FIELD: chemistry.
SUBSTANCE: invention relates to methods of adsorbing hydrogen chloride (HCl) from outlet regeneration gas. Said regeneration gas exiting the regeneration zone is cooled. Cooled outlet regeneration gas is supplied to an adsorption zone located at a distance from the regeneration zone. Spent catalyst and transporting gas from reaction zone are supplied to inlet for spent catalyst of separation hopper of adsorption zone. Outlet for spent catalyst of reaction zone is located at vertical level below level of inlet for spent catalyst of separating bunker of adsorption zone. Conveying gas is supplied from the system of gas of pneumatic separation and transporting gas. Spent catalyst is fed from adsorption separation bin to adsorption zone. Inlet for the spent catalyst of the adsorption zone is located at the vertical level below the outlet for the spent catalyst of the separation bin of the adsorption zone. HCl is adsorbed from the exhaust gas of regeneration by the spent catalyst in the adsorption zone with enrichment of the spent catalyst with HCl and obtaining the spent catalyst rich in HCl and extraction of HCl from the spent regeneration gas to produce waste gas of HCl-depleted regeneration. HCl depleted HCl recovery gas is ejected from the adsorption zone. Spent catalyst rich in HCl and transporting gas from the catalyst outlet of the adsorption zone are fed to the inlet into the separation bin of the regeneration zone. Outlet for the adsorption zone catalyst is located at the vertical level below the level of the inlet of the separation bin of the regeneration zone, and the pressure in the separation bin of the regeneration zone exceeds the pressure in the regeneration zone. Further, said components from the outlet of catalyst of separating hopper of regeneration zone are supplied to regeneration area inlet. Regeneration zone input is located at vertical level below level of separation zone billet outlet location.
EFFECT: technical result is higher efficiency, convenience and technological effectiveness of adsorption process, prevention of condensation.
6 cl, 1 dwg
