Coking Waste Heat Recovery Boiler

Much exhausted gas generated in coking plant, in order to recover the gas with teh temperature 550~900℃, Zhongding Boiler has designed coking waste heat boilers based on the special characteristics of coking industry. This type of heat and smoke have the same characteristics as the flue gas carbon heat. Supplementary fired boiler with automatic oven gas burner for efficient combustion. Therefore, in addition to supplementary firing, all the waste heat boilers have the same or similar structure.

The new coking waste heat boiler, a highly efficient heat transfer, separation of functions furnace soot, and its new compact, low cost, small footprint and high efficiency, environmental protection, energy saving, the leading domestic level.

Rated Capacity:



< 3.8Mpa




Waste Heat

Boilers Structure

Coking Waste Heat Recovery Boiler

1. Heat transfer of exhaust gas and water/steam is proceed on surface, the outside of exhaust gas heat pipe is fin, so the heat transfer area increases, and the heat transfer coefficient increases.

2. The temperature of tube wall can be adjusted by adjust the ratio of hot and cold surface on heat pipe. Increases the temperature and let it higher than the dew point temperature or maximum corrosion area, which can prevent corrosion, extend the life

3. During operation, due to a large amount of exhaust gas scour, it will not cause the air and water from the cold side to leak to the hot side, ensuring the safe operation of the system.

4. In general, when waste heat recovery equipment is added, the resistance of hot exhaust gas increases at about 1500Pa. The damage of one or more heat pipes does not affect the overall use of the equipment.

Auxiliary equipment



Carbon steel material, the diameter is bigger than common manufacturers, exhaust gas temperature is lower than others.



Use air pulse shock wave soot blower for ash removal, significantly effective, simple operation, high degree of automation.



Take use of high quality deaerator, remove oxygen from water and prevent boiler oxygen corrosion.



We adopts the stainless vertical pump with low noise, stainless impeller and pump body.

Steam header

Steam header

Standard configuration: one inlet, three outlets, equipped with pressure gauge and thermometer. It can be designed according to customers' requirement.

Water softener

Water softener

It is fully automatic and free debugging. We adopts PE material for salt tank body, it has hard texture and it is easy to move, anti-shock, and no leakage.


Zhongding Boiler pay more attention to the boiler quality from raw material to producing process.

boiler quality
we choose domestic well-known manufacturer who can provide component report of raw material, to ensure the raw material is qualified. After the completion of raw material procurement, there are specialized technicians in our factory to make sampling chemical composition analysis and physical performance analysis, and we can also provide raw materials inspection report.
We adopt numerical control cutting, which has the advantage of high precision, neat cutting surface, nice appearance and high material utilization.
Boiler manufacturing
Boiler production
We adopt submerged arc fully automatic welding. When each welding process is done, the 100% X-ray inspection will be arranged for every welding seam, which can prevent the defective parts from flowing into the next process.


Model Rated Evaporation Capacity (t/h) Rated Pressure (MPa) Steam Temperature (℃) Feed Water Temperature (℃)
QC170/650-35-3.82/450 35 3.82 450 104
Q90/950-35-3.82/450 35 3.82 450 105
BQ36/650-35-3.82/450 35 3.82 450 104
BQ60/800-35-3.82/450 35 3.82 450 150
Q158.7/700-35-3.82/450 35 3.82 450 104
Note: Zhongding Boiler could customize design the waste heat recovery boiler based on the actual demand


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