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    • 3. 发明授权
    • Process for oxidation of H.sub.2 S to sulphur
    • 硫化氢氧化方法
    • US6017507A
    • 2000-01-25
    • US860581
    • 1997-08-25
    • Jean NougayredeAndre PhilippeSabine Savin-Poncet
    • Jean NougayredeAndre PhilippeSabine Savin-Poncet
    • B01D53/86C01B17/04
    • B01D53/8612C01B17/0456C01B17/0469Y10S423/06
    • A process is provided for reducing the amount of hydrogen sulfide present in a tail gas from a sulfur recovery process. The hydrogen sulfide contaminated gas along with a gas containing free oxygen is passed through a series of hydrogen sulfide oxidation zones containing an oxidation catalyst, such as one or more oxides or salts of Ni, Co, Fe, Cu, Ag, Mn, Mo, Cr, W and V, deposited on a support, such as bauxite, activated alumina, titania and activated carbon. The initial and intermediate catalyst beds are operated adiabatically by injecting a substoichiometric amount of oxygen into the gas to be treated with respect to the amount of hydrogen sulfide present in the gas so that the temperature does not exceed 150.degree. C. The final catalyst bed is operated under conditions such that a superstoichiometric amount of oxygen is injected into the gas with respect to the hydrogen sulfide and cooling is provided so that the temperature does not exceed 150.degree. C. The invention is able to maintain an optimum selectivity toward sulfur during the catalytic oxidation of the hydrogen sulfide by controlling the temperature.
    • PCT号PCT / FR96 / 01699秒。 371日期1997年8月25日第 102(e)中的日期1997年8月25日提交的PCT 1996年10月30日的PCT公布。 公开号WO97 / 17284 日期5月15日,提供了一种用于从硫回收方法减少尾气中存在的硫化氢的量1997年a过程。 硫化氢污染气体与含游离氧气的气体一起通过含有氧化催化剂的一系列硫化氢氧化区,例如Ni,Co,Fe,Cu,Ag,Mn,Mo, 的Cr,W和V,沉积在载体上,如矾土,活性氧化铝,二氧化钛和活性碳。 初始和中间催化剂床通过注入氧的亚化学计量量的进入气体绝热操作相对于被处理以硫化氢存在的量的气体中,以使温度不超过150℃。最终催化剂床 氧的超化学计量量被注入到所述气体相对于所述硫化氢和提供冷却,以使温度不超过150℃。本发明能够在催化期间保持朝向硫的最佳选择性这样的条件下操作 通过控制温度对硫化氢进行氧化。
    • 5. 发明授权
    • Process for recovering as sulfur the compounds H2S, SO2, COS and/or CS2 in a tail gas from a sulfur plant
    • 从硫装置尾气中回收化合物H2S,SO2,COS和/或CS2的方法
    • US06444185B1
    • 2002-09-03
    • US09635884
    • 2000-08-10
    • Jean NougayredeAndré PhilippeSabine Savin-Poncet
    • Jean NougayredeAndré PhilippeSabine Savin-Poncet
    • C01B1704
    • C01B17/0456B01D53/8606B01D53/8612B01D53/8615C01B17/0469
    • A process is provided to recover residual H2S, SO2, COS and CS2 in the tail gas from a sulphur recovery process. The tail gas is oxidized and hydrolyzed at a temperature of from 180° C. to 700° C. to provide an oxidized and hydrolyzed gas stream containing substantially no COS or CS2 and having a concentration by volume of H2S and SO2 such that the H2S concentration minus twice the SO2 concentration is from 0.25% to 0.5%. Then the gas stream from the hydrolysis is passed over a Claus catalyst, for example based on alumina and/or titanium oxide, for the reaction of H2S with SO2 to form sulphur and provide a gas stream with substantially no SO2. The resulting gas stream from the Claus reaction together with a gas containing free oxygen is then passed over an oxidation catalyst, such as one of more oxides or salts of Ni, Co, Fe, Cu, Ag, Mn, Mo, Cr, W or V, deposited on a support, such as bauxite, activated aluminia, silica, titanium oxide, zirconium oxide, zeolite or activated carbon to form sulphur and release a purified gas stream containing substantially no sulphur compounds.
