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RFL series hot blast stove
technical specifications
Product details

Working principle
This furnace integrates combustion and heat exchange through indirect heating technology at the high-temperature part of the furnace body. Smoke and air flow separately, and heating does not pollute the hot air. It has high thermal efficiency (up to 60-75%), fast heating, small size, easy installation, reliable use, and low price.
Performance characteristics
High temperature resistance measures have been taken, greatly extending its lifespan compared to tube type hot air stoves. Longitudinal flushing of heat dissipation fins by flue gas and negative pressure exhaust methods have been adopted, ensuring that the heat exchange area does not accumulate dust and does not require cleaning, resulting in stable thermal performance. Various types of coal or wood can be used as fuel, and equipped with a secondary air inlet device for complete combustion.
Adapt to materials
This furnace is a universal hot air device that is used in conjunction with drying equipment for various materials. Widely used for heating and dehumidification of agricultural products such as grains, seeds, feed, fruits, dehydrated vegetables, fragrant mushrooms, fungus, Tremella fuciformis, tea, tobacco leaves, food, pharmaceuticals, chemical raw materials, and light and heavy industrial products. It can also be used for heating various facilities and dehumidification in warehouses.

technical specifications

Name \ \ Model

RFL-15

RFL-20

RFL-30

RFL-40

RFL-60

RFL-80

RFL-100

Inner cylinder diameter

760

760

1170

1170

1470

1670

1870

Outer cylinder diameter

1280

1280

1840

1840

2200

2460

2700

Height

3500

3500

4260

4760

4810

5110

5310

Total equipment quantity

3.15T

3.65T

6.8T

7.5T

9.8T

11.7T

13.5T

Diameter of hot air outlet

300

300

500

500

500

600

600

Height of hot air outlet

1585

1585

1670

1670

1670

1770

1770

Diameter of flue gas outlet

250

250

250

250

250

300

320

Smoke outlet height

2050

2050

2220

2220

2220

2385

2385

Hourly coal consumption

43kg

57kg

85kg

115kg

170kg

230kg

286kg

The combustion value of coal

5000kcal/h

thermal efficiency

70-78%

75-80%

Model of smoke exhaust fan

Y5-47-3.15C
-1.5KW

Y5-47-4C
-2.2KW

Y5-47-4C
-3KW

Y5-47-4C
-4KW

Y5-47-5C
-7.5KW

Y5-47-5C
-7.5KW

Warning Attention
1. The environmental benchmark temperature standard is 18 ℃± 2 ℃, and the calorific value of coal is calculated at 5000Kcal/kg.
The hot air temperature in the table is determined based on the output air volume. The hot air temperature of the RFL40 type hot air stove can reach up to 200 ℃ or above, and the hot air temperature of the RFL60 type can reach up to 300 ℃ or above (for special manufacturing, it can reach 500 ℃ or above). Users can adjust it according to their needs.

3. The height of the smoke window configuration for the hot blast stove is 3-5 meters for the RFL40 type, 5-8 meters for the RFL50 and RFL60 types.
4. The corresponding positions of the external dimensions in the table are shown in the installation diagram of the hot air stove.
5. The refractory layer on the inner wall of the lower part of the furnace starts from the grate and has a height of 0.5 meters for EFL40 type, which can be installed on site.
6. RFL60 and above are chain grate combustion devices.

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