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Nanjing Zoomlion Cement Co., Ltd.--- Ammonia-free denitration technology transformation

Customer Reviews：

Huijin Ammonia-free Denitration Kiln Tail Sintering System technology transformation was so successful with perfect ammonia water saving effect and reached all the contracted indicators target.”

Project Introduction：

Since Huijin Ammonia-free Denitration Kiln Tail Sintering System was used in Nanjing Zhonglian Cement Co., Ltd. 5000T/D production line, reducing the dosage of ammonia water from 0.8-1.0L/h to 0.7-0.8L/h, clinker 3-day strength was increased from 29MPa to 30MPa, and the NOx emission was reduced from 200mg/Nm³ to 80mg/Nm³. The remarkable technical reform effect was unanimously praised by clients!

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Technical parameter comparison table

Main parameters

Before transformation

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

14.5

14.3
Coal consumption at kiln tail（t/h)

16.0

15.9
Kiln feeding（t/h）

395

398
Secondary air temperature（℃）

1050±30

1080±20
Tertiary air temperature（℃）

950±30

980±20
C1 outlet temperature（℃）

300±5

300±5
Kiln tail temperature（℃)

＜1030

＜1030
NOx standard（mg/Nm³）

100

100
NOx actural emission（mg/Nm³）

200

80
Ammonia consumption（m³/h）

0.8—1.0

0.7—0.8
O2 emission（%）

10.0—12.0

10.0—12.0
Clinker KH value

0.90±0.02

0.90±0.02
Clinker 3 days strength（MPa）

29

30
Clinker 28 days strength（MPa）

58

58
Clinker standard coal（kg/t）

107

107

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.