- 238000000197 pyrolysis Methods 0.000 claims abstract description 258
- 239000000203 mixture Substances 0.000 claims abstract description 147
- 239000003054 catalyst Substances 0.000 claims abstract description 138
- 239000007789 gas Substances 0.000 claims abstract description 91
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000003546 flue gas Substances 0.000 claims abstract description 69
- 238000010438 heat treatment Methods 0.000 claims abstract description 57
- 239000000047 product Substances 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 46
- 239000012265 solid product Substances 0.000 claims abstract description 38
- 239000007787 solid Substances 0.000 claims abstract description 35
- 230000005855 radiation Effects 0.000 claims abstract description 33
- 239000003610 charcoal Substances 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000003921 oil Substances 0.000 claims description 95
- 230000008569 process Effects 0.000 claims description 79
- 239000000779 smoke Substances 0.000 claims description 76
- 238000011282 treatment Methods 0.000 claims description 35
- 238000001035 drying Methods 0.000 claims description 33
- 239000012075 bio-oil Substances 0.000 claims description 28
- 238000012545 processing Methods 0.000 claims description 28
- 239000000428 dust Substances 0.000 claims description 21
- 230000008929 regeneration Effects 0.000 claims description 19
- 238000011069 regeneration method Methods 0.000 claims description 19
- 238000011284 combination treatment Methods 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 6
- 238000007233 catalytic pyrolysis Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 10
- 239000000969 carrier Substances 0.000 description 9
- 239000002918 waste heat Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000003517 fume Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 159000000000 sodium salts Chemical class 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 4
- 235000011613 Pinus brutia Nutrition 0.000 description 4
- 241000018646 Pinus brutia Species 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 210000000952 spleen Anatomy 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
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- 108010066057 cabin-1 Proteins 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a method and a system for pyrolyzing biomass. The method comprises the following steps: (1) mixing the biomass with a catalyst to obtain a mixture; (2) pyrolyzing the mixture in a mobile bed pyrolysis reactor for pyrolysis to obtain an oil-gas mixture and a solid pyrolysis product containing charcoal and an inactived catalyst; (3) cooling the oil-gas mixture; (4) combusting the solid pyrolysis product containing charcoal and the inactived catalyst, so as to obtain heating flue gas and a solid product containing both hot ash and a regenerated catalyst; (5) returning the heating flue gas into a radiation heating pipe of the mobile bed pyrolysis reactor related in the step (2); (6) separating hot ash and the regenerated catalyst which are contained by the solid product, and returning the regenerated catalyst into the step (1). The method can be used for realizing catalytic pyrolysis of the biomass with high pyrolysis efficiency and uniform heating efficiency; moreover, the problem that the catalyst consumption in the catalytic pyrolysis of the biomass is high in the prior art can be solved.
Description
Technical field
The invention belongs to chemical field, specifically, the present invention relates to a kind of method and system of pyrolysis biomass.
Background technology
Along with growing to energy demand of people, the fuel as main energy sources but reduces rapidly.Therefore, the focus that a kind of reproducible environmentally friendly energy just becomes social common concern is found.In various renewable energy source, biomass are unique, sun power can not only be stored, or a kind of reproducible carbon source, conventional solid-state, liquid and gaseous fuel can be changed into, not only can reduce the usage quantity to fossil oil to effective utilization of biomass energy, the quantity discharged of carbonic acid gas can be suppressed again.Biomass energy effectively utilizes technology to start from phase late 1970s, mainly utilizes that Wood Adhesives from Biomass is gas by thermochemical study and conversion technology, liquid and solid-state various energy resources product and chemical.Thermochemical method comprises: directly burning, gasification and pyrolysis.Wherein the most frequently usedly surely belong to biomass pyrolytic technology.
Biomass pyrolytic refers to that biomass are not having thermolysis under oxygen or anoxia condition completely, finally generates the process of charcoal, bio oil and non-condensable gases, and the ratio of three kinds of products depends on type and the reaction conditions of pyrolytic process.Reactor is the important device that biomass carry out pyrolysis, and is the focus paid close attention to both at home and abroad at present.Conventional pyrolysis reactor has that heating rate is fast, temperature of reaction is medium and the feature such as gas residence time is short.At present, countries in the world, by the control to the design of reactor, manufacture and processing condition, have developed fixed bed, fluidized-bed, vacuum moving-bed, drainage bed, entrained flow, many furnace apparatus, rotary oven, rotating cone reactor and radiant-type furnace etc.
In prior art, all types of reactors respectively has relative merits, and the structure of fixed bed, moving-bed is simple, stable operation, but heat and mass effect is poor, and treatment scale is difficult to amplify; Vacuum moving-bed, rotating cone reactor and radiant-type furnace have carried out part to fixed-bed reactor to be improved, but still there is the problems such as treatment scale is little, system complex; Fluidized-bed reactor is considered to promising reaction unit, and heat and mass effect is better, but its elutriation characteristic causes being difficult to purification containing a large amount of dust granules in pyrolysis gas of biomass.
Therefore, existing biomass pyrolytic technology is further improved.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the method and system proposing a kind of pyrolysis biomass, the method can realize the catalyse pyrolysis of biomass, and pyrolysis efficiency is high, homogeneous heating, the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large can be solved simultaneously, and the heat energy that process produces can be made full use of, thus significantly reduce processing cost.
In one aspect of the invention, the present invention proposes a kind of method of pyrolysis biomass.According to embodiments of the invention, the method comprises:
(1) biomass and catalyzer are carried out combination treatment, to obtain mixture;
(2) described mixture is carried out pyrolysis processing in moving bed pyrolysis reactor, to obtain gas-oil mixture and to contain the using pyrolysis product of charcoal and decaying catalyst;
(3) described gas-oil mixture is carried out cooling process, to obtain bio-oil and pyrolysis gas;
(4) the described using pyrolysis product containing charcoal and decaying catalyst is burnt with air, to obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst;
(5) radiation heating tube of the described moving bed pyrolysis reactor in step (2) is returned as thermal source using described for heat smoke, to obtain flue gas of lowering the temperature; And
(6) carry out separating treatment by described containing heat ash and the solid product of regenerated catalyst, to obtain regenerated catalyst respectively and heat is grey, and described regenerated catalyst is returned step (1) and mix with described mixture.
