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CN-115874207-B - System and method for producing paste magnesium hydride hydrogen based on renewable energy sources

CN115874207BCN 115874207 BCN115874207 BCN 115874207BCN-115874207-B

Abstract

The invention discloses a system and a method for producing pasty magnesium hydride hydrogen production based on renewable energy sources, and relates to the field of renewable energy sources. The system comprises a renewable energy power generation system, a andalusite heat storage system, a steam turbine generator set, a heating unit, a reduction furnace, a high-pressure reaction kettle, a paste magnesium hydride powder, a hydrogen and magnesium hydroxide, wherein the renewable energy power generation system generates electric energy, the andalusite heat storage system is used for heating water by using the electric energy to generate high-temperature water vapor, the andalusite heat storage system is also used for storing heat to generate high-temperature water vapor when the electric energy fluctuates, the steam turbine generator set generates new electric energy by using the high-temperature water vapor, the electrolysis water system uses the new electric energy to electrolyze water to prepare hydrogen, the heating unit heats magnesium hydroxide to generate magnesium oxide, the reduction furnace reduces the magnesium oxide to generate magnesium vapor, the high-pressure reaction kettle is used for generating magnesium hydride powder by mixing and stirring the magnesium hydride powder, an ester compound and a metal salt. The invention improves the hydrogen production efficiency of renewable energy source electrolytic water, realizes the recycling of magnesium hydroxide generated during the hydrogen production of solid magnesium hydride hydrolysis, and reduces the energy waste.

Inventors

  • LU HUIMIN
  • LU XIAOXI

Assignees

  • 易航时代(北京)科技有限公司

Dates

Publication Date
20260508
Application Date
20221212

Claims (9)

  1. 1. A system for producing paste magnesium hydride hydrogen based on renewable energy, comprising: the renewable energy power generation system is used for generating electric energy; The andalusite heat storage system is connected with the renewable energy power generation system and is used for heating water to generate high-temperature steam by utilizing the electric energy; the turbine generator set is connected with the andalusite heat storage system and is used for generating new electric energy by utilizing the high-temperature steam; The water electrolysis system is connected with the steam turbine generator set and is used for electrolyzing water to prepare hydrogen by utilizing the new electric energy; The heating unit is connected with the steam turbine generator set and used for heating magnesium hydroxide to generate magnesium oxide; The reducing furnace is connected with the heating unit and used for reducing the magnesium oxide to generate magnesium vapor; The high-pressure reaction kettle is respectively connected with the reduction furnace and the electrolytic water system and is used for generating magnesium hydride powder by the magnesium vapor and the hydrogen, and the magnesium hydride powder, the ester compound and the metal salt are mixed and stirred to form pasty magnesium hydride; the ester compound is specifically ethyl acetate, phenyl acetate, methyl acetate or butyl acetate; the metal salt is zinc chloride, magnesium chloride, ferric chloride, potassium chloride or sodium chloride.
  2. 2. The system for producing paste magnesium hydride hydrogen generation based on renewable energy of claim 1, further comprising: The vacuum unit is respectively connected with the reduction furnace and the high-pressure reaction kettle and is used for extracting gas to enable the reduction furnace and the high-pressure reaction kettle to be in a vacuum state; and the cooling unit is respectively connected with the reduction furnace and the high-pressure reaction kettle and used for reducing the temperatures of the reduction furnace and the high-pressure reaction kettle.
  3. 3. The system for producing paste magnesium hydride hydrogen generation based on renewable energy of claim 1, further comprising an iron air battery power storage system; The iron-air battery electricity storage system comprises a plurality of iron ion batteries connected in series, wherein each iron ion battery comprises a positive electrode, an electrolyte and a negative electrode.
  4. 4. The system for producing paste magnesium hydride hydrogen production based on renewable energy as claimed in claim 3, wherein said positive electrode comprises a conductive agent, a binder, a semi-crystalline block polymer and MnO 2 -Ag, said electrolyte comprises sodium chloride and ferric trichloride, and said negative electrode is an iron plate.
  5. 5. The system for producing paste magnesium hydride hydrogen generation based on renewable energy of claim 1, wherein said andalusite thermal storage system comprises: The induction coil is connected with the renewable energy power generation system and is used for generating heat; the graphite cylinder is connected with the induction coil and is used for generating heat through electromagnetic induction of the induction coil and conducting the heat; Andalusite composite spheres for storing heat and heating water to produce steam; a circulation pump for extracting the water vapor; and the heat exchanger is connected with the steam turbine generator set and is used for generating the high-temperature steam through the heat exchange of the steam.
  6. 6. The system for producing paste magnesium hydride hydrogen generation based on renewable energy of claim 5, wherein said andalusite thermal storage system further comprises: the heat preservation layer is used for preserving heat of the andalusite composite material ball; the shell is used for accommodating the heat insulation layer, the induction coil, the graphite cylinder and the andalusite composite material balls.
  7. 7. The system for producing paste magnesium hydride hydrogen production based on renewable energy of claim 1, wherein said renewable energy power generation system comprises a wind power generation system, and/or a photovoltaic power generation system.
  8. 8. The system for producing paste magnesium hydride hydrogen generation based on renewable energy of claim 3, wherein said iron air battery power storage system further comprises: the detection module is connected with the iron ion battery and used for detecting the voltage of the iron ion battery; And the control module is respectively connected with the detection module and the iron ion battery and is used for controlling the iron ion battery to start or stop storing electricity according to the voltage.
  9. 9. A method for producing paste magnesium hydride hydrogen based on renewable energy sources, a system for producing paste magnesium hydride hydrogen based on renewable energy sources as claimed in any one of the preceding claims 1-8, comprising: Acquiring electric energy generated by renewable energy sources; the electric energy is heated to generate high-temperature steam, and the heat is stored and the high-temperature steam is generated when the electric energy fluctuates; Generating new electric energy by the high-temperature steam; Preparing hydrogen by electrolyzing the water with the new electric energy; Heating the magnesium hydroxide by the new electric energy to generate magnesium oxide; reducing the magnesium oxide to produce magnesium vapor; The magnesium vapor and the hydrogen gas generate magnesium hydride powder; Mixing and stirring the magnesium hydride powder, the ester compound and the metal salt to form pasty magnesium hydride; the paste magnesium hydride hydrolyzes to produce hydrogen and magnesium hydroxide.

