Bulk High-Reactivity Calcium Hydroxide for Flue Gas Desulfurization and Water Treatment
In an era of tightening environmental regulations, industrial operators and municipal utilities are under constant pressure to meet stringent emission limits and water quality standards while controlling operating costs. The choice of reagent can make the difference between compliance and penalties, between efficient operation and costly downtime. High specific surface area calcium hydroxide—also known as hydrated lime—has emerged as a preferred solution for flue gas desulfurization, wastewater neutralization, and advanced calcium-based material production. Tianjin Huineng Environmental Protection Technology Co., Ltd. (Tianjin Huineng) has dedicated 35 years to perfecting this chemistry, and today supplies high-performance calcium hydroxide to leading steel, coking, glass, and waste-to-energy operators across China and beyond.
What Sets High Specific Surface Calcium Hydroxide Apart
Not all hydrated lime is created equal. The reactivity of calcium hydroxide in desulfurization and water treatment depends largely on its specific surface area and pore volume—the physical characteristics that determine how quickly and completely the material can contact and neutralize acidic gases or dissolved contaminants. Tianjin Huineng’s high specific surface calcium hydroxide is produced at a dedicated Tianjin facility with an annual capacity of 100,000 metric tons. Using high-activity quicklime and customized composite active additives, we precisely control every process parameter to deliver consistent, superior performance.
Our product is available in two grades—First Grade and Superior Grade—to match application requirements and budget considerations. Key specifications include:
- Calcium hydroxide purity: ≥90% (First Grade) and ≥95% (Superior Grade)
- Specific surface area: ≥45 m²/g and ≥55 m²/g respectively
- Pore volume: ≥0.2 cm³/g and ≥0.25 cm³/g
- Heavy metal content: ≤10 mg/kg for both grades, ensuring environmental safety
- Particle size (325 mesh sieve rate): 90% and 95% passing
- Drying loss: ≤1%
For applications demanding the highest whiteness and even lower drying loss, our high-end calcium hydroxide line—produced at a separate facility with 150,000 tons/year capacity—offers whiteness of 90 and 92, with drying loss ≤0.5%. Both product families share the same commitment to ultra-low heavy metals and consistent quality.
Performance Benefits for Demanding Applications
The high surface area and pore volume of our calcium hydroxide translate directly into faster reaction kinetics and higher utilization efficiency. In dry flue gas desulfurization, this means you can achieve target removal rates with less reagent, reducing both chemical consumption and solid waste generation. The material performs effectively across a wide temperature range—from ambient up to 500°C—making it suitable for hot stove desulfurization, dry coke quenching, and waste-to-energy boiler acid removal. As a substitute for sodium bicarbonate, it offers a cost-effective alternative without compromising on performance.
In water treatment, our calcium hydroxide’s stable performance and ultra-low heavy metal content meet the rigorous demands of municipal and industrial wastewater neutralization, including electroplating wastewater and steel industry effluent. The product is compatible with automated dosing systems, ensuring precise pH control and efficient sludge management. For manufacturers of calcium stearate, petroleum lubricants, and other calcium-based new materials, the high purity and consistent particle size distribution support reliable downstream processing.
Packaging is engineered for global logistics. We offer 25 kg, 50 kg, 750 kg, and 1000 kg woven bags with PE inner liners, designed to prevent moisture ingress and caking during long-distance sea transport. As visible in our product images, the material is a fine, free-flowing white powder that disperses readily in water and pneumatic conveying systems.
Proven in the Field: Typical Applications and Users
Tianjin Huineng’s calcium hydroxide is trusted by some of China’s most demanding industrial operators. Our reference list includes:
- Baowu Steel Shaogang Co., Ltd. — 4500 m³ blast furnace hot stove desulfurization (Steel)
- Shougang Jingtang Iron & Steel Co., Ltd. — dry coke quenching desulfurization (Coking)
- Shandong Taishan Shenglvyuan Glass Co., Ltd. — dry desulfurization + SCR denitrification (Glass)
- Tianjin Quantai Domestic Waste Treatment Co., Ltd. — 350 tons/day waste-to-energy boiler acid removal (Waste-to-Energy)
- Tianjin Liqun Investment Co., Ltd. — electroplating wastewater treatment (Chemical Industry)
- Chengde Jianlong Special Steel Co., Ltd. — industrial wastewater treatment (Iron and Steel)
These projects demonstrate the versatility of our product across diverse flue gas and water matrices, and they reflect the confidence that major industrial groups place in our quality consistency and supply reliability.
