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公开(公告)号：EP0189285A3
公开(公告)日：1988-01-07
申请号：EP86300296
申请日：1986-01-17
申请人： C-I-L Inc.
IPC分类号： C01B17/74 , C07C139/06
CPC分类号： C01B17/74
摘要： A continuous process for the generation of sulphur trioxide from oleum suitable for use in the sulphonation of organic compounds which comprises continuously introducing oleum feed to a sulphur trioxide desorption tower; continuously introducing a dry feed airstream comprising recycled dry feed air stream to the desorption tower, whereby a gaseous mixture of sulphur trioxide in air is produced; collecting spent oleum from the desorption tower; introducing the gaseous mixture to a sulphpnation reactor; and recycling spent gaseous mixture from the reactor to the desorption tower as recycled feed air. The process offers reduced environmental pollution and operating costs.
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公开(公告)号：EP0151010B1
公开(公告)日：1988-09-21
申请号：EP85300537.9
申请日：1985-01-25
申请人： C-I-L Inc.
CPC分类号： C01B17/88
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3.发明公开Apparatus and process for the concentration of sulphuric acid 失效Vorrichtung und Verfahren zum Konzentrieren vonSchwefelsäure。
公开(公告)号：EP0151010A2
公开(公告)日：1985-08-07
申请号：EP85300537.9
申请日：1985-01-25
申请人： C-I-L Inc.
CPC分类号： C01B17/88
摘要： The present invention provides a process for producing concentrated sulphuric acid from a hot gas stream comprising water and sulphuric trioxide which process comprises feeding a first portion of said gas stream through a first sulphur trioxide absorption zone and a second portion through a second sulphur trioxide absorption zone; feeding a recycled sulphuric acid stream to said first sulphur trioxide absorption zone whereby substantially all of the sulphur trioxide and sulphuric acid are removed from said first portion of said gas stream to produce an enlarged sulphuric acid stream; recycling a first portion of said enlarged sulphuric acid stream through said first sulphur trioxide absorption zone; feeding a second portion of said enlarged sulphuric acid stream to said second sulphur trioxide absorption zone; and collecting sulphuric acid product from said second sulphur trioxide absorption zone; wherein the ratio of gases to sulphuric acid in said second sulphur trioxide absorption zone is such that the sulphuric acid product leaving said zone is of the desired concentration to a maximum of the azeotropic concentration. The present invention also provides apparatus for performing such a process.
摘要翻译： 本发明提供了一种从包含水和硫酸三氧化硫的热气流中生产浓硫酸的方法，该方法包括将第一部分所述气流通过第一三氧化硫吸收区和第二部分通过第二硫氧化物吸收区 ; 将再循环的硫酸料流输送到所述第一三氧化硫吸收区，从而从所述气流的所述第一部分中除去三氧化硫和硫酸，从而产生增大的硫酸料流; 将所述扩大的硫酸流的第一部分再循环通过所述第一三氧化硫吸收区; 将所述扩大的硫酸流的第二部分进料到所述第二硫氧化物吸收区; 并从所述第二硫氧化物吸收区收集硫酸产物; 其中所述第二硫酸三氧化物吸收区中的气体与硫酸的比例使得离开所述区的硫酸产物具有达到最大共沸浓度的所需浓度。 本发明还提供了用于执行这种处理的装置。
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公开(公告)号：EP0224340B1
公开(公告)日：1990-06-13
申请号：EP86308428.1
申请日：1986-10-29
申请人： C-I-L Inc.
IPC分类号： C01B17/80
CPC分类号： B01D53/507 , C01B17/806
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公开(公告)号：EP0230739B1
公开(公告)日：1990-04-04
申请号：EP86309626.9
申请日：1986-12-10
申请人： C-I-L INC.
IPC分类号： C01B17/80
CPC分类号： C01B17/806
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6.发明公开
公开(公告)号：EP0224340A1
公开(公告)日：1987-06-03
申请号：EP86308428.1
申请日：1986-10-29
申请人： C-I-L Inc.
IPC分类号： C01B17/80
CPC分类号： B01D53/507 , C01B17/806
摘要： An absorption tower for absorbing sulphur trioxide in sulphuric acid having a spray chamber wherein a major portion of sulphur trioxide is absorbed by a sulphuric acid spray and a packed absorption zone wherein remaining sulphur trioxide is absorbed into sulphuric acid. The spray chamber is optionally provided externally of the tower. Tower provides improved heat transfer and reduced corrosion within the tower.
