摘要:
Predominantly aliphatic hydrocarbon materials may be obtained from carbonaceous solids by a sequence of steps comprising gasifying the carbonaceous solids, combining the gasification product stream with an internal recycle stream, separating certain impurities from the combined stream followed by cooling to liquefy and separate the hydrocarbon materials while directly reacting the remaining carbon monoxide and hydrogen in the presence of a catalyst to produce the internal recycle stream.
摘要:
An apparatus for the gasification of coal or other carbonaceous material is provided for operation at an elevated pressure of at least 30 psia, preferably, between 30 psia and 150 psia. Coal or other carbonaceous material passes downwards through two interconnected sections of a gasifier. In the upper section the coal is dried and partially devolatalized and so converted into a char before it passes into the lower section where it is converted, by reaction with steam and air, into ash and a gaseous mixture of carbon monoxide, hydrogen, carbon dioxide, methane, ethane, ethylene, hydrogen sulphide, carbonyl sulphide and small amounts of ammonia and phenols. The coal, ultimately converted to ash, exits the gasifier through a flanged semi-spherical containment section that has an integrated rotating grate, which collects and disposes of the ash and through which pass the air and steam used as reactants in the gasifier.
摘要:
A method of using an apparatus for producing electric power or mechanical drive in which fuel gas produced in a gasifier using air as an oxidant is supplied to the gasifier by extraction from the exit of the air compressor of a gas turbine.
摘要:
A latching mechanism for retaining a shipping container on a transport vehicle includes a fixed support and a latching member mounted on the fixed support for engagement into a latching receptacle on the container. A pivot pin slidably engages a pivot surface on the latching member, and an alignment pin slidably engages a wedging or camming surface on the latching member, thereby causing the latching member to rotate into the released position when loads are applied along the axis of the latching member. A spring yieldably urges the latching member to the latching or engaged position after the latching receptacle moves past a pawl on the end of the latching member.
摘要:
An anti-rotation extension for a railcar braking system. The extension is connected to a brake beam and rides in a frame located guide channel. The channel is preferably oriented offset from the center axis of rotation of the roller wheels. The extension preferably includes flattened portions to prevent rotation of the beam as the brakes are applied.
摘要:
A brake beam assembly for railroad cars. The brake beam includes a clevis rotatably connected to a channel member with the clevis having depending tabs which allow the clevis to be positioned in a right hand or left hand orientation. The clevis is connected to a leaf spring which is positioned in the channel member to accommodate excessive force during braking. The brake head is connected to an adaptor which allows the brake head and shoe to float and accommodate wheel wear or the misalignment of the brake beam and wheelset.
摘要:
A process for producing methanol from air-blown gasified coal. A feed gas stream obtained by the coal gasification step is combined with a recycle gas stream and fed to a reactor where carbon oxides are converted to methanol. Exit gas from the reactor is scrubbed to remove carbon monoxide, and the carbon monoxide-free exit gas is then chilled to remove all components except hydrogen. The hydrogen is then combined with the carbon monoxide and used as a recycle stream. The process enables use of an air-blown gasified coal stream while maintaining the nitrogen content in the reactor at an acceptably low level.
摘要:
Predominantly aliphatic lower hydrocarbon materials may be obtained from carbonaceous solids by a sequence of steps comprising gasifying the carbonaceous solids, combining the gasification product stream with first and second internal recycle streams, separating certain impurities from the combined stream followed by cooling to liquefy and separate the hydrocarbon materials, directly reacting the remaining carbon monoxide and hydrogen in the presence of a catalyst to produce a first internal recycle stream, fractionating the separated hydrocarbon materials to separate and recover the predominantly aliphatic lower hydrocarbon materials from the higher hydrocarbon materials, subjecting the higher hydrocarbon materials to steam cracking to produce a second internal recycle stream, and recycling the internal recycle streams for combination with the gasification product stream as noted above.
摘要:
A method of improving the output and efficiency of a pulverized coal plant by integration with an integrated gasification combined cycle plant. Specifically, embodiments of the invention provide improvements in the performance of an existing coal steam turbine electrical generating plant by the addition of coal gasifiers, a gas turbine and a heat recovery steam generator.
摘要:
Described is a boundary proximity determining system for wirelessly defining a boundary having a programmable shape and for indicating the occurrence of a rover unit traversing the boundary. The boundary proximity determining system includes a base station unit that generates a plurality of magnetic fields. The boundary proximity determining system also includes a rover unit that is responsive to the generated magnetic fields such that the rover unit defines the boundary in terms of the intensities and polarities of the magnetic fields. The rover unit determines whether the rover unit is within or outside the boundary by determining the current location of the rover unit in terms of the intensities and polarities of the magnetic fields and comparing the current location to the boundary.