Abstract: A method is provided for high temperature conversion of mercutry-containing hydrocarbon feedstocks to produce a product stream with a negligible mercury level and to protect cryogenic heat exchangers from mercury damage. The feed is treated with adsorbent at high temperatures to remove up to 99% of the mercury. After high temperature conversion, the product stream is treated over a second adsorbent composition to remove any residual mercury and water before the product is cooled and collected.

Abstract: A process and apparatus for fluidized bed combustion using a dense phase combustion zone over a dilute phase combustion zone. When used to regenerate FCC catalyst containing coke with relatively large amounts of NO.sub.x precursors, the catalyst is added to and partially regenerated in the dense phase zone and then falls down into the dilute phase zone. Most of the combustion air is added to the dilute phase and rises into and fluidizes the dense phase zone. NO.sub.x formed in the dilute phase is reduced to N.sub.2 in the dense phase.

Abstract: A system for mechanically removing mercury from natural gas is provided. A mercury trap is positioned at substantially the coldest point in the system before a main heat exchanger. The trap includes a bend in the natural gas flow path, baffles, a demister and/or a perforated cylinder for changing the direction of the flow path and causing mercury to be deposited therein.

Abstract: In a method for removing mercury from a wastestream to produce an environmentally acceptable discharge, the wastestream is contacted with an effective amount of an adsorbent composition which includes a metal compound capable of forming an amalgam and/or a sulfide with mercury and a support. After contact, the treated wastewater is discharged amd the adsorbent composition is regenerated. A method for making the adsorbents is also provided.

Abstract: Wells producing oil and gas are treated with formation waters containing selected time-release scale inhibitors to reduce the deposit of scale in the wellbore and within the formation. The inhibitors are formed by cross-linking a polyacrylic acid compound of controlled molecular wright from about 1,000 to 10,000 with trivalent chromium cations to produce a water-soluble complex which progressively releases the inhibitor from the formation over an extended period of time.

Abstract: The severity of visbreaking of an oil is increased without increasing the instability of the product by incorporating into the feedstock a catalyst preferably supported on a porous substrate. The catalyst is the elemental form or compound of an element selected from the group consisting of selenium, tellurium and sulfur.

Abstract: Hydrocarbon liquids and gas, particularly gas to be processed in LNG plants, is treated to remove mercury by contacting it with free silver preferably on an activated carbon or gamma alumina support. The mercury amalgamates onto the metal. The gas can previously have been treated by contact with free sulfur to remove mercury.

Abstract: A zeolite catalyst composition having increased resistance to agglomeration and/or migration of its noble metal component at high temperatures and a method for preparing the catalyst composition are disclosed. The zeolite catalyst composition contains a non-framework multivalent metal oxide to stabilize the noble metal. The multivalent metal oxide, such as alumina, can be introduced into the zeolite component by diffusion, impregnation, ion-exchange, and/or calcination.

Abstract: Heavy resid oils are upgraded by a thermal treatment under liquid coking conditions to evolve two at least partially immiscible liquid phases. The lighter gas oil phase is then separated from the heavier liquid coke phase by decantation.

Abstract: A process for the production of pseudocumene, mesitylene, xylenes and benzene by upgrading C.sub.9 aromatics or mixtures of C.sub.7 -C.sub.9 aromatics is disclosed. The process is carried out under catalytic upgrading conditions using a catalyst which comprises a crystalline zeolite having a silica-to-alumina ratio of at least about 12 and a constraint index from about 1 to about 12, the zeolite preferably being ZSM-5.

Abstract: A process and apparatus for fluidized bed combustion using a dense phase combustion zone over a dilute phase combustion zone. When used to regenerate FCC catalyst containing coke with relatively large amounts of NO.sub.x precursors, the catalyst is added to and partially regenerated in the dense phase zone and then falls down into the dilute phase zone. Most of the combustion air is added to the dilute phase and rises into and fluidizes the dense phase zone. NO.sub.x formed in the dilute phase is reduced to N.sub.2 in the dense phase.

Abstract: A method and system for mechanically removing mercury from natural gas are provided. A mercury trap is positioned at substantially the coldest point in the system before a main heat exhanger. The trap includes a bend in the natural gas flow path, baffles, a demister and/or a perforated cylinder for changing the direction of the flow path and causing mercury to be deposited therein.

