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The technical indicators of the equipment have reached the advanced level in China. Widely used in industries such as chemical, grain, mineral products, food, and building materials. It can be used as an ideal heat source for heating, drying, baking, and heat setting, and can be used in conjunction with various drying equipment.

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The equipment outputs clean hot air without any pollution to the dried products. The heat exchange air and flue gas flow separately, with flue gas flowing outside the pipe and air flowing inside the pipe,The countercurrent heat transfer method enhances heat transfer.

- High heating temperature and wide heating range:Heating temperature range from50℃ to550℃, heating capacity from60 Ten thousand large cards arrive2000 Wan Daka,Continuous and stable supply of hot air,Temperature stability ±5℃.

- Easy and convenient operation: high degree of mechanical automation, easy operation, low labor intensity for workers, convenient temperature regulation, and low operating costs.

Wide fuel adaptability: Suitable for various forms and calorific values of fuel, with sufficient combustion

High thermal efficiency and low dust concentration in flue gas emissions.

- Safety and environmental protection: There is no black smoke in the exhaust, and the dust emissions meet the national second-class environmental protection standards. The operating environment is relatively clean; Users can also choose to use dry or wet desulfurization and dust removal methods according to local environmental protection requirements to meet environmental protection requirements. The equipment is safe and reliable with no explosion or other hazards during use.

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Widely applicable for drying heating in industries such as pharmaceuticals, food, chemicals, grains, and building materials.

Structural features:

1. Adopting a chain grate form: overcomes the disadvantages of black smoke and poor heating caused by intermittent coal addition in a fixed grate, as well as incomplete combustion caused by delayed ignition and slag removal.

2. Adopting a separate structure: the furnace body and heat exchanger are arranged in separate chambers, effectively protecting the heat exchanger. It has the advantages of flexible arrangement, stable performance, easy maintenance, and long service life.

3. Smoke settling and combustion treatment of combustible gas fine powder: Setting up a settling chamber mechanism can fully burn the gas and carbon fine powder in coal, improve combustion efficiency, effectively reduce the dust content entering the heat exchanger, reduce wear and dust accumulation of the heat exchanger, control the local high-temperature burning of combustible fine powder, and improve the service life and thermal efficiency of the heat exchanger.

4. Flue gas recirculation technology: The main factor affecting the service life of the hot blast stove is high-temperature burning. Scientific use of flue gas recirculation technology guides the exhaust flue gas back to the combustion mixing chamber. By controlling the mixing ratio, on the one hand, it ensures the allowable temperature for long-term operation of the heat exchanger, and on the other hand, it reduces the working temperature of the furnace, reduces the phenomenon of slag hanging on the top of the furnace, and effectively improves the service life of the hot blast stove.

5. High temperature jet heat exchanger: adopting the internationally advanced gas air heat exchange structure in the metallurgical industry, the heat exchange tube consists of an outer tube and a jet inner tube. The high-speed airflow from the jet inner tube impacts the curved inner wall of the heat exchange outer tube, breaking the air diaphragm layer and greatly increasing the heat transfer coefficient of the inner wall (up to 70W/m2. ℃), quickly taking away the heat from the outer tube, reducing the average operating temperature of the heat exchange tube, and improving the service life of the heat exchanger. By selecting and arranging different materials, the heating temperature can reach 550 ℃.

6. Medium low temperature heat exchanger: Spiral inserts are used inside the heat exchange tubes to allow air to swirl at high speed inside the tubes, reducing the thermal resistance of the boundary gas film and effectively improving the heat transfer coefficient of the heat exchanger.

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Note: 1. Temperature higher than250At ℃, please specify when placing an order.2The combustion value of coal is determined by5500kcal/kgcalculation.

3Please provide the equipment layout diagram for reference.

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The JRF-B series high-temperature coal-fired hot blast stove consists of a mechanical chain grate coal-fired machine and high, medium, and low temperature heat exchangers. Raw coal fuel is poured into the feeding hopper of the coal-fired machine through an automatic coal feeder, and the coal seams with adjustable height according to the type of coal are uniformly fed by a chain grateEntering the combustion chamber, the combustion air is discharged from the coal combustion furnace through the coal seam by a fan to assist in coal combustion. burnThe high-temperature flue gas generated by burning, after passing through the combustion chamber and preliminary dust reduction in the flue gas settling chamber, enters the air heat exchanger,Smoke fromchangeCirculating inside the heat exchanger tube, cleanAir flows outside the pipeThus, clean air is exchanged with high temperature through heat exchange tubesSmoke generates heat exchange, thereby heating clean airThe temperature of high-temperature flue gas is reduced. After the heated clean air reaches the temperature, it is directly sent into the dryer (or other heating equipment) by the blower. After the cooled flue gas reaches a temperature of 160-180 degrees, it is subjected to secondary dust removal by a cyclone, and then passes through a water film desulfurization device to become environmentally friendly exhaust gas, which is discharged by the flue gas induced draft fan.

Optional configuration:

- Equipment combination form structure: Customers can choose between horizontal and vertical equipment combination layout according to the site conditions. Please refer to the equipment structure layout diagram.

- Output temperature and heat exchanger structure material: The corresponding heat exchanger structure and material should be selected according to the high or low output temperature to obtain the best cost-effectiveness. The main structures of heat exchangers include: high-temperature jet heat exchangers, plug-in heat exchangers, plate heat exchangers

Tube heat exchangers, heat pipes, etc., made of materials such as ordinary carbon steel, boiler steel, and various other materials

Stainless steel, aluminum infiltrated alloys, etc. with the same temperature resistance level.

Structural diagram: