SYNGAS PRODUCTION BY DRY REFORMING OF METHANE OVER CO-PRECIPITATED CATALYSTSIAEME Publication
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The syngas manufacturing from the reforming of methane with carbon dioxide is tempting because of output in terms of extra pure synthesis gas and lower H2 to CO ratio than other synthesis gas production methods like either partial oxidation or steam reforming. For production of long-chain hydrocarbons though the Fischer-Tropsch synthesis, lower H2 to CO ratio is required and important, as it is a most likely feedstock. In recent decades, CO2 utilization has become more and more important in view of the emergent global warming phenomenon. On the environmental point of view, methane reforming is tantalizing due to the reduction of carbon dioxide and methane emissions as both are consider as dangerous greenhouse gases. Commercially, as cost effectively, nickel is used for methane reforming reactions due to its availability and lower cost compared to noble metals. Number of catalysts endures rigorous deactivation because of carbon deposition. Mainly carbon formation is because of methane decomposition and CO disproportionate. It is important and required to recognize essential steps of activation and conversion of CH4 and CO2 to design catalysts that minimize deactivation. Effect of promoters on activity and stability were studied in the detail. In order to develop the highly active with minimum coke formation the alkali metal oxides and ceria/zirconia/magnesia promoters were incorporated in the catalysts. The influence of ZrO2, CeO2 and MgO, in the performance of Ni-Al2O3 catalyst, prepare by co-precipitation method was studied in detailed. The XRD, FTIR, and BET and reactivity test for different promoted and unprompted catalyst was carried out.
Presented in Chinese, but basically about a design project. My subject is "Wintersweet and Snow", from an idea from Chinese ancient poem"梅须逊雪三分白,雪却输梅一段香" to design to factory production - the whole process, involves all we learn during undergrad period. (PS, CAD,Coreldraw...)
High level introduction
Mainstream syngas = steam reforming processes
Ammonia; methanol; hydrogen/HyCO
Town gas
Steam reforming; low pressure cyclic
Direct reduction iron (DRI)
HYL type processes; Midrex type processes
- More than 65% of deaths in people with diabetes are caused by cardiovascular disease such as heart attacks, which often occur at an earlier age and result in premature death.
- Nearly all adults with diabetes have abnormal cholesterol levels and up to 60% have high blood pressure, significantly increasing their risk of heart disease and stroke.
- People with diabetes are at least twice as likely to have heart disease or a stroke compared to those without diabetes. They also tend to develop cardiovascular problems at a younger age.
Spark is a general purpose computational framework that provides more flexibility than MapReduce. It leverages distributed memory and uses directed acyclic graphs for data parallel computations while retaining MapReduce properties like scalability, fault tolerance, and data locality. Cloudera has embraced Spark and is working to integrate it into their Hadoop ecosystem through projects like Hive on Spark and optimizations in Spark Core, MLlib, and Spark Streaming. Cloudera positions Spark as the future general purpose framework for Hadoop, while other specialized frameworks may still be needed for tasks like SQL, search, and graphs.
The document discusses the Whole Sale Price Index (WPI) and Consumer Price Index (CPI). The WPI measures price changes in the primary and wholesale markets, while the CPI measures the overall cost of goods and services bought by a typical consumer. The CPI is used to monitor changes in the cost of living over time. It measures price changes of a fixed basket of goods and services of constant quality and quantity to determine inflation rates.
This document summarizes the roles of servers in a Hadoop cluster, including manager, name nodes, edge nodes, and data nodes. It discusses hardware considerations for Hadoop cluster design like CPU to memory to disk ratios for different use cases. It also provides an overview of Dell's Hadoop solutions that integrate PowerEdge servers, Dell Networking switches, and support from Etu for analytic software and Dell Professional Services for implementation. It briefly discusses futures around in-memory processing and virtualized Hadoop deployments.
This document summarizes the theory and operation of methanol synthesis. It describes the typical methanol synthesis flowsheet that involves natural gas processing, reforming, and methanol production and purification steps. It also discusses the methanol synthesis reactions, catalysts used including their properties and deactivation mechanisms. Key factors that affect the equilibrium and kinetics of the synthesis reactions like temperature, pressure and catalyst activity are described. Methods to maximize the reaction rate within operational constraints are covered.
