WEEK 4 in HLL Orai

This week was another busy one for me. It started with me getting on to the second project, i.e. the glycerine plant instrumentation project, which basically includes providing the instrumentation for sweet water plant so that the yield is increased. This plant is currently working as a batch continuous which has to be converted into a continuous plant, using instrumentation and indicators. The system has to be analysed for being stable and all the different aspects have to be taken into consideration, like if one valve has to be maintained, then how will it be done, without disturbing the entire system. I also had to make the P & I diagram which was to be according to the plant condition now, and where the various instruments will have to be placed, along with a study of the system of producing glycerine form sweet water, which basically is as follows:
The sweet water with an approximate concentration of 5% of glycerine goes to the evaporator from where it is pumped through a heat exchanger, which has steam in it on the shell side. The solution gets heated, and the water vapours start to form, which is used in the heat exchanger of the second evaporator, and that’s how the system goes on, it is a three effect system, i.e. there are three evaporators, with two of them having two heat exchangers each. From the third evaporator, the solution is taken and checked for the required temperature and pressure conditions along with concentration (to be around 88%), if that is satisfied, it goes for distillation, and the glycerine can be extracted, otherwise it is pumped back to the feed tanks, in this way the system becomes a continuous one. So various control instruments have to be provided to the plant at different points, so that the system works. Also there is a preheating system in which the condensate form the first evaporator heat exchanger is sued for preheating the sweet water solution coming in the evaporator, another way of saving energy.
Also the noodle conveying system has been progressing well. The measurements for the chiller pipeline to the heat exchanger has been taken, and the system would be put in place in the coming week, and we will get to know the effect of using chilled water, also descaling would be done for the heat exchanger. The re-routing for the cascade number 4 has also been planned, and would be done as and when the piping arrives.
Apart from all this, I also completed my interim report, for which again I had to make a survey of the entire factory and gaining knowledge about the raw materials used, the electricity consumption done, the various processes that are involved along with the pollution control measures used in the factory which was another knowledge gaining experience.
On the personal front, the week was good with more badminton and pool in the night.