An ideal distinctiveness of glycerin is obvious colour, low bitterness and is clinically harmless for human cause it to be broadly used as a one of the substances in several industries named as food and cosmetics industry. Frequently, glycerin is produced or generated by performing any of these processes giving by splitting, saponification & transesterification on vegetable or animal fats and oil. One of the major process that give to the success of the glycerin purification process is bleaching process in which the process of erasing the pigment color as from crude glycerin by adsorbent materials occurs. During the process, the temperature would regulate exactly because of fact that the optimal temperature will raise the effectiveness of adsorption process. Yet, any inappropriate control performance given by overshoot should cause useless side response that goes to degradation of end product quality. It is desirable to find proper control technique for regulating the temperature of glycerin bleaching process in order to prevent any degradation of end product quality. Controlling slow dynamic process such as temperature for glycerin bleaching process is inherently difficult. This is due to the unfavorable characteristic of the system that possess nonlinearities caused by actuator constraint that will lead PID controller produce inadequate performance due to windup phenomenon. This paper shows the implementation of the Dahlin’s Controller Algorithm to control the temperature in Glycerin Bleaching process. The process model is taken as using first order plus dead time (FOPDT) model. Two controllers, given by the PID Controller and Dahlin’s Controller are to be implemented and compared through simulation. The analysis of the performance for both the techniques will be based on, rise time, settling time; percent overshoot and time to recover load disturbances. © Research India Publications.