Systems, devices, and methods for a reactor feed distribution system. In some aspects, a multi-section pipe and an orifice plate. The multi-section pipe includes a first pipe section that defines a first channel and a second pipe section that defines a second channel. Second pipe section includes a first portion extending along a first longitudinal axis, a second portion extending along a second longitudinal axis that is angularly disposed relative to the first longitudinal axis, and a curved portion connecting the first portion to the second portion. The orifice plate is configured to be positioned at an inlet or a first outlet of the first pipe section. The orifice plate includes a maximum transverse dimension that is less than a minimum transverse dimension of each of the first and second channel.

The present invention relates to a reactor tube assembly comprising a reactor tube having a tube length and an inner surface, at least two tubular inserts each having an insert length and comprising i) a shell having an exterior portion at least partially contacting the inner surface of the reactor tube and ii) at least one fin projecting from the shell in a radial direction towards a center of said insert, wherein the inserts are positioned in the tube in a stacked manner such that the fins of the at least two inserts are offset in a longitudinal direction a particulate catalyst in contact with at least the shell and the fins of the inserts.

A system and method for oxidative dehydrogenation including a first reactor having a first ODH catalyst to dehydrogenate an alkane to a corresponding alkene at a first temperature and facilitate generation of steam, a second reactor having a second ODH catalyst to dehydrogenate alkane in a first-reactor effluent to the corresponding alkene at a second temperature that may be greater than the first temperature and facilitate generation of steam, and a third reactor having a third ODH catalyst to dehydrogenate alkane in a second-reactor effluent to the corresponding alkene at a third temperature that may be greater than the first temperature or the second temperature and facilitate generation of steam.

A process for reducing the environmental contaminants in a ISO 8217: 2017 Table 2 compliant Feedstock Heavy Marine Fuel Oil and resulting product, the process involving: mixing a Feedstock Heavy Marine Fuel Oil with a Activating Gas to give a feedstock mixture; contacting the feedstock mixture with one or more catalysts to form a Process Mixture; separating the Product Heavy Marine Fuel Oil from the Process Mixture and, discharging the Product Heavy Marine Fuel Oil. The Product Heavy Marine Fuel Oil complies with ISO 8217:2017 Table 2 for residual marine fuel and the Environmental Contaminants, which are selected from the group consisting of: a sulfur; vanadium, nickel, iron, aluminum and silicon and combinations thereof, are less than 0.5 wt. %. The Product Heavy Marine Fuel Oil can be used as blending stock for an ISO 8217:2017 Table 2 compliant, IMO 2020 compliant, low sulfur heavy marine fuel composition.

The present disclosure discloses a continuous preparation method for a penem intermediate MAP. The continuous preparation method includes the following steps: step S1, in a column-type continuous reactor, using a rhodium-loaded catalyst to catalyze 4-nitrobenzyl(R)-2-diazo-4-((2R,3S)-3-((R)-1-hydroxyethyl)-4-oxoazetidin-2-yl)-3-oxopentanoate to generate a cyclization reaction so as to form a first intermediate, herein the rhodium-loaded catalyst is loaded in the column-type continuous reactor, and the rhodium-loaded catalyst has the following structural formula:

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step S2, performing an esterification reaction on the first intermediate, a diphenyl chlorophosphate and a diisopropylethylamine in a second continuous reactor, to obtain a product system containing the penem intermediate MAP; and step S3, performing crystallization treatment on the product system, to obtain the penem intermediate MAP.

A catalytic reactor comprises a floating particle catcher unit and a particle catching surface which extracts particles from the fluid flow stream above the catalyst bed whereby at least a part of the particles settles on the particle catching surface instead of clogging the catalyst bed.

A process for producing a catalytically active multielement oxide comprising the elements Mo, W, V and Cu, wherein at least one source of the elemental constituents W of the multielement oxide is used to produce an aqueous solution, the resultant aqueous solution is admixed with sources of the elemental constituents Mo and V of the multielement oxide, drying of the resultant aqueous solution produces a powder P, the resultant powder P is optionally used to produce geometric shaped precursor bodies, and the powder P is or the geometric shaped precursor bodies are subjected to thermal treatment to form the catalytically active composition, wherein the aqueous solution used for drying comprises from 1.6% to 5.0% by weight of W and from 7.2% to 26.0% by weight of Mo, based in each case on the total amount of aqueous solution.

A process for producing a catalytically active multielement oxide comprising the elements Mo, W, V and Cu, wherein at least one source of the elemental constituents W of the multielement oxide is used to produce an aqueous solution, the resultant aqueous solution is admixed with sources of the elemental constituents Mo and V of the multielement oxide, drying of the resultant aqueous solution produces a powder P, the resultant powder P is optionally used to produce geometric shaped precursor bodies, and the powder P is or the geometric shaped precursor bodies are subjected to thermal treatment to form the catalytically active composition, wherein the aqueous solution used for drying comprises from 1.6% to 5.0% by weight of W and from 7.2% to 26.0% by weight of Mo, based in each case on the total amount of aqueous solution.

A process for manufacturing aliphatic amines and nitriles by using the Fischer Tropsch synthesis (FTS), in the production of chain-lengthened hydrocarbons from CO and H.sub.2 and their terminal nitrogen functionalization using ammonia. The method can include activating a catalyst with a feed gas, wherein the feed gas comprises H.sub.2/CO mixtures; providing a temperature between 180° C. and 300° C. under a pressure between 1 bar to 25 bar; wherein the nitrogenates include at least one aliphatic amine and/or nitrile; and setting or adjusting the H.sub.2/CO ratio to selectively synthesize amines and/or nitriles over other nitrogen containing compounds.

A process for manufacturing aliphatic amines and nitriles by using the Fischer Tropsch synthesis (FTS), in the production of chain-lengthened hydrocarbons from CO and H.sub.2 and their terminal nitrogen functionalization using ammonia. The method can include activating a catalyst with a feed gas, wherein the feed gas comprises H.sub.2/CO mixtures; providing a temperature between 180° C. and 300° C. under a pressure between 1 bar to 25 bar; wherein the nitrogenates include at least one aliphatic amine and/or nitrile; and setting or adjusting the H.sub.2/CO ratio to selectively synthesize amines and/or nitriles over other nitrogen containing compounds.