Reboiler for material of high viscosity,high solidifying point and intensified heat sensitivity

Abstract

The invention discloses a reboiler for high viscosity, high coagulating point and strong thermal sensitive material, which comprises a kettle and several heat exchanging tubes inside the kettle. Wherein, the top of kettle has a material inlet, a gas outlet and a manhole; the bottom has a material outlet and several material inlets. Since said invention arranges several material inlets at the bottom of kettle, and enlarges the center distance between the heat exchanging tubes, it can improve the cycle amount and flow-ability, shorten the time of materials inside the reboiler, reduce the thermal loss caused by overheat carbonization or expansion, confirm stable operation, prolong the operation period and reduce the producing cost, for the high viscosity, high coagulating point and strong thermal sensitive material.

Description

technical field [0001] The invention relates to a reboiler, in particular to a reboiler for materials with high viscosity, high freezing point and strong heat sensitivity such as heavy oil. Background technique [0002] The structure design of the kettle reboiler usually used in the distillation process is as follows: figure 1 As shown, the top of the evaporator body is provided with a material inlet 1, a gas outlet 2, and a manhole 3, and the bottom of the evaporator body is provided with a material outlet 4. After part of the material is heated to a boiling state by the heat medium in the tube side in the evaporator, it is The gas exits into the distillation tower, and the central moment between the heat exchange tubes is generally taken as t=1.25d (d is the outer diameter of the heat exchange tubes). For high-viscosity materials, especially heavy tar with the characteristics of high viscosity, high freezing point, and strong heat sensitivity, if this design method is ado...

AI Technical Summary

Problems solved by technology

For high-viscosity materials, especially heavy tar with the characteristics of high viscosity, high freezing point, and strong heat sensitivity, if this design method is adopted, the material has high viscosity and poor fluidity under operating conditions, and the gap between heat exchange tubes is small. The material is easy to stay between the heat exchange tubes. If the residence time in the kettle is too long, local overheating will aggravate carbonization or puffing, reduce the heat transfer effect, or even block the equipment, so that the operation cannot be carried out normally.

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