Abstract: A removable, reusable, pleated woven wire filter comprising: (a) a stainless steel perforated core having one-half-inch stainless steel round bar reinforcement rings welded to one-half-inch stainless steel round bar cross bars to create bar-ring junctures, and having 11-gauge stainless steel attachment clips welded to each end of the perforated core; (b) a three-layer stainless steel pleated woven wire filter media wrapped around the perforated core, the filter media having spaced apart pleats with external peaks, and an external filter media surface comprising the external peaks of the pleats; (c) a stainless steel flattened expanded metal shroud adjacent to and encircling the external peaks, and (d) a stainless steel top end cap base and a stainless steel bottom end cap base connected to the metal shroud, both cap bases sealed against top and bottom ends of the filter media with a stainless steel adhesive sealant rated at 2,000 degrees Fahrenheit.

Abstract: A removable, reusable, pleated woven wire filter comprising: (a) a stainless steel perforated core having one-half-inch stainless steel round bar reinforcement rings welded to one-half-inch stainless steel round bar cross bars to create bar-ring junctures, and having 11-gauge stainless steel attachment clips welded to each end of the perforated core; (b) a three-layer stainless steel pleated woven wire filter media wrapped around the perforated core, the filter media having spaced apart pleats with external peaks, and an external filter media surface comprising the external peaks of the pleats; (c) a stainless steel flattened expanded metal shroud adjacent to and encircling the external peaks, and (d) a stainless steel top end cap base and a stainless steel bottom end cap base connected to the metal shroud, both cap bases sealed against top and bottom ends of the filter media with a stainless steel adhesive sealant rated at 2,000 degrees Fahrenheit.

Abstract: A removable, reusable, pleated woven wire filter for removing particulate material from a heavy coker gas oil process stream. The filter comprises: (a) a perforated core; (b) a pleated woven wire filter media wrapped around the perforated core, the filter media having spaced apart pleats and an external filter media surface comprising the external peaks of the pleats; (c) a stainless steel flattened expanded metal shroud adjacent to and encircling the external peaks; and (d) top and bottom end caps connected to the stainless steel flattened expanded metal shroud, and sealed against top and bottom ends of the filter media with a stainless steel adhesive sealant rated at 2,000 degrees Fahrenheit. The process stream operates between 300 and 800 degrees Fahrenheit, and between 150 psig and 500 psig. The filter can withstand a backwash purge pressure from 100 psig to 200 psig.

Abstract: A pleated woven wire filter for use in a process vessel of a given process includes: a) a perforated core; b) a pleated woven wire filter media wrapped around the perforated core, the filter media having spaced apart pleats and an external filter media surface comprising the external peaks of the pleats; c) horizontal bands adjacent to and encircling the external peaks, the horizontal bands spaced apart and welded to vertical supports; and d) top and bottom end caps connected to the vertical supports, and sealed against top and bottom ends of the filter media with Vermiculite-coated fiberglass felt gaskets. In another feature of the invention, a required square footage of filter media, determined by flow rate calculations for the given process, is divided by a number between 33 and 34 to determine the inside diameter of the perforated core.