A kind of inhibitor and application thereof for inhibiting the coking of petroleum sulfonate sulfonation reaction

A technology of petroleum sulfonate and sulfonation reaction, applied in the preparation of sulfonate, sulfonic acid, organic chemistry, etc., can solve the problem of product stratification and reduced interfacial activity, irritating odor, and stable storage of petroleum sulfonate It can alleviate the problems such as the deterioration of the product interface, reduce the activity of the product interface, reduce the amount of coking, and prolong the continuous reaction cycle.

Active Publication Date: 2021-11-09
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Adding a small amount of acetic acid can alleviate the coking of raw oil sulfonation, but it has a pungent smell, and the storage stability of petroleum sulfonate produced by adding acetic acid becomes poor, and after a period of storage, product stratification and interface activity decrease The problem

Method used

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  • A kind of inhibitor and application thereof for inhibiting the coking of petroleum sulfonate sulfonation reaction
  • A kind of inhibitor and application thereof for inhibiting the coking of petroleum sulfonate sulfonation reaction
  • A kind of inhibitor and application thereof for inhibiting the coking of petroleum sulfonate sulfonation reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a method for preparing petroleum sulfonate using a coking inhibitor, comprising the following steps:

[0039] 1) Pretreatment of raw oil:

[0040] Put 50g of raw material oil (minus second-line distillate oil) into a 250mL four-necked bottle, add 0.5g of coking inhibitor CS01 (maleic anhydride: methyl isobutyl ketone: sulfolane = 70%: 10%: 20%), 60 ° C Stir at 200r / min for 10min in a water bath;

[0041] 2) Sulfonation:

[0042] Weigh 18g of chlorosulfonic acid in the dropping funnel, drop it into the four-necked bottle slowly at a uniform speed, open one mouth of the four-necked bottle to discharge the hydrogen chloride tail gas, and drop the chlorosulfonic acid in 40 minutes. After completion, continue to keep warm in a 60°C water bath for 80 minutes;

[0043] 3) Hydrolysis:

[0044] Weigh 5g of deionized water into the four-necked bottle slowly dropwise, and keep warm in a water bath at 45°C for 30min;

[0045] 4) Neutralization:

[004...

Embodiment 2

[0048] 1) Pretreatment of raw oil:

[0049]Put 50g of raw material oil into a 250mL four-necked bottle, add 0.5g of coking inhibitor CS02 (methyl isobutyl ketone: sulfolane: dioxane = 30%: 30%: 40%), 200r / min in a water bath at 60°C Stir for 10 minutes;

[0050] 2) Sulfonation:

[0051] Weigh 18g of chlorosulfonic acid in the dropping funnel, drop it into the four-necked bottle slowly at a uniform speed, open one mouth of the four-necked bottle to discharge the hydrogen chloride tail gas, and drop the chlorosulfonic acid in 40 minutes. After completion, continue to keep warm in a 60°C water bath for 80 minutes;

[0052] 3) Hydrolysis:

[0053] Weigh 5g of deionized water into the four-necked bottle slowly dropwise, and keep warm in a water bath at 45°C for 30min;

[0054] 4) Neutralization:

[0055] Slowly add 5wt% NaOH aqueous solution dropwise, control the temperature of the system not to exceed 60°C, take a small amount of reactant and dilute it with water, and then ch...

Embodiment 3

[0057] 1) Pretreatment of raw oil:

[0058] Put 50g of raw material oil into a 250mL four-necked bottle, add 0.1g of coking inhibitor CS03 (sulfolane: maleic anhydride: dioxane = 50%: 30%: 20%), stir in a 60°C water bath at 200r / min for 10min;

[0059] 2) Sulfonation:

[0060] Weigh 18g of chlorosulfonic acid in the dropping funnel, drop it into the four-necked bottle slowly at a uniform speed, open one mouth of the four-necked bottle to discharge the hydrogen chloride tail gas, and drop the chlorosulfonic acid in 40 minutes. After completion, continue to keep warm in a 60°C water bath for 80 minutes;

[0061] 3) Hydrolysis:

[0062] Weigh 5g of deionized water into the four-necked bottle slowly dropwise, and keep warm in a water bath at 45°C for 30min;

[0063] 4) Neutralization:

[0064] Slowly add 5wt% NaOH aqueous solution dropwise, control the temperature of the system not to exceed 60°C, take a small amount of reactant and dilute it with water, and then check the pH ...

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Abstract

The invention provides an inhibitor for inhibiting the coking of petroleum sulfonate sulfonation reaction and application thereof. Wherein, the coking inhibitor includes organic oxygen-containing compounds with a molecular weight below 150, specifically, the organic oxygen-containing compounds include one or more of maleic anhydride, methyl isobutyl ketone, sulfolane and dioxane . Compared with the existing sulfonation process, adding the coking inhibitor of the present invention can reduce the amount of coking by more than 80%, which can effectively alleviate the decrease in product interface activity caused by excessive coking amount; meanwhile, it can prolong the sulfonation process The continuous reaction cycle reduces the energy consumption and production efficiency reduction caused by shutdown maintenance.

Description

technical field [0001] The invention relates to the technical field of surfactants. More specifically, it relates to the production formula and production process of petroleum sulfonate. Background technique [0002] Petroleum sulfonate is a kind of anionic surfactant, which is mainly used for tertiary oil recovery. It is cheap and has high interfacial activity. It is widely used in major oil fields in my country, such as Daqing Oilfield, Shengli Oilfield and Xinjiang Oilfield. Surfactants for oils. [0003] Petroleum sulfonate is made of petroleum and its fractions as raw material oil, sulfonated by sulfonating agent, and then neutralized with alkali. Sulfonating agents include gaseous SO 3 , oleum, chlorosulfonic acid and concentrated sulfuric acid, the current production process mainly uses gaseous SO 3 It is a sulfonating agent, because of its high activity, rapid reaction, few by-products, no waste acid, and no corrosion of equipment. The sulfonation reaction device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/62C07C303/32
CPCC07C303/06C07C303/08C07C303/32C07C309/62
Inventor 张声威彭勃
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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