Use of High-Frequency Ultrasound Waves for Boiler Water Demineralization/Desalination Treatment

Yago Fraga Ferreira Brandão, Leonardo Bandeira dos Santos, Gleice Paula de Araújo, Leonildo Pereira Pedrosa Júnior, Benjamim Francisco da Costa Neto, Rita de Cássia Freire Soares da Silva, Mohand Benachour, Attilio Converti, Leonie Asfora Sarubbo and Valdemir Alexandre dos Santos
Additional contact information
Yago Fraga Ferreira Brandão: UNICAP-ICAM TECH International School, Catholic University of Pernambuco (UNICAP), Rua do Príncipe, n. 526, Boa Vista, Recife 50050-900, Brazil
Leonardo Bandeira dos Santos: Advanced Institute of Technology and Innovation (IATI), Rua Potira, 31, Prado, Recife 50751-310, Brazil
Gleice Paula de Araújo: UNICAP-ICAM TECH International School, Catholic University of Pernambuco (UNICAP), Rua do Príncipe, n. 526, Boa Vista, Recife 50050-900, Brazil
Leonildo Pereira Pedrosa Júnior: UNICAP-ICAM TECH International School, Catholic University of Pernambuco (UNICAP), Rua do Príncipe, n. 526, Boa Vista, Recife 50050-900, Brazil
Benjamim Francisco da Costa Neto: TermoCabo S.A., Av. Refibras, 146, Industrial District, Cabo de Santo Agostinho 54505-000, Brazil
Rita de Cássia Freire Soares da Silva: UNICAP-ICAM TECH International School, Catholic University of Pernambuco (UNICAP), Rua do Príncipe, n. 526, Boa Vista, Recife 50050-900, Brazil
Mohand Benachour: Advanced Institute of Technology and Innovation (IATI), Rua Potira, 31, Prado, Recife 50751-310, Brazil
Attilio Converti: Department of Civil, Chemical and Environmental Engineering, Università degli Studi di Genova (UNIGE), Pole of Chemical Engineering, Via Opera Pia 15, I-16145 Genova, Italy
Leonie Asfora Sarubbo: UNICAP-ICAM TECH International School, Catholic University of Pernambuco (UNICAP), Rua do Príncipe, n. 526, Boa Vista, Recife 50050-900, Brazil
Valdemir Alexandre dos Santos: UNICAP-ICAM TECH International School, Catholic University of Pernambuco (UNICAP), Rua do Príncipe, n. 526, Boa Vista, Recife 50050-900, Brazil

Energies, 2022, vol. 15, issue 12, 1-17

Abstract: Isolated ultrasonic vibrations were used to treat feed water from a 20 bar steam-producing water tube boiler. Physical treatments such as ultrasounds and reverse osmosis (RO) are recommended as the most eco-friendly for this purpose. A novel bench-scale prototype delivering 6 L/h of treated water was designed and built. The ultrasonic atomization of raw water with 1.7 MHz piezoelectric transducers and subsequent humidification and dehumidification of drag airflow was the innovating sequence of operations used as a treatment technique. To ensure greater humidification capacity to the drag air, the energy available from the thermal inertia of the liquid column (raw water) in the prototype vaporization chamber was used to heat this air flow. After a single pass of raw water through the bench-scale prototype, a 98.0% reduction in conductivity and a 99.0% decrease in the content of total dissolved solids were obtained at a drag air temperature of 70 °C. Compared to RO, two of the main advantages of the proposed ultrasonic wave method are the elimination of the use of chemical agents in the pre-treatment phase and a significant reduction in maintenance costs by membrane replacement.

Keywords: ultrasonic technique; bench-scale prototype; boiling water; ultrasonic atomization; thermal inertia (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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