1463. ---------------. [HOLLINGS, H.] Wintershall A.-G., Lützkendorf. CIOS Rept. XXXII-90, 1945, 37 pp.; PB 2,233; Bureau of mines Inf. Circ. 7369, 1946, 21 pp.; TOM Reel 197.

Return to Abstracts of Literature 1250-1499

Literature Abstracts

1463. ---------------. [HOLLINGS, H.] Wintershall A.-G., Lützkendorf. CIOS Rept. XXXII-90, 1945, 37 pp.; PB 2,233; Bureau of Mines Inf. Circ. 7369, 1946, 21 pp.; TOM Reel 197.

Report deals with the Schmalfeldt gasification plant for making synthesis gas, the Fischer-Tropsch plant, the hydrogenation plant, and the catalyst factory and includes a report on lubricating oil from Hanover and Austrian crude. The Schmalfeldt gasification process consists of gasification of brown coal in the entrained state by hot (1,000°) recycled synthesis gas. The plant was intended to supply synthesis gas for the Fischer-Tropsch plant, but later a hydrogenation plant was added and the gas requirement increased. The original designed output per gasifier unit (2 generators in series) was 20,000 m.³ per hr. This was increased to 30,000 m.³ by the use of O₂. The gasification period was 4.5 sec. at 30,000 m.³ of gas per hr. and 6.0 sec. at 20,000 m.³ In addition to 4 gasifier units, there were 5 producer units, each making 30,000-35,000 m.³ of gas per hr. The gasification time was 11 sec. Producer gas also was made by gasification of entrained brown-coal dust, but without recycling of gas or the use of O₂. A mixture of gases was used to heat the gasification units (for each unit 24,000 m.³ per hr., consisting of 3,000-4,000 m.³ of rest gas from the Fischer-Tropsch plant and 21,000-20,000 m.³ of producer gas). The composition of the synthesis gas with and without O₂ was, respectively: CO, 25 and 28%; H₂, 50 and 56%; CO₂, 18 and 10%, CH₄, 3.5 and 3%, N₂, 3.5 and 3%. The H₂ for the hydrogenation plant came from the Wintershall generators. The cost of raw water gas is given as 2.70 pf. per m.³ and of H₂, 7.30 pf. per m.³ The Fischer-Tropsch plant consisted of 144 catalyst chambers, generally worked in 2 stages with a 1-stage conversion of about 50%. In 1940 and 1941 yields were 130 gm. per m.³ of synthesis gas by changing the catalyst every 1.5-2 mo. Total annual production was about 30,000 tons. The catalyst (Co, 100 parts; MgO, 10; ThO₂, 5; with 1.7-2.3 lb. of kieselguhr per lb. of Co) was made and regenerated in an adjacent catalyst factory. Gives details of the method and of the operation of the plant, which hydrogenated the residues from the lubricating oil plant. A table showing capital costs, broken down for the various plants, is presented.