Chemical production processes and systems

The present disclosure relates to chemical production processes and systems.

As the production of the multyhydric alcohol compounds has increased, conversion of these compounds to higher value compounds may be desired. For example, biodiesel fuel production methods can result in the production of by-product multihydric alcohol compounds such as glycerol. This glycerol can be converted to higher value polyols such as propylene glycol. This conversion may be desired to eliminate the glycerol by-product waste stream. The present disclosure provides chemical production systems and processes that allow for the conversion of multihydric alcohol compounds.

Hydrogenolysis systems are provided that can include a reactant reservoir configured to contain a polyhydric alcohol compound and a reactor coupled to the reactant reservoir, the reactor housing an Ru-comprising hydrogenolysis catalyst and configured to expose the polyhydric alcohol compound to the catalyst, wherein the contents of the reactor is maintained at a neutral or acidic pH during the exposing.

Hydrogenolysis reactors are provided that contain a mixture comprising a polyhydric alcohol compound and an Ru-composition, wherein a pH of the mixture is neutral or acidic.

Hydrogenolysis processes are provided that can include exposing a polyhydric alcohol compound to an Ru-comprising catalyst to form a mixture, with the mixture having a neutral or acidic pH.

Processes for hydrogenolysing polyhydric alcohol compounds also include exposing a reactant mixture to an Ru-comprising catalyst, and while exposing the mixture to the catalyst, maintaining the contents of the reactor at a neutral or acidic pH. Processes also include providing a reactant mixture comprising a polyhydric alcohol compound and a base, wherein a weight ratio of the base to the compound is between 0.01 and 0.05, and exposing the mixture to a catalyst to at least partially hydrogenolyze a portion of the polyhydric alcohol compound.

Hydrogenolysis systems are provided that include a reactant reservoir coupled to a reactor, the reservoir configured to confine a reactant mixture, the reactant mixture comprising a polyhydric alcohol compound and a base, wherein a weight ratio of the base to the compound to is less than 0.05. Systems also include a reactor coupled to both a reactant reservoir and a product reservoir, a reactant mixture within the reactant reservoir, the reactant mixture comprising a polyhydric alcohol compound and a base, a product mixture within the product reservoir, the product reservoir comprising a hydrogenolyzed polyhydric alcohol compound and salts of organic acids, and wherein the moles of base are substantially equivalent to the moles of salts or organic acids.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the disclosure are described below with reference to the following accompanying drawings.

FIG. 1 is a portion of a chemical production system according to an embodiment of the disclosure.

FIG. 2 is graphical representation of data acquired utilizing the processes and methods described according to an embodiment.

FIG. 3 is graphical representation of data acquired utilizing the processes and methods described according to an embodiment.

FIG. 4 is graphical representation of data acquired utilizing the processes and methods described according to an embodiment.

FIG. 5 is graphical representation of data acquired utilizing the processes and methods described according to an embodiment.

FIG. 6 is graphical representation of data acquired utilizing the processes and methods described according to an embodiment.

FIG. 7 is graphical representation of data acquired utilizing the processes and methods described according to an embodiment.

FIG. 8 is a chemical production system according to an embodiment of the disclosure.

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Previous Patent Application:
Hydrogenolysis processes and hydrogenolysis catalyst preparation methods
Next Patent Application:
Catalytic oxy-functionalization of metal-carbon bonds
Industry Class:
Organic compounds -- part of the class 532-570 series

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