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Additive for suppressing and delaying foam generation in coking reaction tower and its prepn process

A technology of delayed coking and additives, applied in cracking, non-catalytic thermal cracking, petroleum industry, etc., can solve problems such as hydrofining process hazards, shorten catalyst life, catalyst deactivation, etc., to prolong coking and clogging, suppress and The effect of eliminating foam formation and prolonging the coking time

Inactive Publication Date: 2007-10-03
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, it is felt that the silicon-containing defoamer will bring harm to the downstream hydrofining process, such as silicon will be deposited on the refined catalyst, resulting in catalyst deactivation, shortening the life of the catalyst, and generating a large amount of deposits during the hydrogenation process. far from ideal

Method used

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  • Additive for suppressing and delaying foam generation in coking reaction tower and its prepn process

Examples

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Effect test

example 1

[0021] Example 1. Take 40 grams of block polyether with a molecular weight of 15000, 30 grams of isooctanol, and 30 grams of 50% aqueous ethanol solution, add them to a 250 ml glass flask, and stir with a magnetic stirrer for 1 hour at room temperature.

[0022] The above-mentioned block polyether has a hydroxyl value of 6.5-9.0, a pH of 11-13, and a cloud point of 73-73°C. Isooctanol is an analytically pure reagent.

example 2

[0023] Example 2. Take 50 grams of block polyether with a molecular weight of 15000, 20 grams of isooctanol, and 20 grams of 50% aqueous ethanol solution, add them to a 250 ml glass flask, and stir with a magnetic stirrer for 1 hour at room temperature.

[0024] Example 3: Take 35 grams of block polyether with a molecular weight of 15000, 35 grams of isooctanol, and 30 grams of 50% aqueous ethanol solution, add them to a 250 ml glass flask, and stir with a magnetic stirrer for 1 hour at room temperature.

[0025] Example 4: Take 30 grams of block polyether with a molecular weight of 15000, 40 grams of isooctanol, and 40 grams of 50% aqueous ethanol solution, add them to a 250 ml glass flask, and stir with a magnetic stirrer for 1 hour at room temperature.

[0026] Example 5: Take 35 grams of block polyether with a molecular weight of 15000, 25 grams of isooctanol, and 40 grams of 50% aqueous ethanol solution, add them to a 250 ml glass flask, and stir with a magnetic stirrer fo...

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Abstract

The present invention is additive for suppressing and delaying foam generation in coking reaction tower and its preparation process, and relates to oil refining additive technology. The additive is prepared through compounding high molecular weight block polyether 30-50 wt%, fatty alcohol 20-40 wt% and solvent 20-40 wt%, where, the high molecular weight block polyether is block copolymer of ethylene glycol, epoxy ethane and epoxy propane of molecular weight 10,000-20,000, and the fatty alcohol is isocotanol or 3-enanthol, and the solvent is water solution of alcohol. The preparation process includes the first feeding solvent into reaction kettle and heating slowly to 40-60 deg.c, adding block polyether and fatty alcohol in the ratio via stirring to react for 1-2 hr, cooling and filtering off solid impurity to obtain the product. The additive can suppress and delay foam generation in coking reaction tower effectively.

Description

technical field [0001] The invention relates to an oil refining process additive, in particular to an additive for suppressing foam generation in a delayed coking reaction tower and a preparation method thereof. Background technique [0002] The raw material residue of delayed coking contains natural surfactants, which cause a certain height of foam layer in the coking reaction tower. Under the operating conditions, the stability of the foam is very high, and the coking reaction tower has many adverse effects in production. : Often due to entrainment of mist caused by foam, the pipeline from the coking tower to the fractionating tower is coked or even blocked, and regular decoking is required; often because the foam layer occupies the effective space in the coking tower, the processing capacity of the coking tower is reduced, and the equipment Utilization rate is reduced; Also have product coke because contain bubble, its quality index such as its mechanical strength and ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G9/16C08L71/00C08K5/05
Inventor 刘公召
Owner SHENYANG POLYTECHNIC UNIV
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