This paper overviews the development of the anthraquinone auto-oxidation (AO) process for the production of hydrogen peroxide in China and abroad. The characteristics and differences between the fixed-bed and fluidized-bed reactors for the AO process are presented. The detailed comparison indicates that the production of hydrogen peroxide with the fluidized-bed reactor has many advantages, such as lower operation cost and catalyst consumption, less anthraquinone degradation, higher catalyst utilization efficiency, and higher hydrogenation efficiency. The key characters of the production technology of hydrogen peroxide based on the fluidized-bed reactor developed by the Research Institute of Petroleum Processing, Sinopec are also disclosed. It is apparent that substituting the fluidized-bed reactor for the fixed-bed reactor is a major direction of breakthrough for the production technology of hydrogen peroxide in China.
. [J]. Frontiers of Chemical Science and Engineering, 2018, 12(1): 124-131.
Hongbo Li, Bo Zheng, Zhiyong Pan, Baoning Zong, Minghua Qiao. Advances in the slurry reactor technology of the anthraquinone process for H2O2 production. Front. Chem. Sci. Eng., 2018, 12(1): 124-131.
Complicated; carefully designed mechanical stirrer and seal
Simple; gas and liquid distributors
Tab.1
Fig.2
Item
Domestic companies
FMC
MGC
Solvay
Degussa
Arkema
Working solution
Solvent 1
AR
AR
AR
AR
AR
AR
Solvent 2
TOP
TOP
TOP
Solvent 3
TBU
TBU
2-MCHA
AQ
EAQ
EAQ
AAQ
EAQ
EAQ
EAQ
Solubility of AQ /(g?L−1)
125–140
160–180
250–300
160–180
160–180
160–180
Pd mass fraction /%
0.3
0.3
1–2
1–2
1–2
1–2
Hydrogenation
Reactor
Fixed bed
Fixed bed
Fluidized bed
Fluidized bed
Fluidized bed
Fluidized bed
Hydrogenation efficiency/(g?L−1)
7–8
10–12
15–18
12–15
11–15
11–14
Extraction
H2O2 /%
27.5–35
27.5–35
45–48
43–46
40–45
40–45
Tab.2
Item
Fluidized-bed reactor (a foreign company)
Fixed-bed reactor (China)
Fixed-bed reactor (China) optimized
Main material
EAQ /(kg?tH2O2−1)
0.7
1.8
1.1
AR /(kg?tH2O2−1)
0.8
10.9
9
TOP /(kg?tH2O2−1)
0.8 (TBU)
1.3
0.54
H2 /(Nm3?tH2O2−1)
720
737
720
H3PO4/(kg?tH2O2−1)
0.6
0.9
0.8
Al2O3 /(kg?tH2O2−1)
3.5
12.8
9
Pd-based catalyst /(kg?tH2O2−1)
0.02 (Pd 2%)
0.4 (Pd 0.3%)
0.252 (Pd 0.3%)
Utilities
Cooling water /(t?tH2O2−1)
228
Electricity /(kWh?tH2O2−1)
700
742
Steam /(t?tH2O2−1)
1.6
Capacity/(t?a−1)
30000
22000
30000
Tab.3
Fig.3
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