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Fluidised bed gas and solid contacting device

A gas-solid contact, fluidized bed technology, applied in chemical/physical processes, chemical instruments and methods, etc., can solve the problems of difficult stripping efficiency and low, and achieve improved gas-solid contact efficiency, easy installation, and good strength. Effect

Active Publication Date: 2007-10-17
LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a fluidized bed gas-solid contact equipment to solve the problems of installation, overhaul and maintenance and low stripping efficiency existing in the existing fluidized bed gas-solid contact equipment

Method used

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  • Fluidised bed gas and solid contacting device

Examples

Experimental program
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Effect test

Embodiment 1

[0043] 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. In this embodiment, the fluidized bed gas-solid contacting equipment as shown in FIG. 6 is adopted. For its structure and operation process, refer to the related description of FIG. 6 . 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) refer to Figures 1 to 5 and related descriptions.

[0044] The FCC device is a conventional external riser type FCC device, the density of the processed raw oil is 923.6 kg / m3 (20°C), and the carbon residue is 4.04w%. The catalyst used is MLC-500 FCC catalyst. The top pressure of the settler is 0.16MPa, and the temperature is 500°C. The pressure of the primary and secondary stripping steam (steam) of the fluidized bed gas-so...

Embodiment 2

[0047] 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 the fluidized bed gas-solid contacting equipment as shown in FIG. 7 , and its structure and operation process refer to the relevant description of FIG. 7 . The packing layer parameters are shown in Table 2.

[0048] The raw material oil processed by the HCC device has a density of 890 kg / m3 (20°C) and a carbon residue of 3.68w%. The catalyst used is LCM-5 HCC catalyst. The top pressure of the regenerator is 0.18MPa, and the temperature of the catalyst dense-phase bed is 650°C. The pressure of the primary and secondary stripping steam (water vapor) of the fluidized bed gas-solid contact equipment is 1.0MPa, the temperature is 250°C, and the stripping line speed is 0.12 m / s.

[0049] The regenerated catalyst from the regenerator entrained with gaseous im...

Embodiment 3

[0051] 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 the fluidized bed gas-solid contacting equipment as shown in FIG. 8 , and its structure and operation process refer to the related description of FIG. 8 . The packing layer parameters are shown in Table 3.

[0052] The FCC device is a conventional external riser type FCC device, the density of the processed raw oil is 910.9 kg / m3 (20°C), and the carbon residue is 4.98w%. The catalyst used is CHZ-4 FCC catalyst. The top pressure of the regenerator is 0.121MPa, the temperature of the catalyst dense-phase bed is 650°C, and the gas linear velocity is 0.75 m / s.

[0053] The spent catalyst from the spent inclined tube had a carbon content of 1.2w% before regeneration. After being regenerated by the fluidized bed gas-solid contact equipment of the present invention, the carbon content of th...

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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 composed of a first filler layer (1) at the upper and a second filler layer (2) at the lower, which are contacted and supported on the support rack (3). The first filler layer is a filler layer with stereoscopic grid channels composed of rows of stripe boards, two adjacent of which has a different trend of the tilt with the horizontal plane and is intercrossed. The second filler layer is a filler layer with erective channels, and composed of stripe board groups, which is perpendicular to horizontal plane and intercrossed. 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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IPC IPC(8): B01J8/34
Inventor 张振千田耕雷世远
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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