GAME ON! Integrating Games and Simulations in the Classroom Brian Housand
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Brian Housand, Ph.D.
brianhousand.com
@brianhousand
GAME ON! Integrating Games and Simulations in the Classroom
It is estimated that by the time that today’s youth enters adulthood that they will have played an average of 10,000 hours of video games. By playing games, research suggests that they have developed abilities related to creativity, collaboration, and critical thinking. Come explore the history of games and simulations in the classroom and investigate ways that current games and simulations in digital and non-digital formats can be meaningfully and purposefully integrated into your learning environment.
High level introduction
Mainstream syngas = steam reforming processes
Ammonia; methanol; hydrogen/HyCO
Town gas
Steam reforming; low pressure cyclic
Direct reduction iron (DRI)
HYL type processes; Midrex type processes
- More than 65% of deaths in people with diabetes are caused by cardiovascular disease such as heart attacks, which often occur at an earlier age and result in premature death.
- Nearly all adults with diabetes have abnormal cholesterol levels and up to 60% have high blood pressure, significantly increasing their risk of heart disease and stroke.
- People with diabetes are at least twice as likely to have heart disease or a stroke compared to those without diabetes. They also tend to develop cardiovascular problems at a younger age.
Spark is a general purpose computational framework that provides more flexibility than MapReduce. It leverages distributed memory and uses directed acyclic graphs for data parallel computations while retaining MapReduce properties like scalability, fault tolerance, and data locality. Cloudera has embraced Spark and is working to integrate it into their Hadoop ecosystem through projects like Hive on Spark and optimizations in Spark Core, MLlib, and Spark Streaming. Cloudera positions Spark as the future general purpose framework for Hadoop, while other specialized frameworks may still be needed for tasks like SQL, search, and graphs.
The document discusses the Whole Sale Price Index (WPI) and Consumer Price Index (CPI). The WPI measures price changes in the primary and wholesale markets, while the CPI measures the overall cost of goods and services bought by a typical consumer. The CPI is used to monitor changes in the cost of living over time. It measures price changes of a fixed basket of goods and services of constant quality and quantity to determine inflation rates.
This document summarizes the roles of servers in a Hadoop cluster, including manager, name nodes, edge nodes, and data nodes. It discusses hardware considerations for Hadoop cluster design like CPU to memory to disk ratios for different use cases. It also provides an overview of Dell's Hadoop solutions that integrate PowerEdge servers, Dell Networking switches, and support from Etu for analytic software and Dell Professional Services for implementation. It briefly discusses futures around in-memory processing and virtualized Hadoop deployments.
This document summarizes the theory and operation of methanol synthesis. It describes the typical methanol synthesis flowsheet that involves natural gas processing, reforming, and methanol production and purification steps. It also discusses the methanol synthesis reactions, catalysts used including their properties and deactivation mechanisms. Key factors that affect the equilibrium and kinetics of the synthesis reactions like temperature, pressure and catalyst activity are described. Methods to maximize the reaction rate within operational constraints are covered.
GAME ON! Integrating Games and Simulations in the Classroom Brian Housand
?
Brian Housand, Ph.D.
brianhousand.com
@brianhousand
GAME ON! Integrating Games and Simulations in the Classroom
It is estimated that by the time that today’s youth enters adulthood that they will have played an average of 10,000 hours of video games. By playing games, research suggests that they have developed abilities related to creativity, collaboration, and critical thinking. Come explore the history of games and simulations in the classroom and investigate ways that current games and simulations in digital and non-digital formats can be meaningfully and purposefully integrated into your learning environment.
43. Appendix – 各種失業率的差異
Measure Explanation
U1
Persons unemployed 15 weeks or longer, as a percent of the civilian
labor force
U2
Job losers and persons who completed temporary jobs, as a percent
of the civilian labor force
U3
Total unemployed, as a percent of the civilian labor force (official
unemployment rate)
U4
Total unemployed plus discouraged workers, as a percent of the
civilian labor force plus discouraged workers
U5
Total unemployed, plus discouraged workers, plus all other persons
marginally attached to the labor force, as a percent of the civilian
labor force plus all persons marginally attached to the labor force
U6
Total unemployed, plus all persons marginally attached to the labor
force, plus total employed part time for economic reasons, as a
percent of the civilian labor force plus all persons marginally attached
to the labor force