1 edition of In-process control of nitrogen and sulfur in entrained-bed gasifiers found in the catalog.
In-process control of nitrogen and sulfur in entrained-bed gasifiers
by U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory in Research Triangle Park, NC
Written in English
|Other titles||In process control of nitrogen and sulfur in entrained-bed gasifers|
|Statement||E.F. Aul, Jr. ... [et al.]|
|Contributions||Aul, Edward F, Air and Energy Engineering Research Laboratory|
|The Physical Object|
|Pagination||3 p. ;|
21 Coal Product Chemical Analysis % Dry Basis Component % Ash 14 Pyritic sulfur Organic sulfur Sulfate sulfur nil Heating va Btu/lb. Cost of Fuel Produced (Utilities Financing Method) Input Parameters Debt Equity Ratio 75%/25% Per dent interest on debt % Per cent return on equity 15% Federal Income Tax Rate 48% Total. Physicochemical properties and gasification reactivity of the ultrafine semi-char derived from a bench-scale fluidized bed gasifier. NASA Astrophysics Data System (ADS) Zhang, Yuk.
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These are, however, extremely sensitive to sulfur and require that the total sulfur content in synthesis gas be less than 1 ppm. The ICI low pressure process, first operated in a pilot plant in 3. ICI low pressure process , plays a dominant role. Today, about 65% of the world ( bar, C). Categories. Baby & children Computers & electronics Entertainment & hobby.
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Get this from a library. In-process control of nitrogen and sulfur in entrained-bed gasifiers. [Edward F Aul; Air and Energy Engineering Research Laboratory.;].
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CONTENTS (continued) Page Sulfur Control Module 92 Hydrocarbon Control Module Nitrogen Oxides Control Module Discharge Stream Summary WATER POLLUTION CONTROL Water Pollution Control Modules Process Comparisons Water Pollution Control Philosophy.
Gasifiers are categorized according to this parameter as fixed-bed, fluidized bed, entrained bed, or molten media. These are depicted in Figure The typical fixed-bed reactor *Data collection on this industry was completed in Coal gasifiers wer e also built in the late ’s usin g entrained (Texaco and Dow) and fluidized bed gasifiers (U- GAS ®) primarily in oil refineries and chemical plants.
Fixed-bed processes are commercially used for the combustion and conversion of coal for generation of power or production of gaseous or liquid by: The gasification process involves partial oxidation of a feed material where the exothermic energy results in the autothermal breakdown of the feed to the smallest stable chemical units that can still carry final mixture of gaseous products is labeled synthesis gas or syngas.
The gasification of coal has been practiced since the late 19th century when coal-to-gas plants were common Author: Joel Parraga, Kaveh Rajab Khalilpour, Anthony Vassallo. support during the whole process. The work together, with his dedication on this endeavor, was an impressive experience, during the whole process, and in the finalization of the book - "Gasification for Practical Applications." Yongseung Yun Institute for Advanced.
Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. These reduced forms of sulfur and nitrogen are easily iso- lated, captured, and utilized, and thus gasiﬁcation is a clean coal technology with better environmental performance than coal combustion.
Full text of "Synthetic nitrogen products: a practical guide to the products and processes" See other formats.
This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Share & Embed. Embed Script. Size (px). The newer entrained-bed gasifiers, while being considerably more efficient, produce a gas that has a higher syngas content of H2 and CO, but a lower H2 to CO ratio.
Oxygen for the gasification is. Energy and Biomass Engineering. download Report. Comments. Transcription. Energy and Biomass Engineering. Comyns, Alan E. “Dictionary.” Encyclopedic Dictionary of Named Processes in Chemical Technology Ed.
Alan Boca Raton: CRC Press LLC, A Aachen See DR. A-B [Adsorptions-Belebsungsverfahren, German, meaning Adsorption-Activation process] A two-stage *Activated Sludge process for treating sewage and industrial wastes.
The carbon is impregnated with sulfur at a concentration of about wt%. The mercury reacts with sulfur as the gas goes through the sulfur bed to form HgS.
After the sulfur on the carbon is exhausted, the spent adsorbent is shipped to a hazardous chemicals disposal site. HgS is a very stable compound and its long-term storage presents no.
Syngas from Waste presents the most recent concepts, methods and techniques for the preliminary design of a promising emerging technology: production of clean syngas from waste materials. An in-depth account is given of the steps necessary to achieve the optimum design and up-to-date tools are presented to support the designer’s decision-making tasks: modelling, simulation and optimization.
The book also contains contributions from all areas of non-nuclear and non-traditional energy sources, including renewable energy sources such as solar, wind, and biomass.
Papers from the following symposia are presented in the book: Energy Technologies and Carbon Dioxide Management Recycling and Sustainability Update. Summary of comparison between various type of gasifiers (continued) Criteria Fixed bed updraft gasifier Fixed bed downdraft gasifier Fluidized bed gasifier Entrained bed gasifier Limitation - Consists high level of tar: 10 to 20% by weight in product syngas - Extensive gas clean- up required to remove impurities - Poor reaction capability with.
5. change of speed throttling at the discharge throttling at the suction Guide Vane control by pass control Figure shows a typical range of control and the effect of some of the above variables.
Figure Typical Performance Map of Centrifugal Compressors Speed changes the head of the compressor without much change in capacity.5/5(2).Nonetheless, it is necessary to consider the fate of sulfur and nitrogen because of the effect of the resulting compounds downstream of the gas production, e.g.
environmental emissions, gas treating, catalyst poisons and so on. Details concerning the formation of sulfur and nitrogen compounds are included in section Combustion and Gasification in Fluidized Beds The burning of the char in the lower section of the bed provides the heat required for endothermic gasification reactions.
FLUIDIZED B ED B OILERS A boiler is essentially a combined combustor and heat exchanger where fuel is burnt in a particular mode of gas –solid contacting.