For the design of sintered and fused agent preparation facilities, it must be ensured that the facilities for residue collecting and treating, ,environmental protection reviewing, daily operation and other aspects meet the requirements of equipment and technology standards, and all factors related to safety, health and environmental protection are taken into consideration.
1. Residue Collecting and Treating Facilities
In the process of sintering and fusing agents, harmful gas, dust and some semi-solid products may be generated. In order to protect the environment, residues should be collected first, and then treated and disposed of through suitable facilities.
The residual collection unit mainly collects the exhaust gas, dust and semi-solid particles generated in the sintering or fusion process, and then the collected substances are discharged after processing treatment to meet the requirements of environmental protection.
The main processing treatment of sintering and fused agent waste includes smoke filtration and dust removal, chemical treatment, etc. A bag type filter should be installed in the factory and the smoke and dust should be filtered before discharging. After the dust and smoke is filtered, a control device should be installed to adjust the smoke concentration in the filtered exhaust gas according to the requirements for emission standards. In addition, chemical treatment process can also be used to reduce the harmful component in the smoke and enhance the smoke treatment effect.
2. Facilities for Environmental Protection Review
When designing the preparation facility of sintering and fused agent, it is necessary to review the safety and environmental protection process in formal professional environmental protection review departments. The environmental protection review department will carry out professional and comprehensive evaluation on the production process of preparing sintering agents, so as to reduce the negative impact of pollutant release to the greatest extent.
2.1 Review Items
the environmental protection review items mainly include the comprehensive evaluation of environmental acceptance investigation on the sintering and fused agent preparation facility and relevant environmental quality monitoring.
The environmental acceptance survey includes the investigation and evaluation of social environment, air environment, water environment and soil environment. For air environment, the amount of pollutant emissions reflection, the impact of localized polluted environment and the situation of new pollutants emission should be especially considered. For the water environment, it is necessary to consider such issues as the quality of raw water for production, the use of industrial water, the quantity and quality of wastewater, the related restrictions and etc.
For the relevant environmental quality monitoring, four categories are included: one is air environment monitoring, two is wastewater monitoring, three is solid waste monitoring and four is noise monitoring. According to the feedback of environmental quality monitoring, if any environmental problems are found, corresponding measures should be adopted to respond.
2.2 Regulatory Measures
For the design and verification of sintering and fused agent pre-preparation facilities, in addition to make sure that the facilities meet the requirements of environmental protection and safety standards, pay attention to the following items:
1) Sources of dust-generating activities should be designed to have isolation, dust removal and cover treatment;
2) Facilities of wastewater should be arranged with segregation and interception, large sediment/sludge/oil-removing and biochemistry treatment;
3) Emission from flue gas should be equipped with dust-removing system to reduce air pollution by exhaust gas.
3. Daily Operation Facilities
The daily operation of sintering and fused agent preparation facilities must be strictly supervised and the operating team should understand the emergency treatment measures for various emergency situations. During the daily operation of the device, automatic warning integrated display instrument should be installed on the device according to the requirements of relevant standards to monitor the indicators of the device in real time.——
When the equipment is under emergency situation, the system will give a prompt warning immediately. At the same time, the emergency treatment measures should be formulated in advance to deal with the abnormal situation. The emergency treatment measures should include the warning range time limit and the emergency shut-off time limit.
In addition, there should be a monitoring and controlling room provided in the workshop of sintering and fused agent preparation facility. The personnel on duty should have systematic daily working plan, and the operator should be on duty at regular time to ensure that there is no less than two people on duty, so as to detect and respond to the production situation in time.
4. Fire Prevention Facilities
In the design of sintering and fused agent preparation facility, it is necessary to comprehensively consider the fire hazard phenomenon and personal safety protection, and reasonable fire prevention and protection measures should be taken to avoid fire accidents.
The main measures for fire prevention and protection include: one is to equip with fire prevention system and fire-fighting and fire-fighting devices, two is to take special fire-fighting measures for harmful gas and dust in the production process, three is to equip with manual or automatic fire alarm system, four is to set up special fire extinguishing facilities for dangerous material storage warehouse, and five is to equip with fireproof walls, safe passages and other fireproof facilities.
In addition to this, the best way to reduce fire risks is to arrange personnel to patrol the production site regularly and maintain it. Technician personnel should be arranged at fixed time to check the fire-fighting equipment, fire-fighting and fire-fighting facilities, fire-fighting ducts, firewalls and special passages, and repair or substitute in time, and record the inspection condition.
In conclusion, for the design of sintered and fused agent preparation facilities, it is necessary to ensure that the facilities for residue collecting and treating, and environmental protection can meet the requirements of equipment and technology standards, and to take all related factors into consideration. In addition, fire prevention and control measures should also be taken to avoid fire accidents and ensure personnel safety.
