Customized Made Polypropylene Perchloric Acid Fume Hood with Fume Scrubber System For Clinet Miss Jessica In Malaysia

Laboratory personnel generate acid and alkali waste gases during experiments (such as hydrochloric acid mist, sulfuric acid mist, nitric acid mist, hydrogen sulfide, etc.) or alkaline waste gases (such as ammonia, organic amines, etc.). Direct discharge of these gases would lead to air pollution problems.

SUCLAB Polypropylene Perchloric Acid Fume Hood with Fume Scrubber System is a fume hood designed with an inorganic waste gas treatment function. Its spray scrubbing system is designed at the top of the fume hood. The system includes the fume hood body, fan, damper, a purification device connected to the VAV (CAV) system and the fan, a spray system connected to the purification device, and a duct connected to the spray system for exhausting the treated air outdoors. This ensures that the exhausted waste gas meets environmental protection requirements. The spray device contains spray components and packing material located directly below the spray components. The inorganic waste gas to be treated undergoes thorough contact and reaction with the liquid from the spray components as it passes through the packing material. The spray liquid used in the spray components varies depending on the different inorganic hazardous substances handled in the fume hood, using either acidic or alkaline spray liquid, or water. By adding reactive substances to the fume hood's exhaust, the treatment process becomes more efficient and convenient, while also significantly reducing construction costs for piping and other components. This design of  Polypropylene Perchloric Acid Fume Hood with Fume Scrubber System effectively ensures the safety of laboratory personnel and meets waste gas emission standards, preventing air pollution.

Polypropylene Perchloric Acid Fume Hood with Fume Scrubber System Design : 

Advantages of Polypropylene Perchloric Acid Fume Hood with Fume Scrubber System :
 

Protects fume hoods and duct systems, extending their lifespan.
Ordinary fume hoods: The internal materials (such as powder-coated steel plates) and pipes (such as PVC, PP) may not be able to withstand strong acid or alkali corrosion for extended periods. Corrosive gases can quickly damage fans, cabinets, and pipes, leading to equipment failure, leaks, and even safety accidents.
Fume hoods with built-in water scrubbing devices: Their core components (such as liners, baffles, and water tanks) are made of polypropylene (PP), a corrosion-resistant material. The water scrubbing device, water pump, pipes, water tank, and spray nozzles are resistant to strong corrosion and strong acids and alkalis.
High-efficiency removal: The water scrubbing device is a small acid/alkali mist scrubbing tower. Its working principle is to dissolve the acidic and alkaline substances in the waste gas into water through a neutralization reaction.
For acidic waste gases, sodium hydroxide (NaOH) is added to the circulating water as a neutralizing agent.
For alkaline waste gases, sulfuric acid (H₂SO₄) or hydrochloric acid (HCl) is added to the circulating water as a neutralizing agent.
Source treatment: The waste gas at the fume hood outlet is treated by water scrubbing before being discharged, ensuring that it meets emission standards before being released into the atmosphere.
Enhances laboratory safety
Prevents pipe corrosion and leaks: If corrosive gases corrode holes in the pipes, toxic and harmful gases can leak into the ceiling cavity or laboratory, posing serious safety hazards. Pre-treatment with water scrubbing prevents pipe corrosion.
Reduces fire risk: Some chemical reactions may produce flammable acidic or alkaline gases. After water scrubbing purification, the risk to the entire exhaust system is reduced.
Reduces overall costs
Although the initial investment is higher than that of ordinary fume hoods, it is more cost-effective in the long run:
Lower maintenance costs: No need to frequently replace corroded pipes and fans.
Avoids fines: Ensures compliance with emission standards, avoiding hefty administrative fines and the risk of production shutdowns due to environmental non-compliance.

 The Working Principles of Polypropylene Perchloric Acid Fume Hood with Fume Scrubber System :

Waste Gas Capture: Corrosive waste gases from the fume hood are drawn in.
Entry into the Scrubber Tower: The waste gases are directed to a wet scrubbing device (small scrubber tower) integrated above or behind the fume hood.
Gas-Liquid Contact: A circulating pump pumps a neutralizing solution (such as dilute alkali solution) to the top of the tower, where it is sprayed downwards through nozzles, forming a water curtain. The waste gas flows from bottom to top, making full contact with the solution.
Neutralization Reaction: Acidic/alkaline substances in the waste gas react chemically with the solution and are neutralized into harmless salts dissolved in water (e.g., HCl + NaOH → NaCl + H₂O).
Gas-Liquid Separation: The purified gas passes through a demister layer to remove entrained water, and then the relatively clean gas is discharged into external pipes or the atmosphere by a fan.
Circulation and Discharge: The neutralizing solution is circulated and reused, with the pH value regularly monitored and reagents replenished. When the salt concentration in the water reaches a certain level, it needs to be treated as waste liquid by a professional servic

Working Principles Design  :

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