Hydrogasification process

Table 18. Gas Composition and Yield from Integrated Hydrogasification Process at Stage T...

In ensuing catalytic stages, usually termed hydrogasrfication and methanation (not to be confused with the noncatalytic, direct hydrogasification processes... 

Hydrogasification Process), Final Report HYGAS 381, Washington, ID.C. 

Hydrogasification Process, Amer. Chem. Soc., Div. Fuel Chem. Prepr. 10, 235-245 (1966) September. 

The concept is a dilute-phase hydrogasification process in which coal is directly reacted with hydrogen to produce maximum yield of methane in the reactor. We are not, as an organization, competitive with industry either in hardware or in process work. 

Exergetic analysis of a coal hydrogasification process as an example... 

Figure 4. Relative exergy losses of some units of the coal hydrogasification process (m = n /n at the inlet of the steam reformer). H2° CH4...

Tsatsaronis, P. Schuster, H. R6rtgen "Exergy Analysis of the Nuclear Coal Hydrogasification Process , Thermodynamic Availability Symposium, AICHE Annual Meeting, Detroit, Michigan, August 16-19, 1 81. 

G. Tsatsaronis, P. Schuster, H. R5rtgen "Thermodynamic Analysis of a Coal Hydrogasification Process for SNG Production by using Heat from a High-Temperature Nuclear Reactor, 2nd World Congress of Chemi-cal Engineering, Montreal, Canada, October 4-9, 1981, Vol. II, pp. 4o1-4o4. 

Subsequent investigations, including IINS, were carried out to characterize the various resistances of such cokes to controlled after-treatments, such as oxidation or hydrogasification processes, as a basis for determining the feasibility of catalyst reactivation. The presence of metallic contaminants (iron, cobalt, and nickel) was of relevance, not only to the deposition of cokes and the catalytic transformation of the carbon structure, but also to the dynamic processes in the controlled decomposition of the material in catalyst regeneration procedures 50). 

Anonymous "HYGAS 1964-1972, Pipeline Gas from Coal-Hydrogenation (IGT Hydrogasification Process)" Final Report OCR Contract 14-01-0001-381, 1975, 1-4. 

As was the case with the mentioned hydrogasification process, the results obtained with HTW gasification did not show any statistically significant correlations between the petrographi-cal composition of the lithotypes and their gasification behaviour. 

The hydrogasification process is more coirqiact, and has fewer con onents than competing processes. 

ECN has defined an RD D programme for SNG production by biomass hydrogasification process, with the objective to prepare a future demonstration in The Netherlands. The first phase of this programme comprises an assessment of technical and economic prospects of the concept. 

In the hydrogasification process the coal is treated in three successive stages ... 

Figure I. Block-flow diagram of IGT coal hydrogasification process...

Evaluation of commercial catalysts showed that nickel-on-kieselguhr catalyst is more active than nickel-on-alumina, iron, and ruthenium catalysts for cleanup of CO in IGTs hydrogasification process. Longer chained hydrocarbon formation is much less than expected for tests with iron and ruthenium catalysts. 

Reactors may also be designed to operate either at atmospheric pressure or at high pressure. In the latter type of operation, the hydrogasification process is optimized and the quality of the product gas (in terms of heat, or Btu, content) is improved. In addition, the reactor size may be reduced and the need to pressurize the gas before it is introduced into a pipeline is eliminated (if a high-heat-content gas is to be the ultimate product). However, high-pressure systems may have problems associated with the introduction of the coal into the reactor. 

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