公开(公告)号：US5547495A

公开(公告)日：1996-08-20

申请号：US242356

申请日：1994-05-13

申请人： Robert A. Wright

发明人： Robert A. Wright

IPC分类号： B01D53/86 ,  B03C3/14 ,  C01B17/80 ,  F23J15/00

CPC分类号： C01B17/803 ,  B01D53/8609 ,  B03C3/14

摘要： The present invention provides a flue gas conditioning system and method for generating conditioning agent used in the removal of entrained particles in a flue gas flow with an electrostatic precipitator. The invention involves a catalytic converter that is operable between an operative position where the flue gas is exposed to the catalyst and converts SO.sub.2 contained in the flue gas to SO.sub.3 when conditioning agent is needed and an inoperative position where the flue gas is not exposed to the catalyst when conditioning agent is no longer needed. The catalytic converter and related assembly may take variable configurations to accommodate various flue gas ductworks and space limitations and may carry one or more SO.sub.2 /SO.sub.3 converters providing a plurality of open and generally parallel flow paths of the flue gas.

摘要翻译： 本发明提供了一种用于产生调节剂的烟道气调节系统和方法，所述调节剂用于利用静电除尘器除去烟道气流中的夹带颗粒。 本发明涉及一种催化转化器，其在烟道气暴露于催化剂的操作位置和在需要调节剂时将烟道气中包含的SO 2转化为SO 3的操作位置和烟道气体不暴露于烟道气体的不工作位置 催化剂不再需要调理剂时。 催化转化器和相关组件可以采取可变配置以适应各种烟道管道工作和空间限制，并且可以携带一个或多个SO 2 / SO 3转化器，其提供烟道气的多个开放和大致平行的流动路径。

公开(公告)号：US5480620A

公开(公告)日：1996-01-02

申请号：US291819

申请日：1994-08-17

申请人： Gordon M. Cameron

发明人： Gordon M. Cameron

IPC分类号： C01B17/765 ,  C01B17/80 ,  B01D50/00

CPC分类号： C01B17/803 ,  C01B17/765

摘要： A catalytic converter for converting sulfur dioxide to sulfur trioxide comprising an exterior shell of a heat resistant weldable metal; foundations from which the shell vertically extends; an interior tube of same metal vertically disposed within the shell and defining a passage; the interior tube having i. a first inlet aperture through which the passage receives a first portion of a sulfur dioxide-containing gas from a source of such gas; ii. a second inlet aperture through which the passage receives a second portion of the sulfur dioxide-containing gas; and iii. an outlet aperture; at least one catalyst bed including an annular bed extending fully between the shell and the interior tube; wherein the annular bed is in direct gaseous communication within the shell with the first passage through the outlet aperture; a plurality of axial heat exchange tubes within the interior tube for conducting hot sulfur trioxide-containing gas from the catalyst bed through the heat exchange tubes to effect heat transfer with and to heat the first and second portions of the sulfur dioxide-containing gas and to cool the hot sulfur-trioxide containing gas; structure for directing the hot sulfur trioxide-containing gas to the heat exchange tubes, and for directing the heated first and second portions of the sulfur-dioxide containing gas through the outlet aperture to the annular bed. The converter offers improved thermal efficiencies and compactness.

摘要翻译： 一种用于将二氧化硫转化为三氧化硫的催化转化器，包括耐热可焊接金属的外壳; 壳体垂直延伸的基础; 垂直设置在壳体内并限定通道的相同金属的内管; 内管有i。 第一入口孔，通道从该第一入口孔接收来自这种气体源的第一部分含二氧化硫的气体; ii。 第二入口孔，通道通过该第二入口孔容纳含二氧化硫气体的第二部分; 和iii。 出口孔; 至少一个催化剂床，包括在壳体和内部管之间完全延伸的环形床; 其中所述环形床在所述壳体内与所述第一通道通过所述出口孔直接气体连通; 内部管中的多个轴向热交换管，用于通过热交换管从催化剂床传导含热氧化硫的气体，以实现与含二氧化硫的气体的第一和第二部分的热传递和加热含二氧化硫的气体的第一和第二部分，并且 冷却含热氧化硫的气体; 用于将热的含三氧化硫的气体引导到热交换管的结构，以及用于将加热的含二氧化硫的气体的第一和第二部分通过出口孔引导到环形床。 该转换器提供了改进的热效率和紧凑性。

