Preheater for the coal chamber at (the proposed plant) Gladbeck

Technical Report · Wed Mar 11 04:00:00 EDT 1942

OSTI ID:6461236

A series of three tables and three graphs are given, with one table and one graph concerning each of three possible arrangements for the coal chamber: a three-oven chamber without heat exchange for heating coal paste, a three-oven chamber using heat exchange to heat coal paste, and a four-oven chamber using heat exchange to heat the paste. The first case would require a preheater with 34 hairpin tubes, the second would require two paste heat exchangers and a preheater with 22 hairpins, and the third would need three paste heat exchangers and a preheater with 28 hairpins. The third case was based on an estimated throughput of 55 (metric) tons/hour of coal paste and 90,000 m/sup 3//hr of gas, as well as a gas blower yielding 125,000 m/sup 3//hr and a pressure drop of 200 to 220 mm of water column, whereas the first two cases were based on throughputs of 45 tons/hr and smaller amounts of gas. The respective coefficients of heat transfer for the heat exchangers were estimated at 152, 180 and 146 Cal per degree C per m/sup 2/ of surface area per hr. The preheaters generally were to be divided into a small section of gas hairpins, a section for heating the thick paste, and then a section for heating the mixture of thin and thick paste. As an example of the type of data given, the following values pertain to the third case: The thin paste was to be heated from 115/sup 0/C to 395/sup 0/C by heat exchange, whereas the hydrogen gas was to be heated from 40/sup 0/C to 130/sup 0/C in the gas hairpins, after which it was to be mixed with the thick paste at 105/sup 0/C and the mixture heated from 109/sup 0/C to 300/sup 0/C in the thick-paste section, after which the thin paste was to be mixed in and the mixture heated from 356/sup 0/C to 425/sup 0/C in the mixed-paste section. The respective heat-transfer coefficients for the three sections of this preheater were 9.8, 5.5, and 6.65 Cal//sup 0/C/m/sup 2//hr. 3 graphs, 3 tables

• Research Organization: Hydrierwerke Scholven, A.G., Buer (Germany)
• OSTI ID: 6461236
• Report Number(s): TOM-11-366-374
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
BERGIUS PROCESS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
COAL LIQUEFACTION PLANTS
COAL PASTES
COMPARATIVE EVALUATIONS
DATA
DATA COMPILATION
DATA FORMS
DESIGN
DIAGRAMS
EFFICIENCY
ENERGY SOURCES
ENERGY TRANSFER
FEASIBILITY STUDIES
FLUIDS
FOSSIL FUELS
FUELS
GASES
GERMANY
HEAT FLOW
HEAT TRANSFER
HEATING
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGENATION
INDUSTRIAL PLANTS
INFORMATION
LIQUEFACTION
MODIFICATIONS
NUMERICAL DATA
PHYSICAL PROPERTIES
SPECIFICATIONS
SYNTHETIC FUELS
TABLES
TEMPERATURE DISTRIBUTION
THERMAL EFFICIENCY
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES