There are two main categories of hydrogen production pathways: fossil fuel based and renewable based. Fossil fuel based pathways include steam methane reforming (SMR) and coal gasification. SMR involves reacting methane and steam over a catalyst to produce hydrogen and carbon dioxide, and accounts for over 90% of global hydrogen production. Renewable based pathways include electrolysis of water and biomass gasification. Electrolysis of water uses electricity to split water into hydrogen and oxygen through an electrochemical reaction.
Christophe BEHAR, the CEA Director of the Nuclear Energy Division reminded the energy issues (increasing world energy needs, reduction of CO2 emissions, energy dependence rate…) before explaining the ongoing technological breakthroughs of GENIV reactors with in particular the Sodium Fast Reactor ASTRID.
Design of open volumetric receiver for air &supercritical CO2 Brayton cycleM. Ahmad
High-temperature receiver designs for solar powered supercritical CO2 Brayton cycles that can produce ~50 MW of Electricity is being investigated. Advantages of a supercritical CO2 closed-loop Brayton cycle with recuperation include high efficiency (~50%) and a small footprint relative to equivalent systems employing steam Rankine power cycles. Heating for the supercritical CO2 system occurs in a high-temperature solar receiver that can produce temperatures of at least 700 °C. Depending on whether the CO2 is heated directly or indirectly, the receiver may need to withstand pressures up to 20 MPa (200 bar). Designs for direct heating of CO2 include volumetric receivers and indirect volumetric receiver.
Christophe BEHAR, the CEA Director of the Nuclear Energy Division reminded the energy issues (increasing world energy needs, reduction of CO2 emissions, energy dependence rate…) before explaining the ongoing technological breakthroughs of GENIV reactors with in particular the Sodium Fast Reactor ASTRID.
Design of open volumetric receiver for air &supercritical CO2 Brayton cycleM. Ahmad
High-temperature receiver designs for solar powered supercritical CO2 Brayton cycles that can produce ~50 MW of Electricity is being investigated. Advantages of a supercritical CO2 closed-loop Brayton cycle with recuperation include high efficiency (~50%) and a small footprint relative to equivalent systems employing steam Rankine power cycles. Heating for the supercritical CO2 system occurs in a high-temperature solar receiver that can produce temperatures of at least 700 °C. Depending on whether the CO2 is heated directly or indirectly, the receiver may need to withstand pressures up to 20 MPa (200 bar). Designs for direct heating of CO2 include volumetric receivers and indirect volumetric receiver.
Abstract A natural gas processing plant separates impurities, nonmethane hydrocarbons, and fluids to produce high-quality pipeline-quality dry natural gas, extracted from underground. Natural gas processing produces valuable byproducts like natural gas liquids (NGLs). The process involves four key steps: oil and condensate removal, water removal, separation of NGLs, and sulfur and carbon dioxide removal. The primary procedures include planning, extraction, separation, removal, and storage. Natural gas sweetening removes CO2 and H2S from natural gas. It involves an amine scrubbing procedure, ensuring H2S and CO2 concentrations are below tariff limits. offers reliable solutions for natural gas sweetening applications. Water is present in natural gas, either in liquid or vapor form. Safe gas processing requires reducing and controlling its water content. .
Natural Gas Processing
4 | P a g e
Introduction
A natural gas processing plant is a facility designed to provide clean raw natural gas by separating impurities, various nonmethane hydrocarbons and fluids to get high quality natural gas, what is known as pipeline-quality dry natural gas. (Speight, J. G.,2019)
Natural gas (or fossil gas) is hiding beneath the surface and extracted both from under the ocean and land. As shown in Figure 1. (Energy Insight, 2023)
Figure 1: Schematic geology of natural gas resources. (Energy Insight, 2023)
natural gas It typically includes heavier hydrocarbons like ethane, propane, normal butane, isobutane, etc. in addition to a significant amount of methane. Additionally, it frequently has a significant proportion of nonhydrocarbons in its raw form, including carbon dioxide, hydrogen sulfide, and nitrogen. Such substances as helium, carbonyl sulfide, and other forms of mercaptan are present in tiny quantities. In generally, it is also saturated with water. Some examples of the analysis of different types of gas are provided in Table 1.
Table 1: Typical Raw Gas Composition. (Mohammed Hamzah Msaed,2021)
Natural Gas Processing
5 | P a g e
Methodology
Natural gas processing yields associated hydrocarbons, sometimes referred to as "natural gas liquids" (NGLs), which can be extremely valuable byproducts. Natural gasoline, propane, butane, isobutane, and ethane are examples of NGLs. These (NGLs) can be purchased individually and are used for a number of purposes, such as improving oil recovery in oil wells, supplying raw materials to petrochemical or oil refineries, and serving as energy sources.
