When the corrosion inhibitor YF-971 (assisted with ammonia injection) has been injected from March 2002 with a dosage of 80 ppm, the total average iron in blow-down water is 1.6 mg/L and the bottom corrosion of the distillation tower has been effectively controlled.
Different inner structures of domestic crude electric desalter have been analyzed and compared according to the functional mechanism of electric field in the water drop electro coalescence process. High speed electric desalting features such characteristics as high speed and efficiency desaltings lower oil content in the drainage and the low electricity consumption. Crude capacity can be increased greatly compared under the same conditions.
The principle,method and application of the wireless automatic dewatering device were introduced in detail. Compared with the principle and application of the tranditional mechanical automatic dewatering device,the present question of the dewatering device was put forward and the latest development of the technology was elaborated.
Methylmercury concentrations in water draining mine calcines range from >amp;lt;0.02-1.4?ng/l, but methylmercury is highest in the pit lake water, ranging from 1.7-3.1?ng/l.
The crab stream is then produced by water draining from the crab burrow mouth, acting initially by cut-back erosion and followed by forward erosion of the relatively unconsolidated muddy sediments.
Water currently leaching from the tailings has been modified by water draining from the superimposed waste, which has had a positive influence on the tailings.
High concentrations of ammonia, up to 73.4 μg-at N/1, were measured in low tide water draining from marsh.
Water draining from the Everglades marshes of southern Florida containshigh concentrations of dissolved organic C (DOC), N (DON), and in somelocations, P (DOP).
A recent deve loped safety valve for water draining from such tanks is introduced. The paper also gives a brief account of the basic construction. its working principle and data bases upon which the valve design is derived.
Oil-water boundary meter with a 137Cs source is used for measure of oil -water boundary and auto-cut of water in the storage tank. The loss of oil and correlative explosion accidents caused by manul cutting of water can be avoided using this meter.
Many kinds of pollutents ,such as light component .sediment contaminated cleaning fluid,leakage from pump units and rainwater,are existed in the daily operation of tank farm. In the light of these pollutents, some countermeasures to reduce the emission of light component,adopt automatic dehydrator and clean oil tanks with standardized technique are put forward in order to protect the environment of tank farm.
切水
water draining
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