The transition section is made of Q235 steel shell lined with high temperature resistant, resistant to F4 material and then lined with graphite bricks. It can withstand high temperature, corrosion resistance and has good mechanical strength, and plays a role in connecting transition. It can not only resist high temperature flue gas for a long time, but also ensure the corrosion resistance of a small amount of concentrated sulfuric acid.

The reverse nozzle is made of high temperature resistant glass fiber reinforced plastic lined graphite brick (this scheme is combined with the actual use of the previous high-efficiency scrubber to prevent damage to the equipment due to misoperation. The composite material structure can make the reverse nozzle longer service life, higher temperature resistance, safer use, more obvious effect and more stable operation). In addition, an overflow weir is arranged on the upper part. The overflow enters the overflow weir tangentially through the liquid inlet pipe, and evenly overflows into the reverse nozzle in the circumferential direction. A continuous and uniform protective film is formed on the inner surface of the pipe wall, which can protect the reverse nozzle from damage when it is used at high temperature for a long time. In order to prevent the circulating acid liquid from being cut off due to the accidental shutdown of the circulating pump, if the liquid in the high-level tank is lower than a certain value, the water supplement valve can also be opened to ensure that the liquid in the high-level tank is always full. In case of accident, the accident water stored in the high-position tank can also use the electric valve opened in time to open the accident nozzle set by the starting force wave to protect the glass steel reverse nozzle and reduce the flue gas temperature at any time. The resin used by Dow 470, the resin performance is stable, high temperature resistance (up to 180 ℃) excellent, can ensure the equipment for a long time at a higher temperature safe and stable operation.