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Rotary fluidized bed device and using method thereof

A swirling flow, fluidized bed technology, used in chemical instruments and methods, hearth furnaces, lighting and heating equipment, etc., can solve problems such as limitations, and achieve the effect of small resistance and easy transportation

Inactive Publication Date: 2008-02-13
阿克塞尔·德布罗克维尔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Correspondingly, the movement of the fluid becomes more direct, and this causes the fluid to flow backwards along the central conduit downstream of the discharge port, and creates turbulence to carry the solid particles towards the outlet, which limits the possibility of forming a dense fluidized bed in the cylindrical chamber. possibility

Method used

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  • Rotary fluidized bed device and using method thereof
  • Rotary fluidized bed device and using method thereof
  • Rotary fluidized bed device and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0293] Example 1: Conversion of cracked gasoline to light olefins using a unit according to the invention

[0294] For illustration, the cylindrical reaction chamber shown in Figure 8 has a diameter of 1 m, a length of 4.5 m and an average thickness (width) of 0.23 m, and a volume of approximately 2.5 m 2 . Fluid 100 consists of cracked gasoline preheated to high temperature and has a density of about 5kg / m at injection temperature and pressure 3 , the fluid is injected into the injector 105 at a high velocity (for example, 200 to 300m / s, with a submerged pressure of 100 to 200,000 Pa) to superheat to the required temperature (over 600°C), while the recirculated fluid is brought into the heating furnace 102, and then Enter the reaction chamber, where it is sprayed, for example, at a speed of 60m / s through 17 spray slits with a thickness of 0.005m, and the flow rate is about 23m 3 / s or 400 tons per hour. (This higher flow rate requires a central conduit through the reaction...

example 2

[0296] Example 2: Drying of crop particles using the device according to the invention

[0297] Produce pellets may be dried according to the diagram in FIG. 9 . The reaction chamber or drying chamber can have the same dimensions as in the above example. In this case, fresh air 112 is led via pipe 8.1, optionally through a moisture condenser 113, through the ends of the reaction chambers on the side of the grain outlet 19 to heat them while simultaneously cooling them and completing their dry. This air 11.1 is then sucked off by a centrifugal compressor or fan 108.1 through line 10.1 and recycled to the reactor via line 8.2 after additional heating in heater 102. After being recirculated several times, the air 11.2 is sucked out by the centrifugal compressor or fan 108.2 through the line 8.3 and after being heated by the heater 102 is recycled to the reactor via the line. After several recirculations, the moisture-laden air cooled by the grain, which is supplied via line 16...

example 3

[0301] Example 3: Gas phase polymerization of ethylene and octene using a device according to the invention

[0302] Gas-phase polymerization of ethylene and octene is only possible at low pressures in the reactor, not more than several times atmospheric pressure, since the octene partial pressure is limited to 0.2 bar at 70°C. At these pressures, the heat generated by these highly exothermic reactions can only be removed using relatively inert catalysts or by diluting the active gas mixture with an inert gas thereby reducing the reaction rate, or for example according to the diagram shown in Figure 10 Passing large quantities of gas through the fluidized bed to obtain a rotating fluidized bed removes, thus increasing installation costs.

[0303] The octene can be sprayed into the reaction chamber as fine droplets through the tube 121 of the central conduit and / or can be supplied in gaseous state, simultaneously supplied with fresh ethylene 119 and recirculated via one or more...

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Abstract

The invention concerns a device for injecting fluids inside a rotary fluidized bed wherein the fluid jets are oriented in the rotational direction of the fluidized bed and surrounded with at least one deflector delimiting around said jets a space generally convergent then divergent and upstream of said jet passages through which suspended particles in the rotary fluidized bed can penetrate so as to be mixed with the fluid jets which transfer to them part of their kinetic energy before leaving said space.

Description

technical field [0001] The present invention relates to a device for a rotating fluidized bed and to a device for injecting fluid into the rotating fluidized bed in a fixed circular reaction chamber, and also to the use of this device for catalytic polymerization, drying, impregnation, coating Other treatments of solid particles coated or suspended in a rotating fluidized bed, or methods of performing cracking, dehydrogenation, or other catalytic conversion of fluids. Background technique [0002] Fluidized beds in which solid particles are suspended in a fluid to form transport fluids are well known. When the fluid is tangentially injected into the side wall of the cylindrical reactor, part of its kinetic energy is transferred to the solid particles to make them rotate. If the energy transfer is sufficient, the rotational motion generates centrifugal force that can hold the solid particles along the inner wall of the reactor, thereby forming a rotating solid The surface of...

Claims

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Application Information

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IPC IPC(8): B01J8/14B01J8/36
CPCB01J8/384B01J8/20F26B17/107B01J8/1818F26B3/082B01J8/1872B01J2208/0061B01J8/14B01J8/00B01J8/36
Inventor 阿克塞尔·德布罗克维尔
Owner 阿克塞尔·德布罗克维尔
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