Pre-assembled process module unit of an ethane cracker unit, containing:equipment associated with an external multi-stage, centrifugal cracked gas compressor which compresses hydrocarbon gases to allow further processing downstream in interconnected equipment containing: -coolers, -vapor-liquid separation drums, and -pumps needed to condense and remove water and heavier hydrocarbons and to avoid undesirable formation of polymer by-products, equipment associated with an external caustic wash tower containing: -caustic water circulation pumps to support an external caustic wash tower in removing acid gasses (carbon dioxide and hydrogen sulphide) from the cracked gas, -a spent caustic pre-treatment system, containing separation drums, pumps and mixers, -a heat exchanger for the pre-cooling of cracked gas, and -a separation drum for the removal of water from cracker gas

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Parent HS6: 841989 Machinery, plant and laboratory equipment; for treating materials by change of temperature, other than for making hot drinks or cooking or heating food