Pulse type lift pipe regenerator

A riser and regenerator technology, applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low carbon content of catalysts, low charring strength, and reduced regenerator size, etc.

Inactive Publication Date: 2009-07-15
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

The bubbling bed coke regeneration process and equipment are simple, but the catalyst reserves are large, the coke strength is low (60-180Kg/t.h) and the regeneration effect is poor; the catalyst regeneration process of the turbulent bed regenerator is more complicated, and the catalyst reserves are large. However, the charring intensity is high (180-300Kg/t.h) and the regeneration effect is good; the rapid bed regeneration process is complicated, but the catalyst storage is small, the charring intensity is high (400-700Kg/t.h) and the regeneration effect is good; The structure of the tube regenerator is simple, with the

Method used

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  • Pulse type lift pipe regenerator

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[0011] Below in conjunction with accompanying drawing, the present invention is described in detail: in actual design and manufacture, the present invention is to form the combination of large pipe (3) and small pipe (4) by alternately reducing and expanding the pipe diameter of riser regenerator (6) In the impulse riser, the pipe diameter ratio of the large pipe (3) to the small pipe (4) is 1.3-3. During operation, the spent agent added from the regenerant inlet (2) and the air entering from the riser inlet (1) form a rapid turbulent bed scorching in the first large pipe (3) at the lower part of the riser, which solves the problem of Difficulty in burning the riser tube; when the accelerated spent agent enters the small tube, the particles are accelerated. When the accelerated motion ends, the diameter of the riser tube suddenly expands, and the particles enter the large tube by inertia; the particles are in the process of movement. Due to the resistance, it decelerates conti...

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Abstract

The invention provides a pulse-type lift pipe regenerator which belongs to an improvement on a fluidized bed regenerator structure. The pulse-type lift pipe regenerator mainly comprises a regenerating lift pipe, a big pipe, a small pipe, a regenerating agent inlet, a lift pipe inlet, a lift pipe outlet, and the like. The invention is mainly characterized in that the pipe diameter of the lift pipe regenerator reduces and expands alternately to form the pulse-type lift pipe combining the big pipe and the small pipe.

Description

1. Technical field [0001] The pulse type riser regenerator provided by the invention belongs to the structural improvement of the fluidized bed regenerator. 2. Background technology [0002] The regeneration of catalytic cracking catalyst is of great significance to the catalytic cracking process. The regenerator is one of the core equipment of the petroleum catalytic cracking unit and also the key equipment of other circulating fluidized bed reaction units. Existing regenerators mainly include bubbling bed, turbulent bed, fast bed and riser regenerator. The bubbling bed coke regeneration process and equipment are simple, but the catalyst reserves are large, the coke strength is low (60-180Kg / t.h) and the regeneration effect is poor; the catalyst regeneration process of the turbulent bed regenerator is more complicated, and the catalyst reserves are large. However, the charring intensity is high (180-300Kg / t.h) and the regeneration effect is good; the rapid bed regeneration...

Claims

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Application Information

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IPC IPC(8): B01J38/26
Inventor 田原宇乔英云盖希坤
Owner SHANDONG UNIV OF SCI & TECH
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