Theoretical estimation of adiabatic temperature rise from the heat flow data obtained from a reaction calorimeter

A novel method for estimating the transient profile of adiabatic rise in temperature has been developed from the heat flow data for exothermic chemical reactions that are conducted in reaction calorimeter (RC). It has also been mathematically demonstrated by the present design that there exists a direct qualitative equivalence between the temporal evolution of the adiabatic temperature rise and the concentration of the limiting reactant for an exothermic chemical reaction, carried out in semi batch mode. The proposed procedure shows that the adiabatic temperature rise will always be less than that of the reaction executed at batch mode thereby affording a thermally safe corridor. Moreover, a unique reaction scheme has been designed to establish the independent heat effect of dissolution and reaction quantitatively. It is hoped that the testimony of the transient adiabatic temperature rise that can be prepared by the proposed method, may provide ample scope for further research.

► This method for estimating ΔTad(t) against time in a semi-batch reactor is distinctively pioneer and novel.
► It has established uniquely a direct correspondence between the evolution of ΔTad(t) in RC and CA(t) in a semi-batch reactor.
► Through a unique reaction scheme, the independent effects of heat of mixing and reaction on ΔTad(t) has been demonstrated quantitatively.
► This work will help to build a thermally safe corridor of a thermally hazard reaction.
► This manuscript, the author believes will open a new vista for further research in Adiabatic Calorimetry.