Abstract: A method and a device for supplying powder to a scattering device, comprising a device for producing negative pressure, a device for producing excess pressure, a powder container for receiving a powder reserve, and a separating device which is located inside the powder container and which separates a quantity of the powder reserve from the remainder in the powder container. The excess pressure device is connected to an air supply device. When the excess pressure device allows the air to strike the quantity of powder which has been separated, the powder forms swirls. The negative pressure device is connected to the powder container in such a way that the swirling powder is conveyed out of the powder container and to the scattering device by the negative pressure.

Abstract: Apparatus for heating a flowable mixture of particulate coal and a liquid hydrocarbon stream at high pressure by heat exchange with reaction products of a coal hydrogenation and liquefaction process which are obtained in the gaseous phase under reaction conditions, comprising direct heat exchange means and indirect heat exchange means combined into a single structural unit, and being devoid of liquid spray means, said single structural unit containing an upper zone separated from a lower zone and being housed in a pressure vessel, and further comprising feed means for viscous material connected to the bottom part of the housing, said indirect heat-exchange means being equipped with a feed means and a discharge means for a heat exchange fluid, said direct heat-exchange means arranged above said direct heat exchange means and being provided with discharge means for heated viscous material, feed means for heat exchange fluid for said direct heat exchange, and discharge means for the latter heat exchange fluid co

Abstract: In the purification of a hydrogen stream contaminated with at least methane and ethane, e.g. a hydrogen cycle gas from a coal hydrogenation process, where the hydrogen stream is subjected to multistage partial condensation and separation of the respectively formed condensates, the improvement of subjecting the hydrogen stream under a pressure of above about 100 bar to the multistage partial condensation and separation of having in the final condensate 5-40 molar percent of ethane, thereby favorably altering the K-value of methane and its ease of removal from the hydrogen which is only altered in the manner desired when the process is conducted under pressures in excess of about 100 bar.