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1. 发明授权

EP0597952B1 POLYMERIZATION REACTOR 有权
标题翻译： POLYMERISATIONSREAKTOR
公开(公告)号：EP0597952B1
公开(公告)日：1997-04-23
申请号：EP92916645.2
申请日：1992-07-17
申请人： EXXON CHEMICAL PATENTS INC.
发明人： MCDONALD, Michael, Francis, Jr. , LAWRENCE, David, John Wingfield , WILLIAMS, Donald, Anderson Camelot Noads Way
IPC分类号： C08F210/12 , C08F4/14 , B01J19/18
CPC分类号： F28F13/06 , B01F7/00591 , B01F7/22 , B01J19/0013 , B01J19/1875 , B01J2219/00085 , C08F210/12 , C08F4/005
摘要： A novel chemical reactor; one particularly useful for the production of polymers, especially elastomers such as butyl rubber. The reactor (10) contains (1) a two-tube pass system, constituted of an inner or center tube bundle (20) through which a mixture or slurry of polymerizable monomers and catalyst is passed in one direction, and recycled via an outer tube bundle (30) in the opposite direction in essentially even flow distribution (2), while the tubes of the center and outer tubular bundles are maintained within a jacketed section, or sections of the reactor into which a coolant, or refrigerant, is injected and vaporized to remove the heat of reaction. The coolant, or refrigerant, in heat exchange relationship with the tubes removes the exothermic heats of reaction from the polymerization mixture, and maintains the polymerization mixture at uniformly low temperature. An even flow circulation of the slurry which aids in maintaining uniform low temperature, is provided by the use of (3) a diffuser (60) and (4) mixed flow pumping system (40), with its impeller (43), by virtue of which an adequate pressure head of even pressure profile is developed across the entry sides of the center tubes (20) to maintain the even flow distribution within the two-tube pass system at high circulation rate. There is no vortex whirl at the exit of the impeller-diffuser assembly, and no cavitation bubbles as commonly associated with one-tube pass systems, which employ a central draft tube and axial flow pump. Improved mixing, high hydraulic efficiency, and higher production rates with low polymer fouling, are achieved.

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