Abstract:
The invention relates to a method and device for feeding a mud-like catalyst mixture into a polymerization reactor. The catalyst mixture is fed from a container into a batching space of a feeder connected thereto, from which channel the catalyst mixture is further fed by batches into the polymerization reactor by the use of the pressure of a medium fed into the feeder. In accordance with the invention, after each catalyst batch fed into the polymerization reactor, the medium is substantially removed from the batching space of the feeder by leading the medium via an outlet channel into a space between two on/off valves before filling the batching space with a new catalyst batch.
Abstract:
A reaction product is formed by a process which involves the transfer of the reaction product from the autoclave to a receiving vessel at a substantially constant flow rate. Just prior to this transfer, the pressure in the receiving vessel is brought up to the pressure in the autoclave by passing gas from the autoclave to the receiving vessel. The flow of gas from the autoclave to the receiving vessel is then stopped, and the pressure in the receiving vessel is allowed to drop due to transfer of heat from the gas to the walls of the receiving vessel. The resulting pressure difference between the autoclave and the receiving vessel is used to initiate the transfer of the reaction products from the autoclave to the receiving vessel. A pressure release valve on the receiving vessel is then controlled by means a signal derived from a flow meter which measures the flow rate of the reaction products flowing from the autoclave to the receiving vessel to maintain constant this flow rate.
Abstract:
A method of forming titanium calcium oxide is disclosed comprising the steps of mixing titanium hydroxide, calcium hydroxide, and water in an autoclave, then heating these reaction constituents at a selected temperature and pressure for a time to allow the formation of titanium calcium oxide crystals of a desired size. Next, pressure in a receiving vessel is set below the pressure in the autoclave, and a valve is opened to allow the reaction product to flow from the autoclave to the receiving vessel at a constant flow rate. Heat is removed from the reaction product while the reaction product passes through a flow passage between the autoclave and the receiving vessel. This process can be modified to form zirconium calcium oxide.
Abstract:
Particulate solid fuel is conveyed from an atmospheric container into an atmospheric lock hopper which is then pressurized by a high pressure inert gas. The fuel is passed from the pressurized lock hopper into a pressure vessel and subsequently from this vessel into a gasification reactor. In the container and the lock hopper the solid fuel is fluidized by an inert gas. In the pressure vessel synthesis gas is used for this purpose, the latter gas also being applied for the pneumatic transport of the fuel from the vessel into the reactor.
Abstract:
An apparatus and method for stripping and depressurizing fine particulates mixed with gas discharged from a vessel operated at elevated temperature and pressure conditions to a low pressure vessel using a purge gas injected into a conduit designed for significant frictional pressure loss per unit length of conduit while maintaining a substantially constant velocity of the mixture conveyed.
Abstract:
The present invention is directed to an apparatus and method for minimizing mass flow rate fluctuations of a particulate solid fuel and gas mixture having a coal mass flow rate ranging from about 50-800 kg/m.sup.3 and a corresponding frequency range of about 0.1 to 100 Hertz transported to a reactor.
Abstract translation:本发明涉及一种用于使煤质量流量范围为约50-800kg / m 3和相应频率范围为约0.1至100赫兹的颗粒状固体燃料和气体混合物的质量流量波动最小化的装置和方法 运送到反应堆。
Abstract:
An apparatus for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.
Abstract:
The particulate solid is maintained in a bed in contact with a liquid within a high pressure vessel. The particulate solid is supported in the vessel in a cone-like configuration. A discharge tube is provided communicating with the particulate solid running from the bottom of the cone externally of said vessel and pressure on the supported particulate is produced to discharge said particulate out of said vessel via the discharge tube.
Abstract:
A metering apparatus for introducing free-flowing, powdered substances in a controlled manner into spaces under pressure consists of a storing unit,a proportioning unit consisting of a shaft which is sealed in a housing with the aid of sealing rings and glands, can be rotated alternately through 180.degree. in each case and is provided with two depressions opposite one another, for accepting and discharging the substance respectively,an end unit consisting of a cylindrical cavity, which is sealed with the aid of sealing rings and glands and has a nozzle-like shape toward the space under pressure, and a spindle which is arranged concentrically with respect to the cavity, is capable of making to and fro stroke-like movements and, at its tip, has a slope corresponding to that of the nozzle-like feed, the end unit being arranged flush with the wall of the space,a connecting line between the storing unit and the accepting depression within the proportioning unit, a connecting line between the discharging depression within the proportioning unit and the cavity of the end unit, andtwo connections for inert gas.
Abstract:
In this process for the removal of residue particles from a discharge opening of a pressurized gasification reactor according to the fluidized bed or flue dust principle the residue particles are removed by a worm conveyor. To avoid pressure fluctuations in the actual gasification process and to perform a continuously operating residue removal not susceptible to disturbances the discharge opening of the worm conveyor housing is provided with an adjustable pressure device for exerting a closing pressure on a closing element.