Abstract:
Disclosed is a method for using at least one static probe during polymerization in a fluid bed polymerization reactor system to monitor a coating on a surface of the reactor system and a distal portion of each static probe, wherein the coating is exposed to flowing fluid within the reactor system during the reaction. The surface may be a reactor bed wall (exposed to the reactor's fluid bed) and the coating is exposed to flowing, bubbling fluid within the fluid bed during the reaction. The method may include steps of: during the polymerization reaction, operating the static probe to generate a sequence of data values (“high speed data”) indicative of fluid flow variation (e.g., bubbling or turbulence), and determining from the high speed data at least one electrical property of the coating (e.g., of a portion of the coating on the distal portion of the static probe).
Abstract:
A process for production of synthesis gas employing a catalytic membrane reactor wherein the membrane comprises a mixed metal oxide material.
Abstract:
A novel apparatus for an ion exchange system is provided. The apparatus comprises a first column for housing a first fluidized bed through which particles are flowed countercurrently to an ion-containing fluid to yield ion-loaded particles, a second column through which the ion-loaded particles are flowed countercurrently to an eluent fluid to yield regenerated particles, and a transport section which transfers the regenerated particles for re-introduction into the first column to repeat the ion exchange cycle in a continuous manner. A continuous method of ion exchange is also provided.
Abstract:
A controller for a reformer that: changes the supply quantity of at least either one of combustible gas and combustion oxidizing gas supplied to a combustion section; detects a change which is caused in the combustion state of the combustion section as a result of a change of the supply quantity; and checks the combustion state which arose at the combustion section before the change based on the previously detected detection result. Thus, a gone-out state of the combustion section can be reliably judged with a low cost device, and the combustion state of the combustion section in the reformer of a fuel cell system can be adjusted to an optimum combustion state.
Abstract:
Provided is a system and method for producing and purifying biodiesel. In particular, the system comprises a tandem arrangement of at a modular biodiesel reactor and a continuous flow separation and purification unit. The system can further comprise an evaporation unit that is placed between the biodiesel reactor and the continuous flow separation and purification unit.
Abstract:
A novel apparatus for an ion exchange system is provided. The apparatus comprises a first column for housing a first fluidized bed through which particles are flowed countercurrently to an ion-containing fluid to yield ion-loaded particles, a second column through which the ion-loaded particles are flowed countercurrently to an eluent fluid to yield regenerated particles, and a transport section which transfers the regenerated particles for re-introduction into the first column to repeat the ion exchange cycle in a continuous manner. A continuous method of ion exchange is also provided.
Abstract:
This invention relates to catalytic reactor membranes having a gas-impermeable membrane for transport of oxygen anions. The membrane has an oxidation surface and a reduction surface. The membrane is coated on its oxidation surface with an adherent catalyst layer and is optionally coated on its reduction surface with a catalyst that promotes reduction of an oxygen-containing species (e.g., O2, NO2, SO2, etc.) to generate oxygen anions on the membrane. The reactor has an oxidation zone and a reduction zone separated by the membrane. A component of an oxygen containing gas in the reduction zone is reduced at the membrane and a reduced species in a reactant gas in the oxidation zone of the reactor is oxidized. The reactor optionally contains a three-dimensional catalyst in the oxidation zone. The adherent catalyst layer and the three-dimensional catalyst are selected to promote a desired oxidation reaction, particularly a partial oxidation of a hydrocarbon.
Abstract:
A vessel packed with a microfibrous media made of micron-sized highly conductive fibers, which are able (and may be used) to immobilize various reactive materials including catalysts, sorbents, electrocatalysts, and other chemically reactive solids. The vessel enables fine temperature control and a uniform temperature profile for a range of highly endothermic or exothermic chemical reactions, sorptions, separation processes, mixing operations, and heat transfer applications.
Abstract:
A controller for a reformer includes supply quantity changing means for changing the supply quantity of at least either one of combustible gas and combustion oxidizing gas supplied to a combustion section, a combustion state change detecting means for detecting a change which is caused in the combustion state of the combustion section as a result that the change of the supply quantity is brought by the supply quantity changing means, based on a detection result from the combustion state detecting means, and combustion state checking means for checking the combustion state which arose at the combustion section before the change brought by the supply quantity changing means, based on a detection result from the combustion state change detecting means. Thus, the gone-out state of the combustion section can be reliably judged with the construction of a low cost, and the combustion state of the combustion section in the reformer of a fuel cell system can be adjusted to an optimum combustion state.
Abstract:
This invention provides mixed conducting metal oxides particularly useful for the manufacture of catalytic membranes for gas-phase oxygen separation processes. The materials of this invention have the general formula:A.sub.x A'.sub.x A".sub.2-(x+x') B.sub.y B'.sub.y B".sub.2-(y+y') O.sub.5+z ;wherex and x' are greater than 0;y and y' are greater than 0;x+x' is less than or equal to 2;y+y' is less than or equal to 2;z is a number that makes the metal oxide charge neutral;A is an element selected from the f block lanthanide elements; A' is an element selected from Be, Mg, Ca, Sr, Ba and Ra;A" is an element selected from the f block lanthanides or Be, Mg, Ca, Sr, Ba and Ra; B is an element selected from the group consisting of Al, Ga, In or mixtures thereof; andB' and B" are different elements and are independently selected from the group of elements Mg or the d-block transition elements.The invention also provides methods for oxygen separation and oxygen enrichment of oxygen deficient gases which employ mixed conducting metal oxides of the above formula. Examples of the materials used for the preparation of the membrane includeA.sub.x Sr.sub.x' B.sub.y Fe.sub.y' Co.sub.2-(y+y') O.sub.5+z,wherex is about 0.3 to about 0.5,x' is about 1.5 to about 1.7,y is 0.6,y' is between about 1.0 and 1.4 andB is Ga or Al.