CN2080944U - Ultra-pure hydrogen generator - Google Patents
Ultra-pure hydrogen generator Download PDFInfo
- Publication number
- CN2080944U CN2080944U CN90203336.0U CN90203336U CN2080944U CN 2080944 U CN2080944 U CN 2080944U CN 90203336 U CN90203336 U CN 90203336U CN 2080944 U CN2080944 U CN 2080944U
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- CN
- China
- Prior art keywords
- tube
- anode
- pure hydrogen
- positive electrode
- hydrogen generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000001257 hydrogen Substances 0.000 title claims abstract description 37
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 37
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000000926 separation method Methods 0.000 claims abstract description 50
- 239000001301 oxygen Substances 0.000 claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 239000003513 alkali Substances 0.000 claims description 28
- 239000007864 aqueous solution Substances 0.000 claims description 26
- 229910052759 nickel Inorganic materials 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 13
- 230000004888 barrier function Effects 0.000 claims description 10
- 238000006555 catalytic reaction Methods 0.000 claims description 9
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000391 magnesium silicate Substances 0.000 claims description 9
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 9
- 235000019792 magnesium silicate Nutrition 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- FAUWSVSZYKETJJ-UHFFFAOYSA-N palladium titanium Chemical compound [Ti].[Pd] FAUWSVSZYKETJJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 abstract description 2
- 239000010425 asbestos Substances 0.000 abstract 2
- 229910052895 riebeckite Inorganic materials 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Inorganic materials [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910001316 Ag alloy Inorganic materials 0.000 description 3
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model relates to an ultra-pure hydrogen generator which belongs to the gas source device matched with the phase chromatograph. The ultra-pure hydrogen generator mainly adopts the special-grade asbestos fiber hydrogen-oxygen separation film as the carrier of the electrolyte to isolate the electrolytic separation tanks of the anode side and the cathode side. The ultra-pure hydrogen generator is provided with a purifying cylinder, a drying cylinder and a catalytic cylinder. The electrolytic separation tank is formed by the anode, the nickel wire screen of the anode, an insulating gasket made from the anticorrosive material, the special-grade asbestos fiber hydrogen-oxygen separation film, the nickel wire screen of the cathode and the cathode which are orderly laminated. The anode and cathode electrodes are tightly pressed on both sides of the insulating gasket. The anode electrode, the cathode electrode and the insulating gasket are fixed into a whole. The hydrogen gas generated by the utility model has high purity. The ultra-pure hydrogen generator has small volume and low production cost, and is safe and convenient to add the water.
Description
The utility model relates to a kind of ultrapure gas generator, belongs to the supporting compressed air source unit of gas chromatograph.
Existing ultra pure hydrogen generator generally is made up of power regulator device, alkali aqueous solution container, electrolytic separation pond, and what have also is equipped with the gas-liquid separation tube.Employing aqueous solution of electrolysis hydrogen oxidation potassium or sodium hydroxide in the electrolytic separation pond utilizes the permeation hydrogen ion technology of palladium to produce ultra-pure hydrogen.The positive electrode that its electrolytic separation pond is welded as a whole with argon arc by pure nickel pipe, pure nickel lid, pure nickel rod, anode flange dish and several palladium-silver alloy Guan Yiduan solder up the other end are connected on negative electrode on the cathode flange dish with argon arc welding and the packing ring of corrosion resistant material is formed, positive electrode is enclosed within outside the negative electrode, and the packing ring pad is also fixed both insulated enclosures to the three with screw between anode flange dish and cathode flange dish.The 15EHGIB2 type ultra pure hydrogen generator of the OPGU-5003 type that DCH-200-1-5 type ultra-pure hydrogen producer that Institute of Chemistry, Academia Sinica, Beijing second environment protection instrument plant, Tianjin analytical instrument factory produce and U.S. prestige Lin Tuomisi company make and day island proper Tianjin company production all adopts above-mentioned electrolytic separation pond.This electrolytic separation pond is used and is cost an arm and a leg, strict complicated, the low palladium-silver alloy electrode tube of activation yield rate of manufacturing process, and this electrolytic separation pond processes, assembly technology is complicated, and difficulty is higher, so super hydrogen generator complete machine cost is higher; This in addition electrolytic separation pond use need about 0.5-1MPa hydrogen-pressure, can cause short circuit to burn electrode or spray alkali accident accidentally otherwise use, it is very inconvenient to add water.
