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Ebullated bed hydrogenation reactor and method of use thereof

A hydrogenation reactor and fluidized bed technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problem of low separation accuracy and efficiency, insufficient driving force for cyclone separation enhancement, and inability to achieve fully mixed flow operating conditions, etc. problems, to achieve the effect of high utilization rate of reaction space, small heat loss and good thermal insulation effect

Active Publication Date: 2022-04-15
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three-phase separator consists of inner cylinder and outer cylinder with sleeve structure, both upper and lower are open structures, the upper section of the inner cylinder and outer cylinder is an inverted frustum-shaped structure, and the lower section is an upright frustum-shaped structure, with large operating flexibility and simple structure , the catalyst storage capacity is large, but it cannot realize the fully mixed flow operating conditions
The three-phase separator has a simple structure, and only has an inner cylinder and an outer cylinder, which can meet the separation of gas-liquid-solid three-phase in a small-scale and low-flow state, and has a certain effect, but it is difficult to meet large-scale, high-efficiency separation, and cannot strengthen the cyclone. flow separation
Chinese utility model patent CN 207929188U is a supplement and extension of CN 108148621A. Similarly, the problem is that the enhanced driving force of cyclone separation is insufficient, and the separation accuracy and efficiency are not high
According to the true density of catalyst particles is 1500kg / m 3 Calculated, the specific surface area of ​​the catalyst with a particle size of 0.2mm is 0.02m 2 / g, which cannot meet the requirements for the use of small-diameter catalyst particles

Method used

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  • Ebullated bed hydrogenation reactor and method of use thereof
  • Ebullated bed hydrogenation reactor and method of use thereof
  • Ebullated bed hydrogenation reactor and method of use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] The ebullating bed hydrogenation reactor was used in the cold model experiment of 3000L / h ebullating bed hydrogenation reactor.

[0080] 1. Process flow

[0081] Such as image 3 shown.

[0082] 2. The main structural dimensions of the fluidized bed hydrogenation separator

[0083] The main structural dimensions of the ebullating bed hydrogenation reactor are shown in Table 1 below, and the size and structure of the two-stage ebullating bed hydrogenation separator are exactly the same.

[0084] Table 1: Structural dimensions of cold mold device for 3000L / h ebullated bed hydrogenation reactor

[0085]

[0086] 3. Implementation effect

[0087] The test process of the 3000L / h fluidized bed hydrogenation cold mold device was carried out with water and air, and the test results are shown in Table 2 below. From the test results, the catalyst achieves uniform fluidization, and there is no failure in continuous operation for 30 hours, and the amount of 0.1mm catalyst c...

Embodiment 2

[0091] The ebullating bed hydrogenation reactor was used in a 20000L / h straw pyrolysis liquid hydrodeoxygenation unit.

[0092] 1. Process flow

[0093] Such as Figure 4 shown.

[0094] 2. The main structural dimensions of the fluidized bed hydrogenation reactor

[0095] The main structural dimensions of the ebullating bed hydrogenation reactor are shown in Table 3 below, and the size and structure of the two-stage ebullating bed hydrogenation separator are exactly the same.

[0096] Table 3: Structural dimensions of ebullated bed reactor in hydrodeoxygenation unit of 20000L / h sewage straw solution

[0097]

[0098] 3. Implementation effect

[0099] The test process of the 20000L / h sewage straw hydrolyzate hydrodeoxygenation unit was carried out using the straw pyrolyzate. The test results are shown in Table 4 below. According to the test results, the catalyst achieves uniform fluidization, no coking occurs in the reactor after 2000 hours of continuous operation, and th...

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Abstract

The present disclosure relates to an ebullating bed hydrogenation reactor and a method for using the ebullated bed hydrogenation reactor, including: a pressure-bearing shell (3), a gas-liquid-solid three-phase reactor arranged in the upper space of the pressure-bearing shell A cyclone separator, a downflow liquid-phase product outlet pipe (14) arranged in the middle of the pressure-bearing shell, and a gas-phase outlet (7), a liquid-phase outlet (15) and a gas-liquid outlet arranged on the pressure-bearing shell. Miscible inlet (1). Also provided is a method for using the above ebullated bed hydrogenation reactor.

Description

technical field [0001] The disclosure belongs to the key equipment technology of transformative clean energy, and specifically relates to a fluidized bed hydrogenation reactor and a use method thereof. Background technique [0002] The ebullating bed reactor is a gas-liquid-solid three-phase fluidized bed reactor, which is widely used in the hydrogenation process because of its pressure drop, not easy to block, and long-term operation. Due to its unique structure and operation mode, the ebullated bed reactor has the following advantages: ① flexible operation, can operate at high or low conversion rate; ② can periodically recover or add catalyst from the reactor, without stopping The reactivity of the catalyst can be maintained under certain conditions; ③The catalyst bed is expanded by 30% to 50% through the circulating pump to ensure that there is enough free space between the catalyst solid particles; it can avoid the entrainment of raw materials or the solid particles prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/26B01J8/00
CPCB01J8/26B01J8/0055
Inventor 李剑平李诗豪常玉龙张桐江霞刘洪来汪华林
Owner EAST CHINA UNIV OF SCI & TECH
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