Bag dust removal equipment quality appraisal

bag dust removal equipment takes the synergy of filtration capture and dust cleaning and regeneration as the core principle. By optimizing the filtration wind speed, cleaning pressure and filter bag life, it achieves the synergy of dust collection efficiency, emission concentration and system pressure drop. It is widely used in the field of flue gas treatment in cement, metallurgy, electric power and chemical industries. In high-temperature flue gas treatment, it is used for deep purification of high specific resistance dust; in high-humidity conditions, it meets the anti-condensation operation above the dew point temperature; in sticky dust scenarios, it ensures the reliability of pulse cleaning. Compared with electrostatic precipitators, bag dust removal equipment has the characteristics of strong adaptability, low operating cost and no secondary pollution (no ozone generation). It is the core equipment for industrial smoke and dust control.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide quality appraisal services for bag dust removal equipment. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for bag dust removal equipment quality appraisal.

As environmental protection emission standards become stricter, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1, performance indicator dispute: excessive emission concentration, filter bag damage rate;

2, material defects: peeling strength of PTFE coating on filter material, poor corrosion resistance of cage steel;

3, process problems: flower board flatness deviation, pulse valve response delay;

4, contract performance dispute: core modules (such as imported filter material brands, intelligent pressure difference control systems) are inconsistent with the technical agreement.

Bag dust removal equipment quality appraisal technical methods mainly include:

1, equipment appearance inspection

Conduct a comprehensive inspection of the appearance of the equipment, including the size, shape, surface flatness, welding quality, etc. of the equipment. Check whether the equipment has defects such as deformation, cracks, corrosion, etc., and determine whether the manufacturing process of the equipment meets the requirements.

2 and performance test

test various performance indicators of the equipment, including filtration efficiency, emission concentration, air volume, wind pressure, etc. Compare the test data with contract requirements and industry standards to determine whether the performance of the equipment meets the standards.

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A cement factory of the applicant signed a "Kiln End Bag Dust Removal System Procurement Contract" with an environmental protection company of the respondent, and it was agreed that the emission concentration should be ≤15mg/m³. After being put into operation, the actual measurement reached 45 mg/m³. The manufacturer argued that it was caused by improper setting of operating parameters.

Identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information, contract technical agreements, on-site inspection case materials and other data of "bag dust removal equipment" and made the following quality analysis opinions :

The filter material PTFE coating of the bag dust removal equipment involved in the case has a peeling strength of only 30N/5cm (agreement ≥ 50N/5cm), and the pulse valve injection pressure is only 0.2MPa (agreement ≥ 0.3MPa); the flatness deviation of the flower board is 3mm (agreement ≤ 1mm), causing the filter bag seal to fail.

The appraisal conclusion determined that defects in materials and cleaning systems were the main reasons for excessive emissions.

bag dust removal equipment quality appraisal report should include:

1, appraisal purpose (such as environmental penalty attribution, performance verification) and reference standards;

2, involved equipment model, filter bag batch, operation record;

3, testing method and equipment list ( Such as dust concentration meter, SEM);

4, analysis of the correlation between detection data and failure (such as the impact of coating strength on leakage rate);