利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.02 秒)

    Method for purifying high-temperature reducing gas
    1.
    发明授权
    Method for purifying high-temperature reducing gas 失效
    纯化高温还原气的方法

    公开(公告)号：US4994257A

    公开(公告)日：1991-02-19

    申请号：US41868

    申请日：1987-04-23

    申请人： Mitsugi Suehiro ,  Toshikuni Sera ,  Kenji Inoue ,  Akira Shimada

    发明人： Mitsugi Suehiro ,  Toshikuni Sera ,  Kenji Inoue ,  Akira Shimada

    IPC分类号： C01B3/56 ,  C01B17/52 ,  C10K1/20

    CPC分类号： C10K1/20 ,  C01B17/52 ,  C01B3/56 ,  C01B2203/043 ,  C01B2203/0485

    摘要： The present invention is directed to a method for purifying a high-temperature reducing gas by continuously circulating the processes of reducing a regenerated absorbent with the high-temperature reducing gas, until concentrations of aimed reducing gases have become uniform on upstream and downstream sides of the absorbent, and absorbing sulfur compounds by the use of this absorbent and thereby removing these sulfur compounds therefrom; the aforesaid method being characterized by using at least three reactors filled with the absorbent, by consisting of the four steps of reduction, absorption, SO.sub.2 reduction and regeneration, and by comprising the steps of feeding a circulating gas from the regenerating step to the SO.sub.2 reducing step; converting an SO.sub.2 gas produced in the regenerating step and the SO.sub.2 reducing step into elemental sulfur and recovering the latter as liquid sulfur; and introducing a part of the SO.sub.2 gas into the reducing step and returning the remaining SO.sub.2 gas to the regenerating step.

    摘要翻译： 本发明涉及一种通过连续循环利用高温还原气体还原再生吸收剂的方法来提纯高温还原气体的方法，直到目标还原气体的浓度在上游和下游侧变得均匀 通过使用该吸收剂吸收和吸收硫化合物，从而从其中除去这些硫化合物; 上述方法的特征在于使用至少三个填充有吸收剂的反应器，通过还原，吸收，SO2还原和再生的四个步骤组成，并且包括以下步骤：将循环气体从再生步骤进料到SO 2还原 步; 将再生步骤中产生的SO 2气体和SO 2还原步骤转化为元素硫，并将其回收为液态硫; 并将一部分SO 2气体引入到还原步骤中并将剩余的SO 2气体返回到再生步骤。

    Gas refining system
    2.
    发明授权
    Gas refining system 失效
    气体精炼系统

    公开(公告)号：US5980846A

    公开(公告)日：1999-11-09

    申请号：US74033

    申请日：1998-05-06

    申请人： Atsushi Tatani ,  Kazuaki Kimura ,  Makoto Susaki ,  Toshikuni Sera ,  Kenji Inoue

    发明人： Atsushi Tatani ,  Kazuaki Kimura ,  Makoto Susaki ,  Toshikuni Sera ,  Kenji Inoue

    IPC分类号： B01D53/52 ,  B01D53/04 ,  C10J3/46 ,  C10K1/26 ,  C10L3/10 ,  B01D53/48 ,  B01D53/34

    CPC分类号： C10K1/26

    摘要： This invention relates to a gas refining system wherein a high-temperature and high-pressure reducing gas is introduced into a fixed-bed desulfurizer packed with an adsorbent by which sulfur compounds contained in the high-temperature and high-pressure reducing gas are adsorbed and removed in the form of a sulfide, and the adsorbent having the sulfide adsorbed thereon is regenerated by roasting it with a regenerating gas containing oxygen, characterized in that the gas refining system is equipped with oxygen concentration control means for controlling the oxygen concentration in the regenerating gas introduced into the desulfurizer so as to keep the internal temperature of the desulfurizer during the regeneration reaction within the allowable temperature range of the adsorbent. This invention includes an embodiment in which the exhaust gas obtained after the regeneration reaction gas is brought into contact with a calcium compound-containing slurry to recover gypsum is recycled to the desulfurizer for use as the regenerating gas for the adsorbent. Thus, the adverse effect of the heat of regeneration reaction on the adsorbent used in the fixed-bed desulfurizer can be avoided positively and easily.

