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A method for producing fuel ethanol from household garbage

A technology for fuel ethanol and domestic waste, applied in the direction of microorganism-based methods, biofuels, biochemical equipment and methods, etc., can solve the problems of unfavorable production of fuel ethanol, poor batch stability, complex components, etc., to improve the value of raw materials, Improve efficiency and improve the effect of conversion rate

Active Publication Date: 2019-08-30
厦门庚能新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the composition of domestic waste is complex, and the stability between batches is poor. In particular, there are many components harmful to enzymes, such as more heavy metal ions, some small molecular organic substances, and more microorganisms, which are very important for the production of fuel ethanol. It is extremely unfavorable and must be adjusted and improved in the conventional hydrolysis reaction process in order to finally adapt to

Method used

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  • A method for producing fuel ethanol from household garbage

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Step 1: Inactivation treatment

[0064] The fibrous garbage after household waste classification is inactivated by high-temperature steam. During the high-temperature steam treatment, the steam temperature is 120°C and the treatment time is 10 minutes to ensure that the eggs and microorganisms are inactivated; during the inactivation process, at the same time Add acid for treatment to effectively degrade cellulose macromolecules and improve the efficiency of post-hydrolysis. The acid is formic acid; the concentration of the acid is controlled at 1.0%. 10% of the dry weight of fibrous waste;

[0065] Step 2 Preprocessing

[0066] Step 2.1 Collect

[0067] Collect the fibrous waste after the high-temperature steam inactivation treatment in step 1, as the raw material for the next step hydrolysis reaction;

[0068] Step 2.2 Preprocessing the first step

[0069] Add EDTA solution to the fibrous garbage after high-temperature steam inactivation treatment, the concentrati...

Embodiment 2

[0084] Step 1: Inactivation treatment

[0085] The fibrous garbage after the domestic waste classification is inactivated by high-temperature steam. The steam temperature during the high-temperature steam treatment process is 125°C, and the treatment time is 120 minutes to ensure that the eggs and microorganisms are inactivated; during the inactivation process, at the same time Add acid for treatment to effectively degrade cellulose macromolecules and improve the efficiency of post-hydrolysis. The acid is sulfuric acid; the concentration of the acid is controlled at 10%. 0.1% of the dry weight of garbage.

[0086] Step 2 Preprocessing

[0087] Step 2.1 Collect

[0088] Collect the fibrous waste after the high-temperature steam inactivation treatment in step 1, as the raw material for the next step hydrolysis reaction;

[0089] Step 2.2 Preprocessing the first step

[0090] Add EDTA solution to the fibrous garbage after high-temperature steam inactivation treatment, the con...

Embodiment 3

[0105] Step 1: Inactivation treatment

[0106] The fibrous garbage after household waste classification is inactivated by high-temperature steam. During the high-temperature steam treatment, the steam temperature is 130°C and the treatment time is 10 minutes to ensure the inactivation of insect eggs and microorganisms; during the inactivation process, at the same time Adding acid for treatment can effectively degrade cellulose macromolecules and improve the efficiency of hydrolysis in the later stage. The acid is hydrochloric acid; the concentration of the acid is controlled at 5.0%. 1.0% of the dry weight of garbage.

[0107] Step 2 Preprocessing

[0108] Step 2.1 Collect

[0109] Collect the fibrous waste after the high-temperature steam inactivation treatment in step 1, as the raw material for the next step hydrolysis reaction;

[0110] Step 2.2 Preprocessing the first step

[0111] Add EDTA solution to the fibrous garbage after high-temperature steam inactivation treat...

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Abstract

The invention discloses a method for producing fuel ethanol from household garbage. The method includes inactivating fiber garbage by high-temperature steam, adding an EDTA solution into the inactivated fiber garbage, and adding strong base into a solid component obtained after solid-liquid separation so as to obtain a mixer; adding water into the mixture to form a mixed solution and regulating a pH value of the mixed solution to 6-8; subjecting the mixed solution to solid-liquid separation in hydrolysis reaction, adding a solid component obtained after solid-liquid separation into a buffer solution in batches until a solid-liquid ratio of the solid-liquid mixture is 1:4-1:3, and adding cellulase and penicillin into the buffer solution; fermenting a liquid component in a hydrolyzed solid-liquid mixture so as to form fermentation liquor, and distilling to obtain the ethanol from the fermentation liquor. The method for producing the fuel ethanol from the household garbage overcomes complexity and poor stability of ingredients in household garbage raw materials, thereby turning waste into wealth.

Description

technical field [0001] The invention relates to a production method of cellulose fuel ethanol, the main raw material of which is municipal domestic garbage, which belongs to the field of new materials and new energy sources. Background technique [0002] In the traditional solid waste disposal process, direct incineration of domestic waste is a common method, but the possible air pollution caused by this has attracted the attention of many people. Therefore, in recent years, the technology of classified and comprehensive utilization of solid waste has been gradually applied. [0003] In domestic waste, in addition to perishable kitchen waste, there are four main types of waste: plastics, metals, cellulose residues and inorganic oxides, which are not easy to degrade and need to be sorted. Among them, the cellulose residue mainly comes from the paper used by residents and the leaves in the city. After sorting, these wastes do not have much use, and are usually burned as power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P19/14C12P19/02C12P7/10C12R1/865
CPCC12P7/10C12P19/02C12P19/14C12P2201/00Y02E50/10
Inventor 危岩孙亚飞于伟娜叶培荣
Owner 厦门庚能新材料技术有限公司
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