scholarly journals Study on characteristics of particulate emission of diesel aftertreatment with reciprocating flow

2021 ◽  
Vol 9 (4) ◽  
pp. 535-547
Author(s):  
Yangbo Deng ◽  
Xiaolong Wang ◽  
Rongrui Li ◽  
Zhitao Han ◽  
Hongwei Wu ◽  
...  
Keyword(s):  
Particulate Emission ◽  
Reciprocating Flow

scholarly journals PM2.5 Magnetic Properties in Relation to Urban Combustion Sources in Southern West Africa

Atmosphere ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 496
Author(s):  
Aruã da Silva Leite ◽  
Jean-François Léon ◽  
Melina Macouin ◽  
Sonia Rousse ◽  
Ricardo Ivan Ferreira da Trindade ◽  
...  
Keyword(s):  
Narrow Range ◽  
Excellent Correlation ◽  
Magnetic Mineralogy ◽  
Particulate Emission ◽  
Magnetic Parameters ◽  
Element Carbon ◽  
Physico Chemical ◽  
Magnetic Investigation ◽  
Combustion Sources ◽  
Carbon Concentrations

The physico-chemical characteristics of particulate matter (PM) in African cities remain poorly known due to scarcity of observation networks. Magnetic parameters of PM are robust proxies for the emissions of Fe-bearing particles. This study reports the first magnetic investigation of PM2.5 (PM with aerodynamic size below 2.5 μm) in Africa performed on weekly PM2.5 filters collected in Abidjan (Ivory Coast) and Cotonou (Benin) between 2015 and 2017. The magnetic mineralogy is dominated by magnetite-like low coercivity minerals. Mass normalized SIRM are 1.65 × 10−2 A m2 kg−1 and 2.28 × 10−2 A m2 kg−1 for Abidjan and Cotonou respectively. Hard coercivity material (S-ratio = 0.96 and MDF = 33 mT) is observed during the dry dusty season. Wood burning emits less iron oxides by PM2.5 mass when compared to traffic sources. PM2.5 magnetic granulometry has a narrow range regardless of the site or season. The excellent correlation between the site-averaged element carbon concentrations and SIRM suggests that PM2.5 magnetic parameters are linked to primary particulate emission from combustion sources.

scholarly journals Particulate Emission Characteristics from Palm Fibre and Shell Combustion with Alumino-Silicate Based Additives

2021 ◽  
Vol 1051 (1) ◽  
pp. 012068
Author(s):  
M Afiq Daniel Azmi ◽  
S Zahiruddin ◽  
S Shahidana ◽  
J NorRuwaida ◽  
M Rashid ◽  
...  
Keyword(s):  
Emission Characteristics ◽  
Particulate Emission ◽  
Alumino Silicate ◽  
Palm Fibre

The Design of Exhaust Gas Cooler for Diesel Particulate Bag Filter

2015 ◽  
Vol 737 ◽  
pp. 608-611
Author(s):  
Xiu Ye Wang ◽  
Guo Bin Li ◽  
Nan Xu
Keyword(s):  
Diesel Exhaust ◽  
Particulate Filter ◽  
Particulate Emissions ◽  
Bag Filter ◽  
Engine Exhaust ◽  
Particulate Emission ◽  
Filter System ◽  
Exhaust Temperature ◽  
Diesel Exhaust Particulate ◽  
Exhaust Particulate

Currently, the application of bag-filter technology in controlling diesel exhaust particulate emissions has been close to practical stage. As one of the key links in bag-filter technology, engine exhaust cooling can directly influence working safety of the entire exhaust particulate filter system. Thermodynamic calculations and experimental research of water-cooled chiller has provided a feasible basis for water cooler to be used in actual diesel exhaust particulate emission control system. The cooler can make engine exhaust temperature drop from 400 to 180 . Even when engine works in high-speed and high-load condition, inlet exhaust temperature of cooler can descend from 500 to 190 or so after cooling, which can still meet bag-filter system requirement of below 200 .

