1. Product Overview & Custom Plant Solutions
State-of-the-art chemical engineering combined with competitive Chinese manufacturing capabilities to deliver high-yield Sodium Carbonate production plants worldwide.
We provide fully customized Sodium Carbonate (Soda Ash) Production Lines and turnkey EPC solutions for global chemical investors. All plants are tailor-designed based on local raw material conditions, utility parameters, land space, and regional industrial standards.
Our production lines manufacture light soda ash and dense soda ash widely used in glass manufacturing, detergents, water treatment, metallurgy, and paper industries. We support two mainstream processes: Solvay Ammonia-Soda Process and Hou’s Combined-Soda Process (with ammonium chloride by-production).
From process design, equipment fabrication, factory testing, and export shipping to on-site installation, commissioning, and operator training, we deliver one-stop industrial project services for overseas greenfield and expansion soda ash projects.
Light Soda Ash Production
Typically used in chemical processing, detergent formulation, and water treatment where quick dissolution is required. Bulk density ranges from 0.5 to 0.6 g/cm³.
Dense Soda Ash Production
Highly demanded by flat glass and container glass manufacturers due to its grain size match with silica sand, preventing segregation. Bulk density ranges from 0.9 to 1.0 g/cm³.
By-Product Management
Integrated systems for ammonium chloride recovery (Hou's Process) or calcium chloride processing (Solvay Process) to maximize the economic returns of your chemical complex.
2. Required RFQ Information for Overseas Clients
To obtain an accurate technical proposal and formal quotation, please confirm the following project parameters before inquiry.
Capacity & Grade
Annual production capacity target (e.g., 30,000 to 100,000+ tons per year) and desired product specification (Light/Dense soda ash purity and regional standards like ISO or REACH).
Raw Materials & Process
Detailed chemical analysis of local raw materials (crude salt, brine, or limestone) to determine the selection between the Solvay Process and Hou's Process.
Site Utilities & Power
Local utilities data including grid voltage and frequency (50Hz/60Hz), steam availability, cooling water capacity, compressed air parameters, and geological conditions.
Automation & System
Specify the requested level of automation: cost-effective semi-automatic control systems or high-end fully integrated DCS (Distributed Control System) architectures.
Certifications & Codes
Compliance requirements such as CE, PED pressure vessel standards, ASME code stamps, explosion-proof classifications, or specific local environmental regulations.
Scope & Logistics
Project scope preference (pure equipment supply vs. full EPC turnkey including civil design and steel structures) and preferred Incoterms (FOB, CIF, DAP) with timeline goals.
3. Technology Processes: Solvay vs. Hou's
Choosing the right chemical pathway is critical to the profitability and sustainability of your soda ash plant. We construct both world-class processes.
Utilizes salt brine and limestone as the primary raw materials. Ammonia is recycled within the process, making it highly self-contained and cost-effective where calcium carbonate is abundant.
- Raw Materials: Salt brine, limestone, and metallurgical coke.
- By-Products: Calcium chloride (CaCl2) solution or solid flakes.
- Energy Profile: High steam consumption for ammonia recovery distillation.
- Environmental Footprint: Requires proper management of distiller waste liquids.
- Purity & Sizing: Excellent control over crystal structure for premium Dense Soda Ash.
Integrates sodium carbonate production with ammonium chloride production. By eliminating the limestone calcination step, it dramatically reduces CO2 emissions and solid waste discharge.
- Raw Materials: Crude salt, carbon dioxide (CO2), and ammonia (NH3).
- By-Products: High-value Ammonium Chloride (NH4Cl) agricultural fertilizer.
- Energy Profile: Lower overall fuel consumption, highly integrated with ammonia plants.
- Environmental Footprint: Zero calcium chloride waste discharge, highly eco-friendly.
- Economic Yield: Double product revenue streams (Soda Ash + Fertilizer).
4. Complete Production Line Configuration
Modular plant configurations designed for extreme durability, maximum yield, and low maintenance overheads.
4.1 Solvay Ammonia-Soda Process Modules
Brine Purification System
Salt dissolving, chemical calcium and magnesium precipitation, clarification, and high-efficiency filtration to produce clean saturated brine.
Limestone Calcination
Vertical or rotary lime kilns with automated charging, CO2 gas recovery/cooling units, and continuous quicklime slaking systems.
Ammonia Absorption & Carbonation
Core reaction towers (carbonation columns) engineered with internal cooling coils to control exothermic reactions and absorb gaseous ammonia.
Bicarbonate Filtration
Vacuum drum filters or belt filters designed to separate solid sodium bicarbonate crystals from the corrosive mother liquid efficiently.
Soda Calcination System
Steam-heated or gas-fired rotary calciners to thermally decompose sodium bicarbonate into high-purity light sodium carbonate.
Ammonia Recovery & Distillation
Distillation columns using lime milk to recover ammonia from the mother liquid, minimizing chemical makeup costs and emissions.
4.2 Hou’s Combined-Soda Process Modules
Cold Crystallization Unit
Industrial crystallizers operating at low temperatures to precipitate ammonium chloride from the carbonated mother liquor.
Salt Precipitation & Salting-Out
Salt-adding systems utilizing solid sodium chloride to decrease ammonium chloride solubility, maximizing fertilizer yields.
Ammonium Chloride Finishing
Dedicated drying, cooling, and anti-caking treatment lines to package high-quality agricultural-grade ammonium chloride.
4.3 Auxiliary Systems & Core Configurations
Densification & Cooling
Hydration reactors and secondary dryers to convert light soda ash to dense soda ash through controlled recrystallization.
