Desulfurization absorption tower
    1.
    发明授权

    公开(公告)号:US10201783B2

    公开(公告)日:2019-02-12

    申请号:US15828547

    申请日:2017-12-01

    摘要: A desulfurization absorption tower, a method for setting up the same and a method for operating the same. The tower may include an internal anti-corrosion layer that may be used for contacting the flue gas and the desulfurization absorption liquid, may define the tower chamber, and may include stainless steel plate whose thickness is 1.0 mm to 6.0 mm. The tower body may include an external supporting layer that may be used for supporting the anti-corrosion layer and may include carbon steel. The supporting layer and the anti-corrosion layer may be designed to jointly bear a load, wherein the supporting layer may be designed to bear a large part of the load, and the anti-corrosion layer may be designed to bear a small part of the load.

    Removal of acid gases in dry scrubbing of hot gases
    4.
    发明授权
    Removal of acid gases in dry scrubbing of hot gases 失效
    去除热气体干洗中的酸性气体

    公开(公告)号:US4795619A

    公开(公告)日:1989-01-03

    申请号:US28572

    申请日:1987-03-20

    申请人: Bernard J. Lerner

    发明人: Bernard J. Lerner

    摘要: A method and apparatus for removing acid gases such as halogen acids and sulfur oxides from a hot flue gas by contacting the gas with a finely-divided, pre-moistened and partially-agglomerated, intimate mixture of a solid alkaline reagent and a deliquescent compound. The dry akaline reactang/deliquescent compound mix is pre-conditioned by exposure to a gas of controlled humidity for a time sufficient to cause partial liquefaction of the deliquescent compound. Contact at controlled humidity conditions may be effected in a treating vessel or in a transport duct prior to injection into the hot flue gas. Alternatively, the dispersed deliquescent compound may be separately liquefied prior to mixing with the alkaline solids. Liquefaction of the deliquescent compound is achieved by controlling the partial pressure of water vapor in the conditioning gas mixture at a level higher than the equilibrium vapor pressure of the liquefied deliquescent material or its highest hydrate. In these moistening methods, the ratio of deliquescent to alkaline solids feed rates is so adjusted as to avoid the buildup of wetted material on the duct walls.

    摘要翻译: 通过使气体与固体碱性试剂和潮解化合物的细分,预润湿和部分团聚的紧密混合物接触,从热烟道气中除去卤素酸和硫氧化物等酸性气体的方法和装置。 干燥的碱性反应/潮解混合物通过暴露于受控湿度的气体预处理足以引起潮解化合物部分液化的时间。 在受控湿度条件下的接触可以在注入热烟道气之前在处理容器或运输管道中进行。 或者,分散的潮解化合物可以在与碱性固体混合之前单独液化。 潮解化合物的液化是通过将调节气体混合物中的水蒸气的分压控制在高于液化的潮解材料的平衡蒸气压或其最高水合物的水平来实现的。 在这些润湿方法中,潮解剂与碱性固体进料速率的比例进行了如此调整,以避免润湿材料在管道壁上积累。

    Process for purifying a sulfur dioxide containing gas with production of
elemental sulfur
    5.
    发明授权
    Process for purifying a sulfur dioxide containing gas with production of elemental sulfur 失效
    用生成元素硫来净化含二氧化硫的气体的方法

    公开(公告)号:US4174383A

    公开(公告)日:1979-11-13

    申请号:US717943

    申请日:1976-08-26

    摘要: Process for purifying SO.sub.2 -containing gas comprising a first step of contacting said gas with an aqueous solution of an ammonium sulfite or an ammonium thiosulfate also containing ammonium sulfate, a second step of contacting the resulting solution with a H.sub.2 S-containing gas at 20.degree.-90.degree. C. to produce sulfur which is separated from the remaining solution, a third step of recyling 90 to 99.99% by volume of said remaining solution to the first step, and a fourth step of introducing 0.01 to 10% by volume of said remaining solution into a molten salt formed of ammonium sulfate and/or bisulfate so as to produce a gas containing SO.sub.2, ammonia, sulfur and steam, which is recycled to the first step.

    摘要翻译: 包括用于纯化含SO 2的气体的方法,包括使所述气体与还含有硫酸铵的亚硫酸铵或硫代硫酸铵的水溶液接触的第一步骤,第二步是使所得溶液与含有H 2 S的气体在20℃下接触, 90℃,以产生与剩余溶液分离的硫,第三步骤,将90至99.99体积%的剩余溶液重新循环至第一步骤;第四步骤,将0.01至10体积%的所述剩余溶液 溶液形成由硫酸铵和/或硫酸氢盐形成的熔盐,以产生含有SO 2,氨,硫和蒸汽的气体,其被再循环到第一步。

    Gas treatment apparatus
    6.
    发明授权
    Gas treatment apparatus 失效
    气体处理装置

