The Smokeless Combustion of Coal in Boiler Plants: With a Chapter on Central Heating Plants |
Common terms and phrases
air admission operated anthracite arch automatic air admission Average Babcock & Wilcox bed rock Bituminous black smoke boiler horsepower bornite briquets British thermal units brown peat calcite Caney shale cent black chalcocite chalcopyrite Chitina Chitina River Chitistone limestone Coal burned coke combustion Copper River country rock Creek Dampers open Dark-brown deposits depth diameter draft fault fire Fortymile fuel Gastrioceras genus Glacier gold Goniatites grate gravels greenstone heating surface Hole horsepower inch Kotsina River limestone load locality locality.-Caney shale machine peat miles minerals moss Nizina observations at plants Original of figure peat portion pounds quadrangle station quartz railroad Rear of boiler region schist sedges shale shell short tons side slack species specimen sphagnum square feet stack steam jets stoker striæ TABLE tests thermal value thickness tion tons Triassic tubes umbilicus underlain valley valve veins ventral water-tube water-tube boilers yards
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Page 183 - Experimental work conducted in the chemical laboratory of the United States fuel-testing plant at St. Louis, Mo., January 1, 1905, to July 31, 1906, by NW Lord.
Page 20 - SCHRADER, FC, and SPENCER, AC The geology and mineral resources of a portion of the Copper River district, Alaska.
Page 5 - The specifications become part of the contract, and the standards of quality form the basis of payment for coal delivered during the life of the contract. For coal delivered which is of better quality than the standard, the contractor is paid a bonus proportional to the increased value of the coal. For deliveries of coal of poorer quality than the standard, deductions are made from the contract price proportional to the decreased value of the coal. The actual quality and value of coal delivered is...
Page 16 - The economic value of a fuel is affected by the actual amount of combustible matter it contains, as determined by its heating value shown in British thermal units per pound of fuel, and also by other factors, among which is its ash content. The ash content not only lowers the heating value and decreases the capacity of the furnace, but also materially increases the cost of handling the coal, the labor of firing, and the cost of the removal of ashes, etc.
Page 183 - BULLETIN 332. Report of the United States fuel-testing plant at St. Louis, Mo., January 1, 1906, to June 30, 1907; JA Holmes, in charge. 1908.
Page 6 - Provided, That in examinations. hereby authorized, of fuel materials for the use of the Government of the United States, or for the purpose of increasing the general efficiency or available supply of the fuel resources in the United States, the Director of the Geological Survey may have the necessary materials collected from any part of the United States where they represent extensive deposits; and it shall be the duty of the Director of the Geological Survey to have examined, without charge, the...
Page 8 - British thermal units per hour. It is also practically equivalent to an evaporation of 30 pounds of water from a feed-water temperature of 100 degrees Fahr. into steam at 70 pounds gauge pressure...
Page 15 - ... a prohibitive amount of smoke. It is understood that the coal delivered during the year will be of the same character as that specified by the contractor. It should, therefore, be supplied, as nearly as possible, from the same mine or group of mines. Coal containing percentages of volatile matter, sulphur, and dust higher than the limits indicated on page...
Page 183 - Geological Survey, Washington, DC The priced publications may be purchased from the Superintendent of Documents, Government Printing Office, Washington, DC Certain of the geologic folios also contain references to oil, gas, and asphaltum.
Page 13 - ... as rapidly as possible until none of the fragments exceed one-half inch in diameter. The fine coal will then be mixed thoroughly and divided into four equal parts. Opposite quarters will be thrown out, and the remaining portions thoroughly mixed and again quartered, throwing out opposite quarters as before. This process will be continued as rapidly as possible until the final sample is reduced to such amount that all of the final sample thus obtained will be contained in the shipping can or jar...