CN108504377B - Method for preparing organic nitrogen-containing compound by catalytic thermal cracking of blue algae - Google Patents
Method for preparing organic nitrogen-containing compound by catalytic thermal cracking of blue algae Download PDFInfo
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- CN108504377B CN108504377B CN201810295350.3A CN201810295350A CN108504377B CN 108504377 B CN108504377 B CN 108504377B CN 201810295350 A CN201810295350 A CN 201810295350A CN 108504377 B CN108504377 B CN 108504377B
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- organic nitrogen
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 150000001875 compounds Chemical class 0.000 title claims abstract description 32
- 125000001477 organic nitrogen group Chemical group 0.000 title claims abstract description 32
- 238000004227 thermal cracking Methods 0.000 title claims abstract description 28
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 17
- 241000195493 Cryptophyta Species 0.000 title claims description 31
- 239000003054 catalyst Substances 0.000 claims abstract description 29
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000011261 inert gas Substances 0.000 claims abstract description 19
- 239000002808 molecular sieve Substances 0.000 claims abstract description 12
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 11
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 241000192700 Cyanobacteria Species 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000000197 pyrolysis Methods 0.000 claims description 15
- 239000007791 liquid phase Substances 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 230000002000 scavenging effect Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- -1 nickel-aluminum metal oxide Chemical class 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 4
- 229960001545 hydrotalcite Drugs 0.000 claims description 4
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 7
- 150000004706 metal oxides Chemical class 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000012075 bio-oil Substances 0.000 description 17
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- LFYMLMKKOJHYFY-UHFFFAOYSA-N [O-2].[Al+3].[Ni+2] Chemical compound [O-2].[Al+3].[Ni+2] LFYMLMKKOJHYFY-UHFFFAOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000012084 conversion product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000002897 organic nitrogen compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/03—Catalysts comprising molecular sieves not having base-exchange properties
- B01J29/0308—Mesoporous materials not having base exchange properties, e.g. Si-MCM-41
- B01J29/0316—Mesoporous materials not having base exchange properties, e.g. Si-MCM-41 containing iron group metals, noble metals or copper
- B01J29/0333—Iron group metals or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/041—Mesoporous materials having base exchange properties, e.g. Si/Al-MCM-41
- B01J29/042—Mesoporous materials having base exchange properties, e.g. Si/Al-MCM-41 containing iron group metals, noble metals or copper
- B01J29/044—Iron group metals or copper
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Catalysts (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a method for preparing organic nitrogen-containing compounds by catalytic thermal cracking of blue-green algae, which takes the blue-green algae as a raw material and MCM-41 molecular sieve loaded nickel-aluminum composite metal oxide as a catalyst to obtain the high-content organic nitrogen-containing compounds under the atmosphere of ammonia gas and inert gas at a certain flow rate. The catalyst used in the invention has certain acidity and a special pore channel structure, and the ammonia gas atmosphere also provides active groups, so that the content of organic nitrogen-containing compounds in the oil phase is obviously improved, and the yield of the oil phase is also improved.
Description
Technical Field
The invention relates to the technical field of biomass and preparation thereof, in particular to a method for preparing an organic nitrogen-containing compound by catalytic thermal cracking of blue algae.
Background
The world faces severe environmental issues due to the constant demand for energy and the consumption of fossil energy. Blue algae due to its short growth cycle, CO2The capture capability of the method and the advantage of not occupying farmland, so the method is considered to be one of the most promising energy raw materials. Thermal cracking of biomass, which converts biomass into gas, bio-oil and coke, is an important thermochemical conversion product containing over 400 organic compounds, many of which are widely recognized high value chemicals including hydrocarbons, phenols, furans and sugars. While organic nitrogen-containing compounds are the most valuable components. The organic nitrogen-containing compounds with high added value can be obtained by thermally cracking biomass and high nitrogen-containing substances. Organic nitrogen-containing compounds are the main components or precursors of pharmaceutical and fine chemicals. The nitrogen content in microalgae is higher than other biological species. The production of nitrogen-containing substances with high added values by thermally cracking microalgae is one of the methods for effectively utilizing the blue algae.
In order to obtain organic nitrogen-containing compounds with high added value, the thermal cracking process of the blue algae must be controlled, mainly the generation of target products is promoted, and the generation of other substances is inhibited. The catalytic thermal cracking is usually utilized to achieve the effect, and the catalyst mainly used at present is a zeolite molecular sieve such as ZSM-5, H-beta and the like, and although the molecular sieve has acidity and strong catalytic activity, the molecular sieve is mainly used for improving the quality of the bio-oil and reducing the nitrogen content and the oxygen content. In the patent publication No. CN101514295B, a method for preparing bio-oil by pyrolyzing microalgae in a downward fixed bed reactor by using a molecular sieve (HZSM-5, MCM-48 or HY) as a catalyst is provided. The method not only obtains higher bio-oil yield, but also improves the quality of the bio-oil. The main purpose of the patent is to increase the content of organic nitrogen-containing compounds.
