GB/T 37251-2018 in English

1. Background and significance of standard formulation

GB/T 37251-2018 "Cordierite-based high-temperature ceramic membrane filter element" is an important specification for the field of high-temperature gas purification, filling the domestic technical gap in this field. With the increasing demand for high-efficiency dust removal technology in industries such as industrial boilers, metallurgy, building materials and waste incineration, the formulation of this standard will help standardize product quality, improve the technical level of the industry, and provide a basis for the design and selection of related equipment.

2. Comparison of standard frameworks

3. Interpretation of the main contents of the standard

3.1 Product classification

According to Table 1, cordierite-based high-temperature ceramic membrane filter elements are divided into three categories according to the pore diameter:

• M10: pore diameter is 10~20μm
• M20: pore diameter is 21~30μm
• M30: pore diameter is 31～40μm

3.2 Physical and chemical performance requirements

Table 5 specifies the physical and chemical performance indicators in detail, including:

3.3 Filtration performance requirements

Table 6 lists the filtration performance indicators of different categories of products:

• M10: pore diameter 10~20μm, filtration pressure drop ≤300Pa, dust removal efficiency 99.95%
• M20: pore diameter 21~30μm, filtration pressure drop ≤200Pa, dust removal efficiency 99.90%
• M30: pore diameter 31~40μm, filtration pressure drop ≤100Pa, dust removal efficiency 99.80%

4. Implementation Suggestions

4.1 Product Selection

Users should choose the appropriate product category according to the specific application scenario. For example, M10 is suitable for environments with low dust concentration, while M30 is more suitable for high temperature and high dust occasions.

4.2 Installation and Maintenance

The following points should be noted during installation:

• Strictly match according to product specifications and dimensions
• Avoid mechanical collision that may cause component deformation
• Regularly check filtration efficiency and pressure drop changes

4.3 Precautions in Standard Implementation

It is recommended that enterprises establish a sound quality management system to ensure that product production and inspection meet standard requirements. At the same time, technical personnel training should be strengthened to familiarize themselves with the use of relevant test methods and testing equipment.