CN204035568U - The recycling utilization equipment of hydrogen rich off gas in neodymium iron boron hydrogen production process - Google Patents
The recycling utilization equipment of hydrogen rich off gas in neodymium iron boron hydrogen production process Download PDFInfo
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- CN204035568U CN204035568U CN201420463154.XU CN201420463154U CN204035568U CN 204035568 U CN204035568 U CN 204035568U CN 201420463154 U CN201420463154 U CN 201420463154U CN 204035568 U CN204035568 U CN 204035568U
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Abstract
The utility model relates to hydrogen-storage alloy purification and recycling field, the recycling utilization equipment of hydrogen rich off gas after particularly a kind of hydrogen-storage alloy purified hydrogen technology realizes the fragmentation of neodymium iron boron hydrogen, in neodymium iron boron hydrogen production process.This equipment is connected with neodymium iron boron hydrogen breaker gas, comprises hydrogen_cooling and purifier, preserves hydrogen and supercharging device and hydrogen Collection and utilization device.This equipment utilization hydrogen-storage alloy carries out selective absorbing and release to hydrogen, functionally easy coupling and compatible, and structure is simple, hydrogen recovery rate and cyclic utilization rate high, protection of the environment, reduce production cost, operation and maintenance are simple and convenient; Purifying, reclaim, recycling in process, equipment makes its air-tightness effectively be ensured because of seldom movement; Such hydrogen degree of purity is subject to fabulous control, and production efficiency is high, and cost reduces greatly.
Description
Technical field
The utility model relates to hydrogen-storage alloy purification and recycling field, the recycling utilization equipment of hydrogen rich off gas after particularly a kind of hydrogen-storage alloy purified hydrogen technology realizes the fragmentation of neodymium iron boron hydrogen, in neodymium iron boron hydrogen production process.
Background technology
China is the big producing country of rare-earth Nd-Fe-B, and in the production process of neodymium iron boron, the broken powder process of hydrogen is an important production link.Hydrogen fragmentation needs to use hydrogen in a large number, but producer is very simple for vent gas treatment, and directly discharge enters in air usually.The way of this direct discharge, has a strong impact on atmospheric environment on the one hand, is cause great waste to hydrogen resource on the other hand.Because the neodymium iron boron output of China rises year by year, so adverse influence is also in increase.2013, the output of China's neodymium iron boron reached 9.43 ten thousand tons, and often manufacture one ton of neodymium iron boron approximately consumes high-purity hydrogen and is about 60m
3, so the whole nation in 2013 is approximately 5.3 × 10 for the hydrogen that neodymium iron boron hydrogen is broken
6m
3, discharge again after this part hydrogen neodymium iron boron hydrogen is broken, be all discharged into air and suffered, well imagine, this is huge on the impact of environment.In addition, in recent years, there is haze in national large area, and atmospheric environment problem shows outstanding.Environmental Protection in China department also notices the behavior of directly discharge hydrogen in neodymium iron boron production industry, by the discharge from environmental protection policy angle restriction hydrogen tail gas.Therefore, the hydrogen containing tail gas how reclaiming the discharge of neodymium iron boron manufacturer becomes the focal issue that the sector extremely urgently solves, and can this is related to enterprise produce the economic society interests with its impact smoothly.
The recovery isolation technics of hydrogen mainly contains pressure swing adsorption, membrane separation technique, cryogenic separation technology and metal hydride isolation technics, and wherein metallic hydride method has the advantages such as hydrogen storage content is large, pollution-free, safe and reliable, reusable.Utilize the selective hydrogen absorption characteristic of hydrogen-storage alloy, the hydrogen not only in exhaust gas recycling, hydrogen purity can also be made to reach more than 99.999%.Realize recovery and the utilization of hydrogen in neodymium iron boron production process, it is significant, is mainly manifested in: first, effectively can solve neodymium iron boron producer and discharge hydrogen problem in a large number, realizes the sustainable circulation of neodymium iron boron manufacturing enterprise and produces.Secondly, recycling of discharge hydrogen, is conducive to the utilization of hydrogen resources, can reduces production cost, increases business economic and social benefit.Moreover this systems technology also has wide application prospect.The annual callable hydrogen rich off gas of China is just more than hundred billion cubic meters according to statistics.
To sum up, for hydrogen after the broken powder process of neodymium iron boron hydrogen because directly discharging the solution affecting atmospheric environment and hydrogen resource is wasted etc. greatly to technical problem, in prior art, there is no report.
Summary of the invention
For above problem, the purpose of this utility model is, provides a kind of hydrogen-storage alloy that utilizes to the selective absorbing principle of hydrogen, to the recycling utilization equipment that the hydrogen rich off gas discharged in neodymium iron boron production process reclaims.
