Equipment for recycling low-temperature heat of lime kiln

Abstract

The invention provides equipment for recycling low-temperature heat of a lime kiln; the equipment mainly comprises the lime kiln, a working medium storage tank, a working medium preheater, a steam generator, a steam adjusting device, a steam turbine, a generator, a transmitter and a condenser. A working medium is preheated by using low-temperature gas of the lime kiln through the working medium preheater; the preheated working medium is converted into steam by using the heat discharged by heat-conducting oil through the steam generator; and then the generator is driven to generate power by utilizing the steam turbine, and the generated power can be supplied to electrical equipment of the lime kiln device, and also can be merged into a general power grid. When the power is insufficient, the power from the general power grid can be supplemented to power driving equipment of the lime kiln, therefore, the operation flexibility is high. By adopting the equipment, the low-temperature heat of the lime kiln can be fully utilized, meanwhile, the emission of greenhouse gases is reduced, and the production cost of lime is reduced. The equipment can be used for recycling the low-temperature heat of the lime kiln and also can be used for recycling the energy of other low-temperature heat source systems.

Description

technical field [0001] The invention belongs to the technical field of heat energy recovery and utilization, and in particular relates to equipment for recovery and utilization of low-temperature heat energy in a lime kiln. Background technique [0002] Lime is an important building material and an important raw material in metallurgy and chemical industry. The use of beam-type lime kiln is a new technology for lime production. The kiln body is divided into a preheating zone, a calcination zone and a cooling zone. The calcination zone is equipped with a combustion beam, and the combustion beam is equipped with a burner, which injects fuel and combustion air to burn the calcined material. The preheating zone is equipped with an upper suction beam to extract flue gas, and the cooling zone is equipped with a lower suction beam to extract the hot air after cooling the lime product. Both the combustion beam and the beam body of the lower suction beam are equipped with cooling ch...

AI Technical Summary

Problems solved by technology

This patent application can effectively recover low-temperature waste heat in industry and utilize low-temperature heat sources such as geothermal energy or solar energy, but does not provide a specific way to utilize low-temperature heat energy in lime kilns

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