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Multichannel fixed bed reacter and reaction method

A fixed-bed reactor and reactor technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve problems such as difficulty in completion, and achieve low consumption of reaction materials, uniform temperature and pressure distribution, and shortened evaluation time. Effect

Inactive Publication Date: 2006-09-13
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Screening the catalyst with the best catalytic activity from a library containing hundreds or thousands of target compounds or combinatorial catalysts with expected catalytic performance is difficult for traditional evaluation test methods

Method used

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  • Multichannel fixed bed reacter and reaction method

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Comparison scheme
Effect test

Embodiment approach 1

[0011] 10-channel fixed-bed reactor: 10 fixed-bed reactors with an inner diameter of 6mm, a length of 100mm, and a thickness of 2.5mm are processed by stainless steel materials. Reactants A, B, and C are decompressed and controlled by mass flow meters 1a, 1b, and 1c respectively. Entering the splitter 2, the ends of the 10 gas paths distributed from the splitter are threaded to the front ends of the 10 parallel fixed bed reactors, the ends of the 10 reactors are threaded to the front ends of the multi-way valve, and the ends of the multi-way valve are threaded. It is connected with the mass spectrometer detector, and the excess product is discharged from the vent valve.

Embodiment approach 2

[0013] Hydrogenation of carbon monoxide to methanol: Weigh 1 g of each of the 8 prepared solid powder catalysts and put them into the middle of a titanium alloy reactor with an inner diameter of 8 mm, a length of 120 mm, and a thickness of 3 mm. After tightening both ends of the device, put it into the oil bath, open the ball valve and fill in the reaction gas (H 2 / CO=2) to 1.5MPa for 10 minutes to prove that the reaction vessel is well sealed, then refill the reaction gas three times, replace the air in the system, adjust the temperature of the oil bath to 170°C, adjust the back pressure valve to control the reaction pressure to 1.0MPa, h 2 / CO=2, the products flowing out from the 8 reactors were switched to a mass spectrometer detector (Agilent 5973MSD) through a multi-way valve for online analysis.

Embodiment approach 3

[0015] Synthesis gas one-step synthesis of dimethyl ether: Weigh 0.3g of 50 prepared solid powder catalysts and put them into 50 stainless steel reactors with an inner diameter of 6mm, a length of 160mm, and a thickness of 2mm in the middle of the stainless steel reactor, and both ends are blocked with quartz wool. All 50 reactors were put into the oil bath after being tightened at both ends, and the ball valve was opened to fill in the reaction gas (H 2 / CO=1) to 1.5MPa for 10 minutes to prove that the reaction vessel is well sealed, then refill the reaction gas three times, replace the air in the system, adjust the temperature of the oil bath to 190°C, adjust the back pressure valve to control the reaction pressure to 1.2MPa, h 2 / CO=1, the products flowing out from the 50 reactors are switched to the QIC20 mass spectrometer through the multi-way valve for online analysis.

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Abstract

A multi-channel fixed-bed reactor for screening and evaluating the catalysts used for gas-phase synthesis of methanol, dimether, dimethyl carbonate, etc is composed of specimen feeding system, parallel reactors, oil-bath heater and resultant collecting system. The activities of multiple catalysts can simultaneously researched. Its reaction method is also disclosed.

Description

1. Technical field [0001] The invention relates to a multi-channel fixed-bed reactor and a reaction method suitable for high-throughput screening of chemical catalysts such as methanol, dimethyl ether, and dimethyl carbonate synthesized by a gas-phase method, and belongs to the field of chemical machinery. 2. Background technology [0002] Catalyst design is the most challenging task in the field of heterogeneous catalysis research, although most catalysts currently used in industry are products designed through experience and reaction processes. However, how to design catalysts on a reasonable basis to ensure catalyst quality and stable performance is the goal of developing new catalysts. It is generally believed that the catalytic activity per unit surface area of ​​a catalyst mainly depends on its chemical composition, but for the same chemical composition, its catalytic properties depend to a large extent on the preparation method and preparation conditions of the cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02
Inventor 李忠任军李晋军谢克昌
Owner TAIYUAN UNIV OF TECH
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