Abstract:
Compounds, synthesis of, and methods for synthesizing metal alkoxide derivatives; and metal alkoxide derivatives for use as flame retardants are described. Group 13 metal alkoxides having flame retardant properties may be prepared by reacting the group 13 metal trihydroxide with an alcohol.
Abstract:
A method for alkyl oxygenate (e.g., methanol) manufacture via partial oxidation of alkane (methane) uses an injectively-mixed backmixing reaction chamber in fluid communication with a tubular-flow reactor. Alkyl free radicals are induced in the backmixing reaction chamber prior to being fed through a flow-restriction baffle to the tubular-flow reactor. Injective intermixing of feed streams agitates the backmixing reaction chamber. In one embodiment, a variable position flow restriction baffle is axially moved to commensurately modify the backmixing reaction chamber and tubular-flow reactor volumes. In another embodiment, the tubular-flow reactor is quenched with a variable position quenching input. The method further provides for condensing the output stream from the reaction system in a condensing scrubber and also for recycling a portion of the scrubbed output stream to the reactor system.
Abstract:
The invention provides a process for producing carbon nanotubes which includes supplying a continuous fluidized feed of a catalyst and at least one hydrocarbon to a reactor operating under conditions suitable to produce carbon nanotubes. The fluid is made to flow though the reactor with a swirling motion which ensures that the internal surfaces of the reactor are cleaned of deposits.
Abstract:
A method for alkyl oxygenate (e.g., methanol) manufacture via partial oxidation of alkane (methane) uses an injectively-mixed backmixing reaction chamber in fluid communication with a tubular-flow reactor. Alkyl free radicals are induced in the backmixing reaction chamber prior to being fed through a flow-restriction baffle to the tubular-flow reactor. Injective intermixing of feed streams agitates the backmixing reaction chamber. In one embodiment, a variable position flow restriction baffle is axially moved to commensurately modify the backmixing reaction chamber and tubular-flow reactor volumes. In another embodiment, the tubular-flow reactor is quenched with a variable position quenching input. The method further provides for condensing the output stream from the reaction system in a condensing scrubber and also for recycling a portion of the scrubbed output stream to the reactor system.
Abstract:
An electromagnetic susceptor for chemical processing that is made from a matrix material that surrounds a non-matrix material that is made from a material that is different from the matrix material, the matrix material is constructed of material having lower dielectric losses compared to the non-matrix material, the non-matrix material initially absorbs electromagnetic energy applied to the electromagnetic susceptor to a greater extent than the matrix material, the non-matrix material produces subsequent heat in the matrix material, and the greatest length of measurement of the electromagnetic susceptor is between one nanometer and 10 meters.
Abstract:
A method of locally concentrating an applied electric field to promote chemical reaction having a dispersion of individual field concentrators on the surface of a substrate, embedded on a substrate, and embedded on the surface of a substrate, in which the individual field concentrators consists of shaped material and the shape and material are capable of producing a locally concentrated electric field in the vicinity of the field concentrator from interaction between the field concentrator and the applied electric field.
Abstract:
A device for thermal treatment of gases and pollutants employs alternate cavity (1) and susceptor (9) geometries for providing more homogeneous interactions of applied electromagnetic energy (6) in the volume of the susceptor (9) regardless of the flow rate and diameter of the exhaust duct (3) width. The heat transfer methods improve the overall heat efficiency of the device. The susceptor (9) structure has reflectivity as principle mode of interaction with applied electromagnetic energy (6) which allows for energy to penetrate the susceptor (9) which is formed of composite susceptive materials. The use of field concentrators (5) to concentrate the energy density of the applied electromagnetic energy (6) provides a simple method of controlling the temperature versus energy in the susceptor (9).
Abstract:
Articles for hot hydrocarbon fluid wherein the surface for contacting the fluid is a metal oxide, amorphous glass or metal fluoride diffusion barrier material coated on a metal substrate. The metal oxide, amorphous glass or metal fluoride is deposited by chemical vapor deposition (CVD), e.g., by effusive CVD of an organometallic compound on the surface without the use of carrier gas, without pre-oxidation of the surface and without thermal decomposition of the diffusion barrier coating material. Examples of coating materials deposited by effusive CVD are SiO.sub.2, TiO.sub.2, spinel and Al.sub.2 O.sub.3. The articles having the coated surfaces find utility in components subjected to high temperatures wherein the components are in contact with hydrocarbon fluids without additives, without special attention to quality control and without the need for special processing.
Abstract:
Apparatus and methods of closing and sealing chemical reactor vessels, which are relatively less susceptible to contaminant build-up and more easily maintained in such a state.The chemical reactor vessel comprises a vessel body and a separable head attached thereto wherein the means for attaching and sealing said head to said body comprises; a seal means, a flange means, a shield means and an attachment means.The seal means functions, in compression, to prevent leakage of fluids into and from said chemical reactor vessel. The flange means functions to impose compressive loads to the seal means to cause the seal means to prevent leakage of fluids into and from the chemical reactor vessel. The shield means are integral with at least one of the flange means, which function to substantially prevent contaminants from contacting the seal means and those portions of such flange means which are adjacent to the seal means and which function to inhibit the build-up of contaminants within and adjacent to the attaching and sealing means. The attachment means function to apply compressive loads to the flange means and concurrently function to removably fix the head to the body. The attachment means are subject to the functions of the shield means and which, concurrently, function to fix the shield means to the chemical reactor vessel such that the shield means cannot be separated from the chemical reactor vessel without first disassembling the attachment means and releasing the compressive loads from the flange means.
Abstract:
Apparatus for the manufacture of sulphuric acid comprising at least one gas-concentrated sulphuric acid contacting unit and a sulphuric acid heat exchanger. The contacting unit and/or the heat exchanger is formed of high silicon content austenitic steel.