Page 48 - THE GLOBAL LEADER IN MEMBRANE SEPARATION INDUSTRY

PART 02 Proficient in membrane technology and
customized processes as needed

Chlor-alkali Chemical Industry Application points and main process

JIUWU HI-TECH's inorganic membrane brine purification solution (CBS process) exists mature Organic membrane process with Organic membrane process
Ceramic membrane process
technology and can provide stable and reliable high-quality brine for a long time. It has been used preconditioner without preconditioner
in ion membrane caustic soda equipment with a cumulative capacity of 17.5 million tons, Project Ca and Mg removal Remove Mg first and then Ca Remove Ca and Mg at same time
simultaneously
implemented 100+ projects and customers successfully, and exported to Europe, America,
Refining reaction no yes no
Southeast Asia, South America and other places, it has become the preferred process for chlor-alkali
Pickling regeneration
≥15 days 10~15days 2~3days
enterprises. The CBS process utilizes the characteristics of ceramic membrane inorganic materials cycle
and adopts an efficient "cross-flow" filtration method, which enables its application in the brine Equipment material Ti CS/HRL CS/HRL
refining process to have effects and advantages that are difficult to achieve with other refining and Equipment lifetime ≥20 years ~10years ~10years
filtration technologies. Application salt types include well salt, sea salt, lake salt, underground Filter pore size 50nm 200~500nm 200~500nm
brine, and imported salt by-product salt, etc. Salt water quality Quite stable Initial instability Initial instability
Membrane tube
No special requirements 0.5% NaHSO 3 soak 0.5% NaHSO 3 soak
maintenance
Application points and main process
Ca and Mg upside-down salt, well
Ca and Mg upside-down salt is not
All kinds of salt are suitable and salt and fine brine are not
Raw salt adaptability can be mixed or used alone suitable, high salt stability suitable, high salt stability
Salt water refining (high-quality food salt, chlor-alkali salt): dissolved salt + refining reaction requirements requirements
technology + ceramic membrane technology + post-processing technology.
Membrane denitrification: pretreatment + nanofiltration membrane salt separation technology. Advantages of membrane denitrification
Advantages of CBS process
· Accurate online residual chlorine detection system ensures that free chlorine in the system is zero；
· Efficient heat exchange process improves system heat utilization efficiency and ensures constant
· Short process, no pretreatment system, especially suitable for organic membrane transformation projects;
inlet water temperature；
· Resistant to pollution, can adapt to high magnesium raw salt, and low requirements on the quality of raw salt; · High-quality nanofiltration membrane materials ensure the rejection of sodium sulfate under high
· Inorganic materials, more than 5 years lifetime under high pressure; salt concentrations；
· Stable membrane material and filtration accuracy, high mechanical strength, and high temperature and · Qualified fresh salt water is directly transported to the nanofiltration membrane equipment, greatly
reducing system energy consumption；
pressure resistance;
· The system can adapt to fluctuations in production materials, ensure the quality of water entering
· Fully enclosed operation, no salt spray, easy to achieve 6S management;
the nanofiltration membrane, and extend the life of the nanofiltration membrane；
· Strong regeneration ability and high flux recovery rate;
· Pretreatment + membrane filtration unit module integration；
· All-titanium equipment, more than 20 years lifetime, and without any maintenance costs;
· With high nitrate brine post-treatment technology, according to demand, can obtain glauber salt,
· Highly automated, it can realize one-click start and stop and unattended operation. sodium sulfate powder, gypsum, etc.

800t/h brine refining system for a food salt manufacturer in Jiangsu Province
A brine refining and membrane denitrification system used by a certain enterprise in Anhui Province
for an annual production of 60000 t/d tons of ionic membrane caustic soda
41 42