Cement, Energy & Environment

Uttam Kuamr Roy Vice President Works My Home Industries Limited MY HOME INDUSTRIES LTD., has initiated promoting the use of waste as fuel as part of drive for sustainable development and resource conservation . The earl ier practice of disposal of Hazardous waste was incineration in furnaces. MHIL explored the possibility of installation of a full proof system for safe handling and usage of these hazardous wastes. MHIL is a joint venture company with CRH pic, an Irish company, which is a leading building materials company in Europe and America. CRH has rich experience in usage of Alternate Fuel (liquid and solid) at its European plants and with this, FLS was contacted for a suitable system. Conceptualization, Design & Erection The conceptualization was frozen with the detailed study conducted by in-house experts from CRH, experts from pharmaceutical industry & F L Smidth. Safety & environment aspects were taken care of by Hazop study through M/s Cholamandalam. FLS was inducted to provide World Class design, engineering and supply of equipment. Selection of vendors and sub-vendors was done with in-house experts of MHIL & CRH and cooperation received from CPCB & APPCB regarding norms for emissions. Co-processing facility designed by FLS was installed successfully. MHIL got the HAZOP study and pre- commissioning safety audit through M/s. Cholamandalam MS Risk, for the liquid hazardous waste handling and firing system and further strengthened the safety system by in-house experts of MHIL & CRH . CPCB & APPCB Guidelines CPCB and APPCB have given the guidelines and directives regarding safety & environmental aspects for Handling and Firing liquid hazardous waste (organic waste residues/spent organic solvent) into Kiln main burner. All aspects were taken care of with approvals received before the commissioning of the system. System Description The liquid solvents are carried to site from various pharmaceutical industries in lorry tankers and the liquid waste is transferred into the properly designed double walled stainless steel storage tanks by Nitrogen replacement into the tankers to avoid any vapours left over in the tankers. Nitrogen blanketing (controlled in auto mode) is always present in the storage tanks to avoid any vapours coming out of the storage tanks into atmosphere. The solvents shall be pumped from storage tank to main burner by means of feed pump to specially designed air atomized oil burner gun via a burner MF Station. MF Station will measure, control and regulate the flow of solvents through a PLC based control cabinet which contains all the necessary control loops for burner set operation.This is a very unique system of its kind in cement plants in the country and is totally concealed one and nothing is