Ceramic membrane filtration technology
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This post was last edited by sunjl1981 on 2013-1-6 at 20:13. Ceramic membrane filters are used in the brine preparation process to filter out magnesium hydroxide, calcium carbonate, and other insoluble impurities generated during brine purification. This is a new saltwater preparation process that can replace the Dor barrel and sand filter used in traditional saltwater processes, or it can substitute for the floating clarification tank and Gore membrane filter. The simple process flow is as follows: Saturated brine coming out of the salt dissolving tank is mixed with sodium carbonate and sodium hydroxide before being fed into the reaction tank. After full reaction, it enters the crude brine circulation tank, from where it is pumped (at a flow rate 2.5 times that required for use) to the ceramic membrane filter. The filtration pressure is greater than 0.4 MPa; through three stages of filtration, the crude brine is gradually concentrated to 60% of its original flow rate. Subsequently, it is sent to a chamber filter press to remove the salt sludge, with the filtrate returning to the crude brine circulation tank. The brine filtered by the ceramic membrane filter is the refined brine, with a solid content of up to 0.5 ppm; this value cannot be determined by chemical analysis methods, satisfying fully the requirements for ion-exchange membrane brine. The filtration unit is additionally equipped with a timed backwash pipeline and an acid cleaning system to remove the internally accumulated calcium and magnesium deposits on the surface of the ceramic membrane. Compared with the traditional Dowler barrel process and the new floating barrel Gauze membrane filter process, ceramic membrane filters have the advantages of occupying less space, requiring fewer pieces of equipment, and being easier to install. In terms of saltwater mass, only the process using a floating tank and Gore membrane filter can be compared; the Gore membrane filter process involves large-scale equipment and complex operation. The operation of ceramic membrane filters is relatively simple. I would like to ask those with experience in operating ceramic membrane systems: what are the aspects of ceramic membrane filtration technology that still need improvement, and what points should be taken into consideration during operation? hcbbs hcbbs
The disadvantages of ceramic membranes include easy clogging, a decrease in flow rate over time as a result of filtration, and the tendency of the membrane tubes to break, among other issues that need to be improved.
Why does the content of the original poster’s post seem so familiar? It was over a year ago; the original poster should get in touch with that person from the post, Tiger, who is Wang Xiaohu from the ceramic membrane company. http://bbs.hcbbs.com/viewthread.php?tid=515068&highlight=%CC%D5%B4%C9%C4%A4
Which company do you work for? Have you all encountered these problems? What are the causes of all this?
Reply to 3# huawei: That passage was quoted there; I hope everyone can discuss the key points that need attention during production and operation, as well as the areas that require improvement
The investment cost for ceramic membranes is so high; I wonder if that company can afford to spend such money, haha
Reply to 6# lifengzi1982: Investment in the Kaier membrane method is much cheaper; it’s just that ceramic membrane technology isn’t yet fully developed, in my personal opinion.
The investment in ceramic membranes is lower compared to Kay Membranes, but it has one drawback: maintenance and repairs are not as convenient as those with Kay Membranes. They have now developed it to the third generation, with significant progress; many manufacturers are using it, although the third generation has not yet been put into use. Personally, I believe this process is suitable for raw salt with an imbalanced calcium-to-magnesium ratio.
Why does this post have so few followers? Two years have passed now, and ceramic membranes have been successfully used in many industries. I’m going to get this post more attention:victory:
They’re digging graves upstairs. . . I’m using the third-generation ceramic membrane technology here, and it’s functioning properly for now. I recently noticed that the flux level is dropping quite quickly; I’m not sure if it’s due to incomplete pickling, and I plan to check again during the next pickling process. I think it’s fine to use ceramic membranes with refined salt, but I’m not sure about sea salt. .
I haven’t been here for a long time; I’ll sign in again! We are currently learning the new processes for the new factory; please give us your guidance!