Pumps vs. agitators for tank mixing, classic case of CAPEX

Comparison BasisApplication DescriptionPump DescriptionAgitator DescriptionProcess Performance ComparisonLife Cycle Cost ComparisonSummaryNomenclatureAbout The AuthorWhen comparing two fundamentally different kinds of equipment, the normal approach is to use a basis of equal process performance. For an agitated tank, that can be complex. Do we use equal flow, equal blend time, equal solids suspension, or some other criterion? While exploring the data for this paper, it became apparent that equal process performance is, for all practical purposes, impossible to attain with a pump, when compared to an agitator.As an example, if the pump were required to proBuy Now

Flocculant Mixing Strength Mineral Processing Metallurgy

The flocculant day tank is equipped with a level gauge glass and overflows back to the flocculant holding tank. The flocculant holding tank is equipped with a pressure gauge, indicating relative solution level in the holding tank, and a high level switch, which will alarm on a high level condition.

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Take Mixing to the Max Chemical Processing

15/07/2003This 1 to 10 agitation scale is based on the impeller pumping capacity divided by the tank cross sectional area, resulting in a bulk fluid velocity. This velocity, in feet/minute (ft/min.), then is divided by 6 to obtain the scale of agitation. Whatever the origin or justification for this mixing intensity scale, the idea of a simple 1 to 10 range can be a useful method for describing mixing

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What is surface agitation? Why is it so important? That

So, once more, it is necessary to evaluate and execute the proper surface conditions. Without the essential level of surface agitation, the ability for the bacteria in the water to breakdown organic matter will be ineffective. This will cause the combined effects of increased carbon dioxide and water creating carbonic acid. Oxygen levels will deplete along with the deterioration in the quality

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Design of Multiple Impeller Stirred Tanks for the Mixing

In order to evaluate the performance of the agitation system, particle trajectories have been calculated and a simple quantitative statistical analysis of the results has been carried out. 2. Tank geometry The tank geometry employed in the work is a flat bottomed cylindrical tank with a diameter (T) set to

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How to eliminate powdery condition of Alodine 1200S

How to eliminate powdery condition of Alodine 1200S. Troubles with Alodine 1200s May 22, 2018. Q. Good Morning Summary of Problems Inconsistent coating, Salt Spray Failure, Powdery Finish, Clear Finish, Finish bouncing back and forth between extremes when troubleshooting or changing parameters.

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Analyse the Performance of the Hydraulic Agitation System

Alternative methods to evaluate the performance of agitation systems have been considered by different studies [4] and fall under two different approaches the assessment of liquid turbulence inside the tank using three electronic ow meters and measurement of the concentration of a solid tracer (glass microspheres) mixed in the water. [5

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Agitation an overview ScienceDirect Topics

Agitation of liquids can be discussed using stirred tank agitators as examples, since these devices are not only fairly well understood but also widely used. A stirred tank system consists of an impeller mounted on a shaft; the impeller rotates, immersed in a liquid contained in the tank. Mixing and dispersion are accomplished by dissipating mechanical energy through the impeller.

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Just for you For Chemical engineers(Mixing and Agitation

9/10/2008The tank contains four baffles, each having a width J of 0.15 m. The turbine is operated at 90 rpm and the liquid in the tank has a viscosity of 10 cp and a density of 929 kg/m3. a. Calculate the required kW of the mixer. b. For the same conditions, except for the solution having a viscosity of 100 000 cp, calculate the required kW.

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Oxygen mass transfer in a stirred tank bioreactor using

7/01/2013In this study, a miniature stirred tank bioreactor was designed for treatment of waste gas containing benzene, toluene and xylene. Oxygen mass transfer characteristics for various twin and single impeller systems were investigated for 6 configurations in a vessel with 10 cm of inner diameter and working volume of 1.77L.

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