CN103289751A - Method and device for preparing combustible gas by utilizing biomass - Google Patents
Method and device for preparing combustible gas by utilizing biomass Download PDFInfo
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- CN103289751A CN103289751A CN2013102368121A CN201310236812A CN103289751A CN 103289751 A CN103289751 A CN 103289751A CN 2013102368121 A CN2013102368121 A CN 2013102368121A CN 201310236812 A CN201310236812 A CN 201310236812A CN 103289751 A CN103289751 A CN 103289751A
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- 239000002028 Biomass Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 28
- 150000003839 salts Chemical class 0.000 claims abstract description 96
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 239000012620 biological material Substances 0.000 claims abstract description 21
- 238000010792 warming Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 112
- 238000002844 melting Methods 0.000 claims description 64
- 230000008018 melting Effects 0.000 claims description 61
- 239000000203 mixture Substances 0.000 claims description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 150000005323 carbonate salts Chemical class 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 235000011089 carbon dioxide Nutrition 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 7
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 6
- 235000011613 Pinus brutia Nutrition 0.000 claims description 6
- 241000018646 Pinus brutia Species 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 238000002309 gasification Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 3
- 238000005338 heat storage Methods 0.000 abstract 1
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011946 reduction process Methods 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method and a device for preparing combustible gas by utilizing biomass, and belongs to the technical field of energy chemistry. The method comprises the following steps of: adding a catalyst into basic carbonate, and mixing sufficiently and uniformly, warming and drying, continuously warming, thereby obtaining a basic carbonate molten salt system; adding a biologic material into the basic carbonate molten salt system, and meanwhile, continuously charging gasification gas, thus obtaining the combustible gas. The body of the device used for preparing the combustible gas is a molten salt reactor, a gas outlet is formed in the top of the molten salt reactor, a molten salt outlet and a gasification gas inlet are formed in the bottom of the molten salt reactor, the interior of the molten salt reactor is provided with a molten salt reactor grid, and a charging device is further installed above the molten salt reactor grid of the molten salt reactor. According to the method provided by the invention, the heat storage and heat transmission characteristics of the molten salt are utilized, so that the gasification efficiency of the biomass are effectively improved, and meanwhile, the gas quality of the product combustible gas is improved; the device provided by the invention can be used for preventing the molten salt from being frozen, effectively storing the heat energy released in the reaction, and improving the heat efficiency of the whole biomass gasification process.
Description
Technical field
The present invention relates to a kind of biomass and produce method and the device of combustible gas, belong to energy technical field of chemistry.
Background technology
Along with exhaustion and the human concern to global environmental problem of fossil energy, biomass energy substitutes the research and development that fossil energy is utilized, and has become the focus of lot of domestic and foreign scholar's research and concern.
The gasification of traditional biological matter is produced the combustible gas process and is divided into drying, pyrolysis, oxidation and reduction four-stage:
(1) drying process: after biomass enter vapourizing furnace, separating out surface-moisture under the effect of heat, is main drying stage in the time of 200～300 ℃;
(2) pyrolytic reaction: when temperature is elevated to more than 300 ℃, begin to carry out pyrolytic reaction.Biomass just can discharge the volatile matter about 70% in the time of 300～400 ℃, and coal to 800 ℃ just can discharge about 30% volatile matter.The volatile matter that pyrolytic reaction is separated out mainly comprises water vapour, H
2, CO, CH
4, tar and other hydrocarbon polymers;
(3) oxidizing reaction: the residue charcoal of pyrolysis and the air of introducing react, and temperature of reaction is about 800～900 ℃;
(4) reduction process: reduction process does not have oxygen to exist, and charcoal reacts in the products of combustion in the zone of oxidation and water vapour and the reducing zone, generates H
2With CO etc.These gases and volatile matter have been formed inflammable gas, have finished the conversion process of solid biomass to geseous fuel.
The problem that exists in the combustible gas process is produced in above-mentioned traditional biological matter gasification to be had: in four main phase of gasification, the oxidizing reaction stage has discharged a large amount of heat energy, owing to fail to collect heat energy wherein in the conventional production methods, has caused the waste of the energy; Need in the reduction process to consume a large amount of heat energy, need the external world that corresponding energy is provided for this reason.Therefore, a large amount of loss and the consumption of heat energy reduces the thermo-efficiency of whole biomass gasification process greatly in the reaction.
