Application range of high pressure blower

Description

Aquaculture

Evisceration
Before any further processing can take place, fish and molluscs must be gutted and cleaned. Worktables are outfitted with suitable vacuum nozzles that extract the entrails from the fish. A central vacuum system then pipes the combination of liquid and coarse particles through a filter where they are separated for proper disposal.

Fish feeding 
The fish food distribution is arranged through pressure pneumatic systems from barges or ships to the fishes in open water (aquaculture cages).

Fish handling 
Vacuum is used to suck live fish mixed with sea water from fishing boats, farming basins or buffering pools to processing plant, and from feeding cages to grading machines. Vacuum pumps are also used in pressure mode to displace live fish from the storage vessels to the slaughter point.

Fish pond aeration
The water’s oxygen content can be substantially increased using rotary lobe blowers, which increases the volumes of fish that can be kept in a pond. In this process, air is drawn from the atmosphere and forced through an inlet into the tube aerator. It is then diffused into the water through tiny openings and rises in fine bubbles. The oxygen in the water causes the fish to grow and multiply more rapidly, significantly increasing the yield.

Packaging
Air and the oxygen that it contains have harmful effects on the quality and durability of fresh food. For this reason, many processes need evacuation. The classic vacuum application in this field is vacuum packaging. Before sealing, a centralized vacuum system evacuates the air out of the packet. Suction groups are used in numerous packaging machines for industrial use.

 

Wastewater treatment 
The aeration tanks in wastewater treatment plants are activated with oxygen by using compressed air. A thorough mixing of the sludge with oxygen increases the gas yield and reduces its retention time in the tank. Blower or low pressure screw compressor technologies can be found in fish process wastewater treatment plants.

Chemical and Pharmaceutical
such as cooling, distillation, degassing, drying, compression of gas, pneumatic transport, recovery solvents, thin layer evaporation, liquid conveying.

Clean liquid handling
A very wide range of clean fluids can be handled in chemical and pharmaceutical sectors by means of centrifugal pumps.

Coating
When industrial surfaces are coated, metal vapours are handled under vacuum. In typical processes the metal condenses as a thin layer on the surface of the substrate. Vacuum is necessary to keep the metal vapours under pressure.

Cooling
Surfaces are cooled through the controlled evaporation of water or other solvents. The latent heat of the substrate and the vacuum remove the localised heat, causing a cooling effect.

Degassing
Extruders are typically used for product degassing. In extruders highly viscous substances are compressed and simultaneously freed of solvents. The vacuum pump used serves exclusively to evacuate low boiling point solvents as well as any air that has entered the material through leaks.

Distillation
Wastewater that is contaminated with solvents must be treated for environmental reasons. The simplest method is vacuum distilling, where the low-boiling-point fraction is evaporated and then condensed. The wastewater is then transported elsewhere for further use.

Drying
All medical products are dried before entering the marketplace. Solvents are removed from the product in heatable static or dynamic dryers. The advantage of vacuum drying is that the product can be processed at low temperatures. The temperature always corresponds to the vapour pressure of the solvent being used.

Gas compression
Gases must be compressed before they can be pumped through pipelines for further use. In many cases this compression is also necessary in order to reduce the volume of storage space required.

Impregnation
Impregnation involves the following process: the final product is evacuated in a receiving vessel. A suitable impregnating agent, such as a resin, penetrates the surface of the material under vacuum.

Pneumatic conveying
Chemicals can be conveyed safely and economically with stand-alone compressors or blowers.?Dust free and?therefore loss-free conveying, simple design of the?piping and no deformation of the conveyed material are assured.

Process liquid handling
Centrifugal pumps are used to transfer different types of process liquids in chemical plants.

Solvent recovery
Wastewater that is contaminated with solvents must be treated for environmental reasons. The simplest method is vacuum distilling, where the low-boiling-point fraction is evaporated and then condensed. The wastewater is then transported elsewhere for further use.

Thin layer evaporation
This process, which is also called molecular evaporation, is used to separate substances that have narrow boiling point ranges. Such equipment has a special design that only operates properly at specific vacuum levels.

Environmental
applications: desalinisation, biogas production, biogas recovery, slurry drying process, landfill gas recovery, soil gas extraction, suction vehicles for wastewater, mechanical vapour compression and recompression, truck-hydroexcavation.

 

Biogas production
The biomass produced in activated sludge and clarifying tanks is stabilised in the digestion tower and used to produce biogas. A thorough mixing of the sludge increases the gas yield and reduces its retention time in the reactor. During the process, gas is withdrawn from the upper part of the digestion tower, compressed and reintroduced through the nozzles at the bottom.

Biogas recovery
This is the process of transfering the biogas from the digestor to the endothermic coogenerating engine or from digestors to upgrading stations.

