A study of paint sludge deactivation by pyrolysis reactions



Título del documento: A study of paint sludge deactivation by pyrolysis reactions
Revue: Brazilian journal of chemical engineering
Base de datos: PERIÓDICA
Número de sistema: 000308879
ISSN: 0104-6632
Autores: 1





Instituciones: 1Universidade de Caxias do Sul, Centro de Ciencias Exatas e Tecnologia, Caxias do Sul, Rio Grande do Sul. Brasil
Año:
Periodo: Mar
Volumen: 20
Número: 1
Paginación: 63-68
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés The production of large quantities of paint sludge is a serious environmental problem. This work evaluates the use of pyrolysis reaction as a process for deactivating paint sludge that generates a combustible gas phase, a solvent liquid phase and an inert solid phase. These wastes were classified into three types: water-based solvent (latex resin) and solvents based on their resins (alkyd and polyurethane). An electrically heated stainless steel batch reactor with a capacity of 579 mL and a maximum pressure of 30 atm was used. Following the reactor, a flash separator, which was operated at atmospheric pressure, partially condensed and separated liquid and gas products. Pressure and temperature were monitored on-line by a control and data acquisition system, which adjusted the heating power supplied to the pyrolysis reactor. Reactions followed an experimental design with two factors (reaction time and temperature) and three levels (10, 50 and 90 minutes; 450, 550 and 650°C). The response variables were liquid and solid masses and net heat of combustion. The optimal operational range for the pyrolysis process was obtained for each response variable. A significant reduction in total mass of solid waste was obtained
Disciplinas: Química,
Ingeniería
Palabras clave: Ingeniería ambiental,
Ingeniería química,
Industria de la pintura,
Lodos residuales,
Pirólisis,
Reactor discontinuo
Keyword: Chemistry,
Engineering,
Chemical engineering,
Environmental engineering,
Paint industry,
Sludge,
Pyrolysis,
Batch reactor
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