In recent years, with the rise of the resurgence of electric furnaces in the year, there are still many re-produced electric furnaces because of the lack of oxygen available, and the construction period of oxygen-making equipment is long, enterprises can only achieve oxygen supply through the purchase of liquid oxygen, due to The steel market continues to be hot. Now the price of liquid oxygen in the market ranges from 1200-3000 yuan/ton, so the oxygen cost of enterprises varies from 1.7 yuan to 4.3 yuan/Nm3, which is much higher than the industry average.
There are also some enterprises that are affected by environmental protection policies, local power supply restrictions and other factors. They often face unplanned short-term parking in production and the embarrassing situation that production cannot continue. The cryogenic separation and oxygen generation device is relatively cumbersome to open and stop. It takes about 2-3 days for a cold start in a smooth situation. In an enterprise facing policy shutdown, this method of oxygen production is not applicable.
Compared with the cryogenic oxygen production method, the pressure swing adsorption oxygen generation technology has the characteristics of low oxygen production cost, simple opening and stopping, and convenient load adjustment, and is more suitable for the oxygen demand of the electric furnace production. The pressure swing adsorption oxygen generation technology utilizes the strong interaction between the special molecular sieves for pressure swing adsorption and the quadrupole moment of nitrogen molecules, so that nitrogen is adsorbed on the zeolite adsorbent, and oxygen is less adsorbed, thereby separating oxygen and nitrogen. This technology was invented and developed by Praxair in the 1950s. In the domestic pressure swing adsorption leading enterprise: Jiangsu Jiayu Special Equipment Co., Ltd. continues to promote, China is already the world's largest market for pressure swing adsorption oxygen.
The pressure swing adsorption method, that is, the PSA method, adsorbs at a higher pressure to achieve gas separation, and achieves regeneration of the adsorbent at a lower pressure. The method is based on the molecular sieve to selectively adsorb oxygen and nitrogen components in the air to separate the air to obtain oxygen.
The market application prospects of pressure swing adsorption oxygen generators are very broad. The technology and equipment for pressure swing adsorption oxygen generation developed by Jiangsu Jiayu Special Equipment has the characteristics of low energy consumption and low maintenance cost. The automation of the whole set of equipment is high and can be realized. On duty. It is convenient to open and stop, and the device can realize oxygen production through adsorption. The device can produce qualified product oxygen 20 minutes after driving. The construction period is short, and the vacuum pump blowers are all conventional equipment, and the production cycle is short. From investment construction to production of qualified oxygen for about 6 months.