1. Dust concentration at the flue gas inlet: ≤ 300 g/Nm3;
2. The normal operating temperature is 100 ℃, and the instantaneous temperature is 120 ℃ (within 10 minutes)
3. Equipment resistance: 1470 Pa to 1770 Pa
4. Filtration wind speed: 0.9 m/min;
5. Diameter of flower plate hole (mm): Ø 130;
6. Bag filter dust collector dust emission concentration value:<10 mg/Nm3;
Sleeve kiln coal millDust collector bagPerformance indicators:
The bag bag of the sleeve kiln coal mill dust collector should be made of materials with excellent properties such as strength, heat resistance, chemical resistance, hydrolysis and thermal deformation resistance, and anti condensation.
Using laminated polyester needle punched felt (water and oil repellent)
Performance indicators of bag filter for sleeve kiln coal mill dust collector:
Unit area weight of filter material: 550 ± 10g/m2;
Thickness: greater than 2.2 millimeters;
Breathability: 190L/dm2. min;
Fracture strength (size 200/50mm): warp>900N; weft>1200N;
Elongation (@ 50N/5cm): Longitudinal ≤ 3%
Elongation (@ 50N/5cm): Lateral ≤ 3%
Heat shrinkage (@ 260degC, 90min): ≤ 1.5%
(Shrinkage rate ≤ 1 ‰ under continuous working conditions at 120 ℃)
Post treatment: heat setting, firing pressure, PTFE film infiltration treatment.
Requirements for bag sewing of sleeve kiln coal mill dust collector
1. Upper opening of dust collector bag: equipped with stainless steel spring expansion ring and sealing ring; It should be smooth and free of burrs, and the filter bag should fit tightly with the flower plate hole; Waterproof, oil draining_
2. Top and bottom of the filter bag: a reinforced wear-resistant section not less than 140mm long, with two rows of double stitch lock stitching (the stitching is staggered 180 degrees from the stitching on the bag body);
Requirement for 3 seams: The longitudinal seams should be firm, straight, and not less than three; The circular stitching on the opening of the filter bag should be firm and not less than two on each side. The circular stitching on the bottom of the filter bag is allowed to be single, but more than two circles should be sewn. The edge of the filter bag is interlocked, smooth and wrinkle free;
4. Suture material: PTFE sewing thread;
5 Sewing quality: The needle spacing and sewing width of the sewing thread should comply with the provisions of Chapter 8 and Chapter 9 of GB12625-90 and meet the following requirements:
a) The number of stitches for filter bag stitching within 10cm should not be less than 20-30 stitches;
b) The sewing width of the filter bag is 10-20mm, with a lower limit for thin filter media and an upper limit for thick filter media;
c) Continuous jumpers are not allowed, and within 1 meter of the suture line, the jumper should not exceed 1 needle, 1 line, or 1 location;
d) No floating line;
e) The bag bag of the sleeve kiln coal mill dust collector is not allowed to continuously fall off, and there should be no more than one falling off within 1 meter;