Although the actual process of processing natural gas to pipeline dry gas quality standards might be highly complicated, there are typically four key steps involved in order to eliminate the different impurities: (U.S. Department of Transportation, 2017)
• Oil and Condensate Removal
• Water Removal
• Separation of Natural Gas Liquids
• Sulfur and Carbon Dioxide Removal
While there are several procedures involved in the processing of natural gas, separation, dehydration, removal of ca
Comparison of Alternate Methods for Generating Nitrogen for Industrial Proces...Classic Controls, Inc.
Nitrogen is used extensively throughout various industries because of its properties as an inert gas. The volume of its use can make nitrogen cost a significant line item on an operation's expense report.
The article compares three methods of generating nitrogen and examines the relative costs of each.
its a short introduction of pollution due to power generation and thermal power impact and analyse of hydro power plant its equation use in producing electric energy by Seminar Report
pollution due to non conventional energy of power generation
This paper deals with a new technology by which water can be used as a fuel. Price of Petroleum oils
are increases day-by-day, affecting the lifestyle of common people as well as the national economy. Hence it is
necessary to have alternative for petroleum oil. Water can be used as a fuel in the form of Brown’s Gas, so we
have a plan to produce a Generator which works on Brown’s Gas which is obtained by the electrolysis of water. It
will be a unique type of Generator so it has huge market potential. Now–a-days every country spends a lot of
money on research and development on non-conventional energy resources. In world, the conventional energy
sources are limited and their consumption is very high, so alternative sources of energy have tremendous
potential in future. Nobody will think for a moment but it is reality that water can be used as electricity producing
agent, and hence as an energy resources. It is good news for environmentalists as It is made from water,
depending upon the set-up; it burns into combustion engine and releases oxygen into atmosphere. This method
increases the oxygen content in the atmosphere, which helps to solve environment degradation. Hence, this new
successful technology can be called as Green technology. Since Electricity is one of the important energy
resources. It is available at very limited places and consumption is much more. This causes war for electricity
which is not new for civilization but by this technology war can be overcome or may be ended soo n
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Solid oxide fuel cells (SOFC) are the most efficient devices for directly converting the chemical energy of a fuel into electrical energy. This is one of the main reasons why these fuel cells have received a lot of attention from the scientific community and from several developers who have invested in the use of this technology in various applications. Biogas is one of the products of anaerobic decomposition (absence of gaseous oxygen) of organic matter, which occurs due to the action of certain types of bacteria. Biogas is mainly composed of methane (CH4) and carbon dioxide (CO2) and its use in solid oxide fuel cells has been investigated since Biogas is a renewable biofuel. The aim of this paper was to perform mathematical modeling of a solid oxide fuel cell operating on biogas. The results confirmed that the overall efficiency of the system is above 94% and the largest irreversibilities of the system are related to heat exchangers.
Explanation of Hydrogen Technologies
Technology and procedures related to the creation, distribution, storage, and use of hydrogen as an energy source are collectively referred to as hydrogen technologies. Energy needs can be met while reducing environmental impact by utilizing hydrogen, the most plentiful element in the universe, in a variety of forms.
Presentation given by Dr Maria Chiara Ferrari from University of Edinburgh on "Capturing CO2 from air: Research at the University of Edinburgh" at the UKCCSRC Direct Air Capture/Negative Emissions Workshop held in London on 18 March 2014
A perspective on transition engineering options from capture-readiness to fullsize capture on Natural Gas Combined Cycle Plants - presentation by Mathieu Lucquiaud in the Natural Gas CCS session at the UKCCSRC Cardiff Biannual Meeting, 10-11 September 2014
Environmental Profiles for Motors and TransformersLeonardo ENERGY
Highlights:
* The principal life-cycle environmental impact of motors and transformers is climate change.
* Operational power consumption contributes most to climate change.
* Any improvement of motor efficiency will benefit the environmental profile of the equipment.
* Wise use of more metal in motor manufacture may provide scope for achieving environmental performance.
* However, using more metal to boost efficiency pays off only very slowly.
