PMID- 25947211
OWN - NLM
STAT- MEDLINE
DCOM- 20150925
LR  - 20150507
IS  - 1096-2247 (Print)
IS  - 1096-2247 (Linking)
VI  - 65
IP  - 4
DP  - 2015 Apr
TI  - Low-nitrogen oxides combustion of dried sludge using a pilot-scale cyclone 
      combustor with recirculation.
PG  - 413-22
LID - 10.1080/10962247.2014.998353 [doi]
AB  - Recently, numerical and experimental studies have been conducted to develop a 
      moderate or intense low-oxygen dilution (MILD) combustion technology for solid 
      fuels. The study results demonstrated that intense recirculation inside the 
      furnace by high-momentum air is a key parameter to achieve the MILD combustion of 
      solid fuels. However, the high-velocity air requires a significant amount of 
      electricity consumption. A cyclone-type MILD combustor was therefore designed and 
      constructed in the authors' laboratory to improve the recirculation inside the 
      combustor. The laboratory-scale tests yielded promising results for the MILD 
      combustion of dried sewage sludge. To achieve pilot-scale MILD combustion of 
      dried sludge in this study, the effects of geometric parameters such as the 
      venturi tube configuration, the air injection location, and the air nozzle 
      diameter were investigated. With the optimized geometric and operational 
      conditions, the pilot-scale cyclone combustor demonstrated successful MILD 
      combustion of dried sludge at a rate of 75 kg/hr with an excess air ratio of 
      1.05. IMPLICATIONS: A horizontal cyclone combustor with recirculation 
      demonstrated moderate or intense low-oxygen dilution (MILD) combustion of dried 
      sewage sludge at a rate of 75 kg/hr. Optimizing only geometric and operational 
      conditions of the combustor reduced nitrogen oxide (NOx) emissions to less than 
      75 ppm. Because the operating cost of the MILD combustor is much lower than that 
      of the selective catalytic reduction (SCR) applied to the conventional combustor, 
      MILD combustion technology with the cyclone type furnace is an eligible option 
      for reducing NOx emissions from the combustion of dried sewage sludge.
FAU - Shim, Sung Hoon
AU  - Shim SH
AD  - a Environmental and Energy Research Division , Korea Institute of Machinery & 
      Materials , Daejeon , Korea.
FAU - Jeong, Sang Hyun
AU  - Jeong SH
FAU - Lee, Sang-Sup
AU  - Lee SS
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Air Waste Manag Assoc
JT  - Journal of the Air & Waste Management Association (1995)
JID - 9503111
RN  - 0 (Nitrogen Oxides)
RN  - 0 (Sewage)
SB  - IM
MH  - Air
MH  - Air Movements
MH  - Incineration/*instrumentation/methods
MH  - Nitrogen Oxides/*chemistry
MH  - Pilot Projects
MH  - Sewage/*chemistry
MH  - Waste Disposal Facilities
EDAT- 2015/05/08 06:00
MHDA- 2015/09/26 06:00
CRDT- 2015/05/08 06:00
PHST- 2015/05/08 06:00 [entrez]
PHST- 2015/05/08 06:00 [pubmed]
PHST- 2015/09/26 06:00 [medline]
AID - 10.1080/10962247.2014.998353 [doi]
PST - ppublish
SO  - J Air Waste Manag Assoc. 2015 Apr;65(4):413-22. doi: 
      10.1080/10962247.2014.998353.