Abstract: A promoted calcium-alumina supported reforming catalyst that is particularly useful for reforming reactions where low H2/CO ratio synthesis gas, such as less than 2.3 is generated directly is disclosed. The catalyst comprises from about 25 wt % to about 98 wt % alumina, from about 0.5 wt % to about 35 wt % calcium oxide, from about 0.01 wt % to about 35 wt % of a promoter, and from about 0.05 wt % to about 30 wt % of an active metal. The promoter is selected from the group consisting of titanium, zirconium, yttrium, niobium, elements of the lanthanum-series, such as, without limitation, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, ytterbium, and combinations thereof. The active metal is selected from the group consisting of nickel, cobalt, rhodium, ruthenium, palladium, platinum, iridium and combinations thereof as active metal, wherein the calcium oxide is combined with the alumina to form aluminum-rich calcium aluminates.
Type:
Grant
Filed:
October 13, 2004
Date of Patent:
May 27, 2008
Assignee:
Süd-Chemie Inc
Inventors:
Yeping Cai, William M. Faris, Jeffery E. Riley, Robert E. Riley, David P. Tolle, Jon P. Wagner, Shizhong Zhao
Abstract: A calcium-promoted alumina supported nickel reforming catalyst stabilized with titanium is disclosed. The catalyst is particularly useful for reforming reaction in feed streams containing significant quantities of CO and CO2, low quantities of steam (the feed stream having a H2O/CH4 of less than 0.8 and a CO2/CH4 of greater than 0.5) and relatively high quantities of sulfur compounds (up to about 20 ppm). The catalyst comprises from about 25 wt % to about 98 wt % alumina as a support, from about 2 wt % to about 40 wt % nickel oxide, which is promoted with from about 0.5 wt % to about 35 wt % calcium oxide, and which is stabilized with from about 0.01 wt % to about 20 wt % titanium, wherein the calcium oxide is combined with the alumina to form calcium aluminate. The catalyst can be used in reforming reactions to produce syngas and has advantages in producing low hydrogen to carbon monoxide ratio syngas for applications such as iron ore reduction.
Abstract: A post driving device is disclosed. The post driving device slides to a desired position and is essentially locked in place through frictional force. As the post is driven into the ground, the device can be adjusted to a new position along the length of the post.
Abstract: A spill-resistant beverage cup lid which includes a well for adding liquid or powder condiments to a hot beverage and which also serves as a drinking portal is described. The well includes a plurality of apertures in a side wall of the well allowing the condiments to mix with the beverage. In an alternative embodiment, the well further includes a removable flap.
Abstract: A pressure relief pad for use by persons suffering from or subject to the formation of decubitus ulcers or bedsores is described. The pressure relief pad is made from viscoelastic foam layers which provide for the redistribution of pressure around an affected or wounded area allowing the wound to heal faster. The contoured viscoelastic foam pad can be positioned over a separately applied dressing or an exudate absorbing material can be included in the pad. The contouring for the pad may be achieved by molding the foam as desired or by using a multiplicity of foam layers joined by adhesive to form the pad.