L_Series L_500 Liquid Ring Compressors
L_500 Compression of process gases In 2002 The Nash Engineering Company in the USA and elmo vacuum technology GmbH, a Siemens subsidiary in Germany, united to form nash_elmo Industries. The L_500 liquid ring compressors were created specifically for the chemical and petrochemical processing industries. They combine the highest standard of reliability with a new level of ingenuity. nash_elmo utilizes advanced design technologies to achieve optimum capability. The multidisciplinary design process relied on input from R&D, manufacturing, marketing and most importantly our customers the chemical process engineers. The result: a revolutionary line of compressors tough enough to be branded nash_elmo. L_500 compressors at final inspection Advantages at a glance: Wide range of gases handled One-stage or two-stage compression up to 2,600 scfm (4,400 m 3 /h) Pressure capability up to 175 psig (12 bar g) Low temperature compression High reliability Long life cycle High operational safety Robust, low maintenance Main applications: Chlorine compression Hydrogen compression Vinyl chloride Pulp and paper bleaching process with ozone Recovery of hydrocarbons e.g. flaregas or gasoline vapors Acetylene compression and many others 2 nash_elmo Industries L_500
nash_elmo compressor capability chart Discharge pressure psig atm 40 80 120 160 175 100,000 m 3 /h scfm Suction capacity 28,800 additional models 17,000 9,000 10,000 2,600 2,000 1,500 L_500 models 1,000 1,000 500 160 atm 2 4 6 8 10 12 14 Discharge pressure bar g The right design nash_elmo designs and manufactures liquid ring compressors covering a wide range of capacities up to 17,000 scfm (28,800 m 3 /h) and pressures up to 175 psig (12 bar g). Our liquid ring design enables low temperature gas compression, ideal for handling many process gases, including explosive mixtures. The right materials Material choices include cast iron, ductile iron, steel and stainless steel, with other materials available on special request, ensuring the right metallurgy to handle most highly aggressive and corrosive vapors, as well. Single, double, and gas lubricated shaft seals are also available. The right protection nash_elmo L_500 compressors are built to ISO 9001:2000 standards. Most are also ATEX certified in accordance with guideline 94/9/EG, category 1 and 2. nash_elmo Industries L_500 3
L_500 Performance at a glance Features Benefits Rugged design High reliability Low temperature compression Ability to handle explosive and flammable gases Liquid ring Low maintenance/vibration Many material options Ability to handle corrosive gases Wide variety of seal options Meets process and safety needs ATEX certified High safety standards 100% performance tested Troublefree startup and operation Backed by 2 year warranty Peace of mind and over 100 years of vacuum and compressed gas experience We design and develop solutions engineered to your individual needs. Contact us for further details. 4 nash_elmo Industries L_500
Technical specifications: L_500 (models 2BK) D C A B Model A B C D Suction and discharge flange connections 2BK1 162 1270 380 510 250 DN80 mm 50 15 20 10 3-IN. FLG inches 2BK1 222 1520 510 760 380 DN100 mm 60 20 30 15 4-IN. FLG. inches 2BK1 282 1650 640 890 380 DN125 mm 65 25 35 15 5-IN. FLG. inches 2BK1 332 2160 760 1020 510 DN150 mm 85 30 40 20 6-IN. FLG. inches Inlet gas path Discharge gas path Operating liquid Model Suction capacity V Discharge pressure Power P m 3 /h scfm bar g psig kw hp 2BK1 162 300 900 175 530 4 60 50 100 65 135 2BK1 222 800 1600 470 940 5 75 50 200 65 270 2BK1 282 1250 2700 735 1590 4 60 80 250 105 335 2BK1 332 2500 4000 1470 2355 4 60 120 350 160 470 nash_elmo Industries L_500 6
