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Waste activated clay regeneration recycling technology

A technology of activated clay and production process, which is applied in the fields of filter regeneration, petroleum industry, fat production, etc. It can solve problems such as fire and odor, and achieve good decolorization effect, long shelf life, and no recovery of acid value

Inactive Publication Date: 2019-02-01
SHANDONG SANXING CORN IND SCI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the normal disposal method of waste activated clay was discarded to landfill; however, waste activated clay contains unsaturated oil, which will quickly oxidize to the point of spontaneous combustion, resulting in odor and the danger of fire. Based on the above reasons, many countries have now Disposal of spent activated clay in landfills or public disposal sites is no longer permitted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) The corn oil refining process steps are: crude oil→alkali refining→decolorization→dewaxing→deodorization→finished product; new activated clay is added to the dry oil obtained after the corn oil is processed by the alkali refining process, and the pigment is adsorbed by the new activated clay The decolorized oil and waste activated clay are obtained by separation, and the waste activated clay is treated with n-hexane, then calcined at a high temperature and directly used in the decolorization process, so as to realize the recycling of the waste activated clay.

[0021] (2) Waste activated clay and n-hexane were mixed and stirred for 5 minutes at a mass ratio of 1:4, and then filtered four times to obtain waste n-hexane and treated waste activated clay. The treated waste activated clay was placed in an oven at 55°C Stir and bake for 32 minutes, and then calcine after the n-hexane is completely volatilized; waste activated clay is calcined at 500°C for 35 minutes, and t...

Embodiment 2

[0026] (1) The corn oil refining process steps are: crude oil→alkali refining→decolorization→dewaxing→deodorization→finished product; new activated clay is added to the dry oil obtained after the corn oil is processed by the alkali refining process, and the pigment is adsorbed by the new activated clay The decolorized oil and waste activated clay are obtained by separation, and the waste activated clay is treated with n-hexane, then calcined at a high temperature and directly used in the decolorization process, so as to realize the recycling of the waste activated clay.

[0027] (2) Waste activated clay and n-hexane were mixed and stirred at a mass ratio of 1:4 for 8 minutes, and then filtered four times to obtain waste n-hexane and treated waste activated clay. The treated waste activated clay was placed in an oven at 55°C Stir and bake for 35 minutes, and then calcine after the n-hexane volatilizes completely; waste activated clay is calcined at 530°C for 32 minutes, and then...

Embodiment 3

[0032] (1) The corn oil refining process steps are: crude oil→alkali refining→decolorization→dewaxing→deodorization→finished product; new activated clay is added to the dry oil obtained after the corn oil is processed by the alkali refining process, and the pigment is adsorbed by the new activated clay The decolorized oil and waste activated clay are obtained by separation, and the waste activated clay is treated with n-hexane, then calcined at a high temperature and directly used in the decolorization process, so as to realize the recycling of the waste activated clay.

[0033] (2) Waste activated clay and n-hexane were mixed and stirred at a mass ratio of 1:4 for 10 minutes, and then filtered four times to obtain waste n-hexane and treated waste activated clay. The treated waste activated clay was placed in an oven at 60°C Stir and bake for 30 minutes, and then calcine after the n-hexane is completely volatilized; waste activated clay is calcined at 550°C for 30 minutes, and ...

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Abstract

The invention belongs to the technical field of edible oil by-product processing, and more specifically relates to a waste activated clay regeneration recycling technology. Corn oil refining technology comprises following steps: crude oil preparation; alkali refining; decolouring; de-waxing; deodorizing; and obtaining of finished products; corn oil is subjected to alkali refining, new activated clay is added into obtained dried oil for adsorption and separation of pigments so as to obtain decolored oil and waste activated clay, high temperature sintering is adopted, obtained regenerated activated clay can be applied in decolouring process directly, and waste activated clay recycling is realized. According to the waste activated clay regeneration recycling technology, waste activated clay recycling is realized, resource is saved, and energy saving, consumption reduction, and green environment protection are realized; waste activated clay is processed with n-hexane, and high temperaturesintering is adopted, decoloring effect is excellent, after decoloring, second time acid value increasing is not caused, color reversion is avoided, the obtained finished products are clear and transparent, the quality is stable, and the self life is long.

Description

technical field [0001] The invention belongs to the technical field of edible oil by-product processing, and in particular relates to a production process for recycling waste activated clay. Background technique [0002] Clay is gray-white granular powder with large specific surface area and pore volume, special adsorption capacity and ion exchange performance, strong decolorization ability and activity, and good stability after decolorization. Mainly used in the petroleum industry, it can adsorb unsaturated hydrocarbons, sulfides, colloids, asphaltenes and other unstable substances and colored substances of petroleum minerals such as paraffin and lubricating oil. Generally, clay usually refers to activated clay and acid clay. Activated clay is an adsorbent made from clay (mainly bentonite), which is treated with inorganic acidification, rinsed with water, and dried. The appearance is milky white powder, odorless, tasteless, non-toxic, and has strong adsorption performance....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34C11B3/10
CPCB01J20/3433B01J20/3483C11B3/10
Inventor 王月华梁少华王萍程芳园张素芬孙德江谢梦娇王秀华
Owner SHANDONG SANXING CORN IND SCI CO LTD
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