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    Energy-efficient systems including vapor compression for biofuel or biochemical plants
    5.
    发明授权
    Energy-efficient systems including vapor compression for biofuel or biochemical plants 有权

    公开(公告)号：US11458413B2

    公开(公告)日：2022-10-04

    申请号：US15711699

    申请日：2017-09-21

    Applicant: Energy Integration, Inc.

    Inventor： Lynn Allen Crawford ,  William Bryan Schafer, III

    IPC: B01D1/28 ,  B01D3/32 ,  B01D3/00 ,  B01D3/14 ,  C12P7/40

    Abstract: Processes and systems are provided to compress vapors produced in distillation and recover the heat of condensation through vapor compression and to derive mechanical, thermal, and electrical energy from a combined heat and power system, while maintaining the plant's original ability to operate. The plant's existing distillation system, steam generation, and electrical demand determine the design basis for the retrofit system that is targeted at an optimized combination of energy usage, energy cost, and environmental impact. Vapor compression (by mechanical vapor recompression and/or thermal vapor recompression) minimizes the total energy usage. Optionally, combined heat and power provides a means of converting energy between fuel, electricity, and thermal energy in a manner that best complements plant requirements and energy economics and minimizes inefficiencies and energy losses.

    Methods and systems for energy-efficient drying of co-products in biorefineries
    6.
    发明授权
    Methods and systems for energy-efficient drying of co-products in biorefineries 有权

    公开(公告)号：US10787407B2

    公开(公告)日：2020-09-29

    申请号：US16721896

    申请日：2019-12-19

    Applicant: Energy Integration, Inc.

    Inventor： Lynn Allen Crawford ,  William Bryan Schafer, III

    IPC: C07C29/80 ,  B01D3/00 ,  B01D5/00 ,  C07C29/82

    Abstract: A method is disclosed for improving the energy efficiency of biorefinery drying operations through integration of a dryer that utilizes the heat of condensation of process vapors to dry material whose emissions are captured with energy recovery. The dryer separates clean process vapors (e.g., ethanol) and steam from vapors containing volatile organic compounds and entrained materials, to minimize the need for vapor cleanup. An indirect dryer condenses vapors in a tube dryer similar to a steam tube dryer, but utilizing compressed process vapors, transferring the heat to wet material undergoing drying. The resulting exhaust vapors are either directed to a process stage that requires heat (e.g., distillation) and minimizes the need for vapor cleanup or to an out-of-contact heat exchanger that produces vapors for process use, or to another dryer as an additional effect. Mechanical-vapor recompression or thermal-vapor recompression are employed to produce vapors that optimize overall energy recovery.

    Methods and systems for energy-efficient drying of co-products in biorefineries
    8.
    发明授权
    Methods and systems for energy-efficient drying of co-products in biorefineries 有权

    公开(公告)号：US11034638B2

    公开(公告)日：2021-06-15

    申请号：US17008703

    申请日：2020-09-01

    Applicant: Energy Integration, Inc.

    Inventor： Lynn Allen Crawford ,  William Bryan Schafer, III

    IPC: B01D3/00 ,  C07C29/80 ,  B01D5/00 ,  C07C29/82 ,  B01D35/18 ,  F26B3/04

    Abstract: A method is disclosed for improving the energy efficiency of biorefinery drying operations through integration of a dryer that utilizes the heat of condensation of process vapors to dry material whose emissions are captured with energy recovery. The dryer separates clean process vapors (e.g., ethanol) and steam from vapors containing volatile organic compounds and entrained materials, to minimize the need for vapor cleanup. An indirect dryer condenses vapors in a tube dryer similar to a steam tube dryer, but utilizing compressed process vapors, transferring the heat to wet material undergoing drying. The resulting exhaust vapors are either directed to a process stage that requires heat (e.g., distillation) and minimizes the need for vapor cleanup or to an out-of-contact heat exchanger that produces vapors for process use, or to another dryer as an additional effect. Mechanical-vapor recompression or thermal-vapor recompression are employed to produce vapors that optimize overall energy recovery.

    Systems and methods for integrated CO2 reuse using vapor compression
    9.
    发明授权
    Systems and methods for integrated CO2 reuse using vapor compression 有权

    公开(公告)号：US10947486B1

    公开(公告)日：2021-03-16

    申请号：US16953282

    申请日：2020-11-19

    Applicant: Energy Integration, Inc.

    Inventor： Lynn Allen Crawford ,  William Bryan Schafer, III

    IPC: C12F3/02 ,  B01D1/28 ,  B01D3/00 ,  B01D5/00 ,  B01D1/00 ,  B01D3/14

    Abstract: Systems and methods are disclosed for optimizing the process energy required for the conversion of carbon dioxide (CO2) to biochemicals through vapor compression. Mechanical or thermal vapor compression are used to minimize both the process energy and the cooling in condensers, integrating the heat required by those processes and reusing heat that is typically lost. Some variations provide a process for producing biochemicals from biomass, comprising: cooking biomass to release saccharides; fermenting the saccharides to generate a biochemical in aqueous solution, and carbon dioxide; hydrogenating the carbon dioxide with a hydrogen source to generate an additional quantity of biochemical; feeding the fermentation-derived biochemical, as well as the CO2-derived biochemical, to a distillation column for purification; and compressing vapors from the distillation column, using mechanical vapor recompression and/or thermal vapor recompression, to recover heat of distillation that is utilized elsewhere in the biorefinery to reduce overall process energy usage.

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