    摘要翻译： 本发明涉及一种气体精炼系统，其中将高温高压还原气体引入填充有吸附剂的固定床脱硫器中，通过该吸附剂吸附高温高压还原气体中所含的硫化合物， 以硫化物的形式除去，吸附有硫化物的吸附剂通过用含氧的再生气体焙烧而再生，其特征在于，气体精炼系统配备有氧浓度控制装置，用于控制再生中的氧浓度 将气体引入脱硫器中，以便在再生反应期间将脱硫剂的内部温度保持在吸附剂的允许温度范围内。 本发明包括将再生反应气体与含钙化合物的浆料接触以回收石膏后获得的废气再循环至脱硫器，用作吸附剂的再生气体。 因此，可以积极且容易地避免再生反应的热量对固定床脱硫剂中使用的吸附剂的不良影响。

    Denitration catalyst and denitrating method
    5.
    发明授权
    Denitration catalyst and denitrating method 失效
    脱硝催化剂和脱硝方法

    公开(公告)号：US4466947A

    公开(公告)日：1984-08-21

    申请号：US456398

    申请日：1983-01-07

    申请人： Makoto Imanari ,  Bunzi Oshida ,  Yusaku Arima ,  Hirokazu Tanaka ,  Yoshinori Todo ,  Norihisa Kobayashi ,  Toshikuni Sera

    发明人： Makoto Imanari ,  Bunzi Oshida ,  Yusaku Arima ,  Hirokazu Tanaka ,  Yoshinori Todo ,  Norihisa Kobayashi ,  Toshikuni Sera

    IPC分类号： B01D53/94 ,  B01J23/22 ,  B01J23/30 ,  B01J27/053 ,  B01J8/00 ,  C01B21/00

    CPC分类号： B01J23/22 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2255/2047 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20776

    摘要： A denitration catalyst comprising at least three metal components, (A) titanium, (B) tungsten and/or magnesium, and (C) vanadium, the titanium and tungsten being contained as oxides and the magnesium and vanadium being contained in the form of an oxide or a sulfate or both, said catalyst being composed of a porous molded article of a mixture of an oxide of component A and an oxide and/or a sulfate of component B, the atomic ratio of component B to component A being from 0.01 to 1, and a vanadium compound localized in that area of said molded article which extends from its outermost surface to a depth of 500 microns or less, the content of the vanadium compound in said area being 0.1 to 15% by weight; and a method for removing nitrogen oxides from a waste gas, which comprises contacting a waste gas containing nitrogen oxides, together with ammonia and molecular oxygen, at a temperature of 150.degree. to 650.degree. C., with the aforesaid catalyst.

    摘要翻译： 包含至少三种金属组分（A）钛，（B）钨和/或镁和（C）钒）的脱硝催化剂，所述钛和钨作为氧化物包含，并且所述镁和钒以 氧化物或硫酸盐或两者，所述催化剂由组分A的氧化物和组分B的氧化物和/或硫酸盐的混合物的多孔模制品组成，组分B与组分A的原子比为0.01至 1和位于所述模制品的该区域的钒化合物，其从最外表面延伸至500微米或更小的深度，所述区域中的钒化合物的含量为0.1至15重量％; 以及从废气中除去氮氧化物的方法，该方法包括在150℃至650℃的温度下将含有氮氧化物的废气与氨和分子氧与上述催化剂接触。

    Process for controlling nitrogen oxides in exhaust gases and apparatus therefor
    7.
    发明授权
    Process for controlling nitrogen oxides in exhaust gases and apparatus therefor 失效
    用于控制废气中的氮氧化物的方法及其设备

    公开(公告)号：US4302431A

    公开(公告)日：1981-11-24

    申请号：US151814

    申请日：1980-05-21

    申请人： Masumi Atsukawa ,  Kazuhiro Matsumoto ,  Toru Seto ,  Toshikuni Sera ,  Naohiko Ukawa

