Carbon Particles Mass Concentration Effect on Dusts Ignition and Burning Parameters

2012 ◽  
pp. 1083-1085
Author(s):  
S. G. Orlovskaya ◽  
O. N. Zuj ◽  
F. F. Karimova
Keyword(s):  
Mass Concentration ◽  
Concentration Effect ◽  
Carbon Particles ◽  
Burning Parameters

scholarly journals Study of Combustion Characteristics of Carbon Particles Clouds

2015 ◽  
Vol 16 (1) ◽  
pp. 210-216
Author(s):  
S. G. Orlovska
Keyword(s):  
Mass Concentration ◽  
Fine Particles ◽  
Equal Mass ◽  
Coarse Particles ◽  
Burning Time ◽  
Carbon Particles ◽  
Coal Particles ◽  
Surface Burning ◽  
Temperature Heat ◽  
The Mean

High temperature heat and mass transfer and chemical kinetics are modeled in polydisperse cloud of coal particles taking into consideration reactions in pores and Stefan flow at the surface. Burning characteristics are calculated of bimodal aerosol, with the assumption of equal mass concentration of two fractions with two or three-fold difference between the mean particles diameters. It is shown that ignition delay of coarse particles in bimodal aerosol is significantly less than that of equal size particles in monodisperse aerosol. Also a burning time of fine particles is substantially less in bimodal aerosol. It is demonstrated that burning temperature is higher in case of bimodal aerosol in comparison with monodisperse one.

Accumulation of Macromolecular Particles in the Reticuloendothelial System (RES) Mediated by Platelet Aggregation and Disaggregation

1969 ◽  
Vol 22 (03) ◽  
pp. 496-507 ◽  
Author(s):  
W.G van Aken ◽  
J Vreeken
Keyword(s):  
Platelet Aggregation ◽  
Degradation Products ◽  
Reticuloendothelial System ◽  
Caproic Acid ◽  
Carbon Particles ◽  
Carbon Clearance ◽  
Aggregation And Disaggregation ◽  
Platelet Aggregates

SummaryCarbon particles cause platelet aggregation in vitro and in vivo. Prior studies established that substances which modify thrombocyte aggregation also influence the rate at which carbon is cleared from the blood.This study was performed in order to elucidate the mechanism by which the carbon-platelet aggregates specifically accumulate in the RES.Activation of fibrinolysis by urokinase or streptokinase reduced the carbon clearance rate, probably due to generated fibrinogen degradation products (FDP). Isolated FDP decreased the carbon clearance and caused disaggregation of platelets and particles in vitro. Inhibition of fibrinolysis by epsilon-amino-caproic acid (EACA), initially accelerated the disappearance of carbon and caused particle accumulation outside the RES, predominantly in the lungs. It is supposed that platelet aggregation and locally activated fibrinolysis act together in the clearance of particles. In the normal situation the RES with its well known low fibrinolytic activity, becomes the receptor of the particles.

HAYNES STELLITE ALLOY No. 4

Alloy Digest ◽  
1969 ◽  
Vol 18 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Cast Alloy ◽  
Heat Treating ◽  
Carbon Particles ◽  
Stellite Alloy ◽  
Temperature Performance ◽  
Cobalt Base

Abstract Haynes Stellite No. 4 is a cobalt-base cast alloy recommended for handling severe conditions of abrasion, heat and corrosion. It is especially recommended to resist the severe abrasive and corrosive action of manganese dioxide, carbon particles, and ammonium and zinc chlorides in the battery mix used in the manufacture of dry batteries. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as heat treating, machining, and joining. Filing Code: Co-59. Producer or source: Union Carbide Materials Systems Division.

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