Your Pump Solution for the Biogas Industry.

Your Pump Solution for the Biogas Industry.

For a clean environment. Biogas plants play an increasingly important role in environmental protection around the world. Unlike burning fossil energy sources such as coal, natural gas or petroleum, biogas is CO 2 -neutral because the carbon dioxide released in the process is part of a natural cycle. In addition, the use of renewable biomasses, such as energy crops, helps to save these limited resources. The basis for achieving the largest possible gas yield and therefore economic success is efficient plant management. Among other factors, this depends on the choice of the equipment used: It should be reliable and easily maintained coupled with low energy consumption. As a leading international provider of products and services for pumping and treating liquids, seepex offers a wide range of solutions to match the specific requirements of your biogas plant. The modular seepex system allows us to offer the optimal technical and economic solution for transporting fermentation products and conveying almost all process-related products. Each pump is individually selected to the specific requirements of your sector, your company, your installation location and of course your application. More than 600 employees around the world make sure of this. They develop, manufacture and market your conveying solution whether progressive cavity pumps, macerators or controlling systems. No wonder the biogas industry without our pumps is inconceivable. We are a member of the German Biogas Association (Fachverband Biogas e.v.) and of the ADBA, Anaerobic Digestion and Biogas Association, Great Britain. 2

seepex BN range pumps for conveying fermented products that can also contain solids like shards of glass or small pieces of plastic. Biogas industry Pumping of: Corn and corn silage Digestate Faecal sludge Food waste Liquid substrate, such as liquid manure Recirculate Solid manure Waste fodder 3

Biogas plant application overview. Schematic diagram of a biogas process Coferments Control system BGDC BN Recirculate Silo/collecting vessel BTH/BTHE BN Macerator Liquid substrate BN Fermenter (mixing tank) Biogas Pumps of range BN convey liquid manure, cooking oil and flotation sludge. Pumps of range BN are used for important conveying jobs, such as pumping fermentation products from the silo. 4

BN Digestate reservoir Fermenter (secondary fermentation) Biogas BN Block heat and power plant Digestate residue preparation, fertilizer Heat Electricity Miscellaneous vegetable waste before conversion to biogas. Pumps of range BN combined with seepex macerators inline, convey and homogenize various fermentation products. 5

The seepex bio substrate mixing system for fermentation product conveying. Thoroughly mixing the solid and liquid fermentation products before feeding them into the fermenter has two fundamental advantages: larger gas yield thanks to greater bioactivity reduced energy consumption thanks to less stirring in the fermenter Our bio substrate mixing system is the ideal solution, consisting of a sturdy feed hopper pump from product group T, a standard BN range pump and the Biogas Control System BGDC for short. The feed hopper is generously proportioned. The rotating screw mixer and conveyor ensures efficient mixing of solid fermentation products like: corn and corn silage waste fodder solid dung food waste Bio substrate mixing system, consisting of seepex BTH and BN pump ranges with Smart Conveying Technology, SCT. It also ensures good mixing of the liquid substrates added by means of the standard pump, such as: liquid manure recirculate faecal sludge The prepared fermentation mass is then pumped by the feed hopper pump to the mixing tank or directly into the fermenter. We offer various designs of feed hopper pumps matched to the properties of the fermentation products being conveyed. In particular, the BTH range pump is already used successfully in many biogas plants. This special and unique seepex development has a separately driven and reversible ribbon screw that is decoupled from the pump train itself, achieving the best mixing and pumping results. The Biogas Control System unit combines all the important controller properties: The duration of mixing and the needs-based feeding of the solid and liquid content can be adjusted individually. Optimized process settings can be saved and accessed at any time. Easy to integrate into a higher-level plant control system using flexible bus systems. Benefits Increased gas yield Reduced energy consumption Efficient plant operation thanks to optimized process control Comprehensive range of feed hopper pumps specifically matched to your fermentation products 6

Systematic flow chart of the fermentation product transportation process step Coferments Control system BGDC Recirculate BTH/BTHE Silo/collecting vessel BN Liquid substrate Fermenter (secondary fermentation) Fermenter (mixing tank) Biogas seepex BTH range pumps ensure thorough mixing of the fermentation products with subsequent pumping. Bio substrate mixing system pumps of range BTH and BN BTH 70-12 Conveying product: silage, fermentation product consisting of solid dung, waste fodder Conveying capacity: 20 m 3 /h (88 GPM) Pressure: 4 bar (58 PSI) Temperature: 20 C (68 F) BN 35-6L Conveying product: Liquid manure Conveying capacity: 16 m 3 /h (70 GPM) Pressure: 1 bar (14.5 PSI) Temperature: 20 C (68 F) 7

