CN113353886A - Method for preparing biological hydrogen and biological ammonia - Google Patents
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- CN113353886A CN113353886A CN202110533146.2A CN202110533146A CN113353886A CN 113353886 A CN113353886 A CN 113353886A CN 202110533146 A CN202110533146 A CN 202110533146A CN 113353886 A CN113353886 A CN 113353886A
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the catalyst
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/06—Integration with other chemical processes
- C01B2203/068—Ammonia synthesis
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1258—Pre-treatment of the feed
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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
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- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
The invention discloses a method for preparing biological hydrogen and biological ammonia, which comprises the following steps: producing methylated biomass slurry by performing gas explosion crushing and methylation boiling hydrolysis on a lignocellulose biomass raw material; production of bio-H using methylated biomass slurry2Biological H2And N2Producing biological ammonia. The method takes the biomass raw material as the raw material for synthesizing ammonia, has the characteristics of cheap and easily obtained raw materials, simple process, environmental protection, energy conservation, high conversion rate, high product purity and the like, and is suitable for industrial production.
Description
Technical Field
The invention belongs to the field of synthetic ammonia, and particularly relates to a preparation method of biological hydrogen and biological ammonia.
Background
Ammonia is a compound of nitrogen and hydrogen, is of considerable importance, is an important component of many foods and fertilizers, is well known as a basic raw material for chemicals, textiles, explosives, refrigerants and fertilizers, and is one of the most productive inorganic compounds in the world. The synthetic ammonia industry was developed in the early 20 th century, ammonia was used as a raw material in the explosive industry for war service, and after world war for the first time, ammonia was turned to agricultural and industrial service. With the development of scientific technology, the demand of ammonia is increasing; the ammonia can also be used as a general carbon-free fuel to replace fossil fuels such as diesel oil, aviation kerosene and natural gas.
The raw materials for synthesizing ammonia are hydrogen and nitrogen, and the key point is hydrogen. Hydrogen is widely distributed in nature, and petroleum, natural gas, coal, biomass, water and the like all contain hydrogen. The main industrial starting materials for hydrogen gas are stone-based materials such as natural gas, petroleum and coal, which are also the main starting materials for ammonia synthesis. The Chinese energy structure has the characteristics of more coal, oil shortage and less gas, and the coal is the main starting material of synthetic ammonia at present. Although the industry of ammonia synthesis has a long history, mature synthesis technology and wide application, few reports are made on the types of starting materials, and only the research on stone-based raw materials such as natural gas, petroleum, coal and the like, such as biomass as the starting material is not reported.
In recent years, as research and application of new energy automobiles using hydrogen fuel cells as power are greatly developed, hydrogen is regarded as fuel, and new technologies such as large-scale hydrogen production by water electrolysis, plasma bombardment of biomass and the like begin to appear, but non-fossil hydrogen is not produced on a large scale due to various reasons, and the new technologies cannot be popularized and popularized due to factors such as high cost, low cost performance and the like, and are not used in the field of ammonia synthesis.
The ammonia can be combusted in an internal combustion engine, a gas turbine, a turbine engine and the like to replace fossil fuels such as diesel oil, aviation kerosene, natural gas and the like, is a carbon-free fuel commonly used on land, sea and air, and is an expression form of hydrogen energy.
The production of hydrogen from biomass and the synthesis of ammonia are the future direction of the development of the field of ammonia synthesis. The biomass mainly refers to lignocellulose such as urban landscaping residues, agricultural and forestry wastes, resource crops and the like, is the most extensive resource in the nature and the strongest renewable capability, has the global yield of over 1000 hundred million tons/year and over the current oil storage capacity, and can be lost as wastes by people when the yield in China reaches 100 million tons/year. The biological hydrogen is hydrogen produced by using lignocellulose biomass as a raw material, adopting the processes of revolutionary gas explosion crushing, gasification and the like to produce biological synthesis gas, and then carrying out the processes of transformation, separation and the like on the biological synthesis gas. The biological ammonia is ammonia synthesized by using biological hydrogen as a raw material. The development of the method for synthesizing ammonia by using lignocellulose biomass as a starting material is very consistent with the national conditions of China based on coal reduction strategy, carbon neutralization strategy and the like.