    公开(公告)号:US3966418A

    公开(公告)日:1976-06-29

    申请号:US553958

    申请日:1975-02-28

    摘要: A gas treatment apparatus suitable for removing sulfur oxides and dust from gas streams is disclosed. The gas to be treated is conveyed through a conduit and past at least one nozzle positioned in fluid communicaton with the interior of the conduit. The nozzle injects an atomized solution, such as an alkali metal carbonate solution, into the gas. Solids formed by contacting the gas with the solution collect on the inner surface of a conical funnel-shaped portion of a hollow body. The hollow body includes a conduit portion in coaxial alignment with the hollow body. The solids are first removed from the hollow body by a screw conveyer positioned on the conical funnel-shaped portion and then withdrawn through a solids exit port. Gases formed by the contact of the gas with the injected solution are removed through a gas exit port in the hollow body and a gas passageway defined by the inner surface of the hollow body and the outer surface of the conduit portion.

    摘要翻译: 公开了一种适用于从气流中除去硫氧化物和灰尘的气体处理装置。 待处理的气体通过导管输送并且经过位于与导管内部流体通信的至少一个喷嘴。 喷嘴将诸如碱金属碳酸盐溶液的雾化溶液注入到气体中。 通过使气体与溶液接触而形成的固体聚集在中空体的锥形漏斗形部分的内表面上。 中空体包括与中空体同轴对准的导管部分。 首先通过位于锥形漏斗形部分上的螺旋输送机从中空体中除去固体,然后通过固体出口吸出。 通过气体与注射溶液的接触形成的气体通过中空体中的气体排出口和由中空体的内表面和导管部分的外表面限定的气体通道被去除。

    Composition and process for removing sulfur dioxide from combustion gases
    8.
    发明授权
    Composition and process for removing sulfur dioxide from combustion gases 失效
    从燃烧气体中除去二氧化硫的组成和方法

    公开(公告)号:US3962112A

    公开(公告)日:1976-06-08

    申请号:US500653

    申请日:1974-08-26

    IPC分类号: B01D53/50 C01B17/56 B01D53/34

    CPC分类号: B01D53/507

    摘要: A process and composition for removing sulfur dioxide from combustion gases particularly those emitted from the burning of high sulfur coal. The gases are treated with a liquid composition comprising 1 to 10 pounds of ClO.sub.2 per hundred pounds of SO.sub.2 to be treated and from 5 to 40 pounds of detergent per pound of ClO.sub.2. The composition is preferably alkaline, and may be injected as an atomized spray into the stack carrying gases, to preferably produce a stack gas of a pH between 7.0 and 7.5. The composition may also include 0.1 to 40 pounds of alkali per pound of ClO.sub.2 and 0.1 to 20 pounds of ammonia per pound of ClO.sub.2. Additionally, 1 to 30 pounds of an organic solvent per pound of ClO.sub.2 may be added.

    Process for recovering so2 from waste gases
    10.
    发明授权
    Process for recovering so2 from waste gases 失效
    从废气中回收二氧化硫的方法

    公开(公告)号:US3627464A

    公开(公告)日:1971-12-14

    申请号:US3627464D

    申请日:1967-11-09

    申请人: WELLMAN LORD INC

    摘要: PROCESS AND APPARATUS FOR THE RECOVERY OF SULFUR DIOXIDE FROM SO2-CONTAINING GASES IN A SYSTEM INVOLVING CONTACTING THE GAS WITH AN AQUEOUS SULFITE SOLUTION TO PRODUCE A SOLUTION OF THE CORRESPONDING BISULFITE WHICH IS A PRECURSOR OF SO2 AND SUBSEQUENTLY SEPARATING THE BISULFITE AND SO2-PARTIAL PRESSURE LOWING MATERIALS TO OBTAIN PURER BISULFITE WHICH IS THEN DECOMPOSED TO REGENERATE SULFUR DIOXIDE. EXAMPLES OF SULFITES INCLUDE POTASSIUM, CESIUM, AND RUBIDIUM SULFITES. IN THE PROCESS SEPARATION OF THE BISULFITE IS ACCOMPLISHED BY VAPORIZATION OF WATER FROM THE BISULFITE-CONTAINING SOLUTION, E.G. IN A FLASH CHAMBER TO SUPERSATURATE THE SOLUTION AND PRECIPITATE THE BISULFITE, E.G. IN AN AMOUNT EQUIVALENT TO THE AMOUNT OF THE SULFUR DIOXIDE REMOVED FROM THE WASTE GASES. CONDITIONS ARE CHOSEN TO PRECIPITATE CRYSTALS HAVING A SIZE SUITABLE FOR VACUUM DRUM FILTERING. THE CRYSTALS ARE ADVANTAGEOUSLY REDISSOLVED PRIOR TO HEATING TO REGENERATE THE SULFUR DIOXIDE AND A PORTION OF THIS SOLUTION IS USED TO WASH THE CRYSTALS ON THE DRUM FILTER AND IMPROVE THE PURITY THEREOF.