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A kind of chilling tower for separation of Fischer-Tropsch synthesis products and its process system

A Fischer-Tropsch synthesis and chilling tower technology, which is applied in the field of chemical equipment and devices, can solve the problems of uneven distribution of fluid in the chilling tower, low system heat recovery rate, incomplete product separation, etc., and achieves reasonable design structure and operation. Stable and reliable, high heat recovery rate

Active Publication Date: 2021-07-13
YANKUANG ENERGY R&D CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of quenching tower and process system thereof for the separation of Fischer-Tropsch synthesis products in order to solve the above problems, to solve the problem of uneven distribution of fluid in the quenching tower, incomplete product separation, and easy deposition of solids. As well as the low utilization rate of system heat energy and unstable operation, it is especially suitable for the design and operation of large-scale Fischer-Tropsch synthesis product separation equipment and processes

Method used

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  • A kind of chilling tower for separation of Fischer-Tropsch synthesis products and its process system
  • A kind of chilling tower for separation of Fischer-Tropsch synthesis products and its process system
  • A kind of chilling tower for separation of Fischer-Tropsch synthesis products and its process system

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Embodiment 1

[0056] A process system for the separation of Fischer-Tropsch synthesis products, the process flow is as follows Figure 7As shown, the gaseous product from the top of the Fischer-Tropsch synthesis reactor with a temperature of about 320°C enters the quenching tower through the main and auxiliary feed systems, and in the quenching tower, it undergoes spray washing, cooling, tray washing, cooling and condensation After separation, the heavy oil enters the bottom of the tower after being condensed and separated from the gas phase product, and the solid particles entrained in the gas phase product enter the liquid phase product at the bottom of the tower after being sprayed and washed. The light oil and the tail gas after the reaction are sent to the subsequent process through the tower top discharge system in the form of gas phase products. The heavy oil in the liquid phase at the bottom of the tower is cooled by the heat exchange element, and part of it is sent to the liquid ci...

Embodiment 2

[0059] A process system for the separation of Fischer-Tropsch synthesis products, the flow process is as follows Figure 8 As shown, the gaseous product from the top of the Fischer-Tropsch synthesis reactor with a temperature of about 345°C enters the quenching tower through the main and auxiliary feed systems, and in the quenching tower, it undergoes spray washing, cooling, tray washing, cooling and condensation After separation, the heavy oil enters the bottom of the tower after being condensed and separated from the gas phase product, and the solid particles entrained in the gas phase product enter the liquid phase product at the bottom of the tower after being sprayed and washed. The light oil and the tail gas after the reaction are sent to the subsequent process through the tower top discharge system in the form of gas phase products. The heavy oil in the liquid phase at the bottom of the tower is cooled by the heat exchange element, and part of it is sent to the liquid c...

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Abstract

The invention relates to a quenching tower and its process system for the separation of Fischer-Tropsch synthesis products, comprising a quenching tower body, a main feed system, an auxiliary feed system, heat exchange elements, a spray washing system and a tray system, The upper part of the quench tower body is a gas phase area, and the lower part is a liquid phase area, the main feeding system is arranged in the gas phase area, and the spray washing system and the tray system are sequentially arranged above the main feeding system , the auxiliary feed system and the heat exchange element are arranged in the liquid phase region. Compared with the prior art, in the present invention, the gas phase product of the Fischer-Tropsch synthesis reactor is washed, cooled and distilled multiple times in the quenching tower, so as to realize the effective separation of Fischer-Tropsch synthesis light oil and heavy oil, and the quenching tower The design structure and layout are reasonable, and it has the characteristics of high product separation efficiency, large operating flexibility, simple process system, low system resistance, high heat recovery efficiency, etc., and is more suitable for the operation of large-scale Fischer-Tropsch synthesis process systems.

Description

technical field [0001] The invention belongs to the field of chemical equipment and devices, and in particular relates to a quenching tower for separation of Fischer-Tropsch synthesis products and a process system thereof. Background technique [0002] The Fischer-Tropsch synthesis reaction is a typical catalytic exothermic reaction. At present, one of the commonly used catalysts is an iron-based catalyst and the other is a cobalt-based catalyst. Both catalysts are in the form of fine solid particles with a particle size of 0-250 μm. The quenching tower is one of the important equipment of the Fischer-Tropsch synthesis system, mainly used to separate the heavy oil and light oil in the gas-phase product of Fischer-Tropsch synthesis, and recover the heat energy carried in the gas-phase product of Fischer-Tropsch synthesis. [0003] Since the Fischer-Tropsch synthesis gas phase product generally has a relatively high temperature and carries some fine solid catalyst particles, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D5/00F28D21/00C10K1/04
CPCC10K1/04F28D21/0014Y02P20/10Y02P70/10
Inventor 孙启文颜芳张宗森岳建平董良滕强
Owner YANKUANG ENERGY R&D CO LTD
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