CN85109423A - 用抗硫化物催化剂生产甲烷的工艺以及实现该工艺的催化剂 - Google Patents
用抗硫化物催化剂生产甲烷的工艺以及实现该工艺的催化剂 Download PDFInfo
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- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 9
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- 230000003197 catalytic effect Effects 0.000 description 2
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- 150000002739 metals Chemical class 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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Abstract
一种利用抗硫化物催化剂生产甲烷的工艺方法。此法是将一种主要含有一氧化碳、氢和硫化物的混合物与含有一种从钼、钒或钨中选出的金属(也可能还会含有由钴和/或镍组成的活性促进剂)并被沉积在二氧化铈载体上所构成的抗硫化物催化剂相接触,在温度约为250~650℃、压力约为5~140巴的条件下进行反应。本工艺方法大大提高了有利于生成甲烷的选择性,从而能有效地合成甲烷。
Description
本发明主要涉及一种利用抗硫或抗硫化物的催化剂生产甲烷或生产含甲烷的气体混合物的工艺。
本发明还以实现此种生产工艺的催化剂为其目标。
众所周知,可以用主要由一氧化碳、氢、水和含硫化合物等组分组成的气体混合物来合成甲烷。还知道上述气体混合物可以主要由煤的气化而获得,然后将此气体混合物与能活化此合成反应的催化剂相接触来实现甲烷的生产。
为此目的,已提出多种催化剂。但是,业已发现,由于含硫化合物的存在,这些催化剂很快就会被消耗掉或失去活性。
因此,已提出种种催化剂用于甲烷化反应例如:沉积在氧化铝(Al2O3)载体上的以钼和/或镍为基本组分的催化剂。但就它们的活性以及有利于生成甲烷的选择性来说,均远远不能令人满意。
因此,本发明的目的是提供一种利用抗硫化合物的催化剂来生产甲烷的工艺,从而解决这个麻烦。这些催化剂对一氧化碳的转化率、生成甲烷的选择性以及催化剂对使用时间的稳定性等方面都可产生显著的效果。
为此目的,本发明的主要内容是用一种主要含有一氧化碳、氢以及硫化物的初始混合物来生产甲烷或生产含甲烷的混合物的工艺过程。其特征在于,在温度约为250~650℃、压力约为5~140巴的条件下,将上述初始混合物与含有一种从钼、钒或钨中选出的金属(也可能还含有由钴和/或镍组成的活性促进剂)并被沉积在二氧化碳铈载体上所构成的抗硫化物催化剂接触进行反应。
正如在下文将要看到的,由于本发明采用了沉积在二氧化铈载体上的催化剂,所以用本工艺方法所获得的以生产甲烷计的选择性比过去采用的各种工艺方法所获得的选择性要高得多。
根据本发明工艺的另一特点,反应是在空速(反应混合物体积/催化剂体积/小时)约为100~15000小时-1、氢气与一氧化碳的摩尔比至少等于0.3,最好为1的条件下实现的。
根据一个最佳实施方案,反应是在空速为4750小时-1、氢对一氧化碳的摩尔比等于1、压力为30巴以及温度为300~600℃,最好为500℃的条件下进行的。
本发明还涉及以能满足上述两个特点中任意一个,并实现该工艺过程的催化剂为其目标。此种催化剂的特征在于它可以用下面各式表示:×/CeO2、×/Co/CeO2、×/Ni/CeO2或×Co/Ni/CeO2,式中,×代表钼、钒或钨;其特征还在于上述催化剂由下述特性所限定:
-CeO2载体的BET(布鲁瑙厄-埃梅特-泰勒比表面测定法)比表面积在10米2/克以上;
-总孔隙体积大约为0.15~0.5厘米3/克;
-填充密度大约为0.5~2.5
-上述×金属对铈的原子比大约为1/50~1/4;
-活性促进剂金属(钴和/或镍)对×金属的原子比为0~1。
根据推荐的最佳实施方案,上述催化剂的BET比表面积等于50米2/克、其总孔隙体积为0.3~0.4厘米3/克、填充密度为1~2、×金属对铈的原子比为1/20~1/7,而活性促进剂金属对×金属的原子比为0.1~0.5。
此催化剂可以用各种常规的技术制备,特别是可以用所需要加入的那些金属的产物母体溶液浸渍载体进行制备。
本发明的其它特点及优点将在下述的实例中更好地体现出来,但不应认为:本发明的范围仅限于此实例。
首先制备出沉积在二氧化铈载体上的三种催化剂,即钼/二氧化铈催化剂、钴/钼/二氧化铈催化剂和镍/钼/二氧化铈催化剂。
Mo/CeO2催化剂的BET比表面积为42米2/克、总孔隙体积为0.14厘米3/克、填充密度为1.83而钼含量为3.6%(以重量计)。
Co/Mo/CeO2催化剂的BET比表面积为39米2/克、用水测定的孔隙体积为0.11厘米3/克而填充密度为1.92。
