Power Recovery System Brochure

Your Partner for Hydraulic Power RecoveryThe Sulzer AdvantageSulzer has years of experience applying reverse running pumps as power recovery turbines. Hundreds of Sulzer Hydraulic Power Recovery Turbines (HPRTs) are installed in refining hydrotreaters, gas processing and nitrogenous fertilizer plants - around the world.Expertise ApplicationsThe Right Product• In several industrial processes, a fluid under high pressure must be throttled to suit subsequent process steps. Typi cally, conventional pressure reducing valves are used to dissipate, and consequently waste this hydraulic energy.• Hydraulic Power Recovery Turbines (HPRTs) can convert the excess pressure into mechanical shaft energy and in crease the overall process efficiency. However, saving energy is not only an economic aspect; a careful use of resources is also an important contribution to environmental protection.HPRTs can be found in the following applications:• Capture 800 kW to 1.6 MW of energy in fertilizer plants• Capture 800 kW in power recovery in refining hydrotreat ers• Capture 600 kW in gas processing plants• Hydraulic turbines come in various shapes and sizes. For higher flows common in process streams, centrifu-gal pumps in reverse rotation are ef-ficiently used as HPRTs. For high flows and lower pressure differential, mixed flow, or axial flow (propeller) type verti-cal pumps may be used as HPRTs• Sulzer has the right products to sup-port your pumping and HPRT needsTaking on Your Challenges2Whatever the Process, We Have the Pumping SolutionsYou set out the challenge, we present the solutions.A gas-scrubbing HPRT application can recover more than 2 MWStartuppumpStartupmotorLevel controllerBypassSour gasLean amine streamSweet gas streamAminecontactorStripperPump MotorClutchHPRTThe HPRT may be used to drive a pump, generator, compressor or other rotating machinery. Speed is gov-erned by the inlet control valve, motor or generator and the electrical grid frequency. If required, a one-way clutch between a motor and the HPRT prevents the HPRT from robbing power from the train under low flow startup conditions. Due to high gas volume fraction carryover, experience strongly indicates that conservative speeds are prudent on Pump-Motor-HPRT trains in fertilizer plants.Typical Hydraulic Turbine InstallationsSplit range liquid level controllers are typically used to regulate turbines. The controller adjusts the HPRT inlet valve or further open the bypass valve when the turbine is overpowered. Overspeed trip devices are often furnished with hydraulic turbines. This device shuts the HPRT inlet valve and acti-vates overspeed alarms when required.34Pump and HPRT Products KEY CUSTOMER BENEFITS BBS radially split, 1 and 2 stage pumps are primarily used in process applications in refineries and petrochemical plants. The BBS double suction impeller is particularly suited to low Net Positive Suction Head Available (NPSHA) applications. Like the HSB above, they can be utilized to capture energy as an HPRT.APPLICATIONS • Booster as well as high speed crude shipping services• Sulfate removal• Process HPRTKEY CHARACTERISTICSCapacities Up to 4,200 m3/h / 22,000 USgpmHeads Up to 350 m / 1,500 ftPressures Up to 51 bar / 740 psiTemperatures Up to 425°C / 800°FBBS, CD AND HZB RADIALLY SPLIT SINGLE STAGE PUMPS ISO 13709 / API 610 BB2BB2BB1KEY CUSTOMER BENEFITS When run backwards and reconfigured as an HPRT, the HT-HSB or HST is a economical solution to a pressure reducing application. They are one of the world’s most popular nitrogenous fertilizer plant HPRTs. APPLICATIONS • Crude oil pipelines • Heavy duty auxiliary applications• Fertilizer HPRTsHSB HORIZONTAL AXIALLY SPLIT SINGLE STAGE BETWEEN BEARING PUMP ISO 13709 / API 610 BB1KEY CHARACTERISTICSCapacities Up to 10,00 m3/h / 45,000 USgpmHeads Up to 550 m / 1,800 ftPressures Up to 150 bar / 2,200 psiTemperatures Up to 205°C / 400°F5KEY CUSTOMER BENEFITS BBT/BBT-D 1 and 2 stage pumps are primarily used in process applications in refineries and petrochemical plants. The BBT-D double suction impeller is particularly suited to low NPSHA applications. Both the BBT and BBT-D may be utilized as HPRTs. BBT/BBT-D AND CD 2-STAGE RADIALLY SPLIT PUMPS ISO 13709 / API 610 BB2KEY CHARACTERISTICSCapacities Up to 2,300 m3/h / 10,000 USgpmHeads Up to 760 m / 2,500 ftPressures Up to 100 bar / 1,440 psiTemperatures Up to 