Micro-channel LOHC hydrogenation system and method

Abstract

The invention discloses a micro-channel LOHC hydrogenation system and method. According to the invention, the outlet of a pressure pump is connected with the LOHC inlet of a micro-mixer; the outlet of the micro-mixer is connected with the three-phase flow inlet of a micro-reactor; the three-phase flow outlet of the micro-reactor is connected with the inlet of a phase separator; the H2 outlet of the phase separator is connected with the inlet of a compressor; the outlet of the compressor is connected with the H2 inlet of the micro-mixer; and the catalyst outlet of the phase separator is connected with the catalyst inlet of the micro-mixer. LOHC, H2 and a catalyst are mixed in the micro-mixer; H2 is a dispersed phase; LOHC and H2 in the micro-reactor react under the action of the catalyst, and reaction heat is taken away by a cooling working medium; and the catalyst in the phase separator is separated from LOHC mainstream and is sent back to the micro-mixer for recycling. The advantages of high area-volume ratio of microchannels and high specific surface area of the fine-particle catalyst are utilized, so a heat and mass transfer speed is increased, and a hydrogenation reaction speed is increased. According to the invention, the dehydrogenation catalyst and the heat released by the reaction are recycled, and efficient utilization of substances and energy in the chemical process is realized.

Description

technical field [0001] The invention belongs to the field of hydrogen energy, and in particular relates to a microchannel LOHC hydrogenation system and method. Background technique [0002] h 2 As a truly clean fuel, it is considered to be one of the keys to solving future energy and environmental problems. Its production, storage, transportation and use are different from traditional fuels, and the limitation of energy density per unit volume makes H 2 Long-distance transportation is difficult to be as efficient as coal and oil. h 2 The standard boiling point of hydrogen is much lower than that of natural gas, and the storage and transportation costs of liquid hydrogen are too high, and the hydrogen embrittlement problem during pipeline transportation has not been solved. Liquid organic hydrogen carriers (LOHCs) realize H through reversible hydrodehydrogenation reactions 2 Its properties are similar to those of gasoline, and it is compatible with existing gas station e...

AI Technical Summary

Problems solved by technology

Its production, storage, transportation and use are different from traditional fuels, and the limitation of energy density per unit volume makes H 2 Long-distance transportation is difficult to be as efficient as coal and oil

h 2 The standard boiling point of natural gas is much lower than that of natural gas, and the storage and transportation costs of liquid hydrogen are too high, and the problem of hydrogen embrittlement during pipeline transportation has not been solved

Images