A kind of fuel ethanol production method based on high-quality ddgs product

Abstract

The invention belongs to the technical field of biomass energy production, and discloses a fuel ethanol production method based on high-quality DDGS products. unit, the solid phase is recovered, and DDGS products are produced; the top steam of the second refining tower is heated and pressurized by the compressor, and the vapor-liquid equilibrium temperature of the obtained pressurized reflux steam of the second refining tower is higher than the operating temperature of the crude tower tower kettle, and is used as a heating element. The medium is sent to the reboiler of the coarse tower; the top steam of the second purification tower is heated and pressurized by the compressor, and the pressurized adsorption steam of the second purification tower is superheated steam, which does not need preheating operation, and is directly sent to the adsorber A or adsorption unit of the adsorption unit. Device B performs adsorption dehydration operation to obtain fuel ethanol product. This technical solution solves the problems faced by the current mainstream production process of fuel ethanol, such as fermentation mash, waste mash and other solid-containing materials with high heating temperature, reboilers and trays and other equipment are prone to scarring, production is unstable, and affects the quality of DDGS products and other industries. problem.

Description

technical field

[0001] The invention belongs to the technical field of biomass energy production, and in particular relates to a method for producing fuel ethanol based on high-quality DDGS products. Using raw materials such as corn, wheat, rice, cassava, sorghum and sweet potato, the production process includes production units such as mash preparation, rectification, adsorption dehydration and waste mash treatment. The disclosed technical solution is aimed at the multi-stage thermally coupled rectification process used in the refining process of the current mainstream production process of fuel ethanol, which causes the solid materials such as waste mash and other solid-containing materials to be heated at a relatively high temperature, and the reboiler and the tray of the rectification production device are easy to condense. Scar, unstable production, the color of DDGS products produced by the subsequent waste mash recovery solid phase becomes black, which affects the quali...

Examples

Embodiment 1

[0127] Using wheat as raw material to produce fuel ethanol products and DDGS products, the production process mainly includes mash preparation unit, rectification unit, adsorption dehydration unit and waste mash treatment unit. For the operation process, see figure 1 - Flow chart of mash preparation unit, figure 2 - Rectification unit flow chart, image 3 -Flow chart of adsorption dehydration unit, Figure 4 - Flow chart of spent mash treatment unit, and figure 1 , figure 2 , image 3 and Figure 4 The marking numbers and names of the equipment involved in . The production implementation is described as follows:

[0128] 1. Mash preparation unit

[0129] Prepare slurries. The wheat raw material F101 is sent to the pulverizer E11 for pulverization, the pulverized material F102 is sent to the mixer E12, and the preheated mixing water F111, the liquefaction enzyme F112 and the nutrient salt ammonia water F113 are added at the same time, and the powder slurry F103 is obt...

Embodiment 2

[0156] Using rice and cassava mixed raw materials to produce fuel ethanol products and DDGS products, the production process mainly includes mash preparation unit, rectification unit, adsorption dehydration unit and waste mash treatment unit. For the operation process, see figure 1 - Flow chart of mash preparation unit, figure 2 - Rectification unit flow chart, image 3 -Flow chart of adsorption dehydration unit, Figure 4 - Flow chart of spent mash treatment unit, and figure 1 , figure 2 , image 3 and Figure 4 The marking numbers and names of the equipment involved in . The production implementation is described as follows:

[0157] 1. Mash preparation unit

[0158] Prepare slurries. The mixed raw material F101 of rice and cassava is sent to the pulverizer E11 to be pulverized, the pulverized material F102 is sent to the mixer E12, and the preheated mixing water F111, the liquefaction enzyme F112 and the nutrient salt ammonia water F113 are added at the same time,...