The purpose of this utility model provides a kind of ultra pure hydrogen generator cheap, safe and reliable, that volume is less, purity is higher a kind of improved electrolytic separation pond particularly is provided.
This ultra pure hydrogen generator comprises a cover electric current engagement positions, alkali aqueous solution container, electrolytic separation pond, gas-liquid separation tube, output flow controlling valve of voltage regulation, it is characterized in that: adopted with superfine fibrous magnesium silicate hydrogen-oxygen barrier film as the ionogen carrier and isolate anode side and the electrolytic separation pond of cathode side, this hydrogen-oxygen barrier film adsorbing electrolyte ability is strong, good airproof performance; In order to also have purifying tube, drying cylinder, catalysis tube in this ultra pure hydrogen generator of purity that improves hydrogen; The alkali aqueous solution container is higher than the electrolytic separation pond in the position of vertical direction 1/2nd, make the liquid level position of alkali aqueous solution in the alkali aqueous solution container be higher than the electrolytic separation pond more than 3 centimetres, the pressure that utilizes liquid level difference with alkali aqueous solution compress into the electrolytic separation pond, oxygen is taken back the alkali aqueous solution container with alkali aqueous solution and is formed circulation.
Below in conjunction with drawings and Examples the utility model is explained in detail:
Fig. 1 is that circuit of the present utility model connects and the pipe connection synoptic diagram.
Fig. 2 is an electrolytic separation of the present utility model pond sectional view.
Fig. 3 is the decomposing schematic representation in electrolytic separation pond.(ratio is dwindled)
Fig. 4 is the positive electrode electrolysis working face front view in electrolytic separation pond.
Fig. 5 is the side-view that most preferred embodiment of the present utility model is removed right side plate.
Among the figure: the 1st, current rectifier assembly, the 2nd, the alkali aqueous solution container, the 3rd, the electrolytic separation pond, the 4th, the gas-liquid separation tube, the 5th, purifying tube, the 6th, drying cylinder, the 7th, the catalysis tube, the 8th, the output flow controlling valve of voltage regulation, the 9th, positive electrode, the 10th, the anode nickel silk screen, the 11st, the insulated enclosure pad, the 12nd, superfine fibrous magnesium silicate hydrogen-oxygen barrier film, the 13rd, the cathode nickel silk screen, the 14th, negative electrode, the 15th, groove, the 16th, the seam step, the 17th, port, the 18th, micro-variable valve, the 19th, tensimeter, the 20th, pressure controlled valve.
With reference to Fig. 1, current rectifier assembly (1) is defeated by electrolytic separation pond (3) direct current, the alkali aqueous solution that sodium hydroxide or potassium hydroxide are water-soluble, anode side in electrolytic separation pond (3) under the effect of electric current produces oxygen, oxygen promotes alkali aqueous solution through portalling and liquid returning tube returns alkali aqueous solution container (2), oxygen is discharged to atmosphere by the top of this container, alkali aqueous solution enters electrolytic separation pond (3) by pipeline again under the effect of hydraulic pressure difference pressure, alkali aqueous solution forms circulation in electrolytic separation pond (3) and alkali aqueous solution container (2); Cathode side in electrolytic separation pond (3) produces hydrogen, and under the effect of hydrogen pressure, alkali aqueous solution was flow back to anode side in about five minutes, and cathode side is worked under no liquid status.The hydrogen that produces enters the alkali aqueous solution (vaporific) that contains in gas-liquid separation tube (4) separating hydrogen gas from the side by pipeline and makes it to discharge from the bottom of this pipe.Hydrogen enters the alkali mist of purifying tube (5) the elimination denier of filled nylon fiber through pipeline from the top of gas-liquid separation tube (4), hydrogen after the purification enters the drying cylinder (6) of filling discolour silica gel through pipeline and further purifies, hydrogen enters the catalysis tube (7) that palladium titanium fiber catalyst is housed by pipeline and carries out oxidation and purify then, oxygen and hydrogen chemical combination under the effect of catalyzer generates the water of trace, makes the purity of hydrogen improve ten to 100 times.Last hydrogen by output flow controlling valve of voltage regulation (8) output, is connected to gas chromatograph through pipeline.
