Description of the Technological Process | Granulation of powders in a fluidized bed. |
Basic description of the production process | The granulation process of raw materials in powder form is carried out in the STREA dryer-granulator. During granulation, powder granules of 1–2 mm in size are obtained. |
Volumetric flow rate (m³/h) and temperature of the gas-dust flow entering the filtration system | No more than 6,000 m³/h |
Emission characteristics of the objects: | |
- Dust concentration at the inlet to the gas cleaning system (mg/m³) | No more than 25 g/m³ |
- Size of captured particles and fraction distribution, granulometry | • Min value 10 µm |
• Max value 500 µm | |
Harmful gases at the inlet of the gas cleaning system | None |
Physical properties: | |
• Angle of repose | 30–45° |
• Hygroscopicity | Present in some formulations |
• Tendency to stick together | Yes |
• Abrasiveness | No |
• Flammability | No |
• Explosiveness | Yes, due to dust content in the airflow |
Required material for equipment manufacturing | Structural steel |
Operating mode of the equipment (continuous/intermittent) | The STREAM dryer-granulator operates in an intermittent mode. Equipment downtime occurs during loading of raw materials and unloading of the finished product. During this time, filter cleaning can be performed. The average process time for granulate preparation is 1.5 hours. |
Characteristics of the existing gas-dust filtration system (if available) | Filtering elements inside the equipment housing. |
Intended placement of the newly developed dust and gas filtration system | The dust and gas filtration system will be installed outdoors. |
Preferred filter regeneration method | Compressed air cleaning. Vibration cleaning is desirable, provided that vibration of filter plates is achieved using compressed air rather than an electric motor with cams. |
Compressed air (allowable consumption, operating pressure, purification class, etc.) | There is a compressor unit for producing and purifying compressed air with a capacity of 3,000 l/min at a pressure of 10 bar. |
Discharge method | Manual |
Explosion and fire safety requirements | Explosion-proof and fire-protected design. |
Need for recirculation of cleaned air | Discharge of cleaned air into the atmosphere. |
Characteristic | Data |
Air capacity, m³/h | 6,000 |
Filtration area, m² | 70 |
Filter bag material | Polyester |
Density | 500 g/m³, calendered (burned to a smooth surface) on one side |
Hydraulic resistance, Pa | 2,000 |
Maximum vacuum, Pa | 5,000 |
Operating temperature in the filter, °C | Up to 150 |
Short-term temperature (no more than 5 minutes), °C | Up to 160 |
Dust concentration at filter inlet, g/m³ (max) | 80 |
Dust concentration at filter outlet, mg/m³ | 5-10 |
Compressed air pressure, bar | 5-7 |
Compressed air consumption for cleaning, L/min | 300 |
Weight, kg | 1,900 |
Characteristic | Data |
Air capacity, m³/h | 3,000 |
Resistance, Pa | 2,000 |
Maximum cleaned gas temperature, °C | 150 |
Filtration area, m² | 27 |
Filter bag material | Polyester |
Dust concentration at filter inlet, g/m³ (max) | 30 |
Dust concentration at filter outlet, mg/m³ | 5-10 |
Compressed air pressure, bar | 5-7 |
Compressed air consumption, L/min | 100-200 |
Control and automation cabinet | 1 unit |
Material | Carbon steel |
Explosion relief membrane (pressure relief membrane) | Included |
Additional grounding | Included |
Antistatic filter elements | Included |