ANALYSIS OF THE OPERATION OF AN L-VALVE FEEDING DRY SPENT COFFEE GROUND

ANALYSIS OF THE OPERATION OF AN L-VALVE FEEDING DRY SPENT COFFEE GROUND

SOUSA, L. M.; FERREIRA, M. C.

Pôster:

ARENA U, LANGELI CB, CAMMAROTA A, L-valve behaviour with solids of different sizeand density. Powder Technol., v. 98, p. 231-240, 1998.CAMPOS MM, FERREIRA MC, A comparative analysis of the flow properties between twoalumina-based dry powders. Advances in Material Sciences and Engineering, v. 2013, p. 1-7,2013.LIM HL, LEE DH, CHAE HJ, JEONG SY, Pressure change and control of the solid circulationrate of Geldart A particles in a small diameter L-valve. Powder Technol., v. 243, p. 139-148,2013.SMOLDERS K, BAEYENS J, The operation of L-valves to control standpipe flow. AdvancedPowder Technol., v. 6, p. 163-176, 1995.

ARENA U, LANGELI CB, CAMMAROTA A, L-valve behaviour with solids of different sizeand density. Powder Technol., v. 98, p. 231-240, 1998.CAMPOS MM, FERREIRA MC, A comparative analysis of the flow properties between twoalumina-based dry powders. Advances in Material Sciences and Engineering, v. 2013, p. 1-7,2013.LIM HL, LEE DH, CHAE HJ, JEONG SY, Pressure change and control of the solid circulationrate of Geldart A particles in a small diameter L-valve. Powder Technol., v. 243, p. 139-148,2013.SMOLDERS K, BAEYENS J, The operation of L-valves to control standpipe flow. AdvancedPowder Technol., v. 6, p. 163-176, 1995.

Palavras-chave:

DOI: 10.5151/cobeq2018-PT.0790

Referências bibliográficas

• [1] We analyzed the transient and stationary behavior of a 23 mm diameter Lvalve operating with spent coffee ground of two different particle-size distributions. The solids mass flux in the valve discharging to the atmosphere was stable in a wide operating range (100<GS<1250 kg/m²s). Besides, regions of low, medium and high aeration velocities could be identified based on experimental data of pressure loss and solids mass flux, and on a qualitative analysis of the flow patterns. We concluded that the L-valve is an appealing feeding device to handle biomass residues and that the solids height in the standpipe is a variable that must be monitored throughout the process.

Como citar:

SOUSA, L. M.; FERREIRA, M. C.; "ANALYSIS OF THE OPERATION OF AN L-VALVE FEEDING DRY SPENT COFFEE GROUND", p-2981-2984. In: . São Paulo: Blucher, 2018.
ISSN 23591757, DOI 10.5151/cobeq2018-PT.0790