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Tianyin Chemical 10,000t/a Polyglycol Ether Production Plant was built in old factory, with the building area of 3,900 square meters. The plant is the first continuous production unit which directly expanded from small-size trial unit to 10,000t level glycol ether. The same plant can be employed for the production of both ethylene glycol ethyl ether and ethylene glycol mono-n-butyl ether, and its production technology is the pioneer one in China and even takes the leading place internationally. We undertook the initial design and detailed design, including the workshop and its relevant supporting facilities, which involve Process System, Piping, Non-standard Equipment, Auto Instrument, Electric, General Drawing, Civil, Power, Water Supply & Drainage, HVAC, Budgetary Estimate and Technology economy etc. The project is the first 10000t/level continuous production plant of glycol ether. It was successfully put into operation in August 2000 and each index has reached the design requirements. The project passed the inspection acceptance and verification organized by Science and Technology Department of Jiangsu Province and appointed as a National Key High-tech Enterprise by National Science and Technology Ministry as well as listed in Torch Plan of National Science and Technology Ministry. It is awarded the Second Prize of 10th Excellent Engineering Design of Jiangsu Province.