CN209501069U - Cold hydrogenation silicon powder charging system is vented hydrogen recovery system - Google Patents
Cold hydrogenation silicon powder charging system is vented hydrogen recovery system Download PDFInfo
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- CN209501069U CN209501069U CN201920177773.5U CN201920177773U CN209501069U CN 209501069 U CN209501069 U CN 209501069U CN 201920177773 U CN201920177773 U CN 201920177773U CN 209501069 U CN209501069 U CN 209501069U
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- Prior art keywords
- silicon powder
- filter
- tank body
- cold hydrogenation
- recovery system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses a kind of cold hydrogenation silicon powder charging systems to be vented hydrogen recovery system, the silicon powder filter I and silicon powder filter II, the silicon powder filter II outlet port that the system is sequentially connected including the use of pipeline and silicon powder head tank are connected with hydrogen gas compressor；Branch pipe is provided between the silicon powder filter I and silicon powder filter II, the branch pipe is connected to exhaust gas elution circuit.This programme only needs to increase a silicon powder filter and corresponding pipeline, invests small.Hydrogen consumption is reduced, hydrogen about 357000Nm3/ can be recycled by design and operation amount.
Description
Technical field
The utility model relates to the systems in a kind of cold hydrogenation silicon technology processed for being vented hydrogen recycling.
Background technique
It is prepared in silicon powder technique in cold hydrogenation, silicon powder head tank will receive silicon powder after silicon powder pushes away sky again, in this mistake
It is needed in journey by the pressure in silicon powder head tank from 2.8Mpa.G pressure release to micro-positive pressure, and this portion gas is hydrogen.It is existing
In technique, the hydrogen of pressure release is emitted into atmosphere after being sent to exhaust gas elution process processing.
Hydrogen will cause great waste by direct emission, while a large amount of pressure release hydrogen can also aggravate exhaust gas elution process
Load so that whole system operation it is unsmooth.
Utility model content
In view of this, the present invention provides a kind of cold hydrogenation silicon powder charging systems to be vented hydrogen recovery system, is used for pair
The hydrogen of silicon powder head tank pressure release is recycled.
In order to solve the above technical problems, a kind of the technical solution of the utility model are as follows: cold hydrogenation silicon powder charging system emptying
Hydrogen recovery system, the silicon powder filter I being sequentially connected including the use of pipeline and silicon powder head tank and silicon powder filter II, it is described
Silicon powder filter II outlet port is connected with hydrogen gas compressor；It is provided between the silicon powder filter I and silicon powder filter II
Branch pipe, the branch pipe are connected to exhaust gas elution circuit.
As an improvement being provided with valve I on the branch pipe.
As an improvement being provided with valve II between the silicon powder filter II and branch pipe.
As a preference, the silicon powder filter includes tank body, lateral partition is provided in the tank body；It is described every
Several filter cores are installed on plate；The tank body, which is located at below partition, is provided with air inlet, and the tank body is located at setting above partition
There is gas outlet；And there is tank body one end of gas outlet to be provided with back blow port, have one end of air inlet to be provided with silicon powder row
Outlet.
As an improvement the tank body is cylindrical shape, bottom is provided with the collection bucket of taper.
As a preference, the filter core is tubular, it is open at one end closed at one end；Its open at one end is towards tank body gas outlet
One end.
As a preference, the filter core is sintering metal filter core.
As an improvement being provided with buffer tank between the hydrogen gas compressor and silicon powder filter II.
The utility model has the beneficial effect that
1, this programme only needs to increase a silicon powder filter and corresponding pipeline, invests small.
2, hydrogen consumption is reduced, hydrogen about 357000Nm3/ can be recycled by design and operation amount.
3, while reducing hydrogen consumption, moreover it is possible to reduce exhaust gas elution process processing load.
4, cold hydrogenation silicon powder head tank pressure release is unaffected in the case where engine manifold pressure is high, has ensured cold hydrogen
Change continuous and steady operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of silicon powder filter.
Marked in the figure: 1 silicon powder head tank, 2 silicon powder filter I, 3 silicon powder filter II, 4 surge tanks, 5 exhaust gas elution system
System, 6 valve I, 7 valve II, 11 tank bodies, 12 collection buckets, 13 air inlets, 14 gas outlets, 15 partitions, 16 filter cores, 17 back blow ports, 18
Silicon powder outlet.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, below with reference to specific implementation
The utility model is described in further detail for mode.
The utility model provides a kind of cold hydrogenation silicon powder charging system hydrogen recovery system.
Embodiment 1
The silicon powder filter I2 and silicon powder filter that the utility model is sequentially connected including the use of pipeline and silicon powder head tank 1
II3, the silicon powder filter II3 outlet port are connected with hydrogen gas compressor.The hydrogen gas compressor and silicon powder filter II3 it
Between be provided with surge tank 4.
