Power generation by different waste heat recovery methodologies with reference to cement works in Pakistan: A case study for cement industry in Pakistan

Cement industry is one of the strongest candidates for waste heat recovery (WHR) due to the reason that about 40% of heat utilize for clinker production process is exhausted to atmosphere from exhausts of suspension preheater (SP) and air quenching chamber (AQC), without utilization. In this paper, different technologies for power generation by WHR system are discussed, as main concern nowadays is increasing power generation by different WHR technologies by the same source. The demonstration is done on a case study where WHR unit is not yet installed. Comparison of power generation is done utilizing different methodologies along with their results. The applied CDM methodology applied and resultant emission reductions are also shown. The conclusions are given for the best system that is suitable as per our limitations and operational conditions. The monitoring policy of waste hear recovery power plant for billing and power usage is also devised. The advantages and barriers in-terms of installation of waste heat recovery system are also mentioned. It can be a role model for other third world countries like Pakistan, for sustainable development.