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Defoaming agent composition and application of same in delayed coking

A composition and defoaming agent technology, applied in the field of oil refining aids, can solve the problems of slow penetration and diffusion, poor high temperature resistance, insufficient active components, etc. Effect

Active Publication Date: 2013-05-15
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: described defoamer is formulated by the raw material of following mass parts: degree of branching is 30 parts of hyperbranched polyethers of 0.2, 40 parts of octadecyl alcohol stearates, 25 parts of coking wax oils, 5 parts of isooctyl alcohol. The number average molecular weight of the hyperbranched polyether is 15,000. The above raw materials are mixed and stirred at 80°C for 2 hours, and the finished product is obtained after cooling.

Embodiment 2

[0021] Embodiment 2: described defoamer is formulated by the raw material of following mass parts: degree of branching is 40 parts of hyperbranched polyethers of 0.3, 15 parts of ethylenediamine bisstearamides, ethylenediamine monooleic acid amide 15 parts, 30 parts of coker wax oil. The number average molecular weight of the hyperbranched polyether is 20,000. The above raw materials are mixed and stirred at 100°C for 2 hours, and the finished product is obtained after cooling.

Embodiment 3

[0022] Embodiment 3: described defoamer is formulated by the raw material of following mass parts: degree of branching is 40 parts of hyperbranched polyethers of 0.4, 20 parts of octadecyl stearate, ethylenediamine bisstearate 15 parts of amide, 25 parts of hydrogenated diesel oil. The number average molecular weight of the hyperbranched polyether is 25,000. The above raw materials are mixed and stirred at 70°C for 2 hours, and the finished product is obtained after cooling.

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PUM

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Abstract

The invention relates to a defoaming agent composition and application of the same in delayed coking. A defoaming agent is prepared by compounding 30 to 50 parts by mass of hyperbranched polyether, 20 to 40 parts by mass of higher alcohol fatty acid ester or fatty acid amide and 20 to 30 parts by mass of a solvent. The defoaming agent provided by the invention does not contain silicon and has good dispersibility and a fast defoaming speed; when addition amount of the antifoaming agent is about 30 mu g / g, a defoaming rate is up to more than 90%; and the defoaming agent has powerful defoaming performance at a high temperature and can be used for defoaming of a coke chamber in delayed coking.

Description

technical field [0001] The invention relates to a defoamer composition and its application, in particular to a composite non-silicon defoamer composition for eliminating foam in a delayed coking coke tower, and belongs to the technical field of refining aids. Background technique [0002] Delayed coking is a thermal processing process for deep cracking of residual oil into coker dry gas, coker gasoline, coker diesel oil, coker gas oil and coke. 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 fractionation tower together with the coke oil gas, causing coking in the fractionation tow...

Claims

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Application Information

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IPC IPC(8): B01D19/04C10G9/00
Inventor 刘纾言王鑫孙国权赵起超李殿昭
Owner CHINA PETROLEUM & CHEM CORP
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