With increased activities and investments in the Brazilian petrochemical sector from the 1980s of the twentieth century, there was a concern and general interest in reducing emissions in storage tanks, both from an environmental point of view and from an economic point of view. Due to increasing demand and need for increasing reserves to supply the cities, both refiners and dealers had to increase the storage volume, creating new emission foci of volatile organic compounds. From an

more »

... point of view, the reduction of emissions of volatile organic compounds reflected in an improvement in energy efficiency by reducing the evaporation of the product ensures the best use of its use. It also provides a reduction of pollution and thus improve the quality of life in the neighborhood. Already from the economic and financial point of view, it is advantageous and interesting for companies that store volatile products invest in an emission reduction system, ensuring return on investment by reducing losses.Among a number of devices and emission control techniques for atmospheric tanks, one of the alternatives widely used in the industry are the internal floating roofs and this publication aims to clarify and guide the reader in a practical way of using Tanks 4.09d software, using practical examples of simulation.