Union Carbide Corporation

The Lummus Company

Abb Lummus Global Inc.

Louis L Fornoff

Richard Alan Anderson

John J Collins

William G Matthews

Raymond A Reber

Ronald Frank Ambrosini

Krishan Dayal Manchanda

A residue from petroleum refining is thermally cracked to convert the residue to useful cracked products and to generate fuel gas. The residue is cracked by contact with hot synthesis gas produced by the gasification on the tar/pitch residue remaining after the cracking of the residue feed. Waste heat can be recovered from remaining portions of the synthesis gas from the gasifier in the form of steam which can be used in the gasification process and in the cracking process as needed for coke suppression. The combustible synthesis gas and the combustible gasses form the thermal cracking are separated from the cracked product liquid and used for power generation in a combined cycle plant.

Integrated residue thermal cracking and partial oxidation process

Process for dehydrating aqueous ethanol, utilizing a high-pressure distillation (with a single distillation column) of an aqueous ethanol admixture (preferably one derived from a conventional ethanol fermentation process), to achieve a vapor phase ethanol-water admixture containing about 90 percent, by weight, of ethanol, and then drying the vaporous admixture, in the presence of CO.sub.2, with a crystalline zeolite type 3A, utilizing the 'pressure energy' derived from the distillation to allow the product ethanol to condense at ambient temperatures, and then, if desired, employing the resultant dried ethanol product in the production of gasohol.

Process for dehydrating ethanol and for the production of gasohol

Mercury vapor is selectively chemisorbed from gas streams by contact with zeolitic molecular sieves containing elemental sulfur. The selectivity and capacity of the zeolite adsorbent in the process is not affected adversely by the presence of adsorbed water vapor or water vapor in the gas stream being treated.

Selective adsorption of mercury from gas streams

In the prevention of atmospheric pollution by sulfur dioxide emissions from acid absorbers in contact process sulfuric acid plants in which the unconverted SO.sub.2 is accumulated by adsorption in a zeolite adsorbent bed and desorbed back into the acid production system, it is found that ambient moist air, after partial dehydration in an acid scrubber is suitably used both to cool down and hot purge desorb the zeolite beds. In addition the pure water derived from the ambient air is advantageously used in the acid-making system.

Process for removing sulfur dioxide from gas streams

The sulfur trioxide, sulfuric acid vapor and sulfuric acid mist content of the effluent gas stream from a contact process sulfuric acid absorber are substantially decreased by pre-treating the gas stream prior to its passage through a conventional mist eliminator. The treatment steps include cooling the absorber effluent to below 100.degree.F and contacting same with aqueous sulfuric acid in a particular concentration range and thereafter maintaining the gas phase in the mist eliminator saturated with respect to H.sub.2 SO.sub.4 vapor.

Growing community of inventors

Cedar Grove, NJ, United States of America

Louis L Fornoff