Aspects of the present invention relate to a shell-and-tube heat exchanger (101), a method of using said heat exchanger, and to a hydrocarbon cracking furnace system comprising said heat exchanger. The shell-and-tube heat exchanger comprises at least: a spiral baffle (7) arranged to provide a helical flow path through the shell body (103) and an outlet collector pipe (4) that supports the spiral baffle and that extends substantially coaxially within the shell body, wherein the outlet collector pipe is mounted to and passes through a second tubesheet (106) bordering the shell body (103) on one terminal end, and wherein the outlet collector pipe (4) is separated from a first tubesheet (105) on the opposing terminal end by a gap that allows a shell-side fluid (F2) to exit the shell body (103).

Systems and methods for producing Linear Alpha Olefins are disclosed. The system includes two or more reaction units that are arranged in parallel. The system includes a cleaning unit configured to flush one or more of the reaction units that is off-stream while the remaining reaction units are on-stream for producing Linear Alpha Olefins.

The present invention proposes a thermochemical battery cycle, termed a Benzene Battery cycle, for efficiently storing electric and/or thermal energy for later and/or distant use. The methods and apparatus herein proposed utilize reversible endothermic fluid and exothermic fluid thermochemical means for efficiently storing H2 in a liquid state at STP. The present invention is generally based on the technology disclosed in U.S. Pat. Nos. 3,225,538, 3,067,594, and 3,871,179, wherein techniques are described for creating a unique thermochemical cycle, termed the Bland/Ewing Cycle (B/E Cycle) after the co-inventors, involving “molecular expansion” and “molecular compression”. The present invention is also based on US Patent Application #18-0954634 which proposes optimizing endothermic and exothermic “segments” for the creation of either Combined Heat and Power (CHP) or Combined Cycle (CC) applications.

A process for producing alkoxylates features a high growth ratio without the need of interim storage of a pre-polymer produced in a first reactor. The process may involve reacting a monomeric educt in the presence of a catalyst and a starting material in a first reactor equipped with a first circulation loop and thereafter passing a pre-polymer that is produced of the first circulation loop to a second reactor equipped with a second circulation loop, where a desired polymer is produced. The first reactor may comprise a smaller volume than the second reactor. The growth ratio, defined as a final batch volume of the second reactor divided by a minimum initial volume of the starting material in the first reactor, is at least 80:1.

A method of preparing an aromatic vinyl compound-vinyl cyanide compound polymer includes polymerizing a reaction mixture containing an aromatic vinyl compound, a vinyl cyanide compound, and an organic solvent in a reactor and transferring the vaporized reaction mixture present in the upper space of the reactor to a heat exchanger via a pipe and condensing the vaporized reaction mixture. The condensed reaction mixture is transferred to one side of the pipe and sprayed into the pipe, the flow velocity of the reaction mixture vaporized in the reactor is reduced, and temperature is lowered. Accordingly, a phenomenon wherein polymer particles in a reactor are sucked into a heat exchanger is prevented, and occurrence of polymerization in the heat exchanger is suppressed. Therefore, productivity and quality may be improved.

A system and method for producing liquid hydrocarbons is disclosed. In one embodiment, the system includes at least one renewable power system configured to generate a DC electric power output; at least one water electrolysis system in electrical communication with the renewable power system and configured to utilize the DC electric power to produce a hydrogen output; and a liquid hydrocarbon synthesis system in fluid communication with the water electrolysis system and configured to utilize the hydrogen output and a carbon dioxide feed to produce a liquid hydrocarbon product.

Disclosed are a method and system for propylene polymerization utilizing a loop slurry reactor. The method can include polymerizing propylene in a loop slurry reactor under bulk polymerization conditions to produce polypropylene. The propylene polymerization system can include i) a loop slurry reactor and a heat exchange system that is configured to cool the legs of the loop slurry reactor and/or ii) an inlet manifold that is configured to connect flashline heaters to a separator.

A process for the preparation of ethylene homopolymers or copolymers in a facility having a high-pressure tubular reactor and a preheater, wherein a reaction fluid introduced into the reactor at a reactor inlet is heated in the preheater and the average velocity of the reaction fluid in the preheater is lower than the average velocity of the reaction fluid in the tubular reactor and the ratio of the average velocity in the tubular reactor to the average velocity of the reaction fluid in the preheater is in the range from 1.5 to 5.

The present disclosure relates to systems and methods useful for providing one or more chemical compounds in a substantially pure form. In particular, the systems and methods can be configured for separation of carbon dioxide from a process stream, such as a process stream in a hydrogen production system. As such, the present disclosure can provide systems and method for production of hydrogen and/or carbon dioxide.

A process for producing at least one haloolefin by dehydrohalogenating a hydrohaloalkane. The dehydrohalogenation process is performed in the liquid phase or vapor phase in the presence or absence of a catalyst at a temperature sufficient to effect conversion of the hydrohaloalkane to a haloolefin (haloalkene) in an adiabatic reaction zone. In particular, the adiabatic reaction zone comprises at least two serially-connected adiabatic reactors and having a heat exchanger disposed in sequence and in fluid communication between each two reactors in series.