Chemical modification method of purification peanut shells

A peanut shell and sodium sulfide technology, which is applied in chemical instruments and methods, separation methods, and other chemical processes, can solve the problems of limited sources, wood chip types and specifications restrictions, and high prices, and achieve increased area, lower crystallinity, and improved The effect of permeability

Active Publication Date: 2014-07-30
福州赛孚玛尼环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] These patented methods use wood chips as raw materials. Through simple alkali treatment, steam treatment or chemical treatment, etc., the machinability of wood chips is improved, which can prolong the service life of the filter, improve the accuracy of filtering solid impurities, and reduce exhaust emissions. There is some improvement, but the types and specifications of wood chips are limited, the sources are limited, and the price is high

Method used

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  • Chemical modification method of purification peanut shells

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 5 kilograms of peanut shells with a particle size of 8-20 mesh and put them into a 50-liter stirring reaction kettle with a polytetrafluoroethylene lining and a heating tube, then add 25 kilograms of 0.2mol / L sodium silicate aqueous solution, and heat at 25 ° C. Under the conditions of airtight stirring and impregnation for 6 hours, then filtered, washed 4 times with water 4 times the volume of peanut shells, drained, put in an oven at 80 ° C for 3 hours, the moisture content of peanut shells is 10%. Then put the obtained peanut shells into a 50-liter stirred reactor with a polytetrafluoroethylene lining and a heating tube, and add 25 kilograms of N,N-dimethylformamide, monoethanolamine, sodium sulfide, and sodium hydroxide. The mixed solvent with a mass ratio of 0.25:0.5:0.2:4:80 to water was reacted at 70°C for 24 hours. After filtering, it was washed 4 times with water that was 4 times the volume of peanut shells, and then drained. Bake in an oven at 120°C for 8...

Embodiment 2

[0038] Take 5 kilograms of peanut shells with a particle size of 4-15 mesh and put them into a 50-liter stirred reactor with a polytetrafluoroethylene lining and a heating tube, then add 20 kilograms of 0.5mol / L sodium silicate aqueous solution, and heat at 60 ° C. Stir and impregnate under airtight conditions for 5 hours, then filter, wash 4 times with water that is 4 times the volume of peanut shells, drain, put in an oven at 60°C for 4 hours, and the moisture content of peanut shells is 15%. Then put the obtained peanut shells into a 50-liter stirred reactor with a polytetrafluoroethylene lining and a heating tube, and add 20 kilograms of N,N-dimethylformamide, monoethanolamine, sodium sulfide, and potassium hydroxide. The mixed solvent with a mass ratio of 0.2:0.6:0.3:6:60 to water was reacted at 50°C for 48 hours, filtered and washed 6 times with water 4 times the volume of peanut shells, drained, and placed Bake in an oven at 100°C for 10 hours to obtain a modified peanu...

Embodiment 3

[0040] Take 4 kilograms of peanut shells with a particle size of 15-30 mesh and put them into a 50-liter stirring reaction kettle with a polytetrafluoroethylene lining and a heating tube, then add 18 kilograms of 0.6mol / L sodium silicate aqueous solution, and heat at 50 ° C. Stir and impregnate under airtight conditions for 4 hours, then filter, wash with water 4 times the volume of peanut shells, drain, put in an oven at 70°C for 4 hours, the moisture content of peanut shells is 12%. Then put the obtained peanut shells into a 50-liter stirred reactor with a polytetrafluoroethylene liner and a heating tube, add 30 kilograms of N,N-dimethylformamide, monoethanolamine, sodium sulfide, sodium ethylate and Mixed solvents with a water mass ratio of 0.25:0.55:0.3:8:100 were reacted at 20°C for 100 hours, filtered and washed 6 times with water 4 times the volume of peanut shells, drained, and placed in Bake in an oven at 90°C for 12 hours to obtain a modified peanut shell with a high...

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Abstract

The invention provides a chemical modification method of purification peanut shells which are used for filtering lubricating oil and made of peanut shells. The chemical modification method of the purification peanut shells includes: steeping the peanut shells under a temperature of 25-65DEG C for 1-10hours in a sodium silicate aqueous solution with concentration of 0.01-1.0mol / L, and then placing obtained peanut shells into a mixed solution for reacting, wherein the mixed solution comprises compositions of N, N-dimethyl formyl ammonium, monoethanolamine, sodium sulfide, alkali and water, the weight ratio of the compositions is 0.1-1:0.1-5:0.01-3:0.25-15: 15-200, the reaction is performed at a temperature of 20-80DEG C for 2-150 hours, peanut shells with high specific surfaces and rich structures and without sizing functions are obtained by washing and drying peanut shells after the reaction, and the obtained peanut shells can be used for preparing a variety of efficient filters, particularly an engine oil filter, can prolong service life of engine oil greatly, and simultaneously reduce discharge of vehicle exhaust hazardous substances.

Description

technical field [0001] The invention relates to a chemical modification method for filtering peanut shells, in particular to a chemical catalytic modification treatment method for lubricating oil filtering peanut shells. Background technique [0002] Peanut is the main oil crop in my country. Its total output and export volume both rank first in the world. The total annual peanut output in my country is about 15 million tons, accounting for 42% of the world's total peanut output. It can produce about 5 million tons of peanut shells per year. The chemical composition of peanut shells is relatively stable, and the typical mass percentages are: crude cellulose 63.27%, lignin 34.21%, ash 3.17%, containing a small amount of starch, protein, etc. Peanut shells have large porosity, loose structure, low density, brittle quality and poor toughness. Activated carbon with excellent adsorption performance can be obtained after activation with ZnCl and water vapor. The lignin content of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30B01D15/08B01D46/30
Inventor 陈晓晖潘守泉
Owner 福州赛孚玛尼环保科技有限公司
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