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公开(公告)号：US4999452A
公开(公告)日：1991-03-12
申请号：US351479
申请日：1989-05-15
申请人： Donald L. Bunning , William G. Etzkorn , William M. Haydon , Gordon G. Harkreader , Jonathan J. Kurland , Wai C. Liu , Ernesto Vera-Castaneda
发明人： Donald L. Bunning , William G. Etzkorn , William M. Haydon , Gordon G. Harkreader , Jonathan J. Kurland , Wai C. Liu , Ernesto Vera-Castaneda
摘要： A process for producing acrylic ester by the catalytic esterification of a crude liquid stream of enriched acrylic acid recovered by the partial condensation of the reaction gas effluent from the catalytic oxidation of propylene and/or acrolein. The partial condensation allows a significant proportion of volatile aldehydes and water to pass through the first recovery stage to a second stage for conventional recovery, along with uncondensed acrylic acid vapors and the remainder of the uncondensed reaction gases.
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公开(公告)号：US4740272A
公开(公告)日：1988-04-26
申请号：US32259
申请日：1987-03-31
申请人： Ernesto Vera-Castaneda , Diane A. Montevideo , David J. Miller , John E. Logsdon , David R. Bryant
发明人： Ernesto Vera-Castaneda , Diane A. Montevideo , David J. Miller , John E. Logsdon , David R. Bryant
CPC分类号： C07C51/56 , C07C67/54 , Y10S203/20
摘要： A method of producing substantially pure dialkyl maleate by separating monoalkyl maleate from dialkyl maleate in a short residence time distillation zone while minimizing reversion of the monoalkyl maleate to alkanol and maleic anhydride and without having to neutralize the monoalkyl maleate.
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公开(公告)号：US20130115159A1
公开(公告)日：2013-05-09
申请号：US13574023
申请日：2011-01-20
IPC分类号： C01B17/775
CPC分类号： C01B17/74 , C01B17/7655 , C01B17/775 , Y02P20/124 , Y02P20/129 , Y10T137/0402
摘要： This invention relates to the recovery of energy in the manufacture of sulfuric acid, and more particularly to enhanced recovery of energy from the absorption of wet SO3 in sulfuric acid. The invention is further directed to control of mist formation during SO3 absorption, and of the sulfuric acid mist content of the gas stream leaving the SO3 absorption step in a process wherein SO3 absorption energy is recovered from absorption acid in useful form.
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公开(公告)号：US4886919A
公开(公告)日：1989-12-12
申请号：US125222
申请日：1987-11-25
IPC分类号： C07B61/00 , B01J23/80 , C07C27/00 , C07C27/02 , C07C29/17 , C07C31/02 , C07C31/125 , C07C31/135 , C07C33/18 , C07C33/20 , C07C33/24 , C07C67/00
CPC分类号： C07C29/172 , Y02P20/582
摘要： A process for the gas phase hydrogenation of unsaturated trisubstituted monoesters to the saturated trisubstituted alcohols using a Zn.sub.a Cu.sub.b X.sub.c Ni.sub.d O.sub.e reduced catalyst.
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公开(公告)号：US10272380B2
公开(公告)日：2019-04-30
申请号：US13283671
申请日：2011-10-28
摘要： This invention relates to processes for selective removal of contaminants from effluent gases. A sulfur dioxide absorption/desorption process for selective removal and recovery of sulfur dioxide from effluent gases utilizes a buffered aqueous absorption solution comprising weak inorganic or organic acids or salts thereof, to selectively absorb sulfur dioxide from the effluent gas. Absorbed sulfur dioxide is subsequently stripped to regenerate the absorption solution and produce a sulfur dioxide-enriched gas. A process for simultaneous removal of sulfur dioxide and nitrogen oxides (NOx) from effluent gases and recovery of sulfur dioxide utilizes a buffered aqueous absorption solution including a metal chelate to absorb sulfur dioxide and NOx from the gas and subsequently reducing absorbed NOx to form nitrogen. A process to control sulfate salt contaminant concentration in the absorption solution involves partial crystallization and removal of sulfate salt crystals.
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公开(公告)号：US08586001B2
公开(公告)日：2013-11-19
申请号：US13574023
申请日：2011-01-20
IPC分类号： C01B17/74 , C01B17/765
CPC分类号： C01B17/74 , C01B17/7655 , C01B17/775 , Y02P20/124 , Y02P20/129 , Y10T137/0402
摘要： This invention relates to the recovery of energy in the manufacture of sulfuric acid, and more particularly to enhanced recovery of energy from the absorption of wet SO3 in sulfuric acid. The invention is further directed to control of mist formation during SO3 absorption, and of the sulfuric acid mist content of the gas stream leaving the SO3 absorption step in a process wherein SO3 absorption energy is recovered from absorption acid in useful form.
摘要翻译： 本发明涉及硫酸制造中的能量回收，更具体地说，涉及在硫酸中吸收湿SO 3的能量回收。 本发明进一步涉及在SO 3吸收期间控制雾形成和在离开SO 3吸收步骤的气流中的硫酸雾含量在其中SO 3吸收能量从有用形式的吸收酸中回收的方法中。
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