Dioxycle

This disclosure relates to systems and methods for valorization of carbon monoxide tail gas streams for chemical production lines. A disclosed system includes a chemical production line with a separator to remove a product gas from a tail gas that includes carbon monoxide, separators to remove a second product gas from the tail gas, and electrolyzer systems to convert carbon monoxide in the tail gas to other useful chemicals including the second product gas. The electrolyzer products are recycled back to one or more separation stages.

This disclosure relates to systems and methods for separating the output stream of a carbon monoxide electrolyzer. A disclosed system includes a carbon monoxide electrolyzer which uses a dual-pressure cryogenic separation system to separate the output gas stream into three portions including a hydrogen-rich vapor stream, a CO-rich stream, and a purified ethylene stream. The cryogenic separation system includes a refrigeration system, a high-pressure gas/liquid separator, an expansion valve, and a low-pressure stripping column.

This disclosure relates to systems and methods for creating and using separators, containing boron species, that are used in electrolyzers. A disclosed separator for an electrolyzer cell includes a porous substrate having pores which provide a fluid path through the porous substrate from a first side of the porous substrate to an opposite side of the porous substrate, which is formed of one or more hydrophobic polymers or copolymers, and a coating that coats the pores of the porous substrate while maintaining the fluid path, where the coating is formed of an alcohol-containing polymer reacted with a boron-containing species.

This disclosure relates to systems and methods for gas separation in oxocarbon electrolyzers. A disclosed method includes supplying an oxocarbon to an input stream of a cathode chamber of an oxocarbon electrolyzer, converting the oxocarbon to a product gas in the cathode chamber, obtaining an output stream, with the product gas and residual oxocarbon, from the oxocarbon electrolyzer, and recycling a portion of the product gas, from the output stream, to the input stream.

This disclosure relates to systems and methods for conversion of carbon dioxide to carbon monoxide. A disclosed method includes supplying reactants including carbon dioxide, hydrogen, and methane to a catalytic reactor, and converting the carbon dioxide and methane to carbon monoxide. The disclosed method also includes supplying oxygen and methane to a partial oxidation reactor, supplying additional carbon dioxide to the partial oxidation reactor for conversion to carbon monoxide, and transporting an output stream of the partial oxidation reactor to an outer chamber of the catalytic reactor to facilitate catalytic reactions therein.

This disclosure relates to systems and methods for gas separation in oxocarbon electrolyzers. A disclosed method includes supplying an oxocarbon to an input stream of a cathode chamber of an oxocarbon electrolyzer, converting the oxocarbon to a product gas in the cathode chamber, obtaining an output stream, with the product gas and residual oxocarbon, from the oxocarbon electrolyzer, and recycling a portion of the product gas, from the output stream, to the input stream.

This disclosure relates to systems and methods for gas separation in oxocarbon electrolyzers. A disclosed method includes supplying an oxocarbon to an input stream of a cathode chamber of an oxocarbon electrolyzer, converting the oxocarbon to a product gas in the cathode chamber, obtaining an output stream, with the product gas and residual oxocarbon, from the oxocarbon electrolyzer, and recycling a portion of the product gas, from the output stream, to the input stream.

Methods and systems for the valorization of carbon monoxide emissions from metallurgical furnaces into highly valuable low-carbon footprint chemicals using carbon monoxide electrolysis are disclosed herein are disclosed. A disclosed method includes operating a metallurgical furnace; obtaining, in connection with the operation of the metallurgical furnace, a volume of carbon monoxide; supplying the volume of carbon monoxide to a cathode area of a carbon monoxide electrolyzer to be used as a reduction substrate; and generating, using the carbon monoxide electrolyzer, the reduction substrate, and an oxidation substrate, a volume of generated chemicals. The volume of generated chemicals is at least one of: a volume of hydrocarbons, a volume of organic acids, a volume of alcohol, a volume of olefins and a volume of N-rich organic compounds.

Methods and systems for fluid distribution in electrolyzer cells are disclosed herein. A disclosed a carbon oxide electrolyzer includes a polar plate, a cathode area, a carbon oxide reactant gas serving as a reduction substrate in the cathode area, a cathode fluid inlet, a cathode fluid outlet, an anode area, a liquid oxidation substrate in the anode area; and a compressed electrically conductive mesh: (i) in electrical contact with the polar plate; and (ii) that provides a fluid path from the cathode fluid inlet to the cathode fluid outlet for the carbon oxide reactant gas through the compressed electrically conductive mesh.

Integrations of carbon monoxide electrolyzers and chlor-alkali electrolyzers are disclosed herein. The disclosed integrations include novel process chains for the valorization of oxocarbons into hydrochloric acid, vinyl chloride, vinyl acetate, ethylene oxide, and other useful chemicals. The disclosed integrations further include novel ways to operate the electrolyzers in tandem to increase the efficiency of both reactors. This disclosure also includes novel ways to balance the operation of both electrolyzers to assure they are operating at an optimal level to take advantage of the benefits of the disclosed integrations.