Summary of the invention
Produce problem and the deficiency that exists in the combustible gas process in view of above traditional biological matter gasification, the invention provides method and device that a kind of biomass are produced combustible gas.This method is utilized the heat-accumulating heat-transfer characteristic of melting salt, effectively raise the gasification efficiency of biomass and improved the GAS QUALITY of product combustible gas simultaneously, and the device that these biomass are produced combustible gas can prevent that fused salt from solidifying, the thermal energy storage that will discharge in effectively will reacting improves the thermo-efficiency of whole biomass gasification process.
A kind of biomass are produced the method for combustible gas, and its concrete steps comprise as follows:
(1) after the adding catalyzer also fully mixes in subcarbonate, temperature rise rate with 2～10 ℃/min rises to 100～400 ℃ of drying 0.5～2h with mixture temperature, continuing to be warming up to temperature then is 800～1200 ℃, obtains subcarbonate melting salt system;
(2) add biological material in step (1) the gained subcarbonate melting salt system and obtain mixture system, continue to feed temperature then in the mixture system and be gasifying gas reaction 1～3h of 200 ℃～400 ℃, the gas that mixture system constantly overflows in the reaction process is and comprises CO
2, CO, H
2, CH
4, C
2H
4And C
2H
6Inflammable gas.
Subcarbonate in the described step (1) is K
2CO
3, Na
2CO
3Or Li
2CO
3One or more arbitrary proportion mixtures.
Catalyzer is Ce in the described step (1)
0.7Zr
0.3O
2, CeO
2-ZrO
2, Fe
2O
3, MnFe
2O
4, one or more arbitrary proportion mixtures in iron ore, copper oxide ore or the zinc oxide ore; Catalyst consumption is 1%～10% of subcarbonate quality, and its granularity is 0.02～5000 μ m.
Biological material is wood chip in the described step (2), pine sawdust, and one or more arbitrary proportion mixtures in nut-shell or the pine shell, its granularity is lower than 30wt% less than 10mm and water content, and the add-on of biological material is 1%～10% of subcarbonate quality.
Gasifying gas in the described step (2) is water vapor and common gas, the gasifying gas flow that feeds is 20～200mL/min, common gas is one or more arbitrary proportion mixtures in oxygen or the carbonic acid gas, and the volume percent of water vapour is less than 10% in the gasifying gas.
The mixture system question response of described step (2) is finished by filtering every sieve less than 0.02 μ m, be the biological material that reacts after finishing every the sieve below, go up the remaining basic carbonate salt system that is every sieve, the basic carbonate salt system returns in the step (1) and recycles.
Biomass of the present invention are produced the device of combustible gas, device body is melting salt reactor 2, its top has pneumatic outlet 1, bottom to have fused salt outlet 5 and gasifying gas entrance 6, inside melting salt reactor to be arranged every sieve 7, and the melting salt reactor of melting salt reactor 2 also is equipped with feeding device 3 every sieve 7 tops.
Described melting salt reactor is installed in melting salt reactor 2 apart from below the 1/3 and optional position between the fused salt outlet 5 of pneumatic outlet 1 every sieve 7 levels.
Side and inside that described feeding device 3 is installed in melting salt reactor 2 have feeding screw 4.
Described melting salt reactor every the sieve 7 screen clothes porosity less than 0.02 μ m.
The advantage that the present invention has and effect are:
(1) this method adopts and has the medium of fused salt of accumulation of heat-heat transmission function, but storage reaction process liberated heat, and the effect of serving as thermal barrier and reaction medium is rationally utilized chemical heat and outside heat;
(2) this method is under melting salt flow media condition, and reaction system relates to gas-liquid-solid three phase flow, has accelerated the contact between catalyzer, melting salt, biomass and the gasifying gas, increases reaction efficiency;
(3) combustible gas improves self gaseous constituent through melting salt in this method, has improved the content of hydrogen and carbon monoxide in the combustible gas, thus the quality of raising combustible gas;
(4) the molten salt reaction system has been avoided biomass and all directly danger of contact generation blast of gasifying gas in traditional reaction system in this method;
(5) this device can prevent that fused salt from solidifying, and the thermal energy storage that will discharge in effectively will reacting improves the thermo-efficiency of whole biomass gasification process.