Embodiment 3

[0186] Using corn as raw material to produce fuel ethanol products and DDGS products, the production process mainly includes mash preparation unit, rectification unit, adsorption dehydration unit and waste mash treatment unit. figure 1 - Flow chart of mash preparation unit, figure 2 - Rectification unit flow chart, image 3 -Flow chart of adsorption dehydration unit, Figure 4 - Flow chart of spent mash treatment unit, and figure 1 , figure 2 , image 3 and Figure 4 The marking numbers and names of the equipment involved in . The production implementation is described as follows:

[0187] 1. Mash preparation unit

[0188] Prepare slurries. The corn raw material F101 is sent to the pulverizer E11 for pulverization, the pulverized material F102 is sent to the mixer E12, and the preheated mixing water F111, the liquefaction enzyme F112 and the nutrient salt ammonia water F113 are added at the same time, and the slurry F103 is obtained and sent to the mixing tank E13, ...

technical field

[0001] The invention belongs to the technical field of biomass energy production, and in particular relates to a method for producing fuel ethanol based on high-quality DDGS products. Using raw materials such as corn, wheat, rice, cassava, sorghum and sweet potato, the production process includes production units such as mash preparation, rectification, adsorption dehydration and waste mash treatment. The disclosed technical solution is aimed at the multi-stage thermally coupled rectification process used in the refining process of the current mainstream production process of fuel ethanol, which causes the solid materials such as waste mash and other solid-containing materials to be heated at a relatively high temperature, and the reboiler and the tray of the rectification production device are easy to condense. Scar, unstable production, the color of DDGS products produced by the subsequent waste mash recovery solid phase becomes black, which affects the quali...

Examples

Embodiment 1

[0127] Using wheat as raw material to produce fuel ethanol products and DDGS products, the production process mainly includes mash preparation unit, rectification unit, adsorption dehydration unit and waste mash treatment unit. For the operation process, see figure 1 - Flow chart of mash preparation unit, figure 2 - Rectification unit flow chart, image 3 -Flow chart of adsorption dehydration unit, Figure 4 - Flow chart of spent mash treatment unit, and figure 1 , figure 2 , image 3 and Figure 4 The marking numbers and names of the equipment involved in . The production implementation is described as follows:

[0128] 1. Mash preparation unit

[0129] Prepare slurries. The wheat raw material F101 is sent to the pulverizer E11 for pulverization, the pulverized material F102 is sent to the mixer E12, and the preheated mixing water F111, the liquefaction enzyme F112 and the nutrient salt ammonia water F113 are added at the same time, and the powder slurry F103 is obt...

Embodiment 2

[0156] Using rice and cassava mixed raw materials to produce fuel ethanol products and DDGS products, the production process mainly includes mash preparation unit, rectification unit, adsorption dehydration unit and waste mash treatment unit. For the operation process, see figure 1 - Flow chart of mash preparation unit, figure 2 - Rectification unit flow chart, image 3 -Flow chart of adsorption dehydration unit, Figure 4 - Flow chart of spent mash treatment unit, and figure 1 , figure 2 , image 3 and Figure 4 The marking numbers and names of the equipment involved in . The production implementation is described as follows:

[0157] 1. Mash preparation unit

[0158] Prepare slurries. The mixed raw material F101 of rice and cassava is sent to the pulverizer E11 to be pulverized, the pulverized material F102 is sent to the mixer E12, and the preheated mixing water F111, the liquefaction enzyme F112 and the nutrient salt ammonia water F113 are added at the same time,...

Embodiment 3

[0186] Using corn as raw material to produce fuel ethanol products and DDGS products, the production process mainly includes mash preparation unit, rectification unit, adsorption dehydration unit and waste mash treatment unit. figure 1 - Flow chart of mash preparation unit, figure 2 - Rectification unit flow chart, image 3 -Flow chart of adsorption dehydration unit, Figure 4 - Flow chart of spent mash treatment unit, and figure 1 , figure 2 , image 3 and Figure 4 The marking numbers and names of the equipment involved in . The production implementation is described as follows:

[0187] 1. Mash preparation unit

[0188] Prepare slurries. The corn raw material F101 is sent to the pulverizer E11 for pulverization, the pulverized material F102 is sent to the mixer E12, and the preheated mixing water F111, the liquefaction enzyme F112 and the nutrient salt ammonia water F113 are added at the same time, and the slurry F103 is obtained and sent to the mixing tank E13, ...

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