The electrolytic separation pond is the key device of ultra pure hydrogen generator, and the utility model has been done substantial improvement to the electrolytic separation pond.With reference to Fig. 2, Fig. 3, Fig. 4, the insulated enclosure pad (11) that electrolytic separation of the present utility model pond (3) is made by positive electricity (9), anode nickel silk screen (10), corrosion resistant material, superfine fibrous magnesium silicate hydrogen-oxygen barrier film (12), cathode nickel silk screen (13), negative electrode (14) overlap together formation in proper order.Positive electrode (9) and negative electrode (14) are pressed on the two sides of insulated enclosure pad (11) and positive electrode (9) and negative electrode (14) and insulated enclosure pad (11) are fixed as one, and two contact surfaces of three bear 10Kg/cm
2The water-tight gas leakage of pressure, the middle part of insulated enclosure pad (11) has port (17), insulated enclosure pad (11) inboard all around along port (17) seam step (16) to be arranged, the seam step (16) of being close to insulated enclosure pad (11) around the superfine fibrous magnesium silicate hydrogen-oxygen barrier film (12), cathode nickel silk screen (13) presses superfine fibrous magnesium silicate hydrogen-oxygen barrier film (12) and makes this hydrogen-oxygen barrier film press seam step (16), and anode nickel silk screen (10) is contained in the port (17) of insulated enclosure pad (11).Anode nickel silk screen, cathode nickel silk screen are stacked by the nickel wire net more than four layers and constitute, and positive electrode (9) and negative electrode (14) are pressed anode nickel silk screen and cloudy cathode nickel silk screen, with the circulation of the electroconductibility that guarantees electrolytic separation pond (3) and liquid, gas.Positive electrode (9) and negative electrode (14) are tabular, at positive electrode (9) two the inboard electrolysis working faces relative with negative electrode (14), distribution is less than the groove (15) of 7mm, and groove crosses one another as the passage of alkali aqueous solution and gas, and the distance between the groove is less than 7mm.Positive electrode (9) and negative electrode (14) adopt steel, copper or aluminium manufacturing, have reduced the electrode cost and have not influenced the purity of hydrogen in positive electrode (9) two inboard electrolysis working faces nickel plating relative with negative electrode (14).
Because it is the electrolytic separation pond (3) of hydrogen-oxygen barrier film (12) and purifying tube (5), drying cylinder (6), catalysis tube (7) current stabilization purge drying device that this super hydrogen generator has adopted with superfine fibrous magnesium silicate, the utlity model has significant superiority: 1, electrolytic separation pond (3) do not adopt Rare Metals Materials, processing and assembling is done the electrolysis of electrode than pure nickel and palladium-silver alloy pipe, and he is low from the difficulty in pond, the complete machine cost is significantly descended, only be below 1/2nd of domestic like product, volume only is 1/4th of a domestic like product; 2, reduce electrolytic separation pond applied voltage, to bear current density big, improved electrolytic efficiency, every square centimeter battery lead plate per minute can produce the hydrogen of 40mL; 3, the alkali aqueous solution of electrolytic separation pond anode side is in atmospheric pressure state, has avoided high pressure spray alkali accident and make up water very convenient; 4, only the oxygen level in anode side event hydrogen is extremely low for alkali aqueous solution, and the actual measurement oxygen level is below 1.2PPM, and through purification, dry, catalytic deoxidation, the purity of the ultra-pure hydrogen of the utility model generation is better than 99.9999% again, and oxygen level is 0.86PPM; 5, adopt the pressure of hydraulic pressure difference to make alkali aqueous solution form circulation, good heat dissipation effect has reduced the working temperature in electrolytic separation pond.
As most preferred embodiment, the current rectifier assembly of this ultra pure hydrogen generator is output as 2.0～2.4V, 30A, and electrolytic separation pond (3) adopt a pair of A
3Positive electrode of outer nickel plating (9) and negative electrode (14), anode nickel silk screen (10) and cathode nickel silk screen (13) constitute with five layer of 60～80 purpose nickel wire net, the thick 0.3mm of superfine fibrous magnesium silicate hydrogen-oxygen barrier film (12), with reference to Fig. 5, most preferred embodiment also is equipped with tensimeter (19), pressure controlled valve (20), micro-variable valve (18), / 2nd positions of the molten device of alkali aqueous solution (2) are higher than electrolytic separation pond (3) 6cm, and the output hydrogen pressure is 4Kg/cm
2, airflow stability is 1%.
