CN201815306U - Device utilizing aromatic compound to continuously absorb and emit hydrogen - Google Patents

Abstract

The utility model discloses a device utilizing aromatic compound to continuously absorb and emit hydrogen, wherein an air inlet, a hydrogen-absorbing hydrogen storage container, a first valve, a high-pressure reaction kettle, a second valve and a dehydrogenating hydrogen storage container are sequentially connected; a first emptying valve and a first pressure gauge are arranged on the hydrogen-absorbing hydrogen storage container; the hydrogen-absorbing hydrogen storage container, a first sensor, a first itinerant detector and a computer are sequentially connected; a third emptying valve and a third pressure gauge are arranged on the dehydrogenating hydrogen storage container; the dehydrogenating hydrogen storage container, a second sensor, a second itinerant detector and the computer are sequentially connected; and a second pressure gauge and a second emptying valve are arranged on the high-pressure reaction kettle. The device automatically records the variation of hydrogen pressure during the reaction process through the computer and repeatedly circulates at a suitable reaction temperature, so as to continuously absorb and emit hydrogen. The device has small occupied area and simple structure, is convenient to dismount, flexible to use, and extremely convenient to operate, saves investment, and has high production efficiency.

Description

Utilize the device of continuous absorption of aromatic compound and releasing hydrogen gas

Technical field

The utility model relates to the storage and the conveying technology of hydrogen, relates in particular to a kind of device that utilizes continuous absorption of aromatic compound and releasing hydrogen gas.

Background technology

Hydrogen energy source has that the source is abundant, renewable, energy density is high and characteristics such as cleaning, be one of the most potential clean energy resource, hydrogen storage capability height under the cryogenic conditions in the exploitation, the hydrogen storage material that cost is low are current important development directions. the foundation of weighing a kind of hydrogen storaging and transport technology quality has several aspects such as storage hydrogen cost, hydrogen-storage density and security.The International Energy Agency regulation, practical hydrogen storage system must reach 5% (mass fraction) and 40kg/m ³The index of (volume hydrogen-storage density).Because hydrogen has light weight, be difficult to compression, liquefaction, inflammable, explosive, can see through chamber wall under the high pressure, easily form hydride and produce the characteristics of hydrogen embrittlement, therefore seek and exploration can be applicable to that the technology of extensive storage hydrogen will be an important research project with the container metal.

Compare with hydrogen storage methods such as cryogenic liquefying storage hydrogen, hydride hydrogen-storing, high pressure compressed Chu Qing, organic liquid hydride storage hydrogen has advantages such as hydrogen-storage density height, transportation safety, is a kind of very promising hydrogen storage technology.Benzene, toluene and naphthalene etc. are more common desirable liquid hydrogen storage materials, and its hydrogen storage content is higher than traditional high pressure compressed storage hydrogen and hydride hydrogen-storing.Use organic liquor never to cause enough attention (although it has a lot of advantages) in the past as hydrogen storage material, this mainly is because dehydrogenation reaction is the process of a strong heat absorption, traditional organic hydride dehydrogenation reaction conditions is relatively harsher, and reaction temperature higher (600-700K) device that needs is complicated.Especially in the time of need under the gaseous state condition, carrying out dehydrogenation, make the difficult control of reaction.

Recently, U.S. Air Prod ﹠ Chem (Air Products) they patent US 7101530 and US7351395 in first by having studied heteroaromatic type molecule in the use aspect the organic liquor Chu Qing, discover that heteroatomic adding can reduce the required caloric receptivity of dehydrogenation reaction in the aromatic compound, make the hydrogen that on automobile, uses organic hydride to discharge become possibility as power.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of device and method that utilizes continuous absorption of aromatic compound and releasing hydrogen gas is provided.

