Abstract:
An apparatus for the dehydrogenation of liquid hydrides consisting of a chemical reactor (18) to dehydrogenate the heated vaporous hydrides, a pre-heating stage (12a, 12b) to pre-heat the hydride, a vaporization stage (14a, 14b), to vaporize the hydride, a superheating stage (16a, 16b) to superheat the vaporous hydrides and a condensation stage (10a, 10b) to cool the dehydrogenation products. All stages, including the reactor, are designed as plate-shaped hybrid heat exchangers stacked side by side. Two cylindrical storage containers (6a, 6b) for the dehydrogenation products are located at both front ends of the heat exchanger stack. Side plates (30, 32) linked to the storage containers (6a, 6b) function as tie rods, providing the apparatus, in conjunction with the storage containers with the required stability. The spaces (36, 38) between the side plates and the heat exchanger stack hold guide channels for the flow media. In particular, the apparatus is distinguished by its inexpensive design, compactness and low weight.
Abstract:
A column reactor, suitable for continuous production of a gaseous reaction product by contacting a liquid reaction medium with a gas-forming agent fixed to a reaction plug comprising a solid substrate provided with a plurality of gas-forming channels. The column reactor overcomes the apparent short circuiting of liquid reaction medium through the reactor by being provided with two or more reaction zones, each zone having its own circulatory by-pass means for liquid reaction medium. To obtain the reaction zones a reaction plug can be divided into two or more spaced apart plug portions. For each reaction zone the circulatory by-pass means provides a portion of the pathway for an internal recirculation current of liquid reaction medium.
Abstract:
Continuous fluorination of carbon is carried out by employing an apparatus for contact reaction of solid powder and reactive gas which comprises a horizontal reactor having a trough provided with weirs (e.g. height: 1 to 6 mm., interval: 5 to 30 cm.) and a vibrating means for vibrating the trough, and in which carbon particles supplied continuously are transported on the trough in a form of thin layer by the vibration of the trough while continuing the reaction by contacting efficiently the carbon particles with a fluorine gas. The contact reaction is efficiently conducted without accumulating the reaction heat to produce the fluorinated carbon in high yields, and the process is useful for the mass production. The apparatus is also useful for various contact reaction of a solid powder and a reactive gas.
Abstract:
Process for the preparation of a concentrated tetrafluoroboric acid from boron/oxygen compounds and hydrogen fluoride by reacting a solid boron/oxygen compound with a hydrogen fluoride-containing gas.
Abstract:
A plasma-chemical reactor for treatment of disperse materials comprises a vertical working chamber. The top portion of the working chamber includes means to feed the disperse material into the reactor. The working chamber is provided with means for feeding and plasma-heating process gas, said means being a number of plasmatrons the nozzles of which are arranged along the periphery of the working chamber bottom portion and directed essentially at a right angle to the working chamber vertical axis. The reactor also includes means for evacuating gaseous products from the working chamber and a bin located under the working chamber and communicating with the bottom portion thereof.
Abstract:
There is provided a process for the beneficiation of titaniferous ores utilizing a plasma jet to carry out the high temperature reduction of the oxides of iron with a hydrocarbon gas in a hot wall continuous plasma reactor which enables particulate solids to be recovered. Iron can readily be removed by leaching or magnetic separation of the particulate solids so as to obtain a feed product containing 90-97 percent titania which is eminently suitable as a feed material for manufacturing titanium dioxide pigment by the chloride process.
Abstract:
Apparatus for the gaseous treatment of sized materials comprising a stack consisting of a plurality of shell members arranged above one another and in partially nested relationship so as to provide a passage for gas to or from the interior of the stack at the junctions between adjacent shell members, means for feeding the material to be treated into the uppermost shell member for downward flow through the stack, means for discharging the material at a controlled rate from the bottom end of the lowermost shell member, aNd chambers at the junctions between adjacent shell members for the supply or exhaustion of treatment gases to or from the stack.