31%-33% Hydrochloric Acid Production Equipment | Full Chlor-Alkali EPC Plant

For chemical factory investors, metallurgical processing plants and PVC manufacturers, stable supply of high-concentration hydrochloric acid is a core raw material guarantee. Many small-scale acid synthesis devices have defects such as unstable concentration, high power consumption and frequent tail gas overflow. Chlory has 20 years of experience in chlor-alkali complete set equipment R&D and manufacturing, providing integrated ion membrane electrolysis supporting hydrochloric acid production system, which can stably produce 31%~33% high-purity hydrochloric acid while co-producing caustic soda, liquid chlorine and sodium hypochlorite to maximize project revenue.

Overview of Our Ion Membrane Chlor-Alkali & HCl Synthesis Technology

Traditional diaphragm and mercury electrolysis equipment have been phased out in most regions due to heavy pollution and high energy consumption. All our production lines adopt mature ion-exchange membrane electrolysis technology, which is the mainstream clean production route recognized by global chlor-alkali enterprises.

One complete set of skid-mounted chlor-alkali unit can simultaneously output multiple core chemical products: 32%/50% liquid caustic soda, 99% solid caustic flake, 99.5% liquid chlorine, 31~33% high-purity hydrochloric acid, 15% sodium hypochlorite solution. These finished chemicals cover raw material demands of alumina smelting, papermaking, textile printing, pesticide synthesis and industrial water treatment industries, helping customers resist single product market price fluctuation risks.

Complete System Composition & Step-by-Step Production Flow

The whole production line is divided into 9 core processing units, each matched with corrosion-resistant special materials and independent monitoring sensors, connected to the central DCS cabinet for one-screen unified control.

List of All Core Process Units

Linear Production Flow Chart

Raw Industrial Salt → Saturated Brine Preparation → Primary Precipitation Purification → Resin Tower Deep Refining → Ion Membrane Electrolysis

• Anode side output chlorine: Cooling & drying → split into liquid chlorine finished product / raw material for hydrochloric acid synthesis
• Cathode side output hydrogen: Washing & compression → feed graphite synthesis furnace
• Cathode generated 32% NaOH: Direct filling / multi-effect evaporation concentration / flake solidification

Electrolysis Core Chemical Reaction Principle

Cation exchange membrane only allows sodium ions to pass through, blocking chlorine and hydroxide cross-reaction to guarantee high purity of all products.

1. Total reaction: 2NaCl + 2H₂O = 2NaOH + Cl₂↑+ H₂↑
2. Anode oxidation: 2Cl⁻ - 2e⁻ = Cl₂↑
3. Cathode reduction: 2H₂O + 2e⁻ = H₂↑+ 2OH⁻

Finished Product Concentration & Downstream Application Matching

All co-produced chemicals from one chlor-alkali line have fixed qualified indicators, customers can adjust production proportion via DCS system according to local market sales demand.

Core Technical Advantages of Our Hydrochloric Acid Production Line

We compare our equipment with traditional diaphragm electrolysis devices and list practical cost & safety advantages that factory investors care most about.

1. Low Energy Consumption & High Raw Material Utilization

Our zero-pole distance titanium anode electrolyzer greatly reduces cell voltage. Power consumption per ton of finished caustic soda is controlled at around 2000 kWh, far lower than old-fashioned equipment. Ordinary industrial salt with purity above 89% can be used as raw material, no need to purchase high-purity refined salt, cutting monthly raw material expenditure obviously. Current efficiency of electrolytic cell reaches 95%~96%, almost no brine waste.

2. Green Clean Production, Zero Hazardous Waste

Different from mercury process with mercury pollution and diaphragm process producing asbestos waste, ion membrane technology has no toxic waste discharge. All light brine and washing wastewater are recycled after neutralization treatment, fully meeting global industrial environmental emission standards, easy to pass factory environmental assessment inspection.

