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Method for using plants to control and restore soil and to generate biological fuel

A technology for soil remediation and biofuels, which is applied in the restoration of biofuels, polluted soils, and the preparation of liquid hydrocarbon mixtures.

Active Publication Date: 2013-11-20
ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have certain application prospects, they are relatively single, and there are problems such as long time-consuming and low economic benefits.

Method used

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  • Method for using plants to control and restore soil and to generate biological fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Planting: planting bamboo on the soil of the polluted cadmium ore metal mining area; planting by transplanting. Plant according to the general planting method of bamboo.

[0020] Plant Harvesting: Harvesting is carried out by mechanized method after 3-5 years of transplanting.

[0021] Post Harvest Plant Treatment:

[0022] The harvested bamboo is cut into long sections of 0.5-1.0m, put into a fixed-bed pyrolysis furnace, and pyrolyzed at 400-600°C for 1-6h to obtain biochar and pyrolysis oil. The pyrolysis oil is passed through indirect heat exchange The pyrolysis oil is collected by cooling, and the pyrolysis oil is further catalytically hydrogenated to obtain biofuel oil. The yield of bio-oil can reach 40-70% of the mass of the original material. Catalytic hydrogenation steps and conditions: Take 200ml of pyrolysis oil and put it into a pressurized container tank with a volume of 500ml with stirring and water cooling functions, and add 5-10g of Co-Mo-P catalyst and...

Embodiment 2

[0025] Planting: planting sugarcane on the soil of the polluted tungsten ore metal mining area; planting by transplanting. Cultivation is carried out according to the general cultivation method of sugarcane.

[0026] Plant Harvesting: Harvesting is carried out by mechanized method 1 year after transplanting.

[0027] Post Harvest Plant Treatment:

[0028] The harvested sugarcane is cut into 0.5-1.0m long sections, placed in a fixed-bed pyrolysis furnace, and pyrolyzed at 400-600°C for 1-6 hours to obtain biochar and pyrolysis oil. The pyrolysis oil is passed through indirect heat exchange The pyrolysis oil is collected by cooling, and the pyrolysis oil is further catalytically hydrogenated to obtain biofuel oil. The yield of bio-oil can reach 40-70% of the mass of the original material. Catalytic hydrogenation steps and conditions: Take 200ml of pyrolysis oil and put it into a pressurized container tank with a volume of 500ml with stirring and water cooling functions, and ad...

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Abstract

The invention provides a method for using plants to control and restore soil and to generate a biological fuel. The method comprises: planting fast-growing economic crops abundant in cellulose and lignin in polluted metal mine soil, wherein the crops are capable of absorbing and gathering heavy metals in the soil in the rapid growth process; after harvesting, moving away the economic crops, employing technologies such as thermochemistry, catalytic transformation and the like to transfer the economic crops into a biological ethanol fuel; at the same time extracting the heavy metals absorbed and gathered by the crops for separate treatment; and performing pyrolysis and charring on the residual solid residue to form biological charcoal for recycling in the mine soil and absorption of heavy metals and organic pollutants in the soil so as to gradually make the polluted soil restored and improved. The method of the invention helps to substantially reduce soil restoration cost, and reaches the purposes of cascade utilization, cyclic utilization and ecological environment protection.

Description

technical field [0001] The invention relates to the fields of soil repair and biofuel, in particular to a method for using plants to control and restore soil and produce biofuel. Background technique [0002] With the decrease of fossil energy resources and the world's increasingly strong demand for energy, the development of renewable energy, such as biomass energy, has become the only way for the present and the next few decades. It is predicted that the global biomass production will double in the next ten years. By 2022, the EU will still be the world's leading producer and consumer of biodiesel, and the proportion of biodiesel will account for 45% of that of the EU, and the proportion of fuel ethanol will also account for 48% of that of the United States. In 2022, bioethanol production in developing countries is expected to increase by two-thirds, 80% of which will come from Brazil, and a large part of the remaining 20% ​​will come from India and China. The raw materi...

Claims

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Application Information

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IPC IPC(8): B09C1/00C10B53/02C10G1/00
CPCY02E50/14Y02E50/10
Inventor 汪印朱永官张耿崚蔡超黄青邢贞娇
Owner ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
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