APPARATUS & PROCESS FOR HEAT EXCHANGE WITH FLUID BEDS

• Main Authors: BRISTOW, TIMOTHY CRISPIN, NEWTON, DAVID, BECKER, STANLEY JOHN, FIORENTINO, MICHELE, WILLIAMS, BRUCE LEO
• Format: Patent
• Language: English
• Published: 31.01.2008
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GENERAL METHODS OF ORGANIC CHEMISTRY; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; OPEN SINTERING OR LIKE APPARATUS; ORGANIC CHEMISTRY; OVENS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; RETORTS; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS

APPRATUS AND PROCESS FOR HEAT EXCHANGE WITH FLUID BEDS COMPRISES HEAT-EXCHANGE TUBES LOCATED LONGITUDINALLY WITH RESPECT TO THE AXIS OF A FLUIDISATION ZONE WITH A RECTANGULAR PITCH,ONE SIDE OF WHICH HAVING A LENGTH AT LEAST ONE AND A HALF TIMES THE LENGTH OF THE OTHER SIDE AND/OR WITH A TRIANGULAR PITCH,HAVING TWO SIDES EACH AT LEAT ONE AND A HALF TOMES THE LENGTH OF THE SHORTEST SIDE REDUCES THE IMPACT OF THE HEAT-EXCHANAGE TUBES ON THE FLUIDISITION CHARACTERISTICS OF THE FLUID BED.THE INVENTION OS PHARTICULARLY SUITABLE FOR OXIDATION REACTION USING MOLECULAR OXYGEN-COINTENING GAS IN THE PRESENCE OF A FLUID BED OF FLUIDISABLE CATALYST,SUCH AS (A) THE ACETIXYLATION OF OLEFINS,(B) THE OXIDATION OF ETHYLENE TO EXYTIC ACID AND/OR THE OXIDATION OF ETHANE TO ETHYLENE AND/OR ACETIC ,(C) THE AMMOXIDATION OF PROPYLENE AND /OR PROPANE TO ACRYLONITRILE AND (D) THE OXIDATION OF C4'S TO MALEIC ANHYDRIDE.