The present disclosure provides a method, a system for dehydrating a gasification fine slag, and a medium thereof. The method is performed by a processor controlling a dehydration device or a detection device, and the detection device is configured to detect at least one of physical properties or chemical properties of a gasification fine slag to be dehydrated. The method includes controlling the detection device to determine characteristic parameters of the gasification fine slag to be dehydrated, and determining a judgmental characteristic index of a dehydration moder of the gasification fine slag to be dehydrated. The method includes determining a target dehydration device and controlling the target dehydration device to dehydrate the gasification fine slag to be dehydrated. The method further includes controlling the detection device to determine a residual moisture content of a dehydrated gasification fine slag, and determining whether to end a dehydration task.

Embodiments of the present disclosure related carbon-based structural unit (CSU). The CSUs include a cured composition. The cured composition includes about 1% to about 80% pyrolysis char (PC), about 0.1% to about 35% coal deposits, extracts, and residual tar (CDER) materials, and about 0% to about 99% pitch material. The CDER material includes a tetralin insoluble (TI), a deposit (De), a distillation residue (DR), and a residue (Re). A method of making a composition includes extracting a coal extraction residue (CER) from coal; fabricating pyrolysis char (PC) and a coal deposits, extracts, and residual tar (CDER) material from the CER; sieving and milling the PC into milled PC; and mixing the pyrolysis char (PC) and the CDER material to form a composition.

Embodiments of the present disclosure related methods of pre-coating pyrolysis char for use in pyrolysis char bricks. In one method, the method includes forming a cement paste using water and a cement material; soaking a pyrolysis char (PC) in the cement paste to create a coated pyrolysis char (CPC); and sieving the CPC and cement paste with a mesh. In another embodiment, the method includes mixing a PC with a cement material to form a dry mixture; spraying water onto the dry mixture of the PC and the cement material to form a wet mixture; stirring the wet mixture to form a CPC; and drying the CPC. In another embodiment, the method includes soaking a PC in water to form a soaked PC; sieving and vibrating the soaked PC to remove excess water, mixing a cement material with the soaked PC to create a CPC; and drying the CPC.