VERSATILITY OF THE MULTIMODE POROUS METAL FILTERIN OPTIMIZING SOLIDS/LIQUID FILTRATION PERFORMANCE

摘要

The multimode porous metal filter offers the user significant operational versatility anddesign alternatives that are required in a myriad of process operations,thereby resulting inimproved net filtration efficiency. Process data are compared to pressure filtration techniquesused in standard candle filter and the inside-out filter arrangement. There are two methods ofoperating: 1.) Static or barrier type filtration and 2.) Dynamic or crossflow type filtration.The variations exist primarily in the method of backwash or blowdown,and secondarily inthe method of feeding and concentrating. The multimode filter can be operated as a lightsolid polishing filter where liquid clarification is the objective,to a high solids recovery filterof catalyst or product solids.This paper will emphasize the importance of feasibility testing,beginning with simple leaftests to qualify media and determine filtration characteristics,to progressing to moreadvanced pilot testing to verify filter operating parameters fo r scale up design. Filter sizingwill have a direct impact on both capital and operating costs.