Method for preparing fuel ethanol from kitchen waste

A technology for kitchen waste and fuel ethanol, which is applied in the directions of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of imperfect ethanol fermentation and distillation processes, inability to achieve sustainable development, and high moisture content of kitchen waste. problems, to achieve the effect of saving cooking process, high starch content and high activity

Active Publication Date: 2019-06-21
广州市广环环保科技有限公司
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Problems solved by technology

[0002] Energy is the basic driving force for economic and social development. In the past 50 years, although the application of coal, oil and natural gas has greatly promoted the development of the world economy and the progress of human society, these fossil energy sources are not renewable and cannot achieve sustainable development. Calculating based on proven reserves and mining speed, the global oil supply can only last for nearly 50 years, natural gas for less than 100 years, and coal for less than 200 years
The production of fuel ethanol as one of the specific applications of energy treatment has rapidly emerged in recent years. However, due to the high moisture content of kitchen waste, the fermentation and distillation processes of ethanol are not perfect, resulting in low resource utilization. , high investment costs, etc.

Method used

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  • Method for preparing fuel ethanol from kitchen waste
  • Method for preparing fuel ethanol from kitchen waste
  • Method for preparing fuel ethanol from kitchen waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Experimental setting method: In this example, the yeast strains and inoculation amount used as mash fermentation are used as variables, and several treatment groups in the facility carry out a series of processing treatments on food waste to prepare ethanol, so as to explore the impact of the above variables on mash The effect of ethanol content in the fermented broth obtained by fermentation.

[0033] Main strains: Saccharomyces cerevisiae Rasse II, Saccharomyces cerevisiae K, Saccharomyces cerevisiae Hakken No.1.

[0034] Main instruments: WHL-65B vertical drying oven: Beijing Zhongxing Weiye Instrument Co., Ltd.; 0.40mm hole sieve: Shaoxing Shangyu Daoxu Yanguang Instrument Equipment Factory; GC-7890 gas chromatograph: Shanghai Chuanhao Instrument Co., Ltd.; BS- 2F shaking incubator: Jintan District Shuibei Science Popularization Experimental Instrument Factory; DH-360 electric heating constant temperature incubator: Beijing Zhongxing Weiye Instrument Co., Ltd.

[0...

Embodiment 2

[0060] Experiment setup method: In this example, the material-to-water ratio, slurry pH value, and saccharification temperature of starchy waste in the past were used as variables, and several treatment groups were used to process food waste to prepare ethanol in order to explore the above-mentioned processing. Effect of process parameter variables on ethanol content of fermentation broth obtained from mash fermentation.

[0061] Main instruments: WHL-65B vertical drying oven: Beijing Zhongxing Weiye Instrument Co., Ltd.; 0.40mm hole sieve: Shaoxing Shangyu Daoxu Yanguang Instrument Equipment Factory; GC-7890 gas chromatograph: Shanghai Chuanhao Instrument Co., Ltd.; BS- 2F shaking incubator: Jintan District Shuibei Science Popularization Experimental Instrument Factory; DH-360 electric heating constant temperature incubator: Beijing Zhongxing Weiye Instrument Co., Ltd.

[0062] Test index: ethanol content of the fermented liquid obtained after mash fermentation.

[0063] 1. ...

Embodiment 3

[0094] 1. Experiment setup method

[0095] In this example, the composition of the entrainer is used as a variable, and several treatment groups are installed to prepare and extract ethanol from food waste in a series of treatments, so as to explore the influence of the composition of the entrainer on the purity of ethanol. The composition of the entrainer corresponding to each treatment group in this embodiment is shown in Table 2. Except for the variables listed in Table 2, all corresponding technical points of each treatment group are strictly consistent. The ratios listed in Table 2 are the molar ratios of the components constituting the entrainer. In this embodiment, a control group is set, and no entrainer is used in the distillation process of the control group.

[0096] The concrete composition of the entrainer that each processing group adopts in the present embodiment of table 2

[0097]

[0098] 2. Main instruments

[0099]WHL-65B vertical drying oven: Beijing...

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Abstract

The invention discloses a method for preparing fuel ethanol from kitchen waste. The method includes the steps of (1) subjecting the kitchen waste to solid-liquid separation, and sorting starch waste from the obtained solid-phase kitchen waste; (2) adding water into the starch waste according to a material-water ratio of (2.8-3.4):1, and pulping; (3) heating the pulp at 75-110 DEG C for 30-60 minutes and cooling the pulp to the temperature below 60 DEG C; (4) regulating a pH value of the pulp to 4-5, adding glucoamylase to make the pulp saccharify at 58-60 DEG C for 15-60 minutes, filtering andkeeping filtrate; (5) inoculating the filtrate by composite Saccharomyces cerevisiae and carrying out anaerobic fermentation at 30-37 DEG C for 36-72 hours, wherein the inoculation amount of the composite Saccharomyces cerevisiae is 8-12%wt, and the composite Saccharomyces cerevisiae consists of Saccharomyces cerevisiae RasseII+ Saccharomyces cerevisiae K + Saccharomyces cerevisiae Hakken No.1; (6) sequentially carrying out secondary distillation by a crude distillation tower and a rectifying tower so as to obtain the fuel ethanol. The method for preparing the fuel ethanol from the kitchen waste can turn the starch waste from the kitchen waste into the ethanol efficiently, and the prepared ethanol has high purity.

Description

technical field [0001] The invention belongs to the technical field of kitchen waste resource treatment, and in particular relates to a method for preparing fuel ethanol from kitchen waste. Background technique [0002] Energy is the basic driving force for economic and social development. In the past 50 years, although the application of coal, oil and natural gas has greatly promoted the development of the world economy and the progress of human society, these fossil energy sources are not renewable and cannot achieve sustainable development. Based on the proven reserves and mining speed, the global oil supply can only last for nearly 50 years, natural gas for less than 100 years, and coal for less than 200 years. In other words, the fossil energy resources on the earth will be exhausted in the near future, and global energy security is facing severe challenges. At the same time, the use of fossil energy has an increasingly serious impact on environmental pollution and glo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/08C12P19/14C12R1/865
Inventor 彭钧雄简静仪
Owner 广州市广环环保科技有限公司
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