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    • 2. 发明申请
    • METHOD FOR THE SELECTIVE REMOVAL OF HYDROGEN SULPHIDE AND CO2 FROM CRUDE GAS
    • 工艺用于制氢选择性脱除CO2和从原料气
    • WO2004085036A3
    • 2004-11-25
    • PCT/EP2004003085
    • 2004-03-24
    • UHDE GMBHMENZEL JOHANNES
    • MENZEL JOHANNES
    • B01D53/14C01B3/52C10L3/10C10K1/14
    • C10L3/102B01D53/1406B01D53/1425B01D53/1462C01B3/52C01B2203/0415C01B2203/0485C10L3/10Y02P20/152
    • The invention relates to a method for the selective removal of hydrogen sulphide, organic sulphur constituents and CO2 from crude gas, using a first and a second absorption stage (41 and 49) for separating essentially pure C02. The aim of the invention is to provide a solution enabling hydrogen sulphide and organic sulphur compounds, inter alia, to be removed as selectively as possible. To this end, the absorbent from the first absorption stage (41), enriched with hydrogen sulfide and C02, inter alia, is pre-heated in a heat exchanger (44) at an increased pressure, with the hot, regenerated solution (12) from the desorption stage (50), and is then expanded in a high-pressure flash container (47) at the selected higher pressure. The gas flow released at the increased pressure is cooled in a condenser (48), and is then supplied to the second absorption stage (49) in which the sulphur constituents are fully removed by means of a partial flow of the regenerated absorbent (15,16,17) from the desorption stage (50). The absorbent from the second absorption stage (49) is redirected (26/27) into the desorption stage (50).
    • 有用于从粗气体使用一个第一和一个第二吸收阶段(41或49),用于基本上纯的CO 2的分离选择性除去氢硫化物,有机硫组分和CO 2的方法中,一个解决方案是用I.A.创建 硫化氢和有机硫化合物是非常选择性除去。 这是在从所述第一吸收阶段(41)的到来,I.A.实现 与硫化氢和二氧化碳在升高的压力下,该解吸阶段的富集吸收(50)的到来,再生的溶剂(12)被预热,然后在在热热交换器高压闪蒸容器(47)所选择的较高压力(44)被减压 其中所释放的在升高的压力下的气体流中的冷凝器(48)中冷却,然后将第二吸收阶段(49)被提供,其中,所述的硫成分被解吸阶段(50)的再生的吸收剂的部分流的手段来(15,16,17 )被完全去除,其中,从所述第二吸收阶段(49吸收)(在解吸阶段50)被返回(26/27)是。
    • 3. 发明申请
    • PROCESS FOR REMOVING CONTAMINANTS FROM GAS USING POLYETHYLENE GLYCOLS
    • 使用聚乙二醇从气体中除去污染物的方法
    • WO01007147A1
    • 2001-02-01
    • PCT/US2000/020416
    • 2000-07-27
    • B01D53/14C10K1/16C10L3/10C10K1/14
    • B01D53/1493B01D53/14C10K1/16C10L3/10
    • The present invention provides a process for removing gas contaminants such as hydrogen sulfide and carbon dioxide from a product gas such as natural gas or synthesis gas. According to the invention the product gas is contacted with a solvent which includes dialkyl ethers of polyethylene glycols and water, and a high pressure recycle loop is utilized to desorb a portion the gas contaminants and co-absorbed product gas from the solvent. The solvent is provided with an amount of water sufficient to increase recovery of co-absorbed product gas while at the same time providing a reduced circulation rate requirement for the solvent and reduced re-compression and cooling requirements for the recycle gas.