3. Fully Automatic DCS Unattended Operation

The whole line is equipped with real-time sensors for temperature, pipeline pressure, gas concentration and liquid level. Once chlorine leakage, hydrogen overpressure or abnormal temperature occurs, the system will trigger interlock emergency shutdown automatically to avoid safety accidents. Only 1~2 on-duty operators are required for a complete production line, all parameter adjustment, finished product proportion switching can be completed on central control screen, greatly reducing manual labor cost.

4. Corrosion-Resistant Long Service Life Configuration

All parts contacting chlorine, hydrochloric acid and concentrated alkali adopt anti-corrosion special materials: titanium alloy electrolyzer plates, graphite synthesis furnace, nickel evaporation tubes, FRP brine pipelines, PVDF acid delivery pumps. Key consumable ion membrane normal service life reaches over 12 years, reducing frequent shutdown maintenance loss.

5. Customized Skid-Mounted Modular Design

We do not sell fixed standard machines only. According to customers’ annual output target, factory plant area, local power grid voltage and raw salt quality index, we design exclusive layout scheme. Small and medium capacity units are pre-assembled on skids in workshop, after delivery to customer site, only connect power, salt pipeline and water supply pipeline to start trial run within one week, shortening factory construction cycle greatly.

Standard Electrolyzer Model & Customized Service Parameters

BSH-H Series Ion Membrane Electrolyzer Main Specifications

Whole Line Customization Support List

Matching Core Equipment Configuration (100,000 Tons Annual Caustic Project Reference)

We take the mainstream medium-capacity project as an example to list complete supporting equipment for customers’ project budget reference.

Why Choose Chlory As Your Chlor-Alkali & Hydrochloric Acid EPC Supplier

1. Professional Manufacturer Not Trading Company We own independent equipment processing factory and chemical engineering design team, 20 years focused on chlor-alkali electrolysis and supporting acid synthesis equipment, all core parts self-produced to control quality and delivery cycle.
2. Full EPC One-Stop Service From brine refining scheme design, electrolyzer production, graphite synthesis furnace assembly to on-site installation guidance and staff operation training, we provide full-process turnkey service without third-party coordination trouble.
3. Flexible Capacity Upgrade Design All standard skid units reserve expansion interface. If customers later expand production scale, only add electrolyzer modules instead of replacing the whole set of equipment, saving secondary investment cost.
4. Global Localized After-Sales We arrange professional chemical engineers to overseas project sites for equipment commissioning and fault troubleshooting, not only remote online technical support. Long-term spare parts supply channel guarantees continuous factory operation.
5. Complete Compliance Document Support Provide full set equipment inspection reports, pressure vessel certificates, material test files, convenient for customers to complete local industrial and environmental filing procedures.

Conclusion

For chemical plant investors who plan to produce high-purity 31~33% hydrochloric acid together with multiple chlor-alkali co-products, ion membrane integrated production line from Chlory is a cost-effective and safe long-term solution. Our equipment covers small startup factories and large chemical park mass production demands, all production capacity and product proportion can be customized according to regional market sales situation.

If you have clear annual output target, factory plant drawing and local industrial salt parameters, send relevant information to our engineering team, we will draw exclusive process layout diagram and detailed cost budget for free within 24 working hours.

Boasting 25 years of professional industry experience in production and supply, Chlory factory delivers premium,cost-effective chemical products with reliable quality. Worldwide exported to more than 50 countries, including Italy, USA, Saudi, Africa and other countries and some foreign companies are our agents locally. Equipped with fully automatic production systems and scientific modular production line design, we achieve stable output, high efficiency and low energy consumption while strictly complying with industrial standards. Different from ordinary manufacturers, Chlory provides flexible customized services tailored to diverse customer needs on product specifications, packaging and solutions. With direct factory pricing and optimized production processes, we help clients cut procurement costs and obtain high-quality, stable chemical supplies with comprehensive professional support.