Delay coking defoaming agent composition and preparation method thereof
A composition and defoamer technology, applied in the direction of foam dispersion/prevention, etc., can solve problems such as general defoaming effect, insufficient active components, slow penetration and diffusion, etc., achieve large spreading coefficient, fast diffusion, and improve crosslinking performance effect
Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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- Abstract
- Description
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- 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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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] 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 xx parts of glycerin dendritic polyether, xx parts of fluorine-containing polysiloxane , xx parts of vinyl polysilazane and 60 parts of hydrogenated diesel oil were stirred and reacted at 130° C. for 3 hours, and a defoamer composition was obtained after cooling.
Embodiment 2
[0029] Disperse 5 parts of poly-p-phenylenediamine in 30 parts of 3-heptanol, stir in water at 30°C for 1 hour, then add 10 parts of glycerol dendritic polyether and 55 parts of kerosene, and stir at 130°C for reaction After 3 hours, the defoamer product was obtained after cooling.
Embodiment 3
[0031] Disperse 10 parts of poly-p-phenylenediamine in 30 parts of 3-heptanol, stir in water at 20°C for 1 hour, then add 5 parts of glycerol dendritic polyether and 55 parts of kerosene, and stir at 120°C for reaction After 4 hours, the defoamer product was obtained after cooling.
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Abstract
The invention relates to a delay coking defoaming agent composition and a preparation method thereof. The defoaming agent is formed by compounding glycerinum branch type polyether, aromatic polyamine, high-carbon alcohol and solvents. The preparation method of the defoaming agent comprises the following steps: dispersing aromatic polyamine into high-carbon alcohol, stirring for 1-3 hours in water bath of 10-30 DEG C, adding glycerinum branch type polyether and a solvent, stirring and reacting for 1-5 hours at 100-150DEG C, and cooling to obtain the defoaming agent product. According to silicon-free delay coking defoaming agent has good antifoaming performance at 400-500DEG C; and the delay coking defoaming agent composition also can maintain the good antifoaming performance and stability during a high-temperature delay 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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IPC IPC(8): B01D19/04
Inventor 王鑫刘纾言孙鹏
Owner CHINA PETROLEUM & CHEM CORP