In the chemical industry, safe production has always been the foundation of enterprise development, and the overpressure protection of pressure equipment is an important part of ensuring production safety. As an efficient and reliable pressure relief device, rupture disc plays an important role in many aspects of chemical production. Rupture disc can act quickly when the pressure of the equipment exceeds the safety limit, prevent the occurrence of vicious accidents such as explosions and leaks through precise pressure relief, and provide a guarantee for the stable operation of chemical enterprises.
Rupture disc is widely used in chemical reaction equipment. The chemical reaction process is often accompanied by drastic changes in pressure and temperature, especially in the synthesis reaction, polymerization reaction and other processes, the concentration of reactants, the ratio or small fluctuations in external conditions may cause the pressure in the reactor to rise sharply. Traditional safety valves respond slowly when dealing with instantaneous overpressure, and are susceptible to medium corrosion and fouling and fail. The rupture disc adopts an anti-arch structure design, which uses the plastic deformation of the material to achieve pressure relief. There are no mechanical friction parts. The reaction time can be controlled at the millisecond level, and the overpressure medium can be discharged in a very short period of time. For example, in an ammonia synthesis tower for fertilizer production, if the mixing ratio of hydrogen and nitrogen is unbalanced in a high temperature and high pressure environment, the pressure may rise sharply. Rupture disc can rupture immediately when the pressure reaches the set value, preventing the tower from being subjected to excessive pressure and exploding. At the same time, the ring-groove design of the rupture disc allows the burst pressure accuracy to be very high, and the deviation can be controlled within ±5%, which can accurately match the safety pressure requirements of the reaction equipment.
In the field of chemical storage equipment, rupture disc is an important barrier to ensure the safety of storage tanks. Chemical raw materials and finished product storage tanks often store flammable, explosive, toxic and harmful media, such as organic solvents such as methanol, ethanol, toluene, and corrosive liquids such as sulfuric acid and nitric acid. During the feeding and discharging process of the storage tank, if the operation is improper or the influence of external high temperature and fire sources may cause the pressure in the tank to increase abnormally. Rupture disc has good fatigue resistance and can withstand the normal working pressure of the storage tank for a long time without fatigue damage. When the pressure exceeds the set value, the reverse arch structure of the rupture disc will break accurately along the ring groove, forming a stable discharge channel. For storage tanks that store highly volatile media, the rupture disc can also be used in conjunction with a breathing valve. Under normal operating conditions, the micro-pressure is adjusted by the breathing valve, and the pressure is urgently relieved by the rupture disc when the pressure is overpressure, forming a double protection. In addition, the material of the rupture disc can be selected according to the characteristics of the medium, stainless steel, nickel alloy and other corrosion-resistant materials, which can effectively deal with the erosion of corrosive media such as acid and alkali.
In short, rupture disc has the advantages of rapid response, high accuracy, corrosion resistance, and no leakage. It has been widely used in reaction equipment and storage equipment in the chemical industry. Through precise overpressure protection, the rupture disc effectively reduces the safety risks in chemical production and provides a reliable guarantee for the safe production of enterprises.
