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Tubular ceramic membrane reactor and methanol synthesis method implemented by using same

A technology for synthesizing methanol and ceramic membranes, applied in chemical instruments and methods, chemical/physical/physical-chemical processes of applying energy, cells, etc. The effect of improving conversion rate and methanol yield, saving fossil fuel resources, and reducing consumption

Inactive Publication Date: 2015-05-20
JINGDEZHEN CERAMIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, CO 2 gas hydrogenation (H 2 ) to synthesize methanol for CO 2 Resource utilization and elimination of CO 2 The harm to the environment is of great significance, but this methanol synthesis method requires high pressure and consumes huge energy and power just like the traditional method of synthesizing methanol through fossil resources, and CO 2 The conversion rate is low (2 other environmental pollutants

Method used

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  • Tubular ceramic membrane reactor and methanol synthesis method implemented by using same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of electrolytic cell:

[0037] (1) Using NiO and BaZr 0.3 Ce 0.5 Y 0.16 Zn 0.04 o 3-δ (BZCYZ) mixture (60%:40% by mass) was formed by phase inversion method to prepare a cathode support body 4 with an outer diameter of 2mm, which was dried and fired at 1250°C for 4 hours;

[0038] (2) BaZr with a thickness of 20 μm was prepared on the cathode support 4 by vacuum-assisted dip-coating method 0.3 Ce 0.5 Y 0.16 Zn 0.04 o 3-δ (BZCYZ) Electrolyte film 5 is fired at 1400°C for 4 hours after drying;

[0039] (3) Prepare La on the surface of the electrolyte film 5 by spin coating 0.6 Sr 0.4 co 0.2 Fe 0.8 o 3?δ (LSCF)-BaZr 0.3 Ce 0.5 Y 0.16 Zn 0.04 o 3-δ (BZCYZ) anode, and fired at 1000°C for 2 hours to finally make a proton-type microtube electrolysis battery with the structure of NiO-BZCYZ / BZCYZ / LSCF-BZCYZ.

[0040] The structure of the tubular ceramic membrane reactor:

[0041]The internal channel of the proton type microtube electrolytic cel...

Embodiment 2

[0051] The preparation of the electrolytic cell and the structure of the tubular ceramic membrane reactor are the same as in Example 1.

[0052] Methanol synthesis method:

[0053] use figure 1 The tubular ceramic membrane reactor with the structure shown is used for methanol synthesis. During the synthesis process, CO 2 The conversion rate is 43.7%, and the methanol yield is 25.4%, and the concrete steps are as follows:

[0054] The first step: heating the temperature of the microtube electrolytic cell 11 to 650°C through the tubular gradient electric furnace 1;

[0055] Second step: the cathode support body 4 of the microtube electrolytic cell 11 is connected to the negative pole of the DC power supply, the anode 6 of the microtube electrolytic cell 11 is connected to the positive pole of the DC power supply, and the voltage of the DC power supply is 2V;

[0056] Step 3: Introduce hydrogen into the tubular cathode chamber 3 to reduce the NiO on the cathode support 4 of th...

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Abstract

The invention relates to a tubular ceramic membrane reactor and a methanol synthesis method implemented by using the same. The method is used for synthesizing methanol through the tubular ceramic membrane reactor by taking enormously discharged greenhouse gas CO2 and water vapor as raw material gas, namely, under the action of a high temperature (400-800 DEG C) and an external electric field (1.2-2.5 V), water is subjected to electrolytic reaction at the anode of a proton type microtubular electrolytic cell so as to generate H<+>, the H<+> generated by the anode is transmitted to the cathode of the electrolytic cell through a proton conductor electrolyte membrane, CO2 fed into a cathode chamber is reacted with the high-activity H<+> and e<-> on a gas / solid interface in a Ni-based porous cathode with catalytic activity, so that the methanol is synthesized at normal pressure. The methanol synthesis method has the characteristics of energy conservation, emission reduction, environmental friendliness and capability of mass production, so that the method has the advantage of broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional ceramic materials, and in particular relates to a tubular ceramic membrane reactor and a method for synthesizing methanol thereof. Background technique [0002] Methanol is a widely used raw material in the chemical and energy industries. It is widely used in the production of plastics, synthetic fibers, synthetic rubber, paints, spices, medicines and pesticides, etc., and is also an important organic solvent. Chemical products produced with methanol as raw materials can be There are hundreds of species. Methanol is also an environmentally friendly and clean fuel, and its function as a substitute for petroleum raw materials or products is becoming more and more obvious (methanol fuel and its deep-processed product dimethyl ether can be used as economical and cheap transportation fuels), matching the existing energy structure, have a broad vision of application. [0003] At present, the common...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B3/00C25B3/04C25B9/00B01J8/06B01J19/08C25B3/25
Inventor 张小珍胡健平周健儿汪永清江瑜华巫春荣章婧
Owner JINGDEZHEN CERAMIC UNIV