Fluidized bed roaster outer wall waste heat recovery system

A waste heat recovery system, a technology of boiling roasting furnace, applied in furnaces, furnace components, waste heat treatment and other directions, can solve the problems of waste, waste heat is not well utilized, and reduce the utilization rate of energy, so as to improve the service life and improve the Efficiency and the effect of reducing overall energy consumption

Pending Publication Date: 2022-04-12
CENT SOUTH UNIV +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In actual operation, the waste heat of the outer wall is directly lost to the atmosphere, the waste heat is not well utilized, there is a lot of waste, and the utilization rate of energy is reduced

Method used

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  • Fluidized bed roaster outer wall waste heat recovery system

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] see figure 1 , the present invention includes a liquid metal heat exchange system and an organic Rankine cycle system;

[0022] The liquid metal heat exchange system consists of a heat exchange pipe wound on the outer wall of the fluidized roaster 1 for heat exchange and an electromagnetic pump 8 installed on the heat exchange pipe to form a closed cycle. Insulation cotton is laid on the heat exchange pipe of the exchange. The medium used in the liquid metal heat exchange system is liquid metal gallium indium tin alloy or a mixed alloy of gallium indium alloy. Its thermal conductivity is much higher than that of water and heat transfer oil, and it has good heat transfer Ability, electromagnetic pump 8 is the power unit of liquid metal circulation.

[0023] The organic Rankine cycle system is composed of an evaporator 2, a steam turbine 3, a generator...

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Abstract

The invention discloses a fluidized bed roaster outer wall waste heat recovery system. The fluidized bed roaster outer wall waste heat recovery system comprises a liquid metal circulating system and an organic Rankine circulating system. The liquid metal circulating system is composed of a pipeline exchanging heat with the outer wall of the fluidized bed roaster and an electromagnetic pump. And the pipeline is wound on the outer wall of the fluidized bed roaster for heat exchange. The organic Rankine cycle system is composed of an evaporator, a steam turbine, a generator, a condenser and a circulating pump. A working medium in the evaporator is organic matter. And the circulating pump is a power device for organic matter circulation. According to the waste heat recovery system, liquid metal obtained after waste heat absorption from the outer wall of the fluidized bed roaster is fed into an evaporator through an electromagnetic pump and exchanges heat with an organic matter working medium, the liquid metal obtained after heat exchange flows into the electromagnetic pump, next circulation is started, organic matter absorbs heat and evaporates, and generated steam is used for power generation; therefore, the waste heat of the outer wall of the fluidized bed roaster is recycled, and the gas after heat exchange enters the condenser to be cooled to start the next cycle.

Description

technical field [0001] The invention relates to a waste heat recovery system, in particular to a waste heat recovery system for the outer wall of a fluidized roasting furnace. Background technique [0002] At present, the amount of zinc metal produced by the hydrometallurgy process in the world has exceeded 85%, and it has also reached more than 80% in my country. The fluidized fluidized fluidized roaster is an important equipment for the zinc hydrometallurgy process. The temperature of the outer wall of the fluidized roaster is between 130 and 150°C, and the heat dissipation of the outer wall accounts for about 7% of the energy expenditure of the fluidized roaster. In actual operation, the waste heat of the outer wall is directly lost to the atmosphere, and the waste heat is not well utilized, resulting in a large amount of waste, which reduces the utilization rate of energy. Effective use of the waste heat on the outer wall of fluidized roasting furnace is an important m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D17/00F01K11/02F01K17/00F01D15/10
CPCY02P10/25
Inventor 刘柳刘卫平闫红杰侯成明蒋文周萍
Owner CENT SOUTH UNIV
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