Waste heat boiler is a boiler that uses sensible heat in waste gas, waste or liquid waste in various industrial processes or (and) heat generated after combustion of combustible materials. Or in the fuel (or gas) combined cycle unit, the boiler uses the heat of high-temperature flue gas discharged from the gas turbine.

At present, in the smelting and industrial kiln industries, the application of waste heat boiler has been very popular. The structural forms of waste heat boiler are mainly discrete and horizontal. The different structural forms of waste heat boiler bring different user experience. So, how should we choose the structure of waste heat boiler?

  Horizontal waste heat boiler The area is large, which brings huge costs to the civil work in the early stage of boiler construction. At the same time, the horizontal space of the boiler occupies a relatively large area of the factory building, which has caused a lot of investment in the industrial land. For horizontal boilers, the flue gas enters and exits horizontally, and the flue gas resistance is greatly increased, which also causes considerable cost increase when selecting fans. The horizontal boiler is convenient for maintenance, and there is no aerial work.

Horizontal waste heat boiler It is composed of drum, movable hood, flue at furnace mouth section, flue at inclined section 1, flue at inclined section 2, flue at last section 1, flue at last section 2, feeding pipe (blanking chute) groove, oxygen lance mouth, nitrogen sealing device and nitrogen sealing plug, manhole, micro differential pressure tapping device, support and hanger of flue, etc. The waste heat boiler is divided into six circulation loops. Each circulation loop is composed of downcomer and riser. The feed water of each section of flue is introduced from the drum through downcomer to the lower header of each flue, and then enters into each heating surface. The water passes through the heating surface and generates steam into the header, and then is introduced into the drum through the riser. All flues are connected by flanges.

The vertical waste heat boiler occupies a small area, greatly reducing the civil construction cost, and the horizontal space occupied by the plant is small, but the height is limited. It is basically located outside the plant. The vertical boiler flue mostly goes in and out from top to bottom. On the one hand, the flue position at the outlet of the smelting furnace is reasonably used. On the other hand, the waste heat boiler feed water goes in and out from bottom to top, realizing the reverse heat exchange of the waste heat boiler and greatly increasing the heat exchange efficiency of the waste heat boiler. In fact, the choice of vertical or horizontal waste heat boiler depends on the local limits set by the manufacturer. If you have any questions, please consult us Waste heat boiler manufacturer 。