最后一个是Ni/Mo/CeO2催化剂,其BET比表面积为37米2/克、用水测定的孔隙体积为0.11厘米3/克而填充密度为1.95。
然后,进行催化试验,其目的是将上述三种催化剂的性能与已知的各种氧化铝基或铝基催化剂的性能进行比较,后者的表达式为:Mo/Al2O3、Co/Mo/Al2O3和Ni/Mo/Al2O3和Ce/Mo/Al。
催化试验的目的是通过限备甲烷时催化剂的活性及选择性来比较上述所有催化剂的性能。该试验在第一阶段(表1的条件)使其体积组成为CO 37.25%、H237.25%、H2O 25%和H2S 0.25%的反应混合物与所有上述催化剂接触;而在第二阶段(表2的条件)则是使体积组成为:CO 49.75%、和H2S 0.5%的反应混合物与上述催化剂进行接触。
反应是在空速为4750小时-1、压力为30巴以及温度为500℃的条件下进行的。各种催化剂都预先在350℃的条件下,用在氢气中的浓度为1.3%的H2S与氢气的混合物在流量为10升/小时下进行过6小时的预硫化处理。
用一冷凝器将水分离出来,用气相色谱分析流出的气体。这就能够测出各组分特别是CO、CO2、CH4、C2H6和C3H8的比例。
此分析结果,一方面可用以计算由下述比率式所定义的一氧化碳百分转化率:(%)
tco= (消耗的CO摩尔数)/(加入的CO摩尔数) ×100
另一方面,也可用以计算由下述比率式所定义的生成CH4的选择性:(%)
下文中的表1和表2列出了用前述各种催化剂,在相当于它们操作或工作了20小时的老化之前与老化之后进行试验时,所得到的试验结果。
表1所列数据清楚地表明,本发明的各种催化剂在一氧化碳转化率和生成甲烷的选择性以及对操作时间的稳定性等方面均优于先有工艺所采用的各种催化剂。
更应当着重指出的是,Mo/CeO2催化剂不仅比不含二氧化铈载体的前三个先有工艺所采用的催化剂优越而且也优于表1中所列的第四种先有工艺所采用的以铈、钼和铝为基质的催化剂。
就Co/Mo/CeO2和Ni/Mo/CeO2催化剂来说,如果也与先有工艺所采用的催化剂特别是与沉积在氧化铝上的含有钼的Co或Ni催化剂相比,它们的优越性在表中也可以清楚地看到。这两种催化剂生成甲烷的选择性可达32~36%,一氧化碳转化率可达80%以上。
表2所列数据(初始混合物中不含水)表明,一氧化碳转化率到85%以上,明显地优于先有工艺采用的催化剂所达到的水平。在对操作时间的稳定性方面,本发明催化剂的试验结果也是比较好的。
在表2中,生成甲烷的选择性与过去工艺所用催化剂的选择性大致相同,在各种情况下它们均达到了热力学极限。
因此,根据本发明提出了一种甲烷化的工艺。该工艺利用一种能够有效地抗硫化物,例如,在起始混合物中H2S、COS、CS2、CH3S…等的含量可以超过4%(以硫计的摩尔百分数)非常稳定的以二氧化铈为载体的催化剂,从而能多生产相当数量的甲烷。
必须理解,本项发明绝不仅仅局限于上文所述的实施方案或实施例。
因此,在本发明中所规定的各种催化剂的表达式中,用钒或钨来代替钼时,所获得的试验结果以及催化剂的性能接近。同样,在催化剂中合并应用两种活性促进剂金属(钴和镍)代替使用单一的促进剂金属时,它们的有利于生成甲烷的活性也非常相近。
所以,如果根据本发明的要点,进行同样内容的工作时,则本发明就既包括了上述工艺中所有的单一的等效技术也包括了这些技术组合。
Claims (5)
1、一种由主要含有一氧化碳、氢和硫化物的初始混合物生产甲烷或含甲烷的气体混合物的工艺方法,其特征在于使上述初始混合物与含有一种从钼、钒或钨中选出的金属(也可能还含有由钴和/或镍组成的活性促进剂)并被沉积在二氧化铈载体上所构成的抗硫化物催化剂相接触,在温度约为250~650℃、压力约为5~140巴的条件下进行反应。
2、根据权利要求1的一种工艺方法,其中所述的反应条件为:空速约从100至15000小时-1、氢对一氧化碳的摩尔比至少等于0.3,最好为1。
3、根据权利要求1或2的一种工艺方法,其中所述的反应条件为:空速等于4750小时-1、氢对一氧化碳的摩尔比等于1、压力等于30巴而温度在300至600℃之间,最好为500℃。
4、一种用于根据权利要求1至3中任意一项的实现该工艺的催化剂,其特征在于它的组成可由下列表达式示出:×/CeO2、×/Co/CeO2、×/Ni/CeO2或×/Co/Ni/CeO2,式中×代表钼、钒或钨;其特征还在于上述催化剂由下述特性所限定:
-CeO2载体的BET比表面积在10米2/克以上;
-总孔隙体积约为0.15~0.5厘米3/克;
-填充密度约为0.5~2.5;
-上述×金属对铈的原子比约为1/50~1/4;以及
-活性促进剂金属(Co和/或Ni)对×金属的原子比为0~1。
5、根据权利要求4的一种催化剂,其特征在于所述的BET比表面积等于50米2/克、所述的总孔隙体积为0.3~0.4厘米3/克、填充密度为1~2、×金属对铈的原子比为1/20~1/7以及活性促进剂金属对×金属的原子比为0.1~0.5。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FR8420069 | 1984-12-28 | ||