摘要翻译： 一种用于吸收硫酸中的三氧化硫的吸收塔，其具有喷雾室，其中主要部分的三氧化硫被硫酸喷雾吸收，并且其中剩余的三氧化硫被吸收到硫酸中的填充吸收区。 喷雾室可选地设置在塔的外部。 塔提供改进的传热和降低塔内的腐蚀。
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7.发明公开Combined sulphur burning furnace and boiler 失效Mit einem Heizkessel kombinierter Schwefelverbrennungsofen。
公开(公告)号：EP0247256A1
公开(公告)日：1987-12-02
申请号：EP86304026.7
申请日：1986-05-27
申请人： C-I-L Inc.
CPC分类号： F22B21/002 , C01B17/54 , F22B21/06 , F23M5/00
摘要： A combined sulphur burning furnace and water-cooled boiler arrangement for producing a cooled, gaseous sulphur dioxide-air mixture in which the furnace (14) is located below the boiler tubes arrangement (25) in a vertical, cylindrical shell (11). The hot gases produced in the furnace exit axially (17) into an upper chamber (28) defined by the water-tube arrangement (25) and pass through the cooling water-tube arrangement in radial outward flow to an outer chamber (25) provided with cold-side by-pass control means (32) and then exit the shell (33). The apparatus provides for savings in ducting, foundations, piping and the like; and permits more efficient sulphur burning and cooling.
摘要翻译： 一种用于生产冷却的气态二氧化硫 - 空气混合物的组合硫燃烧炉和水冷锅炉装置，其中炉（14）位于垂直圆柱形壳体（11）内的锅炉管装置（25）下方。 炉内产生的热气体轴向（17）排出到由水管装置（25）限定的上部腔室（28）中，并以径向向外的流动方式穿过冷却水管装置到外部室（25） 用冷侧旁路控制装置（32），然后退出外壳（33）。 该设备可节省管道，地基，管道等; 并允许更有效的硫燃烧和冷却。
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公开(公告)号：EP0151010A3
公开(公告)日：1987-01-14
申请号：EP85300537
申请日：1985-01-25
申请人： C-I-L Inc.
CPC分类号： C01B17/88
摘要： The present invention provides a process for producing concentrated sulphuric acid from a hot gas stream comprising water and sulphuric trioxide which process comprises feeding a first portion of said gas stream through a first sulphur trioxide absorption zone and a second portion through a second sulphur trioxide absorption zone; feeding a recycled sulphuric acid stream to said first sulphur trioxide absorption zone whereby substantially all of the sulphur trioxide and sulphuric acid are removed from said first portion of said gas stream to produce an enlarged sulphuric acid stream; recycling a first portion of said enlarged sulphuric acid stream through said first sulphur trioxide absorption zone; feeding a second portion of said enlarged sulphuric acid stream to said second sulphur trioxide absorption zone; and collecting sulphuric acid product from said second sulphur trioxide absorption zone; wherein the ratio of gases to sulphuric acid in said second sulphur trioxide absorption zone is such that the sulphuric acid product leaving said zone is of the desired concentration to a maximum of the azeotropic concentration. The present invention also provides apparatus for performing such a process.
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公开(公告)号：EP0214734A3
公开(公告)日：1988-06-22
申请号：EP86305654
申请日：1986-07-23
申请人： C-I-L Inc.
IPC分类号： C01B17/765
CPC分类号： C01B17/7655
摘要： In a system using the double absorption process for sulphuric acid manufacture, a single acid circulation system and a single cooler are employed. Acid from the exit of the air drying tower and final absorber tower are mixed in a common reservoir, while acid from intermediate absorber tower is discharged to a separate reservoir. Acid from the common reservoir is split between the intermediate and final absorber towers and product line. Acid from the separate reservoir is cooled and split between the drying tower and intermediate absorber tower. The circulation arrangement reduces the cooling to one relatively high temperature location and simplifies acid strength and level control. Only half of the bulk of the circulating acid has to be cooled and the effect of seasonal fluctuating temperatures in the drying tower is minimized.
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公开(公告)号：EP0230739A1
公开(公告)日：1987-08-05
申请号：EP86309626.9
申请日：1986-12-10
申请人： C-I-L INC.
IPC分类号： C01B17/80
CPC分类号： C01B17/806
摘要： An absorption tower for absorbing sulphur trioxide in sulphuric acid having distinct upper and lower packed absorption zones wherein substantially all of the sulphur trioxide is absorbed by the sulphuric acid in the lower zone, while in the upper zone the depleted gas stream is significantly cooled. The two zones receive feed acids of different temperatures and different acid irrigation rates. The tower allows of improved energy recovery while providing for environmentally acceptable emission standards.
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