Abstract A natural gas processing plant separates impurities, nonmethane hydrocarbons, and fluids to produce high-quality pipeline-quality dry natural gas, extracted from underground. Natural gas processing produces valuable byproducts like natural gas liquids (NGLs). The process involves four key steps: oil and condensate removal, water removal, separation of NGLs, and sulfur and carbon dioxide removal. The primary procedures include planning, extraction, separation, removal, and storage. Natural gas sweetening removes CO2 and H2S from natural gas. It involves an amine scrubbing procedure, ensuring H2S and CO2 concentrations are below tariff limits. offers reliable solutions for natural gas sweetening applications. Water is present in natural gas, either in liquid or vapor form. Safe gas processing requires reducing and controlling its water content. .
Natural Gas Processing
4 | P a g e
Introduction
A natural gas processing plant is a facility designed to provide clean raw natural gas by separating impurities, various nonmethane hydrocarbons and fluids to get high quality natural gas, what is known as pipeline-quality dry natural gas. (Speight, J. G.,2019)
Natural gas (or fossil gas) is hiding beneath the surface and extracted both from under the ocean and land. As shown in Figure 1. (Energy Insight, 2023)
Figure 1: Schematic geology of natural gas resources. (Energy Insight, 2023)
natural gas It typically includes heavier hydrocarbons like ethane, propane, normal butane, isobutane, etc. in addition to a significant amount of methane. Additionally, it frequently has a significant proportion of nonhydrocarbons in its raw form, including carbon dioxide, hydrogen sulfide, and nitrogen. Such substances as helium, carbonyl sulfide, and other forms of mercaptan are present in tiny quantities. In generally, it is also saturated with water. Some examples of the analysis of different types of gas are provided in Table 1.
Table 1: Typical Raw Gas Composition. (Mohammed Hamzah Msaed,2021)
Natural Gas Processing
5 | P a g e
Methodology
Natural gas processing yields associated hydrocarbons, sometimes referred to as "natural gas liquids" (NGLs), which can be extremely valuable byproducts. Natural gasoline, propane, butane, isobutane, and ethane are examples of NGLs. These (NGLs) can be purchased individually and are used for a number of purposes, such as improving oil recovery in oil wells, supplying raw materials to petrochemical or oil refineries, and serving as energy sources.
Although the actual process of processing natural gas to pipeline dry gas quality standards might be highly complicated, there are typically four key steps involved in order to eliminate the different impurities: (U.S. Department of Transportation, 2017)
• Oil and Condensate Removal
• Water Removal
• Separation of Natural Gas Liquids
• Sulfur and Carbon Dioxide Removal
While there are several procedures involved in the processing of natural gas, separation, dehydration, removal of ca
Comparison of Alternate Methods for Generating Nitrogen for Industrial Proces...Classic Controls, Inc.
Nitrogen is used extensively throughout various industries because of its properties as an inert gas. The volume of its use can make nitrogen cost a significant line item on an operation's expense report.
The article compares three methods of generating nitrogen and examines the relative costs of each.
its a short introduction of pollution due to power generation and thermal power impact and analyse of hydro power plant its equation use in producing electric energy by Seminar Report
pollution due to non conventional energy of power generation
This paper deals with a new technology by which water can be used as a fuel. Price of Petroleum oils
are increases day-by-day, affecting the lifestyle of common people as well as the national economy. Hence it is
necessary to have alternative for petroleum oil. Water can be used as a fuel in the form of Brown’s Gas, so we
have a plan to produce a Generator which works on Brown’s Gas which is obtained by the electrolysis of water. It
will be a unique type of Generator so it has huge market potential. Now–a-days every country spends a lot of
money on research and development on non-conventional energy resources. In world, the conventional energy
sources are limited and their consumption is very high, so alternative sources of energy have tremendous
potential in future. Nobody will think for a moment but it is reality that water can be used as electricity producing
agent, and hence as an energy resources. It is good news for environmentalists as It is made from water,
depending upon the set-up; it burns into combustion engine and releases oxygen into atmosphere. This method
increases the oxygen content in the atmosphere, which helps to solve environment degradation. Hence, this new
successful technology can be called as Green technology. Since Electricity is one of the important energy
resources. It is available at very limited places and consumption is much more. This causes war for electricity
which is not new for civilization but by this technology war can be overcome or may be ended soo n
Mathematical modeling of a solid oxide fuel cell operating on biogasjournalBEEI
Solid oxide fuel cells (SOFC) are the most efficient devices for directly converting the chemical energy of a fuel into electrical energy. This is one of the main reasons why these fuel cells have received a lot of attention from the scientific community and from several developers who have invested in the use of this technology in various applications. Biogas is one of the products of anaerobic decomposition (absence of gaseous oxygen) of organic matter, which occurs due to the action of certain types of bacteria. Biogas is mainly composed of methane (CH4) and carbon dioxide (CO2) and its use in solid oxide fuel cells has been investigated since Biogas is a renewable biofuel. The aim of this paper was to perform mathematical modeling of a solid oxide fuel cell operating on biogas. The results confirmed that the overall efficiency of the system is above 94% and the largest irreversibilities of the system are related to heat exchangers.
