Method for the removal of sulfur oxide and nitrogen oxide from exhaust
gases
    2.
    发明授权
    Method for the removal of sulfur oxide and nitrogen oxide from exhaust gases 失效
    从废气中去除硫氧化物和氮氧化物的方法

    公开(公告)号:US4915921A

    公开(公告)日:1990-04-10

    申请号:US560420

    申请日:1983-12-12

    IPC分类号: B01D53/60

    CPC分类号: B01D53/60

    摘要: Method and apparatus for the removal of sulfur oxides and nitrogen oxides from exhaust gas with the addition of gaseous ammonia at temperatures between 110.degree. and 180.degree. C. The exhaust gas is led across carbon-containing adsorption agent flowing downwardly within a reactor, a portion of sulfur oxide initially being adsorptively removed in a upper part of a travelling bed, with nitrogen oxide catalytically reduced to nitrogen as well as further sulfur oxide being separated in a lower part of the travelling bed. Unloaded adsorption agent is delivered to the upper bed part, partially loaded adsorption agent is removed from that bed part and delivered to the lower bed part without mingling, loaded adsorption agent is removed from the lower bed part and led to a regeneration, after which it is delivered to the upper bed part.

    摘要翻译: 在110〜180℃的温度下,通过加入气态氨,从废气中除去硫氧化物和氮氧化物的方法和装置。废气被引导通过在反应器内向下流动的含碳吸附剂, 最初在移动床的上部吸附除去硫氧化物,其中氮氧化物催化还原为氮气,并且另外的硫氧化物在移动床的下部分离。 将未加载的吸附剂输送到上床部分,将部分负载的吸附剂从该床部分除去并且不会混合地输送到下床部分,将负载的吸附剂从下床部分除去并导致再生,之后 被送到上床部分。

    Activated coke method of removing nitrogen oxides from exhaust gases
    3.
    发明授权
    Activated coke method of removing nitrogen oxides from exhaust gases 失效
    从废气中除去氮氧化物的活性焦炭方法

    公开(公告)号:US4855116A

    公开(公告)日:1989-08-08

    申请号:US2793

    申请日:1987-01-15

    IPC分类号: B01D53/94 B01D53/86 B01J21/18

    CPC分类号: B01D53/8628 B01J21/18

    摘要: Use of activated carbon for reduction of nitric oxides with ammonia from exhaust gases using ammonia as reduction agent in the temperature range between 90.degree.-150.degree. C., made from hardcoal, blended with binding agents like pitch, bitumen, tar or tar oil, shaped and subjected to low-temperature carbonization with a heating rate of 20.degree.-100.degree. C./min to temperature between 700.degree.-900.degree. C. in an atmosphere containing 2-5% by vol. of oxygen, so that for the activated coke 2-8% of volatile matter and a surface of 20-150 am.sup.2 /g is arrived at.

    摘要翻译: PCT No.PCT / EP86 / 00205 Sec。 371日期1987年1月15日 102(e)日期1987年1月15日PCT提交1985年4月2日PCT公布。 出版物WO86 / 05711 1986年10月9日。使用氨气作为还原剂在废气中用氨还原一氧化氮的活性炭在90〜-150℃的温度范围内由硬木制成,与沥青,沥青 焦油或焦油,在含有2-5%体积的气氛中成型并进行低温碳化,加热速率为20℃-100℃/分钟至700-900℃的温度。 的氧气,使得对于活性焦炭,2-8%的挥发性物质和20-150 am2 / g的表面达到。

    Process for manufacturing a carbon catalyst
    4.
    发明授权
    Process for manufacturing a carbon catalyst 失效
    制造碳催化剂的方法

    公开(公告)号:US5064801A

    公开(公告)日:1991-11-12

    申请号:US434682

    申请日:1989-10-24

    IPC分类号: B01D53/94 B01D53/86 B01J21/18

    CPC分类号: B01D53/8628 B01J21/18

    摘要: A process for manufacturing a carbon catalyst for use in NO.sub.x reduction with ammonia catalyzed by active carbons and active cokes is described. The new carbon catalyst exhibits improved catalytic activity and hence a higher yield in NO. In the manufacturing process, a mixture of ground, oxidized hard coal and binders is moulded, carbonized at temperatures between 700.degree. and 900.degree. C., and then activated with steam at a temperature of 800.degree. to 850.degree. C. for 45 to 100 minutes, until a degree of activation of 5 to 15% is obtained.

