Cng Research Company

US Government as Represented by the Secretary of the Army

David A George

Lester G Massey

Robert I Brabets

William A Abel

Bernard D Strauss

Irving H Weisman

Harold Wakeley

A method for heating agglomerating slurries in association with a method and apparatus for heating such slurries to supercritical conditions by electrical resistance. A feed slurry and a dilution stream are passed in admixture to a heating zone, and heated. A portion of the heated admixture is separated to provide the dilution stream, which is substantially free of agglomerating solids, to lower agglomeration in the heating zone. Preferably, the solid particles of the dilution stream are comminuted between separation of the dilution stream and before admixture with the feed slurry.

Method for heating agglomerating slurries

An adiabatic expansion orifice assembly for substantially instantaneously passing a coal slurry from a high pressure region to a low pressure region and a corresponding process are disclosed. The orifice assembly includes a housing having an exit end wall and a passageway through the housing. The passageway terminates in a substantially cylindrical portion or opening adjacent the exit end wall. The effective dimensions of the opening provide a flow rate whereby the slurry passes from the high pressure region through the opening to the low pressure region in less than a predetermined period of time, most preferably less than approximately 0.3 microseconds. The corresponding process involves passing a coal slurry through an orifice in less than the predetermined period of time. This process provides substantially instantaneous transition from a high pressure region to a low pressure region.

Adiabatic expansion orifice assembly for passing a slurry from a high

A method and apparatus for heating fluids, such as an agglomerating slurry of coal and water, to supercritical conditions, wherein an electrical current is passed directly through the fluid. The fluid is directed through a container and heated by passing an electric current between a conductor positioned within the container and the interior surface of the container. The current passes through the fluid, and the electrical resistance of the fluid dissipates the electrical current into heat energy, resulting in the direct heating of the fluid. The rate of heating is preferably controlled by adding an electrolyte to the fluid.

Method and apparatus for heating liquids and agglomerating slurries

A pressure relief apparatus for a high pressure slurry processing system is disclosed. The apparatus includes a pressure container, an escape member in the container inlet and a flow restrictor in the container outlet.

Pressure relief system

An apparatus for connecting a power supply to an electrode within a high pressure, high temperature vessel is disclosed. The apparatus includes a conductor extending through the vessel such that the net force exerted upon the conductor by the vessel pressure is negligible. An elastomeric material seals the vessel conductor interface and the apparatus cools the sealing material to avoid softening thereof.

Apparatus for interconnecting a power supply to an electrode within a

A T.V. camera, mounted on the arm of a teleoperator remotely controlled gping hand, is used to view an object to be grasped through an in-line semi-reflective mirror and a laterally disposed reflective mirror. Alignment of the teleoperator with the object is indicated by a single superimposed image of the object on the television viewing screen. Non-alignment of the teleoperator hand and the object is indicated by double images.

Optical indexing system

A fail-safe pneumatically operated by-pass sampling valve suitable for use n hazardous chemical processes utilizes a manually operated spool valve to initiate a pneumatically operated piston driven crank to rotate a sampling valve. The sampling valve withdraws a sample amount of fluid from a process line without disturbing normal process flow. A pneumatically connected spindle valve and a plurality of limiting valves are proximately positioned and operatively connected to the piston to automatically move the piston actuating member from a normally closed non-sampling position to a sampling position and then back to a normally closed non-sampling position.

Growing community of inventors

Park Forest, IL, United States of America

David A George