Cooling & Heating. POWERMAX TM Bi - drum, water tube, high efficiency boiler

Transcription

1 Cooling & Heating POWERMAX Bi - drum, water tube, high efficiency boiler

2 Improving your business is our business Thermax offers products, systems and solutions in energy and environment engineering to industrial and commercial establishments around the world. Its business expertise covers heating, cooling, waste heat recovery, captive power, water treatment & recycling, air pollution control & waste management and performance chemicals. Thermax brings to customers extensive e x p e r i e n c e i n i n d u s t r i a l applications, and expertise through technology partnerships and strategic alliances. Operating from its headquarters in Pune (Western India), Thermax has built an international sales & service network spread over South East Asia, Middle East, Africa, Russia, UK and the US. It has a full fledged manufacturing set up that is certified for ISO 9001:2000, ISO and safety management according to OSHAS (ISO 18000). In process heat, Thermax offers a wide range of steam boilers, thermal oil heaters and hot water generators. It has expertise in a wide range of fuels - oil, gas, solid and agro-waste/ biomass. Supporting a broad array of industries in generating, transferring and conserving heat across a host of applications, Thermax process heat products and systems are exported to North and South America, South East Asia, Middle East, Africa, Europe, CIS, Australia, Antarctica and SAARC. POWERMAX - the ideal boiler for continuous operations and superheated steam Rotary Fuel Pneumatic Spreader Fluidised Bed Sutable for n Indian Coal n Imported Coal n Kutch Lignite n Rice Husk n Castor DOC n Other select multifuel options n Under Bed, Over Bed and Combi-feed Fuel Feeding Nozzles Fuel Feeding Venturi Fluidising Nozzles Supply Dumping Grate Sand Bed Fuel Feeding Cross Plenum Chamber Dumping Grate Suitable for biomass fuels like Bagasse Wood Chips Pneumatic spreading Presenting the versatile two drum, water tube design, solid fuel fired boiler, popularly known as the Bi-Drum, that is custom made for your application. Powermax comes with several major advantages: n High pressure steam due to its water tube design n Uninterrupted operations n High degree of Superheat due to large super heater n The combustor can be adapted any type of fuel firing - Fluidized Bed Combustion, Travelling Grate, Reciprocating Grate or Dumping Grate - making the boiler suitable for burning any kind of solid fuel Riadiative Dosing Bin Traveling Grate Suitable for n Bagasse n Indian Coal n Imported Coal n Wood Chips n Palm Kernel Shell n Julia Flora n Pneumatic spreading n Mechanical spreading Variable Pitch Feeding Screw Reciprocating Grate Hydraulic Drive Ash Scraping Mechanism Sumerged Ash Handling system Rotary Fuel Mechanical & Pneumatic Spreader Hydraulic Drive Ash Collecting Hopper Convective Ash Collecting Hopper Primary air supply for zone wise combustion - Precisely controlled by electrically actuated damper Travelling Grate Combustion Reciprocating Grate Suitable for n Biomass Briquette and Pellete n Rice Husk n Wood Chips n Palm Kernel Shell n Palm Fibres n Other sized Biomass n High Moisture Biomass n Process Wastes n Jungle Waste n And many more... Combustion technology from Germany Customised options available for

3 Membrane Water Wall Furnace The furnace of the Powermax is made of membrane walls. This is an arrangement in tube and fin construction, which provides the advantage of a gas tight chamber, preventing the influx of air which, in turn, results in higher efficiency. The fuel characteristics determine critical parameters like height and footprint of a furnace, which ensure complete combustion. In superheated boilers, the furnace is provided with a nose wall. This provides radiation shielding to the convective zone of the superheater and prevents any overheating of the convective zone of the superheater tubes. The nose wall guides the flue gases to cover the entire convective superheater area. The membrane wall furnace also ensures that flue gases are cool enough to enter the boiler bank, and that no fouling takes place. Powermax comes with a superheater located at the top of the furnace. This superheater is a heat exchanger, which converts saturated steam into superheated steam. The superheater is constructed in two halves - radiation and convective zones - connected to each other by an attemperator. The convective zone of the superheater is shielded from radiation by a nose wall, which also guides the flue gases to cover the entire convective superheater area. The attemperator is a water injecting device that ensures temperature of the outlet steam is controlled within specified limits. Boiler Bank The boiler bank is a tube nest connecting the water and steam drums, where water is converted into steam. Downcomer portion of boiler bank, take the water to the water drum, and then a mixture of steam and water rises through, the riser portion of boiler bank tube to the steam drum. Water and steam are separated in the steam drum, and while the steam goes out, water gets re-circulated. The flue gases turn around in the bottom drum against the baffle wall and rise towards the steam drum. Ash separation takes place during reversal, and ash is collected in the hopper below the water drum. Left Side Flue gas from superheater Flue gas to economiser Front Side Nose/ Rear Membrane Wall Baffle Plate Ash collection at flue gas reversal Right Side Ash collection hopper Economiser Inbed Heat Exchanger Inbed heat exchanger is required only in fluidised bed combustor, where the heat exchanger is immersed in a bubbling sand bed, to help take away the heat from the bed. This helps in maintaining combustor temperature below the ash melting point using minimal excess air, which also results in higher efficiency. Since sand is continuously rubbing against the inbed tubes during operation, special studding is provided on inbed tubes to avoid erosion. The Economiser, made of bare tubes, aids in heat recovery and improving efficiency. Coming after the boiler bank, it uses the heat of the flue gases coming out from the boiler to preheat water going into the steam drum. Flue gas in Flue gas out Water out Water in Flue gas out Preheater The air preheater is also heat recovery equipment situated last in the flue gas path. It is a cross flow gas-to-gas heat exchanger, which provides hot air for combustion. out in Flue gas in

