CN104984639A - Chemical waste gas purification device and purification method - Google Patents
Chemical waste gas purification device and purification method Download PDFInfo
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- CN104984639A CN104984639A CN201510402578.4A CN201510402578A CN104984639A CN 104984639 A CN104984639 A CN 104984639A CN 201510402578 A CN201510402578 A CN 201510402578A CN 104984639 A CN104984639 A CN 104984639A
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- waste gas
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- absorption
- spray
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- 239000007789 gas Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000746 purification Methods 0.000 title claims abstract description 12
- 239000002894 chemical waste Substances 0.000 title claims abstract description 8
- 239000002912 waste gas Substances 0.000 claims abstract description 51
- 238000010521 absorption reaction Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000011941 photocatalyst Substances 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 32
- 239000000126 substance Substances 0.000 claims description 22
- 238000001179 sorption measurement Methods 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 13
- 239000003344 environmental pollutant Substances 0.000 claims description 11
- 231100000719 pollutant Toxicity 0.000 claims description 11
- 239000002440 industrial waste Substances 0.000 claims description 9
- 238000000354 decomposition reaction Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 230000020477 pH reduction Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 5
- 239000002274 desiccant Substances 0.000 abstract 2
- 238000000638 solvent extraction Methods 0.000 abstract 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a chemical waste gas purification device, which comprises a spraying bin, a drying bin, a heating bin and an adsorbing bin in sequence from bottom to top, wherein a water storage tank is arranged in the spraying bin; a waste gas inlet is formed in the lower part of one side of the spraying bin; a high pressure pump is arranged above the waste gas inlet; a spraying pump is arranged on the inner wall of the spraying bin; a drying agent is arranged in the drying bin; partitioning plates are arranged in the drying bin; drying agents are respectively arranged in the bins; the partitioning plates are double layer thin sheets provided with through holes; electric heaters are arranged on the inner wall of the heating bin; two isolating mesh sieves are arranged in the absorbing bin; photocatalysts are arranged on the outer surfaces of the isolating mesh sieves; infrared lamps are arranged on the inner wall of the absorbing bin; an activated carbon absorption layer is arranged on the inner wall of the absorbing bin above the isolating mesh sieves; a waste gas outlet is formed above the absorbing bin. By adopting the chemical waste gas purification device and a purification method disclosed by the invention, treatment of particulate matters and gaseous compounds in chemical waste gas is realized, secondary pollution is reduced, and treatment efficiency is improved.
Description
Technical field
The present invention relates to a kind of chemical industrial waste gas purifying device and purification method.
Background technology
Chemical emission refers to the poisonous and hazardous gas of being discharged by chemical plant in Chemical Manufacture.Chemical emission is often a lot of containing pollutant kind, and physics and chemistry character is complicated, and toxicity is also not quite similar, serious environment pollution and affect health.The chemical emission composition difference that different Chemical Manufacture industry produces is very large.As main containing chlorine, hydrogen chloride, vinyl chloride, mercury, acetylene etc. in the waste gas that chlor-alkali industry produces, main containing nitrogen oxide, carbamide dust, carbon monoxide, ammonia, sulfur dioxide, methane etc. in the waste gas that Nitrogenous Fertilizer Industry produces.Chemical industry tail gas directly discharge can cause atmosphere pollution, and existing waste gas conversion equipment treatment effect is limited, meanwhile, easily causes secondary pollution.
Summary of the invention
The object of the present invention is to provide a kind of chemical industrial waste gas purifying device and purification method, the defect that prior art exists can be improved, realize the process to the particle in chemical emission and gaseous compound, reduce secondary pollution, improve treatment effeciency.
