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D-339empresa anónima / Estados Unidos
1210
Insulation for gaseous reactor component that must withstand high temperatures
high temperature, reducing atmosphere, insulation, Iconel
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Resultado deseado
This organization is seeking insulation for an internally cooled cylindrical component of a gaseous reactor. The end of the cooled cylinder inside the reactor is exposed to high heat fluxes of 1-3 MW/sq meter and an atmosphere consisting primarily of carbon monoxide and hydrogen. The aim is to lower the temperature of the exposed end of the cylinder by 100-200°C. The insulation should be durable, last at least one year and be able to adhere to or blanket a smooth metal surface.
28/02/11 - El deadline de esta demanda ha caducado
Compartir demanda Detalles de la demanda :
BACKGROUND
Conditions inside the gaseous reactor are extreme. Ambient temperature runs about 1500°C at 50–60 atmospheres, with a wind velocity of about 100m/s. The process runs continuously. Projected working lifetime of the reactor between maintenance shutdowns is two years; but because the cylinder component has not been able to be insulated sufficiently, reactor operations require much more frequent shutdowns.
The component is roughly cylindrical with one end placed into the high pressure, high temperature conditions. Only the 0.1–0.2 meter portion of the cylinder that extends into the reactor must be protected. (The entire cylinder is round on one end with a diameter of 0.4 meter, total length of about 3.5 meters and weight of 2,000 kg.) All surfaces are of convex curvature. Currently, the cylinder is cooled internally, and this brings the outer surface to a temperature of about 700°C. This organization needs to insulate the end of the cylinder that enters the reactor (about 0.1–0.2 meter) so as to lower the surface temperature by 100-200°C. Additional internal cooling is not an option.
The failure mode of the cylinder is thermal fatigue, which is failure by cracking causing by alternating stresses caused by alternating temperatures.
Thermal barrier coatings, and underlying bond coatings to increase their adherence to various substrates, are known. However, those known to work at high temperatures have been designed for oxidizing combustion atmospheres; those designed to work with reducing atmospheres are perhaps not well known at similar temperatures. Coatings which work at temperatures of 300-400° C are known to work in reducing (hydrogen-containing) gases with hydrogen sulfide. In petroleum refinery process equipment This application is unique in that it is both high temperature and reducing.
CONSTRAINTS
• Must tolerate extreme environment for two or more years: exposure to a gas temperature of 1500°C, carbon monoxide-hydrogen reducing environment at 50–60 atmospheres, modest but high-frequency temperature fluctuations of 2-3 cycles per second and significant pressure fluctuations also of 2-3 per second, continuous operation, and turbulence inside the reactor.
• Must lower the surface temperature of the cooled component by 100-200°C.
• Must survive exposure to humid conditions when exposed to ambient air, as well as shipping and handling by plant personnel.
• Must be chemically inert to reactions with carbon monoxide and hydrogen.
• Thermal conductivity must be no more than one-half of the value of zirconium oxide (2.4 Btu/(hr-ft-oF or 4.1 W/m-oC)
• Coating must stick/adhere to a smooth metal surface made of Inconel (nickel-chromium-iron) and stainless steel (iron-chromium-nickel) alloys. The components contain high pressure cooling water at a temperature of 180oC.
• Failure (loss/spalling) of any insulating coat should not present a problem to the substrate or process. The insulating coating cannot affect the substrate other than by reducing its temperature.
• A “nice to have” feature of the material surface is an emissivity of no more than 0.3, relative to a black body of 1.0. (a good reflector of thermal energy). Lower values will be superior in terms of reflecting more thermal energy away from the component.
POSSIBLE SOLUTION AREAS
Industries of interest might be aerospace propulsion, space craft propulsion, fossil fired combustion facilities, petrochemical plants, chemicals plants, heating, ceramics, insulation, thermal radiation management, pulp and paper processing facilities, nuclear power plants, incinerator facilities, studies/equipment by power generation facilities and organizations and similar organizations.
Field Of Use and Intended Application
High-temperature gaseous reactor.
Desired Outcome
Ideally, a coating that can be applied to the cylinder component to drop its temperature by 100-200°C.
A substitute material for the Inconel alloy that is more resistant to thermal fatigue (higher fatigue strength, lower coefficient of thermal expansion and/or higher thermal conductivity) might be another avenue.
Previously Attempted Solutions
Plasma spray zirconium oxide, such as that used on aero and land-based turbine engine blades. This coating also requires a bond coat. This coating has failed in previous tests in similar conditions. The suspicion is that it is because the coating is designed for high temperatures in an oxidizing atmosphere (a jet engine), while the chemical process in question is highly reducing with hydrogen and carbon monoxide and the oxidized bond coat may not be stable in contact with hot hydrogen and carbon monoxide.