Thus, the catalyse pyrolysis of biomass can be realized according to the method for the pyrolysis biomass of the embodiment of the present invention, and pyrolysis efficiency is high, homogeneous heating, the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large can be solved simultaneously, and the heat energy that process produces can be made full use of, thus significantly reduce processing cost.
In addition, the method for pyrolysis biomass according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, the method for described pyrolysis biomass comprises further: (7) carried out drying treatment to described biomass in advance before described biomass and described catalyzer are carried out combination treatment.Thus, biomass pyrolytic efficiency can be significantly improved.
In some embodiments of the invention, the method of described pyrolysis biomass comprises further: (8) are before carrying out cooling process by described gas-oil mixture, in advance dust removal process is carried out to described gas-oil mixture, so that oil gas and solid particulate after obtaining dedusting, and described solid particulate is returned step (4) and described air and burn.Thus, not only can improve the quality of bio-oil and pyrolysis gas, and the utilization ratio of raw material can be improved.
In some embodiments of the invention, the method of described pyrolysis biomass comprises further: (9) using the described radiation heating tube returning the described moving bed pyrolysis reactor in step (2) for heat smoke as before thermal source, dust removal process is carried out for heat smoke in advance, so that for heat smoke and thin ash after obtaining dedusting to described.Thus, the efficiency utilization of heat supply fume afterheat can be realized.
In some embodiments of the invention, the method of described pyrolysis biomass comprises further: the described cooling flue gas one of at least obtained with step (5) in described heat ash and described thin ash is carried out heat exchange process by (10), to obtain intensification flue gas and lime-ash, and described intensification flue gas is returned step (7) drying treatment is carried out to described biomass.Thus, can the efficiency utilization of heat in implementation procedure further.
In another aspect of the present invention, the present invention proposes a kind of system of pyrolysis biomass.According to embodiments of the invention, described system is for implementing the method for pyrolysis biomass described above, and this system comprises:
Mixing device, described mixing device has the outlet of biomass inlet, catalyst inlet and mixture, and is suitable for biomass and catalyzer to carry out combination treatment, to obtain mixture;
Moving bed pyrolysis reactor, described moving bed pyrolysis reactor has mixture entrance, heat supply smoke inlet, cooling exhanst gas outlet, gas-oil mixture outlet and using pyrolysis product exit, described mixture entrance exports with described mixture and is connected, and be suitable for described mixture to carry out pyrolysis processing, to obtain gas-oil mixture and to contain the using pyrolysis product of charcoal and decaying catalyst;
Refrigerating unit, described refrigerating unit has gas-oil mixture entrance, bio-oil outlet and pyrolysis gas outlet, described gas-oil mixture entrance exports with described gas-oil mixture and is connected, and is suitable for described gas-oil mixture to carry out cooling process, to obtain bio-oil and pyrolysis gas;
Catalyst regeneration device, described catalyst regeneration device has gas inlet, using pyrolysis product inlet, heat supply exhanst gas outlet and solid product outlet, described using pyrolysis product inlet is connected with described using pyrolysis product exit, described heat supply exhanst gas outlet is connected with described heat supply smoke inlet, and be suitable for described using pyrolysis product containing charcoal and decaying catalyst and air to burn, to obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst, and return the radiation heating tube of described moving bed pyrolysis reactor as thermal source using described for heat smoke, to obtain flue gas of lowering the temperature, and
Tripping device, described tripping device has the outlet of solid product entrance, regenerated catalyst outlet and heat ash, described solid product entrance exports with described solid product and is connected, described regenerated catalyst outlet is connected with described catalyst inlet, and be suitable for the described solid product containing heat ash and regenerated catalyst to carry out separating treatment, to obtain regenerated catalyst and heat ash respectively, and described regenerated catalyst returned described mixing device.
Thus, the catalyse pyrolysis of biomass can be realized according to the system of the pyrolysis biomass of the embodiment of the present invention, and pyrolysis efficiency is high, homogeneous heating, the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large can be solved simultaneously, and the heat energy produced in system can be made full use of, thus significantly reduce processing cost.
In addition, the system of pyrolysis biomass according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, the system of described pyrolysis biomass comprises further: drying installation, described drying installation is connected with described biomass inlet, and is suitable for carrying out drying treatment to described biomass in advance before described biomass and described catalyzer are carried out combination treatment.Thus, biomass pyrolytic efficiency can be significantly improved.
In some embodiments of the invention, the system of described pyrolysis biomass comprises further: the first cleaning apparatus, described first cleaning apparatus has gas-oil mixture import, oil gas vent and solid particulate outlet after dedusting, described gas-oil mixture import exports with described gas-oil mixture and is connected, after described dedusting, oil gas vent is connected with described gas-oil mixture entrance, described solid particulate outlet is connected with described using pyrolysis product inlet, and be suitable for before described gas-oil mixture is carried out cooling process, in advance dust removal process is carried out to described gas-oil mixture, so that oil gas and solid particulate after obtaining dedusting, and described solid particulate is returned described catalyst regeneration device.Thus, not only can improve the quality of bio-oil and pyrolysis gas, and the utilization ratio of raw material can be improved.
In some embodiments of the invention, the system of described pyrolysis biomass comprises further: the second cleaning apparatus, described second cleaning apparatus has dust-laden heat supply smoke inlet, heat supply exhanst gas outlet and thin ash outlet after dedusting, described dust-laden heat supply smoke inlet is connected with described heat supply exhanst gas outlet, after described dedusting, heat supply exhanst gas outlet is connected with described heat supply smoke inlet, and be suitable for using the described radiation heating tube returning described moving bed pyrolysis reactor for heat smoke as before thermal source, dust removal process is carried out for heat smoke in advance to described, so that for heat smoke and thin ash after obtaining dedusting.Thus, the efficiency utilization of heat supply fume afterheat can be realized.
