Velocity measurement for careful material transport

ENVEA is a leading manufacturer of environmental management solutions to protect people and our planet. ENVEA’s products and solutions include ambient air, emissions and process monitoring systems, such as gas analysers, dust monitors, solid and flue gas flow meters, as well as environmental data processing and reporting solutions. ENVEA is headquartered in Poissy (France) and employs more than 1,300 full-time employees in research and development centres, production facilities and local sales and service units in France, the United Kingdom, Germany, Italy, the USA, India and China. ENVEA offers the following products and solutions for bulk solids in various applications and industries: Material flow monitoring Point level / level control Continuous moisture measurement Volume measurement Filter breakage monitoring Dust emission measurement Bulk density measurement Velocity measurement Silo protection systems

POWTECH - World Leading Trade Fair for Processing, Analysis, and Handling of Powder and Bulk Solids Take advantage of the overall dynamics offered by POWTECH, the leading exhibition for experts in powder and bulk solids technology! This event provides a presentation platform for innovations and advancements in processes for the manufacture of quality products made and processed from powder, granules, bulk solids and liquids – also for the environmental and recycling sector Within the mechanical processing technology sector, POWTECH is the largest and most international sector platform worldwide for processes used in the manufacture of quality products from powder, granules, bulk solids and liquids. From fine nano particles to coarse stoneware – this is the only event to show the special features of bulk solids handling in their entirety. Here you reach process technicians and engineers, bulk materials experts, production managers, scientists as well as process and project engineers. See for yourself the specialist and professional depth of the meetings and discussions from engineer to engineer. Here you are brought together with trade visitors with specific questions and a profound professional understanding – this is confirmed by the exhibitors in 2017: 93 % of the exhibitors reached their most important target groups. 92 % of the exhibitors established new business relations.

Continuous dust concentration measurement A food manufacturer refines dairy products. The dust-laden exhaust air created during the manufacturing process is extracted by suction and cleaned by industrial filter systems. With increasing abrasion of the filter elements, the dust content in the exhaust air may rise and lead to increased environmental pollution. The continuous dust measurement (mg/m³) is also regulated for this process. This official regulation is fulfilled by the plant operator with the installation of a calibrateable, electrodynamic measuring device. Process data Customer: Food manufacturer (Germany) Product: Dairy product powder Permitted limit: 20 mg/m³ Installation location: Clean gas side after a dust cyclone Function: Continuous dust measurement The solution The ProSens system can be calibrated and continuously monitors clean gas sides after filter elements for permissible dust concentrations. The calibration With the Dosed-Reference-Method developed…

Transportation of minerals Application In the extraction or processing of natural stones those stones (basalt and lava) in different sizes are transported to a first screening by a conveyor belt. In some cases the screen may occasionally become blocked. As soon as the screen is clogged, the stones jam in the feed chute. If this blockage reaches the previous belt, it might be damaged. The common consequences: costly and time-consuming production downtimes. Process data Costumer: Mineral company Material: Stones (basalt and lava) Installation: Feeding chute behind conveyor belt Function: Protection of conveyor belt Solution The ProGap S with filling-signal-suppresion is a universal and flexible sensor for level detection, based on proven microwave technology. In this application the ProGap S is used to detect the dumming of the stones in the discharge chute after the conveyor belt. Upon reaching a critical level monitored by the ProGap S, the transportation…

Elimination of material build ups and pollution Application A manufacturer of building materials producing drywall products. The production process uses clay, which is fed by a screw conveyor from a silo onto a conveyor belt. Between the two conveying devices the material quantity requires to be measured. This was performed by an Impact Flowmeter. Using the Impact Flowmeter the clay caused contamination and material build up. Our client contacted SWR to offer a solution to eliminate the current problems and also being able to increase the throughput. The system had to be able to be maintenance free over a long period. Process data Customer: Building materials industry (Germany) Product: Clay Volume: 650 kg - 3 t/h Installation location: Freefall after screw conveyor Function: Contactless measuring in freefall, replacement of an Impact Flowmeter Solution The MaxxFlow HTC is a non-contact flowmeter capable of measuring high flow rates of dry bulk solids from the discharge…

Particle sensor for on-line monitoring of coarse grain in the flow Application In many industrial processes control screenings and fractionation play an important role, as well as the reliability of the used screens. In continuous processes a screen damage can cause significant costs. In case of such a damage great quantities of screening material have to be destroyed or sieved again. A product recall, if necessary, can be very expensive for the manufacturer. The analysis of grain size in a material flow is time consuming and not suitable for the detection of a sieve failure arising in a short term. Even a continuous maintenance or a regular exchange of the sieves can‘t prevent a defect. The screen break detection Paddy is helpful here. Process data Costumer: Bulk processors and manufacturers Material: Any kind of bulk material Installation place: Discharge of material after sieve Function: Monitoring of grain size after screening process or fractionation Solution Paddy is a particle sensor which…

Optimal adjustment of the drying process in pellet production with M-Sens 2 Application A manufacturer of wood pellets processes raw materials such as planing chips or wood chips (wood waste) to produce wood pellets. After delivery of the wood waste, it is cleaned from extraneous material like metal and stones by a separator. Afterwards the material is crushed by a hammer mill and dried. The crushed material is then transported by a conveyor belt through a 90 °C convection oven. After leaving the oven a screw conveyor transports the wood chips to a storage silo. To assure the material quality, it is desirable for the moisture of the material to be measured during its transport to the storage silo. If the moisture is not correct, the drying process should be changed automatically. Process data Customer: manufacturer of wood pellets (Germany) Material: chipped wood Transport means: screw conveyor Installation location: screw conveyor after oven Moisture: 3 - 8 % Solution After the drying process the material‘s…

Exhaust gas cleaning in a pneumatic conveyor system Application An international mining company extracts minerals under ground for the fabrication of fertilizers. For the long term improvement and safety of the structure stability fillings and binders (dry bulks) with defined recipes are injected locally into former mining cavities. These materials are delivered above ground, stored in silos and afterwards transported in a closed-pipe pneumatic conveying system to storage silos below ground. There the fillings and binders are mixed with a salt solution, pumped to the cavities and eventually harden. The silos used for the intermediate storage are under negative pressure for safety reasons. They are equipped with a silo vent filter (main filter) and a downstream security filter (secondary filter). This assures the air purity according to legal regulations, which is measured constantly after the security filter. When a specified limit value is reached, an alarm should be transmitted to the control room. Process…