High efficient treatment method of alcoholic fermentation waste liquor and device thereof

A treatment method and technology of alcohol waste liquid, which is applied in the production of hydrogen, etc., can solve the problems of high water content, unpleasant smell, and high heat consumption of alcohol waste liquid, and achieve the goals of shortening the processing cycle, saving resources, and low energy consumption Effect

Active Publication Date: 2009-09-23
EAST CHINA UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the alcohol waste liquid produced in the industry has a large water content, and the above-mentioned treatment method needs to remove a large amount of water in advance.
And removing moisture needs to consume a large amount of heat energy, and it is easy to produce unpleasant smell, more importantly, these methods can only handle a limited amount of alcohol waste liquid

Method used

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  • High efficient treatment method of alcoholic fermentation waste liquor and device thereof
  • High efficient treatment method of alcoholic fermentation waste liquor and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] use figure 1 process and figure 2 The entrained entrained gasifier 5, wherein the nozzle 506 is provided with three channels.

[0025] The waste liquid with a water content of 96% (weight) discharged from the bottom of the crude distillation tower of a cassava fermentation ethanol plant is collected and enters the ball mill 1 with a flow rate of 5.81t / h through pumps and pipelines; at the same time, the particle size is less than 10mm and the water content is 7.00%. (weight), ash content of 5.35% (weight), ash melting point of 1179 ° C, carbon content of 78.35% (weight, dry basis), hydrogen content of 4.75% (weight, dry basis) of coal with a flow rate of 50.00t / h, The flow rate of fresh water is 18.64t / h, and additive is sent into the ball mill 1 with the flow rate of 0.47t / h. Cassava alcohol waste liquid, coal, water and a small amount of additives are ground and uniformly mixed in ball mill 1, and finally form solid particle particle diameter after vibrating screen...

Embodiment 2

[0027] Adopt the flow process identical with embodiment 1, the waste liquid of the water content 96% (weight) that alcohol waste liquor adopts the crude distillation column bottom discharge of certain cassava fermentation ethanol plant, flow rate is 1.13t / h; The water content of coal 10.00% ( weight), ash content 10.36% (weight), ash melting point 1243°C, carbon element content 71.18% (weight, dry basis), hydrogen element content 6.17% (weight, dry basis), flow rate 10.00t / h; fresh water flow rate is 2.84t / h, and the additive flow rate is 0.09t / h.

[0028] The cassava alcohol waste liquid coal slurry has a solid content of 65% (weight) and an apparent viscosity of 1050mPa.s.

[0029] The gasification agent is oxygen-enriched air (50% oxygen content), the pressure of the gasifier is 0.1MPa, and the temperature is 1306°C.

[0030] The dry basis composition of the obtained gas is (volume): 28.63% H 2 , 34.71% CO, 13.17% CO 2 , 28.63% N 2 , 0.13% H 2 S, 0.01% COS. The lower ...

Embodiment 3

[0032] Adopt the flow process identical with embodiment 1, the waste liquid of the water content 92% (weight) that alcohol waste liquid adopts the water content 92% (weight) discharge of some corn fermentation alcohol plant crude distillation tower bottom, flow rate is 3.56t / h; The water content of coal 5.00% ( weight), ash content 7.88% (weight), ash melting point 1218°C, carbon element content 73.84% (weight, dry basis), hydrogen element content 4.26% (weight, dry basis), flow rate is 30.00t / h; fresh water flow rate It is 14.61t / h, and the additive flow rate is 0.28t / h.

[0033] The solid content of the corn alcohol waste liquid coal slurry is 60% (weight), and the apparent viscosity is 980mPa.s.

[0034] The gasification agent is oxygen-enriched air (oxygen content 80%), the pressure of the gasifier is 3.0MPa, and the temperature is 1279°C.

[0035] The dry basis composition of the obtained gas is (volume): 30.54% H 2 , 45.82% CO, 15.76% CO 2 , 7.72% N 2 , 0.14% H 2 S,...

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Abstract

The invention discloses a high efficient treatment method of alcoholic fermentation waste liquor and a device thereof. The method mainly comprises the steps as follows: 1. respectively sending alcohol waste liquor, coal, water and additive into a ball mill for mixing and grinding to prepare alcohol waste liquor coal pulp; and 2. sending the alcohol waste liquor coal pulp and a gasifying agent into a gasifying furnace through different channels of the gasifying nozzle of the entrained flow to be reacted under the pressure of 0.01-8.7Pa and at the temperature of 1,200-1,700 DEG C to generate coal gas, the main component (volume) of the dry basis thereof is 20-60% of CO, 1-25% of CO2, 10-50% of H2, 0.1-30% of N2, 0.0-1.0% of CH4, 0.0-3.0% of H2S and 0.0-0.5% of COS. The entrained flow used in the method has the characteristics of high efficient gasification and high performance, and the method is simple in implementation and low in energy consumption, has no contamination basically, and greatly shortens the treatment cycle of alcohol waste liquor, thus realizing minimized, stabilized, decontaminated, scaled and resourced utilization of alcohol waste liquor.

Description

technical field [0001] The present invention relates to a high-efficiency treatment method and device for alcoholic fermentation waste liquid, in particular, it is a kind of fermentation waste liquid which uses molasses, sorghum, potatoes, wheat, corn etc. as raw materials to produce alcohol together with coal pulping entrained bed A method and device for producing synthesis gas by gasification. Background technique [0002] Alcohol is widely used in chemical, food, medical and health fields, and can be used as alcohol base, extractant, detergent, solvent, surfactant, etc. In my country, the raw materials for alcohol production are mainly grains (corn, dried potatoes), and about 13-16 tons of alcohol waste liquid is discharged for every ton of alcohol produced according to the different raw materials. Alcohol waste liquid is a high-concentration organic wastewater with a water content of more than 90%, high acidity, high viscosity, and a COD content of up to 60,000 mg / L. I...

Claims

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Application Information

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IPC IPC(8): C01B3/02
Inventor 陈雪莉邵守言刘海峰凌晨王辅臣李兴龙于广锁曹宏兵龚欣王忠华王亦飞周志杰代正华
Owner EAST CHINA UNIV OF SCI & TECH
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