Therefore, a new and effective method for preparing organic nitrogen-containing compounds by using blue algae is needed, which can meet the characteristics of low cost, simple method, capability of generating a large amount of organic nitrogen-containing compounds and the like.
Disclosure of Invention
The technical problem is as follows: the invention aims to provide a method for preparing organic nitrogen-containing compounds by catalytic thermal cracking of blue-green algae, which can realize the catalytic thermal cracking of the blue-green algae in an ammonia atmosphere to improve the content of the organic nitrogen-containing compounds in an oil phase and improve the added value of biological oil.
The technical scheme is as follows: the invention relates to a method for preparing organic nitrogen-containing compounds by catalytic thermal cracking of blue algae, which comprises the following steps:
1) mixing blue algae and a catalyst, filling the mixture into a fixed bed, purging the mixture for 15min by using 5-25 mL/min inert gas, exhausting air in the fixed bed, raising the reaction temperature to the pyrolysis temperature at a heating rate of 5-25 ℃/min by using a programmed temperature control device, immediately introducing ammonia gas when the reaction temperature reaches the pyrolysis temperature, and enabling the scavenging speed to be 5-25 mL/min;
2) and (3) carrying out constant-temperature reaction at the pyrolysis temperature for 10-90 min, immediately stopping conveying ammonia gas and a heating system after the reaction is finished, continuously introducing inert gas until the reaction temperature is reduced to room temperature, and condensing pyrolysis gas leaving a fixed bed to obtain a liquid-phase product, namely the organic nitrogen-containing compound.
Further, in the method, the catalyst is obtained by roasting molecular sieve MCM-41 loaded nickel-aluminum metal oxide at 500-600 ℃.
Further, in the method of the invention, the roasting temperature of the catalyst is 550 ℃, and the nickel-aluminum metal oxide is nickel-aluminum hydrotalcite.
Further, in the method, the mass ratio of the catalyst to the blue algae in the step 1) is (0.25-10) to 1, the particle sizes of the catalyst and the blue algae powder are both 0.1-0.8 mm, and the particle sizes of the blue algae and the catalyst in each reaction are consistent.
Further, in the method, the pyrolysis temperature is 400-650 ℃.
Furthermore, in the method, the inert gas is nitrogen or argon, and the content ratio of ammonia to the inert gas is (0.1-2) to 1.
The invention takes blue algae as raw material, MCM-41 molecular sieve loaded nickel-aluminum composite metal oxide as catalyst, and biological oil with high content of organic nitrogen-containing compound is obtained under the atmosphere of ammonia gas and inert gas at a certain flow rate.
Has the advantages that: compared with the prior art, the invention has the following advantages:
the catalyst used in the invention has the special pore channel structure of the MCM-41 molecular sieve, high specific surface area and weak acidity of the nickel-aluminum oxide. And the catalytic thermal cracking experiment is carried out in ammonia gas and inert gas, the ammonia gas can provide active groups, promote the generation of organic nitrogen-containing compounds, and inhibit secondary reaction to reduce the generation of other products. The catalyst MCM-41 molecular sieve loaded nickel-aluminum composite metal oxide and the synergistic effect of ammonia atmosphere can effectively improve the catalytic effect, improve the content of organic nitrogen-containing compounds in an oil phase and improve the added value of the bio-oil.
Detailed Description
The invention takes blue algae as raw material, MCM-41 molecular sieve loaded nickel-aluminum composite metal oxide as catalyst, and improves the content of organic nitrogen-containing compounds in oil phase by catalytic thermal cracking under the atmosphere of ammonia gas and inert gas at a certain flow rate, which comprises the following steps:
weighing a certain amount of blue algae and a catalyst, mixing and filling in a fixed bed. Before the reaction, 5-25 mL/min inert gas is used for purging for 15min, and air in the fixed bed is exhausted. The reaction is heated to the pyrolysis temperature of 400-650 ℃ at the heating rate of 5-25 ℃/min by a program temperature control device, ammonia gas is introduced immediately when the pyrolysis temperature is reached, and the scavenging speed is 5-25 mL/min. Then reacting for 30min at constant temperature of pyrolysis temperature, and immediately stopping conveying ammonia gas and a heating system after the reaction is finished. And continuously introducing inert gas until the reaction temperature is reduced to room temperature. The pyrolysis gas leaving the reactor is condensed to obtain liquid phase products (comprising an oil phase and a water phase), the solid phase is in the reactor, and the gas phase is treated and discharged.
