GB/T 35150.2-2017 in English
VALIDTechnical requirements of dry process cement production complete equipment-Part 2:Burning system
- Issued on:2017-12-29
- Implemented on:2018-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 35150.2-2017新型干法水泥生产成套装备技术要求 第2部分：烧成系统》由TC465（全国建材装备标准化技术委员会）归口，主管部门为中国建筑材料联合会。
Introduction
1. Background and significance of standard formulation
GB/T 35150.2-2017 "Technical requirements for complete sets of equipment for new dry process cement production Part 2: Firing system" is a standard formulated under the promotion of China Building Materials Federation and combined with the development needs of cement production processes and technologies at home and abroad. This standard aims to regulate the equipment manufacturing, installation and commissioning, and performance testing of the firing system in the cement production process to ensure the efficiency, environmental protection and safety of cement production.
2. Comparison of technical framework of firing system
| Technical dimension | Traditional firing system | New dry firing system |
|---|---|---|
| Equipment composition | Single rotary kiln + simple preheating device | Preheater decomposition furnace system + high-efficiency rotary kiln + intelligent cooler |
| Energy consumption index | No clear energy efficiency standard, low efficiency | In compliance with GB16780, heat consumption ≤3136 kJ/kg, power consumption ≤28.5 kW·h/t |
| Environmental protection requirements | No strict pollutant emission restrictions | Nitrogen oxide and dust emissions comply with GB 4915, equipped with denitrification equipment and high-efficiency dust collector |
3. Interpretation of the core content of the standard
3.1 Equipment composition and technical requirements
The firing system equipment mainly includes:
- Preheater decomposition furnace system: must comply with JC/T 465 regulations, performance indicators are shown in Table 2.
- Rotary kiln: should meet the requirements of GB/T 32994, equipped with a cylinder temperature detection device and a kiln tail smoke chamber gas analyzer.
- Burners: It is recommended to use multi-channel pulverized coal burners with oil injection ignition devices (in line with JC/T 938).
3.2 Energy consumption and thermal efficiency management
Table 1: Energy consumption and thermal efficiency design indicators of clinker burning system
| Daily output P (t/d) | System thermal efficiency% | Clinker burning heat consumption kJ/kg | Clinker burning electricity consumption kW·h/t |
|---|---|---|---|
| P≥7000 | ≥56 | ≤3010 | ≤27.5 |
3.3 Safety and environmental protection requirements
The standard places special emphasis on the safety and environmental protection of the burning system:
- Equipped with a denitration device to ensure that nitrogen oxide emissions and ammonia escape comply with GB 4915.
- Dust removal equipment should use high-efficiency bag or electric bag composite dust collectors (in accordance with JC/T 2320).
- All exposed parts of mechanical transmission devices must be equipped with protective covers in accordance with GB/T 8196.
4. Implementation suggestions
4.1 Equipment selection and procurement
When selecting firing system equipment, the following principles should be followed:
- Adjust the heat consumption design value in combination with the site altitude (correction is required if it exceeds 1000m).
- Select motors that meet the energy efficiency grade requirements (GB18613-2012 Level 2 standard).
- Give priority to the use of intelligent control systems to ensure that the acquisition rate of process control parameters reaches 100%.
4.2 Installation, commissioning and performance testing
Focus on the commissioning phase:
- After completing the single-machine test run, conduct a comprehensive no-load and load linkage test run.
- During the load test run, gradually increase the sintering system to 100% load and ensure operational stability.
- During the performance test, all indicators must meet the requirements of Table 3, and the test time must be no less than 72 hours.
4.3 Operation, maintenance and optimization
To ensure long-term stable operation of the system:
- Regularly check the crusting and blockage of the preheater decomposition furnace and the rotary kiln, and clean them in time.
- Periodically maintain the burner and dust removal equipment to ensure their efficient operation.
- Establish a complete energy management information system to monitor and optimize energy consumption indicators in real time.
Conclusion: The implementation of GB/T 35150.2-2017 will significantly improve the energy efficiency and environmental performance of cement production and burning systems. Enterprises should strictly follow the standard requirements and control the entire life cycle from equipment selection, installation and commissioning to operation and maintenance to ensure efficient, clean and safe cement production processes.
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