Abstract: The present invention relates to an apparatus for salt precipitation and scaling tests, which comprises two reagent storage tanks (2, 3), a reagent mixing module (6), induction period measurement modules (7, 12), an ultrasound-assisted precipitation module (9) and a scaling module with heat exchanger (13). From the apparatus, it is possible to carry out tests with the purpose of investigating the influence of parameters such as flow rate, temperature and concentration on salt precipitation and scaling. It is further possible to carry out tests under the action of ultrasound, since it promotes acceleration of chemical reactions.
Type:
Application
Filed:
April 20, 2022
Publication date:
October 27, 2022
Applicants:
PETRÓLEO BRASILEIRO S.A. - PETROBRAS, UNIVERSIDADE FEDERAL DA BAHIA
Inventors:
Iuri Muniz PEPE, Geydison Gonzaga Demetino, Andre Leibsohn Martins, Luiz Carlos Simões Soares Júnior, Marcus Vinicius Duarte Ferreira, Helga Elisabeth Pinheiro Schluter, Lucas Ramalho Oliveira, Bruno Barbosa Castro
Abstract: The present invention refers to the process of determination of light elements, i.e., molar mass lower than 23, within inorganic materials, by means of spectra analysis between 5 keV and 22 keV, obtained from these materials when exposed to X radiation. Particularly, the invention refers to the direct determination of carbon content in steel and alloys. According to the invention process, the inorganic materials are exposed to X radiation and the spectra are organized as a matrix and mathematically processed using chemometric tools properly selected.
Type:
Grant
Filed:
October 24, 2008
Date of Patent:
April 2, 2013
Assignees:
Petroleo Brasileiro S.A., Universidade Federal da Bahia
Inventors:
Martha Teresa Pantoja De Oliveira Castro, Cristina Maria Assis Lopes Tavarez da Mata Hermida Quintella, Joao Nazareth Lafayette De Mello Mac-Culloch
Abstract: The present invention refers to the process of determination of light elements, i.e., molar mass lower than 23, within inorganic materials, by means of spectra analysis between 5 keV and 22 keV, obtained from these materials when exposed to X radiation. Particularly, the invention refers to the direct determination of carbon content in steel and alloys. According to the invention process, the inorganic materials are exposed to X radiation and the spectra are organized as a matrix and mathematically processed using chemometric tools properly selected.
Type:
Application
Filed:
October 24, 2008
Publication date:
November 11, 2010
Applicants:
PETROLEO BRASILEIRO S.A. -PETROBRAS, UNIVERSIDADE FEDERAL DA BAHIA
Inventors:
Martha Teresa Pantoja de Oliveira Castro, Cristina Maria Assis Lopes Tavarez da Mata Hermida Quintella, Joao Nazareth Lafayette de Mello Mac-Culloch