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Method for preparing organic fertilizer and biological liquid fuel by utilizing lignocellulose

A technology of lignocellulose and biological liquid, which is applied in the direction of organic fertilizers, biofuels, liquid carbon-containing fuels, etc., can solve the problems of complex production process of cellulosic ethanol, large water consumption, and high cost, so as to improve equipment utilization efficiency and reduce Water consumption, energy consumption, and overall cost reduction effect

Pending Publication Date: 2022-02-22
GUOTOU BIO TECH INVESTMENT CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for simultaneously producing biological liquid fuel and organic fertilizer by using lignocellulosic raw materials in order to solve the problems of complex cellulose ethanol production process in the prior art, high cost, large water consumption and heavy pollution. This method can transform the pollution source in the original ethanol production into high value-added fulvic acid fertilizer, and has the characteristics of short process flow, good economy and environmental friendliness.

Method used

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  • Method for preparing organic fertilizer and biological liquid fuel by utilizing lignocellulose
  • Method for preparing organic fertilizer and biological liquid fuel by utilizing lignocellulose
  • Method for preparing organic fertilizer and biological liquid fuel by utilizing lignocellulose

Examples

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Embodiment 1

[0090] The lignocellulosic raw material used in this example is corn stalks, and the sulfite used is sodium sulfite.

[0091] Step 1: In the pretreatment system, the concentration of corn stalks is 20% by weight, the concentration of sodium sulfite is 2% by weight, and the balance is water, mix well, heat and cook after sealing, heat up to 165°C, and maintain at this temperature for 90 minutes ;

[0092] Step 2: After cooking, water and cellulase are added to the material for enzymatic hydrolysis to produce sugar. Wherein, in the enzymatic hydrolysis sugar production system, the concentration of cellulase is 1% by weight, and the concentration of insoluble substrate is 10% by weight. pH is 5, enzymatic hydrolysis at 50°C for 72 hours;

[0093] Step 3: After the enzymatic hydrolysis, inoculate the C5 strain in the sugar solution with an inoculation amount of 3 g / L. Adjust the pH to 5.5, and ferment at 32°C for 72 hours;

[0094] Step 4: Distill the fermented mature mash, di...

Embodiment 2

[0103] The lignocellulosic raw material selected in this embodiment is corn stalks, and the selected sulfite is ammonium sulfite.

[0104] Step 1: In the pretreatment system, the concentration of corn stalks is 20% by weight, the concentration of ammonium sulfite is 2% by weight, fully mixed, sealed and heated to steam explosion, the temperature is raised to 185°C, the pressure is 1.12MPa, and maintained at this temperature 60 minutes;

[0105] Step 2: After steam explosion, water and cellulase are added to the material for enzymatic hydrolysis to produce sugar. Wherein, in the enzymatic hydrolysis sugar production system, the concentration of the enzyme preparation is 1.5% by weight, the concentration of the insoluble substrate is 10% by weight, the pH is 5, and the enzymolysis is carried out at 50°C for 72 hours;

[0106] Step 3: After the enzymatic hydrolysis, inoculate the C5 strain in the sugar solution with an inoculation amount of 3 g / L. Adjust the pH to 5.5 and ferme...

Embodiment 3

[0115] The lignocellulosic raw material selected in this embodiment is corn stalks, the selected sulfite is ammonium sulfite, and the selected alkali is sodium hydroxide.

[0116] Step 1: In the pretreatment system, the concentration of corn stalks is 20% by weight, the concentration of ammonium sulfite is 2% by weight, and the concentration of sodium hydroxide is 3% by weight. Among them, ammonium sulfite and sodium hydroxide are added at the same time, pretreated by cooking, fully mixed, heated and cooked after sealing, the temperature is raised to 185 ° C, and maintained at this temperature for 90 minutes;

[0117] Step 2: After cooking, water and cellulase preparation are added to the material for enzymatic hydrolysis to produce sugar. Wherein, in the enzymatic sugar production system, the concentration of the enzyme preparation is 0.5% by weight, the concentration of the insoluble substrate is 10% by weight, the pH is 5, and the enzyme is hydrolyzed at 50°C for 72 hours; ...

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Abstract

The invention relates to the field of production of organic fertilizers and biological liquid fuels, in particular to a method for preparing an organic fertilizer and a biological liquid fuel by utilizing lignocellulose. The method provided by the invention comprises the following steps: 1, mixing a lignocellulose raw material with sulfite and / or hydrosulfite, and heating for pretreatment; 2, mixing the pretreated material with cellulase, and carrying out enzymatic hydrolysis to produce sugar so as to obtain a sugar solution; 3, inoculating strains into the sugar liquid for biological liquid fuel fermentation to obtain fermented mature mash; 4, distilling the fermented mature mash to obtain biological liquid fuel and waste mash; and 5, carrying out solid-liquid separation on the waste mash to obtain a clear liquid and wet grains, and respectively obtaining an organic fertilizer A and an organic fertilizer B from the clear liquid and the wet grains. When the method provided by the invention is used for producing the organic fertilizer and the biological liquid fuel, the economical efficiency and the environmental protection property in the production process are improved.

Description

technical field [0001] The invention relates to the fields of organic fertilizer and biological liquid fuel production, in particular to a method for preparing organic fertilizer and biological liquid fuel by utilizing lignocellulose. Background technique [0002] With the development of society and economy, people's living standards are gradually improving, the number of cars is increasing year by year, and the demand for car fuel is also increasing. Due to the limited reserves, non-renewable and serious environmental pollution of traditional petroleum fuels, it is imminent to develop sustainable and clean energy. Fuel ethanol is the most widely used low-carbon clean liquid fuel in recent years. Its raw materials are renewable and easy to obtain. It contains internal oxygen and has a high octane number. It can be added to gasoline as an oxygen enhancer and octane number improver to help gasoline Full combustion, significantly reducing pollutant emissions, great potential f...

Claims

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Application Information

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IPC IPC(8): C12P7/10C12P19/14C05G1/00C05F17/20C05G5/20C10L1/02
CPCC12P7/10C12P19/14C05D9/00C05F17/20C05G5/20C10L1/02C12P2201/00C10L2290/26C05F11/00C05F11/08Y02E50/10Y02W30/40
Inventor 林海龙张宏嘉熊强武国庆刘劲松李冬敏沈乃东魏妮樊冰洁
Owner GUOTOU BIO TECH INVESTMENT CO LTD
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