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 problems such as low added value and environmental pollution, and achieve reduced peroxide content, simple operation process, and small pore size. Effect

Inactive Publication Date: 2013-07-31
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

Method used

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

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Effect test

Embodiment 1

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

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

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

[0032] (4) Activation: Put the carbonized granules in a retort, add a steam superheating coil and put it into a heating furnace, heat it up to 840°C at a rate of 20°C per minute, keep it sealed, continue to feed isothermal superheated steam and seal it Store for 90 m...

Embodiment 2

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

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

[0036] (3) Carbonization: Carbonization is carried out in a retort. The peanut shell cylinders are 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 at 3mm.

[0037](4) Activation: Put the carbonized granules in a retort, add a steam superheating coil and put it into a heating furnace, heat it up to 850°C at a rate of 20°C per minute, continuously feed isothermal superheated steam and seal it for 100min. And e...

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, then add water to mix, adjust the moisture content to 8%, and store in an airtight container at room temperature for 80 hours .

[0040] (2) Extrusion molding: Use a granulator to press peanut shell particles on a flat plate at 95°C to form cylindrical particles with a diameter of 6 mm and a length of 20 mm.

[0041] (3) Carbonization: carbonization is carried out in a retort, and the peanut shell cylinder is heated to 600°C at a rate of 2°C / min, and 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 granules in a retort, add a steam superheating coil and put it into a heating furnace, heat it up to 860°C at a rate of 21°C per minute, continuously feed isothermal superheated steam and seal it for...

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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 in particular 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 most edible and consumed edible oil by ordinary people in our 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, and peanut oil that has not been detoxified after processing often contains excessive levels of 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, it is prone to oxidative rancidity in the process of storage and processing. Aflatoxin and benzopyrene exceeding the standard are the most common and widespread in peanut oil pollution. Aflatoxin...

Claims

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Application Information

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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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