■ Product Overview

In the process of ethylene production, the ethylene cracking furnace, as the core equipment, consumes more than half of the energy here. Due to the high temperature environment in which the cracking furnace operates, secondary reactions such as polymerization and condensation associated with hydrocarbon cracking reactions, as well as the catalysis of metal on the furnace wall and free radical reactions in the material, make the furnace wall prone to coking. Coking not only increases the thermal resistance of the tube wall and reduces the heat transfer coefficient, leading to an increase in wall temperature and local overheating, but also reduces the inner diameter of the furnace tube, increases the pressure drop of the liquid, decreases the processing capacity, lowers the ethylene yield, corrodes the furnace tube, reduces the mechanical properties and service life of the furnace tube, and increases the production cost of ethylene.

This ethylene cracking coking inhibitor is specially developed to solve the above-mentioned coking problems. Through a unique formula and mechanism of action, it effectively inhibits coking generation and ensures the efficient and stable operation of ethylene production facilities.

■ Product Features

Efficient inhibition of coking: It can significantly reduce the coking rate of the cracking furnace tube wall, decrease the coking amount, prolong the operating cycle of the cracking furnace, and reduce the frequency of coke cleaning.

Improve production efficiency: Helps to improve ethylene yield and raw material utilization, reduce the decrease in processing capacity caused by coking, and enhance overall production efficiency.

Protecting furnace tubes: It can reduce the corrosion and carburizing phenomenon of furnace tubes, extend the service life of furnace tubes, and reduce equipment maintenance costs.

Safety and Environmental Protection: The product ingredients are safe, will not produce harmful by-products during use, meets environmental requirements, and is friendly to operators and the environment.

Strong compatibility: Can be well compatible with various ethylene cracking raw materials and process conditions, with a wide range of applications.

■ Mechanism of action

This coking inhibitor is a multi-component composite product, and its principle of action is mainly based on the following aspects:

Passivation of metal surfaces: At high temperatures, certain components in the inhibitor will react with the metal on the wall of the cracking furnace (such as Ni, etc.) to form sulfide metal, passivating the metal surface and inhibiting the catalytic coking process.

Changing the Free Radical Reaction Process: The HS * free radicals generated by inhibitors can change the original free radical reaction pathway inside the furnace tube, inhibit the free radical coking process, and reduce the generation of coke.

Clearing effect: Not only can it suppress coking, but it can also change the structure of the original coking layer inside the furnace wall, making it easier to detach and achieving a certain coke cleaning effect.

Protect the inner wall of the furnace tube: S protective film is formed on the inner wall of the furnace tube to prevent the generation and adhesion of coke, while also preventing corrosion of the inner wall of the furnace tube.