Disclosure of Invention
The invention aims to provide a preparation method of biological hydrogen and biological ammonia, which takes a biomass raw material as a raw material for synthesizing ammonia, has the characteristics of cheap and easily-obtained raw materials, simple process, environmental protection, energy conservation, high conversion rate, high product purity and the like, and is suitable for industrial production.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for producing biological hydrogen and biological ammonia, comprising:
producing methylated biomass slurry by performing gas explosion crushing and methylation boiling hydrolysis on a lignocellulose biomass raw material;
production of bio-H using methylated biomass slurry2Biological H2And N2Producing biological ammonia.
Further, the gas explosion crushing comprises: placing the lignocellulose biomass raw material subjected to mechanical crushing into a tubular gas explosion reactor, introducing superheated steam, wherein the temperature of the superheated steam is 240-280 ℃, the pressure is 2.4-3.1 MPa, and the time is 0.5-5 minutes, opening a valve of the tubular gas explosion reactor, and exploding the material into a methylation boiling hydrolysis reactor; methylation boiling hydrolysis comprises: the temperature is 160-220 ℃, the pressure is 1.4-1.6 MPa, the time is 5-30 minutes, the methylation boiling hydrolysis reaction converts hemicellulose in the biomass raw material into methylated xylooligosaccharide, cellulose into methylated fiber oligosaccharide, and lignin is converted into methylated oligomeric lignin, so that methylated biomass slurry is prepared.
Further, the water content of the methylated biomass slurry is more than 30%.
Further, the methylated biomass slurry comprises: 5-36 wt% of methylated xylooligosaccharide, 15-65 wt% of methylated cellooligosaccharide, 10-55 wt% of methylated oligomeric lignin and 15-60 wt% of water, wherein the compaction density of the methylated biomass slurry is controlled to be 1.2-1.6 g/cm3The heat value ranges from 20.50 to 33.10 MJ/kg.
Further, a pressurized entrained-flow bed gasification furnace device is adopted, methylated biomass slurry is pumped into a gasification furnace, and the solid content of the methylated biomass slurry is 60-65 wt%; then gasifying agent O2The mixture is sent into a gasification furnace device through a nozzle to start gasification, and the gasification temperature is 1200-135 DEG CAt 0 ℃ and under a pressure of 1.2-2.5 MPa, to obtain a catalyst mainly containing H2CO and CO2The ratio of the biological synthesis gas is 32-36% of H238-41 wt% of CO, 10-12 wt% of CO2(ii) a Adjusting H by adopting steam conversion process for biological synthesis gas2The ratio of the CO to the biological H is 7-10: 1, and the transformed biological synthesis gas is subjected to a pressure swing adsorption separation device to prepare biological H2And by-product biological CO.
Further, a living organism H2And purified air separation N2The biological ammonia is synthesized by the ammonia synthesis process through a medium pressure method, the pressure is controlled to be 25-35 MPa, the reaction temperature is 450-550 ℃, and the catalyst is an iron catalyst.
Further, a living organism H2And N2The molar ratio of (A) to (B) is 3-4: 2.
The invention has the technical effects that:
the method utilizes lignocellulose biomass such as agricultural and forestry waste and the like as raw materials to serve as the starting raw material for synthesizing ammonia, belongs to biomass raw materials, has the characteristics of cheap and easily-obtained raw materials, simple process, environmental protection, high conversion rate, high product purity, low cost and the like, and is suitable for industrial production. The biological ammonia can directly replace the fossil-based ammonia, is used in the fields of chemicals, textiles, explosives, refrigerants, chemical fertilizers and the like, and can also be used as a general carbon-free fuel to replace fossil fuels such as diesel oil, aviation kerosene, natural gas and the like.
