No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
operation was stabilized, the boiler started operating to full load, specific bed evaporator tubes of 2nd compartment both on left and right side of the boiler started failing. The failed tube locations are shown in photo 3. There are inner and outer tubes in …
Low Maintenance Design Features for AFBC Boilers. Water wall membrane type for maximum heat absorption and structural rigidity; Four stage steam separation to ensure zero carryover; …
2 Brief Construction Features of AFBC Boiler The bed coil tube of AFBC boiler operated for about 1,000 h has the dimensions of 51.0 mm OD and 7.0 mm thickness. The fuel used in the boiler is coal of size 6 mm. In the AFBC system, the water from the boiler drum is made to run through six down comers. It enters the inlet header of bed
These include Superheaters, Economisers, studded Bed Coils, Screen tubes, Boiler Bank tubes, tube bends and Fin welded Membrane Panels. Manufactured from carbon steel or chrome-molybdenum alloy steel tubes, all pressure part components undergo stringent inspection and certification by the Boiler Directorate of West Bengal or 3rd party ...
The boiler is a single drum, natural circulation water tube, balanced draft, under bed and over bed firing, top supported pressure parts and bed plate design atmospheric fluidized bed combustion (AFBC) boiler [1]. Combustion is construction with bed plate type's assembly with air distribution nozzle (bubble caps) for combustion air distribution.
The bed coil tube of AFBC boiler operated for about 1,000 h has the dimensions of 51.0 mm OD and 7.0 mm thickness. The fuel used in the boiler is coal of size 6 mm. In the AFBC system, the water from the boiler drum is made to run through six down comers. It enters the inlet header of bed coils and then passes through water-wall to outlet header.
Fluidized Bed Combustion takes place when the forced draught fan supplies air to the Furnace of the Boiler.In the furnace, and is (used for the Bubbling phenomenon) placed on the Bed and is heated before fluidization, the air enters the bed from the nozzles fitted on the Furnace Bed.And above the nozzles; the sand opposes the upward motion of the air.
Studded Tubes / Coils: Boiler Bank Tubes: These are boiler feed-water heaters in which the heat from waste flue gases is recovered to raise the temperature of feed water supplied to the boiler, thereby increasing the Fuel Economy, Steaming Capacity, Life of the Boiler and Reducing Pollution. ... afbc (2) alloy (6) ...
AFBC boiler is a very developing technology now these days this technology is widely used in the industrial boiler for the purpose of efficient and clean burning of coal and other fuel for steam generation. afbc boiler is suitable for combustion of low quality fuel . ... TOP 12 TECHNIQUES FOR FINDING BOILER TUBE LEAKAGE DURING RUNNING BOILER ...
CBL's AFBC boiler offers efficient, cost-effective, and reliable steam generation. The benefits include fuel flexibility, high efficiency, low emissions, and reduced capital and operating expenses. ... Its smoke tube portion has a large water holding capacity along with a large water-steam interface area. This ensures 98% dryness of steam ...
TBWES's bubbling type AFBC boiler offers efficient, cost-effective and reliable steam generation and is a viable alternative to conventional solid fuel-fired boilers for industrial applications. ... Thermax executed a biomass fired …
Atmospheric Fluidised Bed Combustion (AFBC), which promises to provide a viable alternative to conventional coal fired and other solid fuel fired boilers for utility and industrial applications. …
Spent Wash (Vinasse) Fired Boiler ¡ Capacity: Up to 75 TPH, Pressure: Up to 66 bar (g), Temp: Up to 480°C Support Fuels: High ash, coal,imported coal, bagasse ¡ Washery rejects fired in AFBC & CFBC boilers ¡ Petcoke fired in AFBC & CFBC boilers Circulating Fluidized Bed Combustion Boiler (CFBC) ¡ Capacity: Up to 1000 TPH ¡ Pressure: Up to ...
