Roots blower (Roots blower) is widely used in multiple industrial fields due to its simple structure, stable air volume, easy maintenance, and strong adaptability. The following are its main application industries and specific uses:
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**1. Environmental Protection and Sewage Treatment**
-* * Sewage treatment plant**
-Aeration oxygen supply: Provides air for activated sludge processes (such as A2O and SBR processes) to promote microbial degradation of organic matter.
-Backwash: Used for cleaning filter or MBR membrane components.
-* * Biogas transportation * *: pressurized transportation of biogas produced by anaerobic fermentation to power generation units or gas storage tanks.
-* * desulfurization and denitrification * *: Provide oxidation air or ammonia dilution air for flue gas treatment systems (such as SCR/SNCR).
**Typical parameters: air flow rate of 5~100 Nm3/min, pressure of 39.2~78.4 kPa (0.4~0.8 bar).
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**2. Mining and Metallurgy**
-Carbon slurry plant (CIP/CIL process)**
-Provide air for the leaching tanks of gold and silver to enhance the cyanide reaction.
-Floatation machine inflation: Generating bubbles in mineral processing to separate useful minerals.
-Blast furnace coal injection: conveying coal powder or combustion air.
**Special requirements * *: Corrosion protection (such as stainless steel rotor) and wear resistance (installation of intake filter) are required.
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**3. Chemical and Petroleum**
-Gas transportation**
-Transporting chlorine gas, hydrogen gas, sulfur dioxide, etc. (requiring explosion-proof design and special sealing).
-Gas recovery in the petrochemical industry.
-Vacuum system: Used for processes such as vacuum distillation and crystallization (requires the use of a vacuum pump).
**Attention * *: For corrosive media, PTFE coating or titanium material rotor should be selected.
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**4. Food and Medicine**
-Fermentation oxygen supply**
-Beer, yeast, and fermentation tanks in production are ventilated.
-Pneumatic conveying**
-Convey flour, milk powder, medicinal powder, etc. (requiring oil-free design and complying with FDA standards).
**Hygiene requirements: Contact parts must be made of 304/316 stainless steel and surface polished (Ra ≤ 0.8 μ m).
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**5. Electricity and Energy**
-Biomass power generation: Transporting combustible gases generated by the gasification of straw.
-Garbage incineration: providing combustion air for the incinerator.
-* * Desulfurization system * *: delivers oxidizing air to the absorption tower.
**High temperature scenario * *: requires installation of air-cooled jacket or water-cooled shell.
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**6. Building materials and papermaking**
-Cement production: Conveying raw material powder or coal powder (requires explosion-proof motor).
-Pulp bleaching: providing ozone or oxygen to the bleaching tower.
-Glass manufacturing: Adjust the combustion air in conjunction with the burner.
**Dust environment * *: Install a cyclone dust collector (filtration accuracy ≤ 10 μ m) at the inlet.
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**7. Aquaculture**
-Oxygen aerator: aerate the bottom of fish ponds and shrimp ponds to increase dissolved oxygen.
**Features: Low pressure (19.6~39.2 kPa), low noise (equipped with underwater exposure pipe).
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**8. Other industrial applications**
-* * Pneumatic conveying * *:
-Pipeline transportation of particles and powders (such as plastic particles, feed, fly ash).
-Vacuum packaging: Vacuum pumping of food and electronic components.
-* * Electronics industry * *: Dry gas transportation in PCB board production.
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**Key selection factors**
1. * * Medium type * *: Air, corrosive gases, flammable gases, etc.
2. Pressure requirement: Roots blower is suitable for low pressure (<98 kPa), and for high pressure, screw or centrifugal blower should be selected.
3. * * Cleanliness * *: Food/medicine needs to be oil-free, and chemical industry needs to be corrosion-resistant.
4. * * Environmental conditions * *: Explosion proof, dust-proof, high temperature/high humidity adaptability.
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**Common alternative solutions**
-* * Centrifugal fan * *: Suitable for high flow, low pressure (such as ventilation).
-Screw fan: Higher pressure (>0.1 MPa), lower noise, but higher cost.
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**Industry Application Summary Table**
|* * Industry * * | * * Main Purpose * * | * * Special Requirements * *|
|----------------|-----------------------------|---------------------------|
|Wastewater treatment | Aeration, biogas transportation | Moisture resistance, anti-corrosion|
|Mining | Immersion tank aeration, flotation | Wear resistant, corrosion-resistant|
|Chemical Industry | Gas Transportation, Vacuum Systems | Explosion proof, Chemical Corrosion Resistant|
|Food/Medicine | Fermentation, Powder Transportation | Oil Free, Food Grade Materials|
|Electricity | Biomass gas transportation, desulfurization | High temperature adaptability|
|Aquaculture | Oxygenation | Low noise, low pressure|
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The core advantages of Roots blowers are stable flow and simple maintenance, but careful selection is necessary in high-pressure (>0.1 MPa) or high-precision scenarios. In practical applications, it is recommended to design in conjunction with process parameters and manufacturers.
