A evolução da indústria petroquímica brasileira

Torres, Eduardo Mc Mannis

doi:10.1590/s0100-40421997000700009

Cited by 4 publications

(2 citation statements)

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“…The large amount of alkylphenols, methoxyphenols, pyridines, and anilines is of interest for the chemical and pharmaceutical industries, or even as additives in materials such as ceramics and in the manufacture of polymers and phenolic resins, while the hydrocarbons could be used for biofuel production. ,,, Bulushev and Ross studied the catalytic hydrotreating for deoxygenation of the bio-oil with use of catalysts, such as a ZSM-5 zeolite . Other researchers have also been successful in obtaining bio-oils with higher hydrogen content for use in biofuels. − Results of previous research for obtaining N-compounds (majority in this bio-oil) show that they are derived from raw tobacco …”

Section: Resultsmentioning

confidence: 99%

Pyrolysis of Residual Tobacco Seeds: Characterization of Nitrogen Compounds in Bio-oil Using Comprehensive Two-Dimensional Gas Chromatography with Mass Spectrometry Detection

et al. 2017

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Energetic tobacco (EnT) is a type of genetically modified tobacco with a focus on energy. Its seeds are larger and appear in greater quantity than those of conventional tobacco. This plant easily adapts to unproductive soils and is practically free of nicotine. The oil seed from EnT can be used for producing biodiesel without competition with edible oils. Additionally, the resulting residual cake can be thermally degraded to bio-oil and biochar through pyrolysis processes. In this study, the fast pyrolysis (700 °C at 100 °C min–1) of the residual cake of EnT seeds was performed in a fixed bed reactor (quartz), yielding approximately 40% (in mass) liquid products (bio-oil and an aqueous phase). After removal of the aqueous phase, the organic phase was submitted to an acid–alkaline extraction of the N-compounds in a simple and efficient way. The bio-oil and alkaline extract were analyzed by comprehensive two-dimensional gas chromatography coupled to fast-quadrupole mass spectrometry. Compounds were tentatively identified by similarity with a commercial library of mass spectra and using retention indexes. The main classes of compounds identified were phenols, hydrocarbons, and N-compounds (imidazole, pyridine, and their derivatives), with the potential to be applied in the chemical and pharmaceutical industries as well as biofuel production. The alkaline extraction resulted in the isolation of the main N-components, a finding fundamental for the utilization of these compounds for the production of pharmaceuticals, pesticides, and polymers.

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Section: Resultsmentioning

confidence: 99%

Pyrolysis of Residual Tobacco Seeds: Characterization of Nitrogen Compounds in Bio-oil Using Comprehensive Two-Dimensional Gas Chromatography with Mass Spectrometry Detection

et al. 2017

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“…The Brazilian petrochemical industry uses naphtha as the main feedstock. (TORRES, 1997) Petrochemical products are classified as medium to high value products in the global Market. Petrochemical plants are wide spread all over the world.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation of an Industrial Distillation Column

Firmino

Silva²,

Silva³

et al. 2019

J. Eng. Exact Sci.

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This work aims the study of a debutanizer column of a typical petrochemical industry. First a steady state model was built using ASPEN PLUS and then the model was transformed to the dynamic version using ASPEN DYNAMICS. The debutanizer column split a mixture of hydrocarbons into a C4 rich fraction and a C5+ fraction. In the C4 fraction 1-3 butadiene is the desired compound which will be separated in another processing unit. 1-3 butadiene is an important feedstock for the polymer industry. The column dimensions and characteristics and operational conditions where supplied by the company. The first part of the study was the model building and results validation with real data of the industry. Then the model was transformed into the dynamic version for control study purposes. Both open and closed loop studies were performed. The generated curves will be used by the company for control scheme selection purposes. k e y w o r d s 1,3-butadiene steady state distillation dynamic distillation process control dynamic simulation.

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Proteção das águas e desenvolvimento em debate no sul do Brasil

Pereira

Ribeiro

2021

Estud. Ibero-Am. (Online)

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Na transição entre as décadas de 1970 e 1980, época marcada pelo ressurgimento de movimentos coletivos no Brasil, as populações de várias cidades sulinas situadas às margens do complexo lagunar Guaíba-Lagoa dos Patos encontraram caminhos para manifestar e fazer valer a sua preocupação a respeito do potencial poluidor de um grande complexo industrial, em ações verificadas desde os seus primeiros anúncios públicos. Pesquisa interdisciplinar mais abrangente torna possível este artigo, o qual recupera a primeira fase da história ambiental de ação de desenvolvimento efetivada no Rio Grande do Sul, a partir de entrevistas, consulta de arquivos públicos e privados e trabalho de campo: o III Polo Petroquímico. No âmbito do II Plano Nacional de Desenvolvimento, vigente durante a ditadura civil-militar, delineiam-se as grandes linhas do entrechoque público que o empreendimento causou, buscando compreender como aconteceu o debate e embate de ideias na condução desse projeto, antecessor de conjunto de plantas químicas operando ininterruptamente desde 1982 nos municípios de Triunfo e Montenegro. Defende-se que, em tempos e espaços ainda rarefeitos de normatizações ambientais, as ações e discursos de ambientalistas, políticos, técnicos e população em geral conseguiram proteger com mais rigor as águas necessárias, dentre outros usos, ao abastecimento da população de Porto Alegre. Mostra-se como dessas lutas resultam marcos pragmáticos nas medidas de proteção ambiental nacional: o pioneiro estudo de impacto ambiental e o enfim resultante modo de tratamento dos efluentes líquidos do complexo.

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A evolução da indústria petroquímica brasileira

Cited by 4 publications

References 0 publications

Pyrolysis of Residual Tobacco Seeds: Characterization of Nitrogen Compounds in Bio-oil Using Comprehensive Two-Dimensional Gas Chromatography with Mass Spectrometry Detection

Pyrolysis of Residual Tobacco Seeds: Characterization of Nitrogen Compounds in Bio-oil Using Comprehensive Two-Dimensional Gas Chromatography with Mass Spectrometry Detection

Dynamic Simulation of an Industrial Distillation Column

Proteção das águas e desenvolvimento em debate no sul do Brasil

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