    • 提供了一种从硫回收过程中回收尾气中残留的H 2 S,SO 2,COS和CS 2的方法。 尾气在180℃至700℃的温度下被氧化和水解,以提供基本上不含COS或CS2并具有体积浓度的H 2 S和SO 2的氧化和水解气流,使得H 2 S浓度 减去SO2浓度的两倍是0.25%至0.5%。 然后将来自水解的气流通过克劳斯催化剂,例如基于氧化铝和/或氧化钛,以使H 2 S与SO 2反应形成硫并提供基本上不含SO 2的气流。 然后将来自克劳斯反应的所得气流与含游离氧气的气体一起通过氧化催化剂,例如Ni,Co,Fe,Cu,Ag,Mn,Mo,Cr,W或更多的氧化物或其盐之一, V,沉积在载体上,例如铝土矿,活性氧化铝,二氧化硅,氧化钛,氧化锆,沸石或活性炭,以形成硫并释放基本上不含硫化合物的纯化气流。
    • 8. 发明授权
    • Method and catalyst for catalytically oxidizing a low concentration of
H.sub.2 S in a gas to give sulphur
    • 用于催化氧化气体中低浓度H 2 S以产生硫的方法和催化剂
    • US6083471A
    • 2000-07-04
    • US875703
    • 1997-11-19
    • Andre PhilippeSabine Savin-PoncetJean NougayredeMarc LedouxCuong Pham HuuClaude Crouzet
    • Andre PhilippeSabine Savin-PoncetJean NougayredeMarc LedouxCuong Pham HuuClaude Crouzet
    • B01D53/52B01D53/86B01J27/224B01J32/00B01J37/20C01B17/04
    • B01D53/8612B01J27/224B01J37/20C01B17/0465Y10S502/517
    • A process for catalytically oxidizing the H.sub.2 S present at low concentration in a gas to sulphur wherein the gas together with a gas containing free oxygen in a quantity to provide and O.sub.2 to H.sub.2 S mole ratio ranging from 0.05 to 10 are contacted with a catalyst for selectively oxidizing H.sub.2 S to sulphur, the catalyst comprising a support based on silicon carbide associated with a catalytic active phase containing at least one transition metal such as Fe, Ni, Cr, Co, Cu, Ag, Mn, Mo, Ti, W or V, in a form of a metal compound and/or in the elemental state. Prior to treating the gas, the oxidation catalyst is subjected to an activation treatment which loads the active phase of the catalyst to provide maximum sulphurization of the metal of the catalyst. In an alternate embodiment, the oxidation of the H.sub.2 S is performed below the dew point of the sulphur. In another embodiment, the oxidation is performed at a temperature above the dew point of sulphur and in particular between 200.degree. C. and 500.degree. C. Also disclosed is a catalyst for selectively oxidizing H.sub.2 S to sulphur which comprises a catalytically active phase based on at least one transition metal such as indicated above in combination with a silicon carbide support.
    • PCT No.PCT / FR95 / 01524 Sec。 371日期:1997年11月19日 102(e)日期1997年11月19日PCT 1995年11月20日PCT PCT。 公开号WO97 / 19019 日期1997年5月29日一种催化氧化气体中硫浓度低的H 2 S的方法,其中气体与含有游离氧气的气体一起提供,O 2与H 2 S摩尔比为0.05至10,与 用于选择性地将H 2 S氧化成硫的催化剂,所述催化剂包括与包含至少一种过渡金属如Fe,Ni,Cr,Co,Cu,Ag,Mn,Mo,Ti,W的催化活性相相关的碳化硅的载体 或V,以金属化合物的形式和/或元素状态。 在处理气体之前,将氧化催化剂进行活化处理,负载催化剂的活性相以提供催化剂金属的最大硫化。 在另一个实施方案中,H2S的氧化在硫的露点之下进行。 在另一个实施方案中,氧化在高于硫的露点,特别是在200℃和500℃之间的温度下进行。还公开了一种用于选择性地将H 2 S氧化成硫的催化剂,其包含基于 至少一种过渡金属,如上所述与碳化硅载体组合。
    • 10. 发明授权
    • Process for removing sulphur compounds contained in a residual gas
    • 用于除去残留气体中所含的硫化合物的方法
    • US4980146A
    • 1990-12-25
    • US75749
    • 1987-06-25
    • Georges KvasnikoffJean NougayredeAndre Philippe
    • Georges KvasnikoffJean NougayredeAndre Philippe
    • B01D53/86C01B17/04
    • C01B17/0469B01D53/8615C01B17/0456C01B17/046C01B17/0465Y02P20/584
    • Process for removing sulfur compounds contained in a residual gas with recovery of said compounds in the form of sulfur, wherein a gas obtained from a residual gas containing H.sub.2 S and SO.sub.2 and having a temperature lower than 160.degree. C. is subjected to a catalytic CLAUS reaction phase with deposition of sulfur on the catalyst and periodic regeneration of the sulfur-laden catalyst and cooling of the regenerated catalyst. The gas brought in contact with the CLAUS catalyst is produced by subjecting the residual gas to a hydrogenation and hydrolysis treatment to provide the sulfur compounds in the unique form of H.sub.2 S and to cooling with water separation by condensation and then to catalytic oxidation of H.sub.2 S in CLAUS stoichiometry with cooling of the gas stream obtained from the oxidation step under 160.degree. C. in order to separate the sulfur by condensation. Application to the purification of the residual gases emitted by CLAUS sulfur plants.
    • PCT No.PCT / FR86 / 00365 Sec。 371日期1987年6月25日第 102(e)日期1987年6月25日PCT提交1986年10月24日PCT公布。 公开号WO87 / 02653 日期:1987年5月7日。通过回收硫形式的所述化合物来除去残留气体中所含的硫化合物的方法,其中从含有H 2 S和SO 2的残余气体获得的温度低于160℃的气体为 经过催化CLAUS反应相,同时在催化剂上沉积硫并周期性地再生含硫催化剂并冷却再生催化剂。 与CLAUS催化剂接触的气体是通过使残余气体进行氢化和水解处理以提供独特形式的硫化氢的硫化合物,并通过冷凝进行水分离冷却,然后在CLAUS中催化氧化H 2 S, 通过在160℃下从氧化步骤获得的气流冷却来进行化学计量,以便通过冷凝分离硫。 应用于CLAUS硫磺植物排放的残留气体的净化。