Energy recovery from the rotary kiln of white cement Neyriz

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Najafzadeh Mohammad Hosein; Sardashti Berjandi Mohammad Reza; Shahraki Farhad; Mansouri Somayeh

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Journal Paper

Paper Information

Journal: Modeling in Engineering Year:2023 | Volume:21 | Issue:73 Page(s): 201-228

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Information Journal Paper

Title

Energy recovery from the rotary kiln of white cement Neyriz

Author(s)

Najafzadeh Mohammad Hosein | Sardashti Berjandi Mohammad Reza | Shahraki Farhad | Mansouri Somayeh | Issue Writer Certificate

Keywords

Cement kilnQ4

Energy recoveryQ4

Heat lossQ4

Organic Rankine CycleQ4

Abstract

A huge part of the thermal energy consumed in energy industries is lost after exiting the process. Some of this waste heat can be recovered by various methods such as generating electrical energy, generating hot air for the production process or providing hot water. In Iran, the cement industry has always been far from the optimal use of resources, including energy, due to the existence of energy subsidies. In this research, the Heat loss from the baking system of Nireez white cement plant as a model industry of the country to evaluate the simultaneous production of heat and electricity by using the Organic Rankine Cycle that generates electric power has been investigated in Span Plus V12 software. This evaluation is done to calculate the Heat loss, including the mass and energy balance on the cooking system, as well as the energy balance on the pre-cooking system. The heat energy obtained enters the Rankine cycle and is converted into energy by the turbine. The results show that 635 kilowatts of electrical energy was produced from energy recycling, which leads to the elimination of 317.5 kg/hour of greenhouse gas.

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