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Method for preparing biodiesel from sludge by microwave radiation

A technology of microwave radiation and biodiesel, applied in the field of environmental science, can solve the problems of increasing energy consumption and equipment investment, high viscosity, high content, etc., and achieve the effect of realizing resource utilization, low cost and solving technical problems

Inactive Publication Date: 2006-10-25
DALIAN UNIV OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the product oil obtained by traditional pyrolysis technology such as low-temperature pyrolysis technology has high nitrogen and oxygen content and high viscosity, so it is difficult to use as high-quality fuel oil without any post-processing
Moreover, the sludge needs to be dried before pyrolysis, which increases energy consumption and equipment investment.

Method used

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  • Method for preparing biodiesel from sludge by microwave radiation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Pre-dry municipal sludge such as activated sludge, digested sludge, industrial sludge such as paint sludge, paper sludge and oily sludge with hot air, add 2% carbon, and put them into a microwave pyrolysis reaction device. Set the power to 2000W, and irradiate at 600-700°C for 22min. Gas, liquid and solid products were obtained respectively, and their product yields are shown in Table 1.

[0018]

[0019] After testing and analysis, it is concluded that the pyrolysis oil obtained from municipal sludge is mainly aliphatic compounds, and the pyrolysis oil obtained from industrial sludge is mainly aromatic compounds with a single ring structure; the gas products are mainly CO and h 2 Mainly.

Embodiment 2

[0021]

[0022] After testing and analysis, it is concluded that the pyrolysis oil obtained from municipal sludge is mainly aliphatic compounds, and the pyrolysis oil obtained from industrial sludge is mainly aromatic compounds with a single ring structure; the gas products are mainly CO and h 2 Mainly, and contains a certain amount of hydrocarbon gas.

Embodiment 3

[0024] Pre-dry municipal sludge such as activated sludge, digested sludge, industrial sludge such as paint sludge, paper sludge and oily sludge with hot air, add 6% silicon carbide, and put them into a microwave pyrolysis reaction device . Set the power to 90kw, and irradiate at 600-700°C for 7 minutes. Gas, liquid and solid products were obtained respectively, and their product yields are shown in Table 3.

[0025]

[0026] After testing and analysis, it is concluded that the pyrolysis oil obtained from municipal sludge is mainly aliphatic compounds, and the pyrolysis oil obtained from industrial sludge is mainly aromatic compounds with a single ring structure; the gas products are mainly CO and h 2 Mainly.

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Abstract

The invention relates to a solid wastes sludge processing method, especially relates to microwave radiation sludge making biology diesel oil. The feature is that it directly sends the microwave energy to the sludge to take rapid pyrolysis to gain quality oil constituent that would be used as biology diesel oil. The invention has rapid speed, high efficiency, energy saving, and low cost.

Description

technical field [0001] The invention belongs to the field of environmental science and technology, and relates to a treatment method for solid waste sludge, in particular to a method for preparing biodiesel from microwave irradiated sludge. Background technique [0002] Sludge is a solid sediment produced during sewage treatment, containing a large amount of water, inorganic ash and organic volatiles. With the rapid development of social economy and urbanization, my country's urban sewage treatment capacity has been continuously enhanced, and the amount of sludge produced has increased sharply. If it is not properly disposed of, it will not only occupy a large amount of land, but also cause secondary pollution to the environment, becoming a major public hazard affecting urban environmental sanitation. How to scientifically and properly treat and dispose of sludge has become a key issue that must be solved for urban development. [0003] In the disposal and utilization meth...

Claims

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Application Information

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IPC IPC(8): C10G1/00C02F11/00
CPCY02E50/10
Inventor 王同华潭瑞淀潘艳秋贺新展
Owner DALIAN UNIV OF TECH
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