In some embodiments of the invention, the system of described pyrolysis biomass comprises further: heat-exchanger rig, described heat-exchanger rig has hot grey entrance, cooling smoke inlet, intensification exhanst gas outlet and lime-ash outlet, one of being at least connected during the grey entrance of described heat and described heat ash export and export with described thin ash, described cooling smoke inlet is connected with described cooling exhanst gas outlet, described intensification exhanst gas outlet is connected with described drying installation, and be suitable for one of at least to carry out heat exchange process with described cooling flue gas in described heat ash and described thin ash, to obtain intensification flue gas and lime-ash, and described intensification flue gas is returned described drying installation.Thus, can the efficiency utilization of heat in implementation procedure further.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the method flow schematic diagram of pyrolysis biomass according to an embodiment of the invention;
Fig. 2 is the method flow schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Fig. 3 is the method flow schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Fig. 4 is the method flow schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Fig. 5 is the method flow schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Fig. 6 is the method flow schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Fig. 7 is the system architecture schematic diagram of pyrolysis biomass according to an embodiment of the invention;
Fig. 8 is the system architecture schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Fig. 9 is the system architecture schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Figure 10 is the system architecture schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Figure 11 is the system architecture schematic diagram of the pyrolysis biomass according to another embodiment of the present invention;
Figure 12 is the system architecture schematic diagram of the pyrolysis biomass according to another embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In one aspect of the invention, the present invention proposes a kind of method of pyrolysis biomass.According to embodiments of the invention, the method comprises: biomass and catalyzer are carried out combination treatment, to obtain mixture by (1); (2) described mixture is carried out pyrolysis processing in moving bed pyrolysis reactor, to obtain gas-oil mixture and to contain the using pyrolysis product of charcoal and decaying catalyst; (3) described gas-oil mixture is carried out cooling process, to obtain bio-oil and pyrolysis gas; (4) the described using pyrolysis product containing charcoal and decaying catalyst is burnt with air, to obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst; (5) radiation heating tube of the described moving bed pyrolysis reactor in step (2) is returned as thermal source using described for heat smoke, to obtain flue gas of lowering the temperature; And (6) carry out separating treatment by described containing heat ash and the solid product of regenerated catalyst, to obtain regenerated catalyst respectively and heat is grey, and described regenerated catalyst is returned step (1) and mix with described mixture.Contriver finds, by adopting moving bed pyrolysis reactor, pyrolysis processing is carried out to biomass, because moving bed pyrolysis reactor adopts radiator tube heating, mixture in pyrolytic process is heated evenly, thus the catalyse pyrolysis efficiency of biomass can be significantly improved, moving bed pyrolysis reactor adopts radiator tube heating simultaneously, the flue gas that produces in radiator tube and gas-oil mixture are isolated, thus the quality of bio-oil and pyrolysis gas can be significantly improved, secondly the mode of burning is adopted to carry out manipulation of regeneration to decaying catalyst, and obtained regenerated catalyst heat is delivered to mix with mixture, not only can solve the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large, and biomass can be transferred heat to as solid thermal carriers, thus improve the catalyse pyrolysis efficiency of biomass further, additionally by returning the radiation heating tube of moving bed pyrolysis reactor as thermal source using what produce in combustion processes for heat smoke, can the efficiency utilization of waste heat in implementation procedure, thus significantly reduce processing cost.
Method below with reference to the pyrolysis biomass of Fig. 1-5 pairs of embodiment of the present invention is described in detail.According to embodiments of the invention, the method comprises:
S100: biomass and catalyzer are carried out combination treatment
According to embodiments of the invention, biomass and catalyzer are carried out combination treatment, thus can mixture be obtained.
According to one embodiment of present invention, the particular type of biomass and catalyzer is also not particularly limited, those skilled in the art can select according to actual needs, according to a particular embodiment of the invention, biomass can for being selected from least one in stalk, sawdust, rice husk and pine sawdust, and catalyzer can be metal-salt, particular certain cancers and sylvite, more preferably sodium salt can be such as salt of wormwood, sodium carbonate.Contriver finds, adopts sodium salt as the catalyzer of biomass pyrolysis process, and along with the increase of sodium salt concentration, the pyrolytic reaction of biomass is more violent, thus can significantly improve the catalyse pyrolysis efficiency of biomass.
S200: mixture is carried out pyrolysis processing in moving bed pyrolysis reactor
According to embodiments of the invention, mixture is carried out pyrolysis processing in moving bed pyrolysis reactor, thus gas-oil mixture can be obtained and contain the using pyrolysis product of charcoal and decaying catalyst.Concrete, moving bed pyrolysis reactor is provided with multiple radiation heating tube, this radiation heating tube provides radiant heat source by combustion fuel or supply high-temperature flue gas for moving bed pyrolysis reactor, mixture containing biomass and catalyzer carries out pyrolysis processing at moving bed pyrolysis inside reactor, and the gas-oil mixture of generation is discharged through reactor head pipeline.Thus, by adopting moving bed pyrolysis reactor, pyrolysis processing is carried out to biomass, because moving bed pyrolysis reactor adopts radiator tube heating, mixture in pyrolytic process is heated evenly, thus the catalyse pyrolysis efficiency of biomass can be significantly improved, simultaneously moving bed pyrolysis reactor adopts radiator tube heating, the flue gas that produces and gas-oil mixture is isolated, thus can significantly improve the quality of bio-oil and pyrolysis gas in radiator tube.
S300: gas-oil mixture is carried out cooling process
According to embodiments of the invention, gas-oil mixture obtained above is carried out cooling process, thus bio-oil and pyrolysis gas can be obtained.Thus, being separated of bio-oil in gas-oil mixture and pyrolysis gas can be realized.According to a particular embodiment of the invention, purifying treatment can be carried out to the pyrolysis gas of resulting separation, thus can pyrolysis gas be purified.It should be noted that, those skilled in the art can select the condition of cooling process and purifying treatment according to actual needs.
