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    • 1. 发明申请
    • MÉTODO E EQUIPAMENTO PARA RESFRIAR ÁCIDO SULFÚRICO
    • 方法与设备配置酷胺酸硫酸
    • WO2017143416A1
    • 2017-08-31
    • PCT/BR2016/050287
    • 2016-11-07
    • NC ENGENHARIA INDÚSTRIA E COMÉRCIO LTDA
    • CLARK, Nelson Perella
    • C01B17/76C01B17/765C01B17/80B01D53/50
    • B01D53/50C01B17/76C01B17/765C01B17/80Y02P20/124Y02P20/57
    • O presente resumo refere-se a pedido de patente de invenção para método e equipamento para resfriar soluções aquosas de ácido sul-fúrico (H2SO4), pertencente ao campo dos processos químicos, que faz parte de processo de produção de ácido sulfúrico por contato sem ou com recuperação de energia, que compreende, entre ou-tras: 1) - Etapa de absorção de SO3 que produz ácido sulfúrico con-centrado aquecido; e 2) – Etapa de resfriamento indireto do ácido quente; dito método compreende: o uso de fluído refrigerante inerte ao ácido sulfúrico; e a 2) Etapa de refriamento compreendida: por etapa de resfriamento indireto intermediária ácido fluído e - Segun-da etapa de resfriamento indireto fluído água ou fluído – 3º fluído, sendo que, quando o processo é de tipo com recuperação de ener-gia é prevista 3)- Etapa de recuperação de energia, geração de va-por; referida invenção compreende ainda equipamento que realiza o método, que funciona junto ao conjunto da torre de absorção de SO3 (1), compreendido por circuito de resfriamento de ácido (10) formado: por trocador de calor intermediário ácido-fluido (20) e se-gundo trocador de calor fluído-água (11) e, quando o processo é com recuperação de energia, dito equipamento prevê caldeira de geração de vapor (30).
    • 此摘要是指本发明MAKE-HANDS的应用中,Mé所有设备用于冷却溶液çõ含水ES A酸南Fú富(H2SO4) 属于流程曲&iacute领域;绢毛猴,这是生产&ccedil过程的一部分;&HAND的A酸磺酸ú富通过具有或不具有检索MAKE-HANDS,能量,其包括,在或-TRAS接触:1 ) - 步骤吸收MAKE-HANDS,其产生的SO 3 A&uacute磺酸;富含CON为中心的加热 和2) - 热酸的间接冷却步骤; 所述mé包括整体:使用感&iacute的惰性冷却剂A&uacute磺酸;富含; 从间接冷却步骤流感&iacute托里奥拉 - 电子;水或流感í间接冷却中介A的步骤将A酸流感&iacute的 - 3º:和2)refriamento步骤包括 流感与iacute;从,当进程é 与检索键入MAKE-手中,ENER-GYé 预期3) - 第一阶段&恢复ccedil;&atilde,能量生成çã所述VA-通过; 所述发明MAKE-HANDS,执行M&eacute进一步包括设备;所述SO 3(1)中,由A酸冷却回路包括:(10)形成&HAND;整体,沿整个吸湿&ccedil塔的运行:由 热交换器中介一条河流酸流体(20),并且是Gundo热交换器流感í做 - 水(11)中,并且当处理é 恢复MAKE-手中,能源,说设备分组ê &锅炉产生ccedil;&HAND的蒸气(30)

    • 5. 发明申请
    • PROCESS FOR PRODUCING SULFUR DIOXIDE AND SULFUR TRIOXIDE
    • 生产二氧化硫和三氧化硫的方法
    • WO2012096817A3
    • 2012-09-07
    • PCT/US2012020214
    • 2012-01-04
    • ALBEMARLE CORPHALL TYSON JSELZER JASON MVASAIWALA UTKARSH R
    • HALL TYSON JSELZER JASON MVASAIWALA UTKARSH R
    • C01B17/54B01J8/02C01B17/76
    • C01B17/74B01J2219/00006C01B17/54C01B17/76
    • SO3 is formed from a replenished circulating inventory of fresh and recycled SO2. Also, a feed stream of replenished SO2 is heated by indirect heat exchange with a hot stream of SO2 and SO3 whereby the hot stream is cooled for separating the two gases. The heated feed stream of replenished SO2 serves as a hot gaseous feed to a sulfur burner. This SO2 feed is divided into two feed streams, one being oxygenated with pure oxygen and the other remains as an SO2 feed. These feeds plus a feed of molten sulfur are concurrently and separately introduced into the sulfur burner where additional SO2 is formed via continuous exothermic reaction. Although heated, the oxygenated feed(s) of SO2 bring in the needed oxygen for the reaction and the feeds of the oxygenated and non-oxygenated SO2 serve as a heat sink in the sulfur burner to reduce the temperature therein.