In order to achieve the above object, the utility model provides following technical scheme:
A recycling utilization equipment for hydrogen rich off gas in neodymium iron boron hydrogen production process, be connected with neodymium iron boron hydrogen breaker 1 gas, this equipment comprises: hydrogen_cooling and purifier, preserve hydrogen and supercharging device and hydrogen Collection and utilization device;
Described hydrogen_cooling and purifier comprise upright tank 4, and the inlet side of described upright tank 4 is connected with the outlet side of neodymium iron boron hydrogen breaker 1 by the first valve 2; Described upright tank 4 is connected with cooling water supplying unit 18; Described upright tank 4 is connected with aspiration pump 8 by the 3rd valve 6;
Described storage hydrogen and supercharging device comprise collects hydrogen gas tank 9, and the inlet side of described collection hydrogen gas tank 9 is connected by the outlet side of the second valve 5 with upright tank 4, being also connected with booster pump 19 of described collection hydrogen gas tank 9;
Described hydrogen Collection and utilization device comprises the hydrogen-storage tank 12 of Absorbable rod, release hydrogen, has hydrogen-storage alloy powder in described hydrogen-storage tank 12, and the inlet side of hydrogen-storage tank 12 is connected with the outlet side collecting hydrogen gas tank 9 by the 4th valve 11; The lower outside of described hydrogen-storage tank 12 is connected with vavuum pump 15 by the 5th valve 14, and the outlet side of described hydrogen-storage tank 12 is connected with the inlet side of neodymium iron boron hydrogen breaker 1 by the 6th valve 16.
Described upright tank 4 built with temperature sensor 3, this temperature sensor 3 is connected with temperature indicator 17.
The circulating water pipe of described water supplying unit 18 is around the outside of upright tank 4.
Density of hydrogen alarm 7 is furnished with between described 3rd valve 6 and aspiration pump 8.
The bottom of described hydrogen-storage tank 12 and the connecting place of vavuum pump 15 are provided with separation net 13.
Between described collection hydrogen gas tank 9 and the 4th valve 11, be furnished with the first Hydrogen Vapor Pressure table 10, between described 4th valve 11 and hydrogen-storage tank 12, be furnished with the second Hydrogen Vapor Pressure table 20.
The outlet side of described neodymium iron boron hydrogen breaker 1 discharges the hydrogen containing argon gas, and this mist temperature reaches 500 ~ 600 DEG C.
Described booster pump 19 makes the hydrogen in collection hydrogen gas tank 9 have the hydrogen pressure of 2 ~ 3MPa.
Compared with prior art, the beneficial effects of the utility model are:
Equipment of the present utility model easily to mate and compatible in function, and structure is simple, hydrogen recovery rate and cyclic utilization rate high, protection of the environment, reduce production cost, operation and maintenance are simple and convenient; Purifying, reclaim, recycling in process, equipment makes its air-tightness effectively be ensured because of seldom movement; Such hydrogen degree of purity is subject to fabulous control, and production efficiency is high, and cost reduces greatly.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the recycling utilization equipment of hydrogen rich off gas in neodymium iron boron hydrogen production process of the present utility model.
[primary clustering symbol description]
1 neodymium iron boron hydrogen breaker
2 first valves
3 temperature sensors
4 upright tanks
5 second valves
6 the 3rd valves
7 density of hydrogen alarms
8 aspiration pumps
9 collect hydrogen gas tank
10 first Hydrogen Vapor Pressure tables
11 the 4th valves
12 hydrogen-storage tanks
13 separation nets
14 the 5th valves
15 vavuum pumps
16 the 6th valves
17 temperature indicators
18 water supplying unit
19 booster pumps
20 second Hydrogen Vapor Pressure tables
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.
As shown in Figure 1, for the schematic diagram of the recycling utilization equipment of hydrogen rich off gas in neodymium iron boron hydrogen production process of the present utility model, this equipment utilization hydrogen-storage alloy, to the selective absorbing principle of hydrogen, reclaims the hydrogen rich off gas discharged in neodymium iron boron production process.
Wherein, in described neodymium iron boron hydrogen production process, the recycling utilization system of hydrogen rich off gas comprises: neodymium iron boron hydrogen breaker 1, hydrogen_cooling and purifier, preserve hydrogen and supercharging device and hydrogen Collection and utilization device.
