Preparation method of high base number lubricating oil metal cleaning dispersant

Abstract

The invention relates to a preparation method of high base number lubricating oil metal cleaning dispersant. 100 parts by weight of naphthenic acid or petroleum sulfoacid or mahogany petroleum sulfonate, 70 parts-300 parts by weight of dimethylbenzene, 18 parts-50 parts by weight of metallic oxide or hydroxide and 3 parts-50 parts by weight of carbinol are mixed, heated to the temperature by 20 DEG C-60 DEG C and added with 1 part-45 parts by weight of accelerant after neutralization reaction with 0.5 hour-2 hours. The reaction temperature is 136 DEG C-173 DEG C, 30 parts-100parts by weight of carbon dioxide are imported, the carbonation reaction is carried out in 0.5 hour-1.5 hours, when the reaction pressure is 0.15 Mpa-1.0 Mpa, the carbon dioxide is stopped to importing. The product of the high base number lubricating oil metal cleaning dispersant is obtained after flashing dealcoholized water, centrifuging and deslagging and clear liquid escaping solvent.

Description

technical field

[0001] The invention relates to a preparation method of a lubricating oil metal detergent and dispersant, in particular to a preparation method of a high alkali value lubricating oil detergent and dispersant. Background technique

[0002] Naphthenate and sulfonate metal detergents and dispersants are the main additives for internal combustion engine oils. They have the characteristics of high base number, good rust resistance, and strong acid neutralization ability. They are mainly used to prepare medium and high-grade internal combustion engine oils. At present, neutralization reaction, carbonation reaction and phase inversion are commonly used in the preparation of metal detergents and dispersants for lubricating oils with high alkalinity at home and abroad. In the traditional preparation method, due to the influence of equipment and accelerator effect, the required neutralization and carbonation reaction time is long, the efficiency is low, the consumption...

Examples

Embodiment 1

[0016] 100 gram average molecular weight is 300, concentration is 35% naphthenic acid, 130 gram dimethylbenzene, 25 gram calcium oxide, 22 gram methyl alcohol in the reactor that has stirrer, heater, condenser and gas inlet pipe, drop into, Turn on the stirring to make the materials fully mixed, heat to the material temperature of about 45°C, and add 35 grams of ammonia water after 1.5 hours of neutralization reaction. Maintain material temperature subsequently to be 150 ℃, be that the carbon dioxide of 99.0% is passed in the reactor with flow rate 150 milliliters / min, carry out carbonation reaction 1.5 hours under airtight condition, the pressure in the reactor is 0.7MPa at this moment, stop Introduce carbon dioxide, unload the crude product from the reaction kettle to obtain a crude product containing a metal detergent and dispersant for lubricating oil, and dealcoholize the water at a vacuum degree of 0.050MPa and a temperature of 60-150°C. The azeotrope of dealcoholized wat...

Embodiment 2

[0018] 100 grams of petroleum sulfonic acid, 90 grams of xylene, 30 grams of calcium hydroxide, and 30 grams of methyl alcohol are 500 in average molecular weight and 39% in concentration in a reaction kettle with stirrer, heater, condenser and gas inlet pipe. , start stirring to fully mix the materials, heat the materials to a temperature of about 40° C., and add 15 grams of 1,4-butylene diamine after neutralizing for 0.5 hours. Maintain material temperature subsequently to be 165 ℃, be that the carbon dioxide of 99.2% is passed in the reactor with flow rate 110 milliliters / min, carry out carbonation reaction 1.0 hour under airtight condition, the pressure in the reactor is 0.9MPa at this moment, stop Introduce carbon dioxide, unload the crude product from the reaction kettle to obtain a crude product containing a metal detergent and dispersant for lubricating oil, and dealcoholize the water at a vacuum degree of 0.070MPa and a temperature of 60-150°C. The azeotrope of dealcoh...

