Methods, systems for dehydrating gasification fine slags, and media thereof

A method for dehydrating a gasification fine slag based on multi-energy field gradient processing intelligent decision, wherein the method is performed by a processor controlling a dehydration device and/or a detection device, the dehydration device includes an ultrasonically coupled vacuum dehydration device, a vibratory hot press dehydration device, and an ultrasonically coupled evaporative drying device, the detection device is configured to detect physical properties and/or chemical properties of a gasification fine slag to be dehydrated, the method comprising:

• S1:
• for any gasification fine slag to be dehydrated, a first dehydration mode is selected first:
• S11:
• the detection device is controlled to determine a moisture content W, an average particle size D, a pore volume V, and a dry basis ash content Ash of the gasification fine slag to be dehydrated, and a judgmental characteristic index x of the dehydration mode is calculated based on a detection result obtained from the detection device through the following formula:
• x
• =
• W
• V
• ⁢
• (
• D
• 50
• )
• 1.16
• ⁢
• (
• Ash
• 0.6
• )
• 1.32
• S12:
• a corresponding first dehydration mode is selected from a preset database based on the calculated judgmental characteristic index x of the dehydration mode, wherein the preset database being stored in the processor and/or other storage devices to which the processor is communicatively connected, and the preset database includes at least one or more preset dehydration mode:
• when x>7, the gasification fine slag enters the ultrasonically coupled vacuum dehydration device for dehydration;
• when 7≥x>3, the gasification fine slag enters the vibratory hot press dehydration device for dehydration;
• when x≤3, the gasification fine slag enters the ultrasonically coupled evaporative drying device for dehydration;
• S2:
• after a first dehydration process is completed, the detection device is controlled to detect a residual moisture content of the gasification fine slag and compare the residual moisture content of the gasification fine slag with a set dehydration value, and if dehydration requirements are satisfied, a dehydration task is ended;
• otherwise, the judgmental characteristic index x of the dehydration mode is calculated again, and the dehydration mode is selected according to a condition of S12 to continue dehydrating until the gasification fine slag satisfies the dehydration requirements.