In various embodiments, a microreactor features a corrosion-resistant microchannel network encased within a thermally conductive matrix material that may define therewithin one or more hollow heat-exchange conduits.

The invention discloses residual gas heat exchange combustion-supporting system based on a methanol-water mixture reforming hydrogen production system and a method thereof, wherein the residual gas heat exchange combustion-supporting system comprises a reformer, a heat exchange tube and an air intake device; the reformer is provided with a reforming chamber, a separating device, a combustion chamber and an exhaust vent, the residual gas produced by the reformer is discharged from the exhaust vent to the first delivery passage of the heat exchange tube; the heat exchange tube has coaxial double-layer first and second delivery passages. The invention enables to fully reclaim the heat from the residual gas discharged by the reformer, so that the outside air is warmed before entering the reformer, which in turn makes the warmed outside air attain a very good combustion-supporting effect.

A cell structure is provided that is (i) capable of handling, on inner and outer surfaces, heat transfer requirements of heat exchangers and/or be a substrate for coatings for catalytic reactors, (ii) able to be easily combined and interconnected into a variety of shapes, and (iii) may be created in an additive manufacturing process. The provided cell structure may be replicated and interconnected with other cell structures to create lattice structures in a variety of shapes. Accordingly, the cell structure may be used to build a heat exchanger or catalytic reactor that has reduced weight compared to traditional architectures.

Process for the preparation of urea granules comprising the steps of obtaining an aqueous urea solution from one or more synthesis and recovery steps wherein ammonia and carbon dioxide are reacted together, subjecting the aqueous urea solution to an evaporation step wherein water is removed to obtain a urea melt (1), processing and treating said urea melt in a granulation step (7) and optionally in a cooling section (10) to obtain solid urea granules (14); the process further comprises a scrubbing step (3) of granulation offgas and an atmospheric evaporation step (32) to recover a urea solution (2) and a water-saturated air stream (18): the water-saturated air stream is fed back to the scrubbing section (3) without condensation, and the recovered urea solution is conveyed to the granulation step (7).

A system and method for cracking hydrocarbon feed streams may include a pre-heating assembly configured to heat the hydrocarbon feed stream to provide a pre-heated feed stream including a vaporized portion and a pre-heated liquid portion. The pre-heating assembly may include an electrically-powered heater, an electrically-powered heater and a steam heater, or an electrically-powered heater and heat transfer fluid configured to heat the feed stream. The pre-heating assembly also may include a flash device positioned to receive the vaporized portion and the pre-heated liquid portion and separate the vaporized portion of the pre-heated feed stream or the pre-heated liquid hydrocarbon feed stream from the remaining liquid portion of the feed stream to supply a flash device outlet stream. The system further may include a steam cracking furnace positioned to receive the flash device outlet stream and heat the flash outlet device stream to provide a product stream including cracked hydrocarbons.

The present invention discloses a hydrogen sulfide reactor vessel with an external heating system that is conductively and removably attached to an exterior portion of the reactor vessel. Also disclosed are processes for producing hydrogen sulfide utilizing the reactor vessel.

The present invention relates to a production apparatus for hydrothermal synthesis of lithium iron phosphate, which comprises first stirring devices, a preheating device, a second stirring device, and a drying device, wherein there are two first stirring devices, and the preheating device comprises a housing, a heating box, two feeding pumps, two first transfer assemblies, and several first heating tubes; the two first transfer assemblies each comprise an inlet pipe, an outlet pipe, and several transfer branch tubes. In the present application, the arrangement of multiple transfer branch tubes increases the heated area of the slurry, enhances the thermal conduction efficiency, and improves the heating effect. The equidistant arrangement of the transfer branch tubes ensures uniform heating of the slurry within the multiple transfer branch tubes, guaranteeing the heating effect. The arrangement of the preheating device can reduce the heating time of the slurry, thereby enhancing the heating effect.

The present disclosure relates to a plant for performing polymerization, such as the polymerization of ethylene, having a recycle connection with two or more cooling channels arranged in parallel, a process for polymerization and downstream processes, and a plant for polymerization, comprising the following plant components in fluid communication: a) A reactor with an inlet side and an outlet side; b) A recycle connection positioned in fluid communication between the outlet side of the reactor and the inlet side of the reactor; wherein the recycle connection comprises two or more cooling channels arranged in parallel.

The present disclosure relates to plants and processes for forming polymers. In some embodiments, a process of forming a polymer includes supplying a. feed having one or more olefin monomers and a solvent. The process includes introducing the feed with a catalyst to form a reaction mixture in a reactor. The process includes moving a. reactor effluent from the reactor and comingling, in a mixer or in a line, the reactor effluent with a first concentrated polymer solution to form a mixture. The process includes introducing the mixture to a heat exchanger to form a heated mixture and introducing the heated mixture to a pressure let down valve followed by introducing the heated mixture to a phase separator. The process includes removing a second concentrated polymer solution from the phase separator. The process includes introducing the second concentrated, polymer solution to the mixer or the line.

A system and a method for producing oligomers are disclosed. The oligomers are produced in a loop reactor by contacting a mono-olefin with a catalyst. The byproduct produced during the process is collected in one or more settling legs of the loop reactor.