FR8420069A FR2575464B1 (fr) | 1984-12-28 | 1984-12-28 | Procede de production du methane a l'aide d'un catalyseur thioresistant et catalyseur pour la mise en oeuvre de ce procede |
FRN0842006.9 | 1984-12-28 |
Publications (2)
Publication Number | Publication Date |
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CN85109423A true CN85109423A (zh) | 1986-06-10 |
CN1006547B CN1006547B (zh) | 1990-01-24 |
Family
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CN85109423A Expired CN1006547B (zh) | 1984-12-28 | 1985-12-28 | 应用抗硫催化剂生产甲烷的方法 |
CN88105187A Expired CN1007703B (zh) | 1984-12-28 | 1988-12-20 | 用于生产甲烷或含甲烷气体混合物的抗硫催化剂 |
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CN88105187A Expired CN1007703B (zh) | 1984-12-28 | 1988-12-20 | 用于生产甲烷或含甲烷气体混合物的抗硫催化剂 |
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US (2) | US4774261A (zh) |
EP (1) | EP0187600B1 (zh) |
JP (1) | JPH075485B2 (zh) |
CN (2) | CN1006547B (zh) |
AT (1) | ATE34560T1 (zh) |
AU (1) | AU582810B2 (zh) |
CA (1) | CA1260450A (zh) |
DE (2) | DE3562897D1 (zh) |
DK (1) | DK166492C (zh) |
FI (1) | FI855165L (zh) |
FR (1) | FR2575464B1 (zh) |
ZA (1) | ZA859790B (zh) |
Cited By (4)
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CN100409940C (zh) * | 2006-07-17 | 2008-08-13 | 大连理工大学 | 一种同时脱除汽车尾气中氮氧化物和一氧化碳的催化剂 |
CN103191720A (zh) * | 2013-04-26 | 2013-07-10 | 神华集团有限责任公司 | 一种镁铝尖晶石负载的耐硫甲烷化催化剂 |
CN105013472A (zh) * | 2015-06-16 | 2015-11-04 | 中国科学院山西煤炭化学研究所 | 一种适用于高浓度co甲烷化的耐硫催化剂及制法和应用 |
CN110152651A (zh) * | 2019-05-17 | 2019-08-23 | 太原理工大学 | 应用于合成气甲烷化的耐硫催化剂及其制法和应用 |
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FR2575463B1 (fr) * | 1984-12-28 | 1987-03-20 | Gaz De France | Procede de production du methane a l'aide d'un catalyseur thioresistant et catalyseur pour la mise en oeuvre de ce procede |
FR2575453B1 (fr) * | 1984-12-28 | 1990-03-02 | Pro Catalyse | Procede de conversion du monoxyde de carbone par la vapeur d'eau a l'aide d'un catalyseur thioresistant |
FR2600556A1 (fr) * | 1986-06-27 | 1987-12-31 | Rhone Poulenc Chim Base | Nouveau catalyseur a base de nickel et/ou de cobalt, sa preparation et son utilisation a la production de methane |
GB2291819B (en) * | 1991-06-19 | 1996-04-24 | Inst Francais Du Petrole | Process for the synthesis of hydrocarbons from synthesis gases in the presence of a cobalt-based catalyst |
