WRFL Horizontal Coal fired Hot Air Boiler

The hot blast stove is a new generation heating product jointly developed and designed by our company and China Shipbuilding Heavy Industry Corporation. The product adopts multi head spiral groove heat exchange technology, integrating combustion and heat exchange design, making the product compact in structure, reasonable in layout, high in heat exchange intensity, fast in heating up, and high in thermal efficiency. It has the characteristics of small footprint, easy installation and operation, clean hot air, and stable performance. This hot air stove utilizes indirect heat transfer technology, using clean air as the heat transfer medium, to provide an ideal direct heat source for heating processes in various industries. The heating temperature is divided into three levels: low temperature (80~150 ℃), medium temperature (200~300 ℃), high temperature (400~550 ℃), and customers can freely choose according to the requirements of the drying process. This product is widely used for drying, spraying, and dehydrating various materials such as chemicals, food, medicinal herbs, tobacco, ceramics, and building materials. It can also be used for heating in buildings such as factories, auditoriums, sheds, and livestock houses, as well as for dehumidification or heating processes in underground mining areas, underground engineering, and other places.
2、 Working principle and main equipment performance characteristics
1. Working principle: The combustion chamber and heat exchanger of this hot blast stove are integrated, adopting a multi-layer sleeve structure made of all steel plates. The lower part of the furnace core is the combustion chamber, and the upper and surrounding parts are circular heat exchangers. Both air and flue gas are double return, and heat exchange is carried out in their respective paths. In order to improve thermal efficiency, multi head spiral groove heat transfer technology and turbulent flow principle are adopted to reduce the thickness of laminar flow, so that air and flue gas continuously exchange directions during movement, greatly enhancing the heat transfer effect.
Main working process: Coal combustion generates high-temperature flue gas in the furnace, which enters the smoke ring under the action of the fan, exchanges heat with the outside air, and is discharged from the chimney through the flue. Cold air is blown into the outer shell of the hot blast stove by the blower, flows into the air ring outside the furnace through the top, and is supplied to equipment that needs clean hot air through the hot air outlet pipe.
2. Main equipment: The hot blast stove is mainly composed of grate, refractory bricks, reflector plate, hot blast stove body, flue and inlet duct, dust collector, chimney and its support, induced draft fan (including regulating valve), blower (including regulating valve), and dedicated temperature measuring instrument.
3. Performance characteristics: a. Using coal as fuel. b、 Using clean hot air as the drying medium, pollution-free. c、 Low energy consumption and high thermal efficiency. d、 Automatic temperature measurement and display. e、 Easy to operate, convenient to use, all supporting equipment is domestically produced, and its performance indicators have reached the national advanced water quality level. If Class II and III bituminous coal is used as fuel, its sulfur content should be less than 1%, and impurities such as wooden blocks, stones, and metal parts should not be mixed into the coal. Large pieces of coal should be crushed.