CN111170764A - Wet hydrogen system and working method thereof - Google Patents
Wet hydrogen system and working method thereof Download PDFInfo
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- CN111170764A CN111170764A CN201911406795.5A CN201911406795A CN111170764A CN 111170764 A CN111170764 A CN 111170764A CN 201911406795 A CN201911406795 A CN 201911406795A CN 111170764 A CN111170764 A CN 111170764A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/88—Metals
Abstract
The invention provides a wet hydrogen system and a working method thereof, wherein the wet hydrogen system comprises a first wet hydrogen barrel and a second wet hydrogen barrel, the first wet hydrogen barrel is connected with a main hydrogen pipeline through a first pipeline, the first wet hydrogen barrel is connected with a sintering furnace pipeline through a second pipeline, the second wet hydrogen barrel is connected with the main hydrogen pipeline through a third pipeline, the second wet hydrogen barrel is connected with the sintering furnace pipeline through a fourth pipeline, the second pipeline is connected with the third pipeline through a fifth pipeline, and the first pipeline is connected with the fourth pipeline through a sixth pipeline. The wet hydrogen system is favorable for ensuring the consistency of the molybdenum-manganese sintering atmosphere and further improving the performance of ceramic products.
Description
Technical Field
The invention belongs to the technical field of ceramic metallization sintering, and particularly relates to a wet hydrogen system and a working method thereof.
Background
The hydrogen sintering atmosphere is a very important parameter index in the ceramic metallization process. The hydrogen is mainly prepared from liquid ammonia, and since the sintering atmosphere cannot be dry hydrogen, the hydrogen introduced into the sintering furnace needs to contain certain moisture, namely wet hydrogen.
At present, only one wet hydrogen barrel is used for providing wet hydrogen in the existing sintering process. The ammonia gas in the hydrogen production furnace can not be completely decomposed into hydrogen and nitrogen, and a part of the ammonia gas is carried in the gas entering the wet hydrogen barrel, so that the ammonia gas has a great toxic effect on molybdenum-manganese sintering, and the pH value of the wet hydrogen can be increased. When the pH value of the wet hydrogen rises to 10, the wet hydrogen water in the wet hydrogen barrel must be replaced, and in the replacement process, the sintering atmosphere is dry hydrogen, so that at least 2-3 boats of defective products are generated in the sintering furnace.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the above mentioned disadvantages and drawbacks of the background art and to provide a wet hydrogen system and a method for operating the same.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a wet hydrogen system comprises a first wet hydrogen barrel and a second wet hydrogen barrel, wherein the first wet hydrogen barrel is connected with a main hydrogen pipeline through a first pipeline, the first wet hydrogen barrel is connected with a sintering furnace pipeline through a second pipeline, the second wet hydrogen barrel is connected with the main hydrogen pipeline through a third pipeline, the second wet hydrogen barrel is connected with the sintering furnace pipeline through a fourth pipeline, the second pipeline is connected with the third pipeline through a fifth pipeline, and the first pipeline is connected with the fourth pipeline through a sixth pipeline;
a first valve is arranged at one end of the first pipeline close to the first wet hydrogen barrel, a fifth valve is arranged at one end close to the main hydrogen pipeline, and the joint of the sixth pipeline and the first pipeline is positioned between the first valve and the fifth valve; a second valve is arranged at one end of the second pipeline close to the first wet hydrogen barrel, a third valve is arranged at one end close to the sintering furnace pipeline, and the joint of the second pipeline and the fifth pipeline is positioned between the second valve and the third valve; a seventh valve is arranged at one end of the third pipeline close to the second wet hydrogen barrel, an eighth valve is arranged at one end close to the main hydrogen pipeline, and the joint of the third pipeline and the fifth pipeline is positioned between the seventh valve and the eighth valve; a ninth valve is arranged at one end of the fourth pipeline close to the second wet hydrogen barrel, a tenth valve is arranged at one end close to the sintering furnace pipeline, and the joint of the fourth pipeline and the sixth pipeline is positioned between the ninth valve and the tenth valve; a sixth valve is arranged on the fifth pipeline; and a fourth valve is arranged on the sixth pipeline.
In the wet hydrogen system, preferably, the first wet hydrogen tank and the second wet hydrogen tank are both provided with a pH sensor and a conductivity sensor. Adopt the mode of the dual supervision of pH value and conductivity, can feed back the quality of water of wet hydrogen water more accurately to in time change wet hydrogen water.