    摘要翻译: PCT No.PCT / EP88 / 00184 Sec。 371日期1989年10月24日第 102(e)日期1989年10月24日PCT提交1988年3月10日PCT公布。 出版物WO88 / 07410 日期:1988年10月6日。描述了通过活性炭和活性焦炭催化的氨制备用于NOx还原的碳催化剂的方法。 新的碳催化剂表现出改善的催化活性,因此NO的产率更高。 在制造过程中,将研磨的,氧化的硬煤和粘合剂的混合物成型,在700-900℃的温度下碳化,然后在800至850℃的温度下用蒸汽活化45至100 分钟,直到达到5〜15%的活化程度。

    Method for separating gas mixtures by means of a pressure changing
technique
    8.
    发明授权
    Method for separating gas mixtures by means of a pressure changing technique 失效
    通过压力变化技术分离气体混合物的方法

    公开(公告)号:US4406674A

    公开(公告)日:1983-09-27

    申请号:US384156

    申请日:1982-06-01

    IPC分类号: B01D53/04 B01D53/047

    摘要: Method for separating gas mixtures resulting from direct flow loading of adsorption reactors by means of a pressure change technique in a two stage adsorption reactor consisting of a prefilter and a separating filter, whereby strongly adsorbable impurities from the gas mixture are adsorbed in the prefilter and the remainder of the undesirable gas components are adsorbed in the separating reactor. Thereby, product gas flows off at the end of the separating reactor shortly before the passage therethrough of a non-desirable gas component. Thereafter, the prefilter and the separating reactor are disconnected and the prefilter is partially relieved by a gas counter flow and the separating reactor is partially relieved by direct gas flow. After reconnection of prefilter and separating reactor the unit is further released in the counter current, subsequently rinsed and is again brought to charge pressure in the direct or counter current. The prefilter can be prerinsed before the gas like reconnection with the separating reactor. During rinsing and pressure build up one can use relieve gas. Preferably, four coupled two stage adsorption reactors are used as well as an additional prefilter.

    摘要翻译: 在由预过滤器和分离过滤器组成的两级吸附反应器中通过压力变化技术分离由吸附反应器的直接流动负载产生的气体混合物的方法,其中来自气体混合物的强吸附杂质被吸附在预过滤器中,并且 剩余的不需要的气体组分被吸附在分离反应器中。 因此,产物气体在不期望的气体组分通过之前不久就在分离反应器的末端流出。 此后,预过滤器和分离反应器被断开,并且预过滤器被气体逆流部分地释放,并且分离反应器被直接气流部分地释放。 在重新连接预过滤器和分离反应器之后,将单元进一步在逆流中释放,随后漂洗并再次以直流或逆流充电。 预过滤器可以在气体像预分离反应器重新连接之前被预先冲洗。 在冲洗和压力建立过程中,可以使用缓解气体。 优选地,使用四个耦合的两级吸附反应器以及另外的预过滤器。

    Process for producing an active carbon catalyst
    9.
    发明授权
    Process for producing an active carbon catalyst 失效
    生产活性炭催化剂的方法

    公开(公告)号:US4921826A

    公开(公告)日:1990-05-01

    申请号:US294490

    申请日:1988-12-07

    IPC分类号: B01D53/94 B01D53/86 B01J21/18

    CPC分类号: B01D53/8628 B01J21/18

    摘要: Process for producing an active catalyst by ammonia treatment of active carbons at high temperatures, in which an active carbon/active coke is impregnated with an aqueous solution of ammonium sulphate, which can be reacted with sulphuric acid, is dried at 120.degree. C. and is then heated in an inert gas stream to temperatures above 350.degree. C. Application of the active carbon catalyst as a reducing and/or oxidizing catalyst, for example for NO.sub.x elimination from exhaust gases using ammonia.

    摘要翻译: PCT No.PCT / EP87 / 00269 Sec。 371日期:1988年12月7日 102(e)日期1988年12月7日PCT提交1987年5月22日PCT公布。 公开号WO87 / 07852 日期为1987年12月30日。通过在高温下氨处理活性炭来生产活性催化剂的方法,其中活性炭/活性焦炭用可与硫酸反应的硫酸铵水溶液浸渍, 在120℃下干燥,然后在惰性气流中加热至高于350℃。使用活性炭催化剂作为还原和/或氧化催化剂,例如使用氨从排气中除去NOx。