Nozzle Assembly
    1.
    发明授权
    Nozzle Assembly 失效
    喷嘴组件

    公开(公告)号:US4891170A

    公开(公告)日:1990-01-02

    申请号:US257906

    申请日:1988-10-14

    摘要: A nozzle assembly includes at least one nozzle (1) for the injection of liquid moistening medium into a flow of flue gas, especially in view of cooling the flue gas, and a body (2) for directing the moistening medium to the nozzle. Nozzle (1) and body (2) are essentially disposed in a flue-gas flow duct or the like. In the flue-gas flow duct is fitted a housing (3) which essentially surrounds nozzle (1) and body (2). Housing (3) ia provided with an an aperture (10), which can be closed by a closing means (9) and through which a jet of moistening medium passes into a flow of flue gas.

    摘要翻译: 喷嘴组件包括用于将液体润湿介质注入烟气流中的至少一个喷嘴(1),特别是考虑到冷却烟气,以及用于将润湿介质引导到喷嘴的主体(2)。 喷嘴(1)和主体(2)基本上设置在烟气流量管道等中。 在烟道气流道中装配有基本上围绕喷嘴(1)和主体(2)的壳体(3)。 壳体(3)设置有孔(10),其可以由关闭装置(9)封闭,并且润湿介质的射流通过该孔流入烟道气。

    Process for the removal of sulfur dioxide from hot flue gases
    2.
    发明授权
    Process for the removal of sulfur dioxide from hot flue gases 失效
    从热烟道气中除去二氧化硫的工艺

    公开(公告)号:US5002743A

    公开(公告)日:1991-03-26

    申请号:US429564

    申请日:1989-10-31

    IPC分类号: B01D53/50

    CPC分类号: B01D53/501

    摘要: The invention relates to a process for the removal of sulfur dioxide from hot flue gases (8) which have been obtained by burning a sulfur-containing substance (4) in a boiler (1). In the process, a substance (6), such as lime or limestone, which reacts with sulfur dioxide to form a solid product is fed into the boiler or into the reaction zone (2) subsequent to the boiler, the hot flue gases (8) are cooled in the reaction zone (2) by feeding into it at maximum such an amount of water as the hot flue gases are capable of evaporating, and the substantially dry solid products are separated (3) in the form of dust (10) from the cooled flue gases. According to the invention, the flue gases (11) thus obtained are scrubbed (13) with an alkaline aqueous solution (15) in order to remove the remaining sulfor dioxide and dust from the flue gases, and part (9') of the cycled scrubbing solution (9) is fed into the boiler (1) or the reaction zone (2) in order to evaporate the water from this solution.

    Method of reducing Nox compounds in flue gases of recovery boiler
    8.
    发明授权
    Method of reducing Nox compounds in flue gases of recovery boiler 失效
    还原锅炉废气中Nox化合物的方法

    公开(公告)号:US06517793B1

    公开(公告)日:2003-02-11

    申请号:US09646406

    申请日:2000-09-18

    IPC分类号: C01C300

    CPC分类号: D21C11/06 D21C11/12

    摘要: A method of reducing NOX compounds in the odor gases of a recovery boiler. In the method, ammonia in the odor gases is separated before the odor gases are combusted, the ammonia being then introduced into a recovery boiler at the pulp mill or in a separate catalyzer, where the ammonia reacts with nitrogen oxide forming water and molecular nitrogen.

    摘要翻译: 一种减少回收锅炉臭气中NO x化合物的方法。 在该方法中,在气味气体燃烧之前,气味气体中的氨被分离,然后将氨引入到纸浆厂或单独的催化剂中的回收锅炉中,氨与氮氧化物形成水和分子氮反应。

    Process for removing nitrogen oxides from the flue gases of a pulp mill
    9.
    发明授权
    Process for removing nitrogen oxides from the flue gases of a pulp mill 失效
    从纸浆厂的烟道气中除去氮氧化物的方法

    公开(公告)号:US5639434A

    公开(公告)日:1997-06-17

    申请号:US510815

    申请日:1995-08-03

    IPC分类号: B01D53/56 C01D5/14 C01B21/00

    摘要: Process for removing nitrogen oxides from the flue gases of a soda recovery boiler of a pulp mill. In the method, to the flue gases of the soda recovery boiler is at first fed an oxidizing agent, such as chlorine dioxide or ozone, which oxidizes nitrogen oxide to nitrogen dioxide. Subsequently, the flue gases are led into a flue gas scrubber, in which a reagent coming from the circulation of chemicals of the pulp mill is injected into the flue gases, which reagent brought into contact with the nitrogen dioxide reduces the nitrogen dioxide to nitrogen. The flue gas containing nitrogen is led out of the scrubber and the oxidized reagent is led back to the circulation of chemicals of the pulp mill.

    摘要翻译: 从纸浆厂的苏打水回收锅炉的废气中除去氮氧化物的方法。 在该方法中,苏打水回收锅炉的烟道气首先进料氧化剂如二氧化氯或臭氧,将氧化氮氧化成二氧化氮。 随后,将烟道气引入烟道气洗涤器中,其中来自纸浆厂的化学品循环的试剂被注入到烟道气中,该试剂与二氧化氮接触将二氧化氮还原成氮气。 含有氮气的烟气从洗涤器中引出,氧化的试剂被引回到纸浆厂的化学品的循环中。