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1. 发明申请

US20060149106A1 Toluene disproportionation process utilizing mild sulfiding during startup 失效
公开(公告)号：US20060149106A1
公开(公告)日：2006-07-06
申请号：US11030707
申请日：2005-01-06
申请人： Xin Xiao , Becky Fussell , James Butler , Brandi Gomez
发明人： Xin Xiao , Becky Fussell , James Butler , Brandi Gomez
IPC分类号： C07C5/22
CPC分类号： B01J29/24 , B01J37/20 , C07C6/123 , C07C6/126 , C07C2529/18 , C07C2529/22 , Y02P20/52 , C07C15/08
摘要： A process for the disproportionation of toluene over a nickel-modified mordenite catalyst which has been pretreated with mild sulfiding procedure. The sulfur dose is employed in a minor amount relative to the nickel content of the catalyst. The modified mordenite catalyst is contacted with a sulfur-containing compound such as hydrogen sulfide or dimethyldisulfide (DMDS) under pretreatment conditions involving a temperature of at least 100° C. The sulfur-containing compound is employed in a relatively small amount to passivate only a minor portion of the active nickel sites. A toluene-containing feedstock is brought into contact with the pretreated catalyst under conditions effective for the disproportionation of toluene and a disproportionation product is removed from contact with the catalyst. The mordenite catalyst contains nickel in an amount within the range of 0.1-2 wt. %. The catalyst may contain another metal such as palladium or platinum, or a lanthanide series metal such as lanthanum or cerium. Pretreatment of the catalyst may be carried out by flowing a fluid pretreatment stream having a sulfur component into contact with the catalyst. The pretreatment stream comprises hydrogen sulfide or a thio compound which is converted to hydrogen sulfide under the pretreatment conditions.

2. 发明授权

US07576249B2 Toluene disproportionation process utilizing mild sulfiding during startup 失效
标题翻译：启动时使用轻度硫化的甲苯歧化过程
公开(公告)号：US07576249B2
公开(公告)日：2009-08-18
申请号：US11030707
申请日：2005-01-06
申请人： Xin Xiao , Becky Fussell , James Butler , Brandi Gomez
发明人： Xin Xiao , Becky Fussell , James Butler , Brandi Gomez
IPC分类号： C07C6/12
CPC分类号： B01J29/24 , B01J37/20 , C07C6/123 , C07C6/126 , C07C2529/18 , C07C2529/22 , Y02P20/52 , C07C15/08
摘要： A process for the disproportionation of toluene over a nickel-modified mordenite catalyst which has been pretreated with mild sulfiding procedure. The sulfur dose is employed in a minor amount relative to the nickel content of the catalyst. The modified mordenite catalyst is contacted with a sulfur-containing compound such as hydrogen sulfide or dimethyldisulfide (DMDS) under pretreatment conditions involving a temperature of at least 100° C. The sulfur-containing compound is employed in a relatively small amount to passivate only a minor portion of the active nickel sites. A toluene-containing feedstock is brought into contact with the pretreated catalyst under conditions effective for the disproportionation of toluene and a disproportionation product is removed from contact with the catalyst. The mordenite catalyst contains nickel in an amount within the range of 0.1-2 wt. %. The catalyst may contain another metal such as palladium or platinum, or a lanthanide series metal such as lanthanum or cerium. Pretreatment of the catalyst may be carried out by flowing a fluid pretreatment stream having a sulfur component into contact with the catalyst. The pretreatment stream comprises hydrogen sulfide or a thio compound which is converted to hydrogen sulfide under the pretreatment conditions.
摘要翻译：一种已经用轻度硫化方法预处理的镍改性丝光沸石催化剂歧化甲苯的方法。硫剂量相对于催化剂的镍含量少量使用。在包括至少100℃的温度的预处理条件下，将修饰的丝光沸石催化剂与硫化氢或二甲基二硫化物（DMDS）等含硫化合物接触。含硫化合物的使用量较少，仅钝化次要部分的活性镍位点。使含甲苯的原料在有效用于歧化甲苯的条件下与预处理的催化剂接触，并且歧化产物被除去与催化剂接触。丝光沸石催化剂含有0.1-2重量％范围内的量的镍。％。催化剂可以含有另一种金属如钯或铂，或镧系金属如镧或铈。可以通过使具有硫成分的流体预处理流与催化剂接触来进行催化剂的预处理。预处理流包含硫化氢或在预处理条件下转化为硫化氢的硫代化合物。