Application of short bed reciprocating flow ion exchange to copper/zinc separation from concentrated leach solutions

1992 ◽  
Vol 30 (1-3) ◽  
pp. 431-444 ◽  
Author(s):  
A.F. Chinn ◽  
R.T. McAndrew ◽  
R.L. Hummel ◽  
J.E. Mouland
Keyword(s):  
Ion Exchange ◽  
Copper Zinc ◽  
Reciprocating Flow

Oscillatory Heat Transfer in a Pipe Subjected to a Laminar Reciprocating Flow

1996 ◽  
Vol 118 (3) ◽  
pp. 592-597 ◽  
Author(s):  
T. S. Zhao ◽  
P. Cheng
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Heat Flux ◽  
Nusselt Number ◽  
Numerical Study ◽  
Temperature Cycle ◽  
Uniform Heat Flux ◽  
Fluid Temperature ◽  
Cycle Space ◽  
Reciprocating Flow

An experimental and numerical study has been carried out for laminar forced convection in a long pipe heated by uniform heat flux and subjected to a reciprocating flow of air. Transient fluid temperature variations in the two mixing chambers connected to both ends of the heated section were measured. These measurements were used as the thermal boundary conditions for the numerical simulation of the hydrodynamically and thermally developing reciprocating flow in the heated pipe. The coupled governing equations for time-dependent convective heat transfer in the fluid flow and conduction in the wall of the heated tube were solved numerically. The numerical results for time-resolved centerline fuid temperature, cycle-averaged wall temperature, and the space-cycle averaged Nusselt number are shown to be in good agreement with the experimental data. Based on the experimental data, a correlation equation is obtained for the cycle-space averaged Nusselt number in terms of appropriate dimensionless parameters for a laminar reciprocating flow of air in a long pipe with constant heat flux.

Resurrecting a Major Coke Calcining Energy Recovery Plant

2007 ◽  
Author(s):  
Tommy John ◽  
Ray Deyoe ◽  
John Gray ◽  
Paul Gross
Keyword(s):  
Water Treatment ◽  
Acid Corrosion ◽  
Energy Prices ◽  
Particulate Emission ◽  
Gas Combustion ◽  
Field Instrumentation ◽  
Reconstruction Effort ◽  
Sulfuric Acid Corrosion ◽  
Treatment Facilities ◽  
Natural Gas Combustion

Refurbishment of the Port Arthur Steam Energy facility began in early 2005 after key commercial agreements were concluded. The plant, which had been idle since October 2000, was originally constructed in 1983 and 1984 to recover energy from three petroleum coke calcining kilns at the Great Lakes Carbon LLC facility. Major repairs were needed because of extensive damage from sulfuric acid corrosion of the HRSG system and deterioration of water treatment facilities. In addition, major improvements were made including an acoustic cleaning system, multiclones for particulate emission reduction, magnesium oxide injection for corrosion control, a complete new control system with all new field instrumentation, stack improvements to increase dispersion, and improvements to the HRSG system and water treatment system to improve reliability and reduce maintenance. Rising energy prices dictated a fast-paced schedule. Following a major reconstruction effort with a peak force of 435 people, the facility was in full operation by August 2005, less than nine months from commencement. The facility is producing approximately 450,000 lb/hr of high pressure steam, the majority of which is sold to the neighboring Valero Port Arthur refinery, and producing 4 to 5 MW of power. By capturing 1800–2000°F heat that would other wise be wasted, the project recovers nearly 5 trillion Bru/year, off setting over 200 tons/yr of NOx and over 280,000 tons/yr of carbon dioxide that would otherwise be emitted by natural gas combustion. The success of the project can be attributed to management of the project which included innovative inspection techniques, development of the scope of work, design of improvements, and extensive construction and repairs.

Particulate Emission Characteristics from an Impingement Diffusion Direct Injection Diesel Engine

1994 ◽  
Author(s):  
Hideaki Tanabe ◽  
Masashi Takahashi ◽  
G. Takeshi Sato ◽  
Satoshi Kato ◽  
Shigeru Onishi
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Emission Characteristics ◽  
Particulate Emission ◽  
Direct Injection Diesel Engine
Sign in / Sign up

Export Citation Format

Share Document