Pumps for the Chlor Alkali Industry
The chlor alkali industry uses electrolysis to produce chlorine, caustic soda, and hydrogen from purified brine. Pumping systems are involved throughout brine preparation, chemical treatment, product processing, and wastewater handling. Depending on the process, pumps may handle chloride-rich brine, hydrochloric acid, caustic soda, sodium hypochlorite, chlorinated liquids, and corrosive wastewater.
These applications require careful consideration of chemical compatibility, temperature, concentration, solids content, leakage control, flow rate, and head. Changyu provides corrosion-resistant pump solutions for different chlor alkali process duties, with pump configuration and wetted materials selected according to the actual operating conditions.
Chlor Alkali Industry Pumping Applications
Different sections of a chlor alkali plant handle very different fluids. Saturated brine containing salt mud, circulating electrolyte, high-temperature caustic soda with salt crystals, sodium hypochlorite, and hydrochloric acid all place different demands on the pump.
For this reason, Changyu selects pumps according to the actual process duty, not simply according to the chemical name. Solids content, temperature, chloride concentration, crystallization, leakage requirements, and the installation position of the pump all affect the final selection.
Changyu’s chlor alkali pump solutions cover key process sections including:
Brine Purification / Electrolysis / Caustic Soda Evaporation and Concentration / Chlorine Gas and Hypochlorite Handling / Hydrochloric Acid Synthesis
Brine Purification
Ứng dụng:
Brine purification is one of the first stages of pumping in chlor alkali production. Saturated brine may contain a certain amount of salt mud and other suspended impurities before and during purification. The pump therefore needs to cope with both corrosion and particle wear rather than treating the liquid as a clean chemical solution.
For brine containing suspended salt mud, the UHB Series corrosion-resistant slurry pump is a suitable option. The UHB series can handle corrosive slurry with solids content of less than 45%, making it more appropriate for this type of mixed liquid-solid service than a conventional clean-liquid chemical pump.
Recommended Pumps
Main selection factors:
- Khả năng chống mài mòn
- Saturated brine concentration
- Salt mud and suspended solids
- Hàm lượng chất rắn
- Flow rate and head
- Chloride corrosion
Bơm bùn công nghiệp series UHB
Bơm chống ăn mòn series UHB bằng nhựa polyethylene mật độ cao (UHMWPE)
Bơm bùn mài mòn dòng UHB
Electrolysis
Ứng dụng:
The electrolysis section handles anolyte and catholyte containing chloride ions and, depending on the process location, free chlorine. Leakage control becomes particularly important when transferring aggressive electrolyte.
For these duties, a magnetic-drive pump can be considered where zero-leakage or reduced leakage is required. The final pump selection should be based on the electrolyte composition, temperature, flow, head, and material compatibility.
Bơm khuyến nghị:
Main selection factors:
- Chloride concentration
- Free chlorine content
- Nhiệt độ
- Yêu cầu về rò rỉ
- Flow rate and head
- Wetted material compatibility
Bơm chuyển axit sunfuric dòng CYQ
Bơm hóa chất truyền động từ | Bơm chuyển axit lót PTFE CYQ
Bơm ly tâm truyền động từ – Dòng CYQ
Caustic Soda Evaporation and Concentration
Ứng dụng:
The caustic soda concentration section presents a different pumping challenge. The liquid can be hot and may contain NaCl crystals, so the pump must withstand both elevated temperature and potential crystallization or solids-related wear.
For high-temperature caustic soda circulation, Changyu recommends the CYG Series High Temperature Chemical Pump, with a working temperature of up to 150°C according to the pump configuration.
This application is different from ordinary caustic soda transfer. The pump is selected not only for NaOH compatibility, but also for the temperature and salt-crystal conditions in the circulation system.
Bơm khuyến nghị:
Main selection factors:
- NaOH concentration
- Nhiệt độ hoạt động
- NaCl crystal content
- Circulation flow
- Required head
- Tính tương thích của vật liệu
Bơm hóa chất chịu nhiệt độ cao dòng CYG
Chlorine Gas and Hypochlorite Handling
Ứng dụng:
Chlorine handling involves conditions that differ from ordinary liquid chemical transfer. Wet chlorine and sodium hypochlorite require materials with good resistance to chlorine-containing and oxidizing media.
For sodium hypochlorite liquid handling, the FYH Series fluoroplastic submerged pump can be considered.