The present invention is achieved through the following technical solutions:
A kind of chemical industrial waste gas purifying device, comprise set gradually from bottom to top spray storehouse, dryness storehouse, heating cabinet and absorption storehouse;
Be provided with catch basin in described spray storehouse, described spray storehouse one side lower part is provided with exhaust gas entrance, and described exhaust gas entrance is provided with high-pressure pump, and the inwall in described spray storehouse is provided with spray pump;
Drier is provided with in described dryness storehouse, at least 2 division boards are provided with in described dryness storehouse, dryness storehouse is divided at least 3 bins by described division board, is provided with drier in described bin, and described division board is the double-layer plate being provided with through hole;
The inwall of described heating cabinet is provided with electric heater, and described electric heater is at least 4 that arrange along heating cabinet inwall uniform intervals;
Isolation mesh screen is provided with in described absorption storehouse, the outer surface of described isolation mesh screen is provided with photocatalyst, described absorption storehouse inwall is provided with infrared lamp, described infrared lamp is at least 4 that uniform intervals is arranged, the absorption storehouse inwall on described isolation mesh screen top is provided with activated carbon adsorption layer, above described absorption storehouse, is provided with gas outlet.
The present invention, by arranging spray storehouse, can be adsorbed the solid particulate matter in chemical emission, the gas that CO2, SO2 etc. simultaneously in removal chemical emission are soluble in water, avoids its discharge to cause greenhouse effects;
The present invention, by arranging at least three dry bins, can realize carrying out drying to waste gas, can more easily by high-temperature heating oxidation Decomposition when making waste gas enter heating cabinet;
The present invention, by arranging electric heater, can realize carrying out heat resolve to materials such as hydrocarbon, avoid its contaminated air;
The present invention is by arranging isolation mesh screen, isolation mesh screen arranges photocatalyst, utilize the pollutant such as solution formaldehyde, benzene,toluene,xylene, ammonia, TVOC that photocatalyst is degraded in chemical emission, because the sphere of action of photocatalyst is limited, therefore the present invention adopts mesh screen structure, when being covered by photocatalyst in mesh screen structure, the contact area of photocatalyst and chemical emission can be increased, improve treatment effeciency;
The present invention is by arranging activated carbon adsorption layer, can adsorb remaining a small amount of pollutant in the waste gas of isolation mesh screen, waste gas is after photocatalyst degraded, remaining a small amount of pollutant adsorbs through activated carbon adsorption layer, because the pollutant load in waste gas after treatment reduces greatly, now adopt activated carbon adsorption layer can realize adsorption effect, meanwhile, without the need to often changing activated carbon adsorption layer.
Further, for realizing the present invention better, between described heating cabinet and described dryness storehouse, be provided with air heater.
Further, for realizing the present invention better, in described spray storehouse, being provided with acid solution inlet, between described acid solution inlet and spray storehouse, being provided with one-way cock.
Further, for realizing the present invention better, described gas outlet is connected with air-introduced machine.
A kind of purification of chemical waste gas method, comprises the following steps:
S1: carry out acidification to waste gas, passes into the spray storehouse being added with acid solution by waste gas, the solid particle in waste gas is absorbed by the aqueous solution in spray storehouse, by acid solution by the nox adsorption in waste gas;
S2: the waste gas through step S1 process passes into dryness storehouse, through at least three layers of drier by the moisture absorption in waste gas, waste gas through super-dry enters in heating cabinet after air heater, by the electric heater in heating cabinet, high-temperature heating treatment is carried out to waste gas, make the hydrocarbon in waste gas and methane decomposition, and the gas after decomposing is passed in absorption storehouse, by the pollutant in the photocatalyst oxidation Decomposition gas in absorption storehouse;
S3: through the pollutant of waste gas in activated carbon adsorption layer absorption remainder of exhaust gas of step S2 process, and discharged by gas outlet.
Further, for realizing the present invention better, in described step S1, starting air-introduced machine, accelerating waste gas circulation.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present invention, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention.
