Blendas de isolante térmico para aplicação em tubulações de vapor na indústria do petróleo

Abstract

The purpose of this work is to describe the procedures for the development of an alternative material used for thermal insulation in high temperatures of steam injection pipes through the reuse of waste commercial insulation materials such as calcium silicate and rock wool associates of blends forms with waste of on-shore oil well drilling. This work was divided into three main parts, the first relates to the collection and preparation of samples of materials as found in the field, i.e., materials that have been subjected to high temperatures process, the second was design of experiment and planning with the aid commercial software for DOE Design-Expert® V10 and execution of the determination of thermal conductivity tests for compositions designed using the thermal conductivity meter equipment KD2-Pro of the company Decagon Devices, Inc., the results of these tests were fed back into the Design- Expert® V10 to generate a mathematical model with graphical output of contour lines representing the ternary blends and finally was executed a computational simulation on a steady state basis with the use of commercial software Ansys® to theoretically prove the applicability of the new material as insulation for energy conservation and personal protection. The results of the computational simulation showed that a maximum average temperature of 57,3ºC and 59,3ºC to the experimental results in the external surface of mechanical protection of thermal insulation designed with a total thickness of 38.1 mm applied in a carbon steel pipe with nominal diameter of 3 inches and schedule 80 when subjected to the temperature of 313ºC.