Explanation of Hydrogen Technologies
Technology and procedures related to the creation, distribution, storage, and use of hydrogen as an energy source are collectively referred to as hydrogen technologies. Energy needs can be met while reducing environmental impact by utilizing hydrogen, the most plentiful element in the universe, in a variety of forms.
Presentation given by Dr Maria Chiara Ferrari from University of Edinburgh on "Capturing CO2 from air: Research at the University of Edinburgh" at the UKCCSRC Direct Air Capture/Negative Emissions Workshop held in London on 18 March 2014
A perspective on transition engineering options from capture-readiness to fullsize capture on Natural Gas Combined Cycle Plants - presentation by Mathieu Lucquiaud in the Natural Gas CCS session at the UKCCSRC Cardiff Biannual Meeting, 10-11 September 2014
Environmental Profiles for Motors and TransformersLeonardo ENERGY
Highlights:
* The principal life-cycle environmental impact of motors and transformers is climate change.
* Operational power consumption contributes most to climate change.
* Any improvement of motor efficiency will benefit the environmental profile of the equipment.
* Wise use of more metal in motor manufacture may provide scope for achieving environmental performance.
* However, using more metal to boost efficiency pays off only very slowly.
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Hydrogen_Production_Pathways-4.pdf
1. Hydrogen Production Pathways
Hydrogen production pathways can be broadly categorized into two groups:
Fossil fuel based production
Renewable based production
January 30, 2023 1 / 23
3. Fossil Fuel Based Hydrogen Production
Steam methane reforming (SMR)
Coal gasification
January 30, 2023 3 / 23
4. Steam Methane Reforming (SMR)
- SMR involves reacting methane (CH4) with steam (H2O) at high
temperatures (800-1000°C) and pressures (30-40 bar) in the presence
of a catalyst, usually nickel.
- The reaction produces hydrogen (H2) and carbon dioxide (CO2):
CH4 + H2O → CO2 + 3H2.
- SMR is the most widely used method for producing hydrogen,
accounting for over 90
- However, it is not considered a clean method due to the generation of
carbon dioxide as a byproduct.
January 30, 2023 4 / 23
5. Coal Gasification
- Uses coal as the feedstock, which is heated in the absence of air to
produce a mixture of hydrogen, carbon monoxide, and carbon dioxide
known as synthesis gas or syngas.
- The hydrogen can be separated from the other gases and used as a
fuel.
January 30, 2023 5 / 23
6. Renewable Based Hydrogen Production
Electrolysis of water
Biomass gasification
January 30, 2023 6 / 23
7. Electrolysis of Water
Involves splitting water into hydrogen and oxygen using electricity. The
electrolysis process can be accomplished through two methods:
Alkaline electrolysis
Proton exchange membrane (PEM) electrolysis
- In both methods, an electrical current is passed through the water,
which splits the water into hydrogen and oxygen through a chemical
reaction.
- The hydrogen produced in this process is considered to be clean and
renewable, as the only byproduct is oxygen. However, the efficiency
and cost-effectiveness of the process depend on the source of
electricity used to power the electrolysis.
January 30, 2023 7 / 23
8. Biomass Gasification
- Uses organic matter such as agricultural waste or forestry waste as
feedstock, which is heated in the absence of air to produce a mixture
of hydrogen and other gases. The hydrogen can be separated from
the other gases and used as a fuel.
- Biomass gasification is considered a clean and renewable method for
producing hydrogen, as the carbon dioxide produced during the
process is considered to be part of the carbon cycle, since the carbon
dioxide was originally taken up from the atmosphere by the organic
matter.
January 30, 2023 8 / 23
10. Steam Methane Reforming (SMR)
The main process for producing hydrogen, accounting for over 90% of
hydrogen production globally.
Involves reacting methane (CH4) with steam (H2O) in the presence
of a catalyst to produce hydrogen (H2) and carbon dioxide (CO2).
CH4 + H2O → CO2 + 3H2 (1)
January 30, 2023 10 / 23
11. Steps involved in setting up a SMR plant
Procurement of feedstock: Natural gas must be obtained and
transported to the plant site.
Pre-treatment of feedstock: Impurities such as sulfur and moisture
may need to be removed from the natural gas.
Reactor design: Reactor must be designed to withstand high
temperatures/pressures and hold catalyst.
