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The harm of frequent start and stop of air separation unit

The harm of frequent start and stop of air separation unit
The hazards of frequent start-up and shut-down of air separation unit include reducing the reliability and service life of the air separation unit, destroying the stability of the system, and affecting the safe operation of the air separation unit and causing accidents. Air separation unit should be regularly maintained to avoid frequent start-up and shutdown.
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Oct 14, 2020
On October 13, it was reported that Kaifeng DEAR air separation Industrial Co., Ltd. (hereinafter referred to as DEAR air separation) and Luoyang Zhon
Aug 21, 2020
On August 18, Kaifeng DEAR air separation project department organized Gansu Kaisheng Daming project kick-off meeting room on the first floor of the c
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Large air separation plant KDON-16000/35000 solution for metallurgical industry
Metallurgical industry is an industry to develop metal mineral resources and produce various kinds of raw materials for metal products. With the progress of science and technology, the metallurgical industry has new requirements for the process, process, management and application research and development of air separation plant. The air separation plant also has the following development trends: first, large-scale and cluster; second, the core technology is gradually localization; third, refinement, which needs to develop high-efficiency energy-saving technology for different application fields; fourth, highly automated and intelligent, reduce manual operation as far as possible, and gradually establish a remote monitoring system by using the rapid development of internet technology to collect in real time according to the operation data of air separation plant, using big data analysis to provide the best suggestions for users, etc. KDON (Ar) - 16000 / 35000, a large scale air separat
Small air separation plant KDON(Ar)-8000/16000-220 solution for metallurgical industry
DEAR air separation has provided a number of complete solutions for the metallurgical industry for many years, accumulated rich experience, and helped the efficient development of the metallurgical industry. With many years of service experience in the metallurgical industry, DEAR air separation provides customer with the small air separation plant KDON (Ar) - 8000 / 16000 / 220, which is mature technological, operating reliable, operating convenient, and energy saving intelligent, that is highly recognized by customers.
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During the start-up phase, when the liquid volume accumulates in the condensing evaporator, the gas and liquid mixture will pass through the liquid air and liquid nitrogen throttle valves. When the throttle valve begins to close, due to the large opening of the valve, when the amount of gas and liquid mixture from the lower column to the upper column changes little, and the pressure of the lower column does not increase significantly, it means that the temperature difference of the condensing evaporator has not increased. At this time, the condensing evaporator and the surrounding insulation have been cooled to the low temperature required by the liquid accumulation stage. Due to a large amount of cold production and a large amount of gas liquefaction, the liquid evaporation in the condensing evaporator is also increased. The rising steam produced prevents the flow of liquid from the sieve plate hole, and gradually accumulates liquid on the tray, so the liquid level will drop. In ad
Jun 11, 2024
With the continuous development of social economy and science and technology, the production scale of air separation equipment is getting larger. As an important part of the whole air separation equipment, automatic control system develops from the original instrument control system to PLC automatic control system, then develops to the DCS, CCS, SLS and AMS control systems which widely used nowadays. With the improvement of social awareness of energy and environmental protection, the advanced control system is used to realize the optimization of air separation equipment, and the control technology of automatic load changing to realize energy saving and consumption reduction is also emerged.
May 27, 2024
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