Refractory Lining Materials For Coal Gasifiers

A Literature Review of Reactions Involving High-Temperature Gas and Alkali Metal Vapors.
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SeriesInformation circular (United States. Bureau of Mines) -- 8721
ContributionsRaymon, N., Sadler, L.
ID Numbers
Open LibraryOL21735804M

Refractory lining materials for coal gasifiers: A literature review of reactions involving high-temperature gas and alkali metal vapors [Raymon, N. S.] on *FREE* shipping on qualifying offers. Refractory lining materials for coal gasifiers: A literature review of reactions involving high-temperature gas and alkali metal vapors.

Deposit analyses of waste-heat boiler tubes 1 1 2 2 5 7 10 12 12 14 15 19 REFRACTORY LINING MATERIALS FOR COAL GASIFIERS A Literature Review of Reactions Involving High-Temperature Gas and Alkali Metal Vapors by N. Raymon 1 and L. Sadler III 2 ABSTRACT As part of an interagency agreement with the Energy Research and Development.

Refractory lining materials for coal gasifiers. [Washington]: Bureau of Mines, [] (OCoLC) Online version: Raymon, N.S.

Description Refractory Lining Materials For Coal Gasifiers FB2

(Nancy S.). Refractory lining materials for coal gasifiers. [Washington]: Bureau of Mines, [] (OCoLC) Material Type: Government publication, National government publication: Document Type: Book.

The molten slag is corrosive to refractory linings, causing chemical dissolution and spalling. The refractory lining is composed of chrome oxide, alumina, and zirconia; and is replaced every months.

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Gasifier users would like greater on-line availability and reliability of gasifier liners. Coal Gasification Apparent Porosity Refractory Lining Iron Oxide Content Coal Slag These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm : Jean-Pierre Kiehl.

N.S. Raymon and L.Y. Sadler, "Refractory Lining Materials for Coal Gaisifers – A Literature Review of Reactions Involving High-Temperature Gas and Alkali Metal Vapors," U.S.

Bureau of Mines IC.

Details Refractory Lining Materials For Coal Gasifiers PDF

Author: Publisher: ISBN: Size: MB Format: PDF, Docs Category: Languages: en Pages: View: Get Book. Book Description: The biaxial stress rupture behavior for two of the alloys, Type stainless steel and Haynesis shown in figures.

The other two alloys show similar behavior. The rupture parameter, P, is an empirical quantity which reflects the simultaneous effects of both. refractory and demonstrated it can dramatically decrease Refractory Lining Materials For Coal Gasifiers book penetration depth and extend refractory service life in laboratory cup, rotary drum tests, and field test panels.

Coal is one of the major feedstock in gasifiers. Slag properties from impurities in coal affect not only the operation of a gasifier, but also the performance of Cr.

Refractory Lining Material Improves Gasifier Performance Refractory materials are used to line the interior of slagging gasifiers, where a carbon-based feedstock such as coal, petcoke, and/or biomass, is converted at high temperatures in an oxygen-deficient environment to produce synthesis gas, which can be used in power generation.

In Smithells Metals Reference Book (Eighth Edition), Design of refractory linings. A refractory lining usually comprises a safety or backup layer behind the working lining in contact with the furnace contents. The whole body is encased in a metal shell.

The temperature gradients in the system and the properties of all materials must be considered. ent refractory wear patterns and mechanisms within the gasifiers. Because of the high ash content in gasifiers using coal, petcoke, or combinations of them and because of their corrosive nature; gasifiers using these sources of carbon feedstock require high chrome oxide.

Chromia-free lining materials for gasifiers have to be developed with due consideration to environmental requirements. Novel Al 2 O 3 -SiC-C (ASC) refractories were considered in this work. The corrosion resistance of ASC refractories and a conventional Cr 2 O 3 -Al 2 O 3 -ZrO 2 (CAZ) refractory was evaluated in air and in coke bed.

refractory materials capable of withstanding the harsh, high-temperature environment created by the gasification reaction, that slag penetration and attack of the refractory is a primary cause of the rapid degradation of the refractory lining in slagging gasifiers.

the brick were exposed to a flowing coal slag for five hours at a. A new refractory material developed by by the US Office of Fossil Energy’s National Energy Technology Laboratory (NETL) demonstrates increased reliability and service life in commercial gasifier use.

The new improved-performance refractory lining material has been successfully tested and could lead to greatly increased reliability and economics of gasification technology as a clean and.

The down time for the installation of new refractory lining reduces on-line availability of the gasifier. Improved refractory materials for slagging coal gasifiers. January Caner Doğan. coal, petroleum coke, high sulfur fuel oil or materials that would otherwise be disposed as waste.

