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Help CenterAutomatic Hydrochloric Acid Equipment With NACL> 89% Salt Requirement, Less Investment on Salt
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Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd. is a professional chemical equipment manufacturer based in Tianjin, China. We supply the Automatic Hydrochloric Acid Equipment that is specifically engineered to run with salt containing NaCl above 89%, so you can lower your raw material cost and still obtain a stable hydrochloric acid output. This equipment responds to the growing demand for cost-efficient acid production in both domestic and international markets.
Unlike conventional hydrochloric acid systems that require high-purity refined salt, our automatic equipment is designed with a tolerant reaction section. Salt is dissolved and purified in a pre-treatment tank, and the controlled removal of impurities protects the reactor and absorption tower from accelerated corrosion. The PLC-based control system constantly adjusts the salt feed, acid pump speed, and cooling water flow, ensuring that even salt with 89% NaCl can produce hydrochloric acid at the concentration you set. As a result, customers can purchase industrial salt from multiple suppliers and experience significant savings on salt purchasing.
The main features of this equipment include:
Low purity salt compatibility: Specifically accepts salt with NaCl ≥ 89%, avoiding the premium price of refined salt.
Full automatic control: PLC and touch screen manage the process from salt dissolving to acid storage, reducing manual operation errors.
High yield absorption: A two-stage absorption tower increases the contact area between hydrogen chloride gas and water, thus raising the acid yield per unit of salt.
Corrosion resistant material: Key parts are made from graphite blocks, acid-resistant alloy, and polypropylene, all selected for long-term hot acid service.
Energy saving process: The heat released during HCl absorption is partly recovered to warm the dissolving tank, lowering the need for external steam.
Compact and modular: The skid-mounted assembly reduces plot area and allows quick installation in most workshops.
The following table summarizes the basic technical parameters. Final values will be customized according to your raw salt analysis and target acid concentration.
| Parameter | Specification |
| Raw material salt purity | NaCl ≥ 89% |
| Control system | PLC with color touch screen, automatic / manual mode |
| Acid concentration output | Customizable in range of 20% to 36% HCl |
| Reaction material | Graphite, modified alloy, PP lining |
| Installation | Skid-mounted or on-site assembled |
| Production capacity | Customized per customer requirement |
| Exhaust gas treatment | Integrated acid mist scrubber |
The core working principle is quite straightforward. Industrial salt is first dissolved in a brine tank, and the brine is then pumped into a salt converter. Sulfuric acid is added to release hydrogen chloride gas, which is cooled and then absorbed by water in the absorption tower. The PLC reads signals from a density meter, a pressure transmitter and a temperature sensor. It compares them with the set values and adjusts the automatic valves to maintain the product concentration with minimal fluctuation. The whole line is closed with a negative-pressure system, which effectively prevents acid gas leakage and keeps the working environment cleaner.
For a hydrochloric acid producer, this automatic equipment offers very practical benefits:
Direct salt cost reduction: Using salt with 89% purity instead of 99% refined salt can cut the raw material budget by 10% to 30% depending on the local market. The exact figure is affected by your sourcing area and freight cost.
Lower labor intensity: Since the equipment runs automatically, one operator can supervise the entire process from a control room or even from a remote workstation with the optional SCADA connection.
Consistent product quality: The automatic valve control keeps acid concentration stable, which helps your downstream process, such as pickling or chemical synthesis, maintain steady quality parameters.
Fewer interruptions: The feed control prevents salt bridging and nozzle clogging. The reactor design also reduces the accumulation of sulfate sludge, extending the operating cycle between cleans.
Hydrochloric acid produced by this equipment is widely used in steel pickling, metal surface treatment, water treatment, oil field acidizing, chemical reagents, and many other industrial applications. The equipment can be configured to produce acid of multiple concentration levels on demand. This flexibility enables a small plant to serve several customers with different quality requirements. By adding an optional distillation or purification module, higher-grade acid can be produced as well.
As a manufacturer, Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd. has shipped chemical processing equipment to North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, Western Europe, and the domestic Chinese market. We are certified under, and each hydrochloric acid equipment unit goes through rigorous inspection and water pressure testing before delivery. Our factory in Tianjin is close to one of the busiest shipping ports in China, which simplifies container transport and reduces export logistics costs for overseas buyers.
We believe the combination of lower salt purity tolerance, automatic process control, and robust material selection makes this product a dependable investment. Feel free to contact us with your required daily capacity, available salt analysis, and local utility conditions. Our engineering team will prepare a detailed layout and a transparent quotation for you within a short time. We look forward to being your long-term partner for hydrochloric acid production equipment.
Frequently Asked Questions
Q1: Can this equipment use salt with a purity lower than 89%?
No, the standard design is based on salt containing at least 89% sodium chloride. If you have lower-grade salt, we can discuss whether a pre-treatment module such as a sulfate removal unit should be added. Please send us the impurity analysis for an accurate evaluation.
Q2: What is the daily production range of this system?
The capacity is fully customizable. We have engineered systems from 2 tons per day to 50 tons per day of hydrochloric acid. During the inquiry stage, we will ask for your expected output and then size the reactor and absorption tower accordingly.
Q3: Does the equipment need a special building or foundation?
No. The skid-mounted unit can be installed on a flat concrete floor. The only site requirements are basic drainage, electrical power, and fresh water. An open-sided shelter is recommended when the unit is placed outdoors.
Q4: How much floor space is needed?
Floor space depends on the capacity and the layout of the auxiliary items. For a typical 10-ton-per-day unit, the main equipment occupies approximately 40 to 60 square meters. We always supply a dimension drawing for your civil work.
Q5: Is the control system easy for non-professional operators to learn?
Yes. The touch screen shows a simplified process diagram and the operator only needs to set the target acid concentration. Automatic mode keeps the key parameters within their safe limits. The user manual is written for operation personnel with basic equipment training.
Q6: How long does the equipment last before major overhaul?
Service life depends on operating temperature, acid concentration, and the quality of raw salt. With correct operation and a regular cleaning schedule, the main equipment can be used for many years before major replacement. Periodic inspection of graphite blocks and pipe joints is recommended twice a year.
Q7: Can you provide on-site installation and start-up support?
Yes. We can send engineers to supervise installation and start-up. The cost for international travel is quoted separately. Alternatively, we can provide remote guidance through video calls and provide detailed drawings for your local technicians.
Q8: What after-sales service is included?
The standard after-sales package includes a 12-month warranty, technical support by e-mail or phone, and access to spare parts. Extended maintenance contracts and emergency dispatch service are available upon request.
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