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China’s first complete set of demonstration equipment for the dewatering and drying of liquid-containing waste solids in the coal chemical industry was successfully calibrated. Author/Source: Coal Chemical Industry Information Network. Date: October 29, 2019. Clicks: 6. From October 23 to 26, 2019, the China Petroleum and Chemical Industry Federation organized industry experts to conduct on-site calibration of China’s first such complete set of demonstration equipment. The expert group conducted an on-site inspection of the demonstration unit for the project (gasification filter cake dewatering and drying) built at the Ningdong Energy and Chemical Industry Base in Ningxia, and observed the actual operation of the unit’s processing processes such as feed filtration, diaphragm filtration, gas flushing, and vacuum drying ； Checked the original data records ； On-site inspections and calibrations were carried out for 72 consecutive hours on positions related to field operations, sampling, analysis, etc. The expert group agreed that the calibration tests were conducted at an average load of 100%; the feed volume per batch was 17.2 tons, with a moisture content of 81.94% in the feed and a moisture content of 29.03% in the output. The calibration results were accurate and valid, the equipment operated stably and reliably, and its performance parameters exceeded the design values. This device effectively solves the problem of secondary pollution caused by water and slurry leakage during the transportation of filter cakes from gasification units; it allows for the recovery of more water from the filter cakes, reduces the amount of waste material that needs to be transported, significantly lowers power consumption, keeps the work area clean, and is environmentally friendly. The expert group recommends accelerating the transformation of the project’s technological achievements into industrial applications in order to address the challenges related to the disposal of liquid and solid waste generated during coal gasification; it is estimated that there is great potential in the market ahead. The demonstration unit used for this calibration employs an integrated dehydration and drying technology jointly developed by Ningxia Shenyao Technology Co., Ltd. and Shanghai Fujie Environmental Protection Technology Co., Ltd.; it was put into stable operation in August 2019, and the dehydration-dried materials produced meet the design requirements. The moisture content of the waste solids treated by conventional vacuum belt filters is around 50%. The integrated technology for dewatering and drying combines functions such as filtration, pressure filtration, and heating under vacuum, enabling the moisture content of waste solids containing liquid to be reduced to 20–30%, which is a 15–20% reduction compared to belt filters; this approach effectively solves the problem of dewatering and drying waste solids with liquid content in industrial facilities ； It also saves filter cloth washing water (20t/h), **reducing the water consumption of the facility ； It can reduce water and electricity consumption by 50% compared to belt filters, enabling green and environmentally friendly production in the coal chemical industry.