摘要:
A method and device for maintaining a high gas temperature to a gas turbine in a partial-load operation of a PFBC power plant, wherein gas is normally fed out from a fluidized bed through at least one central channel in a combustor which combustor also includes tubes for cooling the bed and for generating steam, tubes normally being completely accommodated in the bed, and during partial-load operation of the plant upper portions of the tubes being exposed above the surface of the bed, wherein during partial-load operation of the plant at least part of the combustion gases is discharged from the combustor via at least one side channel positioned substantially at least at one side of the exposed tube portions, these tube portions thus being completely or partly bypassed by the combustion gases.
摘要:
A method of combustion and a combustion plant in which absorbent is regenerated is described herein. During the combustion of a fuel in a combustion chamber enclosing a fluidized bed, a fuel and an absorbent are supplied to the fluidized bed. The combustion gases generated during the combustion are collected and purified in a separating member by separation of solid material from the combustion gases. The separated solid material is recirculated to the fluidized bed through a channel, and a gaseous medium is supplied in a controlled manner to the separated solid material present in the channel in order to displace the combustion gases and provide a chemical reaction.
摘要:
A method of combustion in a pressurized, fluidized bed and in the freeboard thereof. The combustion method is further characterized by the recirculation of solid sulfur absorbing materials. A gas channel, designed so as to prevent fluidizing gas from entering the channel from below, is provided such that it opens to the freeboard and to a separating member which separates particulate matter from the combustion gasses.
摘要:
A method for maintaining a nominal working temperature of flue gases during operation of a PFBC power plant having a pressure vessel with a combustor enclosed therein for combustion of a fuel in a fluidized bed, a gas turbine for receiving flue gases formed during the combustion in the combustor, a compressor driven by the gas turbine for compression of air which is utilized as combustion air during the combustion in the combustor, and a steam turbine driven by steam generated in tube bundles in the bed, includes the steps of burning a complementary fuel in the flue gases generated during the combustion in the fluidized bed downstream of the tube bundle for increasing the flue gas temperature to a nominal level for the process and using oxygen residues in the flue gas as oxidizing agents during combustion of the complementary fuel.
摘要:
The present invention consists of a pet carrier with two compartments. The first compartment, in which the pet is placed, consists only of side walls and a bottom. The second compartment consists only of side walls and a top. The second compartment is configured to be placed, in telescopic fashion, directly over the first compartment. In this manner, the second compartment moves up and down in a vertical plane from a lowered position in which it substantially covers the first compartment, representing the smaller or collapsed configuration of the carrier, to a raised position over the first compartment, representing the carrier's larger or expanded configuration. The two compartments are locked in the raised and lowered positions by manually operated spring snap locks. Releasing the snap locks simply and instantaneously allows the carrier to be collapsed or expanded.