US5639798A (en) * | 1994-12-15 | 1997-06-17 | Wexford P.A. Syncrude Limited Partnership | Process and catalyst for production of hydrocarbons |
KR100758377B1 (ko) * | 2005-11-22 | 2007-09-14 | 주식회사 엘지화학 | 습식 밀링을 이용한 메틸벤젠류 부분산화용 촉매의제조방법 |
CN101199939B (zh) * | 2007-12-21 | 2010-09-29 | 中国科学院山西煤炭化学研究所 | 一种甲烷氧化合成甲醇和甲醛的催化剂及制法和应用 |
CN101618327B (zh) * | 2007-12-21 | 2011-06-08 | 中国科学院山西煤炭化学研究所 | 一种甲烷氧化合成甲醇和甲醛的催化剂及制法和应用 |
US7955588B2 (en) * | 2009-05-26 | 2011-06-07 | Conocophillips Company | Metal sulfide catalysts and methods of making same |
KR101242852B1 (ko) | 2010-09-28 | 2013-03-12 | 주식회사 포스코 | 몰리브데늄 촉매 및 그 제조방법과 상기 촉매를 이용한 메탄 제조방법 |
CN102040441B (zh) * | 2010-10-20 | 2013-04-17 | 北京低碳清洁能源研究所 | 生产富含ch4气体的系统以及用该系统生产富含ch4气体的方法 |
CN103372451B (zh) * | 2012-04-20 | 2015-11-25 | 神华集团有限责任公司 | 一种负载型催化剂的制备方法 |
JP6203375B2 (ja) | 2013-03-28 | 2017-09-27 | エージェンシー フォー サイエンス, テクノロジー アンド リサーチ | メタン化触媒 |
SG2013050877A (en) * | 2013-06-28 | 2015-01-29 | Agency Science Tech & Res | Methanation catalyst |
CN105582969B (zh) * | 2014-10-24 | 2018-08-17 | 中国石油化工股份有限公司 | 耐硫甲烷化催化剂及制备方法 |
CN106423140B (zh) * | 2015-08-10 | 2019-04-09 | 神华集团有限责任公司 | 甲烷化催化剂及其制备方法和应用以及甲烷化方法 |
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US4151191A (en) * | 1977-11-14 | 1979-04-24 | The American Gas Association | Sulfur resistant molybdenum catalysts for methanation |
US4260553A (en) * | 1979-03-05 | 1981-04-07 | Gas Research Institute | Alumina-containing methanation catalysts |
DK144530C (da) * | 1979-12-18 | 1982-09-06 | Topsoee H A S | Fremgangsmaade til fremstilling af en gasblanding med hoejt indhold af metan |
US4491639A (en) * | 1982-09-30 | 1985-01-01 | Gas Research Institute | Methods of making high activity transition metal catalysts |
FR2575453B1 (fr) * | 1984-12-28 | 1990-03-02 | Pro Catalyse | Procede de conversion du monoxyde de carbone par la vapeur d'eau a l'aide d'un catalyseur thioresistant |
-
1984
- 1984-12-28 FR FR8420069A patent/FR2575464B1/fr not_active Expired
-
1985
- 1985-12-23 CA CA000498502A patent/CA1260450A/en not_active Expired
- 1985-12-23 DK DK605085A patent/DK166492C/da not_active IP Right Cessation
