Examples of Agricultural BIOMASS:
Most traditional pump designs have difficulty handling BIOMASS because it often has a high content of sand or other solid matter, including plant remains, straw or similar, which has a tendency to plug up pump cavities or pipes when the flow path is altered.
LSM PUMPS however, operate according to a different principle, peristalsis, which can be compared to the movements of a digestive tract or expressed in a more common term: “As squeezing tooth paste out of a tube.”
Construction, Operation and Maintenance
The LSM PUMPS only has one wetted part the hose. All other mechanical parts are located separated from the fluid. The pump material is designed to withstand the temperature, pressure, corrosive and abrasive nature of the fluid.
A rotor with two rollers will compress the hose and squeeze the fluid forward. As a vacuum is created behind the roller additional fluid is sucked into the hose. This will refill the hose and subsequently be moved forward by the next passing roller.
Even though the hose is subject to abrasive conditions and wear from sand and stone, it will last substantially longer than traditional pump designs. This is attributed to the fact that the moving parts are located on the exterior side of the hose, thus protected from direct contact with the Biomass.
When a peristaltic pump requires service, the design allows for a quick, easy and low cost fix. The user will even be able to perform the service himself if so desired. The hose clamps are removed while the hose is exchanged, and then attached again when the hose is replaced. No special tools are needed to perform the hose exchange.
LSM PUMPS PERISTALTIC HOSE PUMP Features:
Longer Hose Life and Major Power savings compared to other hose pumps
No fluid exposed bearings or packing
No check valves or other mechanical devices in the fluid
Allow dry run without any damage
Self priming to 30 ft (9.5 m) H2O vacuum
Fully reversible and can be used to clear blocked inlet or upstream pipe
Ideal for the pumping of highly abrasive, corrosive and viscous fluids
Allows for fast installation and can be moved without major difficulties or expenses
Will handle corrosive and abrasive acid and caustic
Easy and quick maintenance and fast hose replacement without special tools
Example from a reference installation:
DAMMEN BIOGAS PLANT
Capacity: 2 MW Power
The plant was established in cooperation with the local Municipality. The Biogas plant receives manure from local cattle and pork farms, chicken fertilizer, fatty waste, corn and husk shell parts from bread manufacturing.
The Biomass feed is handled as follows: Corn and manure are stored in a mixing tank, and the substrate is then pumped into the digester with a LSM-100-SC Hose pump.
The dry matter content is 12%.
The corn is loaded into the mixing tank with a front loader.
Manure is pumped into the mixing tank from 2 receiving tanks, also with LSM Hose Pumps – see Manure Pumps below.
Corn 30 Metric Ton
Manure 170 Metric Ton
Total 200 Metric Ton
A daily total of 48 mixed batches with each a pumping time of 12 min. is processed, meaning 12 x 48 = 576 min. = 9.6 hours of pumping time per 24 hours.
The average pumping capacity per hour is 200 Metric Ton / 9.6 hours = 20.8 Metric Ton per hour.
LSM PUMPS HOSE PUMP: Model LSM-100-SC, Size 4”/DN 100/ PN16
Electric motor : 7.5 KW
Operating period: 36 months (so far)
Service: Preventive exchange of the pump hose after 200 days ~ 1,900 Operating hours.
Experience confirms that the hose will last approx. 2,500 operating hours.
The hose DID NOT show any wear, but the plant manager decided to perform preventive maintenance as he had negative experiences with previously installed centrifugal pumps. The centrifugal pumps had resulted in failures at least twice per month, resulting in plant shut down, expensive repair works and costly replacement parts.
The moving of MANURE in agricultural production rarely has the need for a big volumetric capacity. Therefore it can be advantageous to have an extended pumping period to save energy.
For this reason LSM Pumps has developed a smaller mobile pump equipped with a 3 – 4 KW motor, and where the motor only needs 16 Amps.
Compared to other hose pumps the LSM Pumps design provides double the hose life and half the power.
The same pump can easily be moved between manure tanks and also be used as both loading and off loading – this as the pumps are self priming and fully reversible!!
There are hardly any costs associated installing and moving these pumps between different tanks.
LSM PUMPS HOSE PUMPS are the ideal when you need to move “problem fluids” with high dry matter, abrasive, corrosive and highly viscous parameters.
They are self priming to 30 feet, dry running and provide uncomplicated installation, quick and easy maintenance.
LSM Pumps are available in many different standard sizes, with different hose materials and diameters, motors and gear.
LSM Pumps will tailor the standard pump to your specific application, leaving you with the best possible pump, the lowest energy consumption and the longest operating life between maintenance.