Silicon powder filter includes tank body 11, and tank body 11 is cylindrical shape, and bottom is provided with the collection bucket 12 of taper.The tank
Lateral partition 15 is provided in body 11；Several filter cores 16 are installed on the partition 15；The tank body 11 is located under partition 15
Side is provided with air inlet 13, and the tank body 1, which is located above partition 15, is provided with gas outlet 14；And tank body 11 has gas outlet
One end is provided with back blow port 17, has one end of air inlet 13 to be provided with silicon powder outlet 18.The filter core 16 be tubular, one
End opening is closed at one end；Its open at one end is towards tank body gas outlet one end.
When silicon powder head tank pressure release, hydrogen passes sequentially through silicon powder filter I, silicon powder filter II, by what is carried secretly in hydrogen
It is re-used after entering surge tank 4 after silicon powder filtering.
Embodiment 2
As shown in Figure 1 and Figure 2, the silicon powder filter that the utility model is sequentially connected including the use of pipeline and silicon powder head tank 1
I2 and silicon powder filter II3, the silicon powder filter II3 outlet port are connected with hydrogen gas compressor.The hydrogen gas compressor with
Surge tank 4 is provided between silicon powder filter II3.It is provided with branch pipe between the silicon powder filter I2 and silicon powder filter II3,
The branch pipe is connected to exhaust gas elution circuit 5.It is provided with valve I6 on the branch pipe, is set between silicon powder filter II3 and branch pipe
It is equipped with valve II7.Branch is existing pipeline, does not need generally to remove original pipeline in the actual production process.And work as
When mono- line of valve II7 breaks down, it can be continued to run with conversion line by whole system, avoid shut-down (breakdown) mainteance.
Same silicon powder filter includes tank body 11, and tank body 11 is cylindrical shape, and bottom is provided with the collection bucket 12 of taper.Institute
It states and is provided with lateral partition 15 in tank body 11；Several filter cores 16 are installed on the partition 15；The tank body 11 is located at partition
15 lower sections are provided with air inlet 13, and the tank body 1, which is located above partition 15, is provided with gas outlet 14；And tank body 11 has outlet
One end of mouth is provided with back blow port 17, has one end of air inlet 13 to be provided with silicon powder outlet 18.The filter core 16 is cylinder
Shape, it is open at one end closed at one end；Its open at one end is towards tank body gas outlet one end.
Wherein, valve I6 normally opened valve II7 is normally closed, the fragmentary hydrogen revealed in silicon powder head tank 1 is entered useless
It is emptied after the processing of gas elution circuit 5.
The effect of valve I6 and valve I7 are truncation pipeline, facilitate the switching of hydrogen pass.Two valves are best
It is remotely controlled using solenoid valve and by master control.It is of course also possible to choose general shut-off valve, just need at this time operator manually into
Row opening and closing.
The silicon powder filtered out is collected for convenience, 11 bottom of silicon powder filter tank body is provided with collection bucket 12.
Collection bucket 12 is up big and down small cone, and bottom is equipped with valve.Collection bucket 12 can allow silicon powder Relatively centralized, be convenient for one
Secondary property emptying.
Filter core 16 is sintering metal filter core, is used as skeleton using wire mesh sintering, then metallisation at high temperature
End is used as filtering coatings.In order to preferably filter silicon powder, filter core mesh diameter should be between 1-20 microns.And filter core 16
Shape should be tubular closed at one end open at one end, and 11 air inlet of tank body 13 should be arranged on one side in filter core 16, but the court that is open
On one side to 11 gas outlet of tank body 14.Its object is to first is that expansion filter area, improves filter efficiency.Second is that utilizing hydrogen blowback
When be easier to blow off silicon powder of the siltation on filter core 16.
Hydrogen Vapor Pressure is larger when the purpose that surge tank 4 is arranged is due to pressure release, and flow velocity is very fast.If leading directly to rear end
Hydrogen gas compressor can make it exceed the handling capacity of hydrogen gas compressor.Therefore the hydrogen recycled using 4 Duis of surge tank is kept in,
To alleviate the pressure of rear end.
Meanwhile the utility model provides a kind of method of cold hydrogenation silicon powder charging system emptying hydrogen recycling, including following
Step.
A. the branch of connection exhaust gas elution circuit is closed before 1 pressure release of silicon powder head tank.
It when silicon powder head tank 1 is that equipment is fed, communicates with the exhaust gas elution circuit of branch road, and is filtered with silicon powder
Device II3 is disconnected.A small amount of air-dispersing in equipment running process is being entered at exhaust gas elution circuit after once filtering
It is discharged after reason.A small amount of hydrogen avoids increasing system loading without recycling.When master control has pushed away the silicon powder in silicon powder head tank 1
When preparation is fed again, silicon powder head tank 1 needs pressure release.It just needs to disconnect the branch for connecting exhaust gas elution circuit at this time.
B. the pipeline between silicon powder filter I3 and silicon powder filter II4 is opened.
By master control or artificial closing valve I6, Open valve II7, so that silicon powder head tank 1 and silicon powder filter II3
Connection.
C. pressure release hydrogen passes sequentially through silicon powder filter I2 and silicon powder filter II3 is filtered.
