Find Docs - Refinery Definitions (Page 4)

Wodocs >> Science : Chemistry >> Refinery Definitions Page 4 - Refinery Definitions
35. HEAT EXCHANGER - A piece of equipment having a tubular piping
arrangement which effects the transfer of heat from a hot to a relatively cool
process stream by conduction through the tube walls.
36. HYDROMETER - A graduated instrument used in determining API or Baume
37. IMPELLER - The moving part of a centrifugal pump or compressor which
consists of a set of vanes attached to a central hub.
38. IMPINGEMENT - The contact of flame with the tubes in a furnace, usually
39. FORCED DRAFT - Air supplied to a furnace, cooling tower, or exchanger, by
means of a fan or blower, which force air through the equipment.
40. INDUCED DRAFT - Air supplied to a furnace, cooling tower, or exchanger, by
means of a fan or blower, which pulls air through the equipment.
41. INERT GAS ­ Un reactive; will not support combustion. In refinery use is
generally nitrogen or CO2 (carbon dioxide) (flue gas).
42. INHIBITOR - A chemical additive put in oils to prevent or slow down unwanted
reactions, usually oxidation or gum formation. A chemical added to cooling towers
or process stream to prevent corrosion.
43. INSULATION - A material applied to equipment to prevent the transfer of heat.
44. MERCURY - An element; a silver colored liquid at ordinary temperatures used
extensively in instruments: thermometers - manometers - gauges, etc. It is a great
deal heavier than water, having a specific gravity of 13.5.
45. METER CONSTANT - The numerical constant which must be multiplied by the
number of meter divisions to determine the flow through the meter.
46. MOLECULE - The smallest unit into which a substance can be divided and retain
all of its chemical and physical properties.
47. MOLECULAR WEIGHT - The sum of the atomic weights of the atoms in a
molecule. Example: methane (CH4) (Carbon 12) (Hydrogen 1) = 12 + 4 = 16.
48. ON STREAM - The period of time a refinery processing unit is in actual
49. ORIFICE - A device to restrict the flow through a pipe line.
50. ORIFICE METER - An instrument which measures the flow through a pipe by
means of measuring the difference in pressure on the upstream and downstream
sides of an orifice plate.
51. OUTAGE - The distance from the top of a container to the surface of the liquid in
the container.
52. PISTON - A cylindrical device which reciprocates in a cylinder, causing fluid to
enter and leave the cylinder.
53. PREHEAT - Heat added to a fluid prior to an operation performed on that fluid.
54. PRESSURE DROP - The decrease in pressure, due to friction, which occurs when
a liquid or gas passes through a pipe, vessel, or other piece of equipment.
55. PARTIAL CONDENSER - A condenser (heat exchanger) sometimes located at
the top of the tower that furnishes sufficient cooling to condense a part of the
overhead vapors.

<< Previous       1 2 3 4 5 6 7       Next >>

Other Documents:
gtc opr, oppexxrev 2, Cooling Tower Monitoring 10, Testing MVGT, longisland EEO Public Report 04, wbab snapshot, wbabcom advertising information, Michigan Region EEO, contestrules, media kit, Underwriting Kit, Annual Report 2004, Fall Focus 04. P 65, drisfocus, 04EEO, 05EEO, paraderules, parkinganddirections, Kick back in Colorados Catalogue, HFT, AVCJ May VQ, Broad Auth v 1w, csrreport 2001, ebpcstatementfinal, Act Coordination, Act RTD, Act Training, ECNanomaterials, Knowledge Dissemination, Nano Societal Infobase, Project Leaflet, Training Program, EEO 2005, barbeque sign, pc submit 2007, sheddy, wmj 20030210, wmj 20030217, wmj 20030505, order Form, MSE 2 Materials Engineer, AP 2002 4th Qtr, RE Fin Terms Dnvr 2000 3rd Qtr, RE Inv Criteria Dnvr 2000 3rd Qtr, RE Mkt Cond Dnvr 2000 4th Qtr, February 2003, Mechanomade Nanostructured Powders Listino, Powders, featured appraisal problem 1031 exchange value of building under construction, featured appraisal problem high value properties,

WODocs | |
All rights reserved. wodocs.comİ 2009

New Docs

Documents Category:
Arts (Design, Movies, Music, Radio, Television)
Automotive (Cars, Marine, Motorcycle, ATV, Snowmobiles)
Business (Biotechnology and Pharmaceuticals, Chemicals, Construction and Maintenance, Materials, Real Estate, Services)
Electronics (Computers, Motion Control, Power Supply)
Games (Board, Family, Party, Card, Construction, RC Toys)
Health (Animalm, Beauty, Healthcare, Medicine, Pharmacy, Surgery, Weight Loss)
Home (Accessories, Cooking, Decor and Design, Electrical, Family, Pets)
News (Newspapers, Sports, Television)
Recreation (Collecting, Hiking, Scouting, Survival, Travel)
Reference (Education, Libraries and Archives, Museums)
Science (Agriculture, Astronomy, Biology, Chemistry)
Shopping (Antiques and Collectibles, Clothing, Flowers, Food, Home and Garden)
Sports (Bicycle, Snowboard, Skiing, Other)