Synthesis gas preparing system and method

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

Active Publication Date: 2018-04-03
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • 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 el...

Method used

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  • Synthesis gas preparing system and method
  • Synthesis gas preparing system and method

Examples

Experimental program
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Embodiment 1

[0059] Such as figure 1 As shown, this embodiment provides a synthesis gas preparation system, which includes a solid oxide electrolytic cell 1, a raw material gas supply system, a molten salt supply system, and a synthesis gas mixing chamber 4. In addition, an external direct current is also provided. Power source 5; the cathode of the solid oxide electrolytic cell 1 is connected to the negative electrode of the external DC power source 5, the anode of the solid oxide electrolytic cell 1 is connected to the anode of the external DC power source 5, and the raw gas supply system includes steam generation The steam generator 21 and the protective gas cylinder group 22 are respectively connected to the gas mixing chamber 23, and the gas mixing chamber 23 is connected to the gas mixing chamber 23. The cathode compartment 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 salt circulating p...

Embodiment 2

[0068] The structure of the synthesis gas preparation system and the solid oxidation electrolytic cell of this embodiment is the same as that of Embodiment 1, except that this embodiment includes a plurality of tubular solid oxide electrolytic cells, and the specific parameters of the electrolytic cell and the synthesis gas preparation method are different.

[0069] Such as image 3 As shown, the solid oxide electrolytic cell 1 is set in a hot box. The hot box includes a box 61 and an insulation layer 62 provided on the inner wall of the box. The outer shell of the box 61 is made of steel plate. The thickness of the steel plate is 20 mm, the material of the thermal insulation layer is quartz wool, and the thickness of the thermal insulation layer is 10 cm. The synthesis gas reactor in this example is equipped with 10 serial tubular solid oxide electrolytic cells ( image 3 The section does not show all tubular solid oxide electrolytic cells), and the individual electrolytic cells ...

Embodiment 3

[0073] The structure of the synthesis gas preparation system and solid oxidation electrolytic cell of this embodiment is the same as that of embodiment 1, the difference lies in:

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

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

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Abstract

The invention discloses a synthesis gas preparing system and method. The synthesis gas preparing system comprises a solid oxide electrolytic tank, a feed gas supply system, a fused salt supply systemand a synthesis gas mixing chamber. The solid oxide electrolytic tank comprises a cathode, an anode and an electrolyte. The cathode is in contact with feed gas, and the anode is in contact with the fused salt mixed with carbon powder and a catalyst. According to the synthesis gas preparing system and method, coupling of a solid oxide electrolytic tank technology and a coal gasification technologyis achieved, O2 generated in the electrolysis / co-electrolysis reaction process is subjected to coal gasification reaction with the carbon powder to generate CO, the high temperature fused salt is utilized to serve as a dispersing agent of the carbon powder, the specific surface area of the coal gasification reaction is enlarged, accordingly the transformation efficiency and the yield of the synthesis gas are improved, energy consumption per unit output is reduced, and the specific proportion of needed synthesis gas can be further adjusted. The synthesis gas preparing system and method are suitable for distributed type synthesis gas production factories, and have the characteristics of being high in energy efficiency, simple in operation, high in safety, capable of being produced in batches and the like.

Description

Technical field [0001] The invention relates to a synthesis gas preparation system and method. Background technique [0002] The solid oxide electrolytic cell (SOEC) is a reversible energy conversion device with clean and efficient features. Its working temperature is generally 600~1000℃, which can electrolyze water vapor and carbon dioxide into H 2 , CO and O 2 , To store electrical energy in the form of fuel gas. In addition, the solid oxide electrolytic cell can also simultaneously remove H 2 O / CO 2 Co-electrolysis to generate synthesis gas (H 2 And CO), used to synthesize methanol and other higher-value chemicals. H 2 The presence of O can inhibit carbon deposits on the electrodes of the solid oxide electrolytic cell. This technology can also achieve CO 2 Recycling utilization of water reduces the greenhouse effect. [0003] At present, solid oxide electrolytic cells are used for CO 2 / H 2 In the field of syngas preparation by co-electrolysis, some progress has been made in ma...

Claims

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Application Information

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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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