As a general inventive concept, the present invention also provides a working method of the above wet hydrogen system, which comprises: and opening a fifth valve, a first valve, a second valve, a sixth valve, a seventh valve, a ninth valve and a tenth valve, and closing the rest valves, wherein the first wet hydrogen barrel and the second wet hydrogen barrel are connected in series, dry hydrogen sequentially flows through the main hydrogen pipeline, the first wet hydrogen barrel, the second pipeline, the fifth pipeline, the third pipeline, the second wet hydrogen barrel and the fourth pipeline to form wet hydrogen, and the wet hydrogen is introduced into the sintering furnace through the sintering furnace pipeline.
In the above operating method of the wet hydrogen system, preferably, when the wet hydrogen water is replaced, the eighth valve, the seventh valve, the ninth valve and the tenth valve are opened, and the rest valves are closed, dry hydrogen can sequentially flow through the main hydrogen pipeline, the third pipeline, the second wet hydrogen tank and the fourth pipeline to form wet hydrogen, and the wet hydrogen flows into the sintering furnace through the sintering furnace pipeline; at this time, the first wet hydrogen barrel and the second wet hydrogen barrel are connected in parallel, water in the first wet hydrogen barrel can be directly replaced, wet hydrogen is provided by the second wet hydrogen barrel, and the atmosphere of the wet hydrogen can be continuously maintained in the sintering furnace.
As a general inventive concept, the present invention further provides another working method of the above wet hydrogen system, which comprises: when the dry hydrogen sintering furnace works normally, the eighth valve, the seventh valve, the ninth valve, the fourth valve, the first valve, the second valve and the third valve are opened, the rest valves are closed, the first wet hydrogen barrel and the second wet hydrogen barrel are connected in series, dry hydrogen sequentially flows through the main hydrogen pipeline, the third pipeline, the second wet hydrogen barrel, the fourth pipeline, the sixth pipeline, the first wet hydrogen barrel and the second pipeline to form wet hydrogen, and the wet hydrogen is introduced into the sintering furnace through the sintering furnace pipeline.
In the above operating method of the wet hydrogen system, preferably, when the wet hydrogen water is replaced, the fifth valve, the first valve, the second valve and the third valve are opened, and the rest valves are closed, dry hydrogen can sequentially flow through the main hydrogen pipeline, the first wet hydrogen barrel and the second pipeline to form wet hydrogen, and the wet hydrogen flows into the sintering furnace through the sintering furnace pipeline; at the moment, the first wet hydrogen barrel and the second wet hydrogen barrel are connected in parallel, water in the second wet hydrogen barrel can be directly replaced, wet hydrogen is provided by the first wet hydrogen barrel, and the atmosphere of the wet hydrogen can be continuously maintained in the sintering furnace.
Compared with the prior art, the invention has the advantages that:
in the wet hydrogen system, the mode that the first wet hydrogen barrel and the second wet hydrogen barrel are connected in series is adopted in normal production, so that the obtained wet hydrogen is purer; in the water changing process, the mode that the first wet hydrogen barrel and the second wet hydrogen barrel are connected in parallel is adopted, wet hydrogen can be provided by the single wet hydrogen barrel, the wet hydrogen atmosphere in the sintering furnace is ensured, and defective products are avoided. The wet hydrogen system is favorable for ensuring the consistency of the molybdenum-manganese sintering atmosphere and further improving the performance of ceramic products.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a wet hydrogen system in embodiment 1 of the present invention.
Illustration of the drawings:
1. a first valve; 2. a second valve; 3. a third valve; 4. a fourth valve; 5. a fifth valve; 6. a sixth valve; 7. a seventh valve; 8. an eighth valve; 9. a ninth valve; 10. a tenth valve; 11. a first conduit; 12. a second conduit; 13. a third pipeline; 14. a fourth conduit; 15. a fifth pipeline; 16. a sixth pipeline; 17. a first wet hydrogen tank; 18. a second wet hydrogen tank; 19. a primary hydrogen conduit; 20. and (4) sintering furnace pipelines.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
Example (b):
a schematic structural diagram of a wet hydrogen system of the present invention is shown in fig. 1, the wet hydrogen system comprises a first wet hydrogen tank 17 and a second wet hydrogen tank 18, the first wet hydrogen tank 17 is connected with a main hydrogen pipeline 19 through a first pipeline 11, the first wet hydrogen tank 17 is connected with a sintering furnace pipeline 20 through a second pipeline 12, the second wet hydrogen tank 18 is connected with the main hydrogen pipeline 19 through a third pipeline 13, the second wet hydrogen tank 18 is connected with the sintering furnace pipeline 20 through a fourth pipeline 14, the second pipeline 12 is connected with the third pipeline 13 through a fifth pipeline 15, and the first pipeline 11 is connected with the fourth pipeline 14 through a sixth pipeline 16;
a first valve 1 is arranged at one end of the first pipeline 11 close to the first wet hydrogen barrel 17, a fifth valve 5 is arranged at one end close to the main hydrogen pipeline 19, and the joint of the sixth pipeline 16 and the first pipeline 11 is positioned between the first valve 1 and the fifth valve 5; a second valve 2 is arranged at one end of the second pipeline 12 close to the first wet hydrogen barrel 17, a third valve 3 is arranged at one end close to the sintering furnace pipeline 20, and the joint of the second pipeline 12 and the fifth pipeline 15 is positioned between the second valve 2 and the third valve 3; a seventh valve 7 is arranged at one end of the third pipeline 13 close to the second wet hydrogen barrel 18, an eighth valve 8 is arranged at one end close to the main hydrogen pipeline 19, and the joint of the third pipeline 13 and the fifth pipeline 15 is positioned between the seventh valve 7 and the eighth valve 8; a ninth valve 9 is arranged at one end of the fourth pipeline 14 close to the second wet hydrogen barrel 18, a tenth valve 10 is arranged at one end close to the sintering furnace pipeline 20, and the joint of the fourth pipeline 14 and the sixth pipeline 16 is positioned between the ninth valve 9 and the tenth valve 10; a sixth valve 6 is arranged on the fifth pipeline 15; a fourth valve 4 is arranged in the sixth pipe 16.
