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10000m ^ 3 / h air separation stopping the practice of cold restart

Cold, cold air separation drive 21h emperor of the normal level reached 82%, the product of oxygen, nitrogen qualified. When to stop cold when the transfer time to consider the air separation production of pure and rare gases, the start time will be shortened a few hours. Such as: August 17, 1996 A Taiwan air separation in the hot state, driving a large heated 10h,[link widoczny dla zalogowanych], cold drive 36h, 46h total time of the oxygen was normal. The July 10, 1997,[link widoczny dla zalogowanych], A cold 177h air separation units,[link widoczny dla zalogowanych], and then start to get oxygen time is only 8.5h. Examples can be seen from the above re-start the cold state carries oxygen to the thermal state of the time only 1 / 5. 3.3 stops flexibility to open and then stop cold start, free from the influence of time and space, at any time can Company to adjust with changes in oxygen,[link widoczny dla zalogowanych], at least cold for hours, and more than 20 days are cold, not only carries oxygen to a short time, flexibility, and this is also driving the cold state is simple, convenient, safe, reliability. 4 Calculation of Economic Benefit April 14, 1997 A table of the cold air separation into ※ ※ successful practice, and in the other three, To May 2002, four 386 yuan / (kwh), total cost of cold car: 5400kWhX0.386 yuan / (kwh) X6.5hX417 time = 5.65 million air separation under large thermal heating time 10h, the cold car to a normal oxygen delivery time 36h, 417 cold drive, need to cost a total of: 5400kWhX0.386 yuan / (kwh) X46hX417 time = 39.98 million yuan in power cost savings: (3998-565) ÷ 5 = 686 million yuan from the above calculations can be seen, the four Taiwan, Take large-scale air separation stop cold restart of the measures, the reduced air separation start-up time, ensure that the company oxygen requirements, but also greatly reduce the oxygen elution rate (since April 1994,[link widoczny dla zalogowanych], , the company in recent years, the average rate of oxygen elution from 5% to 6%), reducing energy consumption per ton to achieve the purpose of energy saving. ※ Linde Company was Yueyang gasification 48000m3 / h Air Separation Unit Contract by the Linde Engineering Division (Germany) and Linde Process Plant Co., Ltd. (China) to the Yueyang Sinopec Shell Coal Gasification Co., Ltd. to provide a set of 48000m3 / h (02) air separation plant in the contract, in 2003, in Beijing on 19 March l2 Sinopec International Company Limited signed into effect. Sinopec Lanzhou Design Institute will be in the Petrochemical International Company Limited (EPC) are responsible for plant engineering design of the device; Linde Engineering (LE) Limited at Linde Process Plant (LPP) devices under the general assistance process design and is responsible for importing some of the equipment design and supply; LPP is responsible for the domestic part of the equipment design and supply. The air separation plant to ensure that the value of the product parameters such as the table below. The ASU is characterized by: ① important equipment will be in accordance with the Shell (shel1) DEP standards for the design; ② compression process liquid oxygen pump, and using nitrogen compressors and nitrogen expander cycle technology, with high-pressure vaporization of liquid oxygen and nitrogen have high-pressure oxygen product, while meeting users in the high pressure of nitrogen and nitrogen needs, saving the company for Linde Gas of Yueyang, gas oxygen 482o04.50 ≥ 99.6% 02 ● High Pressure Nitrogen 2950o8.0o <1000X10 a '02 in the pressure of nitrogen 275303.2o <10X10 one '02 low nitrogen Il354O0.7 <100X10 one '02 low-pressure nitrogen Ⅱ l858O0.46 <100X10 liquid nitrogen for a '02 l80o0.4 <10X10 '02 instruments and devices of a 29700.7 a high-pressure air compressor nitrogen; ③ a steam turbine to drive a compressor and a circulating nitrogen compressor; ④ Air machine, recycling nitrogen compressor, low pressure nitrogen compressor centrifugal compressor full use of uniaxial; ⑤ Vertical single radial flow adsorber and import Linde molecular sieve. Linde Process Plant Co., Ltd. Yang Xueshen cryogenic technology in 2004 3 CryogenicTechnology № 32004''31

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