article{osti_324735, title = {Indirect conversion of coal to fuel and chemicals by the Sasol slurry phase distillate process}, author = {Jager, B}, abstractNote = {Sasol was established in 1950 to convert low grade coal reserves into petroleum products and petrochemical feed stock. The first plant was commissioned in 1955 and two further plants followed in 1980 and 1982.
Abstract process schematic of syngas production pathway ... in the 1970's to convert coal to liquids and failed miserably. SASOL leads the way and should continue to do so, whether the feedstock ...
Coal utilization Gasification: While the goal of combustion is to produce the maximum amount of heat possible by oxidizing all the combustible material, the goal of gasification is to convert most of the combustible solids into combustible gases such as carbon monoxide, hydrogen, and methane. During gasification, coal initially undergoes devolatilization, and the residual char undergoes some ...
The influence of coal slurry concentration and oxygen/coal ratio on the syngas contents is studied as CO, CO 2 and H 2 contents can reveal the syngas quality. To enhance the gasification process and generate raw syngas with high quality, higher slurry concentration and oxygen supply is shown to be one of the suitable solutions.
Gasification is often considered the baseline technology and foundation for developing many advanced carbonbased fuels and chemicals. For example, gasification is the key conversion step for converting coal to H 2, Synthetic Natural Gas (SNG), liquid fuels, and the capture of CO 2 for sequestration.
CoaltoLiquids (CTL) is a process of converting coal to fuels such as diesel or gas. For diesel, the process involves first building a plant to convert coal to gas and then another plant to covert the gas to a liquid. ... Syngas (from synthesis gas [SNG]) ... Sasol currently operates the world's only commercial coaltoliquids facility at ...
Sasol Technology, RD Division, Syngas and Coal Technologies, P. O. Box 1, Sasolburg, 1947, South Africa Abstract Sasol has been operating the SasolLurgi fixed bed coal gasification process for ...
FischerTropsch (FT) synthesis is a heterogeneous catalytic process that converts biomassderived syngas (mixture of CO and H 2) to synthetic liquid fuels and valuable chemicals. FT synthesis has received renewed interest in recent years due to the necessity to decrease global dependency on fossil fuels. FT synthesis is a promising technology ...
option is to convert coal into high quality, clean burning transportation fuel. There are two commercially demonstrated routes for converting coal to transportation fuels through gasification (Figure 1). The widely known FischerTropsch process was first discovered in the 1920s. It has been commercially practiced by Sasol in several
A decrease in the pressure of the FischerTropsch synthesis from 2 to and MPa was shown to exert a detrimental effect on the catalytic performance of the process carried out with a ...
Sasol Limited is an integrated energy and chemical company based in Sandton, South company was formed in 1950 in Sasolburg, South Africa, and built on processes that German chemists and engineers first developed in the early 1900s (see coal liquefaction).Today, Sasol develops and commercializes technologies, including synthetic fuel technologies, and produces different liquid fuels ...
•Sasol's original coal to liquid plant at Sasolburg was commissioned in 1955 known as Sasol I (Dry Erasmus, 1987). •In the early 1980s, two large coal to liquid plants were commissioned in
23. FischerTropsch Process (FTP) It is an indirect route, coal is first gasified to make syngas . Next, FischerTropsch catalysts are used to convert the syngas into light hydrocarbons (like ethane) which are further processed into gasoline and diesel.
Although Sasol currently uses coal rather than natural gas to produce syngas, the feed to the GTL synthesis step is still syngas. Sasol, Mossgas (Pty.) Ltd. (OGJ, Dec. 6, 1999, p. 48), and Shell ...
SASOL: COAL TO FUEL PROCESS (GASIFICATION) ENCH4PP Nerrissa Ellappen : ... Remove contaminants in the feedstock and to produce a clean syngas product. Convert wastes or lowvalue ...
The main function of the gasifier is to convert solid coal into syngas. However, coal contains water in its pore structure, the amounts varying depending on the type of coal utilized. ... Today, the SasolLurgi coal gasification process is the world's most broadly utilized commercial technology and is the largest producer of syngas worldwide ...
Today Sasol produces the equivalent of 150,000 bbl/day of fuels and chemical feedstock from more than 40 million tons of low grade coal. In converting coal to petroleum products, coal is first gasified with oxygen and steam to syngas, a mixture of H{sub 2} and CO, which after purification is converted to hydrocarbons and some oxygenates by ...
Figure 1 shows a diagram depicting an estimate of global flows of fossil fuel feedstocks to chemicals production in 2013. Coal figures prominently in the flows to ammonia and methanol, which in turn feed into a wide range of plastics and chemicals; most of the coal use involves gasification to syngas on these conversion routes.
The FischerTropsch process (FT) is a collection of chemical reactions that converts a mixture of carbon monoxide and hydrogen, known as syngas, into liquid reactions occur in the presence of metal catalysts, typically at temperatures of 150300 °C (302572 °F) and pressures of one to several tens of FischerTropsch process is an important reaction ...
Such systems allow greaterthanequilibrium conversion of syngas to separate streams of CO 2 and H 2 in a single process step. This has the potential to replace the high and lowtemperature watergas shift process, and the solvent extraction and regeneration processes, with a single reactor unit offering a considerable decrease in both capital ...
In 1993, Sasol successfully proved its low temperature FischerTropsch (LTFT) technology with an ironbased catalyst to convert coalderived syngas to liquid products. The plant is a relatively small scale, 2,500 bpd commercial facility that was recently converted to use natural gas as feed.
Today Sasol produces the equivalent of 150,000 bbl/day of fuels and chemical feedstock from more than 40 million tons of low grade coal. In converting coal to petroleum products, coal is first gasified with oxygen and steam to syngas, a mixture of H{sub 2} and CO, which after purification is converted to hydrocarbons and some oxygenates by ...
Coal can also be liquefied directly, without going through the production of synthesis gas. This process is termed coaltoliquid (CTL) and is a reasonably mature technology. The process typically uses the technique of heating under pressure (up to 470°C, 200 bar) and hydrogenation where hydrogen is added to a coalwater slurry. The slurry ...
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