Technical specifications: L_500 (models 2BG) C D A B Model A B C D Suction and discharge flange connections 2BG1 150 1265 380 635 250 DN80 mm 50 15 25 10 3-IN. FLG. inches 2BG1 151 1400 380 635 250 DN80 mm 55 15 25 10 3-IN. FLG inches 2BG1 231 1900 760 890 380 DN125 mm 75 30 35 15 5-IN. FLG. inches 2BG3 189 1270 760 635 250 DN80 mm 50 30 25 10 3-IN. FLG. inches Inlet gas path Inter stage path Discharge gas path Operating liquid Model Suction capacity V Discharge pressure Power P m 3 /h scfm bar g psig kw hp 2BG1 150 200 400 120 235 10 145 50 150 65 200 2BG1 151 400 800 235 470 12 175 75 250 100 335 2BG1 231 900 1800 530 1060 9 130 300 500 400 670 2BG3 189 450 750 265 440 15 220 50 250 65 335 nash_elmo Industries L_500 7
Technical specifications: L_500 (models HP) Models HP4 thru HP8 C D Model HP9 A A B B C D Model A B C D Suction and discharge flange connections HP4 685 340 250 150 DN50 mm 27 13 10 6 2-IN. FLG. inches HP6 1090 635 510 280 DN100 mm 43 25 20 11 4-IN. FLG. inches HP7 1270 760 640 355 DN150 mm 50 30 25 14 6-IN. FLG. inches HP8 1520 940 890 430 DN200 mm 60 37 35 17 8-IN. FLG. inches HP9 1520 1400 1015 510 DN250 mm 60 55 40 20 10-IN. FLG. inches Model Suction capacity V Discharge pressure Power P m 3 /h scfm bar g psig kw hp HP4 255 350 150 205 5.5 80 40 75 55 100 HP6 750 900 440 530 5.5 80 90 160 120 215 HP7 950 1700 560 1000 5.5 80 180 300 240 400 HP8 1850 2900 1090 1705 5.5 80 225 450 300 605 HP9 2800 4250 1650 2500 7.6 110 600 1000 805 1340 nash_elmo Industries L_500 5
Functional principle of an L_500 compressor Single-stage The rotor 1 is positioned in the center of the elliptical casing 2. Centrifugal force causes the seal liquid to form a ring against the inner surface of the casing 3. The liquid is moving away from the center of the rotor in the inlet area, drawing the gas into the rotor chambers 4. As these chambers rotate, the liquid is pushed back into the chambers, compressing the gas before exiting at the discharge port 5. The internal forces are balanced due to the double-acting design, thereby reducing stress on the shaft, bearings and mechanical seals for longer pump life. Discharge 2BK models Inlet HP models 1 Rotor 2 Casing 3 Liquid ring 4 Intake port Inlet Discharge 5 Discharge port The brown arrows show the balanced forces in the compressor. Two-stage The rotors 1 are positioned eccentrically in two cylindrical casings 2. Centrifugal force causes the seal liquid to form a ring 4 against the inner surface of the casing. The liquid is moving away from the center of the rotor in the inlet area, drawing the gas into the rotor chambers 3. As these chambers rotate, the liquid is pushed back into the chambers, compressing the gas before exiting the first stage 5. The second stage functions in the same manner, but is rotated 180, thereby balancing the internal forces. This reduces stress on the shaft, mechanical seals and bearings, thus extending pump life. 2nd stage 2BG models 1st stage 1 Rotor 2 Casing 3 Intake port 4 Liquid ring 5 Discharge port 8 nash_elmo Industries L_500
Commitment, reliability and worldwide support For 100 years, we have been assisting our customers in making the right vacuum pump or compressor choice. As your engineering partners, we will provide you with a nash_elmo performance analysis which includes a review of your particular process requirements, and provides you with alternative means for meeting your process needs. We will supply engineering data and application information, along with short- and long-term cost comparisons. Beginning today and throughout the life of every nash_elmo system, our engineers are ready to support you to meet your vacuum and compressor process tasks. Factory tested Before any nash_elmo compressor is shipped out of our factory, it is performance tested to meet the highest standards. We stand behind our products: every nash_elmo L_500 pump comes with a TWO-YEAR WARRANTY. Our new test bay gives us the capability to simulate nearly all real operating conditions for liquid ring compressors. A global service network with local support nash_elmo maintains service centers strategically located throughout the United States, Europe and Asia. Each center is staffed by specialists with considerable application know-how. They have original factory replacement parts in stock