Silicon carbide ceramic tubular membrane brine refining technology is a mature process, the use of silicon carbide ceramic tubular membrane material has a strong resistance to contamination, acid and alkali resistance, as well as strong anti-mechanical erosion performance characteristics, and the use of high-efficiency “staggered flow” filtration, can provide stable and reliable long-term high-quality brine, with other refining and filtration technology is difficult to reach the efficiency and advantages. It can provide stable and reliable high quality brine for a long time, which has the advantages of other refining and filtration technologies.The crude brine undergoes saltification, refining reaction, crude filtration, and tubular membrane filtration to obtain refined brine that meets the primary brine product index.

I. Silicon Carbide Membrane Brine Refining Process Flow Chart

II. silicon carbide membrane brine refining technology features

1, Narrow aperture distribution of membrane element, wrong flow filtration, high separation precision;

2, acid and alkali resistance, solvent resistance, oxidation resistance, high temperature resistance;

3, high mechanical strength, good abrasion resistance, scouring resistance;

4, good thermal stability, stable material properties;

5, high permeability flux, long service life, strong regeneration capacity;

6, anti-microbial degradation and erosion, anti-pollution ability;

7, short process flow, small equipment footprint, more economical investment;

8、Stable solid content of the discharged concentrate;

9, fully automated process design;

10, fully closed operation process;

11, energy saving, low operating costs.

III. silicon carbide membrane and other membrane brine refining process comparison

Table 1 Comparison of Brine Refining Processes with Silicon Carbide and Organic Membranes

表2 碳化硅膜与传统陶瓷膜盐水精制工艺对比

四、碳化硅膜盐水精制应用案例

240m^3/h一次盐水精制有机膜系统改造为碳化硅膜系统

配套管式陶瓷膜元件

宁波某氯碱企业一次盐水装置碳化硅膜应用该公司因原有机膜膜设备到达使用年限，维修成本高，同时由于使用土地有限，2021年7月一期盐水精制改造新上单台240m^3/h碳化硅膜设备，投资、占地和运行成本比传统陶瓷膜工艺降低一半，使用三个月后产水稳定，盐水指标优，2023年2月二期又新上三台碳化硅膜装置。

表3 运行数据参数