Elimination of gaseous emissions of the absorption process in formalin production by integrating a vortex-type direct-contact condenser into a traditional process flow scheme

Abstract

Currently, special consideration is given to environmental issues. Atmospheric pollution by gaseous emissions from industrial enterprises is caused by a variety of reasons, such as incomplete product yield, peculiarity of reaction behavior, or emissions resulting from the loss of the final product. This article describes gaseous emissions from the operation of the absorption plant for the production of industrial formalin. Various techniques for purifying gaseous emissions are shown. A modernized technological scheme model with an integrated vortex–type direct–contact condenser for absorbing methyl alcohol and formaldehyde vapors from contact gas is developed in the universal simulation package.This model enables the technological modes of industrial formalin production absorption processes to beselected. Ithas been revealed that the use of a vortex–type direct–contact condenser willminimize atmospheric emissions and increase resource efficiency. The magnitude of the difference between production data and calculated results for the proposed model turned out to be no more than 8%.