S400: the using pyrolysis product containing charcoal and decaying catalyst and air are burnt
According to embodiments of the invention, the using pyrolysis product containing charcoal and decaying catalyst obtained above is burnt with air, thus can obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst.Thus, by the using pyrolysis product containing charcoal and decaying catalyst and air are burnt, can regenerate decaying catalyst, and charcoal burning wherein becomes heat ash, and along with generation for heat smoke, thus the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large can be solved.In this step, concrete, air can be blasted by blower fan and burn with the using pyrolysis product containing charcoal and decaying catalyst.
S500: using the radiation heating tube of moving bed pyrolysis reactor that returns for heat smoke in S200 as thermal source
According to embodiments of the invention, return the radiation heating tube of the moving bed pyrolysis reactor in step S200 as thermal source using what produce in above-mentioned combustion processes for heat smoke, thus obtain flue gas of lowering the temperature.Thus, the efficiency utilization of heat supply fume afterheat can be realized, thus significantly can reduce system energy consumption.
S600: carry out separating treatment by containing heat ash and the solid product of regenerated catalyst, and regenerated catalyst is returned step S100 mix with mixture
According to embodiments of the invention, above the obtained solid product containing heat ash and regenerated catalyst is carried out separating treatment, thus regenerated catalyst can be obtained respectively and heat is grey, and the regenerated catalyst obtained is returned step S100 mix with mixture.Thus, mix with mixture by obtained regenerated catalyst heat is delivered to, not only can solve the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large, and biomass can be transferred heat to as solid thermal carriers, thus improve the catalyse pyrolysis efficiency of biomass further.
Method according to the pyrolysis biomass of the embodiment of the present invention carries out pyrolysis processing by adopting moving bed pyrolysis reactor to biomass, because moving bed pyrolysis reactor adopts radiator tube heating, mixture in pyrolytic process is heated evenly, thus the catalyse pyrolysis efficiency of biomass can be significantly improved, moving bed pyrolysis reactor adopts radiator tube heating simultaneously, the flue gas that produces in radiator tube and gas-oil mixture are isolated, thus the quality of bio-oil and pyrolysis gas can be significantly improved, secondly the mode of burning is adopted to carry out manipulation of regeneration to decaying catalyst, and obtained regenerated catalyst heat is delivered to mix with mixture, not only can solve the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large, and biomass can be transferred heat to as solid thermal carriers, thus improve the catalyse pyrolysis efficiency of biomass further, additionally by returning the radiation heating tube of moving bed pyrolysis reactor as thermal source using what produce in combustion processes for heat smoke, can the efficiency utilization of waste heat in implementation procedure, thus significantly reduce processing cost.
With reference to figure 2, the method according to the pyrolysis biomass of the embodiment of the present invention comprises further:
S700: in advance drying treatment was carried out to biomass before biomass and catalyzer are carried out combination treatment
According to embodiments of the invention, before biomass and catalyzer are carried out combination treatment, drying treatment can be carried out to biomass in advance.Thus, effectively can reduce the moisture in biomass, thus improve the catalyse pyrolysis efficiency of biomass further.It should be noted that, those skilled in the art can select the actual conditions of drying treatment according to actual needs.
With reference to figure 3, the method according to the pyrolysis biomass of the embodiment of the present invention comprises further:
S800: before gas-oil mixture is carried out cooling process, in advance dust removal process is carried out to gas-oil mixture, and solid particulate is returned S400 and air burns
According to embodiments of the invention, before gas-oil mixture is carried out cooling process, dust removal process can be carried out to gas-oil mixture in advance, thus oil gas and solid particulate after dedusting can be obtained, and solid particulate be returned step S400 and air burns.Thus, dust removal process was carried out in advance before gas-oil separation is carried out to gas-oil mixture, the charcoal that can carry in efficient recovery gas-oil mixture and deactivated catalyst particles, thus not only can the quality of bio-oil and pyrolysis gas, and can the utilization ratio of remarkable raw material.
With reference to figure 4, the method according to the pyrolysis biomass of the embodiment of the present invention comprises further:
S900: at the radiation heating tube of the moving bed pyrolysis reactor that will return for heat smoke in step S200 as before thermal source, carry out dust removal process to for heat smoke in advance
According to embodiments of the invention, at the radiation heating tube returning the moving bed pyrolysis reactor in step S200 for heat smoke will produced in combustion processes as before thermal source, dust removal process can be carried out in advance to for heat smoke, thus for heat smoke and thin ash after dedusting can be obtained.Thus, the efficiency utilization for material waste heat in heat smoke in subsequent process can be realized.
With reference to figure 5, the method according to the pyrolysis biomass of the embodiment of the present invention comprises further:
S1000: the cooling flue gas one of at least obtained with S500 in hot ash and thin ash is carried out heat exchange process, and intensification flue gas is returned step S700 drying treatment is carried out to biomass
According to embodiments of the invention, the cooling flue gas one of at least obtained with step S500 in hot ash and thin ash is carried out heat exchange process, thus intensification flue gas and lime-ash can be obtained, and obtained intensification flue gas is returned step S700 drying treatment is carried out to biomass.Concrete, by by intensification flue gas and biomass transmission of heat by contact, not only can carry out drying treatment to biomass, and the temperature of flue gas can be reduced, thus eliminate cooling process is carried out to flue gas, and the flue gas after obtained cooling is directly discharged by chimney.Thus, the efficiency utilization of internal system waste heat can be realized, and then reduce energy consumption cost further.
Conveniently understand, below with reference to Fig. 6, the concrete operations of the method for the pyrolysis biomass of the embodiment of the present invention are described in detail.
First drying treatment is carried out to biomass, moisture in removing biomass, then dried biomass are mixed with catalyzer, obtain mixture, then this mixture is supplied in moving bed pyrolysis reactor and carries out pyrolysis processing, obtain gas-oil mixture and contain the using pyrolysis product of charcoal and decaying catalyst, then the using pyrolysis product containing charcoal and decaying catalyst obtained and air are burnt, obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst, then dust removal process will be carried out for heat smoke, heat smoke and thin ash is supplied after obtaining dedusting, and return the radiation heating tube of moving bed pyrolysis reactor as thermal source using after dedusting for heat smoke, obtain low-temperature flue gas, the gas-oil mixture simultaneously produced carries out dust removal process, obtain oil gas and solid particulate after dedusting, and be supplied to combustion processes and air burns by being separated the solid particulate that obtains, then cooling process is carried out to oil gas after dedusting, obtain bio-oil and thick pyrolysis gas, then purifying treatment is carried out to this thick pyrolysis gas, obtain net heat to vent one's spleen, then one of at least heat exchange process will be carried out with low-temperature flue gas in the thin ash obtained and heat ash, obtain intensification flue gas and lime-ash, and this intensification flue gas is returned as the thermal source use in drying process, dried flue gas can be discharged through chimney.