The gaso can be used in place of natural gas to generate electricity, or as a basic raw material to produce chemicalsmd liquid fuels. Saint-Gobain Ceramics (SGC) has been supplying complete refractory linings to gaSifiers for over SO years. This comprehensive reference details the technical, chemical, and mechanical aspects of high-temperature refractory composite materials for step-by-step guidance on the selection of the most appropriate system for specific manufacturing processes.

The book surveys a wide range of lining system geometries and material combinations and covers a broad/5(4). Spalling reduces the lifetime of hot‐face refractory linings in slagging coal gasifiers, and has an important impact on the economics of coal gasification.

Spalling is caused by ingress of the molten slag into the porous refractory, followed by reaction with the refractory to produce either volumetric expansion (compressive stresses) or.

Refractory materials are used to line the interior of slagging gasifiers, where a carbon-based feedstock (such as coal, petroleum, coke, and/or. N.S. Raymon and L.Y. Saddler III: “Refractory Linings Materials for Coal Gasifiers—A Literature Review of Reactions Involving High-Temperature Gas and Alkali Metal Vapors,” USBM Information CircularU.S.

Bureau of Mines, Washington, DC,pp. 1– This work describes the technology necessary to optimize the performance of any refractory lining. It provides an overview of the thermomechanical behaviour and wear of refractory lining systems, and details the structural behaviour of several classical refractory geometries, highlighting the critical regions of each lining system where high stress is most likely to create fractures.

Coal Forge linings, revisited By clay, they mean clay of any type but preferably a clay with a placticity like good potters or artists clay.

These work up stiff and harden without cracking severly. A refractory clay or mixture is slightly better but you do not need refractory temperature material for claying a forge.

Abstract. Slagging gasifiers are used to produce chemicals and/or electricity from feedstocks such as coal and/or petroleum coke. A gasifier environment includes pressures from to psi, temperatures from C, are cyclic, reducing gases of CO and H2, and molten ash that interacts with the refractory liner materials.

Slag attack of refractory materials used to line the hot face of slagging gasifiers limits their service life to between 3 and 24 months. These gasifiers use coal, petroleum coke, or combinations of them as raw materials to produce chemicals, liquid fuel, and/or electricity; with future consideration being given to the use of other abundant.

Refractory materials that can withstand severe operating conditions for long periods of time are necessary for a continuous, efficient, and reliable gasification process. The traditional high chrome oxide refractory used to line gasifiers fail in 3 to 24 months, requiring complete shutdown of the unit for material replacement.

•1st International Conference on Materials for Coal Conversion and Utilization. NBS Refractories Research for Slagging Gasifiers slagging gasifiers, due to cracking, penetration, reaction, clearly establish refractory material/lining requirements 5.

Given the anti-oxidation advances, could C. by refractory materials under slagging coal gasification conditions. The goal of this work is to The refractory lining is an integral part in the majority of entrained-flow gasifiers.

The Cr2O3 is necessary in a refractory material for sustained material performance in slagging gasifiers. Refractory is key equipment for gasification units Refractory design to be taken into account in early planning stages Refractories can have significant impact on finances (OPEX, production availability) Refractory supplier can help you improve process performance There are few supplier or material standards in the.

Coal and petroleum coke gasification linings must be able to withstand high temperature, high pressure, corrosive slags and atmosphere, as well as a variety of feedstocks.

Saint-Gobain has provided superior refractory lining designs and materials for high-pressure coal and petroleum coke gasifiers. 16 Conclusions “Al 2 O 3-ZrO 2-TiO 2 –new lining materials for slagging gasifiers” Material properties Al 2 O 3 with TiO 2-addition: good thermal shock resistance but critical low HMOR Al 2 O 3 with ZrO 2 shows good thermal shock resistance and high HMOR Corrosion (cup test, TOM-AC, field test) AT and AZ show marginal slag infiltration, no dissolution or crack formation.

Development of Improved Performance Refractory Liner Materials for Slagging Gasifiers Kyei Sing Kwong U.S. Department of Energy Albany Research Center, Queen Ave., SW, Albany, OR The refractory lining contains the harsh gasifier environment A spalled refractory material flowing down the hot face of a gasifier is circled in.Commercially available refractories were exposed to coal gasifier reactor environments, reproduced in the laboratory with a high-temperature, high-pressure test facility, followed by extensive postexposure evaluation.

Thirty-six castable or gunnable refractories and cements and 24 refractory .JACerS is a leading source for top-quality basic science research and modeling spanning the diverse field of ceramic and glass materials science.

Spalling reduces the lifetime of hot‐face refractory linings in slagging coal gasifiers, and has an important impact on the economics of coal gasification.