Abstract:
An ash fusion temperature reducing agent comprising a comminuted ore mixture of the silicates of iron, calcium, magnesium and aluminum is mixed with an ash containing pumpable liquid hydrocarbonaceous material to produce Mixture A. Mixture A is reacted with a free-oxygen containing gas in a partial oxidation gas generator. A hot raw effluent gas stream comprising H.sub.2 +CO along with molten ash having a reduced ash fusion temperature are produced at a lower temperature. Alternatively, Mixture A may be first introduced into a coking zone and converted into petroleum coke in which the ash fusion temperature reducing agent is dispersed throughout. The petroleum coke is then introduced into the partial oxidation gas generator where the hot raw effluent gas stream comprising H.sub.2 +CO is produced along with molten petroleum coke ash having a reduced ash fusion temperature. The molten ash is readily separated from the effluent gas stream and the gas generator may be operated at a lower temperature thereby extending the life of the refractory lined reaction zone.
Abstract:
An ash fusion temperature increasing agent principally comprising a silicon and/or titanium compound, such as SiO.sub.2 and/or TiO.sub.2 is mixed with an ash-containing fuel comprising a pumpable liquid hydrocarbonaceous material and/or petroleum coke to produce Mixture A. In one embodiment, the ash fusion temperature increasing agent comprises about 55-100 wt. % of silicon compound selected from the group consisting of fine silica or quartz, volcanic ash, and mixtures thereof; and the remainder, if any, of said ash fusion temperature increasing agent comprises a member of the group consisting of aluminum compound such as Al.sub.2 O.sub.3, magnesium compound such as MgO, and mixtures thereof. Mixture A is reacted with a free-oxygen containing gas in a free-flow refractory lined reaction zone of a partial oxidation gas generator. A hot raw effluent gas stream comprising H.sub.2 +CO along with fly-ash having an increased initial deformation temperature are produced at a higher temperature. Alternatively, Mixture A may be first introduced into a coking zone and converted into petroleum coke in which the ash fusion temperature increasing agent is dispersed throughout. The petroleum coke entrained in a liquid or gaseous carrier is then introduced into the partial oxidation gas generator where a hot raw effluent gas stream comprising H.sub.2 +CO is produced along with fly-ash having an increased ash fusion temperature. The fly-ash is readily separated from the effluent gas stream; and, the gas generator may be operated in the fly-ash mode at a higher temperature, thereby yielding higher carbon conversions while extending the life of the refractory lined reaction zone.
Abstract:
A partial oxidation process and a novel burner are provided for simultaneously introducing two or three separate feedstreams into a free-flow partial oxidation gas generator for the production of synthesis gas and fuel gas, or reducing gas. The reactant feedstreams include a liquid hydrocarbonaceous fuel or a pumpable slurry of solid carbonaceous fuel, and a free-oxygen containing gas e.g. air or oxygen. The burner comprises a central conduit and a plurality of spaced concentric coaxial conduits with down-flowing annular passages. A flat annular-shaped disc or cup-shaped porous ceramic or porous metal cooling means of uniform composition, wall thickness and porosity with the various pores interconnecting is attached to the downstream tip of the burner. A controlled amount of liquid coolant under pressure is passed successively through the porous inside surface, porous core and porous outside surface of the cooling means is vaporized. The tip of the burner is thereby cooled. Stress cracking of the burner tip is prevented; and the life of the burner is extended. Further, deposition of ash on the face of the burner is prevented.
Abstract:
A process for the partial oxidation of a sulfur- and silicate-containing carbonaceous fuel to produce a synthesis gas with reduced sulfur content which comprises partially oxidizing said fuel at a temperature in the range of 1900.degree.-2600.degree. F. in the presence of a temperature moderator, an oxygen-containing gas and a sulfur capture additive which comprises a calcium-containing compound portion, a sodium-containing compound portion, and a fluoride-containing compound portion to produce a synthesis gas comprising H.sub.2 and CO with a reduced sulfur content and a molten slag which comprises (1) a sulfur-containing sodium-calcium-fluoride silicate phase; and (2) a sodium-calcium sulfide phase.
Abstract:
Charge compositions containing aqueous mixtures of organic oxygenates may be separated by pervaporation through a membrane assembly containing a porous ceramic support bearing as separating layer, a membrane of cured polyvinyl alcohol which has been cross-linked as with glutaraldehyde.
Abstract:
The present invention pertains to novel phases involving FeO, V.sub.2 O.sub.3 and CaO and the method for their preparation. The solid compositions involving FeO--V.sub.2 O.sub.3 --CaO fall within the shaded area of a polygon in a ternary composition diagram of FeO, V.sub.2 O.sub.3 and CaO as shown in the drawing herein e.g., FIG. 1. The compositions may be used as a catalyst for oxidation or reduction reactions.
Abstract translation:本发明涉及FeO,V2O3和CaO的新型相及其制备方法。 涉及FeO-V2O3-CaO的固体组合物在FeO,V 2 O 3和CaO的三元组成图中落在多边形的阴影区域内,如图所示,如图1所示。 该组合物可用作氧化还原反应的催化剂。
Abstract:
Vanadium garnet materials and a method for their preparation. The vanadium garnet material has a trivalent vanadium cation and a composition that falls within a specific prismatic-shaped volume in a quaternary composition diagram of MnO, CaO, V.sub.2 O.sub.3, and SiO.sub.2. The prismatic-shaped volume represents compositions of liquids with which said vanadium garnet is in equilibrium on the liquidus surface and from which the vanadium garnet phase is crystallized. A typical vanadium garnet material has the formula Mn.sub.1.3 Ca.sub.1.7 V.sub.2 Si.sub.3 O.sub.12, as provided in the drawing by point F. The vanadium garnet materials may be used in laser applications.
Abstract:
The present invention pertains to novel vanadium spinel materials and a method for their preparation. Each vanadium spinel material has a trivalent vanadium cation and is crystallized from a liquid having a composition that falls within a specific polygon shaped area in a ternary composition diagram of V.sub.2 O.sub.3 --MnO--SiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The compositions may be used as a catalyst for oxidation reactions.
Abstract:
Synthesis gas, reducing gas, or fuel gas is produced by the partial oxidation of ash-containing solid carbonaceous and/or liquid hydrocarbonaceous fuel at an autogenous temperature in the range of about 20.degree. F. to 200.degree. F. below the softening temperature of the ash in said fuel, and at a pressure in the range of about 17 to 100 atmospheres to produce a raw effluent gas stream containing entrained carbon-rich fly-ash which is separated from the effuent gas stream. A fuel mixture comprising about 20 to 100 wt. % of said carbon-rich fly-ash and about 0 to 80 wt. % of a supplemental fuel is reacted by partial oxidation at an autogenous temperature of about 100.degree. F. above the ash-fusion temperature, and at a reduced pressure e.g. in the range of about 1 to 16 atmospheres and at least 16 atmospheres below the pressure in the partial oxidation reaction used to produce said carbon-rich fly-ash. By reducing the pressure less carbon-rich particulate material is produced in the second partial oxidation reaction at a significant cost savings and improved process efficiency.