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| large-scale air separation plant on-site Handan Iron & Steel company of technology exchanges meeting held in Handan |
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On October 20th to 24th of 2008, China National Air Separation Plant Co. Ltd. fronted for the large-scale air separation plant on-site Handan Iron & Steel company of technology exchanges meeting in Handan and Hebei Iron & Steel Group Handan Iron & Steel Company assisted the meeting, 66 experts and users from the metallurgical industry, chemical industry and design institutes participated in the meeting.
The session deep in discussion mainly on the technical characteristics, designing way, cold-box tower and pipeline configuration, DCS system and electrical design, vertical radial-flow molecular sieve adsorption structure and etc. of Handan Iron & Steel company new 20,000 air separation plant, and also visited the Handan Iron & Steel company new 20,000 air separation unit at the scene. This equipment has run in a stable condition and product quality, especially in energy saving results since June 2007. President Zhang Wei of Handan Iron & Steel Company Power Factory evaluated that the new 20000Nm3 / h air separation plant is currently running the lowest energy consumption of 20,000 level air separation plant, power consumption of oxygen is 0.568kWh/m3 per unit, the largest amount of load regulation, and its technical performance targets have been met or exceeded with the same level foreign countries? of air separation equipment, it has reached an internationally advanced level and domestic first-class level, safe, efficient, energy-saving and reliable, very satisfied the Handan Iron & Steel Company. The delegates also gave a positive assessment, and they had a strong interest on the comparative advantage such as its smooth running more than a year in energy-saving and etc.
The most eye-catching parts of the Handan Iron & Steel Company 20,000 air separation plant are the air separation plant system optimization and innovation ideas. Compared with the horizontal absorber, this device is used with vertical radial-flow molecular sieve adsorption which CNASPC owns the independent intellectual property rights, as a result of reborn heating, heated air flows from the center of the tube inside to outside, makes full use of the heat, reduces the consumption of the heater, the heater reduces 5% to 10% energy consumption, saves much area room. Lower column is used structured packing, running resistance less than the sieve plate lower column, reduce 12kPa. At the same time, regular packing tower greatly increased the range of load regulation, in theory load regulation could be in the scope of 70% to 115%. The cold box piping was also innovative design of compensation to ensure that the pipeline safe operation in the cold environment, compensation will enough to prevent pulling off the pipeline happening. The whole cold box design-based division of the main cold box and plate cold box to facilitate the overhaul; separate design of the plate cold box has also increased its space at the top, making all the main heat exchanger trachea be possible on the plate cold box, this layout design, both for the convenience of the operators to examine and repair the plate heat exchanger air distribution butterfly valve, also avoid the gas-pipeline clutter. Platform ladder and valves are designed on one side, the valves are relative concentration, so as to facilitate the implementation of emergency treatment on the scene; by the way, platform ladder design greatly shortens the time when operators from top to bottom overhaul of the cold box. As Air Separation Plant chairman and general manager Xu Wei-Min in his speech referred to "use the most advanced technology at home and abroad, tailor-made for the user the best equipment, in particular, to meet the special requirements of the user's needs."
The experts and users believe that the Handan Iron & Steel Company new 20,000 air separation plant applied vertical radial-flow absorber purification systems, regular packing lower column, cold box tube optimization and etc. new technologies, energy saving results apparently, such as the purification can save the power more than 360,000 degree a year, the air compressor energy-saving is more than 2,760,000 degree a year, the overall operation of equipment power consumption energy-saving 4% than the general domestic production of air separation plant. Although these technologies take on the 20,000 level air separation plant designed and made by Air Separation Plant, however, we can completely apply and promote to greater specification air separation plant, this has a great significance for the entire air separation plant optimization.
As a professional company in the domestic air separation project field, we have a sense of mission for promoting Chinese air separation be healthy and development rapidly. The success of Handan Iron & Steel Company new 20,000 air separation plant put into operation means that CNASPS plays a comparative advantage in the industry, as well as the success of tailoring air separation plant for users, that?s a milestone in the development of the company. CNASPC will maintain the "profession creating value" concept, to continue to do a good job in technological innovation, meticulous design, energy saving and keep on taking the road of specialized engineering company, to provide users with an excellent quality of the air separation project.
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