Wherein: 101. spray storehouses, 102. dryness storehouses, 103. heating cabinets, 104. absorption storehouses, 105. exhaust gas entrances, 106. gas outlets, 107. isolation mesh screens, 108. activated carbon adsorption layers, 109. acid solution inlets, 110. division boards.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1:
As shown in Figure 1, a kind of chemical industrial waste gas purifying device, comprise set gradually from bottom to top spray storehouse 101, dryness storehouse 102, heating cabinet 103 and absorption storehouse 104;
Be provided with catch basin in described spray storehouse 101, described spray storehouse 101 1 side lower part is provided with exhaust gas entrance 105, and described exhaust gas entrance 105 is provided with high-pressure pump, described spray storehouse 10) inwall on be provided with spray pump;
Drier is provided with in described dryness storehouse 102, at least 2 division boards 110 are provided with in described dryness storehouse 102, dryness storehouse 102 is divided at least 3 bins by described division board 110, is provided with drier in described bin, and described division board 110 is for being provided with the double-layer plate of through hole;
The inwall of described heating cabinet 103 is provided with electric heater, and described electric heater is at least 4 that arrange along heating cabinet 103 inwall uniform intervals;
Isolation mesh screen 107 is provided with in described absorption storehouse 104, the outer surface of described isolation mesh screen 107 is provided with photocatalyst, described absorption storehouse 104 inwall is provided with infrared lamp, described infrared lamp is at least 4 that uniform intervals is arranged, absorption storehouse 104 inwall on described isolation mesh screen 107 top is provided with activated carbon adsorption layer 108, above described absorption storehouse 104, is provided with gas outlet 106.
Chemical emission is passed into spray storehouse 101 by exhaust gas entrance 105, in the catch basin that waste gas is entered in spray storehouse 101, the water absorption solid particulate matter wherein of waste gas in catch basin, to be removed the moisture in waste gas by the drier in dryness storehouse 102 through the waste gas of catch basin, 1300 degrees centigrade are heated to by the electrical heating high-temperature in heating cabinet 103, hydrocarbon in waste gas is decomposed, waste gas is through absorption storehouse 104, through being arranged on absorption storehouse 104 in photocatalyst by residual hydrocarbon and noxious material oxidation Decomposition after, after being adsorbed by activated carbon adsorption layer 108, export from gas outlet 106.
In order to reduce the power consumption of electric heater in heating cabinet, in the present invention, preferably, between described heating cabinet 103 and described dryness storehouse 102, air heater is provided with.By air heater, waste gas is preheated, the gas temperature entered in heating cabinet is improved, and then effectively can reduce the power consumption of heating cabinet 103.
In order to realize decomposing nitrogen oxide, in the present embodiment, preferably, in described spray storehouse 101, being provided with acid solution inlet 109, between described acid solution inlet 109 and spray storehouse 101, being provided with one-way cock.
In order to improve exhaust treatment efficiency, in the present embodiment, preferably, described gas outlet 106 is connected with air-introduced machine.By the air in induced draft blower withdraws absorption storehouse 104, make to present negative pressure in absorption storehouse 104, and then make waste gas can enter absorption storehouse 104 by spray storehouse 101, dryness storehouse 102 and heating cabinet 103 more quickly, improve treatment effeciency.
