Multifunctional coking inhibitor for petroleum coking process

Abstract

The invention relates to a multifunctional anti-coking agent used in the petroleum coking process, which comprises (by weight percent) alkyl phthalate 40-60%, boron ashless dispersant 5-10%, assisting solvent 5-10%, and balancing high carbon alkyl. The agent has good anti-coking and high temperature inhibiting functions.

Description

technical field

[0001] The invention belongs to the field of chemical additives, and relates to a coking inhibitor, in particular to a coking inhibitor with multiple functions (trade name: GX-03C) used in the coking process of petroleum. Background technique

[0002] As we all know, in recent years, as the quality of crude oil has become heavier and worse, the fouling of equipment and pipelines in the process of petroleum coking has become increasingly serious. Scaling not only increases the energy consumption and reduces the processing capacity of refinery equipment, but also poses a great threat to the safe production of the equipment and affects its operation cycle.

[0003] In the modern oil refining industry, the coking process is still a very important way to increase the yield of light oil. It still occupies a very important position in the oil refining industry. At present, the heating furnaces of delayed coking units all have a serious tendency of coking and fouli...

Examples

Embodiment 1

[0015] Weigh 500 grams of dioctyl phthalate and add it to a stirring container. When the temperature rises to 60°C, slowly add 300 grams of octadecane that has been weighed. After the addition, continue to stir for more than 3 hours, add Weighed 100 grams of boronated ashless dispersant, add and keep the temperature at 60°C, continue to stir for more than half an hour after adding, add 100 grams of co-solvent, add and keep the temperature at 60°C , and keep mixing evenly, then cool to room temperature.

Embodiment 2

[0017] Weigh 450 grams of n-decyl phthalate, add it into a stirring container, and when the temperature rises to 60°C, slowly add 70 grams of co-solvent that has been weighed, continue to stir for more than 3 hours after adding, add Weigh 80 grams of borated ashless dispersant, add and keep the temperature at 60°C, continue to stir for more than half an hour after adding, add 400 grams of heptadecane that has been weighed, add and keep the temperature at 60°C , and keep mixing evenly, then cool to room temperature.

Embodiment 3

[0019] Weigh 550 grams of dimethyl phthalate and add it to a stirring container. When the temperature rises to 60 ° C, slowly add 100 grams of boronated ashless dispersant that has been weighed, and continue to stir for more than 3 hours after the addition is completed. Add 300 grams of eicosane that has been weighed, add and keep the temperature at 60°C, continue to stir for more than half an hour after the addition, add 50 grams of co-solvent that has been weighed, add and keep the temperature at 60°C, And keep mixing evenly, then cool to room temperature.

[0020] Due to the mutual promotion of coking and corrosion at high temperature parts, the combination of scale and corrosion inhibition can effectively prevent the formation of coke scale, alleviate the corrosion of high temperature parts of equipment, and improve the light oil yield in the process of petroleum coking Rate.

[0021] The multi-functional coking inhibitor GX-03C of the present invention has good dual func...

technical field

[0001] The invention belongs to the field of chemical additives, and relates to a coking inhibitor, in particular to a coking inhibitor with multiple functions (trade name: GX-03C) used in the coking process of petroleum. Background technique

[0002] As we all know, in recent years, as the quality of crude oil has become heavier and worse, the fouling of equipment and pipelines in the process of petroleum coking has become increasingly serious. Scaling not only increases the energy consumption and reduces the processing capacity of refinery equipment, but also poses a great threat to the safe production of the equipment and affects its operation cycle.

[0003] In the modern oil refining industry, the coking process is still a very important way to increase the yield of light oil. It still occupies a very important position in the oil refining industry. At present, the heating furnaces of delayed coking units all have a serious tendency of coking and fouli...

Examples

Embodiment 1

[0015] Weigh 500 grams of dioctyl phthalate and add it to a stirring container. When the temperature rises to 60°C, slowly add 300 grams of octadecane that has been weighed. After the addition, continue to stir for more than 3 hours, add Weighed 100 grams of boronated ashless dispersant, add and keep the temperature at 60°C, continue to stir for more than half an hour after adding, add 100 grams of co-solvent, add and keep the temperature at 60°C , and keep mixing evenly, then cool to room temperature.

Embodiment 2

[0017] Weigh 450 grams of n-decyl phthalate, add it into a stirring container, and when the temperature rises to 60°C, slowly add 70 grams of co-solvent that has been weighed, continue to stir for more than 3 hours after adding, add Weigh 80 grams of borated ashless dispersant, add and keep the temperature at 60°C, continue to stir for more than half an hour after adding, add 400 grams of heptadecane that has been weighed, add and keep the temperature at 60°C , and keep mixing evenly, then cool to room temperature.

Embodiment 3

[0019] Weigh 550 grams of dimethyl phthalate and add it to a stirring container. When the temperature rises to 60 ° C, slowly add 100 grams of boronated ashless dispersant that has been weighed, and continue to stir for more than 3 hours after the addition is completed. Add 300 grams of eicosane that has been weighed, add and keep the temperature at 60°C, continue to stir for more than half an hour after the addition, add 50 grams of co-solvent that has been weighed, add and keep the temperature at 60°C, And keep mixing evenly, then cool to room temperature.

[0020] Due to the mutual promotion of coking and corrosion at high temperature parts, the combination of scale and corrosion inhibition can effectively prevent the formation of coke scale, alleviate the corrosion of high temperature parts of equipment, and improve the light oil yield in the process of petroleum coking Rate.

[0021] The multi-functional coking inhibitor GX-03C of the present invention has good dual func...