Company Capabilities: More Than a Lime Supplier
Tianjin Huineng Environmental Protection Technology Co., Ltd. is a national high-tech enterprise specializing in the R&D and production of high specific surface calcium hydroxide, flue gas desulfurization and denitrification, and EPC/O&M services for flue gas waste heat recovery systems. Headquartered in Tianjin, China, we operate a Municipal Enterprise Technology Center and employ a team that includes one expert entitled to the State Council Special Allowance, 14 senior engineers, and 35 professional engineers. This technical depth enables us to work closely with customers to optimize reagent selection, dosing strategies, and system integration.
We hold qualifications for the design and manufacture of boilers and pressure vessels, as well as Class-II General Contracting for special environmental engineering projects. Our annual sales exceed RMB 600 million, and our business covers metallurgy, power generation, non-ferrous metals, chemical industry, building materials, and inorganic salt sectors. We maintain long-term cooperation with universities and research institutes, and we have deep partnerships with industry leaders such as Baowu, Ansteel, Shougang, MCC Jingcheng, MCC Southern Engineering, and MCC Coking & Refractory.
Our production base is equipped for automated, consistent manufacturing. From high-activity quicklime selection to composite additive formulation and precise kiln control, every step is monitored to ensure that each batch meets the declared specifications. The result is a product that performs predictably, shift after shift, shipment after shipment.
Industry Insight: The Shift Toward High-Performance Hydrated Lime
Across the steel, coking, glass, and waste-to-energy sectors, operators are moving away from commodity-grade lime toward high-performance calcium hydroxide that can deliver measurable savings. The reasons are clear: tighter emission limits require higher removal efficiency; landfill restrictions and circular economy goals favor calcium-based solid waste that can be recovered or reused; and the volatility of alternative reagents like sodium bicarbonate makes cost predictability a priority. High specific surface calcium hydroxide addresses all three—it is efficient, its desulfurized ash is a calcium-based solid waste suitable for resource recovery, and its cost profile is stable.
Moreover, as environmental regulations evolve in Southeast Asia, the Middle East, and other emerging industrial regions, the demand for reliable, high-quality hydrated lime is growing. Buyers are looking for suppliers who can provide not just product, but technical support, consistent quality, and logistics that protect material integrity from plant to plant.
Your Partner for Reliable Calcium Hydroxide Supply
Whether you are evaluating a switch from sodium bicarbonate in dry desulfurization, optimizing pH control in a wastewater plant, or sourcing raw material for calcium-based specialty products, Tianjin Huineng offers the product consistency, technical depth, and production capacity to support your operations. We welcome inquiries from distributors, engineering firms, and end users worldwide. Let us discuss your specifications, request a sample, or provide a technical data sheet for your team.
Contact us today:
Tianjin Huineng Environmental Protection Technology Co., Ltd.
No.68 Bangxi Highway, Bangjun Town, Jizhou District, Tianjin City, P.R.China
Contact: Zhu Huadong
Phone: +86 188 1265 9055
Landline: +86 22 2285 8788
Fax: +86-22-22858788
Email: zhuhuadong@tjhngroup.com
Website: https://www.tjhuineng.com.cn
Subsidiary: Tianjin Zhihui New Materials Co., Ltd.
No.37 Panlongshan Road, Economic Development Zone, Jizhou District, Tianjin City, P.R.China
Contact: Gao Zhijun
Phone: +86 188 1265 9088
Landline: +86 22 6078 1889
Email: gaozhijun@tjhngroup.com
Website: https://www.tjzhihui.com.cn
We look forward to supporting your next project with high-performance calcium hydroxide and responsive service.
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