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New technology and practice of dust pollution control with foam jet in underground mines.
- Source :
-
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering [J Environ Sci Health A Tox Hazard Subst Environ Eng] 2019; Vol. 54 (1), pp. 39-47. Date of Electronic Publication: 2018 Oct 25. - Publication Year :
- 2019
-
Abstract
- Foam is used as an efficient means of dust suppression in underground coal mines. The poor performance of conventional adding device of foaming agent restricts its wide application. The objective of this study is to propose and investigate a new parallel jet adding device (PJAD). Experimental results show that PJAD requires a greater water flow to produce negative pressure than the single stage jet adding device (SJAD) and is harder to generate cavitation. PJAD consumes a less pressure loss than SJAD and realizes any adding proportion below 1%, which is especially suitable for precision addition of foaming agent. A foaming system used for dust suppression is put forward with PJAD adding foaming agent. Field application indicates that foam achieves a far better dust suppression effect than the roadheader water spraying, and the foam cost is significantly reduced due to the low adding proportion of foaming agent. The marked dust suppression effect makes us believe that the proposed PJAD will greatly promote the large-scale application of foam technology used for dust suppression in underground coal mines.
- Subjects :
- Air Pollutants pharmacokinetics
Air Pollution prevention & control
Compressed Air
Equipment Design
Humans
Professional Practice
Viscoelastic Substances administration & dosage
Viscoelastic Substances chemistry
Coal Mining instrumentation
Coal Mining methods
Dust prevention & control
Inventions
Occupational Exposure prevention & control
Viscoelastic Substances pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1532-4117
- Volume :
- 54
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering
- Publication Type :
- Academic Journal
- Accession number :
- 30359556
- Full Text :
- https://doi.org/10.1080/10934529.2018.1507220