Alarm type sintering waste heat power generation system based on buffer power circuit

Abstract

The invention discloses an alarm type sintering waste heat power generation system based on a buffer power circuit. The alarm type sintering waste heat power generation system based on the buffer power circuit comprises a sintering machine hot flue gas system, a hot waste gas heat utilization system and a sintering waste heat power generation thermal system. A buffer power output system connected with the output end of a turbine generator is arranged in the sintering waste heat power generation thermal system. The buffer power output system comprises a temperature alarm circuit, the buffer power circuit and a storage battery or electric equipment connected with the buffer power circuit. The buffer power circuit is composed of a buffer circuit and a power circuit. The stability of the alarm type sintering waste heat power generation system is improved, and the service life of the alarm type sintering waste heat power generation system is prolonged; running circuits in the system are adjusted so that damage to the storage battery or the electric equipment due to too high voltage fluctuation can be avoided.

Description

technical field [0001] The invention belongs to the technical field of sintering waste heat power generation in iron and steel plants, and in particular relates to an alarm type sintering waste heat power generation system based on a buffer power circuit. Background technique [0002] In the process of iron and steel production, the energy consumption of the sintering process accounts for about 10% of the total energy consumption, ranking second only to the iron-making process. In the total energy consumption of the sintering process, nearly 50% of the heat energy is discharged into the atmosphere in the form of sensible heat from the flue gas of the sintering machine and the exhaust gas of the cooling machine. Power generation by sintering waste heat is an important measure for steel plants to achieve energy conservation and emission reduction. [0003] The sulfur content of the flue gas in the non-desulfurization flue pipe of the sintering machine is low, and the flue gas ...

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Problems solved by technology

In view of the defects that the existing alarm type sintering waste heat power generation system needs to be equipped with an induction fan to extract flue gas, the operating cost is high, the failure rate is high, and the operation of waste heat power generation in the waste heat power generation method is unstable, and the thermal display utilization rate is not high, the purpose of the present invention is to To provide an alarm type sintering waste heat power generation system and method, without affecting the normal production of the sintering process and ensuring the sintering quality, the alarm type sintering waste heat can make full use of the flue gas of the non-desulfurization pipe at the tail of the sintering machine and the waste heat of the cooler exhaust gas Power generation system, and the exhaust gas from the tail of the sintering waste heat boiler is drawn without an induction fan, and the hot exhaust gas in the first and second stages of the annular cooler is drawn out and partially recycled, which can make full use of the flue gas of the sintering machine and the waste heat of the exhaust gas of the annular cooler , reduce equipment investment, reduce operating costs, and increase the power generation of the alarm-type sintering waste heat power generation system

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