How to improve the purity of recycled hydrogen in diesel hydrogenation
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Are there any other methods besides emission?
Personal thoughts: 1. Try to improve the separation efficiency between high-score and low-score containers； 2. Change the properties of the raw materials to reduce hydrogen consumption
Add online hydrogen purification equipment, such as membrane separation devices
You mean that it needs to be done on top of what already exists, and the solution is to address the issue at its source in order to reduce hydrogen consumption; however, such an approach is generally not feasible. The cost of addressing the issue at its source is likely to be much higher than the cost of replenishing hydrogen later on
1. Reduce the temperature of cold high-pressure gas separation as much as possible. 2. Decrease the degree of cracking of the feedstock within the reactor. 3. Lower the sulfur content in the recycled hydrogen after purification. 4. Improve the purity of the fresh hydrogen
Agree. It might be okay to increase the temperature of the hot high-pressure section by 3~5°C as well (provided that the temperature of the cold high-pressure section is kept as low as possible).
1. Go to the desulfurization and regeneration unit 2. Discharge waste hydrogen 3. Improve the purity of fresh hydrogen 4. Increase the amount of fresh hydrogen
This is a process without a hydrogen compressor, right?
1. Increase the amount of fresh hydrogen 2. Improve the purity of fresh hydrogen 3. Discharge waste hydrogen 4. Add a desulfurization and regeneration unit