3. 发明申请

US20060111233A1 Removal of nitrogen and sulfur contamination from catalysts by hot hydrogen stripping 审中-公开
标题翻译：通过热氢汽提除去催化剂中的氮和硫污染物
公开(公告)号：US20060111233A1
公开(公告)日：2006-05-25
申请号：US10993328
申请日：2004-11-19
申请人： Xin Xiao , Brandi Gomez , Charles Comeaux , Becky Fussell
发明人： Xin Xiao , Brandi Gomez , Charles Comeaux , Becky Fussell
IPC分类号： B01J38/10
CPC分类号： B01J38/10 , B01J29/22 , B01J38/02
摘要： Nitrogen and optionally sulfur contamination can be removed from catalysts, such as spent and regenerated catalysts, by stripping them with a hydrogen-containing stream at high temperatures, such as between about 100 to about 600° C. Lower pressures such as a gauge pressure below about 10 MPa favors nitrogen removal, whereas relatively higher pressure, for instance from about 0.5 MPa to about 8 MPa encourages sulfur removal. The metal dispersion, increased after the hot hydrogen stripping of the spent catalyst.
摘要翻译：氮气和任选的硫污染物可以从诸如废旧催化剂和再生催化剂的催化剂中通过在高温例如约100至约600℃之间的含氢流中汽提来除去。较低的压力例如表压低于约10MPa有利于除氮，而相对较高的压力，例如约0.5MPa至约8MPa，可以促进除硫。金属分散体在废催化剂的热氢汽提后增加。

4. 发明授权

US06803493B1 Toluene disproportion process 失效
标题翻译：甲苯不成比例过程
公开(公告)号：US06803493B1
公开(公告)日：2004-10-12
申请号：US10642030
申请日：2003-08-15
申请人： Xin Xiao , Becky Fussell
发明人： Xin Xiao , Becky Fussell
IPC分类号： C07C552
CPC分类号： C07C6/123 , C07C2529/18 , C07C2529/22 , C07C2529/24 , C10G2400/30 , C07C15/08
摘要： A process for the disproportionation of toluene over a mordenite catalyst with a feedstock of a lower than normal toluene content and having a significant content of non-aromatic hydrocarbons, having from 6-8 carbon atoms. A toluene feedstock and a hydrogen co-feed are supplied to reaction zone containing a mordenite disproportionation catalyst. The feedstock has a toluene content of 80-90 wt. % and a C6-C8 non-aromatic content of 10-20 wt. %. The reaction zone is at temperature and pressure effective to cause a disproportionation of the toluene to benzene and xylene with the concomitant cracking of the non-aromatic hydrocarbons to lower molecular weight hydrocarbons. A product stream comprising toluene, benzene, xylene and C2-C4 aliphatic hydrocarbons is recovered from the reaction zone. The mordenite catalyst is promoted with a metal such as nickel, palladium or platinum to enhance the hydrogenation activity of the catalyst.
摘要翻译：一种使用低于正常甲苯含量的原料在丝光沸石催化剂上歧化甲苯并具有含6-8个碳原子的非芳族烃的显着含量的方法。将甲苯原料和氢共同进料供给到含有丝光沸石歧化催化剂的反应区。原料的甲苯含量为80-90wt。％和C 6 -C 8非芳族含量为10-20重量％。％。反应区的温度和压力有效地使甲苯歧化成苯和二甲苯，伴随着非芳族烃转化为较低分子量的烃。从反应区回收包含甲苯，苯，二甲苯和C 2 -C 4脂族烃的产物流。用镍，钯或铂等金属促进丝光沸石催化剂，以提高催化剂的氢化活性。

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