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公开(公告)号：US20240343577A1
公开(公告)日：2024-10-17
申请号：US18292096
申请日：2022-08-25
CPC分类号： C01B21/46 , B01D53/002 , B01D53/1456 , B01D53/1493 , B01D53/18 , C01B21/28 , F28C1/08 , B01D2252/103 , B01D2257/404 , B01D2258/02
摘要： A production plant for producing nitric acid at reduced power, the system being derived from a state-of-the art dual pressure nitric acid plant wherein the system further includes a first feature for splitting a tail gas stream into a first tail gas stream in fluid communication with compressed air and with an oxygen-rich gas and a second tail gas stream, and/or a feature for splitting a tail gas stream into a third tail gas stream in fluid communication with compressed air and with an oxygen-rich gas and a fourth tail gas stream. The production plant allows for reduction of power by the air compressor. A method for operating the system, the use of the system for performing the method, and a method for revamping a state-of-the-art dual pressure nitric acid plant into the system.
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公开(公告)号：US20240228284A1
公开(公告)日：2024-07-11
申请号：US18559214
申请日：2022-05-25
发明人： Ronald RÖSLER , André DE SMET
CPC分类号： C01B21/46 , B01D19/0036 , C01B21/28
摘要： A system for evacuating NOx gases from a nitric acid storage tank in a nitric acid production plant. The production plant includes a gas ejector with at least two gas inlets and at least one gas outlet, wherein a first gas inlet is branched from a gas conduit through which NOx-containing gas is flowing at a pressure P1 ranging from 2 to 16 bar; a second gas inlet is fluidically connected to the nitric acid storage tank essentially maintained at atmospheric pressure; and a gas outlet is fluidically connected to a gas conduit through which NOx-containing gas is flowing at a pressure P2 lower than P1. A method for evacuating NOx gases from a nitric acid storage tank, a method for revamping a system of a nitric acid plant, and the use of a gas ejector for evacuating NOx gases from a nitric acid storage tank in a production plant.
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公开(公告)号：US20180305210A1
公开(公告)日：2018-10-25
申请号：US15779347
申请日：2016-11-18
申请人： BASF SE
发明人： Gerhard OLBERT , Jochen GAUER , Holger FRIEDRICH , Andreas SPIEGEL , Andreas WÖLFERT , Wolfgang GMEINER , Michael LORENZ
CPC分类号： C01B21/28 , B01J10/007 , B01J19/2485 , C01B21/26 , C01B21/38
摘要： The present invention relates to a reactor R with apparatus D, the latter comprising a gas- and/or liquid-permeable tray B, in the edge region of which there is disposed a lateral boundary W which fully encloses the tray B and forms a volume V comprising catalytic and/or noncatalytic shaped bodies (F), wherein there is at least one braid made of precious metal and/or base metal on the upstream side opposite the tray B, and the catalytic and/or noncatalytic shaped bodies (F) are selected from (i) shaped bodies (F1) in the form of straight prisms, the footprint of which is selected from triangle, rectangle, hexagon or fragments of these polygons, and (ii) a combination of the shaped bodies (F1) with shaped bodies (F2) that are smaller than the shaped bodies (F1), wherein groups of m to n shaped bodies (F1), m and n being an integer from 3 to 30 with n>m, are framed in a metal cassette open in the upstream direction and closed in the downstream direction by a gas-permeable tray, in a virtually seamless manner with side face to side face and with their longitudinal axis aligned in vertical direction, virtually completely covering the cross section of the tray, to form modules (M), and the modules (M), optionally with cooperation of a joint filler material, with vertical alignment of the longitudinal axis of the shaped bodies (F1), are joined to one another virtually seamlessly in a mosaic-like manner such
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公开(公告)号：US20160039674A1
公开(公告)日：2016-02-11
申请号：US14776422
申请日：2014-03-13
CPC分类号： C01B21/265 , B01J23/002 , B01J23/34 , B01J23/83 , B01J23/8437 , B01J23/86 , B01J23/8892 , B01J35/04 , B01J37/0018 , B01J37/0036 , B01J37/033 , B01J37/036 , B01J37/082 , C01B21/28 , C01B21/38 , C01P2002/34