Claims (4)
1, a kind of ultra pure hydrogen generator, it comprises a shell, current rectifier assembly, alkali aqueous solution container, electrolytic separation pond, gas-liquid separation tube, output flow controlling valve of voltage regulation, it is characterized in that:
(a) insulated enclosure pad, the superfine fibrous magnesium silicate hydrogen-oxygen made by positive electrode, anode nickel silk screen, corrosion resistant material of electrolytic separation pond overlaps together in proper order from film, cathode nickel silk screen, negative electrode and constitutes, positive electrode and negative electrode are pressed on the two sides of insulated enclosure pad and positive electrode and negative electrode and insulated enclosure pad are fixed as one
(b) there is port at insulated enclosure pad middle part, and there is the seam step inboard around the insulated enclosure pad along port, closely is attached to the seam step around the superfine fibrous magnesium silicate hydrogen-oxygen barrier film,
(c) anode nickel silk screen and cathode nickel silk screen are all stacked by the nickel wire net more than four layers and constitute, and the anode nickel silk screen is contained in the port of insulated enclosure pad,
(d) positive electrode in electrolytic separation pond and negative electricity tabular very.
(e) the alkali aqueous solution container is higher than the electrolytic separation pond in the position of vertical direction 1/2nd,
(f) purifying tube, drying cylinder, catalysis tube also are installed,
(g) the electrolytic separation pond has two pipelines to communicate with the alkali aqueous solution container, has a pipeline and gas-liquid separation socket joint logical,
(h) end of purifying tube pipeline and gas-liquid separation tube UNICOM, the other end is logical with a termination of pipeline and drying cylinder, and the other end of drying cylinder is logical with a termination of pipeline and catalysis tube, and the other end of catalysis tube uses pipeline and output flow controlling valve of voltage regulation to connect.
2, according to the described ultra pure hydrogen generator of claim 1, it is characterized in that said purifying tube is the purifying tube of filled nylon fiber, said catalysis tube is the catalysis tube of interior dress palladium titanium fiber catalyst.
3, according to claim 1,2 described ultra pure hydrogen generators, it is characterized in that distributing less than the groove of 7mm at positive electrode two medial surfaces relative with negative electrode, groove crosses one another, and the distance between the groove is less than 7mm.
4,, it is characterized in that said positive electrode and negative electrode are positive electrode and the negative electrodes at the plating nickel on surface of distribution groove according to the described ultra pure hydrogen generator of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90203336.0U CN2080944U (en) | 1990-03-20 | 1990-03-20 | Ultra-pure hydrogen generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90203336.0U CN2080944U (en) | 1990-03-20 | 1990-03-20 | Ultra-pure hydrogen generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2080944U true CN2080944U (en) | 1991-07-17 |
Family
ID=4884551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90203336.0U Withdrawn CN2080944U (en) | 1990-03-20 | 1990-03-20 | Ultra-pure hydrogen generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2080944U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045013C (en) * | 1993-05-29 | 1999-09-08 | 中国科学院大连化学物理研究所 | High-efficient microporous diaphragm water electrolyzing bath |
| WO2014064627A1 (en) * | 2012-10-24 | 2014-05-01 | Quantum Hydrogen Limited | Gas generating apparatus and components thereof |
| CN108468067A (en) * | 2017-02-14 | 2018-08-31 | 阿海珐氢能公司 | Electrolyzer spacer and electrolyzer equipped with this spacer |
-
1990
- 1990-03-20 CN CN90203336.0U patent/CN2080944U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045013C (en) * | 1993-05-29 | 1999-09-08 | 中国科学院大连化学物理研究所 | High-efficient microporous diaphragm water electrolyzing bath |
| WO2014064627A1 (en) * | 2012-10-24 | 2014-05-01 | Quantum Hydrogen Limited | Gas generating apparatus and components thereof |
| CN108468067A (en) * | 2017-02-14 | 2018-08-31 | 阿海珐氢能公司 | Electrolyzer spacer and electrolyzer equipped with this spacer |
| CN108468067B (en) * | 2017-02-14 | 2022-04-26 | 阿海珐氢能公司 | Electrolyzer spacer and electrolyzer equipped with such a spacer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE ADDRESS; FROM: NO. 83, LIU LANE, TAIYUAN CITY, SHANXI PROVINCE, 030002 TO: 2-3-702, TIANTUONANYINGJIANGXILI, NANKAI DISTRICT, TIANJIN CITY, 300190 |
|
| CP03 | Change of name, title or address |
Address after: 300190, Tianjin, Nankai District, Tian Cheng, South Ying, Jiangxi, 2-3-702 Patentee after: Li Dong Address before: Shanxi city of Taiyuan Province Liu Xiang 030002 No. 83 Patentee before: Li Dong |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |