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公开(公告)号：US20230322652A1
公开(公告)日：2023-10-12
申请号：US18209099
申请日：2023-06-13
发明人： Thiago Righi , Chenxu Shi , Virginia Andrade , Stephan Blum
摘要： The present disclosure provides for organic solvent production via distillation and dehydration by: directing portions of a feed stream to a first and second distillation columns operating at a different pressures from each other, wherein the organic solvent is preferably an alcohol and more preferably ethanol; generating, in the first distillation column, a vaporous first overhead stream; directing the vaporous first overhead stream directly to a rectification system; generating, in the second distillation column, a vaporous second overhead stream; forming a condensed second overhead stream from the vaporous second overhead stream; directing, at least a portion of the condensed second overhead stream to the rectification system; generating, via the rectification system, a third overhead stream; directing at least a portion of the third overhead stream to a separation system; and generating, in the separation system, an enriched solvent stream.
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公开(公告)号：US20230010850A1
公开(公告)日：2023-01-12
申请号：US17862780
申请日：2022-07-12
发明人： Thiago Righi , Chenxu Shi , Virginia Andrade , Stephan BLUM
摘要： The present disclosure provides for organic solvent production via distillation and dehydration by: directing portions of a feed stream to a first and second distillation columns operating at a different pressures from each other, wherein the organic solvent is preferably an alcohol and more preferably ethanol; generating, in the first distillation column, a vaporous first overhead stream; directing the vaporous first overhead stream directly to a rectification system; generating, in the second distillation column, a vaporous second overhead stream; forming a condensed second overhead stream from the vaporous second overhead stream; directing, at least a portion of the condensed second overhead stream to the rectification system; generating, via the rectification system, a third overhead stream; directing at least a portion of the third overhead stream to a separation system; and generating, in the separation system, an enriched solvent stream.
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公开(公告)号：US20200086227A1
公开(公告)日：2020-03-19
申请号：US16694087
申请日：2019-11-25
IPC分类号： B01D3/00 , B01J20/18 , B01J20/34 , C07C29/80 , B01D3/14 , B01D3/06 , B01D61/36 , B01D3/32 , B01D53/26 , B01D15/20
摘要： The present disclosure provides processes and systems for dehydrating a byproduct stream in ethanol production. In one embodiment, a feed mixture is distilled with one or more distillation units to remove at least a portion of the water, and form a first byproduct stream. The first byproduct stream is contacted with a molecular sieve unit, thereby forming a product stream. The molecular sieve unit is cyclically contacted with at least a portion of the product stream to regenerate the molecular sieve unit and form one or more regenerate streams. A second byproduct stream including at least one of (1) the regenerate streams and (2) at least a portion of the fusel oil stream is contacted with a separation system, thereby forming a permeate and a retentate. At least a portion of the retentate is forwarded into the product stream.
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公开(公告)号：US11779858B2
公开(公告)日：2023-10-10
申请号：US17135213
申请日：2020-12-28
CPC分类号： B01D3/148 , B01D1/26 , B01D1/28 , B01D3/002 , B01D3/007 , B01D3/145 , B01D15/203 , C07C29/80 , B01D3/005 , B01D61/36 , B01D61/364 , C07C31/08
摘要： The present disclosure provides processes and systems for ethanol production. In one embodiment, a first beer column receives a first portion of a feed mixture including ethanol and water to form a first beer column bottom stream and a first beer column vaporous overhead stream. A beer column receives a second portion of the feed mixture. A first portion of the first beer column bottom stream is forwarded to a first beer column reboiler. A second portion of the first beer column bottom stream is forwarded to a plurality of evaporators. A condensed portion of the first beer column vaporous overhead stream is forwarded to a stripper column. The stripper column forms a feed stream, which is contacted with a separation system, thereby forming a permeate and a retentate. The permeate is forwarded directly to at least one selected from the first beer column and the stripper column.
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公开(公告)号：US20190336882A1
公开(公告)日：2019-11-07
申请号：US16405374
申请日：2019-05-07
摘要： The present disclosure provides processes and systems for ethanol production. In one embodiment, a first beer column receives a first portion of a feed mixture including ethanol and water to form a first beer column bottom stream and a first beer column vaporous overhead stream. A beer column receives a second portion of the feed mixture. A first portion of the first beer column bottom stream is forwarded to a first beer column reboiler. A second portion of the first beer column bottom stream is forwarded to a plurality of evaporators. A condensed portion of the first beer column vaporous overhead stream is forwarded to a stripper column. The stripper column forms a feed stream, which is contacted with a separation system, thereby forming a permeate and a retentate. The permeate is forwarded directly to at least one selected from the first beer column and the stripper column.