公开(公告)号：US5366708A

公开(公告)日：1994-11-22

申请号：US997597

申请日：1992-12-28

申请人： Yurii S. Matros ,  Robert A. Yeo ,  David E. McCombs

发明人： Yurii S. Matros ,  Robert A. Yeo ,  David E. McCombs

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J8/04 ,  C01B3/38 ,  C01B17/04 ,  C01B17/80 ,  C01C1/04 ,  B01D53/00

CPC分类号： B01J8/0496 ,  B01D53/864 ,  B01D53/9431 ,  B01J8/048 ,  C01B17/043 ,  C01B17/803 ,  C01B3/38 ,  C01C1/0417 ,  B01J2208/00274 ,  B01J2208/0053 ,  Y02P20/52

摘要： Apparatus and process for the catalytic gaseous phase reaction of a feed gas mixture. The apparatus includes a reactor having two ends which alternately serve as an inlet for the feed gas mixture and as an outlet for reacted gas and two stationary heat exchange/reaction zones connected by a center zone. Each of the heat exchange/reaction zones contains a layer of catalyst and the center zone contains a feed gas mixture inlet. A first distribution/collection zone is between one of the heat exchange/reaction zones and one of the ends of the reactor and a second distribution/collection zone is between the other heat exchange/reaction zone and the other end of the reactor. In the process, the heat exchange/reaction zones are alternately heated and cooled by periodically reversing the direction of flow of gas through the reactor. As an intermediate step in each complete reversal of the direction of flow of gas through the reactor, the feed gas is introduced into the center zone and reacted in the heat exchange/reaction zone which was being heated immediately prior to the intermediate step, reacted gas is discharged from the end of the reactor which served as the reacted gas outlet immediately prior to the intermediate step, unreacted feed gas trapped in the distribution/collection zone between the heat exchange/reaction zone which was being cooled and the end of the reactor which served as the feed gas inlet immediately prior to the intermediate step is displaced to the center zone, and the displaced unreacted gas is combined with feed gas mixture being introduced into the reactor.

摘要翻译： 进料气体混合物的催化气相反应的装置和方法。 该装置包括具有两端的反应器，其交替地用作进料气体混合物的入口和作为反应气体的出口和由中心区域连接的两个固定的热交换/反应区域。 每个热交换/反应区包含一层催化剂，中心区含有进料气体混合物入口。 第一分配/收集区位于热交换/反应区之一和反应器的一端之间，第二分配/收集区在另一个热交换/反应区和反应器的另一端之间。 在此过程中，通过周期性地反转气体通过反应器的方向来交替地加热和冷却热交换/反应区域。 作为在通过反应器的气体的每次完全逆转的中间步骤中，将进料气体引入中心区域，并在中间步骤之前立即加热的热交换/反应区域中反应，反应气体 在刚好在中间步骤之前用作反应气体出口的反应器的末端排出未被反应的进料气体，其被捕获在被冷却的热交换/反应区域和反应器末端之间的分配/收集区中 作为在中间步骤之前的进料气体入口被移动到中心区域，并且将置换的未反应气体与被引入反应器中的进料气体混合物组合。

公开(公告)号：US5350441A

公开(公告)日：1994-09-27

申请号：US34273

申请日：1993-03-22

申请人： Robert A. Wright

发明人： Robert A. Wright

IPC分类号： B01D53/86 ,  B03C3/013 ,  B03C3/14 ,  C01B17/80 ,  B03C3/66

CPC分类号： B01D53/8609 ,  B03C3/013 ,  B03C3/14 ,  B03C3/66 ,  C01B17/803

摘要： Improved apparatus and methods for the treatment of boiler flue gas with sulfur trioxide conditioning agent include the beneficial use of catalytic converters that can be located immediately adjacent the injection site for their sulfur trioxide output, that can be individually sized and manufactured for variable required conditioning agent outputs, that can be individually controlled and can provide substantially improved conversion efficiency and that can provide an efficient, flexible, effective and relatively inexpensive multi-boiler flue conditioning system.

