Karan Boilers Ambala City, Haryana

A water-tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Water-tube boilers are generally used for high-pressure boilers. Fuel is burned inside the furnace, creating hot gas which heats up water in the steam-generating tubes. In smaller boilers, additional generating tubes are separate in the furnace, while larger utility boilers rely on the water-filled tubes that make up the walls of the furnace to generate steam. The heated water then rises into the steam drum. Here, saturated steam is drawn off the top of the drum. In some services, the steam will reenter the furnace in through a superheater in order to become superheated. Superheated steam is used in driving turbines. Since water droplets can severely damage turbine blades, steam is superheated in order to ensure that there is no water entrained in the steam. Cool water at the bottom of the steam drum returns to the feedwater drum via large-bore 'downcomer tubes', where it helps pre-heat the feedwater supply. The feedwater is supplied to the steam drum and the downcomers supply water to the bottom of the waterwalls. To increase the economy of the boiler, the exhaust gases are also used to pre-heat the air blown into the furnace and warm the feedwater supply. Water tube boiler is sub-classified as –1. Bi-drum Boiler ( It has two drums )2. Single drum Boiler ( It has only one drum )

For industrial companies using a boiler for its facility, some type of boiler feed water treatment system is usually necessary to ensure an efficient process and quality steam generation. All fresh and raw water sources contain some amount of impurities in the form of suspended and dissolved gases and matter. The level of impurities varies depending upon the source. These impurities become a critical factor when the water is used for generating steam. Today, in all the industrial setups, higher-pressure boilers are used which require pretreated water as their input in order for them to function smoothly and efficiently. Presence of water treatment systems is a must in such setups. The water supplied to the boiler or the feed water as it is called has to be pretreated for removal of impurities as that helps to avoid carryover, corrosion and deposition in the boiler system. And it help the facility to avoid expensive maintenance fees, and boiler failure as a result of scaling, corrosion, and fouling of the boiler and downstream equipment.

This is a unique design membrane water wall type boiler combining the advantages of water tube & smoke tube designs. The radiation zone of the furnace is covered on three sides by water tubes forming the first pass and the conventional smoke tube shell has tubes lined up forming the second and third pass of flue gases. Thus the water wall furnace recovers the radiation heat of the furnace and the smoke tube shell provides large water & steam holding capacities to give maximum advantage. This design can burn a variety of fuels like Coal, Lignite, Rice Husk, Wood, Bagasse, Groundnut shells, and several other fuels thus providing you with lowest energy costs depending upon the fuel availability in your area. Advantages Flexibility of fuels with choice of agro-waste fuels.M Combines the advantage of water tube and smoke tube designs. High thermal efficiency and low operating costs. Dependable quality of components like valves, pumps, safeties & instruments. Can be converted to liquid / gaseous fuels as well. Heat recovery unit may be offered for increased efficiency. Easy access for cleaning and inspection.

A large program of Efficient & Rugged Steam Boilers with Agro-waste , Coal, Oil & Gas Firing with optimum Fuel Economy are available in 3-pass design. Horizontal packaged boiler. Qualified, long life, safe steam boilers complying with standards. Evaporation, Capacities, pressure and temperature as per customer’s requirement. Highly fuel efficient due to 3-pass fully wet-back construction. Optimum utilization of burner features and a well designed combustion chamber helps in minimized NOx emissions. Integral furnace-minimum heat loss. Stable and dry steam production. Large steam space. Simple to operate and to maintain. Easy access for inspection and cleaning.

The traditional source of heat in industry, has been steam. However, higher temperatures of steam require higher investment in the heat generation. Water boils when it’s vapoUr pressure equals the atmospheric pressure. Thus, when pressurized, water can boil at temperatures above 100 °C. The hot water generator uses this principle to heat water as high as 140 °C or beyond without changing its liquid state. This water is transferred in a pressurized closed loop system to the point of application. Features High quality high temperature seamless tubes/coils 3-pass thermally efficient heater Efficient combustion system Fully automatic control system All safety instruments and controls are provided Very compact and occupies minimum floor area