In this invention, a portion of the products from a pyrolysis reactor are reacted in a process to form one or more chemical intermediates.

The present invention provides a delayed coking process comprising a step of subjecting a mixed feed comprises residual heavy hydrocarbon feedstock and bio oil obtained from fast pyrolysis of lignocellulosic biomass of one or more of Jatropha, Cashew nut, Karanjia and Neem to a delayed coking process and a system for the delayed coking process.

The invention provides a process for the preparation of an olefinic product, the comprising: (a) reacting an oxygenate to produce an effluent stream, comprising at least oxygenate, olefin, water and acidic by-products; (b) cooling the effluent stream by means of an indirect heat exchange to a temperature greater than the dew point temperature of effluent stream; (c) further rapidly cooling the effluent stream to a temperature at or lower than the dew point temperature of the reaction effluent stream by direct injection of a first aqueous liquid into the effluent stream, to form a quench effluent stream; (d) separating the first quench effluent stream into a liquid quench stream and a gaseous quench stream; and passing the gaseous quench stream into a quench tower and contacting the gaseous quench stream with a second aqueous liquid, to produce a quench tower gaseous stream comprising the olefinic product.

The invention provides a process for the preparation of an olefinic product, the comprising: (a) reacting an oxygenate to produce an effluent stream, comprising at least oxygenate, olefin, water and acidic by-products; (b) cooling the effluent stream by means of an indirect heat exchange to a temperature greater than the dew point temperature of effluent stream; (c) further rapidly cooling the effluent stream to a temperature at or lower than the dew point temperature of the reaction effluent stream by direct injection of a first aqueous liquid into the effluent stream, to form a quench effluent stream; (d) separating the first quench effluent stream into a liquid quench stream and a gaseous quench stream; and passing the gaseous quench stream into a quench tower and contacting the gaseous quench stream with a second aqueous liquid, to produce a quench tower gaseous stream comprising the olefinic product.

A process is presented for the recovery of solvent used in an alkylation process. The solvent removes heavy hydrocarbons from a C4 stream. The C4 stream is passed to an alkylation unit to generate an alkylate product. A portion of the solvent is carried over with the C4 stream and needs to be recovered to reduce the aromatics content in the C4 stream, to reduce any deleterious effects of the aromatics in downstream processing.

The invention provides a process for preparing an olefin, comprising: (a) reacting an oxygenate, in a reaction zone in the presence of a molecular sieve catalyst, at a temperature from 350 to 1000° C., to produce a effluent stream, comprising at least oxygenate, olefin, water and acidic by-products; (b) cooling the reaction effluent stream by an indirect heat exchange to a temperature greater than the dew point temperature of effluent stream; (c) further rapidly cooling the effluent stream to a temperature lower than the dew point temperature of the effluent stream by direct injection of an aqueous liquid into the effluent stream, to form a quench effluent stream; and (d) passing the quench effluent stream into a quench tower and contacting the quench effluent stream with a second aqueous liquid in the presence of at least one set of internals, to produce a quench tower gaseous stream comprising the olefin.

The invention provides a process for preparing an olefin, comprising: (a) reacting an oxygenate, in a reaction zone in the presence of a molecular sieve catalyst, at a temperature from 350 to 1000° C., to produce a effluent stream, comprising at least oxygenate, olefin, water and acidic by-products; (b) cooling the reaction effluent stream by an indirect heat exchange to a temperature greater than the dew point temperature of effluent stream; (c) further rapidly cooling the effluent stream to a temperature lower than the dew point temperature of the effluent stream by direct injection of an aqueous liquid into the effluent stream, to form a quench effluent stream; and (d) passing the quench effluent stream into a quench tower and contacting the quench effluent stream with a second aqueous liquid in the presence of at least one set of internals, to produce a quench tower gaseous stream comprising the olefin.

The process is for thermally treating a feed material. The process comprises at least one step performed in a rotating kiln operating under positive pressure with a pressure control system and wherein in the process a sweep gas, that is an inert gas or a substantially non-reactive gas, is injected into the rotating kiln or in the feed stream entering the rotating operating kiln; or at least one step performed in a rotating kiln operating under positive pressure managing system; or at least one step performed in a rotating kiln wherein a sweep gas is injected in the rotating kiln or in the feed stream entering the rotating operating kiln. In step a), or in b) or in step c), the conditions of the thermal treatment are managed in order that the exit stream, after cooling, result in at least one liquid phase that is preferably essentially an oily liquid phase.

The process is for thermally treating a feed material. The process comprises at least one step performed in a rotating kiln operating under positive pressure with a pressure control system and wherein in the process a sweep gas, that is an inert gas or a substantially non-reactive gas, is injected into the rotating kiln or in the feed stream entering the rotating operating kiln; or at least one step performed in a rotating kiln operating under positive pressure managing system; or at least one step performed in a rotating kiln wherein a sweep gas is injected in the rotating kiln or in the feed stream entering the rotating operating kiln. In step a), or in b) or in step c), the conditions of the thermal treatment are managed in order that the exit stream, after cooling, result in at least one liquid phase that is preferably essentially an oily liquid phase.

A process to convert paraffinic feedstocks into renewable poly-alpha-olefins (PAO) basestocks. In a preferred embodiment of the invention, renewable feed comprising triglycerides and/or free fatty acids are hydrotreated producing an intermediate paraffin feedstock. This paraffin feedstock is thermally cracked into a mixture of olefins and paraffins comprising linear alpha olefins. The olefins are separated and the un-reacted paraffins are recycled to the thermal cracker. Light olefins preferably (C2-C6) are oligomerized with a surface deactivated zeolite producing a mixture of slightly branched oligomers comprising internal olefins. The heavier olefins (C6-C16) are oligomerized, preferably with a BF3 catalyst and co-catalyst to produce PAO products. The oligomerized products can be hydrotreated and distilled together or separate to produce finished products that include naphtha, distillate, solvents, and PAO lube basestocks.