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Introduction to SDS+Dust Removal+SCR Desulfurization and Denitrification Project
There are three reheating furnaces in total in Tangshan Wenfeng, all of which adopt the SDS (Semi-Dry Scrubber) sodium bicarbonate dry desulfurization process, along with a dust collector and SCR catalyst for denitrification.
In this project, each of the three reheating furnaces is equipped with a dedicated desulfurization, dust removal, and denitrification system for flue gas and coal smoke. The ammonia storage and delivery system are shared among the three furnaces.
1.1 Original Design Parameters of Reheating Furnace
No. | Project | Unit | Value | Remark | ||
1 | Type | Dual Thermal Storage | ||||
2 | Qty | unit | 3 | |||
Furnace #1 | Furnace #2 | Furnace #3 | ||||
3 | Rated Cold Charge Production | t/h | 120 | 13 | 130 | |
4 | Rated Blast Furnace Gas Flowrate | Nm3/h | 60800 | 63860 | 60000 | |
5 | Rated Auxiliary Air Flowrate |
Nm3/h |
~45000 (Fan Power:200kW ) |
~45000 (Fan Power:220kW ) |
~45000 (Fan Power:220kW ) |
|
6 | Blower Pressure | Pa | 9700 | 9000 | 9500 | |
7 | Rated Flue Gas Flowrate | m3/h | ~65000 (Fan Power:132kW ) |
~65000 (Fan Power:160kW ) |
~65000(Fan Power:200kW ) |
|
8 | Total Pressure of Induced Draft Fan | Pa | 4300 | 6000 | 6000 | |
9 | Rated Coal Gas Flowrate |
m3/h |
~87500 (Fan Power:132kW ) |
~87500 (Fan Power:160kW ) |
~87500 (Fan Power:200kW ) |
|
10 | Total Pressure of Coal Induced Draft Fan |
Pa | 5400 | 6000 | 6000 | |
11 | Flue Gas Temperature | ºC | 78-145 | 78-145 | 78-145 | |
12 | Flue Gas Dust Concentration | mg/Nm3 | 8-15 | 8-15 | 8-15 | |
13 | Flue Gas SOx Concentration | mg/Nm3 | 30-150 | 30-150 | 30-150 | |
14 | Flue Gas NOx Concentration | mg/Nm3 | 100-300 | 100-300 | 100-300 | |
15 | Flue Gas CO Concentration | ppm | ≤15000 | ≤15000 | ≤15000 | |
16 | Flue Gas Oxygen Content | % | 3-10 | 3-10 | 3-10 | |
17 | Flue Gas Moisture Content | % | 1.01-1.5 | 1.01-1.5 | 1.01-1.5 |
1.2 Emission Standards
Guaranteed Emission Values: SO2 Concentration at the outlet: <25mg/Nm3, Allowance: <15mg/Nm3.
NOx Concentration at the outlet: <80mg/Nm3, Allowance: <35mg/Nm3.
Particulate Matter (PM) Concentration in flue gas: <8mg/Nm3, Allowance: <5mg/Nm3.
Pictures of the Construction Process:
Completion Pictures:
Since the beginning of its establishment, Shanghai Xuan Ding has been based on its traditional business (general contracting of furnace engineering), and at the same time has been fully engaged in the development and practice of environmental protection business. Its Furnace Division, Environmental Protection Division and Smelting Division have worked together closely to achieve the beneficial combination of process + environmental protection.
As a high-tech enterprise in Shanghai, Shanghai Xuan Ding Group has the qualification of environmental protection special design class B and environmental protection engineering general contract.It also has by-product treatment qualification and its own environmental protection material production and processing base based on engineering technology company. Shanghai Xuan Ding Group is an integrated solution provider, which can realize engineering projects + core environmental protection materials (calcium-based ultrafine powder) supply + by-product recovery (or closed-loop circulation) + operation and maintenance etc.
It is worth mentioning that the Jiangsu Hai 'an/Anhui Tongling/Anhui Chizhou production base of Shanghai Xuan Ding Group is a production and processing base integrating the research and development, testing, mass production and final engineering application of new environmental protection materials such as calcium-based desulfurizer (calcium-based ultrafine powder).This allows for better assurance of material performance and quality, and provides maximum convenience for maintenance or by-product recovery that may be required;
Shanghai Xuan Ding Group Environmental Protection Material Production Base
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