Seven level purification process:
1. Primary tank: Separation of hydrogen and alkali by gravity.
2. Two pole tank: cooling, hydrogen water separation, water vapor condensation. Moisture content below 4g/Nm3.
3. Buffer tank: Remove free water.
4. Level 3: The tower takes turns working.
5. Deoxygenation: Heating and dehydrogenation of palladium compounds after adsorption.
6. Filter and remove dust.
7. The screening of qualified hydrogen and unqualified hydrogen results in a hydrogen purity of up to 99.999%
Detailed explanation of the seventh level purification process:
1. Primary tank: gravity hydrogen alkali separation
Technical principle: By utilizing the density difference between hydrogen and electrolyte, preliminary gas-liquid separation is achieved through gravity settling, intercepting over 99% of alkaline droplets.
Structural advantages: honeycomb shaped guide plate design, increasing contact area; Titanium alloy liner+PTFE coating, resistant to strong alkali corrosion.
Output indicators: Alkali mist content<50ppm, recovered electrolyte>98%.
2. Secondary tank: Cooling hydrogen water separation
Technical principle: By using a circulating water cooling device to lower the temperature of hydrogen gas to 5-10 ℃, water vapor is condensed into liquid water, achieving secondary separation of gas and liquid.
Core component: Spiral tube condenser, with a 30% increase in heat transfer efficiency; Automatic drain valve prevents the accumulation of liquid water.
Output indicators: Moisture content ≤ 4g/Nm3, dew point temperature ≤ 10 ℃.
3. Buffer tank: dynamic removal of free water
Technical principle: After hydrogen enters the buffer tank, the flow rate drops sharply, and residual free water is intercepted by inertial collision and baffle, while balancing the pressure fluctuations in the system.
Intelligent control: Built in humidity sensor linked to drainage solenoid valve, real-time discharge of liquid water.
Output indicator: Free water content<0.1g/Nm3.
4. Three stage drying tower: dual tower adsorption drying
Technical principle: Two sets of molecular sieve drying towers work alternately to adsorb trace water molecules in hydrogen gas, and use waste heat to regenerate molecular sieves to achieve continuous drying.
Composite molecular sieve: 3A+13X graded adsorbent, balancing water molecule capture ability and resistance to alkaline gas pollution.
Output indicators: Dew point temperature ≤ -70 ℃, moisture content<1ppm.
5. Fourth stage deoxygenation: palladium based catalytic purification
Technical principle: Hydrogen gas passes through a catalytic bed loaded with palladium compounds, and residual oxygen reacts with hydrogen gas under palladium catalysis to generate water, completely removing oxygen impurities.
Gradient temperature control: segmented heating at 200-300 ℃, optimized reaction kinetics, deoxygenation efficiency>99.9%.
Self cleaning design: Regular reverse blowing to prevent catalyst carbon deposition and deactivation.
Output indicator: Oxygen content<0.5ppm.
6. Five stage filtration: precision dust removal
Technical principle: Multi layer sintered metal filter (precision 0.01 μ m) is used to intercept nanoscale particles and catalyst powder in hydrogen gas.
Performance guarantee: Differential pressure monitoring+sonic blowback system, filter cartridge life extended to 8000 hours.
Output indicator: Particle content<0.1mg/Nm3.
7. Level 6 screening: purity grading control
Technical principle: The online hydrogen analyzer monitors the purity in real time, and the unqualified hydrogen gas automatically switches to the reflux channel for secondary purification, ensuring a constant purity of the output hydrogen gas.
Intelligent logic: Dual channel redundant design, seamless switching when purity fluctuates, no downtime risk. Data cloud storage, supporting purity history tracing and process optimization.
The final output hydrogen purity is ≥ 99.999%
Core advantages:
1. Ultimate purity, precise and controllable
Seven level process for step-by-step purification, impurity removal rate>99.9999%, purity fluctuation range ± 0.0001%, meeting the ultra-high standard requirements of semiconductor manufacturing, proton exchange membrane fuel cells, and other industries.
2. Double optimization of energy efficiency, reducing costs and increasing efficiency
Waste heat recovery technology reduces regeneration energy consumption by 40% and increases the lifespan of molecular sieves by 50%;
The full process pressure loss is less than 0.15MPa, and the system's comprehensive energy efficiency is 10% -15% ahead of the industry.
3. Intelligent operation and maintenance, secure and worry free
The IoT platform monitors over 20 parameters such as purity, temperature, and pressure in real-time, and automatically alerts and initiates protection programs for abnormal states;
Modular design supports quick replacement of consumables such as filter cartridges and catalysts, reducing maintenance costs by 30%.
4. Super adaptability
Compatible with a wide pressure range of 1-3.2MPa input, suitable for variable load operation of electrolytic cells (30% -110%);
Stable operation can be achieved within an ambient temperature range of -30 ℃ to 70 ℃, without fear of extreme cold or heat.