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Diandong Cement Co., Ltd.---Ammonia-free denitration technology transformation

Customer Reviews：

Diandong Cement Group commented:“ Huijin ammonia-free denitration kiln tail sintering system transformation show us the workmanship qualified factory!”

Project Introduction：

Since Ammonia-free Dentration Kiln Tail Sintering System technology transformation was used in Diandong Cement Co., Ltd. , the ammonia consumption has been reduced from 18 tons/day to 3 tons/day, saving ammonia of 15.0 tons/day and estimated 2700 tons/year, the saving efficiency is about 80%, ammonia water alone saving is up to 2.05 million CNY (calculated based on 300 days a year), meanwhile the actual NOx emission is controlled within 400 mg/Nm³.

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Technical parameter comparison table

Technical parameters

Before transformation

After transformation
Coal consumption at kiln head（t/h）

6.3

5.9
Coal consumption at kiln tail（t/h)

9.5

9.5
Kiln feeding（t/h）

145

150
Secondary air temperature（℃）

1100

1150
Tertiary air temperature（℃）

950

980
C1 outlet temperature（℃）

370

360
Kiln tail temperature（℃）

980

980
NOx standard（mg/Nm³）

400

400
NOx actural emission（mg/Nm³）

<400

<400
Ammonia consumption（m³/h）

0.50

0.125
O2 emission（%）

12.5

12.5
Clinker KH value

0.90

0.90
Clinker 3 days strength（MPa）

33

33
Clinker 28 days strength（MPa）

---

---
Clinker standard coal（kg/t）

121

119

Project Introduction

Customer Reviews：

Huijin cement rotary kiln burner has perfect power-saving effect, the ammonia dosage is also significantly reduced.

Customer Reviews：

Huijin cement rotary kiln burner have stable and powerful flame, which indirectly prolong kiln lining service life, and with high flexibility adapt to low value pulverized coal.