Described hydrogen_cooling and purifier comprise upright tank 4, and the inlet side of described upright tank 4 is connected with the outlet side of neodymium iron boron hydrogen breaker 1 by the first valve 2; Described upright tank 4 is connected with water supplying unit 18, and the circulating water pipe of described water supplying unit 18 is around the outside of upright tank 4; In the middle part of the inside of described upright tank 4, temperature sensor 3 is housed, this temperature sensor 3 is connected with the temperature indicator 17 of upright tank 4 outside; The bottom of described upright tank 4 is connected with aspiration pump 8 by the 3rd valve 6, is furnished with density of hydrogen alarm 7 between the 3rd valve 6 and aspiration pump 8.
Described storage hydrogen and supercharging device comprise collects hydrogen gas tank 9, the inlet side of described collection hydrogen gas tank 9 is connected with the outlet side of upright tank 4 by the second valve 5, the top of described collection hydrogen gas tank 9 is furnished with booster pump 19, and the outlet side of described collection hydrogen gas tank 9 is furnished with the first Hydrogen Vapor Pressure table 10.
Described hydrogen Collection and utilization device comprises hydrogen-storage tank 12, and the inlet side of described hydrogen-storage tank 12 is connected with the outlet side collecting hydrogen gas tank 9 by the 4th valve 11, and the second Hydrogen Vapor Pressure table 20 is arranged in the inlet side of hydrogen-storage tank 12; The lower outside of described hydrogen-storage tank 12 is connected with vavuum pump 15 by the 5th valve 14, the bottom of hydrogen-storage tank 12 and the connecting place of vavuum pump 15 are also provided with separation net 13, and the outlet side of described hydrogen-storage tank 12 is connected with the inlet side of neodymium iron boron hydrogen breaker 1 by the 6th valve 16.
Wherein, the first Hydrogen Vapor Pressure table 10 is arranged in be collected between hydrogen gas tank 9 and the 4th valve 11, and the second Hydrogen Vapor Pressure table 20 is arranged between the 4th valve 11 and hydrogen-storage tank 12.
In described neodymium iron boron hydrogen production process hydrogen rich off gas recycling utilization system work process in:
After neodymium iron boron hydrogen is broken in neodymium iron boron hydrogen breaker 1, the hydrogen of release is attended by argon gas, and simultaneous temperature is up to 500 ~ 600 DEG C.
This mist enters the upright tank 4 in hydrogen_cooling and purifier through the first valve 2, utilize around circulating water pipe cool, temperature sensor 3 detects the temperature of mist in upright tank 4, and shows this temperature by temperature indicator 17; Meanwhile, open aspiration pump 8 and take heavy argon gas away, take out with hydrogen in argon gas process, detect the density of hydrogen of the mist extracted out with density of hydrogen alarm 7, once density of hydrogen meets preset requirement, close the 3rd valve 6.
Through above-mentioned process, open the second valve 5, the hydrogen of preliminary purification and cooling collects hydrogen gas tank 9 by entering, but its pressure is lower, in order to ensure the efficient suction hydrogen of hydrogen-storage alloy, increase hydrogen pressure with booster pump 19, Hydrogen Vapor Pressure in first Hydrogen Vapor Pressure table 10 measurement collection hydrogen gas tank 9, to judge the suction hydrogen saturability of hydrogen-storage alloy, booster pump 19 is adopted to make the hydrogen in collection hydrogen gas tank 9 have the hydrogen pressure of 2 ~ 3MPa, so that hydrogen-storage alloy absorbs.
The hydrogen of certain pressure enters hydrogen-storage tank 12 by the 4th valve 11, and hydrogen-storage alloy starts to inhale hydrogen, and the suction hydrogen saturability of hydrogen-storage alloy is detected by the second Hydrogen Vapor Pressure table 20, till pressure change is less; When the hydrogen-storage alloy of saturated suction hydrogen puts hydrogen, open the 5th valve 14, start vavuum pump 15 and make outside hydrogen-storage alloy, but the space in hydrogen-storage tank 12 is in vacuum state, in order to ensure that hydrogen-storage alloy powder is not pumped, the separation net 13 arranged at hydrogen-storage tank 12 lower outside stops hydrogen-storage alloy powder.
Open the 6th valve 16, the hydrogen that hydrogen-storage alloy is released is for the neodymium iron boron hydrogen fragmentation hydrogen in neodymium iron boron hydrogen breaker 1.
