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Preparation method of organosilicon mixed rings produced by cracking oil residue with organosilicon

A hybrid ring and organosilicon technology, applied in the direction of silicon organic compounds, can solve the problems of low specific gravity, no open heating method, high energy consumption, and achieve stable equipment operation, convenient cleaning and maintenance, and stable and safe equipment operation. Effect

Active Publication Date: 2020-07-17
江西星火狮达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent mainly prepares DMC products, and it is prepared at high temperature, which consumes a lot of energy. At the same time, it does not disclose what kind of heating method is used, and in many published documents, the DMC produced by cracking is generally D 3 、D 4 The main product, and the proportion is not high

Method used

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  • Preparation method of organosilicon mixed rings produced by cracking oil residue with organosilicon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like figure 1 Shown, utilize the preparation method of organosilicon cracking oil residue to produce organosilicon mixed ring body, comprise the following steps:

[0042](a) Primary cracking: first chop the organosilicon cracking oil residue discharged from the hydrolysis cracking workshop and put it into the coarse cracking kettle 1, manually or mechanically cut it into regular 10cm×50cm×10cm, and the input amount is 100kg; then add 5wt% D. 4 , 5wt% KOH aqueous solution is reacted, and the mass concentration of KOH aqueous solution is 50%;

[0043] (b) After the feeding is completed, the heat conduction oil system is used to heat up the crude cracking kettle 1, and the temperature is raised in two stages. When the temperature of the cracking kettle reached 120°C, the stirring device in the crude cracking kettle 1 and the vacuum pump 2 connected to the crude cracking kettle 1 were started at the same time. 130m 3 / h, the feed liquid extracted by the vacuum pump 2 is...

Embodiment 2

[0050] This embodiment is modified on the basis of embodiment 1, specifically, the addition of KOH aqueous solution in the step (a) is 10 wt%, and the rest of the steps are the same as in embodiment 1.

Embodiment 3

[0052] This example is changed on the basis of Example 1, specifically, the amount of KOH aqueous solution added in the step (a) is 15 wt%, and the rest of the steps are the same as in Example 1.

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Abstract

The invention discloses a method for preparing an organosilicon hybrid ring from organosilicon cracking oil residues. The method comprises the following steps: cutting the organic silicon cracking oilresidues into fine pieces, putting the fine pieces into a crude cracking kettle, and adding a KOH aqueous solution and D4; performing primary cracking under the vacuum condition to obtain a crude product; putting the crude product into a secondary cracking rearrangement kettle, and adding sulfonic acid and concentrated sulfuric acid for secondary cracking rearrangement to obtain a high-purity D5hybrid ring; cooling the high-purity D5 hybrid ring, and placing the cooled high-purity D5 hybrid ring into a settling tank for washing with water, precipitating, filtering and packaging. The crackedoil residues are recycled, and waste is changed into treasure; content of D5 in the hybrid ring prepared with the method is higher than 70%, production efficiency is high, and the hybrid ring is usedas a basic raw material for production in high-end printing and dyeing industries and synthesis of silicone oil for cosmetics.

Description

technical field [0001] The invention relates to the technical field of organosilicon pyrolysis oil residue recovery, in particular to a preparation method for producing organosilicon mixed rings by utilizing organosilicon pyrolysis oil residue. Background technique [0002] Silicone has excellent electrical insulation, mold release, excellent water resistance, cold resistance, heat resistance, high flexibility, and is widely used in construction industry, electronics industry, transportation industry, medicine, cosmetics, textiles and paper coating layer industry. With the continuous development of the silicone industry, various types of silicone oils and secondary processed products, silicone resins and silane coupling agents and other products have come out one after another. However, a large amount of waste is generated during the production, processing and use of products, such as Cracking of cured silicone rubber, oxidized and yellowed silicone oil and other deteriorat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/21
CPCC07F7/21
Inventor 游孟松谢正奎黄忠
Owner 江西星火狮达科技有限公司
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