Calvin L. Ayres is a notable inventor based in New Tripoli, Pennsylvania. He holds five patents that showcase his contributions to the fields of cryogenics and hydrocarbon recovery. His work has significantly impacted energy efficiency and resource recovery processes.

Latest Patents

One of his latest patents is the "Production of liquid nitrogen using liquefied natural gas as sole." This invention relates to a process for liquefaction of a nitrogen stream produced by a cryogenic air separation unit. Cold liquid natural gas (LNG) is employed as a refrigerant. A critical feature of this invention is maintaining the temperature of the vaporizing LNG lower than the critical temperature of the nitrogen stream being liquefied. The process involves compressing the nitrogen stream to at least 350 psi in a multistage compressor, with interstage cooling provided by heat exchange against vaporizing LNG. Further cooling and flashing of a portion of the liquid nitrogen stream produce a quantity of liquid nitrogen that is free of hydrocarbon contamination and suitable for recycling to the air separation unit.

Another significant patent is the "Mixed refrigerant/expander process for the recovery of C3+ hydrocarbons." This energy-efficient process focuses on the recovery and purification of C3+ hydrocarbons from high-pressure natural gas or refinery/petrochemical feed gas. The high-pressure feed gas is initially cooled by heat exchange with a multi-component refrigerant fluid circulating in a closed-loop cycle, condensing a large portion of the C3+ hydrocarbons. The non-condensed remaining gas is work expanded to an intermediate pressure, providing refrigeration for condensing the remaining C3+ hydrocarbons. The condensed C3+ hydrocarbon liquid streams are combined and further purified by distillation in an integrated distillation column.

Career Highlights

Calvin L. Ayres has worked with prominent companies such as Air Products and Chemicals, Inc. His experience in these organizations has contributed to his innovative approaches in the field of energy and resource management.

Collaborations

Throughout his career, Ayres has collaborated with notable professionals, including Howard C. Rowles and Rakesh Agrawal. These collaborations have likely enriched his work and led to advancements in his patented technologies.

Conclusion

Calvin L. Ayres is a distinguished inventor whose patents reflect his commitment to innovation in energy efficiency and

Profile summary based on public USPTO records.

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