As mentioned above, can have according to the method for the pyrolysis biomass of the embodiment of the present invention and be selected from following advantage one of at least:
High-temperature flue gas radiation heating and high temperature catalyst is utilized to carry out pyrolysis processing to biomass in moving bed pyrolysis reactor according to the method for the pyrolysis biomass of the embodiment of the present invention, obtain bio-oil and high heating value pyrolysis gas, achieve catalyzer in intrasystem regeneration, recovery and catalyse pyrolysis self-circulation, while realizing biomass pyrolytic, reduce catalyst consumption, cost-saving, reduce biomass pyrolysis process dust entrainment;
Decaying catalyst and pyrolytic carbon and air combustion is made according to the method for the pyrolysis biomass of the embodiment of the present invention, while making decaying catalyst regenerate, high-temperature flue gas and high-temperature regenerated catalyst can be obtained, high-temperature flue gas by radiation heating techniques as radiant heat source, and high-temperature regenerated catalyst not only transfers heat to biomass as solid thermal carriers as catalyzer by returning moving bed pyrolysis reactor after mixing with biomass simultaneously, therefore raising system thermal efficiency can be increased substantially, reduce catalyst levels, improve device process;
According to the high-temperature flue gas that a part of thermal source in the method for the pyrolysis biomass of the embodiment of the present invention is catalyst regeneration process burning generation, by radiation heating tube, moving-burden bed reactor is heated, funnel temperature is lower, the high-temperature regenerated catalyst that another part heat produces from catalyst regeneration process, heat is provided as solid thermal carriers by mixing with dried biomass, and carry out adjustment System heat supply by the temperature and consumption adjusting high-temperature flue gas and regenerated catalyst, overall thermal efficiency is higher;
Method according to the pyrolysis biomass of the embodiment of the present invention adopts radiator tube heating technique, while carrying out utilizing high-temperature flue gas heat heating, realize the isolation of pyrolysis oil gas in flue gas and reactor, avoid the potential safety hazard adopting conventional high-temperature flue gas heating to bring, the burden that flue gas causes condensation, dedusting and flue gas on the impact of pyrolysis gas characteristic, and make process operation and control be simplified;
Flue gas after heat exchange cooling in radiant tube heater is entered gas-solid heat exchange device by fume extractor by the method according to the pyrolysis biomass of the embodiment of the present invention, low-temperature flue gas can be utilized to reclaim the sensible heat of the rear high-temperature hot ash of burning, pass into dryness storehouse after being heated up by flue gas and be used for dried feed, and then improve systematic heat utilization rate.
In second of the present invention, the present invention proposes a kind of system of pyrolysis biomass.According to embodiments of the invention, this system is for implementing the method for pyrolysis biomass described above.According to embodiments of the invention, this system comprises: mixing device, and described mixing device has the outlet of biomass inlet, catalyst inlet and mixture, and is suitable for biomass and catalyzer to carry out combination treatment, to obtain mixture, moving bed pyrolysis reactor, described moving bed pyrolysis reactor has mixture entrance, heat supply smoke inlet, cooling exhanst gas outlet, gas-oil mixture outlet and using pyrolysis product exit, described mixture entrance exports with described mixture and is connected, and be suitable for described mixture to carry out pyrolysis processing, to obtain gas-oil mixture and to contain the using pyrolysis product of charcoal and decaying catalyst, refrigerating unit, described refrigerating unit has gas-oil mixture entrance, bio-oil outlet and pyrolysis gas outlet, described gas-oil mixture entrance exports with described gas-oil mixture and is connected, and is suitable for described gas-oil mixture to carry out cooling process, to obtain bio-oil and pyrolysis gas, catalyst regeneration device, described catalyst regeneration device has gas inlet, using pyrolysis product inlet, heat supply exhanst gas outlet and solid product outlet, described using pyrolysis product inlet is connected with described using pyrolysis product exit, described heat supply exhanst gas outlet is connected with described heat supply smoke inlet, and be suitable for described using pyrolysis product containing charcoal and decaying catalyst and air to burn, to obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst, and return the radiation heating tube of described moving bed pyrolysis reactor as thermal source using described for heat smoke, to obtain flue gas of lowering the temperature, and tripping device, described tripping device has the outlet of solid product entrance, regenerated catalyst outlet and heat ash, described solid product entrance exports with described solid product and is connected, described regenerated catalyst outlet is connected with described catalyst inlet, and be suitable for the described solid product containing heat ash and regenerated catalyst to carry out separating treatment, to obtain regenerated catalyst and heat ash respectively, and described regenerated catalyst returned described mixing device.Contriver finds, by adopting moving bed pyrolysis reactor, pyrolysis processing is carried out to biomass, because moving bed pyrolysis reactor adopts radiator tube heating, mixture in pyrolytic process is heated evenly, thus the catalyse pyrolysis efficiency of biomass can be significantly improved, moving bed pyrolysis reactor adopts radiator tube heating simultaneously, the flue gas that produces in radiator tube and gas-oil mixture are isolated, thus the quality of bio-oil and pyrolysis gas can be significantly improved, secondly the mode of burning is adopted to carry out manipulation of regeneration to decaying catalyst, and obtained regenerated catalyst heat is delivered to mix with mixture, not only can solve the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large, and biomass can be transferred heat to as solid thermal carriers, thus improve the catalyse pyrolysis efficiency of biomass further, additionally by returning the radiation heating tube of moving bed pyrolysis reactor as thermal source using what produce in combustion processes for heat smoke, the efficiency utilization of waste heat in system can be realized, thus significantly reduce processing cost.
