Device and method for preparing coupled and rectified ethanol by furfural
A technology of ethanol rectification and furfural, applied in separation methods, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve few problems, achieve the effects of saving equipment costs, improving economy, and avoiding side reactions
Inactive Publication Date: 2015-07-15
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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For this reason, the integration of rectification and conversion reactions and the development of low-energy and high-yield processes have dual significance for balancing and optimizing the energy consumption and economics of fuel ethanol processes, but currently there are few processes that integrate alcohol purification and waste conversion
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[0030] The following is a further description of the present invention, rather than a limitation of the present invention.
[0031] A device for furfural preparation coupling ethanol rectification, such as figure 1 As shown, it includes sequentially connected catalytic rectification tower T1, aldol refining tower T2 and aldol separation tower T3, and the catalytic rectification tower T1 is used for catalytic pretreatment of pentose components in sugar liquid A and fermentation mash B Prepare furfural by reaction and initially extract rectification ethanol; the aldol refining tower T2 is used for rectification and dehydration of furfural and ethanol to purify furfural and ethanol; the aldol separation tower T3 is used for separating furfural and ethanol;
[0032] The catalytic rectification tower T1 is divided into a rectification section 101, a catalytic reaction section 102 and a stripping section 103 from top to bottom; the catalytic rectification tower T1 catalytic reaction...
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The invention discloses a device and a method for preparing coupled and rectified ethanol preparation by furfural. The device comprises a catalytic rectifying tower (T1), an alcohol-aldehyde refining tower (T2) and an alcohol-aldehyde separation tower (T3), wherein the catalytic rectifying tower (T1) is used for catalyzing glucose liquid for pre-treatment and glucose component reaction in a fermented liquor to prepare the furfural and preliminarily extracting and rectifying ethanol; the alcohol-aldehyde refining tower (T2) is used for rectifying and dehydrating of furfural and ethanol; the alcohol-aldehyde separation tower (T3) is used for separating furfural from ethanol. According to the device, the technique that solid acid is used for catalyzing glucose liquid pre-treatment reaction to rectify the furfural and absolute ethanol is extracted and rectified from the coupled fermented liquor is adopted; the furfural is efficiently prepared, the dehydration energy consumption of ethanol is effectively reduced and the device has remarkable practicality and economic benefit.
Description
Technical field: [0001] The invention relates to the technical field of biomass energy conversion and utilization, in particular to a device and method for preparing furfural coupled with ethanol rectification. Background technique: [0002] The preparation of fuel ethanol by hydrolysis and fermentation of lignocellulosic biomass is an important branch of biomass energy utilization research, which is of great significance to the development of energy substitution in my country, the maintenance of energy security, and the reduction of environmental pollution. However, huge energy consumption and low economy restrict the development of fuel ethanol industry, and the development of low energy consumption and high output process has become the key to promote its development. The current conventional process for producing fuel ethanol using lignocellulosic biomass resources mainly includes pretreatment, enzymatic fermentation, alcohol purification, and high-value waste conversion...
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IPC IPC(8): B01D3/00B01D3/14B01D3/40B01J19/00C07C31/08C07C29/80C07D307/48
CPCY02P20/10
Inventor 袁振宏谭雪松庄新姝王琼亓伟余强
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI