This is a dust removal and DeNOx project we delivered in Busan, South Korea. The client is a local company producing quicklime using seashells as raw material.
Dust and NOx are generated at the tail end of the rotary kiln, so a #baghouse dust collector and an #SCR denitrification system were installed at the kiln outlet. After treatment through the baghouse and SCR, particulate emissions are reduced to below 10 mg/Nm³, while NOx emissions are controlled to below 50 mg/Nm³.
Another Phosphorus Chemical Industry project by #Baolan is currently under construction. a #SCR + #WESP system
👏 The following is the construction update of the SCR equipment
SCR (Selective Catalytic Reduction) is a selective catalytic reduction technology. At present, ammonia catalytic reduction method is the most widely used technology. It has no by-products, no secondary pollution, simple device structure, high removal efficiency (up to 90%), reliable operation, and easy maintenance.
Another chemical industry project by #Baolan has been successfully completed: a #zeolite rotary wheel + #RTO system.
This project adopts a Cylinder type zeolite rotor, designed to adsorb and concentrate #VOCs from large airflows with low inlet concentrations. By concentrating the organic compounds first, the VOC stream enters the RTO (Regenerative Thermal Oxidizer) at a higher concentration for thermal oxidation.
This approach significantly reduces both the capital investment and long-term operating costs of the RTO system, delivering an efficient and cost-effective solution for low-concentration, high-volume VOCs treatment.
General Technical Specification for Flue Gas Limestone/Lime-Gypsum Wet Desulfurization
1. Purpose and Scope
This national environmental protection standard aims to regulate the design, construction, acceptance, operation, and maintenance of limestone/lime-gypsum wet flue gas desulfurization (FGD) systems. It applies to various industrial sectors including power, metallurgy, chemicals, and building materials.
2. Definitions
Absorbent: Alkaline materials like limestone (CaCO₃), lime (CaO), or carbide slag used to absorb SO₂.
Absorber Tower: The primary structure where SO₂ reacts with the absorbent.
Desulfurization Efficiency: Calculated using the SO₂ concentration before and after treatment.
3. Pollution Load
New and existing facilities must evaluate SO₂ content based on maximum operating conditions or measurements.
SO₂ should not exceed 12,000 mg/m³ at 6% O₂ (dry basis).
4. Design Principles
Systems should be safe, reliable, and economically viable.
Integration with main project utilities is preferred.
Layouts must ensure minimal noise, proper drainage, fire protection, and minimal land usage.
The desulfurization by-product (gypsum) should be reused when feasible.
5. Process Design
Desulfurization processes include single or double-loop systems (spray towers, tray towers, or turbulent enhanced systems).
pH control of the slurry is essential (5.2–5.8 for limestone, 4–4.8 for lime).
Ca/S mole ratio should not exceed 1.03.
De-misting and anti-corrosion requirements are specified for absorbers and ducts. 2/2 General Technical Specification for Flue Gas Limestone/Lime-Gypsum Wet Desulfurization
6. Major Equipment
Specifications for booster fans, oxidation fans, wet/dry mills, spray systems, and heat exchangers (GGH, WGGH) are outlined.
Materials for construction include FRP, stainless steel (e.g., 316L, 2205), and corrosion-resistant non-metallic linings (rubber, glass flakes).
7. Control and Monitoring
CEMS (Continuous Emission Monitoring Systems) are mandatory at both inlet and outlet points.
Multiple detection instruments for pH, SO₂, gypsum moisture, and slurry density are required.
Centralized control rooms are recommended, possibly integrated into the main plant's control system.
8. Auxiliary Systems
Includes water supply, air compression, steam systems, and wastewater treatment.
Wastewater must meet discharge standards and should ideally be recycled.
Solid by-products must be properly stored or reused.
9. Construction and Safety
Construction units must meet national certification standards.
Safety measures cover fire protection, noise control, emergency planning, and occupational hygiene.
Special safety rules apply for lime handling and equipment with >85dB(A) noise levels.
10. Inspection and Acceptance
Specifications for equipment installation, testing procedures, and construction material validation are provided.
Pre-operation checklists and environmental approval compliance are required.
BAOLAN EP INC.
This is a dust removal and DeNOx project we delivered in Busan, South Korea. The client is a local company producing quicklime using seashells as raw material.
