Commissioned: June 2018
Annual coke production: 600,000 t/y
Coal gas production: 15,000 Nm³/h
H₂S content: 7–8 g/Nm³
Commissioned: December 2020
Annual coke production: 2,000,000 t/y
Coal gas production: 105,000 Nm³/h
H₂S content: 6.0 g/Nm³
Biogas Section Features: High H₂S concentration, low gas flow rate.
The process uses one-stage bubble spray tower + one-stage spray tower.
Aerobic Tank Waste Gas Features: Low H₂S concentration, high gas flow rate.
Two-stage spray towers in series are adopted.
The unit is currently under construction.
Before adopting our chelated iron catalyst, the plant had tested PDS catalysts from several suppliers.
Due to the frequent use of high‑sulfur coal in coking operations, the H₂S content after the scrubber tower could not be stably controlled within 100 mg/Nm³.
To resolve this issue, after detailed evaluation and comparison, the plant selected our chelated iron catalyst for its higher H₂S removal efficiency, while also effectively addressing waste liquid disposal problems.
Prior to using our products, the plant adopted chelated iron catalyst from another domestic supplier.
After only less than 2 months of operation, the system began to suffer serious issues including blackening of solution, excessive foaming, substantial H₂S breakthrough exceeding limits, and a sharp increase in pressure drop across the desulfurization tower, which severely disrupted normal production.
Commissioned: October 2020
Annual coke production: 1,200,000 t/y
Coal gas production: 62,400 Nm³/h
H₂S content: 3.0–5.5 g/Nm³
Commissioned: June 20, 2020
Annual coke production: 1,200,000 t/y
Coal gas production: 65,000 Nm³/h
Inlet H₂S content: 4.0–7.0 g/Nm³
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