摘要:
Heat exchange apparatus comprising first and second chambers separated by a gas-permeable plate, and a jacket for receiving liquid to be heated positioned around the first and second chambers, said first chamber being for receiving hot gases which, during use of the apparatus, pass through the plate into a heat exchange bed of particulate material positioned in the second chamber and supported on the plate.
摘要:
Carbonaceous fuels are burned in a high pressure fluidized bed combustor to produce a hot sinter or ash which is passed to a fluidized bed heat exchanger for direct contact with pressurized air. The resultant heated pressurized air is expanded through a gas turbine which drives an electrical generator.
摘要:
An arrangement of heat-transfer conduits for a fluidisation vessel comprising a bundle of ''''hair pin'''' U-tubes upstanding from interdigitating supply and discharge heaters for the tube bundle.
摘要:
Apparatus for cooling heated pulverulent material which has been discharged from a rotary kiln, furnace, or reactor and also for recovering the product heat for use as a preheated source of air for combustion in the kiln or for drying in another process. The apparatus comprises several levels of fluidized beds which are arranged one above another and spaced from the walls of the outer casing, so that pulverulent material flows by means of displacement overflow from the upper to the lower bed while cooling air passes upward, through, and around the fluidized bed of material. The cooling air is then removed from the casing and discharged directly as preheated air into a rotary kiln, furnace, or reactor.
摘要:
Granular solids are thermally treated in a fluidized bed utilizing internal combustion. The process is carried out in such a way that the hot load can be varied independently of other operating conditions by supplying at least one third of the air supplied to the fluidized bed as secondary air which is fed to the upper half of the height of the fluidized bed below the top level thereof.
摘要:
Apparatus for interacting particulate material with gas in which particulate material is fed into one end of an elongated chamber and discharged from the opposite end thereof, while gas under pressure is fed through the perforated bottom wall of the chamber so that the particulate material fed into the chamber will form a fluidized bed of such material therein which flows from the one to the opposite end of the chamber. The space in the chamber immediately above the bed is divided by a plurality of transverse partition in successive zones preventing particulate material which is carried by the gas upwardly out of the fluidized bed to pass from one to another zone while permitting unobstructed flow of the material in the fluidized bed from one to the opposite end of the elongated chamber to assure thereby uniform treatment of the particulate material during its pasage through the chamber.
摘要:
ACTION ZONE IS MAINTAINED WITHIN THE MIDDLE AND TOP THIRD OF THE BED, THE HALIDE FEED BEING PART OF A PIPELINE COMPLEX INCLUDING AN INERT GAS WHICH MAY BE USED SOLELY OR WITH THE HALIDE GAS DURING START-UP AND SHUTDOWN TO MAINTAIN THE BED FLUIDIZED.
A GENERATOR FOR PRODUCING A GASEOUS METAL HALIDE WHEREIN A PULVERULENT METAL IS REACTED WITH A GASEOUS HALIDE IN A FLUIDIZED-BED OF INERT MATERIAL THE FEED RATE OF THE PULVERULENT METAL TO THE GENERATOR BEING REGULATED THROUGH THE INSTRUMENTALITY OF TEMPERATURE MEASURING PROBES, LOCATED AT STRATEGIC PLACES IN THE GENERATOR BED, AND A COMPUTER WHICH MAINTAINS CONSTANT SURVEILLANCE OF THE TEMPERATURE PROFILE IN THE BED, SO THAT THE RE-