425°C / 800°FAPPLICATIONS • Seawater and crude oil boosting applications• Process HPRTKEY CUSTOMER BENEFITS MSD/MSD2/MSD-RO are double volute opposed impeller pumps used in refinery charge, high pressure Reverse Osmosis (RO), Liquefied Petroleum Gas (LPG) and refined product pipelines. Over 10,000 are installed. Some are used as HPRTs in amine units and hydrotreaters. KEY CHARACTERISTICSCapacities Up to 3,200 m3/h / 14,000 USgpmHeads Up to 2,900 m / 9,500 ftPressures Up to 300 bar / 4,400 psiTemperatures Up to 200°C / 400°FMSD, MSD2 AND MSD-RO AXIALLY SPLIT MULTISTAGE PUMPS ISO 13709 / API 610 BB3APPLICATIONS • Pipelines • Water injection • CO2 pipeline and injection• HPRTsBB36KEY CUSTOMER BENEFITS SJD (API) process pumps are specified wherever limited NPSH is available, either due to system constraints or liquids operating near their vapor pressure. Typical applications include liquefied petroleum gas booster and cryogenics. They can be used as HPRTs as well.SJD VERTICALLY SUSPENDED PROCESS PUMP ISO 13709 / API 610 VS6KEY CHARACTERISTICSCapacities Up to 3,800 m3/h / 20,000 USgpmHeads Up to 700 m / 3,000 ftPressures Up to 75 bar / 1,100 psiTemperatures Up to 205°C / 400°FAPPLICATIONS • Shipping of liquefied petroleum gas (LPG) • Crude oil pipeline booster • Debutanizer/depropanizer services in cryogenic gas plantsKEY CUSTOMER BENEFITS CP volute style pumps are used in both oil production and high temperature refinery applications. They are particularly suited to low specific gravity applications where the back-to-back design and center bush provide natural axial balance and additional shaft support. They also make excellent HPRTs for high pressure letdown services. CP HORIZONTAL RADIALLY SPLIT MULTISTAGE BARREL PUMP ISO 13709 / API 610 BB5 KEY CHARACTERISTICSCapacities Up to 1,000 m3/h / 4,400 USgpmHeads Up to 7,000 m / 23,000 ftPressures Up to 425 bar / 6,250 psiTemperatures Up to 425°C / 800°FAPPLICATIONS • High pressure oil transport• Onshore water injection• Offshore crude oil shipping• Process HPRTsKEY CUSTOMER BENEFITS GSG radially split pumps are used in oil production, refining and boiler feed applications. They are available in both inline and back-to-back rotor configurations. The GSG back-to-back pumps make excellent HPRTs for high pressure letdown process applications.APPLICATIONS • Onshore or offshore water injection• Offshore crude oil shipping• Process HPRTsKEY CHARACTERISTICSCapacities Up to 900 m3/h / 4,600 USgpmHeads Up to 2,600 m / 10,000 ftPressures Up to 300 bar / 4,500 psiTemperatures Up to 425°C / 800°FGSG DIFFUSER STYLE BARREL PUMP ISO 13709 / API 610 BB5BB5VS7ReferencesHydrotreater Charge Pump with the HPRT (China)MSD-D 3 Stage Double Suction Pump with a HT-HSB Single Stage HPRT (USA)CHALLENGESA separate booster pump is installed on the pump skid to increase the pressure of the available quench oil for Plan 32 from 12 bar to 40 bar. Due to safety concerns, mechanical seals and seal system static pressure designed to pump and HPRT Maximum Allowable Working Pressure (MAWP) and Maximum Allowable Working Temperature (MAWT).SOLUTIONHPRT train: pump with API 682 plans 23 & 52, double extended shaft motor, over-running clutch, and HPRT with plans 32 and 53C. API 614 lube system supplies entire train.CHALLENGESCO2 flashes out of solution as pressure is reduced through HPRT, and when excited through pump. Resulting shock loads can increase maintenance costs.SOLUTIONSelect seal system to isolate seal faces from CO2. Use heavy duty shaft for rotor rigidity. Select larger pump and HPRT at reduced speed.PRODUCTSPump GSG 150-360/6+6, MAWP 260 bar MAWT 318°CHPRT GSG 100-300/6+6, MAWP 176 bar MAWT 400°CPump/motor/HPRT skid is nearly 12 m long x 3 m wide and weighs nearly 40 tonnesPRODUCTSPump 16x18x26 MSD-D 3 stageHPRT 16x18x27 HT-HSBCUSTOMER BENEFITS • HPRT converts pressure into 631 KW shaft power and increases the overall process efficiencyCUSTOMER BENEFITS • HPRT converts pressure drop into 1,600 KW of shaft power and increases the overall process efficiencyE10141 en 6.2014, Copyright © SulzerThis brochure is a general product presentation. It does not provide a warranty or guarantee of any kind. Please, contact us for a description of the warranties and guarantees offered with our products. Directions for use and safety will be given separately. All information herein is subject to change without notice.www.sulzer.com