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Gas-liquid distributor for fluidized bed

A gas-liquid distributor, fluidized bed technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of reducing the service life and operation cycle of the catalyst, increasing the pressure drop of the reactor, and impairing the performance of the catalyst. The effect of improving the internal utilization rate, increasing the filling space, and improving the processing capacity

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Uneven material distribution will lead to temperature differences on the radial section, especially after the reactor size is enlarged, and even local overheating will occur, which will damage the performance of the catalyst, thereby greatly reducing the service life and operation cycle of the catalyst
In addition, due to the small amount of impurities in the raw materials and the rust and dirt entrained by impacting the pipes and equipment when they flow through the system, if they accumulate on the surface of the catalyst bed, they will quickly block the circulation channels, resulting in uneven distribution of raw materials and greatly affecting Catalyst effect even increases reactor pressure drop

Method used

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  • Gas-liquid distributor for fluidized bed
  • Gas-liquid distributor for fluidized bed
  • Gas-liquid distributor for fluidized bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mix the catalyst powder of FZC-11 with alumina and add deionized water in a kneader, knead and press it into a plastic body, then pour it into the mold of the catalytic material net, bake it at 600 ° C for 15 hours, remove the mold to obtain the catalyst composition Catalytic Materials Network. Install the catalytic material mesh on the distribution plate through bolts, and the opening ratio on the distribution plate, that is, the ratio of the catalytic material mesh on the cross section of the distribution plate, is 16%, and a gas-liquid distributor is obtained.

Embodiment 2

[0029] Mix the catalyst powder of FZC-11 with alumina and add deionized water in a kneader, knead and press to form a plastic body. The mold is made of stainless steel 321 material, which is composed of an upper seal and a lower seal. After the upper seal and the lower seal are connected, the catalyst The components are poured into the mold, calcined at 600° C. for 15 hours, calcined, and then the upper and lower seals are opened to obtain a catalytic material net composed of catalyst.

Embodiment 3

[0031] Using the gas-liquid distributor of the present invention to carry out the hydrogenation reaction of fluidized bed residue, the reaction conditions are: reaction temperature 396°C, reaction pressure 15MPa, hydrogen-oil ratio 500:1, volume space velocity 0.4h -1 . The properties of the residual oil are shown in Table 1, and the evaluation results are shown in Table 2. The reactor is filled with FZC-24 produced by Fushun Petrochemical Research Institute.

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Abstract

The invention discloses a gas-liquid distributor for a fluidized bed, which includes a catalytic material screen and a distributor disk. The catalytic material screen is fixed in holes of the distributor disk and is prepared by sintering a material having catalytic activity through the following steps: mixing a catalyst with a binder and kneading the mixture to form a plastic body, and pouring the plastic body into a die of the catalytic material screen, and roasting the plastic body to prepare the catalytic material mesh composed of the catalyst. The gas-liquid distributor can be used in reactor systems with upward movement of material flows therein, such as a catalytic cracking reactor, a fluidized bed reactor and the like.

Description

technical field [0001] The invention relates to a gas-liquid distributor, in particular to a gas-liquid distributor for a fluidized bed reactor. Background technique [0002] The reactor used in the refining or chemical process is the core of the process. The development trend is to use the space of the reactor as much as possible to load more catalysts to maximize the efficiency of the refining or chemical process. The gas-liquid distributor makes the material evenly distributed in the reactor, and the reactant is in good contact with the catalyst, which is an important factor for giving full play to the performance of the catalyst and the stable operation of the device. Uneven material distribution will lead to temperature differences on the radial section, especially after the size of the reactor is enlarged, and even local overheating will occur, which will damage the performance of the catalyst, thereby greatly reducing the service life and operation cycle of the cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24
Inventor 刘建锟杨涛贾丽贾永忠葛海龙孟兆会
Owner CHINA PETROLEUM & CHEM CORP