Fermentadores industriales

ADVANCED PROCESS CONTROL: FERMENTERS_________________________FERMENTATION

Fermentation is a process by which chemical reactions occur due to the presence of microorganisms or enzymes. It is a process that breaks down molecules to transform them into simpler molecules.

In industrial processes, the fermentations are carried out in a reactor which is known as FERMENTER.

PARTS OF A FERMENTER

TYPES OF FERMENTERS

CONTINUOUSFED-BATCH BATCHFACTORS INFLUENCING FERMENTATIONOxygen: Controls the transfer rate and the resistance at the interface between the gas bubble and the liquid.Temperature: Fermentation must to be carried out at narrow temperature range and ideally constant.pH: It has to be controled by a cultive medium and adding an acid or base as needed to maintain constant pH.

WHY ADVANCED CONTROL IN FERMENTERS?Improve yield efficiency.The complex mechanisms ruling this processes sometimes are not adequately understood.Some methods do not require any prior knowledge about the structure of the relationships that exist between important variables.Positively involved in the process dynamics allowing the system to remain stable.

RATIO CONTROL___________________________________

RATIO CONTROL___________________________________

System ratio ControlBlock DiagramMULTI-OBJETIVE CASCADE CONTROLER FOR AN ANAEROBIC DIGESTER____________________________________________In this work, a new multi-objective control strategy based on the concentration of volatile fatty acids in the effluent and the methane flow rate has been proposed for an upflow sludge bed-filter reactor, which is used in the anaerobic treatment of winery wastewater.

MULTI-OBJETIVE CASCADE CONTROLER FOR AN ANAEROBIC DIGESTER____________________________________________System cascade Control

MULTI-OBJETIVE CASCADE CONTROLER FOR AN ANAEROBIC DIGESTER____________________________________________Block DiagramADVANCED CONTROLLING OF ANAEROBIC DIGESTION BY MEANS OFHIERARCHICAL NEURAL NETWORKS________________________________________________In this work several feed-forward back propagation neural networks (FFBP) were trained in order to model, and subsequently control, methane production in anaerobic digesters. To find out which is the best feeding profile for the next time steps in advance

ADVANCED CONTROLLING OF ANAEROBIC DIGESTION BY MEANS OFHIERARCHICAL NEURAL NETWORKS________________________________________________System neural networks Control

ADVANCED CONTROLLING OF ANAEROBIC DIGESTION BY MEANS OFHIERARCHICAL NEURAL NETWORKS________________________________________________Block DiagramTHANKS!