Particle segregation is a common problem in many bulk storage systems and its presence creates serious quality control problems. This exclusive contribution from Diamondback Technology discusses the do's and dont's of particle segregation.
Market forecasts for bioproducts are upbeat. One even predicts that industrial biotechnology will be a $160 billion global business by 2010. Industrial biotechnology first took off in the early 1980s; what gives today's activity a buzz of excitement is the repeat of something else from that era: high energy prices.
Install a flow meter in the recycle, cascade the flow set point with a pressure control loop. With proper tuning, the valve characteristics are lost in the flow control loop, which should be tuned fast with PI.