Claims (8)
1. the recycling utilization equipment of hydrogen rich off gas in neodymium iron boron hydrogen production process, is connected with neodymium iron boron hydrogen breaker (1) gas, it is characterized in that:
This equipment comprises: hydrogen_cooling and purifier, preserve hydrogen and supercharging device and hydrogen Collection and utilization device;
Described hydrogen_cooling and purifier comprise upright tank (4), and the inlet side of described upright tank (4) is connected with the outlet side of neodymium iron boron hydrogen breaker (1) by the first valve (2); Described upright tank (4) is connected with cooling water supplying unit (18); Described upright tank (4) is connected with aspiration pump (8) by the 3rd valve (6);
Described storage hydrogen and supercharging device comprise collects hydrogen gas tank (9), the inlet side of described collection hydrogen gas tank (9) is connected with the outlet side of upright tank (4) by the second valve (5), being also connected with booster pump (19) of described collection hydrogen gas tank (9);
Described hydrogen Collection and utilization device comprises the hydrogen-storage tank (12) of Absorbable rod, release hydrogen, described hydrogen-storage tank has hydrogen-storage alloy powder in (12), and the inlet side of hydrogen-storage tank (12) is connected with the outlet side collecting hydrogen gas tank (9) by the 4th valve (11); The lower outside of described hydrogen-storage tank (12) is connected with vavuum pump (15) by the 5th valve (14), and the outlet side of described hydrogen-storage tank (12) is connected with the inlet side of neodymium iron boron hydrogen breaker (1) by the 6th valve (16).
2. the recycling utilization equipment of hydrogen rich off gas in a kind of neodymium iron boron hydrogen production process as claimed in claim 1, is characterized in that:
Described upright tank (4) built with temperature sensor (3), this temperature sensor (3) is connected with temperature indicator (17).
3. the recycling utilization equipment of hydrogen rich off gas in a kind of neodymium iron boron hydrogen production process as claimed in claim 1, is characterized in that:
The circulating water pipe of described water supplying unit (18) is around the outside of upright tank (4).
4. the recycling utilization equipment of hydrogen rich off gas in a kind of neodymium iron boron hydrogen production process as claimed in claim 1, is characterized in that:
Density of hydrogen alarm (7) is furnished with between described 3rd valve (6) and aspiration pump (8).
5. the recycling utilization equipment of hydrogen rich off gas in a kind of neodymium iron boron hydrogen production process as claimed in claim 1, is characterized in that:
The bottom of described hydrogen-storage tank (12) and the connecting place of vavuum pump (15) are provided with separation net (13).
6. the recycling utilization equipment of hydrogen rich off gas in a kind of neodymium iron boron hydrogen production process as claimed in claim 1, is characterized in that:
Between described collection hydrogen gas tank (9) and the 4th valve (11), be furnished with the first Hydrogen Vapor Pressure table (10), between described 4th valve (11) and hydrogen-storage tank (12), be furnished with the second Hydrogen Vapor Pressure table (20).
7. the recycling utilization equipment of hydrogen rich off gas in a kind of neodymium iron boron hydrogen production process as described in one of claim 1-6, is characterized in that:
The outlet side of described neodymium iron boron hydrogen breaker (1) discharges the hydrogen containing argon gas, and this mist temperature reaches 500 ~ 600 DEG C.
8. the recycling utilization equipment of hydrogen rich off gas in a kind of neodymium iron boron hydrogen production process as described in one of claim 1-6, is characterized in that:
Described booster pump (19) makes the hydrogen in collection hydrogen gas tank (9) have the hydrogen pressure of 2 ~ 3MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420463154.XU CN204035568U (en) | 2014-08-15 | 2014-08-15 | The recycling utilization equipment of hydrogen rich off gas in neodymium iron boron hydrogen production process |
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| CN201420463154.XU CN204035568U (en) | 2014-08-15 | 2014-08-15 | The recycling utilization equipment of hydrogen rich off gas in neodymium iron boron hydrogen production process |
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| CN204035568U true CN204035568U (en) | 2014-12-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108158A (en) * | 2015-08-06 | 2015-12-02 | 安徽大地熊新材料股份有限公司 | Hydrogen collecting system for NdFeB hydrogen decrepitation technology and application method thereof |
| CN106001582A (en) * | 2016-05-27 | 2016-10-12 | 钢铁研究总院 | Rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and system and method thereof |
-
2014
- 2014-08-15 CN CN201420463154.XU patent/CN204035568U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108158A (en) * | 2015-08-06 | 2015-12-02 | 安徽大地熊新材料股份有限公司 | Hydrogen collecting system for NdFeB hydrogen decrepitation technology and application method thereof |
| CN106001582A (en) * | 2016-05-27 | 2016-10-12 | 钢铁研究总院 | Rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and system and method thereof |
| CN106001582B (en) * | 2016-05-27 | 2018-05-29 | 钢铁研究总院 | Rare earth permanent magnet hydrogen is broken and hydrogen recycles storage hydrogen device and its system and method |
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