Modern Gasworks Practice

INDEX 813 Telphers, for coke, 326 horse power required for, 328 junction switohes for, 331 skips for, 330 speed of, 330 Temperature, combustion chamber, 63 fuel bed in retort producer, 63, 65, 66 influence on purification, 577, 581 instruments for measuring, 229 in vertical retorts, 433, 434 in water gas carburettor, 423, 716, 726 in. water gas generator, 423, 693, 716 in water gas superheater, 423, 716, 726 maximum combustion, 143 retort, 63, 411, 433 retort settings, 209 throughout coal charge, 432, 433 waste gases, 64 Tervet’s theory, 389 Test, for gas oil, 729 for hydrocyanic acid, 566 for naphthalene, 475 for producer gas, 129 Tetrathionate process (Feld), 544 Therm, 6, 7, 13, 788, 789 Capital expenditure per, 25, 34 cost of producing by various processes, 415,762 Thermal efficiency of various gasmaking processes, 759, 760 Thermo-couple, 235, 240 Thermo-electrio pyrometers, 235 Thermometers, various, 229 Thiophen in coal gas, 614 Thomas, J. S. G., 462 Toluene, in coal gas, 413, 422 recovery by stripping, 423, 432, 470, 732 resulting from degradation, 410 Towers, tar, 263, 271 Tridymite, 198 Tri-Gas plant, 768 Trinitrotoluene, war output of, 4 Tully, C. B., 747 Tully complete gasification plant, 775, 776 Twaddell density scale, 790 Units of sulphur in spent oxide, 586 Unoxidized hydrogen, 359, 385 Unsaturated hydrocarbons, 399 composition of in coal gas, 421 effect of steaming on, 429 in coal gas, 413, 420 in complete gas, 757 in mixed coal and water gas, 420, 736 in water gas, 736, 738 V.S. Bureau of Mines, 66 Unwin’s formula for flow of gas in pipes, 792 Vacuum, at exhauster inlet, 479 control by Reflux Pressure System, 270 in hydraulic main, 411, 417 regulation by retort house governor, 275 regulation of on retorts, 134 Valves, centre, 607 for purifiers, 607 for reversing flow of gas, 582 rack and pinion, 608 water type, 609 weir, 263 Vapour pressure of ammonia, 502 of naphthalene, 462 Vapours in coal gas, 413 Vertical retorts, advantages of, 146 Central system, 178 coke used for fuel in, 61, 62, 427 Dempster-Toogood system, 169 downward steaming in, 166 effect of steaming charge, 424 Elland system, 166 Glasgow system, 169 Glover-West system, 155 Herring’s system, 172 Holmes-Winstanley system, 174 Intermittent system, 160 temperatures in, 433, 434 thermal efficiency of carbonization in, 760 travel of gas in, 434 various types, 145 with intemal heating flue, 180 Woodall-Duckham system, 148 yield from, 18 Virgin liquor, 398 Volts, 354 Walker and Bates’ vertical retort, 180 Waller’s exhausters, 481, 496 waste heat boiler, 93 Wanner pyrometer, 232 War service of gas industry, 4 Washers, 20 Cockey’s, 511 Dempster’s, 510 for coal, 366 Livesey, 509 Multiple, 512 operation of, 507 Walker’s, 513 Washer-scrubbers, centrifugal, 518 Clapham’s, 519 Eclipse, 517 Feld’s, 522 Holmes, 518 horse power required for, 521 Kirkham’s, 515, 520 size of, 20