Figure 1: Simplified F-T Synthesis-based Production Scheme The production facility is supported by several utility plants, including the power train. The reaction products, along with that from the upgrading section, are fractionated into the final products of diesel, naphtha, and other light ends, depending on the desired product mix. A hydrogen recovery unit is used to extract the required quantity of hydrogen from the tail gas as shown, or alternatively from the feed syngas stream. The wax is sent on to an upgrading unit for hydrocracking in the presence of hydrogen, where it is chemically split into smaller molecular weight hydrocarbon liquids. The clean syngas leaving the gasification island is sent onto the FT synthesis island, where the clean shifted syngas is converted into primary products of wax, hydrocarbon condensate, tail gas, and reaction water. The gasification island consists of all the supporting process technologies of coal handling & feed preparation, heat recovery, syngas cleanup and conditioning, water-gas-shift, sulfur recovery, etc.
#Doe b ft ti why download cracker
Several world-class GTL and CTL plants are currently at various stages of engineering, construction, and production in Nigeria, Qatar and China, and most recently in the United States as well with the announcement of front-end engineering and design on Sasol's Lake Charles Gas-to-Liquid (GTL) and Ethane Cracker Complex in Louisiana.įigure 1 shows a simplified block flow diagram of a process incorporating FT synthesis. Examples of current operating CTL plants include Sasol's Sasolburg I and II plant, and an example of a GTL FT process is Shell's plant in Bintulu, Malaysia. Depending on the source of the syngas, the technology is often referred to as coal-to-liquids (CTL) and/or gas-to-liquids (GTL). Since then, many refinements and adjustments to the technology have been made, including catalyst development and reactor design. Later, facing isolation during the apartheid era, South Africa turned to FT synthesis from coal gasification to supply significant quantities of its hydrocarbon fuel and chemical needs. During World War II, FT synthesis provided the needed liquid hydrocarbon fuels for the German war effort.
Liquid transportation hydrocarbon fuels and various other chemical products can be produced from syngas via the well-known and established catalytic chemical process called Fischer-Tropsch (FT) synthesis, named after the original German inventors, Franz Fischer and Hans Tropsch in the 1920s.
0 kommentar(er)
