56results about How to "Improve waste heat power generation efficiency" patented technology

The invention discloses a medium-low temperature waste heat sliding power generator based on shape memory alloy. The medium-low temperature waste heat sliding power generator comprises a trapezoid bracket located in a magnetic field. A sliding block is connected into the trapezoid bracket. The top end of the sliding block is connected with the top of the trapezoid bracket by a spring. Two sides ofthe sliding block are connected with guide rods fixed to the left and right sides of the trapezoid bracket by SAM springs respectively. Wires are arranged on the front and rear ends of the sliding block in a winding mode. Electric brushes are connected to the corners of the top of the sliding block. The electric brushes penetrate through wire holes formed in the top of the trapezoid bracket. A heat source is arranged below the sliding block. The structure is simple, installation is convenient, the cost of the device is low, and economic benefits are high. When the device is positioned in themagnetic field, the medium-low heat can be fully used, and waste heat power generating efficiency is improved. Universality is high, and limitation on application places is low. The device can collectlarge heat sources of factory waste pipes or small heat sources of domestic exhausting pipes after appropriate size modification. Application and maintenance are simple, and energy supplying except the heat source to be collected is not required.

The invention discloses a single-pressure recovery generating system of waste heat of a dry method cement production line, being capable of improving generating efficiency. The kiln head grate cooler of the single-pressure recovery generating system is provided with at least two gas picking-up openings including a high-temperature gas picking-up opening and a moderate-temperature gas picking-up opening. A high-temperature superheater is arranged in the system; the high-temperature gas picking-up is connected to the gas inlet of the high-temperature superheater; the moderate-temperature gas picking-up opening is connected to the gas inlet of an AQC (Air Quench Cooler) boiler; the steam outlet of the AQC boiler and the steam outlet of a kiln tail SP (Suspend Preheater) boiler are connected to the steam outlet of the high-temperature superheater; the steam outlet of the high-temperature superheater is connected to a steam turbine, which makes the primary superheat steam of the kiln tail SP boiler and the AQC boiler obtain reliable secondary superheating in the high-temperature superheater; moderate-temperature flue gas and the heat-exchanged flue gas of the high-temperature superheater are taken as the heat source of the AQC boiler to realize the stepwise recovery of the energy of the flue gas of the waste heat of the grate cooler, increase steam enthalpy and improve effective enthalpy drop; the steam quality is improved and the flow is reduced, which reduce the exhaust loss of the waste heat in a condenser of the steam turbine and promote the improvement of waste heat generating efficiency.

The invention discloses a device and a process for generating power through efficient recovery of waste heat of sintered ores and belongs to the technical field of cogeneration. The device comprises a sintered ore cooling system, a waste heat power generating system and a smoke system, wherein the sintered ore cooling system and the waste heat cycling power generating system are connected through the smoke system to form a loop. The process comprises the steps of 1), cooling of sintered ores; 2) the smoke system; and 3) waste heat power generating. The device and the process for generating power through waste heat have the advantages that discharged waste heat is used fully during cooling of sintered ores, the electric energy production is improved significantly, the power rate of the system is reduced significantly, and the energy-saving effect is significant.