摘要翻译： 改进的用三氧化硫调节剂处理锅炉烟道气的装置和方法包括有利地使用可以紧邻注射部位的三氧化硫输出的催化转化器，其可以单独调整和制造用于可变需要的调理剂 输出，其可以单独控制并且可以提供显着提高的转换效率，并且可以提供高效，灵活，有效和相对便宜的多锅炉烟道调节系统。

公开(公告)号：US5306477A

公开(公告)日：1994-04-26

申请号：US48163

申请日：1993-04-15

申请人： Elmar-Manfred Horn ,  Stylianos Savakis

发明人： Elmar-Manfred Horn ,  Stylianos Savakis

IPC分类号： B01J19/02 ,  C01B17/80 ,  C22C38/00 ,  C22C38/40 ,  C22C38/42 ,  B01J19/00 ,  C01B17/48 ,  C01B17/69

CPC分类号： C22C38/40 ,  B01J19/02 ,  C01B17/80 ,  C01B17/806 ,  B01J2219/0277

摘要： In a process such as the preparation of sulphuric acid wherein a wrought or cast material or a welding filler is contacted with hot concentrated sulphuric acid or oleum of up to 10 wt-%, the improvement which comprises forming the contact portion of said wrought or cast material or said filler of an austenitic iron-nickel-chromimum-silicon alloy comprising about15.5 to 17.5 wt-% nickel10 to 12 wt-% chromium5.7 to 6.5 wt-% siliconup to max. 0.06 wt-% carbonup to max. 1.5 wt-% manganeseup to max. 0.03 wt-% phosphorusup to max. 0.03 wt-% sulphurup to max. 0.15 wt-% titaniumup to max. 0.8 wt-% zirconiumup to max. 0.2 wt-% nitrogen andup to max. 0.3 wt-% molybdenumand the remainder iron,together with minimal quantities of normally present impurities, including the deoxidizing elements magnesium, aluminum and calcium.

摘要翻译： 在诸如制备硫酸的方法中，其中将锻造或铸造的材料或焊接填料与热浓硫酸或发烟硫酸接触至多10重量％，其改进包括形成所述锻造或铸造的接触部分 材料或奥氏体铁 - 镍 - 铬 - 硅合金的所述填料，其包含约15.5至17.5重量％的镍10至12重量％的铬5.7至6.5重量％的硅，直至最大。 0.06重量％碳至多 1.5重量％锰至最高 0.03重量％磷至最高 0.03重量％硫至多 0.15重量％钛，最高 0.8重量％的锆，直到最大 0.2重量％的氮气， 0.3重量％的钼，其余为铁，以及最少量的通常存在的杂质，包括脱氧元素镁，铝和钙。

公开(公告)号：US5198206A

公开(公告)日：1993-03-30

申请号：US623409

申请日：1990-12-06

申请人： Peter Schoubye

发明人： Peter Schoubye

IPC分类号： B01D53/50 ,  B01D53/77 ,  B01D53/86 ,  C01B17/69 ,  C01B17/74 ,  C01B17/76 ,  C01B17/80 ,  C01B17/90

CPC分类号： C01B17/806 ,  B01D53/8609 ,  C01B17/76

摘要： When condensing sulfuric acid from gases containing sulfuric acid vapor and steam in excess, e.g. originating from a power station, a substantial decrease of the amount minute droplets of sulfuric acid (the so-called acid mist) escaping to the surroundings is obtained, even in cases where the sulfuric acid plant is equipped with an aerosol filter, if minute nucleation cores are incorporated into the gas in an amount of 10.sup.9 to 10.sup.12 solid particles per Nm.sup.3 per 0.1 % H.sub.2 SO.sub.4 -vapor in the gas. The nucelation cores may, e.g., be generated by combusting hydrocarbons with>2 carbon atoms or silicones, or added as smoke from an electric arc or welding.