Certainly, silicon powder filter can be set into it is concatenated two or more, this need from cost and efficiency it
Between balance go to consider.Hydrogen will at least be filtered twice before entering hydrogen gas compressor in the application.Because even micro-
The silicon powder of amount enters hydrogen gas compressor, will also result in unpredictable consequence！
D. the pipeline between silicon powder filter I2 and silicon powder filter II3 is closed after pressure release.
It after pressure release, is closed by master control or manually by valve II, cutting silicon powder filter I2 and silicon powder filter
3 pipeline between II.Silicon powder head tank 1 starts normal feeding work.
E. the branch of connection exhaust gas elution circuit is opened.
It is opened by master control or manually by valve I, enables the trace hydrogen generated in 1 operation process of silicon powder head tank
It is emptied after enough can smoothly enter into the exhaust gas elution circuit processing of branch road.
Collection bucket 12 is entered by the silicon powder that filter core 16 filters, be discharged from silicon powder outlet 18 and collects secondary use.
When pressure release is unsmooth, it can be passed through hydrogen by back blow port 17, blowback is carried out to filter core 16, for clearing up filter core 16
The silicon powder of siltation, to improve the efficiency of filtering.In actual production, judge it is according to silicon powder filter partition whether pressure release is unobstructed
The pressure difference at both ends judges.If pressure difference is excessive to illustrate that filter core blocking is serious, just need to carry out blowback cleaning at this time.Hydrogen source
Hydrogen is sprayed into tank body by back blow port, and is entered inside filter core from the open end of filter core, the silicon powder that will be attached on filter core
It blows off.
After using the utility model and carrying out hydrogen recycling, hydrogen is can be recycled about by design and operation amount in whole system
357000Nm3/.While reducing hydrogen consumption, moreover it is possible to reduce exhaust gas elution process processing load.
Above are merely preferred embodiments of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For limitations of the present invention, the protection scope of the utility model should be defined by the scope defined by the claims..For
For those skilled in the art, without departing from the spirit and scope of the utility model, it can also make several
Improvements and modifications, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of cold hydrogenation silicon powder charging system emptying hydrogen recovery system, it is characterised in that: including the use of pipeline and silicon powder into
The silicon powder filter I and silicon powder filter II, the silicon powder filter II outlet port that batch can is sequentially connected are connected with hydrogen pressure
Contracting machine；Branch pipe is provided between the silicon powder filter I and silicon powder filter II, the branch pipe is connected to exhaust gas elution circuit.
2. the cold hydrogenation silicon powder charging system of one kind according to claim 1 is vented hydrogen recovery system, it is characterised in that: institute
It states and is provided with valve I on branch pipe.
3. the cold hydrogenation silicon powder charging system of one kind according to claim 1 is vented hydrogen recovery system, it is characterised in that: institute
It states and is provided with valve II between silicon powder filter II and branch pipe.
4. the cold hydrogenation silicon powder charging system of one kind according to claim 1 is vented hydrogen recovery system, it is characterised in that: institute
Stating silicon powder filter includes tank body, and lateral partition is provided in the tank body；Several filter cores are installed on the partition；It is described
Tank body, which is located at below partition, is provided with air inlet, and the tank body, which is located above partition, is provided with gas outlet；And tank body has
One end of port is provided with back blow port, and one end with air inlet is provided with silicon powder outlet.
5. the cold hydrogenation silicon powder charging system of one kind according to claim 4 is vented hydrogen recovery system, it is characterised in that: institute
Tank body is stated as cylindrical shape, bottom is provided with the collection bucket of taper.
6. the cold hydrogenation silicon powder charging system of one kind according to claim 4 is vented hydrogen recovery system, it is characterised in that: institute
Stating filter core is tubular, open at one end closed at one end；Its open at one end is towards tank body gas outlet one end.
7. the cold hydrogenation silicon powder charging system of one kind according to claim 6 is vented hydrogen recovery system, it is characterised in that: institute
Stating filter core is sintering metal filter core.
8. the cold hydrogenation silicon powder charging system of one kind according to claim 1 is vented hydrogen recovery system, it is characterised in that: institute
It states and is provided with surge tank between hydrogen gas compressor and silicon powder filter II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920177773.5U CN209501069U (en) | 2019-01-31 | 2019-01-31 | Cold hydrogenation silicon powder charging system is vented hydrogen recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920177773.5U CN209501069U (en) | 2019-01-31 | 2019-01-31 | Cold hydrogenation silicon powder charging system is vented hydrogen recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN209501069U true CN209501069U (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920177773.5U Active CN209501069U (en) | 2019-01-31 | 2019-01-31 | Cold hydrogenation silicon powder charging system is vented hydrogen recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109847470A (en) * | 2019-01-31 | 2019-06-07 | 内蒙古通威高纯晶硅有限公司 | Cold hydrogenation silicon powder charging system emptying hydrogen recovery system and method |
-
2019
- 2019-01-31 CN CN201920177773.5U patent/CN209501069U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109847470A (en) * | 2019-01-31 | 2019-06-07 | 内蒙古通威高纯晶硅有限公司 | Cold hydrogenation silicon powder charging system emptying hydrogen recovery system and method |
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