摘要： A system suitable for oxidizing ammonia with oxygen in the presence of catalysts is described. The system includes a reactor equipped with at least one supply line for a reactant gas mixture and at least one discharge line for a process gas; a catalyst comprising at least one transition metal oxide that is not an oxide of a platinum metal; and a device for adjusting a molar ratio of oxygen to ammonia of less than or equal to 1.75 mol/mol in the reactant gas mixture by mixing an oxygen-containing gas stream having an O2 content of
摘要翻译： 描述了一种适合于在催化剂存在下用氧气氧化氨的体系。 该系统包括装备有用于反应气体混合物的至少一个供应管线和用于处理气体的至少一个排放管线的反应器; 包含不是铂金属的氧化物的至少一种过渡金属氧化物的催化剂; 以及用于通过将O 2含量<20体积％的含氧气流与选定量的含量气体混合，在反应气体混合物中调节氧与氨的摩尔比小于或等于1.75mol / mol的装置 氨。 含氧气流由以下装置制造：用于包含小于20体积％氧气的气流稀释空气流; 或从含氧气体混合物，优选从空气中消耗氧气; 或通过其组合。
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5.发明申请APPARATUS FOR MINIMIZING BYPASS IN AMMONIA OXIDATION BURNERS OF INDUSTRIAL PLANTS WITH BURNER DIAMETERS OF 2-7 M IN NATURAL- OR FORCED-CIRCULATION BOILERS 有权用于在自然或强制循环锅炉中用2-7M燃烧器直径的工业用植物的氨的氧化燃烧器中的旁通管最小化的装置公开(公告)号：US20150209754A1
公开(公告)日：2015-07-30
申请号：US14343696
申请日：2012-09-07
申请人： Jürgen Fuchs
发明人： Jürgen Fuchs
IPC分类号： B01J19/00
CPC分类号： B01J8/008 , B01J8/0257 , B01J19/0053 , B01J2208/00884 , B01J2219/00018 , B01J2219/00761 , C01B21/267 , C01B21/28 , Y10T29/49348
摘要： Burner basket system for ammonia oxidation burners for industrial plants with burner diameters of 2-7 m in a natural- or forced-circulation boiler suitable for minimizing gas slip and for minimizing wave formation contents in the burner basket and loss of contents in the burner basket, wherein the burner basket has a wall anchored in the ammonia oxidation burner and the burner basket has a gas-permeable bottom plate, placed on internal fittings of the forced circulation boiler, wherein the wall and the gas-permeable bottom plate are not mechanically connected to each other, and the wall of the burner basket tapers conically towards the bottom plate at an angle of 5-20° from the perpendicular, and in all operating states of the ammonia oxidation burner there is a peripheral gap in the range from 5 to 10 mm between the wall and the gas-permeable bottom plate.
摘要翻译： 用于工业设备的燃烧器篮子，用于在自然或强制循环锅炉中燃烧器直径为2-7米的工业设备，适用于最小化气体滑移并最大限度地减少燃烧器篮中的波浪形成含量和燃烧器筐中的内容物损失 ，其中燃烧器筐具有锚定在氨氧化燃烧器中的壁，并且燃烧器筐具有放置在强制循环锅炉的内部配件上的透气底板，其中壁和气体可渗透的底板不机械连接 并且燃烧器筐的壁以垂直方向以5-20°的角度向底板锥形锥形，并且在氨氧化燃烧器的所有操作状态中，存在从5到 壁与透气底板之间为10mm。
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公开(公告)号：US20140353918A1
公开(公告)日：2014-12-04
申请号：US14343845
申请日：2012-09-07
申请人： Jürgen Fuchs
发明人： Jürgen Fuchs
CPC分类号： F23D14/46 , B01J8/008 , B01J8/025 , B01J12/007 , B01J2208/00884 , C01B21/28
摘要： A sealing system of a burner basket in an ammonia oxidation burner, wherein the burner basket has a wall that is anchored in the ammonia oxidation burner and the burner basket has a gas-permeable bottom plate, which is placed on further internal fittings of the ammonia oxidation burner and has a peripheral rim, wherein the wall and the gas-permeable bottom plate are not mechanically connected to each other, and so there is a gap between the wall and the peripheral rim of the bottom plate, wherein at the peripheral rim of the bottom plate a rim seal that is made up of individual segments is mounted movably by way of guiding pins and the rim seal projects over the gap between the peripheral rim of the bottom plate to the wall and lies against the wall.
摘要翻译： 一种氨氧化燃烧器中的燃烧器筐的密封系统，其中燃烧器筐具有锚固在氨氧化燃烧器中的壁，并且燃烧器筐具有透气底板，其放置在氨的另外的内部配件上 氧化燃烧器并且具有外围边缘，其中所述壁和所述透气性底板彼此不机械地连接，并且因此在所述壁与所述底板的周缘之间存在间隙，其中在所述底板的周边边缘处 底板由各个部分构成的轮辋密封件通过引导销可移动地安装，并且轮辋密封件突出到底板的周边边缘与壁之间的间隙上并且靠在壁上。
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公开(公告)号：US20130294977A1
公开(公告)日：2013-11-07
申请号：US13990950
申请日：2011-12-01
IPC分类号： B01J19/00
CPC分类号： B01J19/00 , C01B21/26 , C01B21/262 , C01B21/28 , F28D9/0037 , F28D9/0093 , F28D2021/0022 , F28F3/048 , F28F2210/02
摘要： A heat exchange apparatus is disclosed for use in the production of nitric acid and which provides for feed-effluent heat exchange and integrated nitrogen dioxide absorption. The apparatus includes a core structure having first and second groups of diffusion bonded corrosion resistant metal plates having fluid flow channel systems formed therein. A feed-effluent heat exchange system is provided by first channel systems of the first and second groups of plates being juxtaposed in heat exchange relationship and an absorption system is provided by second channel systems of the first and second groups of plates being juxtaposed in heat exchange relationship.