Embodiment 3

[0020] 100 gram average molecular weight is 400, concentration is 40% naphthenic acid, 80 gram dimethylbenzene, 22 gram calcium oxide, 18 gram methyl alcohol in the reactor that has stirrer, heater, condenser and gas inlet pipe, drop into, Turn on the stirring to mix the materials thoroughly, heat the materials to a temperature of about 35°C, and add 45 grams of ethylenediamine after neutralizing for 1.0 hour. Maintain material temperature subsequently to be 173 ℃, be that the carbon dioxide of 99.2% is passed in the reactor with flow rate 160 milliliters / min, carry out carbonation reaction 0.5 hour under airtight condition, this moment, the pressure in the reactor is 1.0MPa, stop Introduce carbon dioxide, unload the crude product from the reaction kettle to obtain a crude product containing a metal detergent and dispersant for lubricating oil, and dealcoholize the water at a vacuum degree of 0.075MPa and a temperature of 60-150°C. The azeotrope of dealcoholized water is The p...

technical field

[0001] The invention relates to a preparation method of a lubricating oil metal detergent and dispersant, in particular to a preparation method of a high alkali value lubricating oil detergent and dispersant. Background technique

[0002] Naphthenate and sulfonate metal detergents and dispersants are the main additives for internal combustion engine oils. They have the characteristics of high base number, good rust resistance, and strong acid neutralization ability. They are mainly used to prepare medium and high-grade internal combustion engine oils. At present, neutralization reaction, carbonation reaction and phase inversion are commonly used in the preparation of metal detergents and dispersants for lubricating oils with high alkalinity at home and abroad. In the traditional preparation method, due to the influence of equipment and accelerator effect, the required neutralization and carbonation reaction time is long, the efficiency is low, the consumption...

Examples

Embodiment 1

[0016] 100 gram average molecular weight is 300, concentration is 35% naphthenic acid, 130 gram dimethylbenzene, 25 gram calcium oxide, 22 gram methyl alcohol in the reactor that has stirrer, heater, condenser and gas inlet pipe, drop into, Turn on the stirring to make the materials fully mixed, heat to the material temperature of about 45°C, and add 35 grams of ammonia water after 1.5 hours of neutralization reaction. Maintain material temperature subsequently to be 150 ℃, be that the carbon dioxide of 99.0% is passed in the reactor with flow rate 150 milliliters / min, carry out carbonation reaction 1.5 hours under airtight condition, the pressure in the reactor is 0.7MPa at this moment, stop Introduce carbon dioxide, unload the crude product from the reaction kettle to obtain a crude product containing a metal detergent and dispersant for lubricating oil, and dealcoholize the water at a vacuum degree of 0.050MPa and a temperature of 60-150°C. The azeotrope of dealcoholized wat...

Embodiment 2

[0018] 100 grams of petroleum sulfonic acid, 90 grams of xylene, 30 grams of calcium hydroxide, and 30 grams of methyl alcohol are 500 in average molecular weight and 39% in concentration in a reaction kettle with stirrer, heater, condenser and gas inlet pipe. , start stirring to fully mix the materials, heat the materials to a temperature of about 40° C., and add 15 grams of 1,4-butylene diamine after neutralizing for 0.5 hours. Maintain material temperature subsequently to be 165 ℃, be that the carbon dioxide of 99.2% is passed in the reactor with flow rate 110 milliliters / min, carry out carbonation reaction 1.0 hour under airtight condition, the pressure in the reactor is 0.9MPa at this moment, stop Introduce carbon dioxide, unload the crude product from the reaction kettle to obtain a crude product containing a metal detergent and dispersant for lubricating oil, and dealcoholize the water at a vacuum degree of 0.070MPa and a temperature of 60-150°C. The azeotrope of dealcoh...

Embodiment 3

[0020] 100 gram average molecular weight is 400, concentration is 40% naphthenic acid, 80 gram dimethylbenzene, 22 gram calcium oxide, 18 gram methyl alcohol in the reactor that has stirrer, heater, condenser and gas inlet pipe, drop into, Turn on the stirring to mix the materials thoroughly, heat the materials to a temperature of about 35°C, and add 45 grams of ethylenediamine after neutralizing for 1.0 hour. Maintain material temperature subsequently to be 173 ℃, be that the carbon dioxide of 99.2% is passed in the reactor with flow rate 160 milliliters / min, carry out carbonation reaction 0.5 hour under airtight condition, this moment, the pressure in the reactor is 1.0MPa, stop Introduce carbon dioxide, unload the crude product from the reaction kettle to obtain a crude product containing a metal detergent and dispersant for lubricating oil, and dealcoholize the water at a vacuum degree of 0.075MPa and a temperature of 60-150°C. The azeotrope of dealcoholized water is The p...