Due to a new bearing and shaft design it is possible to increase the maximum admissible differential pressures to 25 bar in the process gas compressors VRa 236 H and VRa 336 H. Thus, with a multi-stage unit discharge pressures of up to 53 bar abs. can be reached.

Tags: Aerzen, compressors, screw compressor, oil-free screw process gas compressor, Aerzen USA

Turbo Blowers. Positive Displacement Blowers. Hybrid Rotary Lobe Blowers. Which one should you choose for your wastewater treatement application? How much energy can you really save? Who can you trust to give you an objective answer? The best place to start is by downloading the Engineer's Mini-Guide To Blower Technology Selection.

Tags: Aerzen, positive displacement, compressors, Aerzen USA, pd blower, rotary lobe blower, turbo blowers, blower sizing, wastwater, water treatment, WWTP

Plant air is a known energy sink and you may not think of a shop air compressor as an area that can be made more sustainable.  At Aerzen’s LEED certified facility in Coatesville we initially were not able to improve upon old concepts at first either.  During the course of the last three years we were able to make significant changes to reduce its environmental impact. Adding an electronic controller, variable speed drive, remote monitoring and recycling waste heat did a fantastic job reducing the carbon foot print of the compressed air system.  They are simple ideas that you can implement in one way shape or form.  Your bottom line may be affected by this more than you think. 

Tags: positive displacement, rotating equipment, compressors, screw compressor, oil-free screw process gas compressor, Aerzen USA, oil-flooded screw compressor, pneumatic conveying

Tags: positive displacement, rotating equipment, compressors, screw compressor, Aerzen USA, rotary lobe blower, pneumatic conveying

Have you ever pondered the term of "preventative" maintenance?  Well, I have often done so and must admit that I had to laugh when I pictured how this was supposed to actually work in a plant setting.  It conjured up visions of maintenance people getting a "call" from the machine controls in question and telling them to come in soon as one of the bearing will fail next Sunday night at 4:05am.  While we are closer than ever in diagnosing machinery problems and averting the worst from happening, we are not able to be able to exactly "predicting" when the usable time of a piece of equipment will come to an end.  Precision maintenance is when you identify, prioritize and implement a condition monitoring philosophy that is trending based and is designed provide a review process for any process and incident occurrence.    

Trending is the key to success with precision maintenance.  At Aerzen USA we make good use of state of the art condition monitoring devices that fit any budget.  From low cost vibration sensor based switches to full blown online monitoring systems ranging from IFM Efector's VKS, Octavis and Multiplex devices we have the trending system that will fit anyone's budget. 

Tags: Aerzen, positive displacement, rotating equipment, compressors, Aerzen USA, pd blower, rotary lobe blower, pneumatic conveying

Is it not amazing how many different lubricants there are in a industrial or even a municipal waste water treatment plant?  At the outset the problem is not all that challenging.  Lubrication or maintenance managers usually start by compiling a complete list of machines and the lubricants they need as per their respective operation manuals.  So far, so good.  Than it starts to get complicated, because maintenance techs, operations people or lubrication crews need to do the actual work and more often than we realize they need to make their own mental notes to remind themselves which machines takes what lubricant.  Sometimes people use permanent markers or other devices and leave themselves scribble notes directly on the machines themselves.  How many times has that caused any machinery trouble at your plant? 

There are many solutions that can help avert such issues.  One effective one comes from the Lean Manufacturing program called 5S in which - among other important aspects - lets you sort and mark all items you need to do your job with.  This is perfect for lubricants.  Visual signals such as color coding bins, drums and cans and using the same colors on markings on the actual equipment will make anyone's life a lot easier and also help you reach the maximum service life of your equipment. 

Tags: Aerzen, positive displacement, compressors, oil-free screw process gas compressor, Aerzen USA, pd blower, rotary lobe blower, oil-flooded screw compressor, pneumatic conveying, aeration

Oil-free compressors are most often used in process gas applications. Hazardous, poisonous or simply dangerous gases are usually being compressed and conveyed by our screw compressors. It is critical therefore, that such conveying media be sealed against leaks to the atmosphere or, in the case of gases incompatible with lubrication oils, against leaks into the compressor's lubrication system. Dry gas sealing systems are often applied for such tasks.

Tags: Aerzen, positive displacement, rotating equipment, compressors, flare gas compression, screw compressor, oil-free screw process gas compressor, coke oven gas, lime-kiln gas, hydrogen, Aerzen USA, seal gas

Tags: Aerzen, positive displacement, rotating equipment, compressors, screw compressor, oil-free screw process gas compressor, pd blower, rotary lobe blower, turbo blowers, sliding vane compressor, oil-flooded screw compressor