Petrochemical multi-layer-wall reboiler

Abstract

The invention discloses a petrochemical multi-layer-wall reboiler. The reboiler comprises a base, wherein a reboiler outer shell is fixed at the top end of the base through a mounting rack; a reboilermiddle shell is arranged on the inner side of the reboiler outer shell; a reboiler liner is arranged on the inner side of the reboiler middle shell; a side flange baffle is arranged on one side of the reboiler outer shell; a heating box is arranged at the top end of the base; a heating plate is arranged on the inner side of the heating box; the top end of the heating box is connected with a liquid pump through a transport pipeline; a connecting pipeline is arranged on one side of the liquid pump, penetrates the inner side of the side flange baffle and extends to the inner side of the reboilerliner. By arranging a separation tank, a spiral deflector and a filter chamber, the problem of influence on the use effect of the petrochemical reboiler due to the fact that the petrochemical reboiler cannot filter entering liquid before heating a feed liquid in a fractionating tower and impurities settle at the bottom end of the reboiler for a long time when the petrochemical reboiler is in useis solved.

Description

technical field [0001] The invention belongs to the technical field of petrochemical equipment, in particular to a multi-layer wall reboiler for petrochemical industry. Background technique [0002] A reboiler is a special heat exchanger capable of exchanging heat while having a vaporization space. The material level in the reboiler is at the same height as the fractionation column level. The liquid phase is supplied from the bottom line into the reboiler. Typically 25-30% of the liquid phase is vaporized in the reboiler. The vaporized two-phase stream is sent back to the fractionation column, where the vapor phase components return to the column and pass upward through the trays, while the liquid phase components fall back to the bottom of the column. The material expands or even vaporizes when heated in the reboiler, and the density becomes smaller, so it leaves the vaporization space and returns to the tower smoothly, returning to the gas-liquid two-phase in the tower....

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of multilayer wall reboiler for petrochemical industry, when using the existing reboiler, it is difficult to filter the liquid entering before heating the liquid in the fractionation tower and it is difficult to avoid the steam in the reboiler. Problems with backflow of condensation at the top of the unit and difficulty conserving heat inside the unit

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