R. I. 4733 - Pilot Plant Gasification of Pulverized Coal with Oxygen and Highly Superheated Steam

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Section 1 576kb	Summary and conclusions			1
	Introduction			1
	Acknowledgments			2
	Theoretical considerations affecting design of pilot plant, including a comparison of various coal-gasification systems			2
		Mechanism of coal-particle gasification		4
		Heat supply		5
		Extent of reaction		6
		Reactor design		7
		Original design and flow sheets		7
Section 2 1413kb		Discussion of subsidiary problems involved		8
	Description of pilot plant			10
		Royster pebble stoves and superheated-steam flow sheet		10
Section 3 867kb		Coal feeder and flow sheets		11
		Generator construction		12
		Dust train and flow sheet		12
		Modifications of unit for runs 15-25		13
		Modifications of unit for runs 26-31		13
	Procedures used			13
		Preliminary steam runs on Royster pebble stove		13
		First gasifying runs		14
		Superheated-steam runs (1-14)		14
		Low-temperature steam runs (15-25)
Section 4 758kb		Tests made using steam at 1,600º-2000º F. (runs 26-31)		17
	Results			18
		Calculated results of gasification runs		18
Section 5 2091kb		Oxygen requirement		27
		Slag distribution and generator brickwork condition		27
Section 6 819kb		Dust-removal and residue data		30
		Data on sulfur content of gases		30
	Accuracy of results			33
	Discussion of results			35
		Value of 2,900º F. steam for production of synthesis gas		37
Section 7 794kb	Plans for future pilot-plant operations			38
		Description of new apparatus and reasons for design		38
			Coal feeder	38
			Royster pebble stove	38
			Generator	39
			Dust-removal train	39
		Projected experimental work		41