摘要:
In a fluidized bed reactor system having a gas cooler, with cooling surfaces, downstream of a first cyclone separator, the cooling surfaces are cleaned by introducing sufficient concentration of bed particles into the gas during, or just prior to, cooling, so that the particles mechanically dislodge deposits from, and thereby clean, the cooling surfaces. The particles are then removed downstream of the cooler by a second separator, and the bed particles separated by the second separator may be returned to the fluidized bed reactor at or just before the cooler to again be used to effect cooling. Cleaning may be practiced in spaced time intervals only (e.g. periodically or intermittently), or continuously. Where practiced intermittently the efficiency of operation of the first separator may be diminished by introducing a fluid stream, or a solid object, into the vortex flow within the first separator, so that a sufficient number and size of particles pass through the first separator so as to effect cooler cleaning.
摘要:
Hot flue or process gases are cleaned utilizing an apparatus containing a barrier filter module formed of a monolithic ceramic support structure coated with a thin porous ceramic layer having a pore size of about 0.04-0.5 microns, and a catalyst module formed of a support structure coated with catalyst. The hot flue gases may be associated with a fluidized bed boiler plant, such as a circulating fluidized bed reactor. Gases to be cleaned are passed through the barrier filter module into contact with the thin porous ceramic layer, and then through the catalyst module so that there is a catalytic reaction with the gas.
摘要:
A single fiber optic optical sensor in one segment of a divided interferometer and a remote demodulation interferometer segment associated therewith.
摘要:
A force measuring device generally comprising a hollow, three-dimensional container defining interiorly thereof at least one chamber is disclosed. The device includes at least a pair of optical fiber coils with the length of the optical fiber on each of the coils being substantially equal. The pair of coils are mounted on opposite sides of a wall of the hollow container and there are means within the container normally exerting a force on the coil mounted within the container. The system also includes an optical interferometer having a pair of legs with means connecting each of the pair of coils in a leg of the interferometer. Radiant energy emitting means are provided for directing radiant energy into the legs of the interferometer and through the pair of coils and radiant energy detecting means are connected to the interferometer.
摘要:
A mass is attached between light reflective ends of a pair of rectilinearly aligned optic fibers and maintained in such position with the fibers under a slight tension. The pair of fibers comprise a portion of two arms of a Mach Zehnder or Michelson interferometer so that an acceleration along the longitudinal axis of the rectilinearly aligned optic fibers increases the length of one of the pair of fibers and shortens the length of the other, whereby electromagnetic rays traveling in the pair of fibers, travel different distances resulting in a phase shift which phase shift is directly proportional to the force applied to the fibers by the mass and therefore directly proportional to the acceleration. Accelerations in directions perpendicular to the longitudinal axes of the fibers cause equal phase shifts in each arm and therefore would not be detected. Thermal expansion of the fibers and acoustical noises should also balance out.
摘要:
Optical telecommunications systems use phase compensation interferometry wherein receiver units have interferometer configurations with path length differences identical to path length differences of arms in interferometer configurations at corresponding transmitter units. Faraday rotating mirrors are used to minimize sensitivity to polarization effects. A modified Michelson interferometer structure is used to provide optical signals which convert to electrical signals in a form allowing relatively easy demodulation. A demodulation circuit uses the property whereby two signals have a 90.degree. phase shift.
摘要:
A filter assembly for high temperature gases, such as from a circulating fluidized bed reactor, mounts monolithic ceramic filter elements within an upright vessel so that as the hot gas flows from the top toward the bottom of the vessel the gas passes through the elements with the clean gas discharged through a side wall of the vessel. The particle discharge is provided at the bottom of the vessel. Filter supporting elements within the vessel are cooled by cooling fluid, and pulse cleaning elements are associated with each of the filter elements. Flow directing elements within the vessel typically define a generally conical or pyramidal shaped flow directing surface. The flow directing elements may be refractory material bodies, or funnel shaped thin elements (e.g. of metal capable of withstanding high temperature), and may be mounted so that small amounts of movement are possible to accommodate thermal contraction or expansion.
摘要:
A method for crushing metal cans into rectangular blocks or bales wherein cans are fed through a precrusher, which flattens and rips open the cans to drain liquids therefrom and leaves protruding torn tabs and flaps that facilitate bonding of the cans into a self-sustaining bale. The flattened cans are collected in a charging bin until a predetermined weight is reached; then the cans are released into a bale-forming chamber, which is closed by a hinged door forming an initial compression member. A ram then compresses the cans longitudinally in the chamber, the ram having ribs on the compression face to form grooves in the bale for future stack-retaining straps. A sliding door opens the end of the baling chamber for ejection of the formed bale by continued extension of the ram.