Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent

A technology of polystyrene foam and vegetable oil, which is applied in the direction of plastic recycling, recycling technology, fuel, etc., can solve the problems of limited popularization, high production cost, and few sources of raw materials, so as to achieve rich sources, low energy consumption, and recycling high rate effect

Inactive Publication Date: 2009-02-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of volume reducer is a natural extract, with few sources of raw materials and high preparation cost, and the recovery of the volume reducer requires repeated vacuum filtration and vacuum distillation, which has a high cost of volume reduction, which limits its popularization and use; Xylene, chlorobenzene, alkanes and their esters are used as volume reducers, which are less used because of their strong toxicity, low boiling point, and potential safety hazards in the volume reduction process (Lu Tingfeng, CN101153090A, 2008)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Provide soybean oil methyl esterification products;

[0021] Styrofoam 10.0g (density 0.02g / cm 3 ) into particles with a diameter of less than 2cm, and added to 25mL soybean oil methyl esterification product (density 0.88g / cm 3 ) in a beaker at a constant temperature of 15°C, wait until it is completely dissolved, let it stand until the solution is clear, then filter, and discard the filtrate. Add 25 mL of 0 to the filtrate # Diesel oil, shaking, a large amount of white precipitate appeared in the solution, after standing for 5 minutes, filter out the precipitate and measure it, the recovered polystyrene density is 0.80g / cm 3 , The recovery rate is 98.5%, and the recovered polystyrene reaches the standard performance. Filtrate is filtered with G4 glass sand core funnel, and its filtrate is the diesel oil solution that is dissolved with volume reducer, and through gas chromatography detection, fatty acid methyl ester content is 49.6%; Add 76.23mL 0 to the filtrate # ...

Embodiment 2

[0023] Provide rapeseed oil methyl esterification product;

[0024] 10.0g polystyrene foam (density 0.02g / cm 3 ) into particles with a diameter of less than 2cm, and added to 40mL rapeseed oil methyl esterification product (density 0.88g / cm 3 ) in a beaker at a constant temperature of 25°C, wait until it is completely dissolved, let it stand until the solution is clear, then filter, and discard the filtrate. Add 40 mL of 0 to the filtrate # Diesel oil, shaking, a large amount of white precipitate appeared in the solution, after standing for 5 minutes, filter out the precipitate and measure it, the recovered polystyrene density is 0.80g / cm 3 , The recovery rate is 98.5%, and the recovered polystyrene reaches the standard performance. The filtrate is filtered with a G4 glass sand core funnel, and detected by gas chromatography, the fatty acid methyl ester content is 49.3%; add 120.73mL 0 to the filtrate # Diesel oil is stirred evenly to obtain B20 composite biodiesel.

Embodiment 3

[0026] Provide palm oil methyl esterification products;

[0027] Styrofoam 10.0g (density 0.02g / cm 3 ) was crushed into particles with a diameter less than 2cm, and added to 50mL palm oil methyl esterification product (density 0.87g / cm 3 ) in a beaker at a constant temperature of 40°C, wait until it is completely dissolved, let it stand until the solution is clear, then filter, and discard the filtrate. Add 50 mL of 0 to the filtrate # Diesel oil, shaking, a large amount of white precipitate appeared in the solution, after standing for 5 minutes, the precipitate was filtered out and weighed, the recovered polystyrene density was 0.79g / cm 3 , The volume reduction recovery rate is 98.0%, and the recovered polystyrene reaches the standard performance. The filtrate is filtered with a G4 glass sand core funnel, and detected by gas chromatography, the fatty acid methyl ester content is 49.2%, and 150.40mL 0 is added to the filtrate. # Diesel oil is stirred evenly to obtain B20 c...

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Abstract

The invention discloses a method for reclaiming polystyrene foam plastics with the product of methyl esterification of vegetable grease used as volume reducing agent. The method comprises the following steps: the product of methyl esterification of vegetable grease is provided, the polysterene foam plastics is crushed, the polysterene foam plastics is dissolved, the polystyrene precipitation is separated, and the filtrate is processed; all the volume reducing agent and precipitator (0<#> diesel oil) are used to prepare compound biological diesel oil. The technical process is simple, the service efficiency of the volume reducing agent is above 98 percent; the energy consumption during the technical process is little, the reaction condition is mild, the recovery rate of polystyrene is above 97 percent; the raw materials are rich, and secondary pollution is avoided with innocuity.

Description

Technical field: [0001] The invention belongs to the field of environmental protection and energy saving, and in particular relates to a method for recovering polystyrene foam plastics by using vegetable oil methyl esterification products as volume reducers. technical background: [0002] As the name implies, insolubilizers are solvents that can reduce the volume of solids. The polystyrene foam compatibilizers currently used mainly include natural components and petrochemical components: (1) Ledum volatile oil components and limonene purified from citrus peel essential oils; (2) organic xylene , Chlorobenzene, alkanes and their esters. [0003] Among the above volume reducers, the natural product Ledum volatile oil component and limonene extracted from citrus peel essential oil have obvious defoaming effect, are non-toxic and harmless, and are easy to recycle and are valued (Guo Xueyi, ZL200510032267.X , 2007). This kind of volume reducer is a natural extract, with few so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/08C08L25/06C10L1/04C10L1/19
CPCY02W30/62
Inventor 高贵曹淑桂韩四平郑良玉
Owner JILIN UNIV
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