    发明人： Masumi Atsukawa ,  Kazuhiro Matsumoto ,  Toru Seto ,  Toshikuni Sera ,  Naohiko Ukawa

    IPC分类号： B01D53/94 ,  B01D53/86 ,  F23J15/00 ,  B01D53/36

    CPC分类号： B01D53/8631 ,  B01D53/8625

    摘要： In a process and an apparatus for controlling oxides of nitrogen in exhaust gases from combustion equipment by decomposing the oxides, in the presence of oxygen, with ammonia blown into the equipment and associated ducting at temperatures within the range from 700.degree. to 1300.degree. C., a catalyst assembly is arranged, with the catalytic surfaces of the component units substantially in parallel to the direction of exhaust gas flow, in a region where the temperature of the gas after the decomposing treatment is between 300.degree. and 500.degree. C., and the gas after the decomposing treatment is caused to pass through the catalyst assembly to decompose residual nitrogen oxides and ammonia in the gas to innocuous substances. An additional supply of ammonia, in an amount from 0.5 to 1.5 times equivalent (in molar ratio) to the amount of nitrogen oxides in moles in the gas is introduced into the space immediately upstream of the catalyst assembly, thereby to accelerate the decomposition of the oxides in the gas to make it harmless.

    摘要翻译： 在用于通过在氧气存在下将氧化物分解成燃烧设备的废气中的氮氧化物的方法和装置，并且在700至1300℃的温度范围内控制相关的管道。 在分解处理后的气体温度在300〜500℃之间的区域内，配置有催化剂组件，其中组分单元的催化剂表面基本上与废气流动方向平行，并且 使分解处理后的气体通过催化剂组件，将气体中的残留氮氧化物和氨分解成无害物质。 在催化剂组件的紧挨着上游的空间内，引入相当于气体中的氮氧化物的摩尔比为0.5〜1.5倍（以摩尔比计）的氨的额外供给，从而加速了 气体中的氧化物使其无害化。

    Method of producing gypsum
    9.
    发明授权
    Method of producing gypsum 失效
    生产石膏的方法

    公开(公告)号：US5798087A

    公开(公告)日：1998-08-25

    申请号：US763295

    申请日：1996-12-10

    申请人： Taiichiro Suda ,  Nagatoshi Fujii ,  Masami Kawasaki ,  Yoshiko Moriguchi ,  Masaki Iijima ,  Toshikuni Sera

    发明人： Taiichiro Suda ,  Nagatoshi Fujii ,  Masami Kawasaki ,  Yoshiko Moriguchi ,  Masaki Iijima ,  Toshikuni Sera

    IPC分类号： B01D53/86 ,  C01F11/46

    CPC分类号： B01D53/8612 ,  C01F11/46 ,  C01F11/464

    摘要： After hydrogenation and desulfurization treatment of raw fuel in the desulfurization unit 1, the product is separated in the acidic gas separator 2 into fuel and a hydrogen sulfide-containing gas, and the hydrogen sulfide-containing gas is subjected to combustion together with air in the catalyst converter 3 thereby converting the hydrogen sulfide completely into sulfur dioxide to give a sulfur dioxide-containing gas, and this sulfur dioxide-containing gas is reacted with limestone powder and air in water in the oxidation and neutralization reactor 4, and the resulting slurry is dehydrated in the gypsum slurry solid/liquid separator 5 and then dried in the gypsum heater 6.

    摘要翻译： 在脱硫单元1中对原料燃料进行氢化脱硫处理后，将产物在酸性气体分离器2中分离为燃料和含硫化氢的气体，并且含硫化氢的气体与空气一起在 催化剂转化器3，从而将硫化氢完全转化为二氧化硫，得到含二氧化硫的气体，并且该含二氧化硫的气体与氧化和中和反应器4中的石灰石粉末和空气在水中反应，并将得到的浆料 在石膏浆固体/液体分离器5中脱水，然后在石膏加热器6中干燥。