(1) The raw material is lignocellulose biomass (urban landscaping residues, agricultural and forestry wastes, resource crops and the like), is cheap and easily available and renewable, is mostly a waste resource, and belongs to waste utilization.
(2) And converting hemicellulose, cellulose and lignin into methylated xylo-oligosaccharide, methylated cello-oligosaccharide and methyl oligomeric lignin respectively by adopting a gas explosion crushing-methylation boiling hydrolysis process to prepare methylated biomass, so that the full component utilization of lignocellulose biomass resources is realized.
(3) The pressurized entrained flow bed gasification process is used for producing the biological hydrogen from the methylated biomass slurry, the investment is low, the efficiency is high, the process has the characteristics of pure gas, no sulfur, simple and stable gasification process and the like, and the comprehensive cost-efficiency ratio is superior to that of non-biological hydrogen such as fossil-based hydrogen, hydrogen production by water electrolysis and the like.
(4) The biological hydrogen is used as raw material biological ammonia, has the characteristics of cheap and easily available and renewable raw materials, simple and direct process, reliable product performance and the like, and is suitable for rapid arrangement industrial production.
Detailed Description
The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce it.
The invention takes lignocellulose biomass as raw materials (urban landscaping residues, agricultural and forestry wastes, resource crops and the like), methylated biomass slurry is obtained after gas explosion crushing and methylation boiling hydrolysis, the slurry is gasified to produce bio-based synthesis gas, the bio-based synthesis gas is separated and purified to produce bio-hydrogen, and then the bio-hydrogen and air separation nitrogen are used for synthesizing bio-ammonia.
The preparation method of the biological hydrogen and the biological ammonia comprises the following specific steps:
step 1: producing methylated biomass slurry by performing gas explosion crushing and methylation boiling hydrolysis on a lignocellulose biomass raw material;
gas explosion and crushing: and (3) putting the lignocellulose biomass raw material subjected to mechanical crushing into a tubular gas explosion reactor, introducing superheated steam at the temperature of 240-280 ℃, the pressure of 2.4-3.1 MPa and the time of 0.5-5 minutes, opening a valve, and exploding the material into a methylation boiling hydrolysis reactor.
Methylation boiling hydrolysis: the temperature is 160-220 ℃, the pressure is 1.4-1.6 MPa, and the time is 5-30 minutes, the reaction converts hemicellulose in the wood fiber biomass raw material into methylated xylo-oligosaccharide, the cellulose into methylated fiber oligosaccharide, and the lignin is converted into methylated oligomeric lignin to prepare methylated biomass. Methylated biomass includes: 5-36 wt% of methylated xylooligosaccharide, 15-65 wt% of methylated cellooligosaccharide, 10-55 wt% of methylated oligomeric lignin and 15-60 wt% of water, wherein the compaction density of methylated biomass is controlled to be 1.2-1.6 g/cm3The heat value ranges from 20.50 to 33.10 MJ/kg. Methylated biomass with a water content of greater than 30% is referred to as methylated biomass slurry。
Step 2: production of bio-H using methylated biomass slurry2；
A pressurized entrained-flow bed gasification furnace device is adopted, methylated biomass slurry (solid content is 60-65 wt%) is pumped into a gasification furnace, and then a gasification agent O is pumped into the gasification furnace2The mixture is sent into a gasification furnace device through a nozzle to start gasification, the gasification temperature is 1200-1350 ℃, the pressure is 1.2-2.5 MPa, and the product mainly containing H is prepared2CO and CO2The ratio of the biological synthesis gas is 32-36% of H238-41 wt% of CO, 10-12 wt% of CO2。
Adjusting H by adopting steam conversion process for biological synthesis gas2The ratio of the CO to the H-containing gas is 7-10: 1, and the transformed biological synthesis gas is subjected to Pressure Swing Adsorption (PSA) separation to obtain biological H2And by-product biological CO.