- 1985-12-23 ZA ZA859790A patent/ZA859790B/xx unknown
- 1985-12-24 AT AT85402631T patent/ATE34560T1/de not_active IP Right Cessation
- 1985-12-24 DE DE8585402631T patent/DE3562897D1/de not_active Expired
- 1985-12-24 DE DE198585402631T patent/DE187600T1/de active Pending
- 1985-12-24 AU AU51639/85A patent/AU582810B2/en not_active Ceased
- 1985-12-24 EP EP85402631A patent/EP0187600B1/fr not_active Expired
- 1985-12-27 FI FI855165A patent/FI855165L/fi not_active Application Discontinuation
- 1985-12-27 JP JP60299752A patent/JPH075485B2/ja not_active Expired - Lifetime
- 1985-12-28 CN CN85109423A patent/CN1006547B/zh not_active Expired
-
1987
- 1987-07-24 US US07/077,694 patent/US4774261A/en not_active Expired - Fee Related
-
1988
- 1988-06-15 US US07/207,300 patent/US4833112A/en not_active Expired - Fee Related
- 1988-12-20 CN CN88105187A patent/CN1007703B/zh not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100409940C (zh) * | 2006-07-17 | 2008-08-13 | 大连理工大学 | 一种同时脱除汽车尾气中氮氧化物和一氧化碳的催化剂 |
CN103191720A (zh) * | 2013-04-26 | 2013-07-10 | 神华集团有限责任公司 | 一种镁铝尖晶石负载的耐硫甲烷化催化剂 |
CN103191720B (zh) * | 2013-04-26 | 2015-10-21 | 神华集团有限责任公司 | 一种镁铝尖晶石负载的耐硫甲烷化催化剂 |
CN105013472A (zh) * | 2015-06-16 | 2015-11-04 | 中国科学院山西煤炭化学研究所 | 一种适用于高浓度co甲烷化的耐硫催化剂及制法和应用 |
CN110152651A (zh) * | 2019-05-17 | 2019-08-23 | 太原理工大学 | 应用于合成气甲烷化的耐硫催化剂及其制法和应用 |
Also Published As
Publication number | Publication date |
---|---|
EP0187600A1 (fr) | 1986-07-16 |
DK605085A (da) | 1986-06-29 |
JPS61161228A (ja) | 1986-07-21 |
CN1006547B (zh) | 1990-01-24 |
DK166492B (da) | 1993-06-01 |
ATE34560T1 (de) | 1988-06-15 |
EP0187600B1 (fr) | 1988-05-25 |
DE3562897D1 (en) | 1988-06-30 |
CN1033580A (zh) | 1989-07-05 |
FR2575464A1 (fr) | 1986-07-04 |
FI855165A0 (fi) | 1985-12-27 |
US4833112A (en) | 1989-05-23 |
FI855165L (fi) | 1986-06-29 |
ZA859790B (en) | 1986-09-24 |
DK166492C (da) | 1993-10-18 |
DK605085D0 (da) | 1985-12-23 |
AU5163985A (en) | 1986-07-03 |
CN1007703B (zh) | 1990-04-25 |
AU582810B2 (en) | 1989-04-13 |
FR2575464B1 (fr) | 1987-03-20 |
JPH075485B2 (ja) | 1995-01-25 |
DE187600T1 (de) | 1986-11-06 |
CA1260450A (en) | 1989-09-26 |
US4774261A (en) | 1988-09-27 |
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