In the method, the mass ratio of the catalyst to the blue algae is 0.25: 1-10: 1, the particle sizes of the catalyst and the blue algae powder are 0.1-0.8 mm, and the particle sizes of the blue algae and the catalyst in each reaction are consistent.
In the method, the catalyst is obtained by roasting molecular sieve MCM-41 loaded nickel-aluminum hydrotalcite at 550 ℃.
In the method, the catalyst and the blue algae powder are uniformly mixed, and the mass ratio of the catalyst to the blue algae is 0.25: 1-5: 1; the inert gas is nitrogen or argon.
In the method, the catalyst and the blue algae powder are uniformly mixed, and the mass ratio of the catalyst to the blue algae is 0.25: 1-4: 1; the inert gas is nitrogen or argon.
In the method, the inert gas is nitrogen or argon, and the content ratio of ammonia to the inert gas is 0.1: 1-2: 1.
The present invention will be further explained with reference to examples. To fully illustrate the technical effect of the present invention, the examples are compared with the following process for obtaining organic nitrogen-containing compounds:
comparative process for obtaining organic nitrogen compounds: carrying out thermal cracking on magnesium-aluminum hydrotalcite and blue algae (the particle size is 0.4mm.) in a mass ratio of 1: 2 in an inert gas (helium) atmosphere, wherein the temperature rise procedure of the thermal cracking is as follows, the temperature rise speed is up to 550 ℃ at 20 ℃/min, reacting for 10s, then cooling to room temperature, and condensing pyrolysis gas to obtain a liquid phase. The liquid phase yield is 36.52%, and the bio-oil yield is 19.88%; the content of organic nitrogen-containing compounds was determined to be 10% by GC-MS analysis of the bio-oil.
The following are descriptions of examples of the present invention and comparative effects.
Example 1
MCM-41 loaded nickel-aluminum composite metal oxide and blue algae (the particle diameters are 0.3mm) in the mass ratio of 0.25: 1 are subjected to thermal cracking at the nitrogen scavenging speed of 40mL/min and the ammonia scavenging speed of 20mL/min, the temperature rise procedure of the thermal cracking is as follows, the temperature rise speed of 10 ℃/min reaches 400 ℃, the reaction is carried out for 10min, then the reaction is cooled to the room temperature, and the thermal cracking gas is condensed to obtain a liquid phase. The liquid phase yield is 51.02%, and the bio-oil yield is 27.02%; the content of organic nitrogen-containing compounds was determined to be 78.08% by GC-MS analysis of the bio-oil. Compared with a comparative experiment, the liquid phase yield is improved by 14.50%, the bio-oil yield is improved by 7.14%, and the content of nitrogen-containing organic matters is improved by 68.08%.
Example 2
MCM-41 loaded nickel-aluminum composite metal oxide and blue algae (the particle size is 0.4mm) in the mass ratio of 10: 1 are subjected to thermal cracking at the nitrogen scavenging speed of 1mL/min and the ammonia scavenging speed of 10mL/min, the temperature rise procedure of the thermal cracking is as follows, the temperature rise speed is 500 ℃ at 5 ℃/min, the reaction is carried out for 90min, then the reaction is cooled to the room temperature, and the thermal cracking gas is condensed to obtain a liquid phase. The liquid phase yield is 45.32%, and the bio-oil yield is 25.82%; the content of organic nitrogen-containing compounds was determined to be 68.92% by GC-MS analysis of the bio-oil. Compared with a comparative experiment, the liquid phase yield is improved by 8.80%, the bio-oil yield is improved by 5.94%, and the content of nitrogen-containing organic matters is improved by 58.92%.
Example 3
MCM-41 loaded nickel-aluminum composite metal oxide and blue algae (the particle size is 0.5mm) in the mass ratio of 0.5: 1 are subjected to thermal cracking at the nitrogen scavenging speed of 20mL/min and the ammonia scavenging speed of 20mL/min, the temperature rise procedure of the thermal cracking is as follows, the temperature rise speed of 25 ℃/min is up to 650 ℃, the reaction is carried out for 30min, then the reaction is cooled to the room temperature, and the thermal cracking gas is condensed to obtain a liquid phase. The liquid phase yield is 48.02 percent, and the bio-oil yield is 23.36 percent; the content of organic nitrogen-containing compounds was determined to be 67.01% by GC-MS analysis of the bio-oil. Compared with a comparative experiment, the liquid phase yield is improved by 11.50%, the bio-oil yield is improved by 3.48%, and the content of nitrogen-containing organic matters is improved by 57.01%.