And step 3: biological H2And N2(the molar ratio is 3-4: 2) to produce biological ammonia.
Biological H2And purified air separation N2(N separated from air)2) The biological ammonia is synthesized by the ammonia synthesis process through a medium pressure method, the pressure is controlled to be 25-35 MPa, the reaction temperature is 450-550 ℃, and the catalyst is an iron catalyst.
Example 1
(1) 200kg of corn straws (with the water content of 25 wt%) are crushed to be less than 1cm, the crushed materials are sent into a gas explosion crushing-methylation boiling hydrolysis reactor, superheated steam is introduced for gas explosion crushing, the temperature is 245-250 ℃, the pressure is 2.4-2.5 MPa, the time is 0.5 minute, the materials are blasted and crushed into nano-micron particles, the nano-micron particles are sent into a methylation boiling hydrolysis device, the temperature is 180-190 ℃, the pressure is 1.4-1.5 MPa, and the time is 10-15 minutes, the reaction converts hemicellulose in the straws into methylated xylo-oligosaccharides, the cellulose is converted into methylated cellulose, the lignin is converted into methylated lignin, and the methylated biomass slurry containing 35-40% of water is generated.
(2) 130.2kg of methylated biomass slurry is fed by adopting a pressurized entrained-flow bed gasification furnace device, the content of lignin semicoke in the slurry is 61-63 wt%, and the gasification agent is O2After being pressurizedThe slurry and high-pressure oxygen are sent into a gasification furnace device through a nozzle, the gasification temperature is 1250-1280 ℃, the pressure is 1.2-1.3 MPa, and the slurry mainly containing H is prepared2CO and CO2The proportion of the biological synthesis gas is 32-36 wt% of H238-41 wt% of CO, 10-12 wt% of CO2. Adjusting H of the biological synthesis gas by a steam shift reaction device2The ratio of the CO and the biological H is 7:1, and the transformed biological synthesis gas is prepared into biological H through a Pressure Swing Adsorption (PSA) separation device2And by-product biological CO.
(3) H, organism2And space division N2The biological ammonia is synthesized by the ammonia synthesis process through a medium pressure method, the pressure is 25-27 MPa, the reaction temperature is 450-470 ℃, and the catalyst is an iron catalyst.
Example 2
(1) 200kg of tree prunes (with the water content of 20 wt%) are crushed to be less than 1cm, the tree prunes are sent into a gas explosion crushing-methylation boiling hydrolysis reactor, superheated steam is introduced for gas explosion crushing at the temperature of 240-245 ℃ and the pressure of 2.5-2.6 MPa for 1 minute, the materials are exploded and crushed into nano-micron particles, the nano-micron particles are sent into a methylation boiling hydrolysis device at the temperature of 190-200 ℃ and the pressure of 1.5-1.6 MPa for 20-25 minutes, the reaction converts hemicellulose in the tree prunes into methylated xylo-oligosaccharides, the cellulose is converted into methylated cellulose oligosaccharides, and the lignin is converted into methylated lignin to generate methylated biomass slurry containing 37-40 wt% of water.
(2) Feeding 132.1kg of methylated biomass slurry by adopting a pressurized entrained-flow bed gasification furnace device, wherein the content of lignin semicoke in the slurry is 60-62 wt%, and the gasification agent is O2The pressurized slurry and high-pressure oxygen are sent into a gasification furnace device through a nozzle, the gasification temperature is 1270-1290 ℃, the pressure is 1.5-1.6 MPa, and the slurry mainly containing H is prepared2CO and CO2The biological synthesis gas of (1) is 32-36 wt% of H238-41 wt% of CO, 10-12 wt% of CO2. Adjusting H of the biological synthesis gas by a steam shift reaction device2The ratio of the CO and the biological synthesis gas is 8:1, and the biological H is prepared from the transformed biological synthesis gas through a Pressure Swing Adsorption (PSA) separation device2And by-product biological CO.
