Practical Exercise on Purification Technology Version [026]
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Why is the methanol washing tower divided into an upper column and a lower column, and what is the theoretical basis for this? Answer: The main basis is the selectivity of solvent absorption, as hydrogen sulfide has a higher solubility in methanol than carbon dioxide. This allows hydrogen sulfide to be absorbed in the lower column. The heat of dissolution released during the absorption of hydrogen sulfide and thiocarbonic acid in that column is compensated by the desorption heat of carbon dioxide in methanol, thereby preventing an increase in temperature in the desulfurization section. It facilitates the absorption of hydrogen sulfide and thiooxycarbene. Coalification Region Purification Technology Edition – 2017 Coal Chemical Industry “My Technical Upgrades” Contest (Generous Prizes Available) http://bbs.hcbbs.com/thread-1786290-1-1.html Registration for Chemical Engineers – Experience Sharing Event “Learning from Others’ Experiences” http://bbs.hcbbs.com/thread-1808158-1-1.html
The main basis is the selectivity of solvent absorption, as hydrogen sulfide has a higher solubility in methanol than carbon dioxide; this allows hydrogen sulfide to be absorbed in the lower column. The heat of dissolution released during the absorption of hydrogen sulfide and thiocarbonic acid in that column is compensated by the desorption heat of carbon dioxide in methanol, thereby preventing an increase in temperature in the desulfurization section. It facilitates the absorption of hydrogen sulfide and thiooxycarbene.
Based on the selectivity of absorption by the methanol solvent, hydrogen sulfide has a higher solubility in methanol than carbon dioxide; therefore, hydrogen sulfide is absorbed in the lower column.
Based on the selectivity of absorption by the methanol solvent, hydrogen sulfide has a higher solubility in methanol than carbon dioxide, and therefore hydrogen sulfide is absorbed in the lower column.
The main basis is the selectivity of solvent absorption, as hydrogen sulfide has a higher solubility in methanol than carbon dioxide; this allows hydrogen sulfide to be absorbed in the lower column. The heat of dissolution released during the absorption of hydrogen sulfide and thiocarbonic acid in that column is compensated by the desorption heat of carbon dioxide in methanol, thereby preventing an increase in temperature in the desulfurization section. It facilitates the absorption of hydrogen sulfide and thiooxycarbene.
The main basis is the selectivity of solvent absorption, as hydrogen sulfide has a higher solubility in methanol than carbon dioxide; this allows hydrogen sulfide to be absorbed in the lower column. The heat of dissolution released during the absorption of hydrogen sulfide and thiocarbonic acid in that column is compensated by the desorption heat of carbon dioxide in methanol, thereby preventing an increase in temperature in the desulfurization section. It facilitates the absorption of hydrogen sulfide and thiooxycarbene.
The main basis is the selectivity of solvent absorption, as hydrogen sulfide has a higher solubility in methanol than carbon dioxide; this allows hydrogen sulfide to be absorbed in the lower column. The heat of dissolution released during the absorption of hydrogen sulfide and thiocarbonic acid in that column is compensated by the desorption heat of carbon dioxide in methanol, thereby preventing an increase in temperature in the desulfurization section. It facilitates the absorption of hydrogen sulfide and thiooxycarbene.
Based on the selectivity of absorption by the methanol solvent, hydrogen sulfide has a higher solubility in methanol than carbon dioxide, and therefore hydrogen sulfide is absorbed in the lower column.
The main basis is the selectivity of solvent absorption, as hydrogen sulfide has a higher solubility in methanol than carbon dioxide; this allows hydrogen sulfide to be absorbed in the lower column. The heat of dissolution released during the absorption of hydrogen sulfide and thiocarbonic acid in that column is compensated by the desorption heat of carbon dioxide in methanol, thereby preventing an increase in temperature in the desulfurization section. It facilitates the absorption of hydrogen sulfide and thiooxycarbene.
The main basis is the selectivity of solvent absorption, as hydrogen sulfide has a higher solubility in methanol than carbon dioxide; this allows hydrogen sulfide to be absorbed in the lower column. The heat of dissolution released during the absorption of hydrogen sulfide and thiocarbonic acid in that column is compensated by the desorption heat of carbon dioxide in methanol, thereby preventing an increase in temperature in the desulfurization section. It facilitates the absorption of hydrogen sulfide and thiooxycarbene.
Hydrogen sulfide and carbon dioxide have different dissolution rates in methanol