Low-temperature heat utilization in atmospheric-pressure systems
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In 2009, our plant utilized the waste heat from the top of the atmospheric pressure tower in its atmospheric pressure units to supply heat throughout the plant as well as to heat the coils in the tank area, thereby replacing steam and reducing fuel consumption and the load on the boilers, which resulted in good economic benefits
Could you explain in more detail? Is there really so much excess heat at the top of an atmospheric pressure tower?
As the seasons change, when there isn’t enough fuel oil available in winter, we generally introduce the non-condensable gases from the initial and normal vent streams into the atmospheric pressure furnace; this way, the compressor’s load is reduced and it can be shut down Although it cannot be considered self-sufficient, it alleviates the issue of high energy consumption throughout the plant to a certain extent.
The waste heat from the atmospheric pressure tower top is used for heating – it’s really ingenious to figure out how to do that.
My company does the same thing, using the residual heat to heat the office building.
Reply to 5# sirsunny: You’re so talented! I work in the field of atmospheric pressure systems, and I really don’t understand how it’s possible to achieve such low-temperature heat utilization Could you explain it in detail?
Low-temperature heat refers to low-grade thermal energy. Our plant is equipped with a low-temperature heat recovery station, which uses water as a carrier (heat transfer fluid) to establish a heat combined cycle in the heating and heat utilization systems; this cycle involves heat exchange through low-temperature heat exchangers, thereby integrating the processes in gas separation, catalytic units, and atmospheric-pressure units. The excess thermal energy can also be utilized for civilian purposes, such as heating for users in winter or for heating the equipment itself.
Firstly, the corrosion of oil and gas at the top of the tower is extremely severe; is the cost of using materials for the water coolers high?； Is safety guaranteed?
It is a separate system, primarily used for recycling the waste heat from the newly grown top lines