1, by the media radiation (pitting, intergranular corrosion); 2, the thermal stress of the crack or alkali brittle; 3, the wear and tear (3), the wear and tear, Thinning or even corrosion. 2, after welding to eliminate stress, cracks should be repaired; 3, more than the minimum allowable thickness of the design, the need to replace the body. 2, after welding to eliminate the stress, the crack should be repaired; In this case,

2, the misuse of raw materials; improper ratio of raw materials; have a violent reaction; 3, due to poor heat transfer or mixing performance, resulting in the production of stainless steel reactor failure phenomenon: overtemperature overpressure failure reasons: 1, instrument failure, control is not strict; Side reaction; 4, intake valve failure Intake pressure is too high, high pressure. 2, according to the operation method, to take emergency pressure, according to the provisions of the regular time quantitative feeding, to prevent misuse; 3, increase the heat transfer area or remove fouling, to improve the transmission, to improve the transmission and control; Heat effect of repair blender, improve the mixing efficiency; 4, off the total steam valve, steam repair valve. In this case,

2, the oil ring position is not properly blocked or oil can not form an oil seal; 3, the gland did not cover the gap, Packing, packing quality is poor, or the use of too long; 4, packing box corrosion. Should pay attention to the mechanical seal 1, the dynamic and static ring face deformation, bruise; 2, the end face than the pressure is too large, the heat generated by the friction deformation; 3, seal selection is not right, not enough compression, or V-ring installed anti-lost seal 5, the operating pressure, temperature instability, hard particles into the friction pair; 6, the axis of the string volume exceeds the target; 7, inlaid or adhesive dynamic, static ring of the set Leakage. 2, adjust the oil ring position, cleaning oil; 3, press the packing, or replace the filler; 4, repair or replacement; 4, repair or replacement of the filler; Mechanical seal 1, the replacement of friction or re-grinding; 2, adjust the pressure to be appropriate to strengthen the cooling system, take away the heat in time; 3, seal selection, installation should be reasonable, have sufficient clamping force; 6, adjustment, maintenance of the axis of the amount of channeling to achieve the standard; 7, to improve the installation process, or interference, or interference with the installation process, or to ensure that the vertical and horizontal adjustment; The amount should be appropriate, or adhesive to be easy to use, solid. In this case,

4, stainless steel reaction tank Fault phenomenon: kettle abnormal noise causes: 1, the mixer friction stirrer accessories (coil, thermometer tube, etc.) or scraping wall; 2, the agitator loose; 3, lining drums, and stirring 4, blender bending or bearing damage. 2, stop inspection, fastening bolts; 3, repair blister, or replace the lining; 4, overhaul or replacement of the shaft and bearings. 4, repair or replacement of the shaft and bearings. In this case,

5, stainless steel reaction tank Fault phenomenon: enamel agitator fall failure reasons: 1, by dielectric corrosion fracture; 2, the motor rotation in the opposite direction. Treatment: 1, the replacement of enamel shaft or FRP repair; 2, stop changing steering. In this case,

6, stainless steel reaction tank Fault phenomenon: enamel kettle flange leakage Fault reasons: 1, flange porcelain surface damage; 2, select the gasket material is unreasonable, improper installation of joints, vacancies, stagger; 3, loosening or insufficient number . 2, according to process requirements, select the gasket material, gasket interface to take place, location should be uniform; 3, according to design requirements, a sufficient number of clips, and to be fastened. In this case,

7, stainless steel reaction tank Fault phenomenon: porcelain surface scale explosion and micro-hole failure reasons: 1, jacket or mixing tube into the acidic impurities, resulting in hydrogen embrittlement phenomenon; 2, porcelain layer is not dense, microporous hidden dangers. Treatment: 1, after neutralization with sodium carbonate, rinse with water or repair, serious corrosion need to be replaced; 2, a small number of pores can be repaired, a serious update. 8, stainless steel reaction tank Fault phenomenon: the motor current exceeds the rated value Fault reasons: 1, bearing damage; 2, the kettle temperature is low, the material viscosity; 3, the spindle speed faster; 4, the agitator diameter is too large. 2, according to the operating procedures to adjust the temperature, the material viscosity can not be too large; 3, control the spindle speed in a certain range; 4, appropriate adjustments.