How to implement urea waste heat power generation
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I heard that the urea production plant of Anhui Haoyuan Company uses low-pressure energy sources such as waste gas and waste heat to generate power from this heat. The maximum power generation per hour can reach 1,000 kilowatt-hours. The operation of this project not only enables the effective recovery and utilization of waste heat, thereby reducing the overall energy consumption of the system, but it also plays a significant role in helping the company cope with rising electricity prices for fertilizers and reduce production costs. Does anyone know how it is implemented in practice?
In principle, all the low-temperature waste heat generated by urea plants can be used to generate electricity; for example, the waste heat from high-pressure water can be utilized for power generation through a Rankine cycle, and several companies in China are conducting research and implementing such technologies. To save electricity, there is also technology in China that uses residual pressure to drive pumps. Techniques such as using a stripping tower to reduce the pressure of urine to the residual pressure level in the distillation tower, along with high-pressure ammonium pump systems, can be employed. The aforementioned technology currently has limited performance, but it is definitely in the direction of energy savings.
The liquid coming out of the stripping tower contains usable energy, but this environment is corrosive; to date, no one has been known to make use of it. Search
Corrosion is addressed through the material; it’s a matter of direction at the nodes, and one needs to be willing to take risks.
I have an inorganic chemical engineering technology that enables the large-scale utilization of waste heat; it is safe and pollution-free. The investment required ranges from 1 million to 100 million. With an investment of 20 million, annual profits can reach 80 million, while profits can exceed 100 million if there is available waste heat. Those interested should contact myben@126.com