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Peanut shell activated carbon for removing toxins in peanut oil and preparation method thereof

A peanut shell and activated carbon technology, applied in chemical instruments and methods, non-metallic elements, inorganic chemistry, etc., can solve the problems of environmental pollution and low added value, achieve simple operation process, reduce peroxide content, and improve product safety quality effect

Inactive Publication Date: 2015-06-24
山东沂蒙山花生油股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Peanut shell is a kind of excellent activated carbon resource. my country's peanut shell resources are very rich, but at present peanut shells are mostly used as fuel. low value, and even cause new environmental pollution

Method used

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  • Peanut shell activated carbon for removing toxins in peanut oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Pretreatment: Put the cleaned peanut shells in a 180°C flowing steam environment for 2 hours, crush them through a 2mm aperture sieve, add water to mix, adjust the water content to 4%, and store in a closed container at room temperature for 72 hours.

[0030] (2) Extrusion: Use a pelletizer to press peanut shell particles on a flat plate at 100°C into cylindrical pellets with a diameter of 6mm and a length of 12mm.

[0031] (3) Carbonization: Carbonization is carried out in a retort. The peanut shell cylinder is energized and heated to 450°C at a rate of 2°C / min, then cooled to room temperature under closed conditions, crushed and sieved, and the particle diameter is controlled to 1mm.

[0032] (4) Activation: Put the carbonized particles in a retort, add a steam superheating coil to the heating furnace, heat it to 840°C at a rate of 20°C per minute, store it in a sealed state, and continuously pass in isothermal superheated steam and seal it Save for 90 minutes, and ensur...

Embodiment 2

[0034] (1) Raw material pretreatment: Put the cleaned peanut shells in a flowing steam environment at 178℃ for 2.2h, crush them through a 2mm aperture sieve, add water to mix, adjust the water content to 6%, and store at room temperature for 78h in a closed container .

[0035] (2) Extrusion: Use a pelletizer to press peanut shell particles on a flat plate at 100°C into cylindrical pellets with a diameter of 6mm and a length of 18mm.

[0036] (3) Carbonization: Carbonization is carried out in a retort. The peanut shell cylinder is energized and heated to 500°C at a rate of 2°C / min, then cooled to room temperature under closed conditions, crushed and sieved, and the particle diameter is controlled to 3mm.

[0037] (4) Activation: Put the carbonized particles in a retort, add a steam superheating coil into the heating furnace, heat it to 850°C at a rate of 20°C per minute, continue to pass in isothermal superheated steam and keep it sealed for 100 minutes. And ensure that the mass rat...

Embodiment 3

[0039] (1) Raw material pretreatment: Put the cleaned peanut shells in a flowing steam environment at 175°C for 2.5 hours, crush them through a 2mm aperture sieve, add water to mix, adjust the moisture content to 8%, and store in a closed container at room temperature for 80 hours .

[0040] (2) Extrusion molding: The peanut shell particles are pressed on a 95°C flat plate with a pelletizer to form cylindrical particles with a diameter of 6mm and a length of 20mm.

[0041] (3) Carbonization: Carbonization is carried out in a retort. The peanut shell cylinder is energized and heated to 600°C at a rate of 2°C / min, then cooled to room temperature under closed conditions, crushed and sieved, and the particle diameter is controlled at 2.5mm .

[0042] (4) Activation: Put the carbonized particles in a retort, add a steam superheating coil into the heating furnace, and heat to 860°C at a rate of 21°C per minute. Continuously pass in isothermal superheated steam and seal for 80min. And ens...

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Abstract

The invention belongs to the technical field of activated carbon, and particularly relates to a peanut shell activated carbon for removing toxins in peanut oil and a preparation method thereof. The peanut shell activated carbon is prepared by carrying out pretreatment, extrusion molding, carbonization and activation on peanut shells. The preparation method comprises the following steps: pretreatment: carrying out hydrothermal treatment on the peanut shells, and pulverizing; extrusion molding: carrying out pressure molding with a granulator to obtain cylindrical granules of which the diameters are 4-8 mm and the lengths are 10-20 mm; heating, cooling in the absence of oxygen, crushing and screening to control the granule diameters at 1-3 mm; and introducing isothermal superheated vapor, storing in a sealed environment, and cooling to obtain the finished product. The activated carbon is prepared from the peanut shells which are accessible raw materials, thereby implementing utilization of waste peanut shells; and the obtained peanut shell activated carbon has the advantages of large specific area and small pore size, can simultaneously adsorb benzopyrene, aflatoxin and other harmful substances, and can prevent the peanut oil from oxidative rancidity.

Description

Technical field [0001] The invention belongs to the technical field of activated carbon, and specifically relates to a peanut shell activated carbon for removing toxins in peanut oil and a preparation method thereof. Background technique [0002] Peanut oil is the edible oil with the largest consumption and consumption by ordinary people in my country, but the safety of edible oil based on peanut oil is not optimistic. Peanut oil raw materials are susceptible to infection by Aspergillus flavus during storage and transportation. Peanut oil that has not been detoxified after processing often contains excessive aflatoxins (mainly aflatoxin B). 1 ), in the process of processing, high temperature is easy to produce benzopyrene, because vegetable oil contains multiple unsaturated double bonds, oxidative rancidity is likely to occur during storage and processing. Excessive levels of aflatoxin and benzopyrene are the most common and widespread in peanut oil pollution. Aflatoxin is a grou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/10C01B32/336
Inventor 刘凤军周迅雷孙庆杰熊柳
Owner 山东沂蒙山花生油股份有限公司
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