Biomass Feeding Rotary Lobe Pumps
Review rotary lobe pumps for prepared biomass slurry and paste feeding to biogas digesters, with attention to substrate preparation, inlet feeding, interrupted supply, and grit wear.
Request Pump SizingDefine the Prepared Substrate Entering the Pump
Identify the silage, crop residues, food waste, or manure blend after preparation and mixing. Review the pump as part of the complete feeding system; loose dry straw or unprepared solid biomass should not be treated as a pumpable liquid.
- Flow behavior
- Slurry or poorly flowing paste. Provide total solids, moisture, blend proportions, temperature, and observations of settling or hopper bridging. Total solids alone does not establish feedability.
- Fibers & contaminants
- Length, size, and loading. Describe crop fiber length separately from soil, sand, stones, plastics, and other foreign material reaching the feed system.
Inlet Feeding, Hopper Layout & Transfer Duty
Confirm that prepared substrate reaches the pumping chamber continuously. A full hopper can still bridge above the outlet. Where gravity feed is unreliable, review substrate preparation, hopper geometry, and assisted feeding together rather than assuming a pump change will resolve it.
If an auger-assisted arrangement is proposed, match its delivery rate and controls to the pump duty. Review startup load and discharge pressure using the actual substrate and pipeline layout, including rest periods and batch changes.
| Review Point | Why It Matters | Data Needed |
|---|---|---|
| Inlet supply | The pump needs a consistent supply at its inlet | Preparation steps, hopper dimensions, outlet geometry, assisted-feed arrangement |
| Required feed rate | Batch delivery and pump capacity must be coordinated | Normal and peak rate with units, batch size, feed duration, density if converting mass to volume |
| Pressure and startup | The drive must suit both starting and running conditions | Discharge pressure, pipe diameter and length, elevation, shutdown duration, substrate behavior |
Feed Interruptions & Seal Support
Batch feeding, bridging, and an empty hopper can interrupt liquid supply even while the drive is running. Review level detection, feeder-pump coordination, shutdown conditions, and the restart sequence for these events.
Confirm the selected seal arrangement and its support requirements. Any allowable priming or empty-running exposure depends on configuration, speed, duration, and controls; seal support does not replace a reliable inlet supply.
Field Contamination, Wear & Maintenance
Harvested feedstocks may contain soil, sand, stones, or foreign material. Review upstream removal and particle sizes before selecting passage geometry and wear components; long fibers and hard contaminants require separate consideration.
Select rotor coverings, seals, liners, and wear plates against the actual blend, temperature, and abrasive loading. Confirm replaceable parts and access for cleaning the hopper, feeder, and pump. Inspection intervals should follow observed wear rather than a general service-life claim.
Data for Biomass Feeding Pump Sizing
- Substrate: feedstock and blend proportions, total solids (% by mass), moisture, temperature, fiber length, flow behavior, and grit or foreign material.
- Duty: required feed rate with units, batch size and timing, discharge pressure, shutdown duration, and any current bridging or wear problems.
- System: preparation and mixing steps, hopper and feeder layout, pipe sizes and lengths, elevation, available drive and controls, and maintenance access.
Request Biomass Feeding Pump Sizing
Share your prepared substrate characteristics, feeding duty, and installation layout through our contact form for an application review.
Request Pump Sizing