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System and method for making hydrogen through ammonia electrolysis and applying hydrogen to coal liquefaction

A technology of coal liquefaction and electrolyte, which is applied in the field of coal liquefaction system, can solve the problems of high cost, limit the promotion of electrolytic hydrogen production method, and consume electric energy, etc., and achieve the effect of reducing overall cost, promoting clean and efficient utilization, and reducing system cost

Pending Publication Date: 2018-08-03
HUANENG CLEAN ENERGY RES INST
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Problems solved by technology

However, because the electrolysis method needs to consume electric energy, the cost is high, which limits the promotion of the electrolytic hydrogen production method.

Method used

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  • System and method for making hydrogen through ammonia electrolysis and applying hydrogen to coal liquefaction
  • System and method for making hydrogen through ammonia electrolysis and applying hydrogen to coal liquefaction

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example 1

[0043] Such as figure 1 As shown, the cathode of the electrolytic cell 2 is a Ni-Co-Fe alloy electrode, the anode is a Ni-Rh alloy electrode, and the composition of the alkaline electrolyte is: 1mol / L KOH, 1mol / L NH 3 . The ammonia in the alkaline electrolyte is supplemented by industrial ammonia water. Such as figure 2 As shown, the alkaline electrolyte prepared in the electrolyte supply system 1 is pumped into the electrolytic cell 2, and an electrolytic reaction occurs under an applied voltage of 0.8V, and a high-purity electrolyte with a purity of 99.9% is produced at the cathode of the electrolytic cell 2. Hydrogen, nitrogen and water with low ammonia content are produced at the anode of electrolytic cell 2. The high-purity hydrogen gas produced at the cathode of the electrolytic cell 2 enters the coal liquefaction system 3, and undergoes a hydrogenation catalytic reaction with the coal slurry under high temperature and high pressure to produce naphtha and diesel oil,...

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Abstract

The invention relates to a system and a method for making hydrogen through ammonia electrolysis and applying the hydrogen to coal liquefaction. The system comprises an electrolyte supplying system, anelectrolysis bath and a coal liquefaction system; the outlet of the electrolyte supplying system is connected with the electrolyte inlet of the electrolysis bath; the cathode hydrogen outlet of the electrolysis bath is connected with the inlet of the coal liquefaction system; the conventional alkali electrolysis bath is utilized; the high-purity hydrogen is obtained through ammonia electrolysis and is supplied to the coal liquefaction system; hydro-liquefaction reaction is performed, so that clean utilization of coal resources is promoted; by adopting the method and the system, energy consumption of electrolytic hydrogen production can be lowered; cost of electrolytic hydrogen production is lowered, and promotion of a green and harmless electrolytic hydrogen production mode is facilitated; ammonia in waste water can be removed with the electrolysis method, so that coupling of waste water treatment and high-efficient electrolytic hydrogen production is realized; the hydrogen made through electrolysis is further applied to the process of coal liquefaction, so that clean and high-efficient utilization of the coal resources is promoted; and the method and the system are of high environment-protection significance and comprehensive benefits.

Description

technical field [0001] The invention relates to the technical fields of hydrogen production and environmental protection, in particular to a system and method for producing hydrogen by ammonia electrolysis for coal liquefaction. Background technique [0002] In recent years, with the continuous strengthening of people's awareness of environmental protection, the development of new energy and the clean and efficient use of fossil energy have received more and more attention. my country's energy structure is more coal, less oil and less gas. For a long time in the future, coal will be the main energy source in our country. Coal liquefaction is an important way of clean and efficient utilization of coal. It directly liquefies coal under high temperature and high pressure conditions to synthesize liquid hydrocarbon fuels through catalytic hydrogenation, and removes sulfur, nitrogen, oxygen and other atoms, thereby reducing environmental pollution. , and improve utilization effi...

Claims

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Application Information

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IPC IPC(8): C25B1/02C25B9/00C10G1/00
CPCC10G1/002C25B1/02C25B9/00
Inventor 闫巍余智勇张畅张欢马军
Owner HUANENG CLEAN ENERGY RES INST
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