Description of drawings
Fig. 1 is the setting drawing that biomass of the present invention are produced combustible gas.
Each label is among the figure: the 1-pneumatic outlet, and the 2-melting salt reactor, the 3-feeding device, the 4-feeding screw, 5-fused salt outlet, 6-gasifying gas entrance, 7-melting salt reactor be every sieve, 8-catalyzer, 9-melting salt.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, method and the device of biomass of the present invention being produced combustible gas are described further.
Embodiment one: the concrete steps that biomass are produced combustible gas comprise: (1) is at 50gK
2CO
3Adding granularity in the subcarbonate is the CeO of 0.02 μ m
2-ZrO
2Catalyzer (add-on be subcarbonate quality 1%) and fully mix after, with the temperature rise rate of 2 ℃/min mixture temperature is risen to 100 ℃ of dry 0.5h, continuing to be warming up to temperature then is 800 ℃, obtains K
2CO
3Subcarbonate melting salt system; (2) to step (1) gained K
2CO
3Add granularity in the subcarbonate melting salt system and be 1mm, water content and be 25wt%, mass ratio and be the wood chip of 1:1 and pine sawdust biological material (add-on be subcarbonate quality 1%) obtain mixture system, (gasifying gas is water vapor and oxygen to continue to feed temperature then in the mixture system and be 200 ℃, gas flow and be the gasifying gas of 20 mL/min, the water vapor volume percent is 9% in the gasifying gas) reaction 1h, the gas that mixture system constantly overflows in the reaction process is and comprises CO
2, CO, H
2, CH
4, C
2H
4And C
2H
6Inflammable gas.The mixture system question response of described step (2) is finished by filtering every sieve less than 0.02 μ m, be the biological material that reacts after finishing every the sieve below, go up the remaining basic carbonate salt system that is every sieve, the basic carbonate salt system returns in the step (1) and recycles.
Produce as Fig. 1 biomass as described in the setting drawing of combustible gas, to produce the device body of combustible gas be melting salt reactor 2 to biomass in the present embodiment, it is that the melting salt reactor of 0.015 μ m is installed in melting salt reactor 2 apart from pneumatic outlet 1/3 place every sieve 7(level that its top has pneumatic outlet 1, bottom to have fused salt outlet 5 and gasifying gas entrance 6, inside that the screen cloth porosity is arranged), melting salt reactor 2 sides also are equipped with and are positioned at melting salt reactor every sieve 7 tops and the inner feeding device 3 that has feeding screw 4.
Embodiment two: the concrete steps that biomass are produced combustible gas comprise: (1) is the Na of 1:1 at the 50g mass ratio
2CO
3With Li
2CO
3The adding granularity is that the mass ratio of 5000 μ m is the Fe of 1:1:1 in the subcarbonate
2O
3, MnFe
2O
4With the mixed catalyst of iron ore (add-on be subcarbonate quality 10%) and after fully mixing, with the temperature rise rate of 10 ℃/min mixture temperature is risen to 400 ℃ of dry 2h, continuing to be warming up to temperature then is 1200 ℃, obtains Na
2CO
3With Li
2CO
3Subcarbonate melting salt system; (2) to step (1) gained Na
2CO
3With Li
2CO
3Add granularity in the subcarbonate melting salt system and be 1mm, water content and be 25wt% nut-shell biological material (add-on be subcarbonate quality 10%) obtain mixture system, (gasifying gas is water vapor, oxygen and carbonic acid gas to continue to feed temperature then in the mixture system and be 400 ℃, gas flow and be the gasifying gas of 200 mL/min, wherein the volume ratio of oxygen and carbonic acid gas is 1:1, the water vapor volume percent is 9% in the gasifying gas) reaction 3h, the gas that mixture system constantly overflows in the reaction process is and comprises CO
2, CO, H
2, CH
4, C
2H
4And C
2H
6Inflammable gas.The mixture system question response of described step (2) is finished by filtering every sieve less than 0.02 μ m, be the biological material that reacts after finishing every the sieve below, go up the remaining basic carbonate salt system that is every sieve, the basic carbonate salt system returns in the step (1) and recycles.
