Device and method for preparing supported catalyst by spraying

A supported catalyst and catalyst carrier technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve problems such as uniform distribution of metals, and achieve the effect of avoiding uneven color

Pending Publication Date: 2018-03-27
XIAN CATALYST NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the carrier with less adsorption amount of impregnating liquid and small specific surface area, there is no effective method to evenly distribute the metal o

Method used

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  • Device and method for preparing supported catalyst by spraying
  • Device and method for preparing supported catalyst by spraying
  • Device and method for preparing supported catalyst by spraying

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] Such as figure 1 As shown, the present invention includes a pot-bellied glass tube 1 and an oil bath 2. The pot-bellied glass tube 1 is open at both ends, and has a reaction chamber 1-1 for placing catalyst carrier particles in the middle. The belly glass tube 1 is set on the oil bath 2 through the bracket 12, the belly glass tube 1 is connected to the motor 10 for driving the belly glass tube 1 to rotate through the transmission 11, and one end of the belly glass tube 1 Connected to the spray can 3 for placing the immersion liquid, the spray tube 4 of the spray can 3 extends into the reaction chamber 1-1 of the pot-bellied glass tube 1, the spray tube 4 is equipped with a nozzle 5, the nozzle 5 Located at the center of the reaction chamber 1-1, a first sealing plug 6 is provided between the nozzle 4 and the pot-bellied glass tube 1, and the other end of the pot-bellied glass tube 1 passes through the L-shaped bend 8 The second sealing plug 7 is connect...

Example Embodiment

[0046] Example 2

[0047] The method for preparing a supported catalyst by spraying using the device of Example 1 includes the following steps:

[0048] Step 1. Place the catalyst carrier particles in the reaction chamber 1-1 of the pot-bellied glass tube 1, and at the same time place the prepared immersion liquid in the watering can 3, and then place the watering can 3 and the L-shaped elbow containing the immersion liquid 8 are assembled on the pot-bellied glass tube 1 through the first sealing plug 6 and the second sealing plug 7 respectively, and the watering can 3 and the L-shaped bend 8 are installed on the pot-bellied glass tube through the first sealing plug 6 and the second sealing plug 7 respectively At both ends of the tube 1, the pot-bellied glass tube 1 is then installed in the oil bath 2 through a bracket 12, and the pot-bellied glass tube 1 is connected to the motor 10 through a transmission 11;

[0049] Step 2: Turn on the oil bath 2 to heat the carrier particles ins...

Example

[0059] Comparing Example 2 and Comparative Example 1, it can be found that the device of the present invention can prepare a highly active supported catalyst with uniform active components and the active components are all supported on the surface of α-alumina.

[0060] The supported catalyst particles prepared in Example 2 and Comparative Example 1 were used in the reaction of CO oxidative coupling to prepare dimethyl oxalate. Under the same reaction conditions, the catalyst performance of the supported catalysts prepared in Example 2 and Comparative Example 1 was measured. After evaluation, the reaction conditions are: the loading amount of the supported catalyst is 0.2g, the reaction temperature is 130°C, the pressure is 0.1MPa, and the raw material gas is composed of the following volume percentage gases: 28% CO, 20% CH 3 ONO, 5% Ar and 47% N 2 , The space velocity of the raw gas is 2000h -1 . The single-pass conversion rate of carbon monoxide in the reaction using the support...

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Abstract

The invention discloses a device for preparing a supported catalyst by spraying. The device comprises a pot-bellied glass tube and an oil bath pan, wherein the two ends of the pot-bellied glass tube are provided with openings, and a reaction chamber is arranged in the middle of the pot-bellied glass tube; the pot-bellied glass tube is arranged on the oil bath pan through a support, and the pot-bellied glass tube is connected with a motor through a transmission device; one end of the pot-bellied glass tube is connected with a watering pot, and a spray pipe of the watering pot extends into the reaction chamber of the pot-bellied glass tube; a nozzle is arranged on the spray pipe, and a first sealing plug is arranged between the spray pipe and the pot-bellied glass tube; the other end of thepot-bellied glass tube is connected with an L-shaped elbow pipe through a second sealing plug, and the pipe body of one end, away from the pot-bellied glass tube, of the L-shaped elbow pipe is sleevedwith a condensing device. The invention also discloses a method for preparing the supported catalyst by spraying by utilizing the device. The device provided by the invention has reasonable design and simple structure, can prepare the catalyst in which uniformly dispersed active components are dispersed on the surface of a carrier, and provides a novel solution for preparing the granular supported catalyst in a laboratory.

Description

technical field [0001] The invention belongs to the technical field of preparation of supported catalysts, and in particular relates to a device and method for preparing supported catalysts by spraying. Background technique [0002] The impregnation method is one of the most commonly used methods for preparing supported granular fixed-bed or fluidized-bed catalysts in the laboratory. The carrier is usually a particle with a certain geometric size, generally spherical and cylindrical, with a spherical size of 0.5-5mm and cylindrical The diameter is 1-6mm, and the length is 2-10mm. There are many commonly used carriers for fixed bed or fluidized bed, such as activated carbon, alumina, molecular sieve and silica. Generally, the catalyst prepared by the granular activated carbon carrier can hardly be seen to be uniform in appearance, because the prepared catalyst is usually black, which is the same color as the carrier. Carriers such as alumina, silica, and molecular sieves ar...

Claims

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Application Information

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IPC IPC(8): B01J37/02
CPCB01J37/0201B01J35/026B01J35/08
Inventor 林涛万克柔程杰张炳亮张之翔曾永康曾利辉高武
Owner XIAN CATALYST NEW MATERIALS CO LTD
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