Desalinisation
Desalinisation is the process of removing dissolved salts from seawater or brackish water. Desalting technologies can be used for many applications, most commonly to produce potable water for domestic or municipal purposes.

 

Landfill gas recovery
The digestion of covered household waste produces landfill gas. The gas is collected and removed from the landfill, where it is compressed by gas compressors or blowers. This gas can then be used as a heating fuel, converted into electricity or used as liquefied gas.

Mechanical vapor compression and recompression
This process uses thermo-compression to extract water as clean condensate from polluted fluids. Because only the heavy residuals are required to be sent for further treatment, a considerable amount of water is recyclable. The distillation process acts inside an evaporator, where a rotary lobe blower is used to pressurise the vapour, in order to produce clean water condensate.

Slurry drying process
Farm processes install a phase-separation plant to dry slurry using rotary lobe blowers for vapour recompression processing.

Soil gas extraction
This is an approved method for the reclamation of soil polluted with hydrocarbons. Depending on the volume, distribution and saturation pressure of the pollutants and the air flow through the soil, vacuum blowers are used with operating depth range between 10 – 80 m.?

Suction vehicles for wastewater
Vacuum pumps provide suction pressure for removing and flushing out contaminants in wastewater and for cleaning sewer networks.

Truck-Hydroexcavation
The process uses pressurised water and an industrial-strength vacuum to excavate and evacuate soil simultaneously. After the soil is broken up, it is conveyed by vacuum, along with the water slurry to a debris tank.

 

Food and Beverage 
dairy, food packaging, evacuation, food preservation, evisceration, pneumatic conveying, concentration systems, degassing, evaporation, drying, removal of impurities, milking systems, fermentation and process fluids handling.

Concentration systems
Concentration systems are used to concentrate a food product (for instance tomato sauce), which is normally diluited into a solution.?
Vacuum pumps are normally used to generate vacuum for lowering the product boiling point of this thermal process, saving energy and preserving food quality.

Dairy processing
On cheese production process, LRVP provides vacuum to lower the boiling point in thermal treatment steps of production process. On yoghurt filling machines the vacuum pump positions the lids on pre-filled containers. Suction cups on the machine grip the lids, separate them and move them into the correct position.

Degassing
In mineral water production systems, vacuum pumps can be used to remove carbon dioxide from the water.

Drying
Drying process of humid and wet food items can be achieved with vacuum systems. The wet product (for instance yeast) is spread on a drum filter, the interior part of drum filter is connected to a vacuum pump and thanks to negative pressure the product is dried.

Evacuation
Air and water vapours are evacuated using vacuum pumps. Because of higher requirements for quality of food with regard to flavour, colour, homogeneity and durability, meat processing uses more and more vacuum, too, e.g. in filling machines, tumblers and cutters.

Evaporation
This process uses thermo-compression to extract water as clean condensate from polluted fluids released by food processing (for instance candy production). Result is that heavy residuals are concentrated to allow further treatment or waste disposal while producing a considerable amount of recyclable water. The distillation is processed inside an evaporator where a rotary lobe blower is used to pressurise the vapor, in order to produce clean water condensate. Since this vapour is generally acidic and chemically aggressive, the blower must be encased in stainless steel and use special seals.

Evisceration
Before any further processing can take place, fish and molluscs must be gutted and cleaned. Worktables are outfitted with suitable vacuum nozzles that extract the entrails from the fish. A central vacuum system then pipes the combination of liquid and coarse particles through a filter where they are separated for proper disposal. The same is possible in the poultry sector.

Fermentation
Pressurised air provided by Rotary Lobe blowers or screw compressors is used to mix food items (for example yeast) in fermentation vessels in order to facilitate product fermentation and drying.

Filling and closing machines
When bottling beverages, cosmetic or pharmaceutical products, the bottle is first evacuated before being filled to make sure the product reaches the customer in good quality.

Food packaging
Air and the oxygen that it contains have harmful effects on the quality and durability of fresh food. For this reason many processes need evacuation. The classic vacuum application in this field is vacuum packaging. Before sealing, a vacuum pump evacuates the air out of the packet. Vacuum pumps are used in numerous packaging machines for industrial use, e.g. chamber machines, forming machines, carousel machines and tray sealing machines.

Food preservation
Fruits, vegetables and their subsequent products, such as mash and purée, are preserved through cooking. To obtain a high product quality and energy efficiency, the preservation process is carried out under vacuum.

Milking systems
Milking systems need vacuum for sucking milk from animals and to convey the milk to a main point of storage.

Pneumatic conveying
Negative and positive pressure pneumatic conveying systems are typically used to convey food ingredients (sugar, flour, powders) from one point to the next.

Process fluids handling
Food ingredients such as sugared water solutions, salted water solutions, vegetal oils are often handled in the production process by means of centrifugal pumps.