The wet hydrogen system of this embodiment, pH value sensor and conductivity sensor are all installed to first wet hydrogen bucket 17 and the wet hydrogen bucket 18 of second, can feed back wet hydrogen water's quality of water more accurately to in time change wet hydrogen water.
The wet hydrogen system of the present embodiment may employ a forward series operation or an anti-series operation. The positive series working method specifically comprises the following steps: and opening a fifth valve 5, a first valve 1, a second valve 2, a sixth valve 6, a seventh valve 7, a ninth valve 9 and a tenth valve 10, closing the rest valves, connecting a first wet hydrogen barrel 17 and a second wet hydrogen barrel 18 in series, enabling dry hydrogen to sequentially flow through a main hydrogen pipeline 19, a first pipeline 11, the first wet hydrogen barrel 17, a second pipeline 12, a fifth pipeline 15, a third pipeline 13, the second wet hydrogen barrel 18 and a fourth pipeline 14 to form wet hydrogen, and enabling the wet hydrogen to pass through a sintering furnace pipeline 20 and enter a sintering furnace. When the wet hydrogen water is replaced, the eighth valve 8, the seventh valve 7, the ninth valve 9 and the tenth valve 10 are opened, the rest valves are closed, the dry hydrogen can sequentially flow through the main hydrogen pipeline 19, the third pipeline 13, the second wet hydrogen barrel 18 and the fourth pipeline 14 to form wet hydrogen, and the wet hydrogen flows into the sintering furnace through the sintering furnace pipeline 20; at this time, the first wet hydrogen tank 17 and the second wet hydrogen tank 18 are connected in parallel, water in the first wet hydrogen tank 17 can be directly replaced, wet hydrogen is supplied from the second wet hydrogen tank 18, and the atmosphere of the wet hydrogen can be continuously maintained in the sintering furnace.
The anti-series working method specifically comprises the following steps: and opening an eighth valve 8, a seventh valve 7, a ninth valve 9, a fourth valve 4, a first valve 1, a second valve 2 and a third valve 3, closing the rest valves, connecting a first wet hydrogen barrel 17 and a second wet hydrogen barrel 18 in series, allowing dry hydrogen to sequentially flow through a main hydrogen pipeline 19, a third pipeline 13, the second wet hydrogen barrel 18, a fourth pipeline 14, a sixth pipeline 16, a first pipeline 11, the first wet hydrogen barrel 17 and a second pipeline 12 to form wet hydrogen, and introducing the wet hydrogen into the sintering furnace through a sintering furnace pipeline 20. When the wet hydrogen water is replaced, the fifth valve 5, the first valve 1, the second valve 2 and the third valve 3 are opened, the other valves are closed, the dry hydrogen can sequentially flow through the main hydrogen pipeline 19, the first pipeline 11, the first wet hydrogen barrel 17 and the second pipeline 12 to form wet hydrogen, and the wet hydrogen flows into the sintering furnace through the sintering furnace pipeline 20; at this time, the first wet hydrogen tank 17 and the second wet hydrogen tank 18 are connected in parallel, water in the second wet hydrogen tank 18 can be directly replaced, wet hydrogen is supplied from the first wet hydrogen tank 17, and the atmosphere of the wet hydrogen can be continuously maintained in the sintering furnace.