Bơm khuyến nghị:
Main selection factors:
- Wet chlorine or hypochlorite concentration
- Oxidizing conditions
- Nhiệt độ
- Installation depth
- Khả năng chống ăn mòn
- Gas-liquid conditions
Máy bơm bán chìm bằng nhựa fluorocarbon dòng FYH: Máy bơm hóa chất hiệu suất cao, chống ăn mòn
Máy bơm chìm chống hóa chất dòng FYH
Hydrochloric Acid Synthesis
Ứng dụng:
Hydrochloric acid synthesis and handling require pumps that can withstand hydrochloric acid and associated chloride-rich conditions. Conventional metal pump materials may not provide sufficient corrosion resistance for these duties.
For hydrochloric acid transfer, a fluoroplastic-lined centrifugal pump is a suitable configuration where the process requires high corrosion resistance.
Bơm khuyến nghị:
Main selection factors:
- Nồng độ axit clohydric
- Nhiệt độ
- Lưu lượng
- Trưởng phòng
- Khả năng chống ăn mòn
- Lining and seal compatibility
Bơm ly tâm fluoroplastic series CYF
Bơm ly tâm chuyển tải axit clohydric series CYF
Bơm ly tâm hóa chất chuyển axit series CYF
How to Select a Pump for the Chlor Alkali Industry
The chemical name alone is not enough to determine the correct pump. Two pumps handling the same chemical can have completely different requirements when concentration, temperature, solids content, or installation conditions change.
- The concentration of brine, NaOH, HCl, or sodium hypochlorite affects material compatibility and should be confirmed before selecting the pump.
- Temperature is particularly important for concentrated caustic soda and evaporation processes. Higher operating temperatures can change material performance and pump operating conditions.
- Salt mud and NaCl crystals introduce a wear component that does not exist in clean chemical liquid transfer. Pump construction and hydraulic design should therefore be considered together with corrosion resistance. For aggressive electrolyte and other hazardous chemical liquids, leakage control can influence the pump configuration. Magnetic drive pumps can be considered where this requirement is significant.
- Some applications require a submerged pump rather than a conventional horizontal centrifugal configuration. Sodium hypochlorite handling is one example where installation conditions can affect the appropriate pump design.
- The required flow rate and head determine the hydraulic performance needed from the pump.
These parameters should be confirmed together with the chemical and temperature conditions before final selection.
Pump Selection by Chlor Alkali Process
| Chlor Alkali Process | Môi chất bơm | Main Pumping Challenge | Máy bơm được khuyến nghị |
|---|---|---|---|
| Brine Purification | Saturated brine + salt mud | Corrosion + suspended solids + wear | Dòng UHB |
| Electrolysis | Anolyte/catholyte | Chloride + free chlorine + leakage control | Magnetic Drive Pump / CYQ Series |
| Caustic Soda Evaporation | Hot concentrated NaOH + NaCl crystals | High temperature + crystallization | Dòng CYG |
| Chlorine & Hypochlorite Handling | Wet chlorine/sodium hypochlorite | Oxidation + chloride corrosion | FYH Series |
| Hydrochloric Acid Synthesis | Hydrochloric acid / HCl | Ăn mòn hóa học mạnh | Fluoroplastic-Lined Pump / CYF Series |
Note: The pump should be selected according to the actual process conditions rather than assigning the same pump type to every chlor alkali application.
Nếu bạn không chắc chắn cách lựa chọn, vui lòng liên hệ với đội ngũ của chúng tôi, và chúng tôi sẽ phản hồi trong vòng 24 giờ.
Câu hỏi thường gặp
Liên hệ với chúng tôi
Các giải pháp bơm linh hoạt, hiệu quả và hoàn toàn tùy chỉnh.
Bạn đang tìm kiếm giải pháp bơm hoàn hảo phù hợp với nhu cầu cụ thể của mình? Đội ngũ chuyên gia của chúng tôi cung cấp các giải pháp bơm ly tâm được thiết kế riêng, phù hợp với loại chất lỏng, điều kiện vận hành và yêu cầu dự án của bạn. Hãy liên hệ ngay hôm nay để nhận tư vấn và báo giá riêng cho bạn!
Gửi yêu cầu của bạn ngay bây giờ
Recommended Chlor Alkali Industry Pumps
Below are selected pump models for chlor alkali production and related chemical transfer duties. Each pump is suited to different process conditions, such as corrosive brine containing solids, high-temperature caustic soda, sodium hypochlorite, electrolyte, and hydrochloric acid. The final pump selection depends on the medium, concentration, temperature, solids content, flow rate, head, installation conditions, and leakage requirements. If you are not sure which pump is suitable for your process, liên hệ với chúng tôi ngay.
