Sodium bicarbonate ultrafine powder is a micron‑sized white powder produced by ultrafine grinding, characterized by a large specific surface area and high reactivity. It is widely used in industrial flue‑gas desulfurization, rubber and plastic foaming, fine chemical manufacturing, and environmental protection and remediation applications.

Sodium Bicarbonate (Ultra-Fine Powder)

Product Overview

Sodium bicarbonate ultra-fine powder is a micron‑scale white powder produced through an ultra‑fine grinding process. With its enormous specific surface area and high reactivity, it plays an irreplaceable core role in industrial flue gas dry desulfurization, rubber and plastic foaming, fine chemical manufacturing, and environmental protection applications. This product features a delicate texture and uniform dispersion, combining outstanding chemical reactivity with stable physical properties, meeting the high‑precision requirements of multiple industries. It is an industrial core raw material that delivers both environmental and economic value.

Technical Principle

The core technical principle of ultra‑fine sodium bicarbonate powder (NaHCO₃, commonly known as baking soda) lies in its exceptionally large specific surface area and heightened reactivity achieved through ultra‑fining. In flue gas desulfurization applications, the ultra‑fine powder is injected into high‑temperature flue gas streams ranging from 140°C to 260°C via a dry‑spray process. At these elevated temperatures, it rapidly decomposes into porous sodium carbonate (Na₂CO₃), which then undergoes rapid neutralization reactions with acidic gases such as SO₂, HCl, and HF, forming stable salts like sodium sulfate and sodium chloride. The corresponding chemical reaction equations are as follows:

NaHCO₃ + HCl → NaCl + H₂O + CO₂

2NaHCO₃ + SO₂ + ½O₂ → Na₂SO₄ + H₂O + 2CO₂

NaHCO₃ + HF → NaF + H₂O + CO₂

Performance Parameters

1. Product Form and Fineness: A white crystalline powder with fineness ranging from 300 mesh to 2000 mesh (median particle size approximately 50 μm to 2–5 μm). Some high‑end specifications can reach 3200 mesh; d90 can be controlled between 10–45 μm, with advanced processes achieving d90 < 15 μm or even d90 < 20 μm. The particle size distribution is concentrated, the powder is finely dispersed and evenly distributed, exhibiting excellent dispersibility and flowability.

2. Specific Surface Area and Reactivity: As the degree of pulverization increases, the specific surface area rises from 0.86 m²/g to 1.83 m²/g, significantly enhancing reactivity and greatly expanding the contact area with acidic gases in flue gas, resulting in reaction efficiency far superior to that of conventional particle sizes.

3. Purity Indicators: Total alkali content (expressed as NaHCO₃) reaches 99.0% to 100.5%; loss on drying ≤ 0.20%; pH of a 10 g/L aqueous solution ≤ 8.6. These values comply with GB/T 1606 standards for industrial sodium bicarbonate and GB 1886.2 national standards for food‑grade sodium bicarbonate.

4. Desulfurization Efficiency: As a dry‑process desulfurizing agent, it achieves desulfurization efficiencies exceeding 90%, and in certain operating conditions even surpasses 95%, capable of removing over 95% of SO₂ and 99% of HCl from exhaust gases.

5. Physical Properties: Exhibits excellent spray performance, dispersibility, and flowability; shows no significant water absorption or caking under open‑environment conditions, allowing for extended storage in large‑tonnage batches.

Core Advantages

1. Exceptional Reactivity and Leading Desulfurization Efficiency: After meticulous grinding, the specific surface area expands dramatically, exponentially increasing the contact area with acidic gases in flue gas. This enables rapid reactions at lower temperatures (120–200°C), delivering desulfurization efficiencies exceeding 90%, far surpassing those of conventional particle‑size sodium bicarbonate products. As a dry‑process desulfurizing agent, its dosage is roughly one‑quarter that of calcium hydroxide adsorbents, effectively reducing overall reagent costs.

2. Simple Process and Low Operating Costs: Utilizing a dry‑process desulfurization method eliminates the need for complex slurry preparation and wastewater treatment systems. Equipment investment and footprint amount to only 30%–50% of traditional limestone‑gypsum methods. The desulfurization byproducts—dry sodium sulfate and sodium sulfite powders—can be directly collected for use in building materials, chemical production, and other fields, enabling resource recycling without generating wastewater or solid waste, thus avoiding secondary pollution.

3. Superior Product Form and Convenient Use: The powder boasts excellent flowability, compatible with automated feeding equipment, minimizing dust generation during processing. Its particle size distribution is concentrated and uniformly dispersed, ensuring even material distribution during dry‑spray operations with minimal energy input. Flexible packaging options include standard 25 kg woven bags, with custom 50 kg and ton‑bags (1000 kg) available to meet diverse customer needs.

4. Solid Technical Credentials: Founded in 2015, Weifang Jiangchang Chemical has been deeply engaged in the chemical industry for many years, accumulating extensive production experience. The company operates a 8,000+ square meter facility with over 120 employees, maintaining ample inventory and swift response times, ensuring a continuous and stable supply of ultra‑fine sodium bicarbonate products. It holds numerous utility model patents (such as anti‑clogging granulators and easy‑to‑clean dryers) and has been recognized as a national-level technology‑based SME, guaranteeing reliable product quality.