    • SO3由新鲜和回收的SO2的补充循环库存形成。 而且,通过与热的SO 2和SO 3流进行间接热交换来加热补充SO 2的进料流,由此冷却热流以分离两种气体。 补充SO2的加热进料流用作硫燃烧器的热气态进料。 该SO2进料分为两种进料流,一种用纯氧气氧化,另一种作为SO2进料。 这些进料加上熔融硫的进料同时并分别引入硫燃烧器中,其中通过连续的放热反应形成另外的SO 2。 虽然加热,SO 2的含氧进料引起反应所需的氧气,并且含氧和非氧化SO 2的进料在硫燃烧器中用作散热器以降低其中的温度。
    • 7. 发明申请
    • SELECTIVE REMOVAL AND RECOVERY OF SULFUR DIOXIDE FROM EFFLUENT GASES USING ORGANIC PHOSPHOROUS SOLVENTS
    • 使用有机磷溶液从有利气体中选择性去除和回收二氧化硫
    • WO1998009713A1
    • 1998-03-12
    • PCT/US1997014283
    • 1997-08-12
    • MONSANTO COMPANY
    • MONSANTO COMPANYBURMASTER, Brian, M.McALISTER, Donald, R.
    • B01D53/50
    • B01D53/1481C01B17/60C01B17/76Y02A50/2348Y02A50/2349
    • A process for the selective removal and recovery of sulfur dioxide from effluent gases is disclosed. The sulfur dioxide is recovered in a sulfur dioxide absorption/desorption cycle which utilizes a liquid solvent to selectively absorb sulfur dioxide from the effluent gas. The liquid solvent comprises an organic phosphorous compound selected from phosphate triesters, phosphonate diesters, phosphinate monoesters and mixtures thereof. Preferably, the liquid solvent comprises phosphonate diesters of formula (I) wherein R , R and R are independently aryl or C1 to C8 alkyl. The organic phosphonate diesters are substantially water immiscible, the solubility of water in the organic phosphonate diester being less than about 10 weight percent at 25 DEG C, and have a vapor pressure less than about 1 Pa at 50 DEG C. In accordance with a preferred embodiment, the liquid solvent comprises dibutyl butyl phosphonate. The absorbed sulfur dioxide is subsequently stripped to regenerate the organic phosphorous solvent and produce a gas enriched in sulfur dioxide content. The sulfur dioxide-enriched gas may be used as part of the feed gas to a contact sulfuric acid plant or a Claus plant for the preparation of elemental sulfur or be cooled to condense sulfur dioxide in the form of a liquid product. The present invention is particularly useful in producing a sulfur dioxide-enriched gas from gases relatively weak in sulfur dioxide content.
