Two furnaces and one tower for desulfurization
Thread Content
Flue gas desulfurization with two furnaces and one tower has many differences compared to one furnace and one tower, such as whether a connecting flue is required Can a static pressure booster fan be used? There are many design-related issues, such as how to start another booster fan when one furnace is operating at full capacity; I hope everyone will engage in in-depth discussions on these topics. I believe that participation will definitely yield benefits.
Two furnaces and one tower can help reduce costs, but the prerequisite is that the two furnaces must start and stop simultaneously to maintain the gas velocity in the empty tower; otherwise, the designed effects will not be achieved. To achieve good desulfurization results, when starting a furnace, the desulfurized flue gas can be routed back to ensure an adequate flow rate of flue gas and an appropriate velocity in the tower.
When Fan 2# starts up, Fan 1# should operate at reduced load, with the load then being adjusted gradually.
Some plans have been developed, but I have not seen any examples of a two-furnace-one-tower setup. For dry processes, the biggest problem is that when one furnace stops operating, changes in flue gas flow rate and velocity can lead to bed collapse. When using recirculated flue gas, it is difficult to determine how to control and adjust these parameters. The impact on the wet process should be relatively small