The influence of temperature and pressure in the NHD desulfurization section
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In the NHD desulfurization process, the temperature and pressure of the shift gas； To what extent do the temperature and pressure of the NHD desulfurization lean stream affect the sulfur content in the desulfurized gas? Let’s discuss this together
In the H2S, COS, CO2----NHD solution system, when the partial pressures of these gases are below 1 MPA, the gas phase pressure and liquid phase concentration generally obey Henry’s law. Therefore, the process of NHD solvents absorbing H2S, COS, and CO2 exhibits typical physical absorption characteristics. The solubility of H2S, COS, and CO2 in the NHD solvent increases as pressure rises and temperature decreases; it is during these conditions that the absorption of H2S, COS, and CO2 takes place. When the system pressure decreases and the temperature rises, the gas in the solution is released, enabling the regeneration of the solution.
In the H2S, COS, CO2----NHD solution system, when the partial pressures of these gases are below 1 MPA, the gas phase pressure and liquid phase concentration generally obey Henry’s law. Therefore, the process of NHD solvents absorbing H2S, COS, and CO2 exhibits typical physical absorption characteristics. The solubility of H2S, COS, and CO2 in the NHD solvent increases as pressure rises and temperature decreases; it is during these conditions that the absorption of H2S, COS, and CO2 takes place. When the system pressure decreases and the temperature rises, the gas in the solution is released, enabling the regeneration of the solution.
We only use NHD for decarburization here; desulfurization has not been carried out yet. I’m not sure what the results are in the original post’s case