DCS Centralized Control
Siemens or PCS7-based Distributed Control Systems providing real-time pressure, temperature, flow rate, and safety monitoring.
Finishing & Packaging
High-precision vibrating screens, electromagnetic iron removers, storage silos, and automated 25–50kg and ton-bag packing lines.
5. Core Material & Electrical Configuration
Industrial chemical environments are highly corrosive. We utilize premium metallurgy and global-standard electrical components to ensure a 20+ year plant lifespan.
| Equipment Type | Corrosive Medium / Challenge | Standard Material Configuration | Premium Upgrade Options |
|---|---|---|---|
| Carbonation & Absorption Towers | Ammoniacal brine, CO2 gas, high chloride levels | Carbon steel with thick anti-corrosion lining | Solid Titanium alloy or Duplex Stainless Steel (2205) |
| Distillation & Recovery Columns | Hot, highly alkaline ammonium chloride slurry | Cast iron sections or lined carbon steel | Titanium Grade 2 clad plates for core heat exchange zones |
| Centrifuges & Rotary Filters | Wet sodium bicarbonate, mechanical friction | 316L Stainless Steel | Super Duplex Stainless Steel (2507) |
| Rotary Calciners & Dryers | High thermal stress, trace corrosive gases | Boiler-grade carbon steel (Q345R) | 304 / 316L Stainless Steel product contact zones |
| Piping & Valve Systems | Continuous high-velocity slurry flow | FRP (Fiberglass Reinforced Plastic) or lined carbon steel | Titanium valves, PTFE-lined piping networks |
| Electrical & Control Systems | Chemical dust, voltage fluctuations | Schneider / ABB switchgear, IP55 enclosures | Siemens DCS, explosion-proof motors (Ex d IIB T4) |
All motor drives, pumps, and control systems are custom-wound and certified to match the destination country's electrical grid (e.g., 380V/415V/440V at 50Hz or 60Hz), ensuring seamless local commissioning and grid compliance.
6. Full Project Customization & Delivery Workflow
We follow a standardized international EPC (Engineering, Procurement, and Construction) framework to guarantee transparent execution and on-time project handover.
Step 1: Technical Inquiry & Evaluation
Clients submit raw material reports and site layout data. Our chemical engineering team conducts a feasibility study to verify process parameters.
Step 2: Solution & Quotation Confirmation
We deliver preliminary PFD (Process Flow Diagrams), PID (Piping & Instrumentation Diagrams), CAD plant layouts, and a comprehensive equipment list with a formal quote.
Step 3: Formal Contract Signing
Finalization of supply scope, performance guarantees (purity, capacity, energy consumption limits), acceptance standards, and warranty terms.
Step 4: Standard International Payment Terms
30–40% advance payment to initiate engineering design and material procurement; 50–60% balance payment before shipment after FAT; 5–10% retention. L/C is supported.
Step 5: Factory Fabrication & FAT
Precision manufacturing of reactors, towers, and auxiliary equipment. We conduct pressure tests and loop checks before Factory Acceptance Testing (FAT).
Step 6: Export Packaging & Shipping
Modular packing in heavy-duty steel frames and fumigated plywood boxes. Full export documentation provided (B/L, CO, PED certificates, operation manuals).
Step 7: On-site Installation & Commissioning
Our field engineers supervise civil construction alignment, equipment erection, piping connection, and lead the 72-hour continuous performance test run.
Step 8: After-Sales & Warranty
12-month mechanical warranty. We maintain a permanent stock of critical spare parts and provide remote technical support for plant optimization.
7. Overseas Project Risk Avoidance Tips
Building a chemical plant overseas involves complex logistics and regulatory environments. Follow these guidelines to secure your investment.
Prioritize Performance Metrics Over Low Initial Cost
Soda ash production is highly energy-intensive. A low-cost plant design with poor heat recovery or low-grade insulation will result in massive operational costs. Insist on contractually binding energy usage parameters (steam and electricity per ton of soda ash).
Insist on Custom Engineering Designs
No two raw salt sources are identical. Raw salt with high sulfate or magnesium content requires specialized purification processes. Standardized, "off-the-shelf" designs will lead to scale buildup, reduced capacity, and frequent shutdowns.
Ensure Strict Code Compliance
Pressure vessels such as carbonation towers, steam calciners, and flash tanks must comply with local safety standards (e.g., ASME for the Americas, PED/CE for Europe). Verify that the Chinese manufacturer holds valid ASME U-Stamp or CE certificates before fabrication starts.
Secure Comprehensive Documentation & Spare Parts
Request all drawings, P&IDs, wiring diagrams, and PLC code comments in English. Additionally, purchase a 2-year operational spare parts package (seals, filter cloths, valves, and wear parts) to avoid long customs clearance delays during emergency shutdowns.
8. Downstream Industrial Applications
Soda Ash is a cornerstone of modern manufacturing. Our plants are designed to meet the strict quality standards required by these leading industries.
Glass Manufacturing
Acts as a fluxing agent, reducing the melting temperature of silica sand. Essential for float glass, container glass, and high-tech solar glass production.
Detergents & Soaps
Functions as a builder to soften water by binding calcium and magnesium ions, greatly enhancing the cleaning efficiency of laundry powders.
Water Treatment
Used to adjust pH levels in municipal and industrial wastewater facilities, neutralizing acidic waste streams safely and economically.
Metallurgy & Paper
Used in the desulfurization of iron and steel, alumina production, and in the chemical pulping process of paper manufacture.
Frequently Asked Questions
Get answers to the most common questions regarding custom-ordering soda ash production plants from China.