Innovative Smart Conveying Technology, SCT. The seepex innovation Smart Conveying Technology SCT for short is an essential component of the seepex bio substrate mixing system. It has been tried and tested thousands of times in solutions for a wide range of conveying tasks. The advantages of this intelligent, patented technology over standard progressive cavity pumps or rotary lobe pumps become apparent in biogas plants, in particular. Examples include the area of fermentation product and re-circulate conveying. Necessary maintenance work on the rotor and stator can be carried out with minimal effort and in the shortest of time, thanks to ingenious design principles meaning that downtime is kept to a minimum. The pump remains in its place during servicing and the connected pipelines do not have to be removed. Smart Conveying Technology makes replacing the rotor and stator up to 85 % faster. The integrated retensioning device means that the stator s service life can be increased by up to 30 % and the rotor s life by up to 50 %. All these advantages lead to reduced life cycle costs and greater productivity and economic efficiency for your biogas plant. Benefits Longer durability for rotor and stator thanks to integrated retensioning device Extremely easy maintenance due to fast assembly/ dismantling of rotor and stator High productivity due to short maintenance downtimes Small space requirement as no space needs to be included for removing the stator Easy handling during maintenance due to low-weight components Pump of range BT 130-6LS Conveying product: Food waste Conveying capacity: 40 m 3 /h (176 GPM) Pressure: 3 bar (43 PSI) Temperature: 5 40 C (41 104 F) 8 Pumps of range BN 17-6LS and BN 70-6L BN 17-6LS Conveying product: Faecal sludge Conveying capacity: 8.5 m 3 /h (37 GPM) Pressure: 2 bar (29 PSI) Temperature: 5 40 C (41 104 F) BN 70-6L Conveying product: Faecal sludge Conveying capacity: 60 m 3 /h (264 GPM) Pressure: 2 bar (29 PSI) Temperature: 5 40 C (41 104 F)

Pumping solutions for food waste. Due to its relatively large energy content, waste from the food industry is increasingly being fermented in biogas plants. This includes: food scraps, production residues, rejected batches, excess production expired goods such as cooking fats and oils dairy waste, baked goods abattoir waste or food by-products fryer residues fruit and vegetable waste grains However, the use of this waste should not have a negative effect on either the biogas process or the agricultural use of fermentation residue. In this context, it is important to macerate or homogenize the waste. It is also advisable to transport the waste in a closed system to avoid unpleasant odors. seepex BTM range pumps convey and chop in a single step. Thanks to their specific characteristics, our products are ideally placed to fulfil these requirements. The BTM range pump with an integrated cutting unit that we developed and patented is the only one of its kind on the market. It chops and pumps in a single step. Even large-sized conveying products such as whole pieces of fruit or perished poultry can be processed. No additional grinder is needed, leading to a significant reduction in investment costs. In addition to this, we offer macerators that chop waste into particularly small pieces, thereby homogenizing it. Benefits Saving on investment costs Positive effect on the biogas process thanks to material maceration and homogenization Pumping in a closed system to avoid unpleasant odours BTM range pump chops and pumps in a single step Pump of range BN 17-6L and macerator 25I Conveying product: Miscellaneous food waste Conveying capacity: 8 m 3 /h (35 GPM) Pressure: 1.5 bar (21 PSI) Temperature: 20 C (68 F) Pump of range BTM 17-12 Conveying product: Food waste Conveying capacity: 3.6 m 3 /h (16 GPM) Pressure: 2 bar (29 PSI) Temperature: 5 40 C (41 104 F) 9

Your pump solutions at a glance. seepex pumps gently transport low to highly viscous products with or without solids, as well as low or high-temperature products with low pulsations or low shear action. They also feature excellent metering precision. Pumps from the BN range are used in almost all industrial sectors. They convey low to high viscosity materials with or without solids with a ds content of up to 15 %. They are also used for conveying liquid manure and recirculate. Range BN with Smart Conveying Technology > Conveying capacity: 30 l/h 500 m 3 /h (0.13 2,200 GPM), Pressure: up to 48 bar (720 PSI) BTH range pumps feature a separately driven, concentrically rotating ribbon screw with a maximized diameter and long pitch. Through separate control of the conveying screw speed, the BTH pump can be used for almost any conveying media. The variable speed auger permits optimum filling with the solid fermentation products. Even media that tend to form bridges can be handled with ease due to the large screw diameter of the BTH pump. Range BTH/BTHE Combined with BN range pumps and the control system BGDC, the BTH is a basic component of the bio substrate mixing system. > Conveying capacity: 0.5 m 3 /h 130 m 3 /h (2.2 572 GPM), Pressure: up to 36 bar (540 PSI) A special characteristic of the BTM range is the patented macerator integrated into the compression zone. The knives on the rotating conveying screw chop the fed products in combination with the cutting tools fastened in the compression housing. Integrated into a closed system the pump permits macerating of fruit, vegetables or abattoir waste, for example, with subsequent pumping. Range BTM > Conveying capacity: 0.25 m³/h 130 m³/h (0.22 2,200 GPM), Pressure: up to 36 bar (540 PSI) 10

Factors such as dosing liquids and solids and mixing these materials are important process parameters that need to be adjusted individually. Optimized process settings need to be saved and accessed at any time. All these important characteristics are included in the seepex BGDC control system. It is an basic component of our bio substrate mixing system. Control system BGDC Macerators from seepex reduce the size of solids and fibers in the pumped medium. In biogas plants, this leads to further maceration or homogenization of the fermentation products. seepex macerators are available as inline designs with integrated solid separators and universal versions for direct installation in a pipeline or with a supply container with a direct connection to a seepex pump. Range I > Flow rate: up to 150 m 3 /h (660 GPM) See our Product groups and ranges brochure for further solutions for a wide range of applications. 11

And what can we get flowing for you? Your nearest contact: Or visit www.seepex.com BIO 6.11E