(3) H, organism2And space division N2The biological ammonia is synthesized by the ammonia synthesis process through a medium pressure method, the pressure is 26-28 MPa, the reaction temperature is 480-500 ℃, and the catalyst is an iron catalyst.
Example 3
(1) 200kg of landscaping waste branches (with the water content of 25 wt%) are crushed to be less than 1cm, the crushed branches are sent to a gas explosion crushing-methylation boiling hydrolysis reactor, superheated steam is introduced for gas explosion crushing at the temperature of 260-270 ℃ and the pressure of 2.7-2.8 MPa for 2 minutes, the materials are blasted and crushed into nano-micron-sized particles and then sent to a methylation boiling hydrolysis device at the temperature of 160-170 ℃ and the pressure of 1.4-1.5 MPa for 15-20 minutes, hemicellulose in the landscaping waste branches is converted into methylated xylo-oligosaccharides through reaction, cellulose is converted into methylated cello-oligosaccharides, and lignin is converted into methylated lignin to generate methylated biomass slurry containing 35-37 wt% of water.
(2) Feeding 132.1kg of methylated biomass slurry by adopting a pressurized entrained-flow bed gasification furnace device, wherein the content of lignin semicoke in the slurry is 62-64 wt%, and the gasification agent is O2The pressurized slurry and high-pressure oxygen are sent into a gasification furnace device through a nozzle, the gasification temperature is 1280-1300 ℃, the pressure is 1.7-1.8 MPa, and the slurry mainly containing H is prepared2CO and CO2The biological synthesis gas comprises 32-36 wt% of H2, 38-41 wt% of CO and 10-12 wt% of CO2. Adjusting H of the biological synthesis gas by a steam shift reaction device2The ratio of the CO and the biological H is 9:1, and the transformed biological synthesis gas is prepared into biological H through a Pressure Swing Adsorption (PSA) separation device2And by-product biological CO.
(3) H, organism2And space division N2The biological ammonia is synthesized by the ammonia synthesis process through a medium pressure method, the pressure is 30-32 MPa, the reaction temperature is 470-490 ℃, and the catalyst is an iron catalyst.
Example 4
(1) 200kg of moso bamboo (with the water content of 23 wt%) is crushed to be less than 1cm, the moso bamboo is sent into a gas explosion crushing-methylation boiling hydrolysis reactor, superheated steam is introduced for gas explosion crushing at the temperature of 260-270 ℃ and the pressure of 3.0-3.1 MPa for 2.5 minutes, the materials are blasted and crushed into nano-micron-sized particles and then sent into a methylation boiling hydrolysis device at the temperature of 200-210 ℃ and the pressure of 1.5-1.6 MPa for 20-25 minutes, reaction is carried out to convert hemicellulose in the moso bamboo into methylated xylo-oligosaccharide, cellulose is converted into methylated fiber oligosaccharide, lignin is converted into methylated lignin, and methylated biomass slurry containing 35-37% of water is generated.
(2) 130.8kg of methylated biomass slurry is fed by adopting a pressurized entrained-flow bed gasification furnace device, the content of lignin semicoke in the slurry is 62-64 wt%, and the gasification agent is O2The pressurized slurry and high-pressure oxygen are sent into a gasification furnace device through a nozzle, the gasification temperature is 1300-1320 ℃, the pressure is 1.2-1.3 MPa, and the slurry mainly containing H is prepared2CO and CO2The biological synthesis gas of (1) is 32-36 wt% of H238-41 wt% of CO, 10-12 wt% of CO2. Adjusting H of the biological synthesis gas by a steam shift reaction device2The ratio of the CO and the biological H is 10:1, and the transformed biological synthesis gas is prepared into biological H through a Pressure Swing Adsorption (PSA) separation device2And by-product biological CO.
(3) H, organism2And space division N2The biological ammonia is synthesized by the ammonia synthesis process through a medium pressure method, the pressure is 32-34 MPa, the reaction temperature is 460-480 ℃, and the catalyst is an iron catalyst.