and are equipped with the tools, fixtures and special machinery necessary for pump and compressor repair. The nash_elmo commitment to service extends to its regional distribution centers and retailers. Stocked with inventories of factory parts and purchased components, our distribution centers can deliver pumps and parts anywhere, any time. We are also able to service vacuum pumps and compressors of other makes and models. A new company, a unified vision nash_elmo is more than a new company. It is the fusion of global leaders in the development, design and application of vacuum and compressor system technology. Our combined resources give us the ability to provide the best solution to any industrial need virtually anywhere in the world. We are a company with an extensive range of products and services and an unmatched reputation for reliability. Because nash_elmo is a company with the resources to turn the most ambitious vision into reality and to put that vision to work for you. nash_elmo Industries L_500 9
Other nash_elmo product lines L_Series: Liquid Ring Pumps Robust technology for the highest demands and varied applications Machines in the L_Series distinguish themselves through low operating temperatures and are suitable for handling splash water, steam and condensates. They were developed for the toughest applications and can safely and reliably extract or compress even explosive gas/ steam mixtures (ATEX-certified). Selection of a suitable operating liquid enables the L_Series vacuum pumps and compressors to be optimally integrated into processes. Thanks to their low operating costs and extensive performance range up to 37,000 m 3 /h (22,000 cfm), they excel in any application. G_Series: V_Series: D_Series: Gas Ring Blowers Vane Pumps Dry Pumps nash_elmo Industries www.nash-elmo.com info@nash-elmo.com Corporate Headquarters Trumbull, CT USA 9 Trefoil Drive Trumbull, CT 06611-1330 Tel.: +1 800 553 6274 Proven, reliable and extremely quiet Whether vacuum pumps, compressors or systems for conveying air, gases or air/gas mixtures, the extensive range of products in the G_Series meets the widest range of requirements. Thanks to their variable voltage motors, many are usable anywhere in the world without the need for conversion. In addition to their compact construction, full UL/CSA certification and innovative design, G_Series pumps and compressors offer a comprehensive power range up to 2,500 m 3 /h (1,470 cfm), maximum power density and a wide selection of accessories, including frequency converters. Simple design for varied applications The vane pumps in our V_Series are known for their robust design, easy handling and long service life. Furnished with an extremely sturdy metal coating as well as installation- and service-friendly plug & play functionality, these high performance machines are extremely quiet in operation, and can meet even the most challenging industrial demands while covering an impressive performance range up to 4,000m 3 /h (2,350 cfm) and 10 bar g (145 psig). High reliability with low operating costs The dry-running vacuum pumps in our D_Series are explosion-proof and were specially developed for production processes involving sensitive materials. Throughout the entire process, they operate condensation-free and therefore corrosion-free because there are no operating fluids to mix with the process gases. As a result, discharge gases can simply be collected and/or returned to the process. There are no waste products. In addition, all pumps in the D_Series are highly efficient and provide a constant suction capacity over an extremely wide range of pressures with a performance range up to to 2,200 m 3 /h (1,300 cfm). European Headquarters Nuremberg, Germany Katzwanger Straße 150 D-90461 Nürnberg Tel.: +49 911 1454 0 Order-No: VNE:B-PB013-A2-AM Printed in Germany Dispo 27801 2238/021 16.0 / 04-2004 2004 All rights reserved HENNIG Nbg All illustrations are non-binding All dimensions are approximate. Subject to technical modifications