Straight pipe type: mostly used in high and low parallel anti-reflow system. It is characterized by direct insertion from the bottom of the plunger and simple structure. Low pressure drop.

Folding type: mostly used in coaxial reflexive systems.

Performance: 1, the equipment structure is special, inclined pipe is prefabricated in multiple sections, on-site welding. 2, the inner wall erosion corrosion is strong, high requirements for lining construction, lining thickness 150mm. 3. During lining construction, strictly control the drying process to prevent the lining from falling off during use.

Usage: The riser reactor is the key equipment in the heavy oil catalytic cracking unit. The reaction part adopts the straight riser reactor, which is directly inserted into the settler through the gas section from the lower part of the settler. The reactor is a Class I vessel.