I. Overview of Enterprise and Product
Jiangsu Minnuo Group Co., Ltd. is a professional manufacturer of gas separation equipment, specializing in oxygen and nitrogen generation for many years. Its independently developed and produced Pressure Swing Adsorption (PSA) nitrogen generator has become a core supporting equipment for safe and efficient production in the petrochemical industry, relying on advanced carbon molecular sieve adsorption technology, intelligent control system and stable operation performance. Taking air as raw material, the equipment realizes efficient nitrogen-oxygen separation through the cyclic process of alternating pressure adsorption and depressurization regeneration of two towers. It can flexibly produce nitrogen with purity of 95%-99.999%, dew point ≤-40℃, and adjustable pressure ≤0.8Mpa, which can accurately match the gas demand of different process links in the petrochemical industry.
II. Core Application Scenarios
1. Nitrogen Flooding and Enhanced Oil Recovery
In the middle and late stages of oilfield development, the decline of reservoir pressure leads to the reduction of crude oil recovery rate. The high-purity nitrogen produced by Minnuo PSA nitrogen generator can be injected into the reservoir as a flooding medium to supplement formation energy. Taking advantage of the characteristics of nitrogen being immiscible with crude oil and strong expansibility, a stable gas-oil displacement power is formed to promote the flow of residual crude oil to production wells. Especially in low-permeability reservoirs, this technology can significantly improve crude oil fluidity. Practical application verification shows that it can increase crude oil recovery rate by 10%-20% and effectively extend the service life of reservoir exploitation.
2. Gas Lift Oil Production and Stable Well Operation
To solve the production problems of deep wells and low-yield wells, the high-pressure nitrogen provided by Minnuo PSA nitrogen generator can be injected into the annular space between the tubing and casing, reducing the density of the liquid in the wellbore and increasing the pressure difference between the liquid column and the formation, helping crude oil to be smoothly lifted to the surface. By precisely adjusting the nitrogen injection volume and pressure through the intelligent control system to adapt to the geological parameters and fluid properties of different oil wells, the oil well output can be increased by 30%-50%, ensuring the long-term stable operation of the oil well.
3. Safety Guarantee for Workover Operations (Killing Well, Well Flushing)
During oil well workover, the inert nitrogen produced by Minnuo PSA nitrogen generator can be used as a well killing medium to replace traditional well killing fluid, avoiding reservoir pollution. By accurately controlling the injection pressure to balance the downhole pressure and reservoir pressure, blowout accidents are effectively prevented, and the productivity recovery rate of the oil well after workover is improved. At the same time, when high-pressure nitrogen is used in combination with well flushing fluid, it can enhance the carrying capacity of the well flushing fluid, increase the removal rate of impurities and sediments in the well by 20%-30%, quickly restore oil well productivity, and cause minimal damage to the reservoir.
4. Inerting Protection for Storage Tanks and Production Areas
There are a large number of flammable and explosive oil-gas mixtures in crude oil storage tanks, gathering stations and other areas of the petrochemical industry. The continuous nitrogen output by Minnuo PSA nitrogen generator can fill the enclosed space, reducing the oxygen concentration to a safe range of 8%-10%, making the environment inert and fundamentally inhibiting the risk of fire and explosion. When applied in the oil tank area, the nitrogen sealing technology isolates the air, prevents the oxidation and deterioration of crude oil, and ensures the safety of the storage link and the quality of oil products.
5. Purging and Displacement of Equipment and Pipes
Before the construction, maintenance or commissioning of petrochemical plants, it is necessary to purge and displace pipes, reactors and other equipment. The stable nitrogen source provided by Minnuo PSA nitrogen generator can efficiently displace flammable gases and oxygen in the equipment, reducing the oxygen content below the explosion limit, and avoiding safety accidents caused by gas residues during equipment maintenance or startup. Its compact skid-mounted design is convenient for on-site deployment, which can quickly respond to temporary purging needs and improve work efficiency.
6. Inert Protection for Chemical Reaction Processes
In chemical reaction links such as catalytic cracking, hydrofining and synthetic ammonia, the high-purity nitrogen produced by Minnuo PSA nitrogen generator can create an oxygen-free reaction environment, isolating air to prevent oxidation of reactants or products and avoiding out-of-control chemical reactions. At the same time, as a carrier gas or protective gas, nitrogen can ensure that the reaction proceeds as expected, improve product yield and quality stability, and adapt to the continuous and high-precision gas demand of chemical production.
7. Emergency Fire Extinguishing
When a fire breaks out in an oilfield or chemical plant, Minnuo PSA nitrogen generator can quickly provide a large amount of inert nitrogen, inhibiting the combustion reaction by diluting the oxygen concentration in the combustion area, and achieving environmentally friendly and efficient fire extinguishing. Compared with traditional fire extinguishing methods, nitrogen fire extinguishing has no residue, causes little damage to equipment and the environment, can significantly reduce fire losses, shorten the equipment repair time after the fire, and ensure production continuity.
III. Core Product Advantages
1. High Efficiency and Energy Saving: Taking air as raw material, it only consumes electric energy of the air compressor, and the operation cost is much lower than that of purchased liquid nitrogen or cylinder nitrogen; the optimized adsorption process design reduces energy consumption by more than 10% compared with traditional equipment.
2. Intelligence and Convenience: Adopting imported PLC control system to realize fully automatic operation, the nitrogen purity, flow rate and pressure are displayed in real time and can be accurately adjusted, supporting unattended operation. Daily maintenance only requires regular parameter inspection and simple maintenance.
3. Flexible Adaptability: The equipment has a compact structure and integral skid mounting, covering a small area, no need for complex infrastructure, and can produce gas by connecting to the power supply on site; the gas production range is 5-1000Nm³/h, which can be customized according to the project scale, adapting to the on-site nitrogen production needs of small and medium-sized projects.
4. Stability and Reliability: The alternate operation of the two towers ensures continuous gas supply. There are no moving parts inside the equipment, resulting in little mechanical wear and low failure rate; the service life of the carbon molecular sieve is as long as 5-10 years, with strong long-term operation stability.
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