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265 Gas Power Generation Flue Gas Desulfurization and Denitrification Project
In order to better meet environmental requirements and respond to the national ultra-low emission policy guidelines, adhering to the concept of "Lucid waters and lush mountains are invaluable assets," and in accordance with the requirements of Document No. 128 issued by the Hebei Provincial Department of Ecology and Environment on environmental emergency response in Hebei Province in 2022, Xinji Aosen Iron and Steel Group Co., Ltd. plans to implement desulfurization and denitrification measures for the flue gas of its 265 gas power generation, in accordance with the requirements stated in the notification for issuing the "Best technical guide of Hebei iron and steel industry environmental performance to Create Environmental Performance A-class ".
To address the environmental pollution caused by the by-products of sodium salts in the conventional soda-based desulfurization method, the project will adopt a calcium-based ultra-fine powder direct injection process as an alternative to the previous soda-based desulfurization method. This approach aims to completely solve the issue of sodium salt by-products and meet the process requirements for achieving environmental performance excellence (Grade A) in accordance with the environmental guidelines.
Furthermore, in the denitrification aspect, the project will make full use of the existing space in the boiler to minimize one-time investments. It will also utilize the temperature range of the flue gas to achieve optimal denitrification efficiency.
Original Design Data for the Project
| No. | Project | Parameter | Remark |
| 1 | Maximum fuel consumption | 257467m³/h | |
| 2 | Flue gas design flow rate | 441160Nm³/h | |
| 3 | Induced draft fan air volume | 410,000m³/h Wind pressure 4700pa Motor power 800KW | For a single unit, two in total |
| 4 | Forced draft fan air volume | 25,000m³/h Wind pressure 4600pa Motor power 250kw | For a single unit, two in total |
| 5 | Sulfur dioxide | 190mg/Nm³ | |
| 6 | Flue gas temperature | 200/140ºC | Air preheater outlet/Coal feed outlet |
| 7 | Oxygen content | 3% | |
| 8 | Nitrogen oxides | 190mg/Nm³ | |
| 9 | Particulate matter | 5mg/Nm³ |
Emission Indicator Requirements and Processes
The achieved emission standards after the completion and operation of this project (converted to a reference oxygen content of 3%) are as follows:
| No. | Parameter | Unit | Data | Remark |
| 1 | Outlet SO2 concentration | mg/Nm3 | ≤10 | |
| 2 | Outlet particulate matter concentration | mg/Nm3 | ≤5 | |
| 3 | Outlet NOx concentration | mg/Nm3 | ≤30 | |
| 4 | Ammonia leakage | mg/Nm3 | ≤2.3 |
Based on the original data and emission requirements of this project, the flue gas treatment process is as follows:
Desulfurization process: Calcium-based dry desulfurization process.
Desulfurization system dust removal process: Bag filter.
Denitrification process: SCR denitrification process.
The post-renovation flue gas treatment technology route is as follows:
Boiler flue gas → SCR reaction module → Calcium-based dry desulfurization reactor → Bag filter → Induced draft fan → Chimney.
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;
Project Appearance
Production Effects and Indicators
Shanghai Xuan Ding Group Environmental Protection Material Production Base
Company Profile
Vision
With decades of rapid development and accumulation, China has been perfect and mature on technology and management in various industrial areas, shaping a complete processing manufacturing industry with competitive price, well known for its excellent skill, high efficiency and hardworking team with qualification for personnel dispatching.
At the time of economic globalization, it is our consistent target and objective to integrate and export all kinds of technology, management mode, engineering project and manpower as per the actual requirement of our client With our own abundant technical strength, superior integration capability of technology and resources, well experienced of project implementation and management as basis and platform;
Let China go out to the world, and make the world know of China;
Professional
Professional technical and management team with abundant experience in the implementation of domestic and international projects;
Responsive
Responsive care translating your needs into complete solutions
Integration
Integrating various technologies and resources in China and fulfilling complementary advantages by relying on professional teams
Motivation
Motivated to provide optimal solution and quality products
Exceptional
Exceptional project delivery and execution meeting your expectations
Our Team
Professional technical team
Prime is staffed with professional import & export team skilled with the practice of import and export business, including sea freight packing, logistics organization, L/C review, cargo booking, and customs clearance, L/C negotiation, double authentication of shipment documents, etc.
All above personnel are well experienced in the execution of projects in Southeast Asia and Middle East.
Complete procurement mechanism
Our professional team of procurement offers strict management of supplier 's qualification inspection and selection, complete system of supplier listing, rating and elimination, to ensure the supplier is qualified and capable of implementing the project and supplied with product of high quality, and maintain a healthy and good condition of credibility, contract settlement and capital flow management.
Quality management system
Our complete quality management system , the process control covering from Scheme formulation , engineering technology, detailed design, to processing and manufacturing of equipment and material , ex-factory test and site erection and commissioning till it put into production, which through multi-level inspection, tour inspection, supervision and node control can ensure quality of the final product.
Well experienced
Executive team is abundant in experience of overseas project implementation with similar project working experiences, esp. experience in Southeast Asia, Middle East projects;
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