摘要:
Disclosed herein are processes for producing neopentane. The processes generally relate to demethylating isooctane to produce neopentane. The isooctane may be provided by the alkylation of isobutane with butylenes.
摘要:
A process of tuning a hydrocarbon product composition is described. The process involves selecting paraffins for reaction. The equilibrium constants for reactions of the selected paraffins can be used to select appropriate feed ratios, or an equilibrium composition as function of C/H molar ratio. A selected feed is reacted to obtain the product. Equilibrium product compositions and non-equilibrium product compositions can be obtained using the process.
摘要:
The present invention relates to the production of butenes and derivatives thereof from aqueous ethanol, optionally obtained from a fermentation broth. The butenes thus produced find use as intermediates for the production of polyethylenes and for the production of other known, useful materials.
摘要:
The present invention relates to a process for making isooctenes using dry isobutanol derived from fermentation broth. The isooctenes so produced are useful for the production of fuel additives.
摘要:
A process for decomposing a cumene oxidation product mixture containing cumene hydroperoxide (CHP) and dimethylphenolcarbinol (DMPC) (1) to produce phenol and acetone (26).
摘要:
Disclosed is a process of the alkylation of an olefin with an isoparaffin using sulphuric acid as a catalyst. In this process, a finely-dispersed emulsion of isoparaffin and sulphuric acid is prepared first, in a separate emulsion preparation zone. This preparation is carried out by injecting the isoparaffin into the acid through a set of nozzles, thereby allowing the isoparaffin to "scavenge" at high speed through the acid and thus to form an extremely homogeneous emulsion. This makes it possible to achieve proper mixing without need of impellers or other similar mixing devices that usually call for substantially maintenance and operating costs. Then, the emulsion that was so prepared and which forms an already "finished" phase per se, is fed into a reaction zone which is separated from the emulsion preparation zone and in which the olefin is injected preferably at a plurality of points and in directions perpendicular to the emulsion flow. Advantageously, such as injection can be controlled so that the volume ratio of sulphuric acid to hydrocarbons present within the reaction zone is as low as from 0.3 to 0.5:1. This process allows reduction in the rate of expenditure of the raw materials, especially sulphuric acid, through the way and ratios at which the materials are mixed, and through the use of a proximate analysis of the alkylation reaction process; it also improves the target product quality. An optimized, small-size, high-capacity and ecologically-clean apparatus for carrying out this process is also disclosed.
摘要:
A process for converting oxygenates into alkylate comprising: a) feeding an oxygenate containing feed to an oxygenate to olefins conversion reactor; b) contacting the oxygenate containing feed with a molecular sieve catalyst under oxygenate to olefins conversion conditions in the reactor to form a product stream comprising propylene, ethylene and mixed C4s; c) separating the mixed C4s from the product stream to form a mixed C4 stream; d) passing at least a fraction of the mixed C4 stream to an alkylation process to produce alkylate.
摘要:
The present invention relates to a new process for the synthesis of 2,3,4,5,6,7-substiuted indenes, which are useful precursors for the formation of certain ansa-metailocene catalysts.
摘要:
An improved method for the production of phenol, acetone and alpha-methyl styrene (AMS) from a cumene hydroperoxide and dimethylbenzyl alcohol (DMBA) mixture is described, wherein 0.5 - 5% additional water by weight is added prior to the final DMBA dehydration step, carried out in the presence of about 20 - 400 ppm mineral acid catalyst at 110 - 150 C for 0.5 to 40 minutes residence time. The use of additional water allows greater flexibility in maintaining optimum temperature in the second stage over a much broader turndown range with fixed equipment, decreases the residual dicumyl peroxide (DCP) at the yield optimum for a given temperature, and increases the overall yield of AMS at optimum conditions at a given temperature.