Fermentation / distillation integrated technique apparatus for producing alcohol from sugar

Abstract

The invention discloses an integral fuel-ethanol production process based on saccharide raw materials, and a device thereof, which belongs to the technical field of biomass liquid fuel production. The technical process comprises the following steps: grinding saccharide crops and allowing the ground saccharide crops to enter a device integrating solid-state fermentation, ethanol gas extraction and pneumatic dregs drying; mixing the ground material with high-yield ethanol yeast liquid and completing fermentation in anaerobic environment under the condition of transmitting strengthening heat mass; separating the ethanol through gas extraction; and drying dregs rotated in a tube body of a fermentor through gas flow and discharging the dregs out of the fermentor. The invention has the advantages of simplifying the process flow of producing the ethanol through solid fermentation, realizing high-degree technical integration, transforming fermentable sugar in the ground material to the utmost extent, efficiently extracting the ethanol in solid fermentation materials, utilizing flue gas and superheated steam (CO2 or heated dry air) to separate the ethanol, utilizing the flue gas (or the heated dry air) to dry the dregs, saving material-conveying time, reducing energy consumption and embodying that a solid fermentation method for producing fuel ethanol has the advantages of high net energy ratio and low environmental load.

Description

technical field [0001] The invention belongs to the technical field of biomass liquid fuel production, and in particular relates to an integrated process and device for producing fuel ethanol based on solid-state fermentation of sugar crops (sweet sorghum, sugar cane, sugar beet, Jerusalem artichoke, etc.), alcohol-slag stripping and slag airflow drying . Background technique [0002] It is internationally recognized that only biofuels can replace traditional fossil fuels on a large scale in the field of transportation. At this stage, the world's largest output of fuel ethanol is also the first choice for the development of biomass energy. Grain ethanol is not suitable for my country's national conditions, and the agricultural and forestry biomass resources that can replace grain to produce ethanol are very rich, with an annual reserve of 700 million tons. However, there are still technical bottlenecks in cellulosic ethanol conversion technology, and it is difficult to achi...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to fundamentally solve the problems of high energy consumption, long fermentation period, serious environmental pollution and the traditional solid-state fermentation process of high labor intensity in the liquid fermentation method of juicing pretreatment in the current production of fuel ethanol based on sugary crops. , low efficiency, difficulty in realizing mechanization and other defects, and provides an integrated process and device for solid-state fermentation, alcohol-residue air stripping and dross air-drying, which is characterized in that the process steps are as follows:

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