Claims (6)
1. A wet hydrogen system, characterized in that the wet hydrogen system comprises a first wet hydrogen tank (17) and a second wet hydrogen tank (18), the first wet hydrogen tank (17) is connected with a main hydrogen pipeline (19) through a first pipeline (11), the first wet hydrogen tank (17) is connected with a sintering furnace pipeline (20) through a second pipeline (12), the second wet hydrogen tank (18) is connected with the main hydrogen pipeline (19) through a third pipeline (13), the second wet hydrogen tank (18) is connected with the sintering furnace pipeline (20) through a fourth pipeline (14), the second pipeline (12) is connected with the third pipeline (13) through a fifth pipeline (15), and the first pipeline (11) is connected with the fourth pipeline (14) through a sixth pipeline (16);
a first valve (1) is arranged at one end of the first pipeline (11) close to the first wet hydrogen barrel (17), a fifth valve (5) is arranged at one end close to the main hydrogen pipeline (19), and the joint of the sixth pipeline (16) and the first pipeline (11) is positioned between the first valve (1) and the fifth valve (5); a second valve (2) is arranged at one end of the second pipeline (12) close to the first wet hydrogen barrel (17), a third valve (3) is arranged at one end close to the sintering furnace pipeline (20), and the joint of the second pipeline (12) and the fifth pipeline (15) is positioned between the second valve (2) and the third valve (3); a seventh valve (7) is arranged at one end of the third pipeline (13) close to the second wet hydrogen barrel (18), an eighth valve (8) is arranged at one end close to the main hydrogen pipeline (19), and the joint of the third pipeline (13) and the fifth pipeline (15) is positioned between the seventh valve (7) and the eighth valve (8); a ninth valve (9) is arranged at one end of the fourth pipeline (14) close to the second wet hydrogen barrel (18), a tenth valve (10) is arranged at one end close to the sintering furnace pipeline (20), and the joint of the fourth pipeline (14) and the sixth pipeline (16) is positioned between the ninth valve (9) and the tenth valve (10); a sixth valve (6) is arranged on the fifth pipeline (15); and a fourth valve (4) is arranged on the sixth pipeline (16).
2. The wet hydrogen system according to claim 1, wherein the first wet hydrogen tank (17) and the second wet hydrogen tank (18) are each equipped with a pH sensor and a conductivity sensor.
3. A method of operating the wet hydrogen system according to claim 1 or 2, wherein the method of operating is specifically: opening a fifth valve (5), a first valve (1), a second valve (2), a sixth valve (6), a seventh valve (7), a ninth valve (9) and a tenth valve (10), closing the rest valves, connecting a first wet hydrogen barrel (17) and a second wet hydrogen barrel (18) in series, enabling dry hydrogen to flow through a main hydrogen pipeline (19), a first pipeline (11), a first wet hydrogen barrel (17), a second pipeline (12), a fifth pipeline (15), a third pipeline (13), a second wet hydrogen barrel (18) and a fourth pipeline (14) in sequence to form wet hydrogen, and enabling the wet hydrogen to be introduced into a sintering furnace through a sintering furnace pipeline (20).
4. The operating method of the wet hydrogen system according to claim 3, wherein when the wet hydrogen water is replaced, the eighth valve (8), the seventh valve (7), the ninth valve (9) and the tenth valve (10) are opened, the rest valves are closed, the water in the first wet hydrogen tank (17) is directly replaced, the dry hydrogen flows through the main hydrogen pipeline (19), the third pipeline (13), the second wet hydrogen tank (18) and the fourth pipeline (14) in sequence to form wet hydrogen, the wet hydrogen flows into the sintering furnace through the sintering furnace pipeline (20), and the sintering furnace is kept in the wet hydrogen atmosphere.
5. A method of operating the wet hydrogen system according to claim 1 or 2, wherein the method of operating is specifically: and opening an eighth valve (8), a seventh valve (7), a ninth valve (9), a fourth valve (4), a first valve (1), a second valve (2) and a third valve (3), and closing the rest valves, wherein the first wet hydrogen barrel (17) and the second wet hydrogen barrel (18) are connected in series, dry hydrogen sequentially flows through the main hydrogen pipeline (19), the third pipeline (13), the second wet hydrogen barrel (18), the fourth pipeline (14), the sixth pipeline (16), the first pipeline (11), the first wet hydrogen barrel (17) and the second pipeline (12) to form wet hydrogen, and the wet hydrogen is introduced into the sintering furnace through the sintering furnace pipeline (20).
6. The operating method of the wet hydrogen system according to claim 5, wherein when the wet hydrogen water is replaced, the fifth valve (5), the first valve (1), the second valve (2) and the third valve (3) are opened, the rest valves are closed, the water in the second wet hydrogen tank (18) is directly replaced, the dry hydrogen flows through the main hydrogen pipeline (19), the first pipeline (11), the first wet hydrogen tank (17) and the second pipeline (12) in sequence to form wet hydrogen, the wet hydrogen flows into the sintering furnace through the sintering furnace pipeline (20), and the sintering furnace is kept in the wet hydrogen atmosphere.
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