WNS series condensing fuel (gas) steam boiler performance characteristics of three wet back boiler return structure, smoke tube arranged symmetrically, distributed uniformly, to improve the stress distribution tubesheet. Wet-back of the combustion chamber structure completely immersed in water, the cooling conditions, the tube plate from high temperature flue gas erosion, and long service life. Condensing WNS series of fuel (gas) steam boiler performance characteristics: 1, WNS series of fuel gas steam condensing wet back boiler three pass structure, smoke tube arranged symmetrically, distributed uniformly, to improve the stress distribution tubesheet. Wet-back of the combustion chamber structure completely immersed in water, the cooling conditions, the tube plate from high temperature flue gas erosion, and long service life. 2, corrugated furnace applications both increased heating surface and ease of expansion and contraction may damage the combustion chamber to improve the strength. 3, before and after the smoke box with hinged connections, easy to open access. 4, the large vapor space of the steam from the water velocity is low, and the built-water separation apparatus, a high quality steam to ensure stable output. 5, using the threaded pipe, the effect of enhancing heat transfer, thermal efficiency is improved. 6, the application of advanced digital control technology, remote monitoring of the combustion process. High degree of automation, all kinds of perfect protection, water pressure to achieve automatic control. 7, smoke vents may be additional condensing heat exchanger, sensible heat and latent heat to reduce the temperature of flue gas in flue gas, the boiler efficiency (over 95%).

The basic structural characteristics of water-tube boiler shell and the difference between the boiler and the boiler in the form of a shell and the difference between the characteristics of boiler water tube boilers and shell type boilers are presented in the form of double-layer structure. Referred to as outer tube boiler shell, called the inner furnace tube piece (fire tube), a circular space between the inner cylinder and the outer cylinder is filled with water, and the inner cylinder combustion chamber. When pressure medium is steam, the boiler shell is in the depressed state, the furnace is under an external pressure. Shell boilers and vertical and horizontal type. Currently used fuel in the boiler combustion gas boiler horizontal Boiler shell. Shell boilers have the following common characteristics: 1, the pot of water and stoves are installed inside the shell. 2, the metal furnace (hearth) small size, surrounded by a water-cooled, water-cooled degree of difference, a difference of combustion conditions, must be high-quality fuel combustion; 3, the heat receiving area is reduced, evaporation, or thermal power will be relatively reduced, which requires installation of water pipes or tubes pyrotechnics, and to increase the capacity of the boiler heating surface; 4, the diameter of the pot shell shell, more open, irregular shape, and unheated portions of the internal heating, the temperature and the degree of thermal expansion are different, the housing for the poor safety; water tube boiler is a boiler wherein the mixture of water, soda water or steam flowing in the pipe, and the combustion flame or flue gas flow in the outer conduit. An industrial boiler, and the heating surface of the combustion chamber which is located outside the boiler tubes, and water vapor flow through the pipe. In one aspect, the boiler water tubes in the furnace wall a plurality (water wall), having a large radiation evaporator heating surface; the other hand, the convection heating surface is evaporated is also provided outside the furnace tube bundle, the tube bundle is connected to 1 to 3. Thus, the heating area is increased, the evaporation increases greatly. The present invention also has a low consumption of metal, the structure of good elasticity, heat transfer capability, high thermal efficiency, easily improved steam parameters to achieve mechanization and automation of advantages.

Fangkuai Group has more than 60 independent intellectual property rights, advanced clean fuel boiler manufacturing technology, and jointly established a clean fuel boiler production, research and research cooperation base with Tsinghua University and Xi'an Jiaotong University. An enterprise with a R & D and test center for clean fuel boilers. The thermal efficiency of “Fangkuai” boilers can reach 107%, which has been included in the national special equipment energy-saving catalog. The company developed ultra-low nitrogen full premixed combustion condensing boilers and ultra low nitrogen emission fuel gas boilers, which are developed by the company using Ultran condensation technology.

The significance of boiler blowdown:

(1) An important part of the water treatment work during boiler blowdown is an important means to ensure that the boiler water quality meets the standard requirements.