Dual-circulation absorption tower
An absorption tower and double-circuit technology, which is applied in the field of absorption tower equipment for efficiently removing pollutants in coal-fired flue gas, can solve the problems of increasing circulating pumps, increasing operating costs, and high use costs, and achieves optimal operating environment and good desulfurization effect , the effect of high desulfurization efficiency
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[0021] Example 1
[0022] See attached image. The dual-circuit absorption tower in this embodiment includes: a pre-absorption tower 200 and a main absorption tower 100, and the two types of absorption towers are arranged in series on the flue gas passage. The main absorption tower 100 of this embodiment is a counter-flow, that is, the flue gas direction P is through the spray area from bottom to top, and the front absorption tower 200 adopts a downstream flow, that is, the flue gas direction P is from top to bottom. spray area.
[0023] The pre-absorption tower 200 includes a second flue gas inlet 201, a second slurry pool 202, a second spray zone 203 containing two spray layers, a second flue gas outlet 204, a second slurry circulating pump 205, and a second slurry Stirrer 206 and forced oxidation device 207, wherein the second slurry pool 202 is located at the bottom of the pre-absorption tower, the gas-liquid contact area is located above the second slurry tank 202, and t...
Example Embodiment
[0025] Example 2
[0026] see figure 2 . The difference between the dual-circuit absorption tower in this embodiment and Embodiment 1 is only that the main absorption tower and the front absorption tower in Embodiment 1 both adopt the operation mode of countercurrent spraying, that is, the flue gas direction P is from bottom to top. Overspray area 203. Compared with the double-loop absorption tower in Embodiment 1, the double-circuit absorption tower of this embodiment can make the gas-liquid contact more sufficient, and under the same other conditions, the desulfurization efficiency can be further improved.
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