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Fluidised bed gas-solid contacting device

A gas-solid contact and fluidized bed technology, applied in chemical/physical processes, chemical instruments and methods, etc., can solve problems such as difficulties and low stripping efficiency, reduce dosage, improve gas-solid contact efficiency, and improve utilization rate Effect

Active Publication Date: 2009-05-27
SINOPEC LUOYANG PETROCHEM ENG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fluidized bed gas-solid contact equipment to solve the problems of low stripping efficiency and difficult installation, repair and maintenance in the existing fluidized bed gas-solid contact equipment

Method used

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  • Fluidised bed gas-solid contacting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The fluidized bed gas-solid contact device of the present invention is used as an external riser type FCC device stripper for stripping the spent catalyst entrained with oil and gas from the settler. This embodiment adopts as Figure 8 The shown fluidized bed gas-solid contact equipment, its structure and operation process refer to Figure 8 related instructions. The parameters of the packing layer are shown in Table 1; the symbols of the structural parameters in Table 1 (and Table 2 of Example 2 and Table 3 of Example 3 below) are shown in Table 1. Figure 1 to Figure 7 and related instructions.

[0046] The FCC device is a conventional external riser type FCC device, the density of the processed raw oil is 912 kg / m3 (20°C), and the carbon residue is 3.5w%. The catalyst used is LBO-12 FCC catalyst. The top pressure of the settler is 0.17MPa, and the temperature is 500°C. The pressure of the primary and secondary stripping steam (steam) of the fluidized bed gas-sol...

Embodiment 2

[0049] The fluidized bed gas-solid contacting equipment of the present invention is used as a stripper of an HCC device, and is used for stripping the regenerated catalyst entrained with gas impurities. This embodiment adopts as Figure 9 The shown fluidized bed gas-solid contact equipment, its structure and operation process refer to Figure 9 related instructions. The packing layer parameters are shown in Table 2.

[0050] The raw material oil processed by the HCC device has a density of 910 kg / m3 (20° C.) and a carbon residue of 3.76w%. The catalyst used is LCM-5HCC catalyst. The top pressure of the regenerator is 0.17MPa, and the temperature of the catalyst dense-phase bed is 640°C. The pressure of the primary and secondary stripping steam (steam) of the fluidized bed gas-solid contact equipment is 1.0MPa, the temperature is 350°C, and the stripping line speed is 0.13 m / s.

[0051] The regenerated catalyst from the regenerator entrained gaseous impurities, the content...

Embodiment 3

[0053] The fluidized bed gas-solid contact equipment of the present invention is used as a regenerator of an FCC device to perform intensive regeneration of the catalyst. This embodiment adopts as Figure 10 The shown fluidized bed gas-solid contact equipment, its structure and operation process refer to Figure 10 related instructions. The packing layer parameters are shown in Table 3.

[0054] The FCC device is a conventional external riser type FCC device, the density of the processed raw oil is 913.6 kg / m3 (20°C), and the carbon residue is 4.9w%. The catalyst used is LRC-99 FCC catalyst. The top pressure of the regenerator is 0.14 MPa, the temperature of the catalyst dense-phase bed is 640° C., and the gas linear velocity is 0.73 m / s.

[0055] The spent catalyst from the spent inclined tube had a carbon content of 1.1w% before regeneration. After being regenerated by the fluidized bed gas-solid contact equipment of the present invention, the carbon content of the rege...

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Abstract

The invention discloses a fluidized bed gas-solid contacting device for the petrochemical processing catalytic conversion equipment, to resolve the problem of the existing device that the installation, maintain and maintenance is difficult and the stripping efficiency is low. The contacting device is mounted at least with two groups of filler layers along the axial of tunnel body (5), and the there is gap between the adjacent filler layers. Each group of filler layers is mounted with a filler layer (1) with ramp way, and supported on the support rack (3). The filler layer (1) with ramp way is composed of two rows of stripe boards which acclivitous to the horizontal plane and is intercrossed, the two rows of intercrossed stripe boards forms the ramp way which is acclivitous to the horizontal plane. The preferred plan of the invention is that the filler layer with erective channels is mounted under the filler layer with ramp way in each group of the filler layers. The invention can be used as a steam stripping machine to steam strip the oil gas, hydrocarbon compound or gas impurities in the catalyst, and also used as a regenerator for the regeneration of catalyst.

Description

technical field [0001] The invention belongs to the field of hydrocarbon oil catalytic conversion, and relates to a fluidized bed gas-solid contacting device used in a petrochemical catalytic conversion device. Background technique [0002] Fluidized beds are often used in petrochemical, chemical, combustion, and other types of processes to facilitate the vigorous mixing and contact of fluids and solid particles. This intimate contact can be used between fluids and solid particles to achieve efficient heat transfer, mass transfer and chemical reactions, or to remove fluids entrained by solid particles. A fluidized bed generally uses a fluid (such as water vapor) to pass upward through a bed of solid particles, and its flow rate can suspend these small particles, so that the solid particles can be strongly mixed. In certain types of fluidized beds, solid particles are held in suspension in the bed without being conducted away. In other types of fluidized beds, solid particl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/34
Inventor 张振千田耕雷世远
Owner SINOPEC LUOYANG PETROCHEM ENG CORP
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