Semicoke is used for gasification
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What are the processes in which semi-coke is used for gasification? What about the cost-effectiveness?
I remember it was used for fixed-bed gasification of small nitrogen fertilizers in the past
Fixed-bed gasification is definitely no problem; it seems that experiments have also been conducted on water-coal slurry in China. Economics is mainly related to your coal price. It is estimated that graded utilization of coal would yield better economic performance.
This is a very meaningful task; I wonder who is doing it all – let’s talk about the results
Hōki is also used in fixed-bed gas generation
Fengxi is used for water-coal slurry.
The Pulverized Coal Gasification Center at the Institute of Coal Chemistry, Chinese Academy of Sciences has been conducting semi-industrial demonstration experiments on semi-coke using ash-polymerized fluidized-bed gasifiers over the past three years, with pressures reaching 3.0 MPa. The semi-coke used is Shenmu semi-coke, and the diameter of the gasification furnace is 800. The effect is good; it enables effective reuse of the semi-coke by crushing it to 0-6 mm
Semicoke has been used in water-coal slurry gasification units since 2012; at that time, Shenhua Mengdong upgraded coal was used, and there were no issues with that – the concentration must have been quite high. Nowadays, some projects are utilizing semicoke for water-coke slurry gasification.
At Shanxi Fengxi, semi-coke gasification is carried out in Plant 1; Plant 2 uses pressurized coal slurry gasification. There are 3 Texaco gasifiers and 1 Yingde Qingda water-cooled wall gasifier, with the system operating at a pressure of around 4.0 MPa