Claims (5)
1. A method for preparing organic nitrogen-containing compounds by catalytic thermal cracking of blue algae is characterized by comprising the following steps:
1) mixing blue algae and a catalyst, filling the mixture into a fixed bed, purging the mixture for 15min by using 5-25 mL/min of inert gas, exhausting air in the fixed bed, raising the reaction temperature to the pyrolysis temperature at a heating rate of 5-25 ℃/min by using a programmed temperature control device, immediately introducing ammonia gas when the pyrolysis temperature is reached, wherein the scavenging speed is 5-25 mL/min, and the catalyst is obtained by roasting molecular sieve MCM-41 loaded nickel-aluminum metal oxide at 500-600 ℃;
2) and (3) carrying out constant-temperature reaction at the pyrolysis temperature for 10-90 min, immediately stopping conveying ammonia gas and a heating system after the reaction is finished, continuously introducing inert gas until the reaction temperature is reduced to room temperature, and condensing pyrolysis gas leaving a fixed bed to obtain a liquid-phase product, namely the organic nitrogen-containing compound.
2. The method for preparing organic nitrogen-containing compounds by catalytic thermal cracking of cyanobacteria as claimed in claim 1, wherein: the roasting temperature of the catalyst is 550 ℃, and the nickel-aluminum metal oxide is nickel-aluminum hydrotalcite.
3. The method for preparing organic nitrogen-containing compounds by catalytic thermal cracking of cyanobacteria as claimed in claim 1 or 2, wherein: in the step 1), the mass ratio of the catalyst to the blue algae is (0.25-10) to 1, the particle sizes of the catalyst and the blue algae powder are both 0.1-0.8 mm, and the particle sizes of the blue algae and the catalyst in each reaction are consistent.
4. The method for preparing organic nitrogen-containing compounds by catalytic thermal cracking of cyanobacteria as claimed in claim 1 or 2, wherein: the pyrolysis temperature is 400-650 ℃.
5. The method for preparing organic nitrogen-containing compounds by catalytic thermal cracking of cyanobacteria as claimed in claim 1 or 2, wherein: the inert gas is nitrogen or argon, and the content ratio of ammonia gas to the inert gas is (0.1-2) to 1.
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| CN108504377B true CN108504377B (en) | 2020-10-16 |
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| CN109232392A (en) * | 2018-11-12 | 2019-01-18 | 东南大学 | The method that herbaceous plant thermochemical study obtains nitrogen-containing heterocycle substance under ammonia atmosphere |
| CN114874800A (en) * | 2022-05-10 | 2022-08-09 | 东南大学 | Biomass-based organic liquid hydrogen storage system and method |
| CN116393166B (en) * | 2023-04-14 | 2023-11-07 | 山东理工大学 | Molecular sieve composite nickel-aluminum alloy catalyst and preparation method and application thereof |
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| CN103773589A (en) * | 2014-01-15 | 2014-05-07 | 东南大学 | Method for preparing biologic oil from blue algae in catalytic cracking mode in vacuum |
| CN103949281A (en) * | 2014-04-26 | 2014-07-30 | 东北农业大学 | Preparation method of ultrasonic-assisted pyrolysis bio-oil modified MCM-41 molecular sieve loaded NiO catalyst as well as application thereof |
| CN104099110A (en) * | 2014-06-18 | 2014-10-15 | 华中科技大学 | System for co-production of nitrogenous chemicals and nitrogen-doped coke through biomass nitrogen-enriched pyrolysis |
| CN104520271B (en) * | 2013-08-01 | 2017-03-22 | 中国科学技术大学 | Method for preparing nitrogen-containing aromatic compound through catalytic pyrolysis from organic material |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104520271B (en) * | 2013-08-01 | 2017-03-22 | 中国科学技术大学 | Method for preparing nitrogen-containing aromatic compound through catalytic pyrolysis from organic material |
| CN103773589A (en) * | 2014-01-15 | 2014-05-07 | 东南大学 | Method for preparing biologic oil from blue algae in catalytic cracking mode in vacuum |
| CN103949281A (en) * | 2014-04-26 | 2014-07-30 | 东北农业大学 | Preparation method of ultrasonic-assisted pyrolysis bio-oil modified MCM-41 molecular sieve loaded NiO catalyst as well as application thereof |
| CN104099110A (en) * | 2014-06-18 | 2014-10-15 | 华中科技大学 | System for co-production of nitrogenous chemicals and nitrogen-doped coke through biomass nitrogen-enriched pyrolysis |
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