OPERATIVE FLEXIBILITY OF A PROCESS
Production of black carbon, Altamira Tamps.
Optimization of the operative flexibility en the main reactor
The process of production of the black carbon consumes oil that should be fed hot to the reactor. The heating of the oil is carried out using the hot stream leaving of the reactor where highly exothermic reaction takes place and It is controlled to maintain constant temperature by adding desmineralized water (turning off the reaction).
Considering that the raw materials has a variable composition the stream leaving of the reactor shows considerable variations of temperature, and the heating of the oil is difficult of maintaining constant in the entrance of the reactor so it is required to add cold oil recycling the excess.
The energetic diagnosis of the process and the thermal characterization of the heat exchangers network were carried out; the results recommended to recovery the heat using thermal oil (therminol 66) and with this utility preheat the process oil guaranteeing a constant temperature in the feeding of the reactor and eliminating the recirculation of oil.
To integrate a circuit of thermal oil integrated for:
* Storage tank
* Pumping system
* Thermal oil (therminol 66)
* Pipe and fittings.
The stability in the temperature of the fed oil to the reactor allowed to achieve an increment of 1.5% in the raw material yield which represents a benefit of 500,000 USD/year.
The required investment was 253,000 USD.
The project presented a TIR of 133% and a payback of 9 months.
Operation: Octuber 2001