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Inquiry (采购产品): CNG Compresor To the marketing and sales department, CC&L Engineering has a Natural Gas supply project in Calcutta, India. This project requires compressores and all other equipment for the pilot project. The requirement is immideate. According to the information I have found from internet regarding your company background and product, your company probably has all above or partial equipment, which will satisfy our requirements listed below. Please review our requirements and if you have product/equipment, which canl satisfy our requirement, reply back to me as soon as possible for further detail discussion. Due to the order from government of India, our time is very short for the pilot project. Therefore your prompt response would be appreciated. If you don’t have or you are not interested, please do not bother to reply me. Thank you, Sam Chakravarti CEO/President The Shakti Company 605 Shenandoah Road Corona, CA 92879 951-310-3427 (cell) the_shakti_co@yahoo.com Director CC&L Engineering Kolkata (Calcutta) India 011-91-33-2-465-8694 matara7@hotmail.com matara8@yahoo.com Required Specification: Now the model would like to have for Kolkata has this specification which I have calculated. Please do recheck with the technical expert of RIX. I guess the model number of this compressor at RIX is 4VX4BG-23.3. This model also has two specs: 1. 25 SCFM from 1/4 PSI suction to 4500 PSIG, FOUR STAGES, 990 RPM, 25 HP. 2. 40 SCFM from 10 psig suction to 4500 PSIG, four stages, 990 RPM, 30 HP. Our exact requirement: This above mentioned model will be the probable model for our required compressor which will A. Intake CBM (Coal Bed Methane) gas at 1 bar = 14.4 PSI pressure. This is the inlet pressure of the gas. We will get either from Oil and NATURAL Gas Corporation of INDIA, which is also COAL BED METHANE GAS. B. We would like to produce 3000 kg per day = 4500 Standard Cubic Meter = 159750 SCF of gas per day= 159750/24 = 6656.25 Standard Cubic Feet per Hour =6656.25/60 =110.93 SCFM (Standard Cubic Feet per Minute). C. Ultimate suction pressure will 4500 PSIG, Four stage compressor.990 RPM, more than 40 HP. D. Hardware Requirements are standard for the all the compressors which are as follows: Steel skid, Adjustable Motor Slide Base, V- Belt Fly Wheel Drive, OSHA Belt Guard (Aluminum), Cooling fan and Shroud. E. GAS PLUMBING : Suction Filter- Y strainer, Inter- after cooler, air -cooled radiator style (stainless tubes aluminum fins), Inter stage and discharge relief valves, Suction, inter stage and discharge panel mounted pressure gauges,2.5" Wika liquid - filled discharge check valve, Unloaded start up valve ( solenoid operated diaphragm type , to customer vent). INLET RELIEF AND GAS BLOCK VALVE BY CUSTOMER AS REQUIRED. Gas packing vents: plumbed to bulk head fitting in distance piece covers with flex tubing. ELECTRICAL / CONTROL SYSTEM: 30 HP drive motor (Please DO CHECK THE MOTOR SPECKS CAUSE THE GAS PRODUCTION IS MORE IN THIS CONFIGURATION), 380/3/50, TEFC Premium eff, F2. 3/4 HP cooling fan motor, 380/3/50, TEFC, 1450 RPM (Please do verify the speed also in this case). Motor starter (IEC spec- 380 volt) with control power transformer, pushbuttons, hour meter, Nema 4 ENCLOSURES. Sensors and Switches: Discharge gas pressure switch, adjustable dead band, for auto start/stop control (Ashcroft) Low gas suction pressure switch, adjustable dead band (Ashcroft) High gas temperature RTD (with Fuji Elec. digital indicator) Low oil pressure switches (Barksdale). MISC: Vented distance piece covers Oil pressure gauge, crankcase mounts RIX standard paint, blue RIX standard crating Model specific operating and maintenance manuals. The following items are required for the package: General: - Mount unit on sturdy steel skid (firm floor mounting of skid preferred). - Provide adequate cooling fan and shroud for inter/after cooler and cylinder cooling. - Provide 3/4 HP cooling fan motor ,1200-1800 RPM,56 frame , 5/8" shaft (larger frame can be accommodated with modified motor mount bracket. Fan hub in or air discharge (motor) side. - Provide drive motor with HP rating as recommended by RIX. (Note terminal box location). - Compressor rotation is counterclockwise viewed from flywheel side. Piping: - Provide suction filter. -Provide intercoolers with an approach temperature of 15-25 degree F. - Provide inter stage moisture separators where condensate will be present. - Provide Suction Relief valve as required to prevent over pressurization. - Provide inter stage and discharge relief valves. - Provide suction, inter stage, and discharge pressure gauges. -Provide unloaded startup by relieving pressure in all stages down to suction pressure. - Back pressure regulator required on units with 5/8" diameter or smaller pistons unless otherwise stated. Safety Shutdowns: - High gas discharge pressure and low gas suction pressure. -High final stage gas temperature. IF DISCHARGE PRESSURE WILL vary widely, an interstage temperature shutdown is required, since final temperature switch will not protect unit at LOW DISCHARGE PRESSURES. - Low oil pressure (15 seconds three delay required). Coordination with seller to assure that control system will provide operating features, trouble shooting capabilities and sufficient alerts, and /or shutdowns for safe operation based on degree of planned operator interface. MISC: Distance piece covers on air and N2 units must be adequately vented to minimize pulsations in the distance piece area which could cause oil to be drawn up through the piston rod oil seals. Testing: -Initial starts up and de-bug (break-in if noted in quote). - Perform 4 hour minimum test at full pressure - Provide test results to RIX for overview. Please configure the machine for the inlet pressure of 15 PSI (1 bar=1kg/centimetersquare). The SCFM is already mentioned above. At least the compressor will be able to produce 3000 kg of CNG per day. **** Hidden Message ***** Sam Chakravarti 605 Shenandoah Corona, CA 92879 USA Company: the Shakti Co. and CC&L Engineering Title: CEO and Director Phone: 951-310-3427 Fax: 951-737-5560 E-mail: the_shakti_co@yahoo.com **** Hidden Message ***** the_shakti_co@yahoo.com
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