A Graphite Bursting Disc is a pressure relief device used for overpressure protection of pressure vessels. It consists of a bursting disc body and a holder, designed to rupture and release pressure at a set value, ensuring equipment safety.
Protective Role in Graphite Heat Exchangers
In block-type and shell-and-tube graphite heat exchangers, Graphite Bursting Discs are typically installed on the shell side or at the pipeline end. These heat exchangers are used for corrosive fluid heat transfer. In the event of channel blockage or reaction, internal pressure can rise rapidly. The bursting disc ruptures promptly upon overpressure, releasing pressure and preventing damage to the heat exchanger body, thus ensuring long-term stable operation of the heat exchange equipment.
Safety Barrier in Graphite Reactors
Graphite reaction equipment such as synthesis furnaces, absorption towers, and reaction vessels are commonly used in highly corrosive processes like hydrochloric acid synthesis and sulfuric acid absorption. Abnormal pressure increases may occur during reactions. The bursting disc, installed on the equipment top or outlet piping, activates immediately when pressure reaches the set value, providing rapid pressure relief and preventing reactor rupture. It serves as the final safety barrier for process protection.
Protective Function in Graphite Piping and Storage Tanks
In graphite piping and storage tank systems conveying or storing corrosive media, local overpressure may result from valve misoperation, external heat sources, or system blockages. As a localized protection component, the Graphite Bursting Disc ruptures preferentially to relieve pressure, preventing pipeline bursts or tank damage and maintaining the integrity of the conveying system.
Key Industry Applications
Chlor-Alkali Industry: Protects equipment from pressure-related damage in wet chlorine gas cooling, drying, and conveying systems.
Wet-Process Phosphoric Acid: Installed in the vapor space of reaction tanks and concentrators to handle frequent pressure fluctuations and avoid equipment fatigue damage.
Pesticide Synthesis: Used in chlorination and sulfonation reaction vessels for rapid pressure relief during intensely exothermic reactions and sudden pressure surges.
Pharmaceutical Intermediates: Provides corrosion-resistant protection for reaction vessels, requiring infrequent replacement and supporting continuous production.
The core function of Graphite Bursting Discs in low-pressure, highly corrosive environments is to provide a reliable pressure relief path, protecting core equipment such as heat exchangers, reactors, piping, and storage tanks from overpressure damage, while ensuring long-term operational stability through excellent corrosion resistance.
