A synthesis gas preparation system and method thereof

A preparation system and synthesis gas technology, applied in the field of synthesis gas preparation system, can solve the problems of high energy consumption per unit output, insufficient utilization of raw materials, low conversion efficiency, etc., to improve conversion efficiency and yield, reduce energy consumption, and ensure safety sex high effect

Active Publication Date: 2018-11-27
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of insufficient utilization of raw materials, low conversion efficiency, and high energy consumption per unit output when the solid oxide electrolytic cell technology is used in the prior art to prepare synthesis gas. Efficient synthesis gas preparation system and method coupled with electrolysis technology and coal gasification technology

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  • A synthesis gas preparation system and method thereof
  • A synthesis gas preparation system and method thereof
  • A synthesis gas preparation system and method thereof

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Embodiment 1

[0059] Such as figure 1 As shown, the present embodiment provides a synthesis gas preparation system, which includes a solid oxide electrolytic cell 1, a feed gas supply system, a molten salt supply system and a synthesis gas mixing chamber 4, in addition, an external direct current Power supply 5; the cathode of the solid oxide electrolytic cell 1 is connected to the negative pole of the external DC power supply 5, the anode of the solid oxide electrolytic cell 1 is connected to the positive pole of the external DC power supply 5, and the raw material gas supply system includes steam generation device 21, shielding gas cylinder set 22 and gas mixing chamber 23, the steam generator 21 and the shielding gas cylinder set 22 are respectively connected to the gas mixing chamber 23, the gas mixing chamber 23 and the The cathode chamber of the solid oxide electrolytic cell 1 is connected, and the molten salt supply system includes a carbon powder / molten salt mixer 31 and a molten sa...

Embodiment 2

[0068] The synthesis gas preparation system and the structure of the solid oxide electrolytic cell in this embodiment are consistent with those in Embodiment 1, the difference is that this embodiment includes multiple tubular solid oxide electrolytic cells, and the specific parameters of the electrolytic cells are different from the synthesis gas preparation method.

[0069] Such as image 3 As shown, the solid oxide electrolytic cell 1 is arranged in a hot box, and the hot box includes a box body 61 and an insulating layer 62 arranged on the inner wall of the box body, and the shell material of the box body 61 is a steel plate. The thickness of the steel plate is 20mm, the material of the insulation layer is quartz wool, and the thickness of the insulation layer is 10cm. In the synthesis gas reactor in the present embodiment, 10 series-connected tubular solid oxide electrolytic cells ( image 3 The cross-section does not represent all tubular solid oxide electrolytic cells),...

Embodiment 3

[0073] The structure of the synthesis gas preparation system and the solid oxidation electrolytic cell of this embodiment is consistent with that of Embodiment 1, the difference is that:

[0074] (1) In the synthesis gas preparation system of the present embodiment, the anode is an LSM thin film electrode;

[0075] (2) In the synthesis gas preparation method of the present embodiment, the molten salt is CaCl 2 / NaCl mixed system molten salt, wherein the Fe catalyst content is 0.5%, and the operating temperature of the solid oxide electrolytic cell is 900°C.

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Abstract

The invention discloses a synthesis gas preparation system and a method thereof. The synthesis gas preparation system includes a solid oxide electrolysis cell, a feed gas supply system, a molten salt supply system and a synthesis gas mixing chamber; the solid oxide electrolysis cell includes A cathode, an anode and an electrolyte, the cathode is in contact with the gas phase of the raw material, and the anode is in contact with the molten salt mixed with carbon powder and catalyst. The present invention realizes the coupling of solid oxide electrolytic cell technology and coal gasification technology, produces CO by gasifying O2-produced in the electrolysis / co-electrolysis reaction process with carbon powder coal, and uses high-temperature molten salt as a dispersant for carbon powder, Increase the specific surface area of ​​the coal gasification reaction, thereby improving the conversion efficiency and yield of synthesis gas, reducing the energy consumption per unit of output, and can further adjust the specific ratio of the required synthesis gas; the invention is suitable for distributed synthesis gas production plants, It has the characteristics of high energy efficiency, simple operation, high safety, and mass production.

Description

technical field [0001] The invention relates to a synthesis gas preparation system and a method thereof. Background technique [0002] The solid oxide electrolytic cell (SOEC) is a reversible energy conversion device with the characteristics of cleanliness and high efficiency. Its working temperature is generally 600-1000°C, and it can electrolyze water vapor and carbon dioxide into H 2 , CO and O 2 , store electrical energy in the form of fuel gas. In addition, the solid oxide electrolytic cell can also convert H 2 O / CO 2 Co-electrolysis to generate synthesis gas (H 2 and CO), for the synthesis of various higher value chemicals such as methanol. h 2 The presence of O can inhibit the carbon deposition on the electrodes of solid oxide electrolytic cells, and this technology can also realize CO 2 recycling and reduce the greenhouse effect. [0003] Currently, solid oxide electrolysis cells are used for CO 2 / H 2 In the field of O co-electrolysis to prepare synthesis ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/02C25B1/00C25B9/06C25B9/17
CPCC25B1/00C25B1/02C25B9/17
Inventor 关成志彭程陈新冰肖国萍王建强
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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