    • 本发明提供从诸如天然气或合成气的产物气体中除去诸如硫化氢和二氧化碳的气体污染物的方法。 根据本发明,产物气体与包括聚乙二醇和水的二烷基醚的溶剂接触,并且使用高压循环回路来将气体污染物和共吸收产物气体的一部分从溶剂中解吸。 为溶剂提供足以增加共吸收产物气体回收率的水,同时为溶剂提供降低的循环速率要求,并降低再循环气体的再压缩和冷却要求。
    • 6. 发明申请
    • ABSORBENT SYSTEM AND METHOD FOR CAPTURING CO2 FROM GAS STREAM
    • 吸收系统和从气体流中吸收二氧化碳的方法
    • WO2015190936A1
    • 2015-12-17
    • PCT/NO2015/050106
    • 2015-06-12
    • SINTEF TTO AS
    • ARONU, Ugochukwu, E.KIM, InnaHOFF, Karl AndersEINBU, Aslak
    • B01D53/14B01D53/40B01D53/48B01D53/50B01D53/52B01D53/62B01D53/73B01D53/75B01D53/77B01D53/78B01D53/80B01D53/96C01B31/20C10K1/12C10K1/14B01D53/18
    • B01D53/1425B01D53/1475B01D53/1493B01D2252/20421B01D2252/20426B01D2252/20431B01D2252/20484B01D2252/20489B01D2252/20494B01D2252/504C10K1/143Y02C10/04Y02C10/06Y02P20/152
    • The present invention relates to an absorbent, an absorbent system and a process for removing acidic gas such as CO 2 from exhaust gases from fossil fuel fired power stations, from natural gas streams, from blast furnace oven off-gases in iron/steel plants, from cement plant exhaust gas and from reformer gases containing CO 2 in mixtures with H 2 S and COS. The liquid absorbent, a mixture of amine and amino acid salt is contacted with a CO 2 containing gas in an absorber and CO 2 in the gas stream is absorbed into the liquid. The absorbed CO 2 forms more than one type of solid precipitate in the liquid at different absorption stages. In a first absorption stage solid precipitate of amine bicarbonate is formed and is withdrawn as slurry from the bottom of a first absorber section. In a second absorption stage solid precipitate of alkali metal bicarbonate is formed and withdrawn as slurry at the bottom of a second absorber section. The slurry withdrawn from the first absorption section is heated to dissolve the precipitate with CO 2 release in an amine flash regeneration tank. The slurry from the second precipitation stage is withdrawn from the bottom of the second absorber section and sent to a regenerator for desorption with CO 2 release. The lean amine and amino acid salt mixture from the flash regenerator and desorber are mixed and returned to the top of the absorber. This absorbent system improves carbon dioxide removal efficiency due to its higher CO 2 removal ability per cycle when compared with conventional amine, absorbent from organic acid neutralized with inorganic base and carbonate based absorbent system. It exhibits less solvent vaporization loss because part of the absorbent is in salt form.
    • 本发明涉及一种吸收剂,吸收剂系统和从化石燃料发电站的废气中除去二氧化碳等酸性气体的方法,从天然气流,铁/炼铁厂的高炉炉废气中除去 水泥厂废气和含H 2 S和COS混合物中的二氧化碳的重整器气体,吸收剂,胺和氨基酸盐的混合物与吸收器中的含CO 2气体接触,气流中的CO 2被吸收到液体中 。 吸收的CO2在不同吸收阶段在液体中形成多于一种类型的固体沉淀物。 在第一吸收阶段,形成固体沉淀的碳酸氢铵,并从第一吸收段的底部以淤浆的形式排出。 在第二吸收阶段,形成碱金属碳酸氢盐的固体沉淀物并在第二吸收段的底部作为浆料取出。 将从第一吸收部分排出的浆料加热,以便在胺闪蒸再生罐中释放CO 2使沉淀物溶解。 来自第二沉淀阶段的浆料从第二吸收段的底部排出并送往再生器,以释放CO 2来解吸。 将来自闪蒸再生器和解吸器的贫胺和氨基酸盐混合物混合并返回到吸收器的顶部。 与使用无机碱和碳酸盐类吸收剂体系中和的有机酸的吸收剂相比,与常规胺相比,这种吸收体系可以提高二氧化碳去除效率。 它表现出较少的溶剂蒸发损失,因为吸收剂的一部分是盐形式。