System below with reference to the pyrolysis biomass of Fig. 7-11 pairs of embodiment of the present invention is described in detail.According to embodiments of the invention, this system comprises:
Mixing device 100: according to embodiments of the invention, mixing device 100 has biomass inlet 101, catalyst inlet 102 and mixture outlet 103, and is suitable for biomass and catalyzer to carry out combination treatment, thus can obtain mixture.
According to one embodiment of present invention, the particular type of biomass and catalyzer is also not particularly limited, those skilled in the art can select according to actual needs, according to a particular embodiment of the invention, biomass can for being selected from least one in stalk, sawdust, rice husk and pine sawdust, and catalyzer can be metal-salt, particular certain cancers and sylvite, more preferably sodium salt can be such as salt of wormwood, sodium carbonate.Contriver finds, adopts sodium salt as the catalyzer of biomass pyrolysis process, and along with the increase of sodium salt concentration, the pyrolytic reaction of biomass is more violent, thus can significantly improve the catalyse pyrolysis efficiency of biomass.
Moving bed pyrolysis reactor 200: according to embodiments of the invention, moving bed pyrolysis reactor 200 has mixture entrance 201, heat supply smoke inlet 202, cooling exhanst gas outlet 203, gas-oil mixture outlet 204 and using pyrolysis product exit 205, mixture entrance 201 and mixture export 103 and are connected, and be suitable for mixture to carry out pyrolysis processing, thus gas-oil mixture can be obtained and contain the using pyrolysis product of charcoal and decaying catalyst.Concrete, moving bed pyrolysis reactor is provided with multiple radiation heating tube, this radiation heating tube provides radiant heat source by combustion fuel or supply high-temperature flue gas for moving bed pyrolysis reactor, mixture containing biomass and catalyzer carries out pyrolysis processing at moving bed pyrolysis inside reactor, and the gas-oil mixture of generation is discharged through reactor head pipeline.Thus, by adopting moving bed pyrolysis reactor, pyrolysis processing is carried out to biomass, because moving bed pyrolysis reactor adopts radiator tube heating, mixture in pyrolytic process is heated evenly, thus the catalyse pyrolysis efficiency of biomass can be significantly improved, simultaneously moving bed pyrolysis reactor adopts radiator tube heating, the flue gas that produces and gas-oil mixture is isolated, thus can significantly improve the quality of bio-oil and pyrolysis gas in radiator tube.
Refrigerating unit 300: according to embodiments of the invention, refrigerating unit 300 has gas-oil mixture entrance 301, bio-oil outlet 302 and pyrolysis gas outlet 303, gas-oil mixture entrance 301 and gas-oil mixture export 204 and are connected, and be suitable for gas-oil mixture obtained above to carry out cooling process, thus bio-oil and pyrolysis gas can be obtained.Thus, being separated of bio-oil in gas-oil mixture and pyrolysis gas can be realized.According to a particular embodiment of the invention, purifying treatment can be carried out to the pyrolysis gas of resulting separation, thus can pyrolysis gas be purified.It should be noted that, those skilled in the art can select the condition of cooling process and purifying treatment according to actual needs.
Catalyst regeneration device 400: according to embodiments of the invention, catalyst regeneration device 400 has gas inlet 401, using pyrolysis product inlet 402, heat supply exhanst gas outlet 403 and solid product outlet 404, using pyrolysis product inlet 402 is connected with using pyrolysis product exit 205, heat supply exhanst gas outlet 403 is connected with heat supply smoke inlet 202, and be suitable for the using pyrolysis product containing charcoal and decaying catalyst and air to burn, to obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst, and the radiation heating tube of moving bed pyrolysis reactor will be returned for heat smoke as thermal source, to obtain flue gas of lowering the temperature.Thus, by the using pyrolysis product containing charcoal and decaying catalyst and air are burnt, can regenerate decaying catalyst, and charcoal burning wherein becomes heat ash, and along with generation for heat smoke, thus the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large can be solved, and be supplied to the accumulation of heat heating tube of moving bed pyrolysis reactor as thermal source using what produce for heat smoke, the efficiency utilization of heat supply fume afterheat can be realized, thus significantly can reduce system energy consumption.Concrete, air can be blasted by blower fan and burn with the using pyrolysis product containing charcoal and decaying catalyst.
Tripping device 500: according to embodiments of the invention, tripping device 500 has solid product entrance 501, regenerated catalyst outlet 502 and heat ash outlet 503, solid product entrance 501 and solid product export 404 and are connected, regenerated catalyst outlet 502 is connected with catalyst inlet 102, and be suitable for above the obtained solid product containing heat ash and regenerated catalyst to carry out separating treatment, thus regenerated catalyst and heat ash can be obtained respectively, and return mixing device 100 mix being separated the regenerated catalyst that obtains with mixture.Thus, mix with mixture by obtained regenerated catalyst heat is delivered to, not only can solve the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large, and biomass can be transferred heat to as solid thermal carriers, thus improve the catalyse pyrolysis efficiency of biomass further.
System according to the pyrolysis biomass of the embodiment of the present invention carries out pyrolysis processing by adopting moving bed pyrolysis reactor to biomass, because moving bed pyrolysis reactor adopts radiator tube heating, mixture in pyrolytic process is heated evenly, thus the catalyse pyrolysis efficiency of biomass can be significantly improved, moving bed pyrolysis reactor adopts radiator tube heating simultaneously, the flue gas that produces in radiator tube and gas-oil mixture are isolated, thus the quality of bio-oil and pyrolysis gas can be significantly improved, secondly the mode of burning is adopted to carry out manipulation of regeneration to decaying catalyst, and obtained regenerated catalyst heat is delivered to mixing device mix with biomass material, not only can solve the problem that in prior art, in catalytic pyrolysis of biomass process, catalyst levels is large, and biomass can be transferred heat to as solid thermal carriers, thus improve the catalyse pyrolysis efficiency of biomass further, additionally by returning the radiation heating tube of moving bed pyrolysis reactor as thermal source using what produce in combustion processes for heat smoke, the efficiency utilization of waste heat in system can be realized, thus significantly reduce processing cost.