Utilize the device of continuous absorption of aromatic compound and releasing hydrogen gas to comprise air inlet, first Pressure gauge, inhale hydrogen hydrogen storehouse, first atmospheric valve, first valve, autoclave, second Pressure gauge, second atmospheric valve, second valve, dehydrogenation hydrogen storehouse, the 3rd atmospheric valve, the 3rd Pressure gauge, first sensor, second sensor, first logging, second logging, computer; Air inlet, suction hydrogen hydrogen storehouse, first valve, autoclave, second valve, dehydrogenation hydrogen storehouse connect in turn, inhale hydrogen hydrogen storehouse and be provided with first atmospheric valve, first Pressure gauge, suction hydrogen hydrogen storehouse, first sensor, first logging, computer connect in turn, dehydrogenation hydrogen storehouse is provided with the 3rd atmospheric valve, the 3rd Pressure gauge, dehydrogenation hydrogen storehouse, second sensor, second logging, computer connect in turn, and autoclave is provided with second Pressure gauge, second atmospheric valve.

Described autoclave is to adopt magnetic to stir autoclave.

The utility model can write down the variation of hydrogen pressure in the course of reaction automatically by computer, realizes inhaling H-H reaction under suitable reaction temperature, can realize the hydrogen discharge reaction under the normal pressure simultaneously when needing release hydrogen; The plant area area is little, and is simple in structure, and convenient disassembly uses flexibly; Method is implemented very easy, reduced investment, production efficiency height.

Description of drawings

Fig. 1 is the formation schematic diagram that utilizes the device of continuous absorption of aromatic compound and releasing hydrogen gas.

Among the figure, air inlet 1, first Pressure gauge 2, suction hydrogen hydrogen storehouse 3, first atmospheric valve 4, first valve 5, autoclave 6, second Pressure gauge 7, second atmospheric valve 8, second valve 9, dehydrogenation hydrogen storehouse 10, the 3rd atmospheric valve 11, the 3rd Pressure gauge 12, first sensor 13, second sensor 14, first logging 15, second logging 16, computer 17.

The specific embodiment

As shown in Figure 1, utilize the device of continuous absorption of aromatic compound and releasing hydrogen gas to comprise air inlet 1, first Pressure gauge 2, inhale hydrogen hydrogen storehouse 3, first atmospheric valve 4, first valve 5, autoclave 6, second Pressure gauge 7, second atmospheric valve 8, second valve 9, dehydrogenation hydrogen storehouse 10, the 3rd atmospheric valve 11, the 3rd Pressure gauge 12, first sensor 13, second sensor 14, first logging 15, second logging 16, computer 17; Air inlet 1, suction hydrogen hydrogen storehouse 3, first valve 5, autoclave 6, second valve 9, dehydrogenation hydrogen storehouse 10 connect in turn, inhale hydrogen hydrogen storehouse 3 and be provided with first atmospheric valve 4, first Pressure gauge 2, suction hydrogen hydrogen storehouse 3, first sensor 13, first logging 15, computer 17 connect in turn, dehydrogenation hydrogen storehouse 10 is provided with the 3rd atmospheric valve 11, the 3rd Pressure gauge 12, dehydrogenation hydrogen storehouse 10, second sensor 14, second logging 16, computer 17 connect in turn, and autoclave 6 is provided with second Pressure gauge 7, second atmospheric valve 8.

Described autoclave 6 is to adopt magnetic to stir autoclave.

Utilize the method for continuous absorption of aromatic compound and releasing hydrogen gas to be: toward inhaling the hydrogen that charges into 2.0MPa～6.0MPa pressure in the hydrogen hydrogen storehouse 3, put into simultaneously mass percentage content in the autoclave 6 and be 50～99.5% aromatic compound, mass percentage content is 0.5～50% catalyst, and catalyst is hydrogen bearing alloy lanthanum rich rare earth nickel MlNi ₅And Raney-Ni, and transition metal Ni, Pd, Pt, Ni/Al ₂O ₃, Pd/Al ₂O ₃, Pt/Al ₂O ₃With Ni/ active carbon, Pd/ active carbon, Pt/ active carbon, opening first valve 5 will inhale hydrogen hydrogen storehouse 3 and be communicated with autoclave 6, heat temperature raising to 120～240 ℃, stir, begin to inhale H-H reaction, dehydrogenation hydrogen storehouse 10 is a vacuum state, after waiting to contain the aromatic compound suction hydrogen end of unsaturated bond, close first valve 5, open second valve 9, make autoclave 6 interior pressure reduce to normal pressure, under 160～260 ℃, stir and carry out hydrogen discharge reaction under the normal pressure, so finish a process of inhaling hydrogen and putting hydrogen, reciprocation cycle reaches the purpose that hydrogen is put in continuous suction successively.

