摘要:
Biomass material is pyrolyzed in the absence of air, O2, H2, and solvent (e.g., H2O) at 500° C. or above in a reactor containing (i) a catalyst which as charged is a rehydrated calcined calcium-containing layered dihydroxide comprised of particles having an average particle size in the range of about 40 to about 400 microns (preferably in the range of about 50 to about 150 microns), which optionally is in a pre-agglomerized form, and (ii) a particulate fluidizable heat transfer medium, preferably sand; and condensing and isolating pyrolysis oil produced and collecting and isolating non-condensable gases separately from the condensed isolated liquid pyrolysis oil product. Pyrolysis oil obtained directly from the pyrolysis has a total acid number less than 70 mg/KOH/g; and a weight percentage of O2 removal of 72 wt % or more as determined by a described test procedure and as calculated using an expression given in the text.
摘要:
Biomass material is pyrolyzed in the absence of air, O2, H2, and solvent (e.g., H2O) at 500° C. or above in a reactor containing (i) a catalyst which as charged is a rehydrated calcined calcium-containing layered dihydroxide comprised of particles having an average particle size in the range of about 40 to about 400 microns (preferably in the range of about 50 to about 150 microns), which optionally is in a pre-agglomerized form, and (ii) a particulate fluidizable heat transfer medium, preferably sand; and condensing and isolating pyrolysis oil produced and collecting and isolating non-condensable gases separately from the condensed isolated liquid pyrolysis oil product. Pyrolysis oil obtained directly from the pyrolysis has a total acid number less than 70 mg/KOH/g; and a weight percentage of O2 removal of 72 wt % or more as determined by a described test procedure and as calculated using an expression given in the text.
摘要:
This invention provides a process for forming a solution composition, which process comprises forming a primary solution by bringing together, in an aqueous medium, i) at least one phosphorus compound, ii) at least one Group VI metal compound, iii) at least one Group VIII metal compound, and iv) an additive which is a) tetraethylene glycol, b) polyethylene glycol having an average molecular weight in the range of about 200 to about 400, c) a mixture of tetraethylene glycol and polyethylene glycol having an average molecular weight in the range of about 200 to about 400, or d) a mixture of (1) tetraethylene glycol and/or polyethylene glycol having an average molecular weight in the range of about 200 to about 400 and (2) one or more of monoethylene glycol, diethylene glycol, and triethylene glycol. The molar ratio of additive to the total moles of Group VI metal and Group VIII metal is above 0.30:1, and the atomic ratio of phosphorus to Group VI metal is at least about 0.33: 1. Optionally, the primary solution is heated at a temperature above about 40°C to form a heated solution. The heated solution is optionally cooled to form a cooled solution. Also provided are compositions formed by such processes, processes for forming catalyst compositions from these compositions, and catalyst compositions formed by these processes.
摘要:
A catalyst having at least one Group VIB metal component, at least one Group VIII metal component, a phosphorus component, and a boron-containing carrier component. The amount of the phosphorus component is at least 1 wt%, expressed as an oxide (P 2 O 5 ) and based on the total weight of the catalyst, and the amount of boron content is in the range of about 1 to about 13 wt%, expressed as an oxide (B 2 O 3 ) and based on the total weight of the catalyst. In one embodiment of the invention, the boron-containing carrier component is a product of a co-extrusion of at least a carrier and a boron source. A method for producing the catalyst and its use for hydrotreating a hydrocarbon feed are also described.
摘要:
The present invention relates to processes for the production of at least partially pepetizable and at least partially peptized boehmite particles, the at least partially pepetizable and at least partially peptized boehmite particles, and the use of the at least partially peptized boehmite particles to flame retard synthetic resins.
摘要:
This invention provides processes for forming solution compositions, which processes comprises bringing together, in an aqueous medium, i) at least one phosphorus compound; ii) at least one Group VI metal compound; and iii) at least one Group VIII metal compound, such that a solution having a Group VI metal concentration of more than about 5.6 mol/L is formed. Also provided are compositions formed by such processes, processes for forming catalyst compositions from these compositions, and catalyst compositions formed by these processes.
摘要:
Provided is a method for the formation of particulate compounds of selectable size characteristics, which method includes supporting a slurried particulate precursor on a porous support; heating the support such that aggregates of the particulate compound are formed, and desagglomerating the aggregates into their component particulate. In a preferred embodiment, an aqueous slurry of alumina particulate which has not undergone the alpha transition is contacted with a porous support having defined pore and cavity sizes, such that the slurry occupies at least some of the interstices of the porous support. The slurry and support are heated such that the alumina precursor slurry undergoes the alpha transition. The alpha alumina product is then particulated. The support is of such a material that it is either lost through combustion during heating or otherwise removable after heating, such as during or after particulation, without destroying the particle characteristics imparted by the porous support. Additionally, in a further embodiment, co- components are added to the slurry in order to impart desired properties to the particulated product.