Variable Pressure Adsorption/MEA/MDEA/NHD Separation, Purification and CO2 Removal Technologies and Devices

 Our company has been committed to the development and application of Variable Pressure Adsorption Air Separation Oxygen Generation Technology (VPSA-O2) since 1994, and achieved industrialisation in May 1995, when the Variable Pressure Adsorption Air Separation Oxygen Generation Plant was built. The oxygen plant built by our company has superior performance, low production cost and no environmental pollution. Our company has independent patents and proprietary technology, and also produces proprietary LIX lithium-based oxygen adsorbent, large-diameter programme control valve manufacturers.

Device size

Single set of oxygen-enriched output: 100～15000NM3/h;

Oxygen-enriched concentration: 27%～95%;

Oxygen pressure: 10～40Kpa.G;

Device noise: 1 metre of the device boundary area ≤ 85dB(A);

Vacuum Variable Pressure Adsorption Air Separation Oxygen Generation (VPSA-O2) Application Scope1501572671374720.jpg (1) Ferrous smelting such as steelmaking and ironmaking, oxygen-enriched combustion in the field of metallurgical industry; (2) Oxygen-enriched in glass industry can be used for high-temperature melting to reduce the dust and nitrogen oxide emissions;

(3) Chemical industry in the field of fertiliser plant oxygen-enriched gas production, chemical synthesis of raw materials;

(4) Pulp bleaching, waste liquid oxidation treatment in paper-making industry, etc;

(5) High-temperature combustion in municipal waste incineration and reduction of secondary pollution;

(6) Various industrial kiln combustion can save energy and reduce emissions;

(7) Environmental protection in the field of sewage treatment, sludge oxygen aeration;

(8) Electronics, health care, food packaging, aquaculture and so on;

(9) Production of hydrogen peroxide, etc;

Technical advantages and technical characteristics

(1) VPSA-O2 oxygen generation device starts quickly (≤30min);

(2) New special LIX lithium-based oxygen adsorbent: higher N2/O2 separation coefficient, higher nitrogen adsorption capacity and higher strength under low-pressure conditions; LIX oxygen adsorbent has advanced performance, low usage and long service life; the adsorbent is self-developed and produced by Chengdu Huaxi Chemical Technology Co;

(3) Large calibre hydraulically driven triple eccentric full-metal torque programmable butterfly valve: 2 million times switching without leakage, switching time ≤ 2 seconds, larger calibre up to DN1600; the programmable butterfly valve is self-developed and produced by Chengdu Huaxi Chemical Technology Co;

(4) PLC self-control system: automatic fault tower removal and fault tower automatic optimisation recovery technology, adaptive pressure adjustment technology; high degree of automation; unattended operation can be achieved;

(5) High oxygen yield, small load of blower and vacuum pump; the adoption of Roots vacuum pump saves 20-30% energy compared with water ring vacuum pump;

(6) Low power consumption per unit of oxygen production and low consumption of cooling water;

At present, our company's large-scale vacuum variable pressure adsorption oxygen-enriched device single series of oxygen production has reached 20,000Nm3/h (equivalent to pure oxygen) design and production capacity, the product oxygen purity according to the different conditions of use can be determined arbitrarily between 50% to 95% O2, our company has been put into operation VPSA-O2 oxygen device oxygen synthesis power consumption in 0.26-0.38Kwh/ Nm3O2 or so, the device has no energy-saving, cooling water consumption is low. Nm3O2, the trouble-free production cycle of the device is more than two years, the main process operation data and equipment safety chain are concentrated in the main control room by the computer unified automatic management and adjustment, and even unmanned operation and remote control can be achieved, which effectively reduces the cost of production management and the labour intensity of the operators.

In addition, the unit oxygen consumption of our oxygen plant is 10-50% lower than that of the traditional deep-cooling oxygen plant, the comprehensive investment is 10-20% lower, the maintenance cost is more than 30% lower, the management cost is more than 50% lower, and there is no problem of explosion due to the accumulation of organic matter in the deep-cooling plant, which can create obvious economic benefits for the users.