    • 公开了从废气中选择性地除去和回收二氧化硫的方法。 在二氧化硫吸收/解吸循环中回收二氧化硫,其利用液体溶剂从废气中选择性地吸收二氧化硫。 液体溶剂包括选自磷酸三酯,膦酸二酯,次膦酸酯单酯及其混合物的有机磷化合物。 优选地,液体溶剂包括式(I)的膦酸二酯,其中R 1,R 2和R 3独立地为芳基或C 1至C 8烷基。 有机膦酸酯二酯基本上是水不混溶的,水在有机膦酸酯二酯中的溶解度在25℃下小于约10重量%,并且在50℃下具有小于约1Pa的蒸气压。根据优选的 液体溶剂包括丁基丁基膦酸二丁酯。 随后汽提吸收的二氧化硫以再生有机磷溶剂并产生富含二氧化硫含量的气体。 富含二氧化硫的气体可以作为进料气体的一部分用于接触硫酸设备或用于制备元素硫的克劳斯设备,或被冷却以冷凝液体产物形式的二氧化硫。 本发明特别可用于从二氧化硫含量相对较弱的气体制备富含二氧化硫的气体。
    • 8. 发明申请
    • SULFURIC ACID PROCESS AND APPARATUS
    • 硫酸工艺和装置
    • WO1989012024A1
    • 1989-12-14
    • PCT/DK1989000129
    • 1989-05-18
    • HALDOR TOPSOE A/SSCHOUBYE, Peter
    • HALDOR TOPSOE A/S
    • C01B17/80
    • B01D53/8609C01B17/76C01B17/806Y02C20/30
    • Flue gases etc. may contain SO2 which should be prevented from admission to the atmosphere. SO2 is oxidized to SO3 and condensed with steam to H2SO4-vapours which are condensed in vertical glass tubes cooled from the outside. In principle the condensate is collected near the bottom of the tubes. In the cooling process a mist of very small H2SO4 droplets is formed and tends to escape to the atmosphere. Environmental regulations continually increase the demands on reducing the amount of acid mist escaping. According to the invention an important method to achieve a reduction of the escape of acid mist is to pass the gas leaving each tube through an aerosol filter in gastight connection with the tube top. Such a filter may consist of acid resistant fibres or filaments having a thickness of 0.04-0.7 mm and may be arranged in specified manners to ensure a drop of pressure through below 20 mbar. Moreover, the sulfuric acid caught in the filter is caused to flow downwardly through the tube countercurrently with the feed gas. Various embodiments of filters and filter media for the purpose are disclosed. The sulfuric acid recovered is highly pure and highly concentrated.
    • 9. 发明申请
    • A METHOD IN THE MANUFACTURE OF SULPHURIC ACID FROM GASES GENERATED IN DISCONTINUOUS PROCESSES
    • 在不连续过程中产生的气体制备硫酸的方法
    • WO1983001438A1
    • 1983-04-28
    • PCT/SE1982000344
    • 1982-10-22
    • BOLIDEN AKTIEBOLAG
    • BOLIDEN AKTIEBOLAGPETERSSON, Stig, Arvid
    • C01B17/76
    • C01B17/76
    • Method of utilizing process gas containing sulphur dioxide obtained from discontinuous processes, in the manufacture of sulphuric acid in a contact plant. When practicing the method according to the invention, all of the process gas, or a predetermined amount thereof, is withdrawn from the process during process operational periods, in which gas containing sulphur dioxide is generated, and the sulphur dioxide contained by the withdrawn gas is at least partially separated therefrom to form a liquid phase containing the amount of sulphur dioxide separated. The gas partially freed from sulphur dioxide, together with any non-withdrawn process gas, is passed to the contact plant for manufacturing sulphuric acid. Stored absorption liquid is utilized during those periods in which no process gases are produced or passed to the contact plant or in which the process gases contain insufficient sulphur dioxide. Sulphur dioxide is stripped from the liquid phase with the aid of a carrier gas, and the carrier gas, together with the stripped sulphur dioxide, is passed to the contact plant. This enables a required amount of gas and sulphur dioxide to be constantly supplied to the contact plant, even during those periods when the discontinuous process does not produce a sulphur-dioxide-containing gas or produce a gas having an insufficiently high sulphur-dioxide amount.
    • 使用从不连续工艺获得的含有二氧化硫的工艺气体在接触工厂中制造硫酸的方法。 当实施本发明的方法时,在生产含二氧化硫的气体的过程操作期间将所有的工艺气体或其预定量从工艺中取出,并且被排出的气体所含的二氧化硫是 至少部分地分离,形成含有分离的二氧化硫量的液相。 将部分不含二氧化硫的气体连同任何未抽出的工艺气体一起通入用于制造硫酸的接触设备。 在没有工艺气体生产或通过接触设备或其中工艺气体含有不足的二氧化硫的那些时期使用储存的吸收液体。 借助载气将二氧化硫从液相中汽提,并将载气与汽提的二氧化硫一起送至接触装置。 这使得即使在不连续过程不产生含二氧化硫的气体或产生二氧化硫含量不足的气体的那些时期,也能够将所需量的气体和二氧化硫持续供给到接触设备。