Graphite absorber for acid gas consists of three parts: a gas-liquid distributor, an absorption cooling section, and a gas-liquid separator. The gas-liquid distributor is composed of impermeable graphite from gas and liquid inlet pipes, stabilizing rings, and guide pipes. The absorption liquid input from the inlet pipe enters the upper part of the guide tube in a uniformly distributed state after passing through the space above the heat exchange block at the bottom of the stabilizing ring. The absorption liquid enters along the tangential direction and forms a spiral descent inside the tube. The lower absorption liquid flows down along the inner wall of the tube in a film like manner and flows in the same direction as the gas that is easily soluble in the absorption liquid, making full contact and being absorbed. The heat of dissolution is transferred to the coolant through the partition and carried out of the equipment. The unabsorbed gas enters the gas-liquid separator located at the bottom of the equipment along with the product to provide separation space. After separation, the gas is sent to the exhaust tower and the product is fed into the storage tank.

The absorption cooling of graphite absorber section is divided into two types according to its structural type: tubular and block hole, which are similar in structure to tubular and round hole graphite heat exchangers.

Graphite absorbers can absorb HCI gas to produce hydrochloric acid, and can also be used for the absorption of other gases such as SO2, NH3, HF, P2O5, H2S, etc.