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6.发明公开公开(公告)号：US20240316476A1
公开(公告)日：2024-09-26
申请号：US18736752
申请日：2024-06-07
发明人： Jin Ming ZHOU , Thiago Righi , Chenxu Shi , Stephan BLUM , Virginia Andrade
摘要： A distillation and dehydration system is provided that produces an anhydrous organic solvent. The provided system includes vapor recompression (e.g., a mechanical or thermal vapor recompression unit) to recover heat from a rectification-distillation section (e.g., a rectifier/stripper column). The addition of vapor recompression enables further heat recovery within a stream by increasing the condensation temperature and pressure of that stream and later using its latent heat by condensing it.
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7.发明申请公开(公告)号：US20230123549A1
公开(公告)日：2023-04-20
申请号：US17967144
申请日：2022-10-17
发明人： Jin Ming ZHOU , Thiago Righi , Chenxu Shi , Stephan BLUM , Virginia Andrade
摘要： A distillation and dehydration system is provided that produces an anhydrous organic solvent. The provided system includes vapor recompression (e.g., a mechanical or thermal vapor recompression unit) to recover heat from a rectification-distillation section (e.g., a rectifier/stripper column). The addition of vapor recompression enables further heat recovery within a stream by increasing the condensation temperature and pressure of that stream and later using its latent heat by condensing it.
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公开(公告)号：US10729987B1
公开(公告)日：2020-08-04
申请号：US15836558
申请日：2017-12-08
摘要： The present disclosure provides processes and systems for heat integration in ethanol production. In one embodiment, a feed mixture is distilled with one or more distillation units to remove at least a portion of the water, and form a distillation unit bottom stream, a vaporous overhead stream, and a fusel oil stream. Molecular sieve units are regenerated by vacuum or a combination of vacuum and optionally a portion of the product stream to form one or more regenerate streams. A feed tank is configured to receive at least one selected from a condensed portion of the regenerate streams and a portion of a vaporous depressure stream, to form a feed stream. The energy contained in the depressure vapor is recovered by the depressure vapor contacting the feed tank and heating up at least one stream forwarded into the feed tank.
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公开(公告)号：US12122738B2
公开(公告)日：2024-10-22
申请号：US18219470
申请日：2023-07-07
发明人： Virginia Andrade , Stephan Blum , Thiago Righi , Jin Ming Zhou
摘要： The present disclosure provides high-grade ethanol production systems and methods that increase energy efficiency as compared to typical systems and methods by minimizing undesired acetal formation. The provided ethanol production method may include a low boilers removal distillation column and/or a stripper column constructed to simultaneously remove at least a portion of the acetaldehyde and at least a portion of the acetal from a feed stream in the presence of water. In some aspects, a low boilers removal process may be followed by a water removal process, which may be followed by a high boilers removal process. Acidity (e.g., carbon dioxide) may also be removed from a feed stream prior to or during the low boilers removal process. By minimizing acetal production, the provided method minimizes the amount of energy that is required to remove acetal when producing high-grade ethanol.
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公开(公告)号：US12042750B2
公开(公告)日：2024-07-23
申请号：US17897853
申请日：2022-08-29
CPC分类号： B01D3/007 , B01D3/143 , B01D53/04 , C07C29/76 , C07C29/80 , B01D2253/108 , B01D2256/24 , B01D2257/80 , B01D2259/40083
摘要： The present disclosure provides processes and systems for heat integration in ethanol production. In one embodiment, a feed mixture is distilled with one or more distillation units to remove at least a portion of the water, and form a distillation unit bottom stream, a vaporous overhead stream, and a fusel oil stream. Molecular sieve units are regenerated by vacuum or a combination of vacuum and optionally a portion of the product stream to form one or more regenerate streams. A feed tank is configured to receive at least one selected from a condensed portion of the regenerate streams and a portion of a vaporous depressure stream, to form a feed stream. The energy contained in the depressure vapor is recovered by the depressure vapor contacting the feed tank and heating up at least one stream forwarded into the feed tank.
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