نتایج جستجو برای: dust removal
تعداد نتایج: 182607 فیلتر نتایج به سال:
Abstract Based on multiphase flow theory and capillary mechanics, the dimensionless bond number expression of influence string grille wire spacing droplet spreading is derived. Taking a liquid film formed by droplets based Kelvin correlation, Young–Laplace equation, Hagen–Poiseuille law, an equation for calculating thickness height established with temperature, relative humidity molar volume ph...
In order to solve the problem of low removal efficiency fine particles in flue gases metallurgy process, a chemical agglomeration pretreatment method was studied. The coagulant solution xanthan gum, konjac and their mixtures selected research reunion effects gravitational dust gas converter using self-built experimental platform. Moreover, wetting agent type, concentration, pressure, velocity o...
1-Interoduction: Air pollution has been considered as one of the global challenges. According to world health organization (WHO), dust particles are the 5th most dangerous cause of death 4.2 million in the world. According to the world meteorological organization (WMO), when the wind speed increases more than 15 m/s and the visibility decreases because of dust particles less than 1 km, it is c...
We present velocity-resolved spectro-astrometric imaging of the 4.7μm rovibrational lines of CO gas in protoplanetary disks using the CRIRES high resolution infrared spectrometer on the Very Large Telescope (VLT). The method as applied to three disks with known dust gaps or inner holes out to 4-45AU (SR 21, HD 135344B and TW Hya) achieves an unprecedented spatial resolution of 0.1 − 0.5AU. Whil...
the aim of this paper is eliminating cr(vi) by natural hap. hap is a inexpensive material which is used from bovine critical bone ash in order to remove heavy metal ions like cr(vi). some experiments in different ph are performed (ph=2,3,7). maximum adsorption was appeared at ph=2, dosage=0.3 gr, c0=10 mg/l. cr(vi) removal depends on ph value and initial amount of cr(vi) result of experiments w...
abstract background and aim: in cement production factories, dust is produced due to corrosion, grinding, replacement, and baking materials in the furnace. electrostatic precipitation is one of the most widely applied technologies for the removal of hazardous particles from cement factories. materials and methods: in this study, some questionnaires were designed, by attention with several s...
ABSTRACT Cotton dust is one of the chemical agents that cause air pollution in textile workshops. An investigation was done to measure cotton dust concentration in Mazandaran Province. 37 samples were collected by personal samplers devices and whatman filter papers of worker's inhalation zone of ambient air that contained total dust. 40 samples were collected by whatman filter papers and ho...
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