A process for treating effluent streams in a renewable transportation fuel production process is described. One or more of the sour water stream and an acid gas stream are treated directly in thermal oxidation section. The process allows the elimination or size reduction of a sour water stripper unit, waste water treatment plant, and sulfur recovery unit.

The present disclosure relates to a process for treating a feedstock containing tall oil, the process including separation of a light stream from the feedstock, followed by removal of a heavy fraction from the feedstock, in which process the separation of the light stream from the feedstock a fractionator is used and at least one product is collected from the light stream. The disclosure also relates to an apparatus for use in the process and use of a fractionator in dehydration of a feedstock containing tall oil.

A liquor distillation system, comprising one or more channeled loops fluidly couplable to a boiler and a condenser, the condenser adapted to condense alcoholic vapors from a heated liquor wherein the one more channeled loops include an entrance point, an exit point, a split point, and a recombination point such that the heated liquor enters the one or more channeled loops from the entrance point, to the split point where the heated liquor is split into two separate opposite subchannels and recombined at the recombination point; one or more connection pipes adapted to connect the one or more channeled loops to another channeled ring; one or more drain valves; and a liquor outlet.

A method and systems are provided for controlling degradation in a reboiler using a hydrophobic coating. A reboiler is provided that includes a steam shell and a plurality of tubes. The reboiler includes a low surface-energy coating on a surface of the plurality of tubes.

A distribution chamber disclosed discharges a fraction which have been fractionally distilled in embodiments of the disclosed technology. The distribution chamber is removably connected to a distillation head such that between each fraction, the distribution head can be switched with another. Each such distribution head has a vertically extending drain and/or discharge port, or plurality thereof, to distribute a discharged fraction into a single flask, such port being at an acute angle to an intake port. In this manner, the discharge/drain port(s) can be vertically oriented and at a bottom side of the distribution chamber when the intake port is connected to the distillation head.

An equal temperature fractional distillation chamber allows for more precise distillation by providing solid particulate matter with air spaces, such as Raschig rings, to radiate heat from the bottom of the chamber to an area where the vapors are separated. This area is unencumbered by Raschig rings or other devices and can be reduced in size, as necessary, to be less than 20% or 10% of the vertical height of the chamber. Further, a distillation key can enter from the top of the chamber and come down into the chamber with rings which encourage condensation of vapors which rise upwards. In this manner, a very controlled and accurate distillation can be achieved due to the higher heat capacity of the glass or other materials around the unencumbered region.

The invention provides a built-in micro-interface oxidation system for preparing terephthalic acid from p-xylene. The oxidation system includes a first reactor, a rectifying tower and a second reactor which are sequentially connected. A first outlet is disposed on a side wall of the first reactor; a first inlet is disposed on a side wall of the second reactor; a material inlet is disposed on a side wall of the rectifying tower; and a material outlet is disposed at a bottom of the rectifying tower. The first outlet is connected with the material inlet of the rectifying tower; the first inlet is connected with the material outlet of the rectifying tower. Micro-interface units are arranged in the first reactor and the second reactor for dispersing and crushing air into bubbles. Through disposing micro-interface units in reactors, problems of high energy consumption, high raw material consumption and low reaction efficiency are solved.

Vapor flow-diverting devices that re-direct upwardly flowing vapor, for example, in a downward direction across condenser tubes disposed in the upper or top section of a vapor-liquid contacting apparatus, are described. These devices are particularly beneficial in tubular condensers within distillation columns and may be used in combination with other associated equipment (e.g., a deflector plate and divider plate) as well as in combination with the tube surface enhancements to improve the heat transfer coefficient.

By incorporating an additional TCS and/or DCS redistribution reactor in the TCS recycle loop and/or DCS recycle loop, respectively, of a process and system for silane manufacture, efficiencies in the production of silane are realized. Further improvements in efficiencies may be realized by directing a portion of the product from a redistribution reactor into a distillation column, and specifically into the distillation column that formed the feedstock that went into the redistribution reactor.

A process and an apparatus are disclosed for a compact processing assembly to fractionate lighter components from mixed hydrocarbon streams. The hydrocarbon stream is supplied to the processing assembly between an absorbing means and a mass transfer means. A distillation vapor stream is collected from the upper region of the absorbing means and cooled in a first heat and mass transfer means inside the processing assembly to partially condense it, forming a volatile stream and a condensed stream. The condensed stream is supplied to the absorbing means as its top feed. A distillation liquid stream is collected from the lower region of the mass transfer means and heated in a second heat and mass transfer means inside the processing assembly to strip out its volatile components, forming a relatively less volatile stream and a vaporized stream. The vaporized stream is supplied to the mass transfer means as its bottom feed.