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Reboiling and feeding heating two-in-one heating furnace and fractionation method thereof

A two-in-one heating furnace technology, applied in lighting and heating equipment, furnaces, hydrocarbon distillation, etc., can solve the problems of low investment and land occupation, high vaporization rate at the outlet of the feed heating furnace, etc.

Active Publication Date: 2012-11-21
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention enables the process flow of the feed heating furnace and the reboiler to save investment and land occupation; the load of the feed heating furnace and the reboiler can be freely adjusted through process control; and the content of heavy components in the heated material can be solved When it is very low, the vaporization rate at the outlet of the feed heating furnace is too high

Method used

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  • Reboiling and feeding heating two-in-one heating furnace and fractionation method thereof
  • Reboiling and feeding heating two-in-one heating furnace and fractionation method thereof

Examples

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Embodiment

[0061] Such as figure 2 As shown, the heating furnace process technology of the present invention is illustrated by taking the condensate oil processing technology as an example.

[0062] The initial distillation tower feed 1 at about 230°C enters the initial distillation tower 2a, and is divided into initial top oil gas 22 and initial bottom oil 26 after fractionation. The preliminary oil and gas 22 are sequentially condensed and cooled by the primary top air cooler 2b and the primary top aftercooler 2c, and then enter the primary top reflux tank 2d, and are separated into primary top gas 23, primary top oil 24, and primary top sewage 25 through the primary top reflux tank 2d ;

[0063] The first bottom oil 26 is supercharged by the first bottom pump 2f to be the first bottom oil (before the heat exchange) 27, and the logistics 27 becomes the first bottom oil (after the heat exchange) 28 after passing through the first bottom heat exchanger group 2g heat exchange, and the l...

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Abstract

The invention relates to a reboiling and feeding heating two-in-one heating furnace and a fractionation method thereof. A reboiling furnace and a feeding heating furnace are combined to control a flow, the two-in-one furnace replaces the reboiling furnace and the feeding heating furnace which are respectively arranged, a convection chamber of the two-in-one furnace serves as the reboiling furnace, and a radiation chamber of the two-in-one furnace serves as the feeding heating furnace. Base oil of a fractionating tower a enters the convection chamber of the two-in-one furnace to be heated, the base oil is divided into two paths after heating, one path of the base oil serves as tower bottom reboiling oil to return to the bottom of the tower a, and the other path of the base oil serves as feeding of the radiation chamber of the two-in-one furnace. The two-in-one furnace can flexibly adjust loads of the reboiling furnace and the feeding heating furnace by adjusting quantity of reboiling oil (one path entering the radiation chamber) at the bottom of the fractionating tower a and recycle oil at the bottom of a fractionating tower b. Partial heavy materials at the bottom of the fractionating tower b return to an inlet of the radiation chamber of the two-in-one furnace to be mixed with the feeding of one path of the radiation chamber of the two-in-one furnace at the bottom of the fractionating tower to serve as mixed feeding of the radiation chamber of the two-in-one furnace, and vaporization rate of an outlet of the radiation chamber is controlled in an appropriate scope.

Description

technical field [0001] The invention relates to the technical field of heating furnaces in petroleum refining and petrochemical production, in particular to a two-in-one heating furnace with the functions of a reboiler and a feeding furnace and a method for using the same. Background technique [0002] In petroleum refining and petrochemical production, heating furnaces can be seen everywhere, including feed heating furnaces and reboilers located at the bottom of fractionation towers. Whether it is a reboiler or a feed heating furnace, its function is to provide enough heat for the fractionation tower to enable the fractionation tower to complete the separation task. Depending on the location of the heating furnace, its function is also slightly different. [0003] The main function of the feed heating furnace is to meet the operating conditions and vaporization rate requirements of the feed section of the fractionation tower. The vaporization rate at the outlet of the heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B19/02C10G7/00
Inventor 袁毅夫王亚彪王秋萍
Owner CHINA PETROCHEMICAL CORP
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