a study of paint sludge deactivation by pyrolysis reactions
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ID: 177087
2003
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Abstract
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.
| Reference Key |
muniz2003braziliana
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|---|---|
| Authors | ;L.A.R. Muniz;A.R. Costa;E. Steffani;A.J. Zattera;K. Hofsetz;K. Bossardi;L. Valentini |
| Journal | database and network journal |
| Year | 2003 |
| DOI |
10.1590/S0104-66322003000100012
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