1. Introduction

The rich oil heater is a specialized device used for heating rich oil, widely applied in the coking industry's de-benzene process. With the increasing environmental protection requirements, traditional heating methods are gradually being replaced by more efficient and energy-saving technologies. The rich oil heater uses medium-pressure steam for heating, which not only improves the de-benzene efficiency but also eliminates the need for open flames, aligning with the green and low-carbon development direction of the modern coking industry.

2. Working Principle of the Rich Oil Heater

Rich oil is a mixture of aromatic hydrocarbons such as benzene, toluene, and xylene, produced during the cooling process of coke oven gas. In the de-benzene process, the rich oil needs to be heated to a certain temperature to volatilize the benzene compounds for further separation and recovery.

The rich oil heater completes the heating process mainly through the following steps:

• Heat Source Supply: Medium-pressure steam is used as the heat source, flowing from bottom to top.
• Heat Exchange Process: The rich oil flows from top to bottom, exchanging heat with the steam, gradually raising the temperature of the rich oil.
• De-benzene Process: The benzene compounds in the rich oil volatilize at high temperatures and enter the subsequent separation system.
• Circulation and Control: An automated control system precisely adjusts the heating temperature to ensure the stability of the de-benzene process.

3. Advantages of the Rich Oil Heater

• Improved Heating Efficiency: The steam heat exchange method is uniform and efficient, allowing the rich oil to reach the required temperature in a short time.
• Reduced Energy Consumption: Compared to traditional open-flame heating methods, steam heating reduces energy loss and improves heat utilization.
• Reduced Environmental Pollution: The avoidance of open-flame combustion eliminates smoke emission problems, complying with environmental protection policies.
• High Safety: The closed heating system reduces the risks of explosions and leaks, enhancing production safety.
• Low Maintenance Costs: The optimized equipment structure reduces coking and carbon buildup, extending the equipment's service life.

4. Conclusion

As a key device in the coking industry's de-benzene process, the rich oil heater, with its high efficiency, safety, and environmental protection features, has gradually become an important trend in the industry's development. With continuous technological advancements and the promotion of environmental policies, the rich oil heater will play an increasingly important role in the coking industry, providing strong support for the sustainable development of enterprises.