Integrated system for coke oven flue gas desulfurization and denitrification and waste heat recovery
A technology for flue gas desulfurization and coke oven flue, which is applied in steam generation method using heat carrier, chemical instrument and method, dispersed particle filtration, etc. The effect of large evaporation, more waste heat recovery and low exhaust temperature
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[0056] Example 1
[0057] An integrated system for coke oven flue gas desulfurization, denitrification and waste heat recovery, comprising a coke oven 1, a low-temperature SCR denitrification system 2, a waste heat boiler 3, a flue 10, a mill 7, a filter system 4, and a chimney 6; The coke oven 1, the low-temperature SCR denitration system 2, the waste heat boiler 3, the filter system 4, and the chimney 6 are connected in turn through the flue 10, and the flue 10 between the waste heat boiler 3 and the filter system 4 is provided with a dry powder absorbent The inlet, the dry powder absorbent inlet is connected to the outlet of the mill 7 through a pipe, and the absorbent inlet is provided on the mill 7.
[0058] The present invention adopts a coke oven flue gas low-temperature SCR denitrification + dry desulfurization system. The prior art generally uses a coke oven flue gas semi-dry desulfurization + low-temperature SCR denitrification system. The specific comparison is shown in ...
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[0061] Example 2
[0062] An integrated system for coke oven flue gas desulfurization, denitrification and waste heat recovery, comprising a coke oven 1, a low-temperature SCR denitrification system 2, a waste heat boiler 3, a flue 10, a mill 7, a filter system 4, and a chimney 6; The coke oven 1, the low-temperature SCR denitration system 2, the waste heat boiler 3, the filter system 4, and the chimney 6 are connected in turn through the flue 10, and the flue 10 between the waste heat boiler 3 and the filter system 4 is provided with a dry powder absorbent The inlet, the dry powder absorbent inlet is connected to the outlet of the mill 7 through a pipe, and the absorbent inlet is provided on the mill 7.
[0063] The waste heat boiler 3 is a heat pipe natural circulation waste heat boiler. The existing technology generally uses a flue-type water pipe natural circulation waste heat boiler. The specific comparison is shown in Table 2:
[0064] Table 2. Comparison of heat pipe natural ...
Example Embodiment
[0066] Example 3
[0067] An integrated system for coke oven flue gas desulfurization, denitrification and waste heat recovery, comprising a coke oven 1, a low-temperature SCR denitrification system 2, a waste heat boiler 3, a flue 10, a mill 7, a filter system 4, and a chimney 6; The coke oven 1, the low-temperature SCR denitration system 2, the waste heat boiler 3, the filter system 4, and the chimney 6 are connected in turn through the flue 10, and the flue 10 between the waste heat boiler 3 and the filter system 4 is provided with a dry powder absorbent The inlet, the dry powder absorbent inlet is connected to the outlet of the mill 7 through a pipe, and the absorbent inlet is provided on the mill 7.
[0068] The low-temperature SCR denitration system 2 is an SCR denitration system with a temperature range of 160°C to 290°C.
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