Methods and systems for improving energy conversion from the heat available in a hydrocarbon feedstream during the production of olefins. In a particular non-limiting embodiment, the method can include increasing the temperature of a hydrocarbon feedstream and a hydrogen gas feedstream via a first heat exchanger; combining the feedstreams and expanding the combined feedstream in an expander to decrease the pressure and/or temperature of the combined feedstream; increasing the temperature of the combined feedstream via a second heat exchanger; feeding the combined feedstream into a reactor to produce a reactor effluent; decreasing the temperature of the reactor effluent; and compressing the reactor effluent in a compressor, where the expansion of the combined feedstream drives the compressor.

A method for processing an oligomerization product stream includes discharging the oligomerization product stream from an oligomerization reactor through a product outlet line, and heating the oligomerization product stream, heating a wall of the product outlet line, or both. The oligomerization product stream includes solvent, linear alpha olefins, a polymer byproduct, or a combination of at least one of the foregoing. The heating is to a temperature that is greater than the melting temperature of the polymer byproduct present in the oligomerization product stream.

A system and method for a first reactor to produce a transfer slurry having a first polyolefin polymerized in the first reactor, a heat-removal zone to remove heat from the transfer slurry, and a second reactor to receive the transfer slurry cooled by the heat-removal zone, the second reactor to produce a product slurry having a product polyolefin which includes the first polyolefin and a second polyolefin polymerized in the second reactor.

Operation of a thermochemical regenerator to generate soot or to increase the amount of soot generated improves the performance of a furnace with which the thermochemical regenerator is operated.

Operation of a thermochemical regenerator to generate soot or to increase the amount of soot generated improves the performance of a furnace with which the thermochemical regenerator is operated.

A flow reactor or flow reactor component includes a base plate, a first fluid module having first and second major surfaces, an internal process fluid passage, and a heat exchange channel in the first major surface, the first major surface stacked on the base plate; a second fluid module having first and second major surfaces, an internal process fluid passage and a heat exchange channel in the first major surface, the first major surface stacked on the second major surface of the first fluid module, optional additional fluid modules of the same configuration as the first and second fluid modules stacked successively on the second fluid module, and a top plate having a heat exchange channel in a bottom major surface thereof with the bottom major surface stacked on an uppermost fluid module of (1) the second fluid module and (2) the optional additional fluid modules.

A calcining kettle includes an outer kettle shell, an inner kettle shell, an interior heat exchanger assembly defining at least one tortuous path inside a volume defined by the inner kettle shell, and an agitator within the inner kettle shell. The inner kettle shell is disposed within the outer kettle shell such that the inner kettle shell and the outer kettle shell together at least partially define a jacket adjacent the inner kettle shell. The inner kettle shell and the interior heat exchanger assembly at least partially define a processing volume. The agitator is configured to rotate at least one paddle to cause movement of a feedstock material within the processing volume. A heating device may be structured and adapted to circulate a heat transfer fluid in the at least one tortuous path and the jacket. Calcining methods are also disclosed.

With this analysis device, air that has been heated by a heater is blown by a fan in the direction of an analysis receptacle rotary driver and an analysis receptacle that is rotationally driven by the analysis receptacle rotary driver. The analysis receptacle rotary driver rotates the analysis receptacle within the analysis chamber in the same direction as the direction of air flow produced by the fan.

The present disclosure discusses a device and method for improving the reaction rate of enzymatic modification of biopolymers. A thermophoretic device is used to increase the rate of enzymatic reactions with biopolymers by creating a temperature gradient using a heating element and a cooling element. The use of a temperature gradient within a cavity in the thermophoretic device concentrates the reacts along an interior surface of the device, increasing the reaction rate.

The present invention relates to a device and a process for hydroconversion or hydrotreatment of a hydrocarbon feedstock, comprising in particular at least one coil-wound heat exchanger (S-1), said coil-wound exchanger being a single-pass heat exchanger formed by a vertical chamber in which one or more bundles of tubes are helically wound around a central core, as numerous superposed layers, for: heating and directly distributing a hydrocarbon feedstock/hydrogen stream mixture to a hydrotreatment or hydroconversion reaction section (R-1), and cooling the reaction effluent from the hydrotreatment or hydroconversion reaction section (R-1). The present invention also relates to a use of a coil-wound heat exchanger (S-1) in a process for hydroconversion or hydrotreatment of a hydrocarbon feedstock.