Method and apparatus for separating gases
    1.
    发明授权
    Method and apparatus for separating gases 有权
    用于分离气体的方法和装置

    公开(公告)号:US08518155B2

    公开(公告)日:2013-08-27

    申请号:US11686982

    申请日:2007-03-16

    Abstract: A method and apparatus for removing carbon dioxide from a synthesis gas stream containing hydrogen is disclosed. The method includes absorbing the carbon dioxide using a physical solvent under high pressure and then liberating the carbon dioxide in a series of expansion stages where the pressure on the solvent is reduced. The expansion ratio increases with each expansion stage. The apparatus includes expansion stages having throttling devices and expansion tanks operated at increasing expansion ratios. Carbon dioxide is liberated in this manner so as to minimize the energy required compress for transport via a pipe line for sequestration of the gas. Sequestration of the carbon dioxide is preferred to atmospheric venting to curb the release of greenhouse gases.

    Abstract translation: 公开了一种从含有氢的合成气流中除去二氧化碳的方法和装置。 该方法包括在高压下使用物理溶剂吸收二氧化碳,然后在溶剂压力降低的一系列膨胀阶段释放二氧化碳。 膨胀比随着每个膨胀阶段的增加而增加。 该装置包括具有节流装置和膨胀箱的膨胀级,膨胀箱以增加的膨胀比运行。 以这种方式释放二氧化碳,以便最小化用于通过用于气体隔离的管道输送的所需压缩物。 二氧化碳的封存优于大气排放,以遏制温室气体的释放。

    Integration of catalytic CO2 oxidation and oxyfuel sour compression
    10.
    发明授权
    Integration of catalytic CO2 oxidation and oxyfuel sour compression 有权
    催化SO2氧化和含氧燃料酸压缩的整合

    公开(公告)号:US08282901B2

    公开(公告)日:2012-10-09

    申请号:US12832096

    申请日:2010-07-08

    Abstract: Sulfur dioxide (SO2) may be removed from carbon dioxide feed gas by contacting the carbon dioxide at an elevated temperature and an elevated pressure with a catalyst for oxidizing SO2, in the presence of oxygen (O2) to convert SO2 to sulfur trioxide (SO3); contacting SO3 in the resultant SO3-enriched carbon dioxide gas with water to produce sulfuric acid and SO2-depleted carbon dioxide gas; and separating the sulfuric acid from the SO2-depleted carbon dioxide gas. If present, NOx is also removed from the carbon dioxide feed gas as nitric acid to produce SO2-depleted, NOx-lean carbon dioxide gas. The method has particular application in the removal of SO2 and NOx from flue gas produced by oxyfuel combustion of a hydrocarbon fuel or carbonaceous fuel, within or downstream of the CO2 compression train of a CO2 recovery and purification system.

    Abstract translation: 二氧化碳(SO2)可以通过在升高的温度和升高的压力下与二氧化碳在氧气(O 2)的存在下与用于氧化SO 2的催化剂接触来从二氧化碳进料气体中除去,以将SO 2转化为三氧化硫(SO 3) ; 使所得的富含SO3的二氧化碳气体中的SO3与水接触,产生硫酸和二氧化硫的二氧化碳气体; 并从硫酸二氧化碳气体中分离硫酸。 如果存在,也将NO x从二氧化碳进料气体中除去,作为硝酸生成贫SO 2的二氧化碳气体。 该方法特别适用于在二氧化碳回收和净化系统的二氧化碳压缩系列内或下游的烃燃料或含碳燃料的氧燃烧燃烧产生的烟气中除去SO2和NOx。

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