Core Functions

1. Flue Gas Desulfurization and Deacidification: Rapidly reacts with acidic gases such as SO₂, HCl, and HF in flue gas, efficiently removing acid pollutants with desulfurization efficiency ≥ 90% and HCl removal rate ≥ 99%, effectively reducing the concentration of acid contaminants in exhaust gases and meeting environmental emission standards.

2. Foaming and Porosity Creation: When heated in rubber and plastic foaming products, it releases CO₂ gas, forming uniform, fine cellular structures that enhance product appearance and physical properties, catering to the production needs of various rubber and plastic foaming items.

3. High Dispersibility and Flowability: Following ultra‑fining, it exhibits excellent spray performance, dispersibility, and flowability, ensuring uniform material distribution during dry‑spray operations with minimal energy input, thereby reducing transport losses and improving usage efficiency.

4. Moisture‑Resistant and Anti‑Caking Properties: After surface treatment, the ultra‑fine sodium bicarbonate powder demonstrates exceptional water repellency, showing no significant water absorption or caking under open‑environment conditions, allowing for long‑term storage in large‑tonnage batches while maintaining stable product performance.

Target Customer Groups

1. Coal‑fired Power Plants and Industrial Boiler Users: For coal‑fired power plants, industrial boilers, and metallurgical kilns that require efficient removal of acidic gases like SO₂ from flue gas, ultra‑fine sodium bicarbonate serves as the core raw material for dry‑process desulfurization.

2. Waste Incineration Power Generation Enterprises: During waste incineration, alongside SO₂, acidic gases such as HCl and HF are also generated. Ultra‑fine sodium bicarbonate can simultaneously achieve synergistic removal of multiple acid pollutants, perfectly aligning with the flue gas purification needs of waste incineration facilities.

3. Steel and Nonferrous Metal Smelting Enterprises: Processes like steel sintering, blast furnace operations, and nonferrous metal smelting release substantial sulfur‑containing flue gases. Ultra‑fine sodium bicarbonate’s rapid reaction kinetics and high utilization rate make it ideally suited to meet the dynamic desulfurization demands of the smelting industry.

4. Rubber and Plastic Foaming Product Manufacturers: Producers of PVC, EVA, rubber sponges, shoe soles, insulation boards, and other foamed products can utilize ultra‑fine sodium bicarbonate as a heat‑absorbing foaming aid, creating fine, uniform cellular structures that enhance softness, elasticity, and surface smoothness, thereby optimizing product quality.

5. Fine Chemical and Daily Chemical Enterprises: In applications such as detergent additives, abrasive ingredients for daily chemicals, and industrial cleaning agent formulations, ultra‑fine sodium bicarbonate leverages its fine particles to function as a mild abrasive, providing gentle polishing assistance.

Application Scenarios

1. Dry‑Process Flue Gas Desulfurization in Coal‑Fired Power Plants: Through dry‑spray injection into flue ducts, it rapidly reacts with SO₂ in flue gas to form sodium sulfate, achieving highly efficient desulfurization. Compared to traditional limestone‑gypsum methods, this approach is particularly suitable for small and medium‑sized plants or renovation projects with limited space, requiring no large‑scale equipment upgrades, short construction timelines, and quick results.

2. Flue Gas Purification in Waste Incineration: Waste incineration flue gases contain multiple acidic components including SO₂, HCl, and HF. Ultra‑fine sodium bicarbonate can simultaneously remove these multi‑component acid pollutants, delivering peak reaction efficiency within the 140–260°C temperature range, fully satisfying the purification needs of waste incineration flue gases and preventing excessive emissions of various acid pollutants.

3. Industrial Kiln and Metallurgical Flue Gas Treatment: For sulfur‑containing flue gases emitted from cement kilns, glass furnaces, steel sintering, blast furnaces, and other industrial kilns, ultra‑fine sodium bicarbonate desulfurization systems can be flexibly integrated into existing flue gas treatment workflows without requiring major equipment modifications. They adapt seamlessly to the dynamic production conditions of industrial kilns, ensuring stable compliance with emission standards.

4. Rubber and Plastic Foaming Production: As a heat‑absorbing foaming agent, it works in tandem with foaming aids to produce rubber, PVC, sponge, and other foamed products, leveraging its fine particles to create uniform, fine cellular structures that enhance softness, elasticity, and surface smoothness, thereby optimizing product quality.

5. Fine Daily Chemical and Cleaning Ingredient Formulation: Used in detergent additives, abrasive ingredients for daily chemicals, and industrial cleaning agent blends, it functions as a mild abrasive, improving product dispersibility and solubility while gently protecting skin and cleaned surfaces from potential damage.

Key Pain Points Addressed

1. High Investment and Operating Costs of Traditional Wet‑Process Desulfurization: Limestone‑gypsum wet desulfurization requires complex slurry preparation and wastewater treatment systems, involving substantial equipment investment, large footprints, and high operation and maintenance expenses. In contrast, ultra‑fine sodium bicarbonate dry desulfurization equipment requires only 30%–50% of the investment of wet‑process systems, produces no wastewater, and eliminates the need for subsequent wastewater treatment, significantly reducing overall operating costs and saving enterprises considerable capital and maintenance expenditures.