Described aromatic compound is ethyl carbazole, carbazole, toluene, benzene or naphthalene.

The utility model is described in further detail below in conjunction with embodiment, but scope of the present utility model is not limited to these embodiment.

Embodiment 1:

Adopt device shown in Figure 1, with 100g toluene and 100g MlNi ₅Add autoclave, vacuumize through sealing, inhale the high-purity hydrogen that charges into 5.0MPa in the hydrogen hydrogen storehouse, subsequently with the autoclave adjustment to reaction temperature, be communicated with and inhale hydrogen hydrogen storehouse and autoclave, stir, begin to absorb hydrogen under 220 ℃ of conditions, the hydrogen absorption capacity of toluene reaches 3.49wt% (quality hydrogen-storage density).

Embodiment 2:

Adopt device shown in Figure 1,10g ethyl carbazole and 1g Raney-Ni are added autoclave, vacuumize through sealing, inhale the high-purity hydrogen that charges into 6.0MPa in the hydrogen hydrogen storehouse, subsequently with the autoclave adjustment to reaction temperature, be communicated with to inhale hydrogen hydrogen storehouse and autoclave, stir, begin to absorb hydrogen under 200 ℃ of conditions, the hydrogen absorption capacity of ethyl carbazole reaches 5.0wt% (quality hydrogen-storage density).

Embodiment 3:

Adopt device shown in Figure 1,10g ethyl carbazole and 1g Raney-Ni are added autoclave, inhale the high-purity hydrogen that charges into 5.0MPa in the hydrogen hydrogen storehouse, subsequently temperature of reaction kettle is adjusted to reaction temperature, be communicated with to inhale hydrogen hydrogen storehouse, stir, under the condition of 180 ℃-200 ℃ and 5.0MPa, inhale H-H reaction.Dehydrogenation hydrogen storehouse is a vacuum state, treat that ethyl carbazole is inhaled hydrogen and finished after, close the valve of inhaling between hydrogen hydrogen storehouse and the reactor, be communicated with dehydrogenation hydrogen storehouse and reactor, make in the autoclave pressure reduce to normal pressure, in the time of 200 ℃, stir, carry out hydrogen discharge reaction.Inhale hydrogen and put in the process of hydrogen at such one, the hydrogen absorption capacity of ethyl carbazole reaches 5.61wt%, and conversion ratio is 96.85%; Maximum hydrogen desorption capacity is 0.197mol, and conversion ratio is 66.1%.

Claims (2)

1. one kind is utilized aromatic compound to absorb continuously and the device of releasing hydrogen gas, it is characterized in that comprising air inlet (1), first Pressure gauge (2), inhale hydrogen hydrogen storehouse (3), first atmospheric valve (4), first valve (5), autoclave (6), second Pressure gauge (7), second atmospheric valve (8), second valve (9), dehydrogenation hydrogen storehouse (10), the 3rd atmospheric valve (11), the 3rd Pressure gauge (12), first sensor (13), second sensor (14), first logging (15), second logging (16), computer (17); Air inlet (1), inhale hydrogen hydrogen storehouse (3), first valve (5), autoclave (6), second valve (9), dehydrogenation hydrogen storehouse (10) connects in turn, inhale hydrogen hydrogen storehouse (3) and be provided with first atmospheric valve (4), first Pressure gauge (2), inhale hydrogen hydrogen storehouse (3), first sensor (13), first logging (15), computer (17) connects in turn, dehydrogenation hydrogen storehouse (10) is provided with the 3rd atmospheric valve (11), the 3rd Pressure gauge (12), dehydrogenation hydrogen storehouse (10), second sensor (14), second logging (16), computer (17) connects in turn, and autoclave (6) is provided with second Pressure gauge (7), second atmospheric valve (8).

2. a kind of device that utilizes continuous absorption of aromatic compound and releasing hydrogen gas according to claim 1 is characterized in that described autoclave (6) is to adopt magnetic to stir autoclave.