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Installation of 6 key equipment in the air separation system for Zhongtai Coal Coking’s 200,000 tons/year methanol project completed Author/Source: Henan Petrochemical News Date: June 19, 2020 Clicks: 1 On June 18, the author learned from Zhongtai Coal Coking that 6 pieces of equipment, including air cooling towers and water cooling towers, as part of the air separation system for its 200,000 tons/year methanol production project from coke oven gas, have been successfully installed. It is reported that the 6 units in question are an air-cooled tower, a water-cooled tower, 2 molecular sieve adsorbers, an instrument air buffer tank, and a nitrogen buffer tank – all of which are important components of the entire air separation plant. The tallest of these units is 22 meters high, and the heaviest one weighs 23.24 tons. They are designed as vertical cylindrical structures; the gas and liquid come into direct contact within the cooling towers, which are also equipped with efficient distributors to prevent water contamination as well as mist removers. It mainly involves cooling and purifying the air compressed by the air compressor in the air separation unit before feeding it into the distillation tower, thereby producing high-purity oxygen and high-purity nitrogen. It is understood that all 6 pieces of equipment, including air cooling towers and water cooling towers, were delivered as complete units. They have large dimensions, heavy weights, and a large lifting radius, which makes the lifting of such large-scale equipment challenging and requires high safety standards. To ensure the successful completion of this lifting operation, the owner worked together with the general contractor, supervisor, construction unit, and lifting specialists to make careful plans. They studied and refined the lifting plan on multiple occasions, selected the most suitable personnel and equipment, and ensured that all aspects of construction preparation and site preparation were flawless. In particular, detailed calculations were carried out regarding the selection of steel cables and the location of the lifting station. At the installation site, a 200-ton crane was used as the main lifting device, along with a 55-ton crane as an auxiliary one; manual alignment and positioning were also employed to overcome the challenges posed by the precise dimensions, complex structure, and limited installation space of the air cooling tower. Ultimately, after 12 hours of continuous effort, it was successfully lifted into place.