| 摘要 |
<p>PURPOSE:To utilizie effectively the heat of stripping steam used for degassing, by combining a stage for removing acidic gas and a stage for stripping, to utilize in a multi-effect manner the low pressure steam. CONSTITUTION:A produced gas containing an acidic gas is sent to a stage A from a line 1, and a low pressure steam used for absorbing is sent through a lines 4 and 5. A purified gas is extracted from a line 9, and the acidic gas is extracted from a line 20. B is a degassing stage, and consists of a stripping tower 22, and is operated under a pressure higher by 1-2kg/cm than the pressure in a conventional method. By the stage different from the conventional one; a gas produced through the stripping is circulated as it is without being treated by condensation, to an acidic gas stage A, and is successively introduced to a regenerating tower, then the heat discharged as waste heat in former times is effectively utilizied. The acidic gas containing in the stripping gas is extracted together with an acidic gas discharged from an absorbing liquid from the top of the generator.</p> |