摘要翻译： PCT No.PCT / DK89 / 00133 Sec。 371 1990年12月6日第 102（e）日期1990年12月6日PCT提交1989年5月22日PCT公布。 出版物WO89 / 12025 日期为1989年12月14日。当从含有硫酸蒸汽和蒸汽的气体中浓缩硫酸， 即使在硫酸装置配备有气溶胶过滤器的情况下，即使是微小的成核，也能够获得大量的硫酸酸滴（所谓的酸性雾）逸出到周边的量 在气体中，核心以每Nm 3每0.1％H 2 SO 4蒸汽为109至1012个固体颗粒的量加入到气体中。 可以例如通过燃烧具有> 2个碳原子的碳氢化合物或硅氧烷，或者从电弧或焊接作为烟气加入来生产所述核心。

公开(公告)号：US5118490A

公开(公告)日：1992-06-02

申请号：US369301

申请日：1989-06-21

申请人： Donald R. McAlister

发明人： Donald R. McAlister

IPC分类号： B01J19/02 ,  C01B17/775 ,  C01B17/80 ,  F28F21/08

CPC分类号： F28F21/08 ,  B01J19/02 ,  C01B17/775 ,  C01B17/806 ,  B01J2219/0286 ,  Y02P20/124 ,  Y02P20/129

摘要： An improved process for manufacture of sulfuric acid by catalytic oxidation of wet sulfur dioxide gas. Wet conversion gas is contacted with sulfuric acid in a heat recovery stage to effect absorption and generate the heat of absorption. Wet gas having a mole ratio of sulfur trioxide to water vapor of at least 0.95 is introduced into the heat recovery stage at a temperature above the dew point of the gas. Sulfuric acid is introduced into the heat recovery absorption stage at a temperature of at least about 170.degree. C. and a concentration between about 98.5% and about 99.5%. The sulfuric acid stream as discharged from the absorption stage is at a temperature of at least about 190.degree. C. and has a concentration between about 99% and about 100%. The heat of absorption is recovered from the discharge absorption acid stream in useful form by transfer of heat to another fluid in a heat exchanger, the another fluid being heated to a temperature of at least about 140.degree. C. The exit gas stream from the heat recovery stage is contacted with sulfuric acid in a condensing stage for absorption of residual sulfur trioxide and condensation of sulfuric acid vapor. The liquid/gas contact in the condensing stage is carried out before the exit gas is either exhausted from the process or catalytically oxidized to produce additional sulfur trioxide.

摘要翻译： 通过湿二氧化硫气体的催化氧化制备硫酸的改进方法。 湿热转化气体在热回收阶段与硫酸接触以实现吸收并产生吸收热。 具有至少0.95的三氧化硫与水蒸气的摩尔比的湿气体在高于气体露点的温度下引入热回收阶段。 硫酸在至少约170℃的温度和约98.5％至约99.5％的浓度下引入热回收吸收阶段。 从吸收阶段排出的硫酸流的温度为至少约190℃，浓度为约99％至约100％。 通过在热交换器中将热量转移到另一种流体中，吸收热量从排放吸收酸流中回收，另一种流体被加热到至少约140℃的温度。来自热量的出口气体流 回收阶段在冷凝阶段与硫酸接触，以吸收残留的三氧化硫和硫酸蒸气的冷凝。 在冷凝阶段之前的液体/气体接触在排出气体从过程中排出或催化氧化以产生另外的三氧化硫之前进行。

公开(公告)号：US5108731A

公开(公告)日：1992-04-28

申请号：US613584

申请日：1990-11-30

申请人： Peter Schoubye

发明人： Peter Schoubye

IPC分类号： C01B17/74 ,  B01D53/86 ,  C01B17/76 ,  C01B17/80 ,  C01B17/90

CPC分类号： B01D53/8609 ,  C01B17/76 ,  C01B17/806 ,  Y02C20/30

摘要： Flue gases etc. may contain SO.sub.2 which should be prevented from admission to the atmosphere. SO.sub.2 is oxidized to SO.sub.3 and condensed with steam to H.sub.2 SO.sub.4 -vapors 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 H.sub.2 SO.sub.4 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.

摘要翻译： PCT No.PCT / DK89 / 00129 Sec。 371日期1990年11月30日 102（e）1990年11月30日日期PCT提交1989年5月18日PCT公布。 出版物WO89 / 12024 日期为1989年12月14日。烟气等可能含有应防止进入大气层的二氧化硫。 SO2被氧化成SO3，并与蒸汽一起冷凝成H 2 SO 4 - 蒸汽，其在从外部冷却的立式玻璃管中冷凝。 原则上，冷凝物被收集在管的底部附近。 在冷却过程中，形成非常小的H2SO4液滴的雾，并且倾向于逸出到大气中。 环境法规不断增加减少酸雾逸出量的要求。 根据本发明，实现酸雾逸出的重要方法是使离开每个管的气体通过与管顶部气密连接的气溶胶过滤器。 这种过滤器可以由耐酸纤维或厚度为0.04-0.7mm的长丝组成，并且可以以规定的方式布置，以确保压力下降到低于20毫巴。 此外，使过滤器中的硫酸与进料气体逆流向下流过管。 公开了用于该目的的过滤器和过滤介质的各种实施例。 回收的硫酸是高纯度和高度浓缩的。

