Desulfurization apparatus

Abstract

A desulfurization device includes: a tower body, a lower perforated plate, an upper perforated plate, a parallel plate, an upward spraying device, a demister, a downward spraying device, and an absorbent supply device. The lower and upper perforated plates are configured to adjust the airflow. The parallel plate is configured to absorb sulfides from the airflow. The upward and downward spraying devices spray an absorbent onto the parallel plate from bottom to top and from top to bottom, respectively. The absorbent supply device supplies the absorbent to the upward and downward spraying devices. By further incorporating an upward spraying device into the desulfurization device, the uniformity of absorbent coverage, gas-liquid contact efficiency, and sulfide absorption rate are improved without increasing the liquid-to-gas ratio.

Claims

1. A desulfurization device, comprising: a tower body having an internal space, an inlet end communicating with the internal space and located on a lower side, and an outlet end communicating with the internal space and located on an upper side; a lower perforated plate configured to adjust airflow and disposed in the internal space on the lower side adjacent to the inlet end; an upper perforated plate configured to adjust airflow and disposed in the internal space on the upper side adjacent to the outlet end; a parallel plate configured to absorb sulfides from the airflow and disposed in the internal space between the lower perforated plate and the upper perforated plate, the parallel plate comprising a plurality of absorber plates and a plurality of support portions, the plurality of absorber plates being spaced apart from each other and arranged in parallel to form a plurality of channels, each of the support portions connecting two adjacent absorber plates, wherein the plurality of channels extend perpendicularly to the surface of the parallel plate, and the plurality of channels allow airflow to pass through the parallel plate, such that sulfides in the airflow are absorbed by the plurality of absorber plates; An upward spraying device is disposed in the internal space between the parallel plate and the lower perforated plate, and sprays an absorbent liquid onto the parallel plate from bottom to top; a demister is disposed in the internal space between the upper perforated plate and the outlet end; a downward spraying device is disposed in the internal space between the upper perforated plate and the demister, and sprays the absorbent liquid onto the parallel plate from top to bottom; and an absorbent liquid supply device supplies the absorbent liquid to the upward spraying device and the downward spraying device respectively.

2. The desulfurization equipment as described in claim 1, wherein, The upward spraying device contains multiple nozzles arranged at intervals.

3. The desulfurization equipment as described in claim 2, wherein, These nozzles are solid conical single-fluid nozzles.

4. The desulfurization equipment as described in claim 1, wherein, The absorbent supply device includes: a storage tank for storing the absorbent; and a circulation pump for supplying the absorbent from the storage tank to the upward spraying device and the downward spraying device respectively.

5. The desulfurization equipment as described in claim 1, wherein, The lower perforated plate and the upper perforated plate are plates with multiple perforations, the diameter of which is 8 to 10 mm.

6. The desulfurization equipment as described in claim 1, wherein, The number of parallel plates is one or two.

7. The desulfurization equipment as described in claim 1, wherein, The absorbent contains sodium hydroxide or magnesium hydroxide.

8. The desulfurization equipment as described in claim 1, wherein, The parallel plate has a cylindrical structure, and the multiple absorption plates are arranged in concentric circles.

9. The desulfurization equipment as described in claim 1, wherein, The spacing between the multiple absorption plates is 2 to 6 mm.

10. The desulfurization equipment as described in claim 1, wherein, These multiple absorbent panels are made of moisture-absorbing chemical fiber material.

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