Refractory bricks have been considered. However, the insulation must be tolerant of mechanical abuse. Refractory bricks tend to break and crack, causing thermal expansion problems. Leer más
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D-515empresa anónima / Reino Unido
1739
Buscamos materiales innovadores y soluciones para mantener un líquido caliente durante 2 horas en una recipiente (por ejemplo, tecnología de vacío, aislamiento, revestimientos, materiales de cambio de fase y recubrimientos)
Thermal insulation, phase change materials, coating to retain heat
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Resultado deseado
Estamos trabajando con un proveedor líder de productos para cocina, que está activamente buscando tecnologías innovadoras, productos y soluciones para conservar la temperatura del café de filtro hasta un máximo de 2 horas desde su elaboración. Por tanto, estamos interesados en encontrar soluciones que mantengan la temperatura adecuada del café, sin deterioro en el sabor o el aroma, a un precio más competitivo.
12/05/12 - El deadline de esta demanda ha caducado
Compartir demanda Detalles de la demanda :
Existing solutions use either a glass storage container on a hot plate, or a thermal-type jug/carafe that is glass-lined plastic or twin-walled stainless steel. Using a hot plate provides hot spots and affects the taste of the coffee, so is not of interest. Thermal-type jugs have issues balancing performance against cost, e.g. plastic/glass-liner jugs are cheap, have good performance but they can be fragile, whereas stainless steel is robust but more costly. Our client is keen to find solutions that provide the performance and durability of stainless steel with the cost of glass-lined plastic jugs. Solutions may be found from other industries that work with heat maintenance, management, preservation and/or insulation, and could include:-
• Improved vacuum insulation technology for the jug
• Innovative thin insulation materials to replace vacuum
• Technology to prevent temperature drop as coffee enters jug
• Coatings / films to keep heat in the jug
• Liner materials
• Innovative jug designs to prevent heat escaping through the lid (contains hole for coffee to drip into jug)
• Phase change materials that absorb heat and return it to maintain coffee temperature
The liquid currently enters the storage device at ~80-90°C, and the volume is between 300ml – 1400ml. The maximum accepted temperature drop is 3 degrees per hour for maximum volume and 6 degrees per hour for half of the maximum volume.
Potential solutions should therefore: -
• Keep fluids at original temperature in bulk (without reheating), regardless of the volume
• Use food-safe materials and enable safe use by the consumer
• Be a bulk-storage solution (e.g. a jug)
• Use cost effective materials or provide improved performance allowing material reduction
• Provide proven functionality and claimable differentiation
• Be protected by IP
The temperature preservation function should not require changes to the architecture of the coffeemaker itself and only alter the storage (e.g. jug). However, innovative solutions delivering good price/performance which might require some minor changes to the coffeemaker will be taken into consideration.
The client company is a leader in innovative design and branding of products and is able to offer any potential partner the benefit of extensive marketing and cost-effective manufacturing. All this enables a speedy entrance to market through established marketing channels. We are willing to explore any reasonable commercial arrangements, including licensing in, strategic alliances, partnering arrangements or even outright acquisition.
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D-780empresa anónima / Reino Unido 2914
Se buscan: materiales y/o procesos que permitan el mantenimiento/reducción de la temperatura de los líquidos en recipientes metálicos o de vidrio
metal containers, glass containers, glass bottles, metal cans, packaging, Beverage, beverages, aerogels, cooling hydrogels, foaming polymers, Coatings
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Resultado deseado
A material that can be applied via printing to ensure the temperature of the beverage is kept below 10 degrees whilst being consumed.
We are seeking material and process technologies that will insulate against heat gain or actively reduce temperature of liquids contained in glass bottles or metal cans. Solutions (e.g. phase change/insulation materials etc) that can easily be coated on to the inside or outside of the bottle or cans on a fast moving production line, whilst ensuring the premium look of the end product, would be of interest. Processes that enable the printing, coating, spraying of thick foam like or phase change materials are also of interest.Detalles de la demanda :
Un material que pueda ser aplicado a través de la impresión para asegurar que la temperatura de la bebida se mantenga por debajo de 10 grados, mientras se consume.
Estamos buscando tecnologías de materiales y procesos que evitan el aumento de calor o reducen activamente la temperatura de los líquidos contenidos en botellas de vidrio o latas metálicas. Soluciones (por ejemplo, cambio de fase / materiales de aislamiento etc) que fácilmente puede ser recubierto sobre el interior o exterior de la botella o las latas en una línea de producción en movimiento rápido, garantizando al mismo tiempo el aspecto de primera calidad del producto final. Son también de interés procesos que permitan la impresión, recubrimiento, pulverización de espuma gruesa o materiales de cambio de fase. Leer más
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D-340empresa anónima / Estados Unidos 1229
Real-time sensor to measure component surface exposure to strain, heat flux, and temperature
sensor, high temperature, heat flux, strain
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Resultado deseado
We need to determine the exposure/service conditions of a component inside a high pressure gaseous reaction pressure vessel in real time while it is operating at extremely high temperatures and pressures. We want to measure surface conditions of strain (first choice) and heat flux (second choice) and temperature (third choice) inside an operating gaseous on several locations on a component.
