Method for regenerating engine oil by using biomass wastes

A technology for biomass waste and waste oil, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as environmental pollution and waste of biomass resources, and achieve good adsorption performance, The effect of solving waste problems, significant economic benefits and social value

Inactive Publication Date: 2014-07-16
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Biomass resources are abundant in the world, but due to the backwardness of preservation and transformation technology, biomass resources are seriously wasted, such as straw and other agricultural wastes are incinerated in the field, and the shells and skins of food processing are treated as garbage landfills, which not only pollute environment, but also caused a huge waste of biomass resources

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  • Method for regenerating engine oil by using biomass wastes

Examples

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Effect test

Embodiment 1

[0022] A method for regenerating waste engine oil from biomass waste, the steps are as follows:

[0023] 1) Crush the walnut shell waste to obtain particles with a particle size of 1mm, wash with deionized water to remove impurities, dry at 105°C for 4 hours, and set aside;

[0024] 2) Add the dried walnut shells to a phosphoric acid solution with a concentration of 40wt%, with a liquid-solid mass ratio of 1:1, carbonize at 400°C for 0.5h under the protection of nitrogen, and then raise the temperature to 600°C for 60min to activate the obtained The product was pickled with 3% sulfuric acid by mass percentage, then washed with water until neutral, dried at 105-110°C for 2 hours, and cooled to room temperature to obtain activated carbon from walnut shell biomass. The attached figure shows the activated carbon from walnut shell biomass under this condition scanning electron microscope;

[0025] 3) After the waste engine oil is left to stand, it is separated into layers, the wat...

Embodiment 2

[0028] A method for regenerating waste engine oil from biomass waste, the steps are as follows:

[0029] 1) Crush the peanut shell waste to obtain particles with a particle size of 1mm, wash with deionized water to remove impurities, dry at 105°C for 3 hours, and set aside;

[0030] 2) Carbonize the dried peanut shells at 850°C for 1 hour under the protection of nitrogen, pickle the obtained product with hydrochloric acid with a concentration of 4% by mass percentage, then wash with water until neutral, dry at 105-110°C for 2 hours, and cool to room temperature , to prepare peanut shell biochar;

[0031] 3) After the waste engine oil is left to stand, it is separated into layers, the water in the lower layer is removed, and then the solids and suspended matter are filtered to obtain the treated waste engine oil;

[0032] 4) Heat the above treated waste engine oil to 60°C, add peanut shell biochar under continuous stirring, the ratio of peanut shell biochar to waste engine oil...

Embodiment 3

[0034] A method for regenerating waste engine oil from biomass waste, the steps are as follows:

[0035] 1) Crush the dried sludge from the sewage treatment plant to obtain particles with a particle size of 0.5mm, wash with deionized water to remove impurities, dry at 105°C for 5 hours, and set aside;

[0036] 2) Carbonize the dried sludge at 300°C for 1 hour under the protection of nitrogen, activate it with water vapor at 500°C for 0.5 hour, pickle the obtained product with hydrochloric acid with a concentration of 10% by mass, then wash it with water until neutral, Dry at -110°C for 2 hours and cool to room temperature to prepare activated carbon from sludge biomass;

[0037] 3) After the waste engine oil is left to stand, it is separated into layers, the water in the lower layer is removed, and then the solids and suspended matter are filtered to obtain the treated waste engine oil;

[0038] 4) Heat the above treated waste engine oil to 120°C, add sludge activated carbon ...

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Abstract

The invention discloses a method for regenerating engine oil by using biomass wastes. The method comprises the following steps: 1) crushing the biomass wastes into granules, cleaning, and drying for later use; 2) preparing biomass charcoal or biomass active carbon under the protection of nitrogen; 3) standing waste engine oil for layering, dewatering, filtering solids and treating suspended matters; 4) heating the treated waste engine oil, adding the biomass charcoal or biomass active carbon while stirring to perform reaction, then cooling and performing suction filtration to obtain regenerated engine oil. The method has the advantages that the biomass charcoal or biomass active carbon prepared from the biomass wastes in the method has high a specific surface area and good adsorption performance, resourceful waste is eliminated, reutilization of resources is realized, a good decolorizing agent is developed for the waste engine oil, and the transmittance of the regenerated engine oil can reach 50-90%; recycling, reduction and harmlessness of the biomass wastes and the waste engine oil are realized, so that the method has significant economic benefit and social value.

Description

technical field [0001] The invention relates to a regeneration process of waste engine oil, in particular to a method for regenerating waste engine oil from biomass waste. Background technique [0002] Waste engine oil refers to the waste lubricating oil replaced from various machinery, vehicles, and ships. The production process is due to the fact that the lubricating oil is polluted by the outside during use and produces a large amount of colloids and oxides. [0003] At present, the regeneration of waste engine oil often adopts the acid-clay process, which uses concentrated sulfuric acid to remove impurities such as organic matter in waste engine oil, and then uses activated clay to absorb pigments at a high temperature of 200-300°C, and removes mechanical impurities by filtration, so as to achieve the purpose of engine oil regeneration . However, this process will generate a considerable amount of three waste products (acid residue, acid gas, waste water). Among them,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00B01J20/20B01J20/28B01J20/30
Inventor 张瑞玲周雅楠高磊
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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