摘要翻译： 公开了一种用于生产硝酸并提供进料 - 出水热交换和一体二氧化氮吸收的热交换装置。 该装置包括具有第一和第二组扩散接合的耐腐蚀金属板的芯结构，其中形成有流体流动通道系统。 进料 - 流出物热交换系统由第一和第二组板的第一通道系统以热交换关系并置提供，并且吸收系统由第一和第二组板的第二通道系统以热交换并置 关系。
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公开(公告)号：US20100158784A1
公开(公告)日：2010-06-24
申请号：US12640266
申请日：2009-12-17
CPC分类号： C01B21/265 , B01J19/2485 , B01J23/8986 , B01J35/04 , B01J37/0205 , B01J37/0207 , B01J37/0248 , C01B21/28 , Y10T428/24149
摘要： Ammonia oxidation catalyst units comprising a pair of honeycomb-type blocks having interplaced between them a layer of a gas permeable material performing the function of radially mixing the gas flow, said blocks comprising an ammonia oxidation catalysts, and having height of less than 15 cm and the interplaced layer height of 3 to 0.5 cm.
摘要翻译： 氨氧化催化剂单元包括一对蜂窝型块，它们在它们之间插入一层气体可渗透材料，其具有径向混合气流的功能，所述块包含氨氧化催化剂，并且具有小于15cm的高度， 插入层高度为3至0.5厘米。
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公开(公告)号：US07514058B1
公开(公告)日：2009-04-07
申请号：US12125582
申请日：2008-05-22
IPC分类号： C01C1/04
CPC分类号： C01B21/26 , C01B21/28 , C01B21/38 , C01B21/48 , C01C1/0405 , C02F3/28 , C02F3/34 , C02F3/345 , C02F2101/101 , C02F2209/15 , C02F2305/06 , C09K8/582 , C09K2208/20 , Y02P20/52 , Y10S210/916
摘要： An apparatus and method produces nitrate ions on-site from water, natural gas and air extracted in proximity to the apparatus. The apparatus generates nitrate ions and brings the nitrate ions into contact with an aqueous system. Hydrogen sulfide present in the aqueous system is removed and the production of hydrogen sulfide by sulfate-reducing bacteria (SRB) is eliminated by introducing into the system nitrate ions, whereby denitrifying microorganisms, using nitrate, outcompete the sulfate-reducing bacteria for the available carbon nutrients, thus preventing the SRB from producing hydrogen sulfide. Nitrate ions generated by the apparatus and added to the aqueous system which contains the denitrifying microorganisms can enhance oil recovery by means of microbial enhanced oil recovery mechanisms.
摘要翻译： 一种装置和方法，从设备附近抽出的水，天然气和空气现场产生硝酸根离子。 该装置产生硝酸根离子并使硝酸根离子与含水体系接触。 存在于水体系中的硫化氢被除去，硫酸盐还原菌（SRB）的硫化氢通过向系统硝酸根离子引入而被消除，由此使用硝酸盐的反硝化微生物不利于硫酸盐还原菌用于可用的碳 营养物质，从而防止SRB产生硫化氢。 由装置产生并加入到含有脱氮微生物的含水体系中的硝酸根离子可以通过微生物增强的油回收机制增强油的回收。
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公开(公告)号：US06878351B1
公开(公告)日：2005-04-12
申请号：US09869934
申请日：1999-12-10
申请人： Raymond Davies
发明人： Raymond Davies
CPC分类号： B01J8/008 , B01J8/025 , B01J2208/00141 , B01J2208/00884 , C01B21/28
摘要： A catalyst support structure e.g. for use in an ammonia oxidation reactor, comprising a series of primary supports (19) disposed above a catalyst bed, a lattice assembly disposed beneath the catalyst bed and on which the catalyst bed rests, said lattice assembly being suspended from the primary supports (19) by suspending means (27) extending through the catalyst bed. Preferably the support structure includes a static start-up burner arrangement in the form of one or more perforated tubes (24) adjacent the primary supports (19).
摘要翻译： 催化剂载体结构 用于氨氧化反应器，包括设置在催化剂床上方的一系列主要载体（19），设置在催化剂床下方的格栅组件，催化剂床搁置在其上，所述晶格组件悬挂在主支撑件（19） ）通过延伸穿过催化剂床的悬挂装置（27）。 优选地，支撑结构包括邻近主支撑件（19）的一个或多个穿孔管（24）形式的静态启动燃烧器装置。
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