Catalyst selection: A suitable catalyst, such as platinum or
nickel-based, must be selected for the reaction.
January 30, 2023 11 / 23
12. Continued...
Steam generation: A steam generation system must be designed and
installed to provide steam for the reaction.
Carbon dioxide removal: Remove CO2 from mixture via scrubbing,
cryogenic separation, or PSA.
Hydrogen purification: H2 must be purified from CO and N2 via PSA,
pressure filtration, or membrane separation.
Hydrogen storage and distribution: Store and distribute purified H2,
requiring designed and installed systems.
January 30, 2023 12 / 23
13. Setting up a SMR Plant
Procurement of feedstock
Pre-treatment of feedstock
Reactor design
Catalyst selection
Steam generation
CO2 removal
Hydrogen purification
Hydrogen storage and distribution
January 30, 2023 13 / 23
14. Steam Methane Reforming (SMR) Plant Operating
Parameters
Operating pressure: 500-1,000 kPa
Operating temperature: 800-1,200°C
Steam-to-carbon ratio: 2.5-3.5
Catalyst life: 5-10 years
Conversion rate: 80-85%
Purity of produced hydrogen: 95-99.999%
January 30, 2023 14 / 23
15. The Economics of a Steam Methane Reforming (SMR)
Plant
Cost of natural gas: A significant factor in determining the economics
of a SMR plant
Capital costs: Costs of building the plant, including the reactor and
other systems
Operating costs: Labor, energy and maintenance costs can affect
profitability
Carbon capture and storage (CCS): Implementing and operating the
CCS system can impact the economics of the plant
Hydrogen demand and price: Higher demand and higher prices for
hydrogen can increase the profitability of the plant
Overall, SMR is considered to be relatively inexpensive compared to other
hydrogen production pathways when natural gas prices are low
January 30, 2023 15 / 23
16. Natural Gas Pathways
SMR relies on natural gas as its main feedstock, and there are several
pathways to obtain it:
Conventional natural gas production, which involves drilling wells to
extract natural gas from underground reservoirs and is the most
common method globally.
Unconventional natural gas production, which involves extracting
natural gas from sources such as shale gas, coal bed methane, and
tight gas, and is typically more expensive and complex.
Importation of liquefied natural gas (LNG), which is natural gas that
has been cooled to a liquid state for transport by tanker, and is an
option for countries without access to domestic natural gas reserves.
January 30, 2023 16 / 23
18. Electrolysis of Water
Electrolysis of water is a process to produce hydrogen gas (H2) by
electrically splitting water molecules (H2O).
The process uses an electrical current to separate hydrogen and
oxygen atoms in water molecules.
The resulting hydrogen can be used as a fuel source or in various
industrial processes.
January 30, 2023 18 / 23
20. Components of an Electrolysis of Water Plant
Electrolyzer: The main component consisting of two electrodes and
an electrolyte membrane.
Electricity source: A necessary component that powers the
electrolyzer, either renewable or fossil fuel-powered.
Pumps: Required to circulate water through the electrolyzer.
Gas storage: The hydrogen produced must be stored until needed.
Safety equipment: Measures necessary to ensure safe plant operation,
including emergency shut-off valves, hydrogen detection systems, and
fire suppression systems.
January 30, 2023 20 / 23
21. Setting up an Electrolysis of Water Plant
Determining production capacity and selecting an appropriate
electrolyzer.
Selecting an electricity source and determining required electrical
power.
Determining necessary pumps, gas storage, and safety equipment.
Installing the electrolyzer and other components.
Connecting the plant to the electricity source and monitoring its
operation.
January 30, 2023 21 / 23
22. Cost of Setting Up an Electrolysis of Water Plant
The cost of setting up an electrolysis of water plant includes the cost
of equipment, such as the electrolyzer, pumps, gas storage, and safety
equipment.
The cost of electricity to power the electrolyzer is another significant
cost factor.
If the electricity source is a renewable energy source, such as wind or
solar, the cost of electricity is lower compared to if it is supplied by a
fossil fuel-powered generator.
The cost of hydrogen produced through electrolysis of water can be
higher compared to other hydrogen production pathways, especially if
the electricity source is not renewable.
January 30, 2023 22 / 23
23. Economic analysis
NPV =
n
X
t=1
CFt
(1 + r)t
− I0
Where:
CFt = expected cash flow at time t
r = discount rate
t = time period (t = 1, 2, ...n)
I0 = initial investment (capital expenditure)
The formula calculates the present value of each future cash flow and
subtracts the initial investment to give the total NPV
January 30, 2023 23 / 23