Removal of impurities
Pulp products such as tomato or fruit pulps needs to be cleaned from impurities. Selecting equipments used to intercept and remove impurities from food pulp are coupled with vacuum pumps or vacuum blowers in order to provide the vacuum required for sucking impurities.

General Manufacturing
central vacuum systems, pneumatic conveying, lifting system, air knives, fluid transfer, industrial cleaning, glass forming, drying and more.

Air Carpet
Under vessel air blowing by means of rotary lobe blowers or screw compressors reduce friction between vessel and water during heading / cruising.

Air knives
Air from rotary lobe blowers or screw compressors ?is pumped to injectors for priming air knives used to spread coatings on metal coils in steel factories.

Air lifting
Carton panels, wood panels, products packed in bags can be handled by means of suction cups to which vacuum is provided by rotary lobe blowers.

Central vacuum systems
Central vacuum systems provides a single source of vacuum in multi downstream entry points of a plant. Typical examples are the vacuum system used in hospitals (collection of the rubbish coming from the different departments) in big buildings vacuum cleaning systems, in plastic processing, paper processing and many other vacuum applications.

Feeding inert gas
Rotary lobe blowers are used to feed inert gas into oil / gas tanks on vessels, in order to prevent explosion conditions.

Fluid transfer
A very wide range of clean/dirty/heavy process fluids can be handled by means of centrifugal pumps. Also auxiliary service fliuds (example water for cooling towers) are typically handled with centrifugal pumps.

Gas handling
Rotary lobe blowers are used for hydrocarbon recovery.

Holding and lifting
To ensure safe processing, work pieces are automatically clamped to the processing table by means of suction heads. A stable and constant minimum vacuum must be generated to ensure that work pieces are held securely in place during mechanical processing.

Industrial cleaning
Rotary lobe blowers are used in industrial vacuum cleaning equipments of medium/large size in order to provide vacuum.?

Jet dryer
In coil drying air is supplied through rotary lobe blowers.

Lifting system
Liquid ring vacuum pumps and rotary lobe blowers are used for handling and lifting different materials.

Metalization
Blowers in vacuum booster configuration are used in combination with a primary pump in order to create high vacuum in metalic coating equipments.?

Painting
Centrifugal pumps can be used for handling wastewater recycling systems in paint equipment.

Pick and place
General “pick and place” operations are frequently handled with vacuum equipment using various technologies such as liquid ring pumps and blowers. Pre-engineered package systems are also available.

Pneumatic conveying
In the pioneering age of pneumatic conveyance, demand was largely for transporting food stuffs such as grain and flour. Today, such installations are constructed for a wide variety of uses, such as transporting goods in dust particle form (flour, cement), solid bulk (pneumatic tube conveying systems) and mixed goods.

Preservation
Before or after processing, wood must be protected against the destructive effects of environmental influences such as heat, moisture, insects and micro-organisms. The practice of soaking the wood in a preservative solution is widespread, but has the disadvantage that the liquid penetrates only a few millimetres into the wood. Complete protection is possible, however, if the wood is degassed and dried with the aid of a vacuum pump. The preservative agent then penetrates much deeper and optimizes the protective effect.

Vacuum in glass forming
Large volumes of compressed air and vacuum are required in the manufacturing of hollow glassware.

Wood drying
The use of vacuum dryers in conventional wood drying chambers can reduce a typical drying time from several weeks to a mere 3 to 4 days. During the drying process, pressure in the chamber is gradually reduced to the minimum. The chamber is pressurized with steam and the air is extracted to prevent cracks and colour changes in the wood that can be caused by too high an oxygen content. Rotary lobe blowers circulate the steam and convey the heat to the wood. Further steam condensate will be exhausted from the drying chamber.

 

Lime and Cement
such as pneumatic conveying, lime cement fluidization, combustion air, cooling air, combusted gas recovery, fluidization, FGD and lifting.

Combusted gas recovery
This application applies to lime kiln integrated in steel factories. Combusted gas is recovered from blast furnace chimney and conveyed to lime kiln to be used as combustion fuel.
Combustion gas are very aggressive and heavily polluted, therefore rotary lobe blowers with special seals and materials are used for this application.

Combustion air
Air is fed into the kiln / furnace for combustion process.

Cooling air
Air is fed into the kiln / furnace for cooling of fuel injection lances.

FGD
Depending on SOx compound amount and related law constrictions on the maximum SOx level allowed, combusted gas from cement oven often needs to be treated before being released. PD blowers or compressors are used to provide air to air diffusion system.

Fluidization
Air pumped by a blower or a compressor to fluidize cement powder inside stocking silos.

Lifting
Cement bags are handled and lifted using vacuum.

Lime cement fluidization
Air feeds into cement and lime silo for fluidization process to prevent product aggregation.

