Roots blower (Roots blower) is widely used in multiple industrial fields due to its simple structure, stable air volume, and strong pressure adaptability. The following are its main application scenarios and specific uses:
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**1. Environmental Protection and Sewage Treatment**
-* * Sewage treatment plant * *:
-Aeration oxygen supply: provides air for activated sludge process to promote microbial degradation of organic matter (such as A/O process, SBR process).
-Backwash: Used for cleaning filters or membrane components.
-* * Biogas transportation * *: Pressurize and transport the biogas produced by anaerobic fermentation to the generator set or gas storage tank.
**Typical parameters: air volume of 5-50 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/IL process) * *:
-Provide air for the leaching tank to promote cyanide leaching of precious metals such as gold and silver.
-Floatation machine inflation: provides a bubble carrier for the flotation tank in mineral processing.
-Blast furnace coal injection: conveying coal powder or combustion air.
**Special requirements: Corrosion resistance (such as stainless steel shell) and particle resistance (with added filters) 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 Negative Pressure * *: Used for vacuum crystallization, distillation and other processes (requires the use of a vacuum pump).
**Attention: For corrosive gases, PTFE coated rotors or titanium materials should be used.
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**4. Food and Medicine**
-Fermentation oxygen supply:
-Beer, yeast, and fermentation tanks in production are ventilated.
-* * Pneumatic conveying * *:
-Transporting grains, milk powder, medicinal powder, etc. (requiring oil-free design to avoid contamination).
**Hygiene requirements: Parts in contact with food must be made of 304/316 stainless steel and comply with FDA standards.
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**5. Electricity and Energy**
-* * desulfurization and denitrification * *:
-Transport ammonia or air to the SCR/SNCR system.
-Biomass power generation:
-Transporting smoke or biogas from burning straw.
**High temperature scenario * *: requires installation of heat dissipation devices (such as air-cooled jackets).
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**6. Building materials and papermaking**
-Cement production:
-Transporting raw material powder or coal powder (requires explosion-proof motor).
-* * Pulp bleaching * *:
-Provide ozone or oxygen for the bleaching tower.
**Dust environment * *: A cyclone dust collector needs to be installed at the entrance.
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**7. Aquaculture**
-* * Oxygenation machine * *:
-Aeration at the bottom of fish ponds and shrimp ponds to increase dissolved oxygen.
**Features: Low pressure (19.6~39.2 kPa), low noise (underwater exposure tube silencing).
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**8. Other industrial applications**
-* * Pneumatic conveying * *:
-Pipeline transportation of particles and powders (such as plastic particles and flour).
-Vacuum packaging:
-Vacuum extraction of food and electronic components (requires coordination with a vacuum system).
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**Key selection factors**
1. * * Medium * *: Air, corrosive gases, flammable gases, etc.
2. * * Pressure requirement * *: Low pressure (<98 kPa) Roots, high pressure requires screw or centrifugal fan selection.
3. * * Cleanliness * *: Oil free or lubricated with oil (food/medicine require no oil).
4. * * Environment * *: Explosion proof, anti-corrosion, high temperature adaptability.
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**Common alternative solutions**
-* * Centrifugal fan * *: Suitable for high flow, low pressure scenarios (such as ventilation).
-Screw fan: Higher pressure (>0.1 MPa), lower noise, but higher cost.
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The core advantages of Roots blowers are stable flow and simple maintenance, but careful selection is necessary in high-pressure or high-precision scenarios. In practical applications, it is recommended to consult the manufacturer for customized solutions based on process parameters.
