Operating pressure of the gas desulfurization tower

In the fertilizer industry, the desulfurization pressure for semi-water gas is at atmospheric pressure, around 300–400 mmHg; whereas for shift gas desulfurization, it is generally between 0.8 and 4.0 MPa. The resistance loss depends on factors such as the packing specifications, packing height, and gas-liquid ratio. Generally, in the early stages of operation, the pressure loss in a packed tower is not very high; the longer it operates, the more severe the blockage becomes, and thus the greater the pressure loss.

Let me share our practical experience with the original poster: the pressure inside the tower is 4 kPa, and the switching pressure is 18 kilograms

Packed tower, 5-20 kp. 8 kilograms

Desulfurization pressure of the transformed gas: 32 kilograms

In the case of a crude desulfurization tower used for wet desulfurization, its operating pressure is determined based on the volume of the feed gas and the requirements of the devices before and after it； It turns out that the operating pressure of our desulfurization tower was 30–40 Kpa; later, technical upgrades were carried out to expand the system and increase the volume of feed gas. The mechanical equipment remained largely unchanged, with only minor modifications made ； This increases the pressure of the fan at the front, resulting in an operating pressure of 50–60 Kpa for the desulfurization tower.

This post was last edited by fengying_08 on 2009-5-15 at 13:27. Ours is 25–30 KPa, with a pressure loss of around 2 KPa

The operating pressure of the desulfurization tower is 0.049 MPa; in actual production, it is required that there be minimal resistance as the gas passes through

Wavy plate packing, gas pressure of around 5000 Pa, column resistance less than 1200 Pa

1. Wet tannin desulfurization: 20kpa； 2. Modified ADA method: 30-55kpa ； 3. Vacuum potassium carbonate desulfurization: 10-15 kPa ；

Wet tannin desulfurization: 20kpa

The operating pressure of a gas desulfurization tower, in the case of a rough desulfurization tower using wet desulfurization, is determined based on the volume of the feed gas and the requirements of the devices upstream and downstream； 1\ Low-temperature methanol washing unit: 2.0 to 3.0 MPa 2. Wet tannin desulfurization: 20 kPa ； 3. Modified ADA method: 30-55 kPa ； 4. Vacuum potassium carbonate desulfurization: 10-15 kPa ； It mainly depends on the desulfurization method used. In the fertilizer industry, the desulfurization pressure for semi-water gas is at atmospheric pressure, around 300–400 mmHg; whereas for shift gas desulfurization, the pressure is generally between 0.8 and 4.0 MPa. Resistance loss situation

The operating pressure of a gas desulfurization tower, in the case of a rough desulfurization tower using wet desulfurization, is determined based on the volume of the feed gas and the requirements of the devices upstream and downstream； 1\ Low-temperature methanol washing unit: 2.0 to 3.0 MPa 2. Wet tannin desulfurization: 20 kPa ； 3. Modified ADA method: 30-55 kPa ； 4. Vacuum potassium carbonate desulfurization: 10-15 kPa ； I tend to agree with this view. What the original poster is referring to is likely the desulfurization process in low-temperature methanol washing units. The desulfurization agents used as packing materials here are not renewable, and their lifespan depends on actual operating conditions; it’s usually around 10 years. At the time of initial operation, the pressure difference is very small, but it varies over time as the unit operates under different conditions.

In the ammonia synthesis process, packed towers are commonly used for desulfurization of semi-water gas and gas after shift reaction. Semi-desulfurization is carried out at 300–400 mmHg, while complete desulfurization takes place at 0.8–0.85 MPa. The level of resistance is related to the tower diameter, gas flow rate, and pipe diameter. If process control is not strict during production, blockages in the tower can occur quickly, leading to an increase in resistance.

Sekexol is generally around 3.8MP