Pneumatic conveying
Negative and positive pressure pneumatic conveying systems are typically used to convey solid bulk from a starting position (typically stocking silos) to another (typically buffer silos or process). ?Thanks to the air flow and ?the ?pressure built up in the piping, solid items float and are handled to destination point where they are separated.

Medical
Central vacuum systems
Central vacuum systems are used in hospitals and ambulant surgical centres to draw off liquids occurring during surgery.

Steam sterilization
In a steam sterilizer the hot, saturated steam is condensed when coming into contact with the cooler object to be sterilized, which absorbs the heat released. This leads to the denaturation of the germs, the molecular structure of their protein being destroyed.

Mining
Methane gas extraction
Blowers are used to remove methane gas from underground coal mine basins.

Ventilation
Rotary lobe blowers are used to provide necessary air ventilation into coal mines.

Plastics
such as cooling and drying, extruder and rubber degassing, granulate conveying and forming.

Cooling and drying 
The material leaving the extruder is very hot and must be cooled immediately, either by means of compressed air or with water. In the latter case, blowers are used to blow dry the plastics.

 

Dryers
Plastic granules are subjected to varying temperatures in storage and when being transported. Through the condensation of the atmospheric humidity on the surface of the granules, moisture may be absorbed by capillary action, depending on the time of year, the weather conditions and the type of plastic involved. For high quality end-products, the maximum limits for moisture in the granules must not be exceeded. In basic systems, drying is performed by hot air dryers, while more efficient plants employ dry air dryers. In the latter case (and by contrast with hot air drying), the processing air is carried in a closed circuit and is directed through the material (granules or powder) for the purpose of drying it. A dehumidifier (molecular sieve), positioned in the return airflow, removes the moisture in the atmosphere. In this way, a constant flow of pre-dried air is always available in the approach to the dry silo. The air is conveyed by a blower. Most modern dryers have two drying agent containers so that the processor need not interrupt the drying process in order to regenerate the moisture-laden drying agent. Regeneration is likewise performed by a blower.

Extruder degassing
In the case of recycled material, vacuum pumps remove air inclusions, moisture and adhesives from the molten plastic. They extract all the low-molecular substances in order to obtain the optimum quality, i.e. a smooth surface, high strength, better insulation properties and a lower out gassing rate, resulting in recyclable material which achieves the same level as new material.

Forming
Liquid ring vacuum pumps and otary lobe blowers are used in the packaging production, specifically to make proper forms in plastic layers (i.e. for plastic plates, glasses and wire glands).

Granulate conveying
Plastic presses and extruders are automatically fed with the aid of blower or vacuum pumps. A distinction is made between conveying by means of a vacuum and by means of pressure. In the former case, a blower generates a partial vacuum in the material container and the granules are carried along with the air flowing through the hose line. A filter prevents the granules from penetrating into the rotary lobe blower or vacuum pump. More elaborate pressurized conveying systems consist of a compressor blower, a material storage tank, a pressurized conveyor tank (or cellular wheel sluice) with a push-type material feeder and, at the end of the conveying line, a container with dust-collecting filter.

Rubber degassing
Production units for rubber parts used in the automobile industry require vacuum to evacuate the die casting moulds, to avoid air bubbles and to accelerate the rubber mass.

Power Generation and Oil & Gas
flue gas desulphurisation, bed combustion fluidization, condenser evacuation, sand oil fields and cleaning liquids recovery.

Bed combustion fluidization
The circulating fluidized bed technique allows to burn highly sulphurated products while respecting a low emission rate of issue of sulfur and nitrogen oxides in the fireplace. The fluidisation air of the outlet beds, siphons and ashes coolers is supplied by positive displacement blowers.

Condenser evacuation
Condenser exhausting involves the removal of air and other non-condensable gases from the steam space of power plant condensers.

Flue gas desulphurisation
In power plants, a continuous flow of low-pressure air is used to remove sulphur dioxide from the exhaust flue gases. To guarantee uninterrupted pollution control and make sure these plants are up and running continuously , the used compressed air solution needs to be highly reliable and energy efficient.

Recovery of cleaning liquids
Centrifugal pumps are used for liquid handling, cleaning and recovering in auxiliary services / processes in refineries.

Sand oil fields recovery
Vacuum blowers are used to suck water and sand mixture, after being used during crude oil extraction by means of pressurised water injection process.

Pulp and Paper
Clean liquid handling
Centrifugal pumps are used for liquid handling, cleaning and recovering in auxiliary services / processes in pulp and paper mills.

Pulp drying
Vacuum is used throughout the forming section of a paper machine to remove water from the paper stock. In the forming section, varying levels of vacuum are applied across the flat boxes and couch rolls to remove the bulk of the water.

Pulp handling
Process centrifugal pumps handle various types of paper pulp.

Tissue
Suction pickup and transfer rolls use vacuum to transfer the paper from the forming section to the press section and guide the sheet from one felt to another in the press section.