Structure of the Cracking Reactor

Structure of the Cracking Reactor

The cracking reactor features a core pressure-bearing sealed structure, adapted for an oxygen-free/low-oxygen, slight positive pressure working condition at 300~500℃. It mainly consists of 6 key components, with minor structural differences between the batch-type and continuous-type. The core details are as follows:

Reactor body: Cylindrical shell combined with elliptical/spherical head (integrally welded), made of high-temperature and wear-resistant carbon steel/chromium-molybdenum alloy steel, with anti-adhesion or feeding structures inside (adapted to different processes).

Heating system: Jacketed/coiled heating installed on the outer side, with coal, natural gas or self-produced pyrolysis gas available as heat sources; high-end models are equipped with waste heat recovery components.

Sealing and pressure-bearing components: High-pressure butt-welded flanges paired with high-temperature resistant metal gaskets, mechanical/packing seals adopted for shaft sealing, and reinforcing ribs fitted on the reactor body for reinforcement.

Feeding and discharging mechanism: Batch-type is equipped with batch feeding/discharging ports; continuous-type is fitted with a screw feeding device (enabling continuous feeding and slag discharge).

Temperature and pressure control system: Monitors the internal temperature and pressure of the reactor in real time, and precisely adjusts the heating intensity to ensure stable reaction.

Auxiliary supporting structures: Including decoking ports, flue gas exhaust ports, safety pressure relief valves, etc., adapted for operation, maintenance and safety requirements.