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Arpana Jain

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  1. View this quiz Furnace Technology Quiz 3 Lets check your knowledge on Furnace Technology.Take quiz on it and check your command on the topic Encourage your friends do same . Submitter Arpana Jain Time 10 minutes Type Graded Mode Submitted 05/18/2017 Category Chemical engineering quiz  
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    Lets check your knowledge on Furnace Technology.Take quiz on it and check your command on the topic Encourage your friends do same .
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    Lets check your knowledge on Petroleum Refinery Engineering .Take quiz on it and check your command on the topic Encourage your friends do same .
  2. View this quiz Petroleum Refinery Engineering quiz 3 Lets check your knowledge on Petroleum Refinery Engineering .Take quiz on it and check your command on the topic Encourage your friends do same . Submitter Arpana Jain Time 10 minutes Type Graded Mode Submitted 05/18/2017 Category Chemical engineering quiz  
  3. View this quiz Petroleum Refinery Engineering quiz 2 Lets check your knowledge on Petroleum Refinery Engineering .Take quiz on it and check your command on the topic Encourage your friends do same . Submitter Arpana Jain Time 10 minutes Type Graded Mode Submitted 05/18/2017 Category Chemical engineering quiz  
    • Graded Mode
    • 10 minutes
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    Lets check your knowledge on Petroleum Refinery Engineering .Take quiz on it and check your command on the topic Encourage your friends do same .
  4. What are some good tank mixing rules of thumb? For fluid with viscosities under 10,000 Cp, baffles are highly recommended. There should be four baffles, 90 degrees apart. The baffles should be 1/12th the tank diameter in width and should be spaced off the wall by 1/5th the baffle width. The off- wall spacing helps to eliminate dead zones. If baffles are used, the mixer should be mounted in the vertical position in the center of the tank. If baffles are not used, the mixer should be mounted on an angle, ~15 degrees to the right and positioned off center. This breaks up the symmetry of the tank and simulates baffles although not nearly as good as baffles. The purpose of baffles is to prevent solid body rotation all points in the tank are moving at the same angular velocity and no top to bottom turnover. The formation of a large central vortex is a characteristic of solid body rotation. However, small vortices that travel around the fluid surface, collapse, and reform are more a function of the level of agitation.
  5. What is the difference between CFM (cubic feet per minute) and SCFM (standard cubic feet per minute)? CFM and SCFM are both measures of flow rate. CFM might refer to either the flow rate of a gas or a liquid, whereas SCFM refers only to the flow rate of a gas. The same mass flow rate of a gas (i.e., lbs/minute) is equivalent to various volumetric flow rates (i.e., CFM) depending upon the gas pressure and temperature. Thus, when gas flow rates are specified, it is very important to specify at what pressure and temperature the gas was measured. When the gas flow rate is specified as SCFM, it means that the flow rate was measured at a set of standard pressure and temperature conditions. In the USA, the most common set of standard conditions used in industry is 60 degrees Fahrenheit and one atmosphere of pressure. Note that we have stressed most common, because there are other standard conditions that may be used. It is always best to spell out what standard conditions are being used (i.e., 1200 SCFM at 60 degrees F and 1 atmosphere pressure). When gas flows are expressed simply as CFM, the reader is can only speculate as to what gas temperature and pressure apply to that flow rate … and, because of that, the CFM flow rate cannot be converted to a mass flow rate
  6. What are flameless oxidizers? Flameless oxidizers are used to treat volatile organic compounds (VOC) and liquid organic streams. Traditionally, these types of streams were combusted to break down the molecules. The disadvantage of this treatment method was the formation of NOx. Flameless oxidizers use electrically heated ceramic packing and a high velocity introduction system to initiate the destruction of the organic compounds into carbon dioxide and water. Once this oxidation reaction begins, it continues via self-perpetuation. Capital cost for such systems are usually about 25% less than traditional combustion systems and capacities can range from 250 to 40,000 SCFM (standard cubic feet per minute). Thermatrix Inc. is the pioneer for this technology.
  7. What particle sizes are electrostatic precipitators used to remove?
  8. Is there any way to remove residual product left in pipes after a batch operation? OEG Company in Osaka, Japan commercialized a device called Pushkun that runs through pipes and “pushes” out left over product. The system is particularly valuable in batch operations where product recovery is chief concern. The manufacturer claims that at one installation, the system paid for itself in four months through product recovery. System costs depend on the scale of the system, but are typically around $10,000 US (1998).
  9. While there, are many tests available to detect leaks on vessels, is there a technology available to quantify the leak, or measure the flow through a leak?
  10. Separation technique - chromatography

    In this section we will learn separation technique chromatography by visualization .
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