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Gas-liquid-solid multiphase flow reactor and its control system and method

A technology for multiphase flow reactors and control systems, applied in the field of filter systems and control systems in gas-liquid-solid multiphase flow reactors, can solve the problem of the influence of filter filtration stability, the layout spacing does not meet the requirements, and the filtration area Insufficient and other issues

Active Publication Date: 2019-12-10
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the filter elements are only evenly distributed close to the wall of the reactor, the cross-sectional area of ​​the entire reactor is not fully utilized, which may cause problems such as insufficient filtration area or unsatisfactory layout spacing.
In addition, because there are few factors considering the multiphase flow inside the reactor, it will affect the filtration stability of the filter.

Method used

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  • Gas-liquid-solid multiphase flow reactor and its control system and method
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  • Gas-liquid-solid multiphase flow reactor and its control system and method

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Embodiment 1

[0070] The radius R of the reactor body 1 of the gas-liquid-solid multiphase flow reactor adopting the internal filtration separation method is 1000 mm. The specifications of the filter element 22 and the filter assembly 21 and the arrangement of the filter assembly 21 under the same radial section of the reactor are shown in Figure 5 .

[0071] Wherein, the arrangement of two circles is adopted. The first circumference of the central arrangement of each filter assembly 21 in the first circle 31 satisfies r 1 =900mm. The second circumference of the center arrangement of each filter assembly 21 in the second circle 32 satisfies r 2 =700mm. The smallest center-to-center distance L between adjacent filter assemblies 21 in the first ring 31 and the second ring 32 min =220mm.

[0072] Wherein the center of each filter assembly 21 of the first circle and the second circle avoids 0.75R≤r d ≤0.85R (ie, 750mm-850mm) in the area where the slurry flow rate is relatively slow, and...

Embodiment 2

[0095] In this embodiment, the slurry bed reactor is taken as an example, and the internal filtration and separation method is implemented in the reactor body 1 with a diameter of 2000 mm. The reactor is operated at 250°C and 3.0MPa, and the filter 2 is operated according to the filtration parameters and procedures set in the controller 4. The liquid filtration capacity can be stabilized between 2.5-3.0t / h, and the operation time is more than 8000 hours .

[0096] For the specifications of the filter elements and filter components and the arrangement of the filter components in the radial direction of the reactor section, see figure 1 shown.

[0097] Among them, the filter pore specification of the filter element in the main filter assembly is 25 microns, the filter pore specification of the filter element in the auxiliary filter assembly is 40 microns, the outer diameter of the filter element is 20mm, and the length is 1.2m.

[0098] The arrangement of the filter component...

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Abstract

The invention discloses a gas-liquid-solid multi-phase flow reactor, and a control system and a method thereof. The reactor comprises a reactor body and a filter positioned in the reactor body, the filter comprises several filtering components with multi-loop arrangement along a circumferential part of the reactor, the control system comprises a controller, a filtering module and a backwashing module, the controller comprises a first control module, the first control module controls gradually increased filtering time of the multi-loop filtering components from an external one to an internal one, backwashing frequency is gradually reduced, and waiting time is gradually reduced. According to the invention, different filtering and back flushing operation strategies are carried out on the filters at different radial positions, the tunnel obstruction speed can be alleviated by reducing the filtering time, increasing the back flushing frequency, and increasing the waiting time on the filterwhich is nearest to the wall of the reactor, by closing to the center of the reactor by a filter core, a method of increasing the filtering time and reducing the back flushing frequency is employed, and waiting time is reduced, so that the filtering capability and the usage life of the filter core are increased.

Description

technical field [0001] The invention relates to the field of filtration of a gas-liquid-solid multiphase flow reactor, in particular to an internal filter system of a gas-liquid-solid multiphase flow reactor and its control system and method. Background technique [0002] In the reaction system of gas-liquid-solid multiphase flow, such as Fischer-Tropsch synthesis slurry bed reactor, the reaction gas enters from the bottom of the reactor and forms a gas-liquid-solid three-phase bed with solid catalyst and liquid products. In order to maintain the liquid level, these The liquid phase product needs to be separated from the solid catalyst by filtration and flows out of the reactor. Filtration methods are divided into two technologies: built-in filtration and external circulation filtration. External circulation filtration refers to leading the multiphase flow in the reactor to the filter outside the reactor for separation. After the separation is completed, the remaining mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/08B01D36/00B01D37/04
CPCB01D36/00B01D36/001B01D37/04B01J8/082B01J2219/2423
Inventor 卜亿峰门卓武杜冰孟祥堃胡云剑孙永伟
Owner CHNA ENERGY INVESTMENT CORP LTD