28/02/11 - El deadline de esta demanda ha caducado
Compartir demanda Detalles de la demanda :
BACKGROUND
Ambient conditions seen by the component inside a high pressure reactor are a gas temperature of 1500°C, gas pressure of 50–60 atmospheres, heat fluxes of 1–3 MW/m2 though the component and a CO/Hydrogen gas. Analyses of the damaged and failed equipment indicate that surface temperatures on the specially cooled component must have reached 600°C – 700°C and that temperature must be cycling to have produced the thermal fatigue cracks observed. The component is internally cooled by high pressure cooling water operating at a temperature of 180 degrees C. We need to document and monitor surface conditions of the component inside a running reactor.
The component is roughly cylindrical with one end placed into the high pressure, high temperature conditions. The cylinder is round on one end with a diameter of 0.4 meter, total length of about 3.5 meters and weight of 2,000 kg. All surfaces are of convex curvature. Only the end of the cylinder exposed to the reactor – about 0.1-0-.2 meter x 0.4 meter diameter – must be monitored. Measurements of areas of a square centimeter would be adequate, while smaller areas of 5mm x 5mm would be great. A total of 10 locations will be adequate over the surface of the component. Surface properties to be measured in priority order are 1) strain, 2) heat flux, and 3) temperature.
The component wall thicknesses are 2-4 mm and are made of Inconel (nickel-chromium-iron) and stainless steel (iron-chromium-nickel) alloys. The components contain high pressure cooling water at a temperature of 180 degrees C.
When operating, the reactor pressure vessel is sealed and also contains the component. Any measurement information from the sensor must be conveyable out through the pressure vessel, by electrical signals via insulated wires or via optical fibers or other means.
Perhaps use of X-ray diffraction to measure the lattice strain of the alloy at the surface could be accomplished, which is a known method to measure materials strain for research.
CONSTRAINTS
• Seek a ready-to-use, mature, and demonstrated measuring/sensing technology. We do not have time to enter a development cycle.
• Able to withstand the extreme conditions inside a sealed, high pressure gaseous reactor, and report in real time through a pressure vessel.
• Maximum thickness of sensor should be a 3 mm. The presence of the sensor should not greatly affect the measurement of strain, heat flux, or temperature.
• Need concept to adhere/glue/weld/stick the sensor to the smooth component surface or
a concept or method to monitor the surface by “looking” at the surface with some sort of light or radiation
• Frequency of sensor response should be at least +/- 2 seconds.
• 1st choice - component surface engineering strains to be measured are 0.05% +/- 0.02%
• 2nd choice - heat fluxes to be measured are 1-3 MW/square meter +/- 0.2 MW/square meter
• 3rd choice - component surface temperatures to be measured are in the range of 400-800 degrees C to a tolerance of +/- 20 degrees C.
• Sensor life during operation of the reactor should be at least one month and preferably one year.
POSSIBLE SOLUTION AREAS
Industries of interest might be aerospace propulsion (engines), space craft propulsion (engines and atmosphere reentry protection systems),, fossil fired combustion facilities, petrochemical plants, chemicals plants, heating, ceramics manufacturing, steel/iron making, heat treatment, insulation, thermal radiation management, pulp and paper processing facilities, nuclear power plants, incinerator facilities, studies/equipment by power generation facilities and similar organizations.
Field Of Use and Intended Application
Monitor surface conditions of components used in high pressure and high temperature chemical reactors. The components under consideration are devices which inject reactants and materials into high pressure and high temperature reactors.
Desired Outcome
Real-time instrumentation to determine the exposure/service mechanical surface conditions of a component which is vital to the function of a chemical process. The information would be used to diagnose equipment failure mechanisms, to validate adequate lifetimes of new equipment and to measure conditions, which could then be reproduced in equipment prototype testing rigs to evaluate alternate equipment designs and materials before substitution into commercial plants. The effort aims to increase component lifetimes, which will reduce maintenance costs and also improve plant productivity.
Previously Attempted Solutions
Welded thermocouples have been placed in various locations, but they compromised the integrity of the component being measured, have limited lifetimes and are fragile in operation and during installation.
Optical pyrometers were used to look at the surface to measure temperatures, but particles in the gas interfered with the measurements.
Strain gauges were not successfully placed on the face of the component being tested. We could not understand how to attach the gauges to the surface and also get the signal out of the pressure vessel.
We also use mathematical modeling to determine the heat fluxes, surface temperatures, and surface strains of interest. But we need real measurement to confirm or to adjust or validate these predictions.
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