Produce as Fig. 1 biomass as described in the setting drawing of combustible gas, to produce the device body of combustible gas be melting salt reactor 2 to biomass in the present embodiment, it is that 0.019 μ m melting salt reactor is installed in melting salt reactor 2 apart from pneumatic outlet 1/2 place every sieve 7(level that its top has pneumatic outlet 1, bottom to have fused salt outlet 5 and gasifying gas entrance 6, inside that the screen cloth porosity is arranged), melting salt reactor 2 sides also are installed with the feeding device 3 that inside has feeding screw 4.
Embodiment three: the concrete steps that biomass are produced combustible gas comprise: (1) is the Na of 1:1 at the 50g mass ratio
2CO
3With Li
2CO
3The adding granularity is that the mass ratio of 1000 μ m is the Fe of 1:1:1 in the subcarbonate
2O
3, copper oxide ore and zinc oxide ore mixed catalyst (add-on be subcarbonate quality 8%) and fully mix after, with the temperature rise rate of 8 ℃/min mixture temperature is risen to 200 ℃ of dry 1h, continuing to be warming up to temperature then is 1000 ℃, obtains Na
2CO
3With Li
2CO
3Subcarbonate melting salt system; (2) to step (1) gained Na
2CO
3With Li
2CO
3Add granularity in the subcarbonate melting salt system and be 1mm, water content and be 25wt% pine shell biological material (add-on be subcarbonate quality 8%) obtain mixture system, (gasifying gas is water vapor, oxygen and carbonic acid gas to continue to feed temperature then in the mixture system and be 300 ℃, gas flow and be the gasifying gas of 100 mL/min, wherein the volume ratio of oxygen and carbonic acid gas is 1:1, the water vapor volume ratio is 9% in the gasifying gas) reaction 2h, the gas that mixture system constantly overflows in the reaction process is and comprises CO
2, CO, H
2, CH
4, C
2H
4And C
2H
6Inflammable gas.The mixture system question response of described step (2) is finished by filtering every sieve less than 0.02 μ m, be the biological material that reacts after finishing every the sieve below, go up the remaining basic carbonate salt system that is every sieve, the basic carbonate salt system returns in the step (1) and recycles.
Produce as Fig. 1 biomass as described in the setting drawing of combustible gas, to produce the device body of combustible gas be melting salt reactor 2 to biomass in the present embodiment, its top has pneumatic outlet 1, bottom to have the porosity that there is a screen cloth fused salt outlet 5 and gasifying gas entrance 6, inside to export 5 tops less than the melting salt reactor of 0.02 μ m every the fused salt that sieve 7(level is installed in melting salt reactor 2), melting salt reactor 2 sides also are equipped with feeding device 3.
Embodiment four: the concrete steps that biomass are produced combustible gas comprise: (1) is the K of 1:1:1 at the 200g mass ratio
2CO
3, Na
2CO
3With Li
2CO
3Add granularity in the subcarbonate less than the Ce of 100 μ m
0.7Zr
0.3O
2Catalyzer (add-on be subcarbonate quality 5%) and fully mix after, with the temperature rise rate of 10 ℃/min mixture temperature is risen to 300 ℃ of dry 1h, continuing to be warming up to temperature then is 800 ℃, obtains K
2CO
3, Na
2CO
3With Li
2CO
3Subcarbonate melting salt system; (2) to step (1) gained K
2CO
3, Na
2CO
3With Li
2CO
3Adding granularity in the subcarbonate melting salt system is 0.5mm, water content be 15wt% wood chip biological material (add-on be subcarbonate quality 10%) obtain mixture system, continuing in the mixture system then to feed temperature is 300 ℃, gas flow is that (gasifying gas is water vapor for the gasifying gas of 20mL/min, oxygen and carbonic acid gas, wherein the volume ratio of oxygen and carbonic acid gas is 1:1, the water vapor volume percent is 9% in the gasifying gas) reaction 2h, mixture system constantly overflows inflammable gas in the reaction process, and the composition of inflammable gas is as shown in table 1.The mixture system question response of described step (2) is finished by filtering every sieve less than 0.02 μ m, be the biological material that reacts after finishing every the sieve below, go up the remaining basic carbonate salt system that is every sieve, the basic carbonate salt system returns in the step (1) and recycles.