公开(公告)号：US4335076A

公开(公告)日：1982-06-15

申请号：US224154

申请日：1981-01-12

申请人： John McFarland

发明人： John McFarland

IPC分类号： B01J8/04 ,  C01B17/80 ,  B01D50/00

CPC分类号： B01J8/0469 ,  C01B17/803

摘要： A converter for converting SO.sub.2 to SO.sub.3, having an exterior shell, a central axial core tube, and a number of annular catalyst beds one above the other, placed on support plates and separated by division plates. The shell, core tube, support and division plates are all of stainless steel. The support and division plates are performed in a domed shape to prevent excessive sagging in use and are welded to the shell and core tubes, except for the support plate of the first bed. The first bed is at the bottom of the converter and its support plate is welded to an encircling plenum through which supply gas enters. The plenum shields the shell from the hot first bed and produces abrupt changes in the flow direction of the supply gas to remove entrained particles therefrom. From the first bed the gas flows through an internal axial heat exchanger in the core tube, where the gas is cooled against gas from the intermediate absorber, eliminating the need to remove the very hot first bed gas from the converter with a bellows piping system. The first bed gas enters a second bed at the top of the converter and then leaves the converter via a large diameter exit opening in the shell, which opening is of larger diameter than the height between the second bed support plate and its adjacent division plate. The height difference is accommodated by a slot cut in the division plate and a transition plate welded between the slot and the lower part of the exit opening.

摘要翻译： 用于将SO 2转化为SO 3的转炉，其具有外壳，中心轴芯和多个环形催化剂床，一个放置在支撑板上并由分隔板分离。 外壳，芯管，支撑和分隔板均为不锈钢。 支撑和分隔板以圆顶形状进行，以防止使用中的过度下垂，并且焊接到除了第一床的支撑板之外的壳和芯管。 第一个床位于转炉的底部，其支撑板焊接到供气进入的环绕通风室。 增压室将壳从热第一床屏蔽起来，并且在供应气体的流动方向上产生突然的变化以从其中除去夹带的颗粒。 从第一个床上，气体流过核心管中的内部轴向热交换器，其中气体被冷却来自中间吸收器的气体，消除了用波纹管道系统从转换器去除非常热的第一床气体的需要。 第一床气体在转化器的顶部进入第二床，然后通过壳体中的大直径出口开口离开转换器，该开口的直径大于第二床支撑板和其相邻分隔板之间的高度。 高度差通过在分隔板上切割的槽容纳，并且过渡板被焊接在所述槽和出口开口的下部之间。

公开(公告)号：US3788043A

公开(公告)日：1974-01-29

申请号：US3788043D

申请日：1971-10-12

申请人： METALLGESELLSCHAFT AG

发明人： DORR K ,  GRIMM H ,  KOLA R

IPC分类号： B01D53/18 ,  C01B17/765 ,  C01B17/80 ,  B01D47/06

CPC分类号： B01D53/18 ,  C01B17/7655 ,  C01B17/806

摘要： In a contact process for transforming sulfur dioxide to sulfur trioxide, between the contact stages there is provided an interstage absorber for removing sulfur trioxide for the gases emerging from a previous stage. The gases are passed by a venturi system in intimate contact with sulfuric acid into a settling chamber in which sulfuric acid is collected in the sump and then, by another gas/liquid contactor or reagitator, into a further settling chamber with an outlet at its upper end.

摘要翻译： 在将二氧化硫转化为三氧化硫的接触方法中，在接触阶段之间，提供了用于从前一阶段出现的气体中除去三氧化硫的级间吸收剂。 气体通过与硫酸紧密接触的文氏管系统进入沉淀室，其中将硫酸收集在贮槽中，然后通过另一种气/液接触器或反应器进入另一沉淀室，在其上部具有出口 结束。