Abstract: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite. A particularly effective additive is provided by ion-exchanging ZSM-5 zeolite with cupric ion. With such preferred additive, CO emissions also are reduced, and the recovered gasoline has enhanced octane number.

Abstract: A catalytic cracking process for converting heavy, metals laden feed to lighter products is disclosed. The catalyst regenerator is operated under relatively reducing conditions, to produce a flue gas containing at least 1 mole % carbon monoxide. An additive, preferably alumina, is added to the circulating catalyst inventory to selectively sorb metal contaminants in the feed. The reducing conditions in the catalyst regenerator minimize formation of highly oxidized forms of vanadium, permitting higher vanadium levels to be tolerated on the cracking catalyst. The additive material has a greater affinity for vanadium than the cracking catalyst, and absorbs a disproportionate amount of metals in the feed. Preferably a soft, friable, alumina additive is used which results in the production of alumina fines rich in vanadium, which are discharged from the unit with catalyst fines.

Abstract: A catalytic cracking process operates with a getter additive present where hot catalyst meets heavy metals laden crude. The getter additive is a material which is selective for metals, and has a particle size/density such that the getter additive remains in the FCC unit for no more than 24 hours, and preferably is removed within one hour or less. Addition of 1-5 weight percent alumina having an average particle size of 10-40 microns will remove much of the metal content from the feed, and the metals laden additive will itself be rapidly removed from the FCC unit preventing migration of metal or degradation of the cracking operation due to the presence of metal. Preferably the additive is fine particles which are mixed with the hydrocarbon feed to the unit.

Abstract: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite. A particularly effective additive is provided, for example, by treating a ZSM-5 zeolite in a matrix consisting predominantly of titania, zirconia or a mixture thereof with a solution containing both copper and rare earth cations to incorporate both of these elements with the zeolitic composition.

Abstract: It has been discovered that low viscosity lubricant can be prepared in high yield by catalytically cracking higher molecular weight oligomers of C.sub.6 -C.sub.20 alpha-olefins prepared by oligomerization in contact with reduced chromium oxide catalyst on solid support. Further, it has been discovered that the reduced viscosity oligomers produced by cracking of high vicosity lubricant retains the superior characteristics of higher viscosity index and low pour point of the liquid lubricant starting material. The lubricants are cracked in contact with hydrogen and hydrocracking catalyst such as platinum or palladium on mildly acidic support. The support can be Al.sub.2 O.sub.3, acidified Al.sub.2 O.sub.3, SiO.sub.2, SiO.sub.2 /Al.sub.2 O.sub.3, zeolites comprising high silica ZSM-5, Beta, HY, USY, and clay. The reduced viscosity material is hydrotreated during cracking.

Abstract: A method for removing mercury from water or hydrocarbon condensate is provided. The mercury-containing liquid is sprayed into a stripper having a packing therein to facilitate its contact with a stripping gas such as air or natrual gas. The stripped product is drawn from the bottom of the stripper. The stripping gas which carries the mercury from the stripper is passed over an active adsorbent to remove the mercury. The cleaned gas may be used or recycled.

Abstract: A method of containing and neutralizing a hydrofluoric acid spill which comprises the steps of detecting a hydrofluoric acid spill, and then drenching the hydrofluoric acid spill area with a drench composition comprising water, and an alkali agent, or water an alkali agent and a surfactant, or water an alkali agent, a surfactant and a foaming agent. The alkali agents are present in an amount of 0.1 to 10 parts per 100 parts of water.

Abstract: A process for removing catalyst fines from slurry oil is disclosed. A settling reagent, such as coal, alumina, or coke, is added to a fines containing heavy oil bottoms product from a fractionator downstream of a catalytic cracking unit. The settling reagent promotes rapid settling and removal of fines from heavy oil product. Settling may be performed in a slurry settler, or a centrifuge. A catalytic cracking process for heavy, metals laden oil is also disclosed using a settling reagent to clarify slurry oil, then recycling settled settling reagent to contact the heavy oil in the catalytic cracking process.