Tear it down. Strip the metal out. Pulverize the concrete. Shred it. Shear it. Dice it up and get it out of here. Bring it all down and start over. The idea of a total demolition job may sound haphazard and uncontrolled – but large-scale dismantling firms like North American Dismantling Corp. have moved far beyond the days of just swinging away with a wrecking ball.
E/EL Pulverizer bottom ring lifting clamp - Case study
PurposeAlert customers on safety procedures when using the Babcock & Wilcox bottom grinding ring lifting clamp. ProblemThe Babcock&Wilcox lifting clamp is designed only to lift the bottom ring off the ring seating surface of the yoke and to position the ring back on top of the ring seating surface of the yoke, when the bottom ring is completely inside the pulverizer housing (see Figure 1).We have found that many customers use the lifting clamp to transport the used bottom grinding rings out of the...
Spiral bevel gear bolts - B&W Roll Wheel™ Pulverizer gearbox - Case study
PurposeTo alert owners and operators of B&VV Roll Wheel™ pulverizers of a possible problem with the bolls on the spiral bevel gear (See Figure 1).ProblemThe constant cyclic loading In the B&W Roll Wheel™ gear drive may cause the spiral bevel gear bolts to work loose. Once loose, the bolts experience an additional bending load, thus falling due to fatigue. When failure occurs, the spiral bevel gear could spin on the spider (See Figure 2) or push the spider down on the first intermediate shaft.Rec...
Ammonium, nitrate, and total nitrogen determination in fly ash
Fly ash is a by-product of the combustion of pulverized coal and is composed of small particles. The composition of the fly ash may vary considerably, however, all fly ashes contain substantial amounts of silicon dioxide (SiO2), aluminum oxide (Al2O3) and calcium oxide (CaO). Nowadays, air pollution control standards require a separation of flue gas before being released to the atmosphere. Fly ash, incurred in the flue gas can be re-used e.g. as fill material or raw material for cement . The fly ash sample...
Luminant Oak Grove Power Station - Case Study
Powering Texas Luminant, a subsidiary of Energy Future Holdings Corp. (EFH) -which owns competitive and regulated energy subsidiaries in Texas -is the largest electricity generator in Texas. Unit two of the Oak Grove Power plant near Franklin in Robertson County, TX went online in the middle of 2010. Fluor, the project’s EPC company, completed the plant in 35 months and used advanced control technologies to make the Oak Grove super-critical generating station one of the cleanest coal-fired power plants in...
Neue Herbold Pulverizers / pulverizing systems
NEUE HERBOLD ZM series pulverizers (pulverisers) are designed for the pulverizing of mid-hard, brittle to high impact plastics that require the final material to be in powder form. Typical applications are PE, PVC, PC and other various types of plastics. The required pulverizer (pulverisers) input material must be in a granulate form with a maximum size of 6-8 mm (1/4-5/16 in.). The ZM series pulverizer (pulverisers) is a extremely high out put unit can be supplied with automatic temperature control. The...