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Fluidized bed and method for preparing catalyst by using fluidized bed

A fluidized bed and catalyst technology, which is applied in physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of uneven loading of catalyst active components, uneven impregnation, etc., and achieve uniform impregnation, The effect of uniform product and stable performance

Pending Publication Date: 2017-11-14
BEIJING HUAFU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to solve the uneven impregnation and uneven loading of catalyst active components caused by the uneven contact between the impregnation liquid and the carrier during the preparation of the catalyst by the impregnation method. And other issues

Method used

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  • Fluidized bed and method for preparing catalyst by using fluidized bed
  • Fluidized bed and method for preparing catalyst by using fluidized bed

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Embodiment

[0073] use figure 1 The fluidized bed shown and figure 2 The process flow shown for the preparation of Pt / Al 2 o 3 reforming catalyst. In this embodiment, the cross-sectional area of ​​the enlarged section 102 is three times the cross-sectional area of ​​the fluidized section 101, the gas hole diameter of the gas distributor 401 is 3mm, and the center-to-center distance between two adjacent gas holes is 3 mm of the tube of the gas distributor 401. 3 times the diameter, the gas distributor 401 is conical, and the cross-sectional area of ​​the downcomer 4011 is 40% of the cross-sectional area of ​​the fluidized section 101. The fluidizing gas is air and the reducing gas is CO.

[0074] High-purity γ-Al with a diameter of 3mm 2 o 3 The small ball is used as the carrier, and the chloroplatinic acid with a concentration of 2.45g / L is used as the impregnating solution. per kg γ-Al 2 o 3 Immerse in 0.6L of chloroplatinic acid solution.

[0075] The fluidized bed 1 is fed a...

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Abstract

The invention provides a fluidized bed and a method for preparing a catalyst by using the fluidized bed. The fluidized bed comprises a fluidized bed body, a feeding device, a spraying device, an air inlet device and a discharging device, wherein the fluidized bed body comprises a fluidized section and an enlarged section; the enlarged section is positioned above the fluidized section, the cross sectional area of the enlarged section is larger than the cross sectional area of the fluidized section, and a filter is mounted on the top of the enlarged section; the feeding device comprises a feed screw and a carrier storage tank; the feed screw is respectively connected with the fluidized section and the carrier storage tank; the spraying device is positioned below the feeding device and comprises an impregnation liquid storage tank, a metering pump, a one-way valve and a sprayer which are connected in sequence; the sprayer is arranged on the inner wall of the fluidized section; a gas bypass is arranged on a connecting pipeline between the metering pump and the one-way valve; the air inlet device is positioned below the fluidized section, is respectively connected with the fluidized section and a heater and comprises a gas distributor and a heater; and the discharging device is positioned below the air inlet device and comprises a discharging screw connected with the air inlet device and a cooling jacket arranged on the discharging screw in a sleeving manner. The fluidized bed integrates impregnating, drying, roasting and activating into a whole.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a fluidized bed and a method for preparing a catalyst using it. Background technique [0002] In the catalyst preparation and production process, the impregnation method is a more commonly used method. In the impregnation method, the impregnation of the active ingredient onto the carrier is the most important step. Traditional catalyst support impregnation equipment mainly includes impregnation tanks, impregnation baskets, impregnation mesh belts, impregnation drums, impregnation drums, impregnation ball machines, etc. [0003] When using an impregnation drum for impregnation in the prior art, the carrier is placed in the drum, and an impregnation solution is introduced into the drum so that the solution can impregnate the carrier. The way to introduce the solution is to directly make the liquid flow into the drum. In this case, only by introducing saturated pores ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/02B01J37/08B01J37/16
CPCB01J37/0201B01J37/0236B01J37/08B01J37/16
Inventor 苏二强史雪君余海鹏吴黎阳黄伟郑庆庆李少雨吴道洪
Owner BEIJING HUAFU ENG
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