How to verify the performance indicators of newly built environmentally friendly lime kilns
The acceptance of newly built environmentally friendly lime kilns should be carried out around environmental standards and production efficiency, with a focus on verifying the following performance indicators:
1、 Environmental emission standards
Exhaust emissions: Through the online smoke monitoring system, verify whether the concentrations of sulfur dioxide (SO ₂), nitrogen oxides (NOx), and particulate matter (PM) meet national and local emission standards (such as ≤ 50mg/m ³, ≤ 100mg/m ³, ≤ 10mg/m ³).
Dust control: Check the operation effect of dust removal equipment (such as bag filter) to ensure that the dust emission concentration at the kiln tail is ≤ 10mg/m ³ and there is no visible dust in the workshop.
Noise control: When measured at a distance of 1 meter from the equipment, the noise level should be ≤ 85dB (A), in compliance with industrial noise standards.
2、 Production efficiency indicators
Thermal efficiency: Calculated based on fuel consumption and lime production, the thermal efficiency should be ≥ 80% to ensure that the energy utilization rate meets the standard.
Calcination quality: Check the activity of lime (≥ 300ml/4N HCl) and the firing rate (≤ 5%) to ensure that the product meets the requirements of industries such as metallurgy and building materials.
Capacity stability: Conduct a continuous 72 hour trial run to verify the compliance rate of the design capacity (such as 300 tons/day), with a fluctuation range of ≤± 5%.
3、 Acceptance process
Entrust third-party organizations to conduct environmental testing and issue compliance reports;
Collaborate with equipment suppliers and construction parties for joint debugging, and record key data;
Organize acceptance documents, including design drawings, operation manuals, maintenance records, etc., to form a complete file.
Through strict acceptance, it can ensure that the lime kiln achieves efficient and clean production, laying the foundation for long-term operation in the future.