Abstract:
This invention presents a sulphurous acid generator which employs a combination of novel mechanisms which maximize the efficiency and duration of contact between sulphur dioxide gas and water to form sulphurous acid in an open nonpressurized system. The present invention also incorporates a novel high temperature concrete for use in constructing portions of the present invention. The present invention also employs means for substantially eliminating any discharge plume.
Abstract:
The invention is a downcomer with self adjusting, hinged; vapor/liquid flood windows and non-uniform downcomer weir for increasing the tray efficiency and reducing the tray tower flooding and operational/structural instability.
Abstract:
An object of the present invention is to provide a process and an apparatus for treating an aqueous medium at low running costs with a decreased electricity required for hydrothermal electrolytic reaction. The present invention proposes a two-step process comprising a first step of performing a conventional hydrothermal reaction or a conventional electrolytic reaction prior to hydrothermal electrolytic reaction to degrade readily degradable substances or ammonia or various electrolytically degradable organics and then a second step of performing hydrothermal electrolytic reaction to degrade the remaining organics, whereby the electricity consumed by hydrothermal electrolytic reaction in the second step can be greatly reduced.
Abstract:
A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in one or more of the stations or chambers as the liquid moves through the tank or reactor.
Abstract:
The present invention is to provide a gas-liquid processing apparatus having a high contact efficiency of a gas and a liquid and a high reaction efficiency at a low production cost. A static type fluid mixer includes a passage pipe for the passage of a fluid and a spiral blade body arranged in the passage pipe with the longitudinal direction substantially perpendicularly but being absent in the center portion of the passage pipe. A liquid and a gas are supplied into the static type fluid mixer and a fluid is returned from the bottom portion of the static type fluid mixer to the upper portion via the pipe for the fluid circulation. The fluid is maintained in the static type fluid mixer at a pressured state higher than the atmospheric pressure.
Abstract:
A method for removing acid gas components from combustion gas and natural gas. The method includes bringing the gas mixture into contact with sea water and subjecting the gas mixture and sea water to turbulent mixing conditions. This causes the acid gas to be absorbed by the sea water. The sea water can be disposed of offshore without any detrimental effect on the environment.
Abstract:
A method and an apparatus for controlling reactions of a gas and a fluid that makes use of excellent reactivity of carbon soot molecules, metal porphyrin complexes and metal phthalocyanin complexes which are in an excited state has an arrangement that the carbon soot molecules, the metal porphyrin complexes and the metal phthalocyanin complexes which are excited by a physico-chemical method, such as light irradiation, and a gas containing oxygen are brought into contact with each other to generate active oxygen. Further, the gas containing the harmful substance and a fluid are brought into contact with each other so that direct reactions of the active oxygen and the excited molecules decompose the harmful substances.
Abstract:
A novel injector/reactor apparatus and an efficient process for the partial oxidation of light hydrocarbon gases, such as methane, to convert such gases to useful synthesis gas for recovery and/or subsequent hydrocarbon synthesis. Sources comprising a light hydrocarbon gas, such as methane, and oxygen or an oxygen-containing gas, preheated and pressurized, are injected through an injector means at high velocity into admixture with each other in the desired relative proportions, at a plurality of mixing nozzles which are open to the partial oxidation zone of a reactor and are uniformly-spaced over the face of the injector means, to form a reactant gaseous premix having a pressure at least 3% lower than the lowest upstream pressure of either of the streams of the individual gases. The gaseous premix is injected in a time period which is less than its autoignition time, preferably less than 9 milliseconds, at a velocity between about 25 to 1000 feet/second, into the partial oxidation zone of the reactor. The gas mixture reacts before or simultaneously with the autoignition time delay of the mixture, to reduce the amounts of CO.sub.2, H.sub.2 O and heat produced by the partial oxidation reaction to form a useful syngas which is cooled and recovered.
Abstract:
An improved method of reducing the concentration of carbonyl sulfide in a hydrocarbon gas containing carbonyl sulfide, which method comprises (a) feeding the hydrocarbon gas containing carbonyl sulfide to a hydrolysis section to contact the hydrocarbon gas with hot aqueous absorbent to heat the hydrocarbon gas to form hydrolysis section effluent absorbent and hydrolysis section effluent gas containing carbon dioxide and hydrogen sulfide and having a lower concentration of carbonyl sulfide than the hydrocarbon gas; (b) withdrawing and cooling the hydrolysis section effluent absorbent to form a cool aqueous absorbent; (c) cooling the hydrolysis section effluent gas in a cooling section by contacting the hydrolysis section effluent gas with the cool aqueous absorbent to form warm aqueous absorbent and a cooling section effluent gas containing hydrogen sulfide and carbon dioxide; (d) heating the warm aqueous absorbent to form hot aqueous absorbent; (e) feeding the hot aqueous absorbent to the hydrolysis section; and, (f) recovering the cooling section effluent gas as product and an apparatus for treating hydrocarbon gas.
Abstract:
A process is described for the preparation of dialkyl carbonates by oxidative carbonylation of the corresponding alcohol in the presence of a copper-containing catalyst at elevated temperature and elevated pressure, which process permits simple separation of the copper-containing catalyst by sedimentation, and of the reaction water in the case of methanol by simple distillation from the reaction solution.