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JRF series coal-fired hot-blast furnace
JRF series coal-fired hot blast furnace is the latest indirect heating technology that integrates combustion and heat exchange to exchange heat at high temperature parts of the furnace body. Smoke and air go their own way. The heating is absolutely pollution-free, with high thermal efficiency (up to 60-75%), fast heating, small size, convenient installation and reliable use.
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Details
 
 
 

Working principle
  The furnace integrates combustion and heat exchange. It is an indirect heating technology for heat exchange at the high temperature part of the furnace body. Smoke and air go their own way, and the heating is absolutely pollution-free,a.jpghigh thermal efficiency (up to 60-75%), fast temperature rise, small volume, convenient installation, reliable use, and low price (compared with one-ton boiler, the heating system is only half the price of the boiler heating system).
Performance characteristics
  High-temperature resistance measures have been taken to greatly prolong its service life compared with the tubular hot-blast stove, and the flue gas longitudinal scouring heat sink and negative pressure smoke exhaust method have been adopted. The heat exchange part is free of dust and does not need to be cleaned, and the thermal performance is stable. All kinds of coal or firewood can be used as fuel, and secondary air inlet device is equipped for complete combustion. The technical and economic indicators of the furnace have reached the domestic level.
Applicable materials
  The furnace is a universal hot air device, which is used together with drying equipment for various materials. It is used for heating and dehumidification of grain, seeds, feed, fruits, dehydrated vegetables, Xiangru, agaric, tremella, tea, tobacco and other agricultural products, food, pharmaceutical products, chemical raw materials, light and heavy industrial products, as well as heating of various facilities and dehumidification of warehouses.

Parameters
 
 
 
Name and modelJRF-15JRF-20JRF-30JRF-40JRF-60JRF-80JRF-100
Inner cylinder diameter76076011701170147016701870
Outer cylinder diameter1280128018401840220024602700
Total height3500350042604760481051105310
Total equipment3.15T3.65T6.8T7.5T9.8T11.7T13.5T
Hot air outlet diameter300300500500500600600
Hot air outlet height1585158516701670167017701770
Flue gas outlet diameter250250250250250300320
Flue gas outlet height2050205022202220222023852385
Model of ox horn elbowXZD/G Φ578XZD/G Φ810
Coal consumption per hour43kg57kg85kg115kg170kg230kg286kg
Combustion value of coal5000kcal/h
Thermal efficiency70-78%75-80%
Model of induced draft fanY5-47-3.15C
-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

Attention

◎ The environmental reference 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 according to the output air volume. The maximum hot air temperature of JRF4 type hot air stove can reach more than 200 ℃, and the maximum hot air temperature of JRF5 JRF6 type hot air stove can reach more than 300 ℃ (special manufacturing can reach more than 500 ℃). Users can adjust it according to needs.

◎ The configuration height of hot blast stove flue: 3~5 meters for JRF4, 5~8 meters for JRF and JRF6.

◎ See the installation diagram of hot blast furnace for the corresponding positions of the overall dimensions in the table.

◎ The refractory layer on the inner wall of the lower part of the furnace starts from the grate, and its height: JRF4-4 type is 0.5m, which can be installed on site.

◎ JRF6 is a chain grate combustion device.

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