Horizontal alkylation reactor with dry gas seal

Abstract

The invention relates to a horizontal alkylation reactor with a dry gas seal. The reactor comprises a main body. An inner circulation sleeve is arranged in the main body, and a guide disk is arranged at the rear end of the main body; an U-shaped tube heat exchange tube bundle is arranged in the inner circulation sleeve; the guide disk is connected with a motor; a propeller is arranged between the tail end of the inner circulation sleeve and the guide disk, a sealing system is arranged on a main shaft of the propeller and is in direct connection with the motor; a raw material inlet is connected with a raw material inlet pipe; the tail end of the raw material inlet pipe is connected with a raw material dispersing pipe; a circulating acid inlet is connected with a circulating acid feeding pipe which penetrates through the raw material dispersing pipe; the sealing system is a double-end-face dry gas seal and is connected with the propeller main shaft through a shaft sleeve assembly; a spring seat and a gland are arranged on the shaft sleeve assembly respectively; compression rings, a movable ring and a static ring are arranged on the two sides of the spring seat respectively; a nitrogen or an instrument air inlet, a leak air outlet and a flushing opening are arranged in the gland respectively, and a group of driving rings are arranged at the tail end of the gland. The reliability and the stability can be effectively improved.

Description

technical field [0001] The invention relates to a horizontal alkylation reactor, in particular to a horizontal alkylation reactor equipped with a dry gas seal. Background technique [0002] The horizontal alkylation reactor is a horizontal eccentric double fulcrum built-in U-tube heat exchanger-type stirred reactor, which belongs to the type II pressure vessel and is a catalyst (H 2 SO 4 ) key equipment in the alkylation reaction (the catalyst is 90%~98% concentrated sulfuric acid). Reaction raw material (petroleum liquefied gas C 4 Distillate, the main components are isobutane and butene) under the action of concentrated sulfuric acid, an alkyl addition reaction occurs to generate a mixture of alkanes with various branched chains, collectively referred to as alkylate oil. The reaction is a liquid-phase exothermic reaction, and a lower reaction temperature is conducive to the positive direction of the reaction equilibrium, but will reduce the reaction rate; a higher react...

Images