2. Low Reaction Efficiency of Conventional Particle‑Size Desulfurizing Agents: Ordinary particle‑size sodium bicarbonate suffers from limited specific surface area and insufficient contact with flue gas, making it difficult to improve desulfurization efficiency. Ultra‑fine sodium bicarbonate, after ultra‑fining, sees its specific surface area more than double, achieving desulfurization efficiencies exceeding 90%, substantially boosting reagent utilization rates, reducing consumption, and lowering usage costs.

3. Difficulties in Handling Desulfurization Byproducts and Heavy Environmental Pressures: Wet desulfurization generates large volumes of wastewater and solid waste, imposing high treatment costs and posing significant environmental risks. Ultra‑fine sodium bicarbonate dry desulfurization produces only dry powders, which can be directly collected for resource recovery in building materials, chemical manufacturing, and other sectors, achieving zero wastewater discharge and eliminating secondary pollution, helping enterprises avoid environmental liabilities while promoting resource circularity.

4. Challenges in Storing and Transporting Desulfurizing Agents: Ordinary sodium bicarbonate powder readily absorbs moisture and forms clumps, leading to blockages in feeding pipelines and inefficient transport. Ultra‑fine sodium bicarbonate, treated with special processes, resists moisture and caking, maintains excellent flowability, and is compatible with automated feeding equipment, effectively ensuring continuous, stable system operation and minimizing equipment failures and downtime.

Core Value

1. Cost Reduction and Efficiency Gains: When used as a dry‑process desulfurizing agent, Weifang Jiangchang Chemical’s ultra‑fine sodium bicarbonate achieves desulfurization efficiencies exceeding 90%, with dosages reduced to about one‑quarter of traditional calcium hydroxide adsorbents, significantly cutting reagent procurement costs. Meanwhile, the equipment investment and footprint required for dry desulfurization are only 30%–50% of those for wet methods, reducing enterprise capital outlays and site occupation, and markedly lowering overall operating costs.

2. Compliance and Environmental Protection: The product meets GB/T 1606 standards for industrial sodium bicarbonate and GB 1886.2 national standards for food‑grade sodium bicarbonate. The dry desulfurization process eliminates the need for slurry preparation and wastewater treatment, producing no wastewater or solid waste, helping customers comply with increasingly stringent environmental emission standards and avoid regulatory risks. Moreover, desulfurization byproducts can be recycled, turning waste into valuable resources and enhancing corporate environmental benefits.

3. Stability and Reliability: Founded in 2015, Weifang Jiangchang Chemical is a sole proprietorship limited liability company with a registered capital of RMB 16.5 million, occupying over 8,000 square meters, employing more than 120 staff, and maintaining ample inventory to ensure a steady and reliable supply of products. The company holds multiple utility model patents and has been certified as a national‑level technology‑based SME, guaranteeing dependable product quality and robust technical capabilities, providing customers with consistent raw material support.

4. Outstanding Performance: Product fineness spans from 300 mesh to 2000 mesh, with some specifications reaching 3200 mesh; total alkali content exceeds 99.0%, with loss on drying below 0.20%. Combining high reactivity, excellent dispersibility and flowability, along with moisture‑resistant and anti‑caking properties, it satisfies the demanding precision requirements of multiple industries, elevating the quality and performance of end products.

Frequently Asked Questions (FAQ)

Q1: What advantages does ultra‑fine sodium bicarbonate offer over ordinary sodium bicarbonate in flue gas desulfurization?
A: After ultra‑fining, the specific surface area of ultra‑fine sodium bicarbonate more than doubles, dramatically increasing its contact area with acidic gases in flue gas. This leads to desulfurization efficiencies exceeding 90%, far surpassing those of conventional particle‑size products. Additionally, its dosage is only about one‑quarter of traditional calcium hydroxide adsorbents, significantly reducing usage costs. Furthermore, the dry desulfurization process generates no wastewater or solid waste, making it more environmentally friendly.
Q2: What purity standards does ultra‑fine sodium bicarbonate meet?
A: The product’s total alkali content (expressed as NaHCO₃) ranges from 99.0% to 100.5%, with loss on drying not exceeding 0.20%. It complies with GB/T 1606 standards for industrial sodium bicarbonate and GB 1886.2 national standards for food‑grade sodium bicarbonate, ensuring reliable quality.
Q3: What packaging options are available for ultra‑fine sodium bicarbonate?
A: Standard packaging includes 25 kg woven bags, with custom options of 50 kg and ton‑bags (1000 kg) available to accommodate diverse customer purchasing and usage needs.
Q4: Can ultra‑fine sodium bicarbonate be stored long‑term?
A: After special processing, the product exhibits excellent moisture‑resistant and anti‑caking properties, showing no significant water absorption or caking under open‑environment conditions. Large‑tonnage storage allows for extended periods, ensuring stable product performance.