With reference to figure 8, the system according to the pyrolysis biomass of the embodiment of the present invention comprises further:
Drying installation 600: according to embodiments of the invention, drying installation 600 is connected with biomass inlet 101, and is suitable for, before biomass and catalyzer are carried out combination treatment in mixing device 100, to carry out drying treatment in advance to biomass.Thus, effectively can reduce the moisture in biomass, thus improve the catalyse pyrolysis efficiency of biomass further.It should be noted that, those skilled in the art can select the actual conditions of drying treatment according to actual needs.
With reference to figure 9, the system according to the pyrolysis biomass of the embodiment of the present invention comprises further:
First cleaning apparatus 700: according to embodiments of the invention, first cleaning apparatus 700 has gas-oil mixture import 701, oil gas vent 702 and solid particulate outlet 703 after dedusting, gas-oil mixture import 701 and gas-oil mixture export 204 and are connected, after dedusting, oil gas vent 702 is connected with gas-oil mixture entrance 301, solid particulate outlet 703 is connected with using pyrolysis product inlet 402, and be suitable for before gas-oil mixture is carried out cooling process, in advance dust removal process is carried out to gas-oil mixture, thus oil gas and solid particulate after dedusting can be obtained, and the solid particulate return catalizer regenerating unit 400 that will obtain.Thus, dust removal process was carried out in advance before gas-oil separation is carried out to gas-oil mixture, the charcoal that can carry in efficient recovery gas-oil mixture and deactivated catalyst particles, thus not only can the quality of bio-oil and pyrolysis gas, and can the utilization ratio of remarkable raw material.
With reference to Figure 10, the system according to the pyrolysis biomass of the embodiment of the present invention comprises further:
Second cleaning apparatus 800: according to embodiments of the invention, after second cleaning apparatus 800 has dust-laden heat supply smoke inlet 801, dedusting, heat supply exhanst gas outlet 802 and thin ash export 803, dust-laden heat supply smoke inlet 801 is connected with heat supply exhanst gas outlet 403, after dedusting, heat supply exhanst gas outlet 802 is connected with heat supply smoke inlet 202, and be suitable at the radiation heating tube returning moving bed pyrolysis reactor for heat smoke as before thermal source, dust removal process is carried out in advance to for heat smoke, thus for heat smoke and thin ash after obtaining dedusting.Thus, the efficiency utilization for material waste heat in heat smoke in subsequent process can be realized.
With reference to Figure 11, the system according to the pyrolysis biomass of the embodiment of the present invention comprises further:
Heat-exchanger rig 900: according to embodiments of the invention, heat-exchanger rig 900 has hot grey entrance 901, cooling smoke inlet 902, intensification exhanst gas outlet 903 and lime-ash outlet 904, the grey entrance 901 of heat and heat ash exports 503 and carefully greyly export one of being at least connected in 803, cooling smoke inlet 902 is connected with cooling exhanst gas outlet 203, intensification exhanst gas outlet 903 is connected with drying installation 600, and be suitable for one of at least to carry out heat exchange process with cooling flue gas in hot ash and thin ash, thus intensification flue gas and lime-ash can be obtained, and intensification flue gas is returned drying installation 600 pairs of biomass and carry out drying treatment.Concrete, by by intensification flue gas and biomass transmission of heat by contact, not only can carry out drying treatment to biomass, and the temperature of flue gas can be reduced, thus eliminate cooling process is carried out to flue gas, and the flue gas after obtained cooling is directly discharged by chimney.Thus, by by hot ash and one of at least contacting with the flue gas that the radiation heating tube in pyrolytic process produces in thin ash, one of at least entrained waste heat of heat ash and thin ash can be passed to flue gas, in subsequent process, adopt intensification flue gas to carry out drying treatment to biomass, thus the efficiency utilization of internal system waste heat can be realized, and then reduce energy consumption cost further.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiments are only descriptive, and do not limit the present invention in any way.
Embodiment
With reference to shown in Figure 12, by pine sawdust raw material (V
ad=73.88%, Q
net, ar=18.41MJ/kg) be stored in raw material cabin 1, be delivered to dryness storehouse 2 by belt transport and carry out drying treatment, reduce the moisture content in pine sawdust, then moving bed pyrolysis reactor 6 is sent into after being delivered to biomass and catalyst mix feeding unit 5 and catalyst mix by biomass feeding unit capable 3, radiation heating tube on moving bed pyrolysis reactor 18 pairs of mixtures carry out radiation heating intensification and catalyse pyrolysis reaction (500-750 DEG C) occur, the gas-oil mixture (500-600 DEG C) produced enters hot precipitator 7 by reactor head pipeline and carries out granule dedusting, then enter oil gas water cooler 8 to lower the temperature, bio-oil and pyrolysis gas is obtained respectively after separation, pyrolysis gas enters subsequently and obtains net heat after pyrolysis gas refining plant 9 purifies and to vent one's spleen product, the using pyrolysis product (500-600 DEG C) containing charcoal and decaying catalyst that in moving bed pyrolysis reactor, pyrolysis produces is sent into catalyst regeneration device 12 through high-temp solid e Foerderanlage 10 and is together burnt with the air from blower fan 13, obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst, then the solid product feeding catalyst recovery devices 14 containing heat ash and regenerated catalyst is carried out being separated and recovery of catalyzer and heat ash, regenerated catalyst (700-800 DEG C) after recovery enter hybrid feed mechanism 5 as solid thermal carriers and catalyzer with mix from the make-up catalyst of make-up catalyst feeding unit 4 and dried biomass after send into moving bed pyrolysis reactor 6 and carry out pyrolysis processing, and the heat smoke that supplies in catalyst regeneration device 12 carries out dust removal process through cleaning apparatus 15, heat smoke and thin ash is supplied after obtaining dedusting, heat ash with together enter gas-solid heat exchange device 16 from the thin ash of cleaning apparatus 15 and heat cooling flue gas (<150 DEG C) from the fume extractor 11 collecting radiation heating tube, flue gas (200-250 DEG C after intensification, oxygen level <10%) enter dryness storehouse drying is carried out to biomass material, then discharge after passing into chimney.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a method for pyrolysis biomass, is characterized in that, comprising:
(1) biomass and catalyzer are carried out combination treatment, to obtain mixture;
(2) described mixture is carried out pyrolysis processing in moving bed pyrolysis reactor, to obtain gas-oil mixture and to contain the using pyrolysis product of charcoal and decaying catalyst;
(3) described gas-oil mixture is carried out cooling process, to obtain bio-oil and pyrolysis gas;
(4) the described using pyrolysis product containing charcoal and decaying catalyst is burnt with air, to obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst;
(5) radiation heating tube of the described moving bed pyrolysis reactor in step (2) is returned as thermal source using described for heat smoke, to obtain flue gas of lowering the temperature; And
(6) carry out separating treatment by described containing heat ash and the solid product of regenerated catalyst, to obtain regenerated catalyst respectively and heat is grey, and described regenerated catalyst is returned step (1) and mix with described mixture.