Guaranteed 99.99 % steam purity even under conditions of rapid load changes. In line, spaced bed evaporator tubes for better access to bed plate. Pin studs welded on inbed. walls …
TBWES's bubbling type AFBC boiler offers efficient, cost-effective and reliable steam generation and is a viable alternative to conventional solid fuel-fired boilers for industrial applications. …
Studded Tubes are used to increase the Surface Areas to achieve higher Heat Transfer Rates. They are used in Fluidized Bed Coils and Fluidized Bed Superheaters. They are also used in …
Manufacturers of Boiler Pressure Parts & Boilers Components like Superheater, Economiser, Boiler-Bank Tubes, Water Wall Panels, Steam Headers, Studded Bed Coils
General Arrangements of AFBC Boiler AFBC boilers comprise of following systems: i) Fuel feeding system ii) Air Distributor iii) Bed & In-bed heat transfer surface iv) Ash handling system. Many of these are common to all types of FBC boilers. 1. Fuel Feeding System For feeding fuel, sorbents like limestone or dolomite, usually two methods are ...
This fluidization velocity is high for the AFBC boiler system, it should be in the range of 2.5-2.6 M/sec. If it goes high then, naturally elutriation of fines will be more. ... The secondary pipes were selected as 60 NB. For the insertion of the secondary air pipe, one water wall tube was removed, and a seal box was provided.
Inbed tubes will be studded. 2 stage/3 stage super heater with inter-stage spray attemperator. Hooper bottom design for specific applications. Boiler capacity - Upto 150 TPH. Standard …
A steel industry that has a 90 TPH AFBC boiler designed for the following two low GCV coals. Indian coal with GCV of 3500 kcal/kg & 3000 kcal/kg. During the visit, the boiler was mostly operated with different GCV mixes of Indian coal varying from 4100 kcal/kg to 3500 kcal/kg along with Dolachar (7 to 8% by weight) with GCV of 1000 kcal/kg ...
SIMPLIFIED BOILER START UP METHOD FOR FLUIDISED BED COMBUSTION BOILERS 1.0 SYNOPSIS The start up of fluidised bed combustion boilers has always been a subject of the most difficult operation. Many boiler users find it difficult to get their operators trained in the start up. The author shares his recent start up experience in a 70 TPH underbed Coal
Someone consult for AFBC boiler, while some search for CFBC boiler. And they are usually confused: are the two the same or what's the difference between AFBC and CFBC? ... SZS Gas & Oil Water Tube Boiler. WNS Oil & Gas Fire Tube Boiler. HOW TO CONTACT. E-mail zbgboiler@zzboiler. Tel 0086-371-86686767. Fax 0086-371-67838093. Skype ...
The important aspect of the design of a boiler is to select the material for the pressure parts of a boiler and to select the construction and mechanical design of the boiler. They are examined occasionally by the authorities of statutory for their safe working and set their own provisions and guidelines that rule the operation and design of ...
P roduct:: studded tubes, welded stud tubes,studded steel tubes,studded fin tubes: Application: Steel studded tubes are used instead of finned tubes for heat transfer in the petrochemical industry, generally in furnaces and boilers where the surface is exposed to a very corrosive environment and where very dirty gas streams require frequent or aggressive cleaning.
The bed evaporator tube helps reject the heat from the bed to maintain the temperature of the bed. ... afbc boiler velocity of flue gas | flue gas velocity in afbc boiler. The velocity of this fluidizing air can be in the range of 1.2 – 3.7 m/s in AFBC boiler.
I had come across the first failure in the year 1990 in 30 TPH AFBC boiler. The bed evaporator tubes failed in 4th compartment within six months after the boiler was commissioned. I happened to analyze the failure cause at that time. I had seen gross deviations in water chemistry. The alkalinity level was
Membrane type water wall with fin tubes provide gas tight enclosures for better efficiency of boiler & minimum refractory. Underbed as well as over bed firing system offered based on type of fuel used. Inbed tubes will be studded. 2 …
H Power Associates - Offering Fbc And Water Tube Boilers Carbon Steel Bed Coil Tubes With & Without Studs, For Boiler, Packaging Type: Metal Crate at Rs 7500/piece in Tiruchirappalli, Tamil Nadu. Also find Studded Bed Coil price list | ID: 6521527373
Almost all AFBC/ bubbling bed boilers use in-bed evaporator tubes in the bed of limestone, sand and fuel for extracting the heat from the bed to maintain the bed temperature. The bed depth is …