Produce as Fig. 1 biomass as described in the setting drawing of combustible gas, to produce the device body of combustible gas be melting salt reactor 2 to biomass in the present embodiment, its top has pneumatic outlet 1, bottom to have the porosity that there is a screen cloth fused salt outlet 5 and gasifying gas entrance 6, inside to export 5 tops less than the melting salt reactor of 0.02 μ m every the fused salt that sieve 7(level is installed in melting salt reactor 2), melting salt reactor 2 also is equipped with feeding device 3.
Table 1 medium of fused salt and Ce
0.7Zr
0.3O
2The composition of the combustible gas that produces under the catalysis
Embodiment five: the concrete steps that biomass are produced combustible gas comprise: (1) is the K of 2:1 at the 200g mass ratio
2CO
3With Na
2CO
3Add granularity in the subcarbonate less than the Fe of 100 μ m
2O
3Catalyzer (add-on be subcarbonate quality 10%) and fully mix after, with the temperature rise rate of 10 ℃/min mixture temperature is risen to 300 ℃ of dry 1h, continuing to be warming up to temperature then is 900 ℃, obtains K
2CO
3With Na
2CO
3Subcarbonate melting salt system; (2) to the K of step (1) gained
2CO
3With Na
2CO
3Add granularity in the subcarbonate melting salt system and be 1mm, water content and be 25wt% wood chip biological material (add-on be subcarbonate quality 10%) obtain mixture system, (gasifying gas is water vapor and oxygen to continue to feed temperature then in the mixture system and be 300 ℃, gas flow and be the gasifying gas of 20mL/min, the water vapor volume percent is 9% in the gasifying gas) reaction 2h, mixture system constantly overflows inflammable gas in the reaction process, and the composition of inflammable gas is as shown in table 2.The mixture system question response of described step (2) is finished by filtering every sieve less than 0.02 μ m, be the biological material that reacts after finishing every the sieve below, go up the remaining basic carbonate salt system that is every sieve, the basic carbonate salt system returns in the step (1) and recycles.
Produce as Fig. 1 biomass as described in the setting drawing of combustible gas, to produce the device body of combustible gas be melting salt reactor 2 to biomass in the present embodiment, its top has pneumatic outlet 1, bottom to have the porosity that there is a screen cloth fused salt outlet 5 and gasifying gas entrance 6, inside to be installed in melting salt reactor 2 apart from pneumatic outlet 1/3 place less than the melting salt reactor of 0.02 μ m every sieve 7(level), melting salt reactor 2 also is equipped with feeding device 3.
Table 2 medium of fused salt and Fe
2O
3The composition of the combustible gas that produces under the catalysis
Embodiment six: the concrete steps that biomass are produced combustible gas comprise: (1) is at 200g Li
2CO
3Add granularity in the subcarbonate less than the iron ore catalyzer of 100 μ m (add-on be subcarbonate quality 10%) and after fully mixing, temperature rise rate with 10 ℃/min rises to 300 ℃ of dry 1h with mixture temperature, continuing to be warming up to temperature then is 1000 ℃, obtains Li
2CO
3Subcarbonate melting salt system; (2) to step (1) gained Li
2CO
3Add granularity in the subcarbonate melting salt system and be 1mm, water content and be 11wt% wood chip biological material (add-on be subcarbonate quality 10%) obtain mixture system, (gasifying gas is water vapor and oxygen to continue to feed temperature then in the mixture system and be 300 ℃, gas flow and be the gasifying gas of 20mL/min, the water vapor volume percent is 9% in the gasifying gas) reaction 2h, mixture system constantly overflows inflammable gas in the reaction process, and the composition of inflammable gas is as shown in table 3.The mixture system question response of described step (2) is finished by filtering every sieve less than 0.02 μ m, be the biological material that reacts after finishing every the sieve below, go up the remaining basic carbonate salt system that is every sieve, the basic carbonate salt system returns in the step (1) and recycles.
Produce as Fig. 1 biomass as described in the setting drawing of combustible gas, to produce the device body of combustible gas be melting salt reactor 2 to biomass in the present embodiment, its top has pneumatic outlet 1, bottom to have the porosity that there is a screen cloth fused salt outlet 5 and gasifying gas entrance 6, inside to be installed in melting salt reactor 2 apart from pneumatic outlet 1/3 place less than the melting salt reactor of 0.02 μ m every sieve 7(level), melting salt reactor 2 also is equipped with feeding device 3.