2. method according to claim 1, is characterized in that, comprises further:
(7) before described biomass and described catalyzer are carried out combination treatment, in advance drying treatment is carried out to described biomass.
3. method according to claim 1 and 2, is characterized in that, comprises further:
(8) before described gas-oil mixture is carried out cooling process, in advance dust removal process is carried out to described gas-oil mixture, so that oil gas and solid particulate after obtaining dedusting, and described solid particulate is returned step (4) and described air and burn.
4. method according to claim 3, is characterized in that, comprises further:
(9) using the described radiation heating tube returning the described moving bed pyrolysis reactor in step (2) for heat smoke as before thermal source, carry out dust removal process to described for heat smoke in advance, so that for heat smoke and thin ash after obtaining dedusting.
5. method according to claim 4, is characterized in that, comprises further:
(10) the described cooling flue gas one of at least obtained with step (5) in described heat ash and described thin ash is carried out heat exchange process, to obtain intensification flue gas and lime-ash, and described intensification flue gas is returned step (7) drying treatment is carried out to described biomass.
6. a system for pyrolysis biomass, described system, for implementing the claims the method for the pyrolysis biomass described in any one of 1-5, is characterized in that, described system comprises:
Mixing device, described mixing device has the outlet of biomass inlet, catalyst inlet and mixture, and is suitable for biomass and catalyzer to carry out combination treatment, to obtain mixture;
Moving bed pyrolysis reactor, described moving bed pyrolysis reactor has mixture entrance, heat supply smoke inlet, cooling exhanst gas outlet, gas-oil mixture outlet and using pyrolysis product exit, described mixture entrance exports with described mixture and is connected, and be suitable for described mixture to carry out pyrolysis processing, to obtain gas-oil mixture and to contain the using pyrolysis product of charcoal and decaying catalyst;
Refrigerating unit, described refrigerating unit has gas-oil mixture entrance, bio-oil outlet and pyrolysis gas outlet, described gas-oil mixture entrance exports with described gas-oil mixture and is connected, and is suitable for described gas-oil mixture to carry out cooling process, to obtain bio-oil and pyrolysis gas;
Catalyst regeneration device, described catalyst regeneration device has gas inlet, using pyrolysis product inlet, heat supply exhanst gas outlet and solid product outlet, described using pyrolysis product inlet is connected with described using pyrolysis product exit, described heat supply exhanst gas outlet is connected with described heat supply smoke inlet, and be suitable for described using pyrolysis product containing charcoal and decaying catalyst and air to burn, to obtain for heat smoke and solid product that is grey containing heat and regenerated catalyst, and return the radiation heating tube of described moving bed pyrolysis reactor as thermal source using described for heat smoke, to obtain flue gas of lowering the temperature, and
Tripping device, described tripping device has the outlet of solid product entrance, regenerated catalyst outlet and heat ash, described solid product entrance exports with described solid product and is connected, described regenerated catalyst outlet is connected with described catalyst inlet, and be suitable for the described solid product containing heat ash and regenerated catalyst to carry out separating treatment, to obtain regenerated catalyst and heat ash respectively, and described regenerated catalyst returned described mixing device.
7. system according to claim 6, is characterized in that, comprises further:
Drying installation, described drying installation is connected with described biomass inlet, and is suitable for carrying out drying treatment to described biomass in advance before described biomass and described catalyzer are carried out combination treatment.
8. the system according to claim 6 or 7, is characterized in that, comprises further:
First cleaning apparatus, described first cleaning apparatus has gas-oil mixture import, oil gas vent and solid particulate outlet after dedusting, described gas-oil mixture import exports with described gas-oil mixture and is connected, after described dedusting, oil gas vent is connected with described gas-oil mixture entrance, described solid particulate outlet is connected with described using pyrolysis product inlet, and be suitable for before described gas-oil mixture is carried out cooling process, in advance dust removal process is carried out to described gas-oil mixture, so that oil gas and solid particulate after obtaining dedusting, and described solid particulate is returned described catalyst regeneration device.
9. system according to claim 8, is characterized in that, comprises further:
Second cleaning apparatus, after described second cleaning apparatus has dust-laden heat supply smoke inlet, dedusting, heat supply exhanst gas outlet and thin ash export, described dust-laden heat supply smoke inlet is connected with described heat supply exhanst gas outlet, after described dedusting, heat supply exhanst gas outlet is connected with described heat supply smoke inlet, and be suitable for using the described radiation heating tube returning described moving bed pyrolysis reactor for heat smoke as before thermal source, dust removal process is carried out for heat smoke in advance, so that for heat smoke and thin ash after obtaining dedusting to described.
10. system according to claim 8, is characterized in that, comprises further:
Heat-exchanger rig, described heat-exchanger rig has hot grey entrance, the outlet of cooling smoke inlet, intensification exhanst gas outlet and lime-ash, one of being at least connected during the grey entrance of described heat and described heat ash export and export with described thin ash, described cooling smoke inlet is connected with described cooling exhanst gas outlet, described intensification exhanst gas outlet is connected with described drying installation, and be suitable for one of at least to carry out heat exchange process with described cooling flue gas in described heat ash and described thin ash, to obtain intensification flue gas and lime-ash, and described intensification flue gas is returned described drying installation.
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