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A kind of high temperature resistant delayed coking defoamer composition and preparation method thereof

A technology for a composition and a defoaming agent is applied in the defoaming agent composition and its preparation, and the field of the defoaming agent composition containing glycerin-type dendritic polyether and polyaromatic amine is introduced, which can solve the problem of increased defoaming cost and penetration. It can solve the problems of slow diffusion and general defoaming effect, and achieve the effect of fast defoaming speed, inhibition of degradation failure, and large spreading coefficient.

Active Publication Date: 2016-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defoamer does not contain any silicon element, and will not affect the downstream hydrogenation process and the quality of the final light oil product, but the disadvantage is that the active components are not enough, and the penetration and diffusion in the tower are slow, so the addition amount is large, The cost is higher than that of silicone defoamers, while the high temperature resistance is poor, and the defoaming efficiency is low at high temperatures
[0007] US5667669 provides a method of replacing silicon-containing defoamers with animal and vegetable oils and polyisobutylene, which not only increases the cost of defoaming, but also has a general defoaming effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Disperse 10 parts of poly-p-phenylenediamine in 20 parts of 2-ethylhexanol, stir in a water bath at 20°C for 1 hour, then add 5 parts of glycerol dendritic polyether, 3 parts of fluorine-containing polysiloxane , 2 parts of polyborosiloxane, 5 parts of ethyl cellulose and 60 parts of hydrogenated diesel oil were stirred and reacted at 130° C. for 3 hours, and the defoamer composition was obtained after cooling.

Embodiment 2

[0031] Disperse 5 parts of poly-p-phenylenediamine in 30 parts of 3-heptanol, stir in water at 30°C for 1 hour, then add 6 parts of glycerol-type dendritic polyether, 2 parts of fluorine-containing polysiloxane, 2 parts Parts of polyborosiloxane, 10 parts of ethyl cellulose and 55 parts of kerosene were stirred and reacted at 130°C for 3 hours, and the defoamer product was obtained after cooling.

Embodiment 3

[0033] Disperse 10 parts of poly-p-phenylenediamine in 30 parts of 3-heptanol, stir in water at 20°C for 1 hour, then add 3 parts of glycerol-type dendritic polyether, 1 part of fluorine-containing polysiloxane, 1 Parts of polyborosiloxane, 3 parts of ethyl cellulose and 55 parts of kerosene were stirred and reacted at 120°C for 4 hours, and the defoamer product was obtained after cooling.

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PUM

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Abstract

The invention relates to a heat-resistant delayed coking defoaming agent composition and a preparation method thereof. A defoaming agent is compounded by polyborosiloxane resin, ethyl cellulose, fluorine-containing polysiloxane, glycidyl dendritic polyether, poly-p-phenylenediamine, high alcohols and a solvent. The preparation method of the defoaming agent disclosed by the invention comprises the following steps: dispersing poly-p-phenylenediamine into the high alcohols, stirring in a water area at 10-30 DEG C for 1-3 hours, and then adding the glycidyl dendritic polyether, the fluorine-containing polysiloxane, the polyborosiloxane resin, the ethyl cellulose and the solvent; and stirring and reacting at 100-150 DEG C for 1-5 hours, and cooling to obtain a defoaming agent product. The delayed coking defoaming agent disclosed by the invention has good defoaming and antifoaming performance at 400-500 DEG C, and can still keep good antifoaming performance and stability in a high-temperature delayed coking process.

Description

technical field [0001] The invention relates to a defoamer composition and a preparation method thereof, in particular to a defoamer composition containing glycerin-type dendritic polyether and polyarylamine, which belongs to the technical field of fine chemicals. Foaming agents are especially useful in the field of delayed coking. Background technique [0002] Delayed coking is a thermal processing process that converts residual oil into coking dry gas, coking gasoline and diesel oil, coking gas oil and coke by deep cracking. The raw material residue of delayed coking contains natural surfactant, which makes a large amount of foam in the coking reaction tower during the delayed coking process, forming a very high foam layer. The foam layer contains a large amount of coke powder. When the coke layer in the coke tower rises to a certain height in the later stage of coking, the foam layer will be carried from the oil and gas pipeline at the top of the coke tower to the fracti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04
CPCC10G9/16C10G2300/802
Inventor 王鑫刘纾言孙鹏
Owner CHINA PETROLEUM & CHEM CORP