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Cement Kiln Waste Heat Utilization System and Method for Directly Driven Rotary Equipment by Steam Turbine

A technology for rotating equipment and steam turbines, applied in mechanical equipment, cement production, steam engine installations, etc., can solve problems such as large energy loss, and achieve the effect of avoiding energy loss and improving waste heat recovery and utilization efficiency.

Active Publication Date: 2016-08-24
NANJING KESEN KENEN ENVIRONMENT & ENERGY
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Problems solved by technology

[0004] Aiming at the large energy loss of the existing cement kiln waste heat power generation system, the present invention aims to provide a cement kiln waste heat utilization system and method in which the steam turbine directly drives the rotating equipment, so as to achieve the purpose of improving the recovery and utilization rate of cement kiln waste heat

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  • Cement Kiln Waste Heat Utilization System and Method for Directly Driven Rotary Equipment by Steam Turbine
  • Cement Kiln Waste Heat Utilization System and Method for Directly Driven Rotary Equipment by Steam Turbine

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 As shown, a cement kiln waste heat utilization system in which the steam turbine directly drives the rotating equipment includes a waste heat recovery device, a high-temperature fan steam wheel drive, a kiln exhaust fan steam wheel drive, a cement mill steam wheel drive, and a circulating cooling water device and exhaust gas treatment devices.

[0026] The waste heat recovery device mainly includes deaerator 18, feed water pump 19, kiln head boiler 20, kiln tail boiler 21, kiln tail preheater 22 and grate cooler 23; the outlet of deaerator 18 is connected with the inlet of feed water pump 19, The outlet of the feed water pump 19 is connected to the inlet of the public economizer 20b of the kiln head boiler 20, and the air intake in the middle of the grate cooler 23 is connected to the inlet of the kiln head boiler 20 through an ...

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Abstract

The invention provides a cement kiln waste-heat utilization system and a method for directly driving rotating equipment by a turbine. The system and the method belong to the technical field of cement kiln waste-heat utilization. The waste-heat utilization system comprises a waste-heat recovery device, a high-temperature fan turbine drive device, a kiln tail exhaust fan turbine drive device, a cement grinding mill turbine drive device and a circulating cooling water device. According to the system and the method, superheated steam generated by the cement kiln waste heat is utilized to directly drive rotating equipment such as a high-temperature fan, a kiln tail exhaust fan and a cement grinding mill, the energy loss during the multistep energy transformation process from heat energy to electric energy to kinetic energy of waste heat power generation is avoided, and the cement kiln waste heat recovery and utilization efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery and utilization of cement kilns, and in particular relates to a cement kiln waste heat utilization system and method in which a steam turbine directly drives rotating equipment. Background technique [0002] The waste heat discharged by the cement kiln during the production process mainly has two parts: ①The hot air discharged by the grate cooler at the kiln head; ②The waste gas discharged from the C1 cylinder of the kiln tail preheater. At present, for the above two parts of waste heat, the waste heat boiler at the kiln head and the waste heat boiler at the kiln tail are mainly used to recover and generate superheated steam, and then the superheated steam from the two waste heat boilers is combined through the steam main pipe and sent to the steam turbine generator unit for work Power generation, the power generated can be used for cement plant production. [0003] The energy convers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00F01K11/02F01D15/10
CPCY02P10/25Y02P40/121Y02P80/15
Inventor 侯宾才方明王朝雄刘亚雷刘木堂
Owner NANJING KESEN KENEN ENVIRONMENT & ENERGY
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