Slurry bed reactor

A reactor and slurry bed technology, which is applied in the field of high-efficiency internal circulation slurry bed reactors, can solve problems such as affecting reaction efficiency, backmixing, and large gas and slurry sliding speed.

Active Publication Date: 2014-08-06
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, for the devices developed in the prior art, if operating at a higher gas flow rate, the relative slip velocity of the gas and the slurry is too large, causing serious back mixing, thereby significantly affecting the reaction efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] This example uses figure 1 The reactor shown is for Fischer-Tropsch synthesis. The inner diameter of the slurry bed stainless steel reactor shell is 1.2 meters, and the axial height of the reactor is 35 meters. liquid separator. The liquid level of the slurry bed is located 18 meters above the syngas distributor. The upper edge of the expansion port at the top of the draft tube is located at a height of 14.5 meters above the syngas distributor, the bottom of the feeding tube of the draft tube is located at a height of 0.2 meters above the syngas distribution plate, and the inner diameter of the feeding tube 20 of the draft tube 17 is 0.36 m. rice.

[0085] The draft tube is completely submerged below the liquid level of the slurry bed, and the outer surface of the expansion port at the upper end of the draft tube 17 includes six rows of ring-shaped raised structures. The height of these ring-shaped raised structures is 0.25 meters, and the included angle with the axia...

Embodiment 2

[0091] Embodiment 2: use the same reaction device as in Example 1, but the difference is that, as shown in Figure 8 (b), the following changes have been made to the arrangement of the nozzles in the draft tube: 8 nozzles are divided into two layers and arranged , the vertical distance between the two layers is 4 meters, and each layer is provided with 4 nozzles, which are installed at 4 meters and 8 meters below the expansion section of the diversion pipe. These nozzles are evenly arranged around the circumference of the diversion pipe, and each nozzle The included angle between directions is 30°, and the arrangement of nozzles in the horizontal direction is still as shown in Figure 8(c), that is, the nozzle opening direction is along the tangential direction of the duct wall. The relevant experimental results are shown in Table 2.

Embodiment 3

[0092] Embodiment 3: The reactor setting method is the same as that of Example 1, the difference is that, in the top view, the nozzle is set in the manner shown in Figure 8(d), so that the opening of the nozzle is closer to the position in the middle of the draft tube, and the opening direction The angle between the nozzle and the tangential direction where the nozzle passes through the wall of the draft tube is about 60 degrees. This arrangement can prevent the jet from being hindered by the wall of the reactor. The relevant experimental results are shown in Table 2.

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Abstract

The present invention relates to a slurry bed reactor, which comprises a reactor housing (1) and parts arranged above the housing (1) or inside the housing (1), wherein the parts comprise an upper portion outlet (13 ), a diversion pipe (17) and a lower portion inlet (12), the diversion pipe (17) is vertically arranged in the housing and is provided for allowing a slurry bed slurry to inflow from the upper portion opening of the diversion pipe (17), the lower portion inlet (12) and a space positioned in the housing and provided for accommodating the slurry bed form a fluid communication, and the upper portion outlet (13) is provided for exporting a gas substance accommodated in the housing. The slurry bed reactor is characterized in that at least a spraying nozzle is arranged in the diversion pipe (17), and the opening direction of the spraying nozzle is downward or obliquely downward. The slurry bed reactor can be used for carrying out the slurry bed reaction such as the Fischer-Tropsch reaction so as to achieve efficient internal circulation in the reaction system.

Description

Technical field: [0001] The invention belongs to the field of chemical equipment and devices, and relates to a high-efficiency internal circulation slurry bed reactor for slurry bed reaction. Background technique [0002] In the organic chemical synthesis process, the gas-liquid-solid three-phase reaction system containing gaseous, liquid and solid reaction materials is a very important system. For example, the slurry bed reactor for Fischer-Tropsch synthesis is an industrial application three-phase reactor. The Fischer-Tropsch synthesis process refers to the synthesis gas (CO+H 2 ) into hydrocarbons and small amounts of organic oxygenates, a chemical conversion process characterized by a strong exotherm. Initially, people tried to use fixed bed and fluidized bed reactors for Fischer-Tropsch reaction operation, but the heat transfer efficiency of these reactors is not ideal, which will bring great difficulties to the reaction control. For this reason, a novel slurry bed r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/22C10G2/00C07C1/04
Inventor 孙予罕廖波刘小浩王小泉赵陆海波张小莽罗艳宁王江峰陈延黄巍孙志强章清安杰逻·阿莫里
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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