Factory trouble
a) The filter element is an industrial consumable with a replacement cycle.
b) Imported brand filter element has high price and long delivery time.
c) Frequent replacement increases the operating cost of the plant.
Optimization plan
e) Provide the owner with the original filter element cleaning scheme, and solve the primary problems first
f) Provide alternative solutions for domestic filter elements.
g) Provide a set of back blowing scheme to replace the existing model and solve the problem permanently.
Regeneration process
① Nitrogen purging ② solvent immersion ③ ultrasonic cleaning ④ 4 inspection ⑤ 5 packaging
1.1 required inspection tools: non reflective black background; fluorescent light source, light intensity shall be adjusted within the range of 20001x-5000 X; it is required that the long-distance and short-distance vision of inspection personnel shall be above 4.9 or 4.9, and the correction strength shall be above 5.0 and 5,0.
1.2 in the dark or dark place, place the light source inside the filter element, respectively under the black background, gently rotate the filter element cleaned by ultrasonic and naturally dried, and conduct visual inspection. The inspection pause time is 4S. The filter element that has not been cleaned and the filter element that has been cleaned can be checked by comparison, and the filter element that has been cleaned can be preliminarily inspected by the light transmittance under the black background.
2.1 required inspection tools: flashlight, 20x hand-held magnifier.
2.2 test the outer surface and visible inner surface of the filter element after ultrasonic cleaning with a strong flashlight and a 20x magnifying glass, or in the outdoor sunlight. The particle size of the active carbon particle / rust is 0.05mm, After 20 amplification, the particle size of the identifiable particles is 2.5um, and the filtration degree of the filter element is 10um. It is required that there is no particle visible to the naked eye on the surface of the filter element. This inspection item is an accurate inspection method for the naked eye identification.
The special differential pressure test device provided by Jiangsu torchi, equipped with a high fidelity stainless steel differential pressure gauge, detects that the gas is clean gas, and the operating pressure can be taken as the working pressure of the equipment. It can carry out differential pressure test on the non cleaned and cleaned 316 metal sintered powder filter elements respectively, carry out differential pressure ratio pairs, and carry out differential pressure sampling inspection on the cleaned filter elements at a ratio of 10%, and enlarge them at a ratio of 10x The initial pressure difference of 5 kPa required by the design is compared, and the accurate cleaning effect test is obtained.
The above inspection shall be carried out in the presence or under the guidance of the inspection engineer of torchi, and the actual inspection data shall be recorded.