The composition of the combustible gas that produces under table 3 medium of fused salt and the iron ore catalysis
Claims (10)
1. biomass are produced the method for combustible gas, and it is as follows to it is characterized in that concrete steps comprise:
(1) after the adding catalyzer also fully mixes in subcarbonate, temperature rise rate with 2～10 ℃/min rises to 100～400 ℃ of drying 0.5～2h with mixture temperature, continuing to be warming up to temperature then is 800～1200 ℃, obtains subcarbonate melting salt system;
(2) add biological material in step (1) the gained subcarbonate melting salt system and obtain mixture system, continue to feed temperature then in the mixture system and be gasifying gas reaction 1～3h of 200 ℃～400 ℃, the gas that mixture system constantly overflows in the reaction process is and comprises CO
2, CO, H
2, CH
4, C
2H
4And C
2H
6Inflammable gas.
2. biomass according to claim 1 are produced the method for combustible gas, it is characterized in that: the subcarbonate in the described step (1) is K
2CO
3, Na
2CO
3Or Li
2CO
3One or more arbitrary proportion mixtures.
3. biomass according to claim 1 are produced the method for combustible gas, it is characterized in that: catalyzer is Ce in the described step (1)
0.7Zr
0.3O
2, CeO
2-ZrO
2, Fe
2O
3, MnFe
2O
4, one or more arbitrary proportion mixtures in iron ore, copper oxide ore or the zinc oxide ore; Catalyst consumption is 1%～10% of subcarbonate quality, and its granularity is 0.02～5000 μ m.
4. biomass according to claim 1 are produced the method for combustible gas, it is characterized in that: biological material is wood chip in the described step (2), pine sawdust, one or more arbitrary proportion mixtures in nut-shell or the pine shell, its granularity is lower than 30wt% less than 10mm and water content, and the add-on of biological material is 1%～10% of subcarbonate quality.
5. biomass according to claim 1 are produced the method for combustible gas, it is characterized in that: the gasifying gas in the described step (2) is water vapor and common gas, the gasifying gas flow that feeds is 20～200mL/min, common gas is one or more arbitrary proportion mixtures in oxygen or the carbonic acid gas, and the volume percent of water vapour is less than 10% in the gasifying gas.
6. biomass according to claim 1 are produced the method for combustible gas, it is characterized in that: the mixture system question response of described step (2) is finished by filtering every sieve less than 0.02 μ m, be the biological material that reacts after finishing every the sieve below, go up the remaining basic carbonate salt system that is every sieve, the basic carbonate salt system returns in the step (1) and recycles.
7. biomass as claimed in claim 1 are produced the device of combustible gas, it is characterized in that: device body is melting salt reactor (2), its top has pneumatic outlet (1), bottom to have fused salt outlet (5) and gasifying gas entrance (6), inside melting salt reactor to be arranged every sieve (7), and the melting salt reactor of melting salt reactor (2) also is equipped with feeding device (3) every sieve (7) top.
8. biomass according to claim 7 are produced the device of combustible gas, it is characterized in that: described melting salt reactor is installed in melting salt reactor (2) apart from below the 1/3 and optional position between the fused salt outlet (5) of pneumatic outlet (1) every sieve (7) level.
9. biomass according to claim 7 are produced the device of combustible gas, it is characterized in that: side and inside that described feeding device (3) is installed in melting salt reactor (2) have feeding screw (4).
10. biomass according to claim 7 are produced the device of combustible gas, it is characterized in that: described melting salt reactor every the sieve (7) screen cloth porosity less than 0.02 μ m.
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| CN109913272A (en) * | 2019-04-17 | 2019-06-21 | 浙江工业大学 | The device and technique of gasification of biomass hydrogen-rich synthetic gas in a kind of absorption enhancement fused salt |
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| CN112831351A (en) * | 2020-12-30 | 2021-05-25 | 西安交通大学 | Method for in-situ resource utilization of high-temperature carbon dioxide of power plant |
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Application publication date: 20130911 |