Are there any good ways to increase the temperature for electrodialysis desalination at atmospheric pressure?
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We adjust the temperature for power generation and desalination in our device. It is achieved by using the bypass of the heat exchanger for crude residue and bottom oil. Sacrifice some fuel gas at the point of use. The effect isn’t significant; quite a few have been used. The temperature rises by one or two degrees. Are there more effective corrective measures? For example, adding a heat exchange unit or something similar.
If it cannot be raised: First, then consider whether the heat exchanger is fouled and needs cleaning. Second, given a reasonable heat exchange design, consider whether there have been any changes in the process compared to before, such as the raw materials. Third, the current heat exchange network has exceeded its design capacity; adding more heat exchangers or optimizing the heat exchange network can be considered as solutions
The temperature for electrodesorption is closely related to the type of crude oil being processed. If feed changes are ruled out, it is necessary to examine each heat exchanger individually to assess its heat transfer efficiency. If there are no issues with the heat transfer efficiency, then there is a temperature problem within the heat exchange network; in such cases, modifications to the equipment and the heat exchange system itself are required.
What was said on the 2nd floor is quite comprehensive. I think it would also be possible to use external low-temperature heat to exchange heat with the crude oil, thereby increasing its temperature and thus raising the temperature for electrodesorption.