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Activated clay dry preparation process

A preparation process and soil drying technology, applied in the field of decolorizers, can solve the problems of low product activity, inability to completely remove clay acid, inability to apply in the field of food oil decolorization, etc., and achieve the effect of low water consumption

Inactive Publication Date: 2019-06-18
战国昌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, when the amount of activated acid used in the wet production process is small, the activity of the product is low, and when the amount of acid is large, the free acid content of the product exceeds the standard, and the water cleaning process often cannot completely remove the acid in the clay, and the excessive residual acid will lead to the performance of the clay. , and cannot be applied in the field of food oil decolorization

Method used

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  • Activated clay dry preparation process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: a kind of activated clay dry method preparation process comprises the following steps:

[0025] S1. Prepare materials, select calcium-based bentonite with montmorillonite content > 70% as raw material, crush it into particles with a diameter of no more than 1 cm with a crusher, and pulverize the crushed calcium-based bentonite to a particle size of more than 200 mesh;

[0026] S2. Activation, the pulverized calcium-based bentonite powder is put into a heating mixer, the heating mixer adopts a high-speed heating mixer, and dilute sulfuric acid with a concentration of 5-7% is added, and the amount of dilute sulfuric acid added is 20% of the total amount of calcium-based bentonite ~25%, heat up to 90~95℃ and knead for 1~3 hours;

[0027] S3, neutralize and remove acid, the kneading reaction is completed, stop heating and cool down to below 50°C, gradually add 20% concentration of amphoteric oxide, keep stirring during the addition process, stop adding until t...

Embodiment 2

[0031] Embodiment 2: a kind of activated clay dry method preparation process comprises the following steps:

[0032] S1. Prepare materials, select calcium-based bentonite with montmorillonite content > 70% as raw material, crush it into particles with a diameter of no more than 1 cm with a crusher, and pulverize the crushed calcium-based bentonite to a particle size of more than 200 mesh;

[0033] S2. Activation, the pulverized calcium-based bentonite powder is put into a heating mixer, the heating mixer adopts a high-speed heating mixer, and dilute sulfuric acid with a concentration of 5-7% is added, and the amount of dilute sulfuric acid added is 20% of the total amount of calcium-based bentonite ~25%, heat up to 90~95℃ and knead for 1~3 hours;

[0034] S3, neutralize and remove acid, the kneading reaction is completed, stop heating and cool down to below 50°C, gradually add 20% concentration of amphoteric oxide, keep stirring during the addition process, stop adding until t...

Embodiment 3

[0037] Embodiment 3: a kind of activated clay drying pulverizer, is used for one-time drying and pulverizing of activated clay in step S4 in embodiment 2, comprises high-speed pulverizer 4, and the feeding port of described high-speed pulverizer 4 is connected with drying Feed device, described drying feed device comprises feed cylinder 5, and feed cylinder 5 is provided with feed hopper 8 at one end far away from high-speed pulverizer 4, and described feed cylinder 5 is set with feed auger, so The outer periphery of the feed cylinder 5 is surrounded by several constant temperature electric heaters 6, and the side wall of the feed cylinder 5 is provided with an exhaust hole 6, and the exhaust hole 6 is arranged between two adjacent constant temperature electric heaters 6. between. The constant temperature electric heater 6 can be composed of a simple electric heating tube and a mechanical thermostat. The structure is simple and the cost is low, but the temperature control accu...

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Abstract

The invention discloses an activated clay dry preparation process and a special device. According to the process, calcium bentonite with the content of montmorillonite higher than 70% is selected as araw material, and minimum acid dosage is controlled. Compared with traditional superior high temperature kneading reaction, residual free acid is neutralized by amphoteric oxides, and main indicatorssuch as activity degree and color removal ratio of activated clay cannot be affected by salt formed after neutralization. Used water is less in the production process, a washing process is omitted, waste water, waste gas and waste are omitted, any environmental pollution is omitted, emission is omitted in the production process, green and environment-friendly production is achieved, and the activated clay dry preparation process is environmentally friendly.

Description

technical field [0001] The invention relates to the field of decolorizing agents, in particular to an activated clay dry preparation process applied in the field of decolorizing animal and vegetable oils. Background technique [0002] At present, activated clay is the most widely used and consumed one among various deep-processing products of bentonite, and processing activated clay is the main way to realize the high value-added utilization of bentonite resources. However, the production of activated clay in my country started late, and the output is small, among which the activated clay that can reach the international quality level is only 10% of the output. Moreover, with the development of the economy and the continuous improvement of people's living standards, the demand for petroleum products has greatly increased, and the demand for refined edible oil is increasing at a growth rate of more than 20% every year, prompting the domestic demand for activated clay. The an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40B02C23/02
Inventor 战国昌
Owner 战国昌
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