Co-processing for control of hydropyrolysis processes and products thereof
First Claim
1. A process for producing liquid products comprising:
- a) hydropyrolyzing a biomass-containing feedstock, and a separate co-feed different from the biomass-containing feedstock, in a hydropyrolysis reactor vessel comprising a deoxygenating catalyst and operating at a hydrogen partial pressure from about 7 barg (102 psig) to about 55 barg (798 psig) to produce a hydropyrolysis reactor output comprising at least one non-condensable gas, a partially deoxygenated hydropyrolysis product and char;
b) removing substantially all char particles from the hydropyrolysis reactor output to provide a purified hydropyrolysis reactor vapor stream having reduced char content;
c) hydroconverting at least a portion of the purified hydropyrolysis reactor vapor stream in a hydroconversion reactor vessel comprising a hydroconversion catalyst to produce a hydroconversion reactor output; and
d) recovering a substantially fully deoxygenated hydrocarbon liquid and a gaseous mixture from the hydroconversion reactor output;
wherein the separate co-feed comprises an oxygenated plastic; and
wherein oxygen present in the oxygenated plastic is at least partly removed in the hydropyrolysis reactor vessel and a structure of the oxygenated plastic, following oxygen removal, is used to generate aliphatic hydrocarbons or aromatic hydrocarbons in the substantially fully deoxygenated hydrocarbon liquid,wherein the oxygenated plastic comprises poly(methyl methacrylate) or polyamide, and a feed rate of the oxygenated plastic is adjusted in response to a measured or desired change in a yield or cetane number of a diesel boiling range fraction of the substantially fully deoxygenated hydrocarbon liquid, orwherein the oxygenated plastic comprises polycarbonate or polyethylene terephthalate, and a feed rate of the oxygenated plastic is adjusted in response to a measured or desired change in a yield or octane number of a gasoline boiling range fraction of the substantially fully deoxygenated hydrocarbon liquid.
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Abstract
Hydropyrolysis processes are described, in which differing types of feedstocks, including at least one biorenewable feedstock, namely a biomass-containing feedstock, may be co-processed to allow enhancements in operating conditions and/or product properties, depending on changing customer requirements and/or overall market demands. According to specific embodiments, an aliphatic hydrocarbon precursor or an aromatic hydrocarbon precursor is co-processed with the biomass-containing feedstock to enhance an operating condition (e.g., a reactor temperature profile) of the hydropyrolysis process and/or a property (e.g., cetane number) of a liquid product (e.g., a diesel boiling range fraction) obtained from a substantially fully deoxygenated hydrocarbon liquid.
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Citations
18 Claims
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1. A process for producing liquid products comprising:
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a) hydropyrolyzing a biomass-containing feedstock, and a separate co-feed different from the biomass-containing feedstock, in a hydropyrolysis reactor vessel comprising a deoxygenating catalyst and operating at a hydrogen partial pressure from about 7 barg (102 psig) to about 55 barg (798 psig) to produce a hydropyrolysis reactor output comprising at least one non-condensable gas, a partially deoxygenated hydropyrolysis product and char; b) removing substantially all char particles from the hydropyrolysis reactor output to provide a purified hydropyrolysis reactor vapor stream having reduced char content; c) hydroconverting at least a portion of the purified hydropyrolysis reactor vapor stream in a hydroconversion reactor vessel comprising a hydroconversion catalyst to produce a hydroconversion reactor output; and d) recovering a substantially fully deoxygenated hydrocarbon liquid and a gaseous mixture from the hydroconversion reactor output; wherein the separate co-feed comprises an oxygenated plastic; and wherein oxygen present in the oxygenated plastic is at least partly removed in the hydropyrolysis reactor vessel and a structure of the oxygenated plastic, following oxygen removal, is used to generate aliphatic hydrocarbons or aromatic hydrocarbons in the substantially fully deoxygenated hydrocarbon liquid, wherein the oxygenated plastic comprises poly(methyl methacrylate) or polyamide, and a feed rate of the oxygenated plastic is adjusted in response to a measured or desired change in a yield or cetane number of a diesel boiling range fraction of the substantially fully deoxygenated hydrocarbon liquid, or wherein the oxygenated plastic comprises polycarbonate or polyethylene terephthalate, and a feed rate of the oxygenated plastic is adjusted in response to a measured or desired change in a yield or octane number of a gasoline boiling range fraction of the substantially fully deoxygenated hydrocarbon liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification