Constant-pressure operation with maximum gas recovery is the most suitable for the coking dry gas desulfurization tower (when the dry gas volume is 7,000 standard cubic meters)
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Constant-pressure operation with maximum gas recovery is the most suitable for the coking dry gas desulfurization tower (when the dry gas volume is 7,000 standard cubic meters)
Our target is 0.60----0.93 megapascals!
It mainly depends on the pressure required for the desulfurized dry gas to enter the downstream equipment, such as the fuel system； At the same time, the pressure of the upstream adsorption and desorption systems as well as the head of the amine-poor solution feed pump are taken into consideration. Typically, the pressure in the coking dry gas desulfurization tower is between 0.7 and 1.2 Mpa. Generally, under identical other conditions, the higher the pressure, the lower the amount of amine alcohol circulation required; meanwhile, the likelihood of foaming in the amine solution increases, and obviously, the cost of the equipment also rises.
The pressure in the dry gas desulfurization tower is between 0.7 and 1.2 Mpa
Our plant maintains a pressure of 1.0 MPa, while the pressure of the fuel gas is kept at 0.7 MPa...
The constant pressure in the coking dry gas desulfurization tower is primarily determined by the following factors: 1. The outlet pressure of the coking compressor, or the pressure of the dry gas after absorption stabilization； 2. Setting the pressure relief valve value for the dry gas desulfurization tower. 3. Desulfurization capacity of the desulfurized lean amine (flow rate, temperature, concentration, etc.) ； High pressure and low temperature are favorable for the absorption of hydrogen sulfide. Under other permissible conditions, the pressure setting principle is generally 0.1 MAP lower than that of the safety valve. The higher, the better the desulfurization effect.