The terminology used herein is for the purpose of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (7)
1. A method for producing biohydrogen and bioammonia, comprising:
producing methylated biomass slurry by performing gas explosion crushing and methylation boiling hydrolysis on a lignocellulose biomass raw material;
by methyl groupsProduction of biological H from biomass slurry2Biological H2And N2Producing biological ammonia.
2. The method of claim 1, wherein the gas explosion comminution comprises: placing the lignocellulose biomass raw material subjected to mechanical crushing into a tubular gas explosion reactor, introducing superheated steam, wherein the temperature of the superheated steam is 240-280 ℃, the pressure is 2.4-3.1 MPa, and the time is 0.5-5 minutes, opening a valve of the tubular gas explosion reactor, and exploding the material into a methylation boiling hydrolysis reactor; methylation boiling hydrolysis comprises: the temperature is 160-220 ℃, the pressure is 1.4-1.6 MPa, the time is 5-30 minutes, the methylation boiling hydrolysis reaction converts hemicellulose in the biomass raw material into methylated xylooligosaccharide, cellulose into methylated fiber oligosaccharide, and lignin is converted into methylated oligomeric lignin, so that methylated biomass slurry is prepared.
3. The method of claim 2, wherein the methylated biomass slurry has a water content of greater than 30%.
4. The method of claim 2, wherein methylating the biomass slurry comprises: 5-36 wt% of methylated xylooligosaccharide, 15-65 wt% of methylated cellooligosaccharide, 10-55 wt% of methylated oligomeric lignin and 15-60 wt% of water, wherein the compaction density of the methylated biomass slurry is controlled to be 1.2-1.6 g/cm3The heat value ranges from 20.50 to 33.10 MJ/kg.
5. The method of claim 1, wherein the pressurized entrained-flow gasifier is used to pump the methylated biomass slurry into the gasifier, wherein the methylated biomass slurry has a solid content of 60-65 wt%; then gasifying agent O2The mixture is sent into a gasification furnace device through a nozzle to start gasification, the gasification temperature is 1200-1350 ℃, the pressure is 1.2-2.5 MPa, and the product mainly containing H is prepared2CO and CO2Is a biological combination ofH with the ratio of the formed gas to the biological synthesis gas of 32-36%238-41 wt% of CO, 10-12 wt% of CO2(ii) a Adjusting H by adopting steam conversion process for biological synthesis gas2The ratio of the CO to the biological H is 7-10: 1, and the transformed biological synthesis gas is subjected to a pressure swing adsorption separation device to prepare biological H2And by-product biological CO.
6. The method of claim 1, wherein the biological H is selected from the group consisting of2And purified air separation N2The biological ammonia is synthesized by the ammonia synthesis process through a medium pressure method, the pressure is controlled to be 25-35 MPa, the reaction temperature is 450-550 ℃, and the catalyst is an iron catalyst.
7. The method of claim 6, wherein the biological H is selected from the group consisting of2And N2The molar ratio of (A) to (B) is 3-4: 2.
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| US11760630B2 (en) | 2021-04-15 | 2023-09-19 | Iogen Corporation | Process and system for producing low carbon intensity renewable hydrogen |
| US11807530B2 (en) | 2022-04-11 | 2023-11-07 | Iogen Corporation | Method for making low carbon intensity hydrogen |
| US11946001B2 (en) | 2021-04-22 | 2024-04-02 | Iogen Corporation | Process and system for producing fuel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11760630B2 (en) | 2021-04-15 | 2023-09-19 | Iogen Corporation | Process and system for producing low carbon intensity renewable hydrogen |
| US11946001B2 (en) | 2021-04-22 | 2024-04-02 | Iogen Corporation | Process and system for producing fuel |
| US11807530B2 (en) | 2022-04-11 | 2023-11-07 | Iogen Corporation | Method for making low carbon intensity hydrogen |
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