Dust and NOx are generated at the tail end of the rotary kiln, so a #baghouse dust collector and an #SCR denitrification system were installed at the kiln outlet. After treatment through the baghouse and SCR, particulate emissions are reduced to below 10 mg/Nm³, while NOx emissions are controlled to below 50 mg/Nm³.
7 months ago | [YT] | 0
View 0 replies
BAOLAN EP INC.
Another Phosphorus Chemical Industry project by #Baolan is currently under construction. a #SCR + #WESP system
👏 The following is the construction update of the SCR equipment
SCR (Selective Catalytic Reduction) is a selective catalytic reduction technology. At present, ammonia catalytic reduction method is the most widely used technology. It has no by-products, no secondary pollution, simple device structure, high removal efficiency (up to 90%), reliable operation, and easy maintenance.
7 months ago (edited) | [YT] | 0
View 0 replies
BAOLAN EP INC.
Another chemical industry project by #Baolan has been successfully completed: a #zeolite rotary wheel + #RTO system.
This project adopts a Cylinder type zeolite rotor, designed to adsorb and concentrate #VOCs from large airflows with low inlet concentrations. By concentrating the organic compounds first, the VOC stream enters the RTO (Regenerative Thermal Oxidizer) at a higher concentration for thermal oxidation.
This approach significantly reduces both the capital investment and long-term operating costs of the RTO system, delivering an efficient and cost-effective solution for low-concentration, high-volume VOCs treatment.
8 months ago (edited) | [YT] | 1
View 0 replies
BAOLAN EP INC.
General Technical Specification for Flue Gas Limestone/Lime-Gypsum Wet Desulfurization
1. Purpose and Scope
This national environmental protection standard aims to regulate the design, construction, acceptance, operation, and maintenance of limestone/lime-gypsum wet flue gas desulfurization (FGD) systems. It applies to various industrial sectors including power, metallurgy, chemicals, and building materials.
2. Definitions
Absorbent: Alkaline materials like limestone (CaCO₃), lime (CaO), or carbide slag used to absorb SO₂.
Absorber Tower: The primary structure where SO₂ reacts with the absorbent.
Desulfurization Efficiency: Calculated using the SO₂ concentration before and after treatment.
3. Pollution Load
New and existing facilities must evaluate SO₂ content based on maximum operating conditions or measurements.
SO₂ should not exceed 12,000 mg/m³ at 6% O₂ (dry basis).
4. Design Principles
Systems should be safe, reliable, and economically viable.
Integration with main project utilities is preferred.
Layouts must ensure minimal noise, proper drainage, fire protection, and minimal land usage.
The desulfurization by-product (gypsum) should be reused when feasible.
5. Process Design
Desulfurization processes include single or double-loop systems (spray towers, tray towers, or turbulent enhanced systems).
pH control of the slurry is essential (5.2–5.8 for limestone, 4–4.8 for lime).
Ca/S mole ratio should not exceed 1.03.
De-misting and anti-corrosion requirements are specified for absorbers and ducts.
2/2 General Technical Specification for Flue Gas Limestone/Lime-Gypsum Wet Desulfurization
6. Major Equipment
Specifications for booster fans, oxidation fans, wet/dry mills, spray systems, and heat exchangers (GGH, WGGH) are outlined.
Materials for construction include FRP, stainless steel (e.g., 316L, 2205), and corrosion-resistant non-metallic linings (rubber, glass flakes).
7. Control and Monitoring
CEMS (Continuous Emission Monitoring Systems) are mandatory at both inlet and outlet points.
Multiple detection instruments for pH, SO₂, gypsum moisture, and slurry density are required.
Centralized control rooms are recommended, possibly integrated into the main plant's control system.
8. Auxiliary Systems
Includes water supply, air compression, steam systems, and wastewater treatment.
Wastewater must meet discharge standards and should ideally be recycled.
Solid by-products must be properly stored or reused.
9. Construction and Safety
Construction units must meet national certification standards.
Safety measures cover fire protection, noise control, emergency planning, and occupational hygiene.
Special safety rules apply for lime handling and equipment with >85dB(A) noise levels.
10. Inspection and Acceptance
Specifications for equipment installation, testing procedures, and construction material validation are provided.
Pre-operation checklists and environmental approval compliance are required.
1 year ago | [YT] | 0
View 0 replies