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The Silane Combustion Tower is a purification system designed to treat soluble exhaust gases such as silane and ammonia produced in solar cell production lines and Chemical Vapor Deposition (CVD) processes. Its working principle utilizes the spontaneous combustion characteristics of silane when exposed to air. The exhaust gas is first directed into a combustion chamber for burning, then the combusted gas enters a purification tower, where it undergoes secondary treatment through spray absorption with neutralizing liquid. Finally, the purified gas is discharged through an exhaust fan after meeting emission standards.
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Exhaust Gas Purification: Efficiently removes toxic and harmful gases such as silane and ammonia to ensure emissions meet environmental regulations.
Secondary Purification: After combustion, the exhaust gas enters the purification tower for spray scrubbing and packing absorption to further eliminate residual pollutants.
Safe Treatment: Transforms hazardous gases into harmless substances through combustion and absorption, ensuring operational safety.
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Combustion: Silane exhaust gas enters the combustion chamber via pipelines, where it spontaneously ignites upon contact with air.
Absorption: The combusted gas flows into the purification tower and fully contacts the sprayed neutralizing solution (such as circulating neutralizing liquid) for counter-current absorption.
Spraying: The purification tower includes a spray chamber that uses pumps to spray the neutralizing liquid, ensuring efficient gas–liquid contact.
Dehydration: The treated gas passes through a demister before being discharged by an exhaust fan.
Corrosion Resistance: Typically constructed from stainless steel for excellent corrosion resistance.
High Strength: Robust structure ensures long-term stable operation.
High Efficiency: Delivers high purification performance meeting strict environmental standards.
Safety: Equipped with dual fans (one in use, one standby) and an emergency water supply system for improved reliability and safety.
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Solar cell production lines
Chemical Vapor Deposition (CVD) process lines
tainless steel silane combustion tower | Type number | CRS-1 | CRS-2 | CRS-3 | CRS-4 | CRS-5 | CRS-6 | CRS-7 | CRS-8 | CRS-9 | CRS-10 | CRS-Ⅱ-2 | CRS-Ⅱ-4 | CRS-Ⅲ-4 | CRS-Ⅳ-4 |
Treated air volume | ~200 | ~400 | ~600 | ~800 | ~1000 | ~1200 | ~1400 | ~1600 | ~1800 | ~2000 | ~3500 | ~7000 | ~10000 | ~15000 | |
Equipment resistance | 400 | ||||||||||||||
Silane removal rate | ≥99.99 | ||||||||||||||
Ammonia removal rate | ≥99.99 | ||||||||||||||
Compressed air volume | 400 | 600 | 1000 | 1500 | 2000 | ||||||||||
Nitrogen content | 200 | 300 | 500 | 800 | 1000 | ||||||||||
Select the air distributor | Type number | 3A | 3A | 3A | 3A | 3.5A/5.5A | 3.5A/5.5A | 3.5A/5.5A | 3.5A/5.5A | 3.5A/5.5A | 3.5A/5.5A | 4A | 4A | 6A | 6C |
Motor power | 1.5 | 1.5 | 1.5 | 1.5 | 3/2.2 | 3/2.2 | 3/2.2 | 3/2.2 | 3/2.2 | 3/2.2 | 5.5 | 5.5 | 4 | 7.5 | |
Motor speed | 2900 | 2900 / 1450 | 2900 | 2900 | 2900 | 1800 | |||||||||
Circulator pump | Type number | KP40-1 | KP40-2 | KD40-3 | KD50-3 | KD50-3 | KD50-3 | KD50-3 | KD50-3 | KD50-3 | KD50-3 | KD50-3 | KD50-3 | KD50-5 | KD65-5 |
Motor power | 0.75 | 1 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2/0.75 | 2.2/0.75 | 3.75/0.75 | 3.75/0.75 | |
Motor speed | 2900 | ||||||||||||||
Power source | Electric voltage | AC380 | |||||||||||||
frequency | 50 | ||||||||||||||
Appearance and mounting dimensions | Tower diameter | 1200 | 1200 | 1200 | 1200 | 1400 | 1400 | 1400 | 1400 | 1400 | 1400 | 1400×1900 | 1400×2400 | 1400×2400 | 1400×2800 |
Exhaust diameter | 350 | 350 | 350 | 350 | 350 | 350 | 350 | 350 | 350 | 350 | 350 | 350×2 | 350×2 | 400×2 | |
Inlet diameter | 65×1 | 65×2 | 65×3 | 65×4 | 65×5 | 65×6 | 65×7 | 65×8 | 65×9 | 65×10 | 150×2 | 150×4 | 200×4 | 250×4 | |
Outlet pipe | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 500 | 500 | 600 | |
Fresh air intake | 100×100 | 200×200 | |||||||||||||
derrick | 2100×2100 | 2400×2400 | |||||||||||||
Tower height | 2800 | ||||||||||||||
h1 | 500 | ||||||||||||||
h1 | 750 | ||||||||||||||
h3 | ≥400 | ||||||||||||||
L1 | 2800 | 2800 | 2800 | 2800 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3500 | 3500 | 3500 | 3500 | |
L2 | 6000 | 6000 | 6000 | 6000 | 7000 | 7000 | 7000 | 7000 | 7000 | 7000 | 7000 | 7000 | 7000 | 7000 | |
L3 | 2800 | 2800 | 2800 | 2800 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3500 | 3500 | 3500 | 3500 | |
L4 | 7000 | 7000 | 7000 | 7000 | 8000 | 8000 | 8000 | 8000 | 8000 | 8000 | 9000 | 9000 | 9000 | 9000 | |
● Stainless steel silane combustion purification tower must ensure negative pressure of about 200Pa.
● An emergency combustion cylinder must be installed behind the vacuum pump of PECVD equipment (see the equipment flow chart).
● Stainless steel silane combustion purification tower must adopt a new process, double fan air extraction, one use one standby.
● The electric regulating valve of the fan inlet must be linked with the fan.
● A disc valve must be installed before the air inlet of the fan to control the negative pressure in the silane combustion purification device.
● Silane combustion purification device fresh air supply outlet must be equipped with a regulating valve.
● 1 ~ 1.5 meters outside the inlet pipe interface must be connected by a dismountable port to prevent the removal of debris from the combustion box.