SciELO - Scientific Electronic Library Online

 
vol.82 issue194Simulation of a hydrogen hybrid battery-fuel cell vehicleThe production, molecular weight and viscosifying power of alginate produced by Azotobacter vinelandii is affected by the carbon source in submerged cultures author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


DYNA

Print version ISSN 0012-7353

Abstract

PAREDES-SANCHEZ, José Pablo et al. Using waste energy from the Organic Rankine Cycle cogeneration in the Portland cement industry. Dyna rev.fac.nac.minas [online]. 2015, vol.82, n.194, pp.15-20. ISSN 0012-7353.  http://dx.doi.org/10.15446/dyna.v82n194.44028.

Cement production is intensive in terms of energy consumption. An analysis of the resources involved in manufacturing clinker needs a corresponding mass and energy balance. This balance may indicate the existence of residual heat flows that are not used. This paper summarizes the development of a protocol for the evaluation of a cement plant rotary kiln to implement an Organic Rankine Cycle (ORC) system for cogeneration. The results show that 19.2% of the energy preheater exhaust gas can be recovered to be used in producing 5.5 GWh/year of electricity and 23.7 GWh/year of thermal energy in the cement plant. The electricity generated would represent annual savings of 1.18 $/t cement. The thermal energy produced in cogeneration, equivalent to coal in the plant itself, represents cement savings of 0.51 $/t cement and emissions reductions of 8 kt CO2/year.

Keywords : energy balance; heat recovery; Portland cement; Organic Rankine Cycle.

        · abstract in Spanish     · text in English     · English ( pdf )