Audited Supplier
Industrial drying oven, drying furnace with indirect heat exchanger
1. Introduction for Gas Fired Hot Air Furnace
The direct fired furnace is a style of heater in which a burner provides hot gasses that transfers their heat energy for drying final products. It's customized designed and manufactured according to customer's detailed requirements.
Oil, natural gas and other fuel can combust to produce high temperature clean flue gas through oil or gas burner, and the flue gas can provide the hot air to the drying system directly as heat source or heating the air with the heat exchanger as heat source.
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2. Working principles
When the fuel is burned in firebox,high temperature smoke gas is produced. Those smoke gas is sent byhot air furnace which has strong exchange heating function to dried air. After quantity of heat is emanated,hot fueling gas temperature is decreased to 250°C and those gas are exhausted by fan. Fresh air is sent to hot air furnace by selected blow fan machine. After absorbed heating energy, when air temperature reaches to specific degree, it is sent to outlet of hot air,while hot air temperature meet the highest limited point,the burner will stop burning automatically or turn to small fire burning, when hot air temperature decreases to the lowest preseted degree, burner start running again, the speed of heating can be adjusted by air inlet valve.
3. Technical Parameters
| Type | Gas Consumption (Nm³/h) | Oil Consumption (kg/h) | Rated Heating Load (×104kcal/h) | Supporting Power (kw) | Dimensions (L×W×H mm) |
| LRQ(LRY)-Z50 | 52.5-62.5 | 44-54(47-57) | 50 | 1.1 | 2500×900×1000 |
| LRQ(LRY)-Z75 | 82.2-92.2 | 68.5-78.5(71.5-81.5) | 75 | 1.5 | 2500×1000×1100 |
| LRQ(LRY)-Z100 | 111.3-121.3 | 93-103(97-107) | 100 | 1.5 | 3000×1100×1200 |
| LRQ(LRY)-Z150 | 169.4-179.4 | 142-152(148-158) | 150 | 7.5 | 3000×1200×1250 |
| LRQ(LRY)-Z200 | 227.6-237.6 | 191-201(199-209) | 200 | 7.5 | 4000×1500×1800 |
| LRQ(LRY)-Z250 | 285.7-295.7 | 240.1-250.1(250.1-260.0) | 250 | 7.5 | 4200×1800×1900 |
| LRQ(LRY)-Z300 | 343.8-353.8 | 290-300(301.1-311.1) | 300 | 15.0 | 5500×2000×2000 |
| LRQ(LRY)-Z350 | 402-412 | 338-348(352-362) | 350 | 15.0 | 5800×2100×2200 |
| LRQ(LRY)-Z400 | 460-470 | 387-397(403-413) | 400 | 22 | 6100×2200×2300 |
| LRQ(LRY)-Z500 | 576-586 | 485-495(505-515) | 500 | 22 | 6500×2300×2500 |
4.Advantages for Gas Fired Hot Air Furnace
| 1. High thermal efficiency>95%, less auxiliary equipment, Low investment cost and good operation environment. |
| 2. Adopting the advanced reinforced heat exchange technology and heat resistant steel, compact structure. |
| 3. Long service life, work stable, safe and reliable. |
| 4. The flue gas temperature can be easily adjusted from 120ºC to 850ºC. |
| 5. The combustion process is auto-controlled and easy to adjust. |
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