Pumps tailings

Many pipelines are used for pumping tailings. Selecting a site for disposal of tailings is based on many factors ... 

Many times, the broken part of a pump is replaced when it tails without an effort to understand why the situation happened. Any corrective action that takes place is usually a temporary arrangement. The probability is quite high that the pump will fail again for the same reason. This part replaeement with no analysis practice is not accepstable due to the high cost of the maintenanee, parts, time and lost produetion. 

Very few industrial pumps come out of service and go into the maintenance shop because tlie volute casing or impeller split down the middle, or because the shaft fractured into four pieces, d he majority of pumps go into the shop because the bearings or the mechanical seal tailed. 

LOCAT units can be used for tail-gas clean-up from chemical or physical solvent processes. They can also be used directly as a gas sweetening unit by separating the absorber/oxidizer into two vessels. The regenerated solution is pumped to a high-pres.sure absorber to contact the gas. A light slurry of rich solution comes off the bottom of the absorber and flows to an atmospheric oxidizer tank where it is regenerated. A dense slurry is pumped off the base of the oxidizer to the melter and sulfur separator. 

Condenser tail pipes, used tvith any condenser, are sealed with a 34-foot leg into a sump, or with a condensate pump operating under vacuum on suction. With surface-type condensers, the level may be sealed in a receiver with a float or other type of level control. 

In practice, the process of periodically topping up the inhibitor formulation through a hose cock or via a timer-controlled pump works well when water losses are minimal and the boiler is clean. But as discussed previously, when excess water is lost from the system through various means and MU demands become significant, the practice becomes one of chasing your own tail, and the various common forms of waterside corrosion, sludging, and deposition rapidly develop and flourish. 

The retrieval mechanism for the M6P receptor resembles the one previously described for the H/KDEL receptor [53]. Optimal binding of M6P receptor to M6P occurs at pH 6.5-6.7, the pH found in the TGN. When transport vesicles arrive at late endosomes, the pH is lowered by the action of H+ pumps. The affinity of the M6P receptor for its ligands is reduced at acid pHs, resulting in M6P receptor releasing the M6P in the late endosome. As a result, transport of lysosomal hydrolases occurs unidirectionally. Once the M6P receptor releases M6P-bearing hydrolases, the receptor can be returned to the TGN for reuse. Transport of the M6P receptor to either TGN or late endosome relies on signal peptides on the cytoplasmic tail region of the M6P receptor. 

An air pocket in the pump can cause low or no pressure or flow, erratic pressure, and changes in retention time data. It may be necessary to bleed air from the pump or prime the pump according to system startup procedures. Air pockets in the column will mean decreased contact with the stationary phase and thus shorter retention times and decreased resolution. Tailing and peak splitting on the chromatogram may also occur due to air in the column. Air bubbles in the detector flow cell are usually manifested on... 

C CilmUPFJ-Acetonitrile-water liquid system The denser IL-rich liquid phases were used as the stationary phase and the upper aqueous phase was the mobile phase pumped in the tail-to-head (ascending) direction. 

By photochemically pumping the tail of the MPCT transition, the recovery kinetics was measured in the nanosecond time scale (125c). 

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