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Modified adsorbent, refined grease and preparation method thereof

A technology for refining oil and adsorbent, applied in the field of refined oil and its preparation, modified adsorbent, and can solve problems such as poor effect

Pending Publication Date: 2020-10-27
HUBEI GEDIAN HUMANWELL PHARMA EXCIPENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the problems in the prior art that deacidification, decolorization and reduction of peroxide value are usually carried out step by step, and the effect poor defects, but provide a modified adsorbent, refined oil and preparation method thereof

Method used

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  • Modified adsorbent, refined grease and preparation method thereof
  • Modified adsorbent, refined grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] (1) Preparation of layered double metal hydroxides

[0073] In a 2L beaker, add 1.0mol magnesium hydroxide and 1.0mol aluminum hydroxide respectively, then add 500mL water, stir to mix the magnesium hydroxide and aluminum hydroxide evenly to obtain a suspension; mix 1.0mol sodium bicarbonate and Add 200mL of water into a 500mL beaker, stir to dissolve completely, and obtain a sodium bicarbonate solution; then add the sodium bicarbonate solution to the above suspension, stir for 30 minutes to mix evenly, and obtain a mixed solution;

[0074] Slowly raise the temperature of the above mixture to 80-90°C, control the heating rate at 0.5-1.0°C / min, and react at 80-90°C for 3 hours, then cool to room temperature, keep stirring for 3 hours, and then slowly heat up to 60-70°C °C, the heating rate is controlled at 1.0-2.0 °C / min. The layered double metal hydroxide was obtained. After drying, the layered double metal hydroxide had a mass of 165 g. A suspension with a mass concen...

Embodiment 2

[0078] (1) Preparation of layered double metal hydroxides

[0079] In a 2L beaker, add 1.0mol magnesium hydroxide and 1.0mol calcium hydroxide respectively, then add 500mL water, stir to mix the magnesium hydroxide and aluminum hydroxide evenly to obtain a suspension; mix 2.4mol sodium sulfate and 500mL Add water into a 1000mL beaker, stir to dissolve completely, and obtain a sodium sulfate solution; then add the sodium sulfate solution to the suspension, stir for 30 minutes to mix evenly, and obtain a mixed solution;

[0080] Slowly raise the temperature of the above mixture to 80-90°C, control the heating rate at 0.5-1.0°C / min, and react at 80-90°C for 3 hours, cool to room temperature, keep stirring for 3 hours, and then slowly heat up to 60-70°C , the heating rate is controlled at 1.0-2.0°C / min, and the layered double metal hydroxide is obtained. The mass of the layered double hydroxide after drying was 160 g, and a suspension of the layered double hydroxide with a mass c...

Embodiment 3

[0084] (1) Preparation of layered double metal hydroxides

[0085] In a 2L beaker, add 1.0mol aluminum hydroxide and 1.0mol calcium hydroxide respectively, then add 500mL water, stir to mix the aluminum hydroxide and calcium hydroxide uniformly to prepare a suspension; mix 1.0mol sodium carbonate and 500mL Add water into a 1000mL beaker, stir to dissolve completely, and obtain a sodium carbonate solution; add the sodium carbonate solution to the above suspension, stir for 30 minutes to mix evenly, and obtain a mixed solution;

[0086] Slowly raise the temperature of the above mixture to 80-90°C, control the heating rate at 0.5-1.0°C / min, and react at 80-90°C for 3 hours; then cool to room temperature, keep stirring for 3 hours, and then slowly heat up to 60-70°C ℃, the heating rate is controlled at 1.0-2.0 ℃ / min, and the layered double metal hydroxide is obtained. The quality of the layered double metal hydroxide after drying is 160g, and the layered double metal hydroxide wit...

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Abstract

The invention discloses a modified adsorbent, refined grease and a preparation method thereof. The preparation method of the modified adsorbent comprises the following steps: mixing a suspension of layered double hydroxides with a solution of reducing salt for the first time, and then mixing with a decolorizing adsorbent for the second time, wherein the mass molar ratio of the layered double hydroxide to the reducing salt is 100: 1-300: 1, the mass ratio of the layered double hydroxide to the decolorizing adsorbent is 3: 1-5: 1, and the reducing salt comprises sulfite and / or nitrite. The modified adsorbent can reduce the acid value, chroma, peroxide value and other parameters in the grease at the same time, and the purity of the obtained grease is better.

Description

technical field [0001] The invention relates to a modified adsorbent, refined oil and a preparation method thereof. Background technique [0002] In the pharmaceutical excipients or cosmetics industry, oils and fats are widely used raw materials, mainly used as dispersants, solvents and carriers, and play an irreplaceable role. Therefore, the pharmaceutical and cosmetic industries have high quality requirements for oil and fat raw materials, especially the requirements for key indicators such as color, acid value and peroxide value are almost strict. [0003] At present, the production of pharmaceutical grade oil in China is basically carried out on the basis of food grade oil, decolorization, deacidification, and reduction of peroxide value. Maintain vacuum heating to stabilize the peroxide value, but this process requires multi-step operations, the process is cumbersome, high energy consumption, slow filtration speed leads to low yield, unstable and uneven color of the ob...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/08B01J20/30C11B3/10
CPCB01J20/28033B01J20/08C11B3/10Y02W30/74
Inventor 曹金肖舒文黄虎李盛胡瑞冉文华李文文刘淦田佳焦阳张阳洋
Owner HUBEI GEDIAN HUMANWELL PHARMA EXCIPENTS
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