NB/T 11684-2024 in English
VALIDEnvironmental protection design code for thermal power plants
- Issued on:2024-09-24
- Implemented on:2025-03-24
- File Format:PDF
- Delivery:Via email within 7 business days
$1,212.00
| Standard No: | NB/T 11684-2024 |
| Document status: | VALID |
| Title in English: | Environmental protection design code for thermal power plants |
| Title in Chinese: | 火力发电厂环境保护设计规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 7 business days |
| Issued on: | 2024-09-24 |
| Implemented on: | 2025-03-24 |
| Chinese Classification: | P60-Electric power engineering in general |
| Professional Classification: | NB-Energy |
| Related Keywords: | environmental protection design code
environmental protection environmental capacity analysis environmental protection investment accounts so₂≤35mg/m³ environmental protection environmental protection facilities |
Introduction
Core content structure of the standard
| Chapters | Key points | Technical indicators |
|---|---|---|
| General provisions | Scope of application and design principles | Applicable to units of 300MW and above |
| Pollution prevention and control design | 6 major pollution control systems | Ultra-low emission limit: SO₂≤35mg/m³ |
| Environmental protection monitoring | Online monitoring system configuration | CEMS installation rate100% |
Key technical innovations
1. Ultra-low emission technology system
Coal-fired power plants are required to adopt the synergistic process of SCR denitrification + electric bag composite dust removal + wet desulfurization under the condition of a baseline oxygen content of 6%, to ensure that particulate matter is ≤10mg/m³ and NOx is ≤50mg/m³.
2. Wastewater zero discharge plan
Appendix A specifies 12 types of wastewater treatment routes, among which the combined process of flue gas evaporation crystallization or membrane concentration is recommended for desulfurization wastewater, so as to achieve a water resource utilization rate of ≥95% for the entire plant.
Key points in the design phase
| Phase | Key points of environmental protection work | Output results |
|---|---|---|
| Feasibility study | Site selection and environmental capacity analysis | Environmental protection investment accounts for 12-15% |
| Preliminary design | Determination of pollution control facility parameters | Impermeability zoning map (Appendix B) |
Implementation difficulties and countermeasures
• Coordinated control of multiple pollutants
It is necessary to comprehensively consider the synergistic removal effects of desulfurization wastewater treatment and mercury. It is recommended to use activated carbon injection + WFGDcombined process.
• Renovation of old units
The principle of "leading the old with the new" requires that the renovation project simultaneously upgrades the existing environmental protection facilities, focusing on solving the problem of unorganized emissions.
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