2. Circulating fluidized bed boiler is radically different from other boilers on the burning system. Its burning system consists of burning room, material destination and material returner. The high heat material enters the material returner together with the airflow, and the material collected will enter the material returner and then returns the burning room. This is called circulating burning which increase the burning efficiency greatly.
3. This boiler is with a wide range and high speed of load adjustment.
4. A clean and environmental burning technology is used in this boiler to improve the quality of air and environment.
5. It is easier to use the ash completely because of the low-heat burning and good burning condition of this boiler.
6. There is no immersed tube in the boiler, so it is easy to start or stop the equipment
The production includes Thermex hot-water and steam boilers. These boilers are made to the highest quality standards and are robust featuring an efficiency of up to 95 %. By integrating a recuperator, the boiler efficiency is additionally enhanced. The tangential input of exhaust gases into the exhaust pipes results in vortex movements by the exhaust gases without the need to use turbulators. Consequentially, the cleaning of the boiler is considerably easier and more cost effective since the turbulators do not need to be dismantled and cleaned.
General overhaul of hot-water and steam boilers by the following manufacturers TVT-TAM-STADLER, EMO Celje, Ðuro Ðakoviè, Weiss-Toplota, Kohlbach, Loos, Viessmann, Omnical, TPK.
Boiler overhauls have several advantages compared to acquiring new ones:
* During the overhaul all vital components of boilers are replaced (exhaust pipes, duct walls, combustion chamber... ) making them as new from the aspect of their performance, efficiency and lifetime;
* Price of the overhaul does not exceed 50 % of the purchase price of a new boiler;
* The services provided carry a three-year warranty;
* Boiler overhauls are performed on site which is important for boiler rooms difficult to access. This makes construction as well as installation works unnecessary, there is also no need for lifts and permit application or any other additional administrative procedure.
The boiler is a three-pass, fire-tube steam boiler made by Finnish Ahlström Themoflow in year 1990. The boiler has max operating pressure16 bar with 205 C steam temperature and it is equipped with exhaust gas economizer for preheating incoming feed-water and modulating heavy fuel oil burner. It's has a large 15.2 m3 water volume which allows big momentary changes in load. Other benefits include simple structure, long operating life, reliability and ease of service and maintenance. The boiler is in good operational condition. Feed water pumps and feed water tank with aerator are available for separate request and price.
Technical Data:
Manufacturer: Ahlström Thermoflow, Kaarina
Manufacturing year: 1990
Capacity: 3.3 MW
Water volume: 15.2 m3
Steam characteristics: Max 16 bar, at 205 C temperature, saturated
Oil Burner: Weishaupt Monarch RMS 50/2 A - ZM (YOC 1990)
Oil feeding: 140 - 490 kg/h.
Very little operated (ony 6000 hours totally!) fuel oil fired package boiler made by Högfors (nowadays Foster Wheeler) in 1988. Complete plant with combustion air fan and feed water pumps for immediate delivery, in very good condition.
Main scope of the delivery:
- Högfors 30 t/h boiler
- Oilon burner
- Economizer
- Combustion air fan
- 2 pcs of 90 kW / 25 bar KSB feed water pumps
- Fuel oil pumping unit made by Oilon
- 8 pcs of steam shoot blowers
- valves, fittings and maintenance supports .
Type of boiler Water tube type with natural circulation, with two drums
Manufacturer Kymin Osakeyhtiö, Högfors, Finland (Foster Wheeler)
Model of the boiler: H52-47-25 bar
Year of manufacturing 1980
Starting day of operation 16.11.1980
Evaporation 47 t/h saturated steam
Temperature of steam 226 oC
Effect 30 MW
Structural pressure 25 bar
Feed water temperature 120 oC
Furnace volume 74,5 m3
Surface of furnace c. 136 m2
Surface of convection part 420 m2
Surface of economizer c. 504 m2
Water volume 15,8 m3
Oil Heavy oil (POR 230)
Oil burner Saacke SKV, fully automatic, modulating
Regulating area of burner 610-3050 kg/h
Oil pumping- and pre- Oilon Osva 4000 kg/h
heating station
Feed water pumps 2 pcs + 1 pc as spare.
KSB-centrifugal pump MOVI 65/6,
massflow 59 t/h, 29,5 bar
motor 90 kW, 2900 r/min
Primary air fan Mercantile KDER 75, 37300 Nm3/h, motor 115 kW, 1500 r/min
Sootblowers Diamond Superior sootblowers 4 pcs in boiler part
Diamond Superior sootblowers 4 pcs in economizer.
Dimensions of boiler part: Height 5,2 m, Width c. 4,5 m, Length 10,0 m
Weight of boiler part c. 54 t. without water and accessories
Weight of economizer c. 15 t. without water and accessories
Boiler is suitable for gas operation by changing the burner.
The boiler has been in operation only about 6.000 hours.
Equipment for SaleGeneral Industry Textile Machinery Process Equipment Energy & Power
Gas & HFO Boilers Wind Turbines.
Steam boilers:
1.Advanced burner and the plc, long-distance control, protect auto, auto feed water, auto control pressure. Feul range: diesel oil, heavy oil, nature gas, city gas, dual fuel options.
2.Rated evaporation:500kgs-30000kgs, pressure 7- 25bar
3.Compact structure.Logical design.Highly effective
4.Safe burning condition, low gas blacness
5.Save investment.Easy installation and moving
6.Power oil conserving.24 hours working life.Low noise
7.We can made all kinds of boiler based inquire
8.Large water volumes and steam space combine and production of dry steam under normal operating conditions
Brief Introduction of the CFB Boiler
The circulating fluidized bed boiler is a high pressure, single drum, steel structure and natural circulation boiler. The arrangement for the integrated boiler is adopted. Rectangular section of the combustion is adopted for the boiler. The membrane wall construction is arranged for the four sides walls of the furnace and enclosure of the rear pass. Water-cooled platen and secondary super-heater are arranged in the furnace while abrasion resistant refractory is lined in the emulsion zone at the lower part of the furnace to protect the furnace from erosion in operation. The super-heaters are divided into SH1, SH2 and SH3. Convection super-heater, economizer and horizontal tubular air pre-heater with primary and secondary airflow separators are arranged in the rear pass in sequence.
Two hot or steam-cooling cyclones with U type loop seal is arranged between the furnace and rear pass of the boiler. The cyclones are lined with refractory to assure reliable operation. Anti-explosion buck-stay and expansion center with non-metal expansion joint are arranged for the boiler to solve the tri-direction expansion problem.
Technical Features of the Boiler
* The design of the advanced water-cooled grid with even distributed air, large bell type nozzle, reasonable resistance and no blocking makes the boiler long service life ;
* Large width-to-depth ratio of the furnace to facilitate the secondary air passing through and being mixed ;
* High efficiency heat insulation cyclone separator is adopted ;
* Stable and reliable operation and high efficiency insulated or air-cooled cyclone ;
* Self equilibrating U type loop seal for returning the circulating material to make the control simple and reliable ;
* Three stage super-heater arrangement with the secondary super-heater in the furnace to improve the radiant characteristic of the super-heater efficiency ;
* Spray type de-super-heating is adopted to get fast de-super-heating reliably and safely ;
* Tubular air pre-heater with the primary and secondary air separate arrangement.
Inhibitors function in Cooling Towers, Evaporative condensers, Stem Boilers and hot water Boilers.
-By adsorption as a thin film on to surface of acorroding materials.
-By inducing formation of a thick corrosion product.
-By changing characteristics of the environment either by producing protective precipitates or removing or inactivating an aggressive constituent so that it dose not corrode the materials.
