Power generation system using waste heat of sintering circular cooler

Abstract

A power generation system using waste heat of a sintering circular cooler comprises a first fume hood, a second fume hood, an air pipe, a first air blower, a first fume pipeline, a double-pressure waste heat boiler and a steam compensating steam turbine. The first fume hood is arranged at a low temperature zone of a circular cooler; the second fume hood is arranged at a high temperature zone of the circular cooler; the air pipe is communicated with the first fume hood and a cooling air conduit at the high temperature zone of the circular cooler; the first air blower superposes outdoor coolingair with fume discharged from the low temperature zone of the circular cooler in the air pipe as cooling air of the high temperature zone of the circular cooler; the first fume pipeline is used for communicating the second fume hood with an air line of the double-pressure waste heat boiler; the double-pressure waste heat boiler is used for converting the fume in the first fume pipeline into high pressure steam and lower pressure steam, the high pressure steam enters a high pressure section of the steam compensating steam turbine for doing work, and the lower pressure steam enters a low pressure section of the steam compensating steam turbine for doing work; and the steam compensating steam turbine is used for driving a generating unit to generate power. The invention provides a power generation system using waste heat of a sintering circular cooler, and the system is used for improving inlet temperature of the waste heat boiler without affecting properties of sintering processes.

Description

technical field [0001] The invention relates to the utilization of waste gas of a sintering ring cooler, in particular to a waste heat power generation system of the waste gas of a sintering ring cooler. Background technique [0002] At present, the exhaust gas waste heat power generation system of the circular cooler in the sintering process that is widely used in the iron and steel industry includes: [0003] see figure 1 The first existing sintering process ring cooler exhaust gas waste heat power generation system. The system uses a dual-pressure waste heat boiler 11a and an intake steam turbine 13a. The existing first type of exhaust gas waste heat power generation system of the ring cooler in the sintering process only uses the flue gas discharged from the flue gas discharge port 8a of the high temperature section. Since the temperature of the flue gas discharged from the flue gas discharge port 8a in the high temperature section is generally about 360°C, the parame...

AI Technical Summary

Problems solved by technology

Although the exhaust gas temperature in the high-temperature area is slightly increased due to the connection of the circulating flue pipe to the low-temperature flue gas inlet pipe, the main steam parameters of the follow-up equipment - the waste heat boiler are still low, and the power generation has not increased significantly

Moreover, since the circulating smoke pipe is connected to the low-temperature flue gas inlet pipe, the cooling effect on the material in the low-temperature zone is very poor.

Images