Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including heat exchanger for reaction chamber or reactants...
Patent
1995-10-30
1997-10-21
Bhat, Nina
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including heat exchanger for reaction chamber or reactants...
422192, 422194, 422212, 202158, 203DIG6, 2611141, 568727, B01D 322, B01D 338, B01D 340, C07C 3700
Patent
active
056793120
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The present invention pertains to a novel reactive stripping process for carrying out chemical reactions in a suspended bed reactor column. In a further aspect, the present invention relates to a novel reactive stripping apparatus for simultaneously performing chemical reactions and reaction product stripping which comprises a plurality of suspended beds. In another aspect, the present invention is directed to a novel process and apparatus for performing simultaneously heterogeneous catalysis and separation or stripping of at least one reaction product from the reaction mixture in a substantially vertical, multiple stage reactive stripping arrangement comprising a plurality of suspended beds which have particulate catalyst supported thereon.
More specifically, the present invention is concerned with a novel process and apparatus for the production of bisphenol-A in a substantially vertical, multiple stage reactive stripping arrangement comprising a plurality of suspended beds which have a particulate solid modified cation-exchange resin catalyst supported thereon whereby successive treatments are substantially simplified, the recycle amount of unreacted reactants is reduced to a great extent and expenditure of capital on equipment and operational costs are decreased greatly.
BACKGROUND ART OF THE INVENTION
It is always an object of industrialization to continuously carry out chemical reactions and to obtain excellent conversion of reactants. To continuously perform many chemical reactions which are reversible or easily achieve reaction equilibrium under practical and economic reaction conditions, it is required to separate the reactants from the reaction products since separation of at least a part of the reaction products form the reaction mixture will allow the chemical reactions to proceed further. As a result, the yield of the desired products is improved according to reaction kinetics. However, great difficulty is usually encountered in trying to continuously remove at least one reaction production, such as, for example, in the preparation of 2,2-bis(4-hydroxyphenyl)propane (bisphenol-A, hereinafter sometimes referred to as "4,4-BPA" or "p,p-BPA" or simply identified as "BPA") which is a basic feedstock or intermediate product for the commercial manufacture of various polymers including the polyarylates, polyamides, polyetherimides, polysulfones and polycarbonates, etc., epoxy resins and modified phenol-formaldehyde resins, etc.
Heretofore, a variety of solutions or proposals have been provided to overcome the difficulty in separating reactants from reaction products while carrying out reactions such as condensation reactions, etherification reactions, amination reactions and saponification reactions, etc. In this respect, it is well known to employ distillation reactor systems such as, for example those as described in U.S. Pat. Nos. 4,471,154 and 5,133,942, etc.
These known distillation reactor systems are conventionally used such that chemical reactions are carried out while the reactants are extremely rapidly separated from the reaction products by fractional distillation because of differences in boiling points thereby allowing the chemical reactions to quickly proceed further as desired. Usually, the known distillation reactor systems are used to carry out heterogenous catalytic chemical reactions in a liquid phase in the presence of a particulate catalyst. In this case, the catalyst particles are completely submerged in the liquid phase under static state to form a fixed bed reactor system or are suspended in the liquid phase by agitation action of a gas to form a suspended bed reactor system.
More particularly, U.S. Pat. NO. 4,215,011 to Lawrence A. Smith, Jr. discloses a catalyst system for use in a reaction-distillation column comprising a plurality of closed cloth pockets containing a particulate catalytic material arranged and supported in said reaction-distillation column by a wire mesh that is intimately associated with said closed cloth pockets. This
REFERENCES:
patent: 1782862 (1930-11-01), Wagner
patent: 3760006 (1973-09-01), Gammill et al.
patent: 3802567 (1974-04-01), Kunz
patent: 3849076 (1974-11-01), Gryaznov et al.
patent: 3853929 (1974-12-01), Cornelius et al.
patent: 4045379 (1977-08-01), Kwantes et al.
patent: 4051020 (1977-09-01), McDonald
patent: 4096616 (1978-06-01), Coffinberry
patent: 4124069 (1978-11-01), Becker
patent: 4307254 (1981-12-01), Smith, Jr.
patent: 4343354 (1982-08-01), Weber
patent: 4351966 (1982-09-01), Flock
patent: 4400555 (1983-08-01), Mendiratta
patent: 4471154 (1984-09-01), Franklin
patent: 4536373 (1985-08-01), Jones, Jr.
patent: 4595704 (1986-06-01), Fazio
patent: 4624748 (1986-11-01), Haunschild
patent: 4719968 (1988-01-01), Speros
patent: 4766254 (1988-08-01), Faler et al.
patent: 4798654 (1989-01-01), Iimura et al.
patent: 4820740 (1989-04-01), Li
patent: 4840228 (1989-06-01), Shaner
patent: 4877087 (1989-10-01), Hill
patent: 4917769 (1990-04-01), Van Horn
patent: 4918245 (1990-04-01), Iimuro et al.
patent: 4919245 (1990-04-01), Braden
patent: 4937051 (1990-06-01), Graven et al.
patent: 4942265 (1990-07-01), Iimuro et al.
patent: 4950804 (1990-08-01), Iimuro et al.
patent: 4950806 (1990-08-01), Iimuro et al.
patent: 4954661 (1990-09-01), Iimuro et al.
patent: 4971139 (1990-11-01), Khattar
patent: 5013407 (1991-05-01), Nocca et al.
patent: 5026459 (1991-06-01), Quang et al.
patent: 5075511 (1991-12-01), Li
patent: 5087767 (1992-02-01), Okamoto et al.
patent: 5130102 (1992-07-01), Jones, Jr.
patent: 5133942 (1992-07-01), Jones
patent: 5158754 (1992-10-01), Lefers et al.
patent: 5184675 (1993-02-01), Gardner
patent: 5198591 (1993-03-01), Kiedik et al.
patent: 5277847 (1994-01-01), Gentry et al.
patent: 5291989 (1994-03-01), Pinaire et al.
patent: 5338517 (1994-08-01), Evans, III et al.
patent: 5372790 (1994-12-01), Shirtum et al.
patent: 5447609 (1995-09-01), Yeoman et al.
patent: 5510089 (1996-04-01), Jones
International Search Report for PCT/CN94/00012.
Oct. 10, 1996 European Examination Report for EP 94 907 484.3.
Jin Shiyi
Lu Huisheng
Wang Lianshun
Yin Jinzhu
Yuan Jitang
Bhat Nina
China Petro-Chemical Corporation
Tianjin University
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