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Preparation method of plasticizer for plastic medical apparatus

A technology for medical devices and plasticizers, applied in the field of plasticizers, can solve the problems of difficult popularization and application of common products, complicated operation and high cost, and achieve the effects of being beneficial to social economy, high technical content and good quality

Inactive Publication Date: 2017-05-31
ANHUI YUANTONG HEATING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw materials for the production of epoxidized soybean oil in the current process are mostly native natural oils, which have high cost and complicated operation, and are only used in high-end products, and it is still difficult to popularize and apply ordinary products.

Method used

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  • Preparation method of plasticizer for plastic medical apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method based on a plasticizer for plastic medical appliances, the specific method steps are as follows:

[0023] (1) Use waste oil produced in catering as a raw material, put it in a container and heat it to 90°C, keep it for about 30 minutes, evaporate part of the water, and filter off the foam scum on the surface;

[0024] (2) Put the waste oil in the step (1) into the reaction kettle, turn on the stirring function, control the stirring speed at 280 rpm, stir continuously for about 40 minutes, stop stirring, put into activated clay for decolorization, activated clay and waste oil The weight ratio of the mixture is 2:100; keep the temperature at 68°C, stir continuously for 12 hours, filter when the temperature drops to about 40°C, and collect the liquid oil for later use;

[0025] The semi-solid activated clay that above-mentioned filtration produces recycles and uses again;

[0026] (3) Put the liquid oil into the reaction kettle, heat up to 75°C, put i...

Embodiment 2

[0033] A preparation method based on a plasticizer for plastic medical appliances, the specific method steps are as follows:

[0034] (1) Use waste oil produced in catering as raw material, put it into a container and heat it to 70°C, keep it for about 30 minutes, evaporate part of the water, and filter off the foam scum on the surface;

[0035] (2) Put the waste oil in the step (1) into the reaction kettle, turn on the stirring function, control the stirring speed at 260 rpm, stir continuously for about 40 minutes, stop stirring, put into activated clay for decolorization, activated clay and waste oil The weight ratio of the mixture is 6:100; keep the temperature at 65°C, stir continuously for 12 hours, filter when the temperature drops to about 40°C, and collect the liquid oil for later use;

[0036] The semi-solid activated clay that above-mentioned filtration produces recycles and uses again;

[0037] (3) Put the liquid oil into the reaction kettle, heat up to 65°C, put i...

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Abstract

The invention relates to a preparation method of a plasticizer for a plastic medical apparatus. The preparation method comprises the following steps: (1) by taking drainage oil as a raw material, putting the drainage oil in a container to be heated; (2) putting the drainage oil in a reaction kettle, stirring the drainage oil for 40 minutes, inputting activated clay to decolor and filtering and collecting liquid fat; (3) inputting the liquid fat into the reaction kettle, raising the temperature, inputting formic acid, stirring the mixture, adding ethanol from a head tank and uniformly mixing the mixture; (4) switching on a steam valve, raising the temperature, keeping the temperature for 80 minutes, then stirring the mixture for 60 minutes and terminating the reaction; (5) leaving the reactant to stand to be layered, and transferring an upper oil separated matter to a fractionating kettle to recover ethanol which is not fully reacted; (6) after recovering the ethanol, heating the fractionating kettle to 90 DEG C, then leaving the fractionating kettle to stand to separate lower waste acid water, and transfer the upper coarse product to a kettle rectifying column to be fractionated to obtain a regenerated drainage oil coarse product; and (7) firstly neutralizing the regenerated drainage oil coarse product with alkaline liquor, then washing the product to neutral, after separating water, distilling the oil layer with water vapor, distilling residual product in vacuum to remove low-boiling-point substances and water, and then performing filter pressing to obtain a plasticizer finished product.

Description

technical field [0001] The invention relates to the technical field of plasticizers, in particular to a preparation method based on plasticizers for plastic medical appliances. Background technique [0002] my country is a big country in the production and consumption of edible oil. The annual consumption of edible oil is as high as 21 million tons, and nearly 8 million tons of waste oil (mainly including kitchen hog oil and commercial frying oil) are produced every year during its use. Most of these waste oils are waste oils formed after frying and frying of edible oils, among which are toxic and harmful substances such as aldehydes, acids and benzene derivatives (such as aflatoxin) with complex molecular structures. Substances that flow into the catering industry after illegal processing will cause great harm to people's health. But it is also a huge waste to discard such a huge resource because it is not edible. How to make non-edible use of this widely sourced, cheap and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/00C08L27/06
CPCC08L91/00C08L27/06C08L2205/24
Inventor 李伟李长安
Owner ANHUI YUANTONG HEATING TECH CO LTD