Case Study: Application of SS316 Multi-bag Filter in Chemical Production Line in Southeast Asia
Background
A chemical enterprise in Southeast Asia mainly engages in the blending and production of industrial cleaning agents and surface treatment agents. Its production line has long been plagued by solid particles and impurities during the transportation and recycling of raw materials, resulting in wear of downstream equipment, pipeline blockages, and a decline in the stability of product batches. Previously, the enterprise used single-bag filters and some domestic multi-bag equipment, but under continuous operation conditions, filter bags were replaced frequently, the pressure difference rose rapidly, and maintenance costs remained high.
Requirements and Challenges
The enterprise needs a liquid filtration equipment that can adapt to medium to large flow rates and operate continuously. Specific requirements include: the cylinder material should be able to withstand the chemical components in cleaning agents and surface treatment agents, and have good corrosion resistance; the filtration accuracy should be stable at 100um to intercept particles in raw materials and recycled liquids; the interface should match the existing 6-inch pipeline system to reduce the amount of renovation work; the equipment should be able to withstand a design pressure of 10bar and a working pressure of no less than 6bar to ensure the safe and stable operation of the system. In addition, the customer has clear requirements for delivery time and custom-made nameplates.
Solution
After multiple rounds of technical communication, the enterprise finally chose the JYMF-6P-316 type 6-bag bag filter. The equipment uses an SS316 stainless steel cylinder, with sandblasting surface treatment, a wall thickness of 5mm, a design pressure of 10 bar, a working pressure of 6 bar, inlet and outlet as 6-inch ANSI flanges, a bottom-in-bottom-out structure, and the sealing material is nitrile. Each device is equipped with 6 2# filter bags, with a filtration accuracy of 100um and a filter bag material of PP. At the same time, a nameplate was customized according to the customer's requirements to facilitate equipment identification and on-site management.
Application effect
After the equipment was put into operation, the particle interception effect on the production line of the enterprise was significantly improved. The 6-bag parallel structure provided a large filtration area, reducing the single-bag load, and the filter bag replacement cycle was significantly prolonged compared to before. The bottom-in-bottom-out layout reduced the number of pipe bends, and the system resistance decreased. The SS316 cylinder and sandblasting surface treatment showed good corrosion resistance in cleaning agents and surface treatment agents environments, and the appearance and structure of the equipment remained stable. The ordinary pressure gauge enabled operators to monitor pressure difference changes intuitively and arrange maintenance in a timely manner. The customer reported that the overall operation and maintenance costs were lower than before, and the stability of the finished product batches was improved.
Customer review
The equipment manager of this enterprise stated that the JYMF-6P-316 type 6-bag filter has a high degree of compatibility in terms of material, pressure rating, interface specifications and filtration accuracy with the actual working conditions. The installation and connection were smooth, and the operation was stable.
Summary
This case demonstrates that for the filtration requirements of corrosive liquids, medium flow rates, and continuous operation in chemical production, the multi-bag filter made of SS316 material, with 6 bags in parallel, 100um PP filter bags, and 6-inch ANSI flanges, can provide stable and reliable filtration performance. It has practical application value in extending the filter bag replacement cycle, reducing system resistance, and adapting to corrosive working conditions.