Industry oxygen status and pain points
The traditional oxygen production method mainly uses the cryogenic separation method, also known as the low temperature distillation method. It was invented by Professor Lin De in 1902, and the essence is the gas liquefaction technology. Usually, mechanical methods, such as throttling expansion or adiabatic expansion, are used to compress and cool the gas. After that, distillation is carried out by using the difference of boiling points of different gases to separate different gases.
The method is characterized by high purity of product gas, but the energy consumption of compression and cooling is very large, the scale is different, and the cost of oxygen production is 0.25-0.7 yuan / Nm3. At the same time, the need for oxygen in electric furnace production is intermittent, and the cryogenic oxygen production conditions are continuous. Therefore, in order to meet the production needs, there are usually cases of emission in the production process. The emission rate is generally about 10 %, and the high can reach more than 20 %.
With the upsurge of electric furnace re-production in the past two years, there are still many re-produced electric furnaces facing anaerobic availability, and the construction period of oxygen production equipment is long. Enterprises can only achieve production and oxygen supply by purchasing liquid oxygen gasification. Due to the continuous heat of the steel market, the price of liquid oxygen on the market now ranges from 1200-3000 yuan / ton, so that the oxygen cost of enterprises ranges from 1.7-4.3 yuan / Nm3, which is much higher than the industry average.
There are also some enterprises affected by environmental protection policies, local power supply restrictions and other factors, often face unplanned short-term parking in production, production can not continue the embarrassing situation. However, the start-up and shutdown of the cryogenic separation oxygen production device are relatively cumbersome. Under the condition of smooth operation, the cold start still needs about 2-3 days. Therefore, this oxygen production method is not applicable to enterprises facing policy shutdown.
Compared with the cryogenic separation oxygen production method, the pressure swing adsorption oxygen production technology has the characteristics of low oxygen production cost, simple start and stop, and convenient load adjustment, which is more in line with the needs of electric furnace production for oxygen.
The above is organized and released by the pressure swing adsorption oxygen production device-Suzhou Jiarui gas. Suzhou Jiarui Gas System Co., Ltd.is a science and technology company specializing in the research and development of gas separation and purification technology. The company has a science and technology development building, gas separation device assembly plant. Provide users with pressure swing adsorption hydrogen production, nitrogen production, oxygen production, purification or removal of carbon dioxide and other services, looking forward to win-win cooperation with you.