4 Pollution control equipment Cyclomax Power generation The Cyclomax is an arrangement of multi-cyclones. When dust laden gas enter the cyclone tangentially, the centrifugal force that develops due to the cyclonic action makes the dust particles move outward radially, they finally strike the wall and drop out of the gas stream into the hopper. Clean gas then flows out through the exit tube. For boiler applications, Cyclomax enables achieving emissions as low as 00 to 50 mg/nm. Bag Filter Bag filter is an arrangement of filtration material in the form of bags. When dust laden gases pass through the fabric, the dust is retained while clean air passes through. This dust, deposited on the outer surface of the bags, is removed by high pressure compressed air, operating in a pre-determined cycle. This air flow is led into the bags through a pulsesolenoid valve combination which is energized by a solid state sequential controller. Thermax bag filters come with features like casing entry, with perforated sheets that facilitates better gas distribution and pre-separation of coarser dust; bags with snap rings that ensure low outlet emissions; leakproof inlet-cum-bypass-damper and outlet damper for automatic system isolation under high/ low temperature situations for safety. For boiler applications, bag filters enable achieving emissions as low as 100 mg/nm. Powermax can support any of your power needs, be it extraction, condensing or a combination Electrostatic Precipitators Electrostatic Precipitators (ESP) is an arrangement of electrically charged electrodes. When dust laden gases enter the ESP through the inlet nozzle, dust particles get electrically charged by the emitting electrode. Due to the influence of this electrical field, these charged dust particles migrate to the grounded collecting electrode. The accumulated dust particles on the collecting plate are dislodged into the hopper due to periodic mechanical rapping. Clean gas then flows out through the outlet nozzle of the ESP. For boiler applications,the ESP enables achieving emissions as low as 50 mg/ Nm. steam Back Pressure Power generation using back pressure turbine is quite beneficial to many process industries. Normally, steam generation is controlled according to process demand and the power generated is incidental. The power generated may or may not be sufficient for the complete power requirement of the process house. The generated power is normally consumed parallel to the grid power or suitable alternative arrangements. Complete Condensing Power generation through condensing turbine is normally done with power generation as the prime objective. Here steam demand is controlled according to the requirement of power generation, and the power is normally consumed in an islanding mode. Extraction cum Condensing When power and process are both critical, and need to be catered to equally, Extraction-cum-Condensing Turbines are used. Steam generation is controlled according to the combined need for process steam and power. This power is consumed either by using a grid parallel or islanding system. Water from Water from Steam to Condense Water to Steam to Condense Water to Low pressure steam to process at constant pressure Low pressure steam to process at constant pressure

5 A typical coal handling plant Product Bucket Elevator Roof Truss with Sheeting Roofing Shed Loading Zone Recycle Bucket Elevator Vibrating Screen Crusher R.P. Gate Vibro A typical ash handling plant Boiler bank hopper Ecomomisher/ pre-heater hopper Polluction control equipment hopper Fly Ash Silo line out in Pneumatic Gate Valve Distance Piece Ash Conditioner Support A typical layout Registered Office D-1, MIDC Industrial Area, R. D. Aga Road Chinchwad, Pune , India Tel.: , Fax: enquiry@thermaxglobal.com In view of our constant endeavor to improve the quality of our products, we reserve the right to alter or change specifications without prior notice. All photographs shown in this publication are representative in purpose and are to be used for reference purpose only. Whilst this information is given in good faith, no warranty or representation is given concerning such information which must not be taken for establishing any contractual or other commitment binding on Thermax Ltd. For actual details and specifications, please refer the Thermax offer document. Thermax Business Portfolio Heating Cooling Power Generation Pollution Control Chemicals Water & Wastewater Solutions Solar Specialised Services