Description

System and method for producing paste magnesium hydride hydrogen based on renewable energy sources Technical Field The invention relates to the technical field of renewable energy sources, in particular to a system and a method for producing pasty magnesium hydride hydrogen based on renewable energy sources. Background Currently, stable or near-stable electricity is generally required when using renewable energy sources to electrolyze water to produce hydrogen. However, renewable energy sources provide electricity with a characteristic of fluctuation, wind power shows up as real-time random fluctuations, and photovoltaic power shows up as regular circadian fluctuations. This will result in the renewable energy source providing power which cannot be fully used for hydrogen production, the renewable energy source generating power has low utilization efficiency and the electrolytic water hydrogen production has low efficiency. The solid magnesium hydride is synthesized by providing heat from the outside, so that energy is wasted, magnesium hydroxide obtained after the solid magnesium hydride is hydrolyzed can not be recycled, and the hydrogen production is difficult to control when the solid magnesium hydride is used. Disclosure of Invention The embodiment of the invention aims to provide a system and a method for producing pasty magnesium hydride hydrogen based on renewable energy sources, so as to improve the efficiency of producing hydrogen by utilizing renewable energy sources to electrolyze water, realize that magnesium hydroxide produced during solid magnesium hydride hydrolysis hydrogen production can be recycled, and realize the control of hydrogen production during solid magnesium hydride hydrolysis reaction. In order to achieve the above object, the embodiment of the present invention provides the following solutions: a system for producing paste magnesium hydride hydrogen based on renewable energy, comprising: the renewable energy power generation system is used for generating electric energy; The andalusite heat storage system is connected with the renewable energy power generation system and is used for heating water to generate high-temperature steam by utilizing the electric energy; the turbine generator set is connected with the andalusite heat storage system and is used for generating new electric energy by utilizing the high-temperature steam; The water electrolysis system is connected with the steam turbine generator set and is used for electrolyzing water to prepare hydrogen by utilizing the new electric energy; The heating unit is connected with the steam turbine generator set and used for heating magnesium hydroxide to generate magnesium oxide; The reducing furnace is connected with the heating unit and used for reducing the magnesium oxide to generate magnesium vapor; the high-pressure reaction kettle is respectively connected with the reduction furnace and the electrolytic water system and is used for generating magnesium hydride powder by the magnesium vapor and the hydrogen, the magnesium hydride powder, the ester compound and the metal salt are mixed and stirred to form pasty magnesium hydride, and the pasty magnesium hydride is hydrolyzed to generate the hydrogen and the magnesium hydroxide. Optionally, the method further comprises: The vacuum unit is respectively connected with the reduction furnace and the high-pressure reaction kettle and is used for extracting gas to enable the reduction furnace and the high-pressure reaction kettle to be in a vacuum state; and the cooling unit is respectively connected with the reduction furnace and the high-pressure reaction kettle and used for reducing the temperatures of the reduction furnace and the high-pressure reaction kettle. Optionally, an iron-air battery power storage system is also included; The iron-air battery electricity storage system comprises a plurality of iron ion batteries connected in series, wherein each iron ion battery comprises a positive electrode, an electrolyte and a negative electrode. Optionally, the positive electrode comprises a conductive agent, a binder, a semi-crystalline block polymer and MnO 2 -Ag, the electrolyte comprises sodium chloride and ferric trichloride, and the negative electrode is an iron plate. Optionally, the andalusite heat storage system includes: The induction coil is connected with the renewable energy power generation system and is used for generating heat; the graphite cylinder is connected with the induction coil and is used for generating heat through electromagnetic induction of the induction coil and conducting the heat; Andalusite composite spheres for storing heat and heating water to produce steam; a circulation pump for extracting the water vapor; and the heat exchanger is connected with the steam turbine generator set and is used for generating the high-temperature steam through the heat exchange of the steam. Optionally, the andalusite heat storage system further comprises: the