The utility model relates to a delayed coking manufacturing equipment field, specific void tower's oil gas cooling and moisture heavy sump oil freshening system are put to delayed coking that says so.Including putting void tower, coke drum and moisture heavy sump oil jar, the coke drum top is connected in the bottom of putting void tower, and the bottom of putting void tower is connected with pump of the first end, and the bottom of moisture heavy sump oil jar is connected with pump at the bottom of the second, and the delivery side of pump is connected in the top of putting void tower afterholding and crossing at the bottom of pump exit end of the first end and the second, the top of putting void tower is connected with air -cooled ware and the oil water separator who is used for the cooling to put void tower top steam, lighter hydrocarbons, and oil water separator's sour water pipeline links to each other and is equipped with the atomizer with the high -temperature oil -gas well pipeline. The utility model discloses putting the void tower operation and no longer using the water tank, the using water wisely reduces equipment maintenance cost. When heavy sump oil need dewater, need not reform transform the flow, reduce process flow step and workman's intensity of labour, improve production efficiency.