Embodiment 2:
A kind of purification of chemical waste gas method, comprises the following steps:
S1: acidification is carried out to waste gas, waste gas is passed into the spray storehouse 101 being added with acid solution, solid particle in waste gas is absorbed by the aqueous solution in spray storehouse, by acid solution by the nox adsorption in waste gas, start the air in induced draft blower withdraws absorption storehouse 104, make to present negative pressure in absorption storehouse;
S2: the waste gas through step S1 process passes into dryness storehouse 102, through at least three layers of drier by the moisture absorption in waste gas, waste gas through super-dry enters in heating cabinet 103 after air heater, by the electric heater in heating cabinet 103, high-temperature heating treatment is carried out to waste gas, make the hydrocarbon in waste gas and methane decomposition, and the gas after decomposing is passed in absorption storehouse 104, by the pollutant in the photocatalyst oxidation Decomposition gas in absorption storehouse;
S3: to adsorb the pollutant in remainder of exhaust gas through the waste gas of step S2 process through activated carbon adsorption layer 108, and discharged by gas outlet.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a chemical industrial waste gas purifying device, is characterized in that: comprise set gradually from bottom to top spray storehouse (101), dryness storehouse (102), heating cabinet (103) and absorption storehouse (104);
Be provided with catch basin in described spray storehouse (101), described spray storehouse (101) side lower part is provided with exhaust gas entrance (105), and described exhaust gas entrance (105) is provided with high-pressure pump, and the inwall in described spray storehouse (101) is provided with spray pump;
Drier is provided with in described dryness storehouse (102), at least 2 division boards (110) are provided with in described dryness storehouse (102), dryness storehouse (102) is divided at least 3 bins by described division board (110), be provided with drier in described bin, described division board (110) is for being provided with the double-layer plate of through hole;
The inwall of described heating cabinet (103) is provided with electric heater, and described electric heater is at least 4 that arrange along heating cabinet (103) inwall uniform intervals;
Isolation mesh screen (107) is provided with in described absorption storehouse (104), the outer surface of described isolation mesh screen (107) is provided with photocatalyst, described absorption storehouse (104) inwall is provided with infrared lamp, described infrared lamp is at least 4 that uniform intervals is arranged, absorption storehouse (104) inwall on described isolation mesh screen (107) top is provided with activated carbon adsorption layer (108), and described top, absorption storehouse (104) is provided with gas outlet (106).
2. a kind of chemical industrial waste gas purifying device according to claim 1, is characterized in that: between described heating cabinet (103) and described dryness storehouse (102), be provided with air heater.
3. a kind of chemical industrial waste gas purifying device according to claim 1 and 2, it is characterized in that: in described spray storehouse (101), be provided with acid solution inlet (109), between described acid solution inlet (109) and spray storehouse (101), be provided with one-way cock.
4. a kind of chemical industrial waste gas purifying device according to claim 1 and 2, is characterized in that: on described gas outlet (106), be connected with air-introduced machine.
5. a purification of chemical waste gas method, is characterized in that: comprise the following steps:
S1: carry out acidification to waste gas, passes into the spray storehouse (101) being added with acid solution, the solid particle in waste gas is absorbed by the aqueous solution in spray storehouse, by acid solution by the nox adsorption in waste gas by waste gas;
S2: the waste gas through step S1 process passes into dryness storehouse (102), through at least three layers of drier by the moisture absorption in waste gas, waste gas through super-dry enters in heating cabinet (103) after air heater, by the electric heater in heating cabinet (103), high-temperature heating treatment is carried out to waste gas, make the hydrocarbon in waste gas and methane decomposition, and the gas after decomposing is passed in absorption storehouse (104), by the pollutant in the photocatalyst oxidation Decomposition gas in absorption storehouse;
S3: through the pollutant of waste gas in activated carbon adsorption layer (108) absorption remainder of exhaust gas of step S2 process, and discharged by gas outlet.
6. a kind of purification of chemical waste gas method according to claim 5, is characterized in that: in described step S1, starts air-introduced machine, accelerates waste gas circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510402578.4A CN104984639A (en) | 2015-07-10 | 2015-07-10 | Chemical waste gas purification device and purification method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510402578.4A CN104984639A (en) | 2015-07-10 | 2015-07-10 | Chemical waste gas purification device and purification method |
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| Publication Number | Publication Date |
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| CN104984639A true CN104984639A (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510402578.4A Pending CN104984639A (en) | 2015-07-10 | 2015-07-10 | Chemical waste gas purification device and purification method |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813457A (en) * | 2015-11-30 | 2017-06-09 | 湖南恒生制药股份有限公司 | A kind of dehydration drying system for Chinese medicine dregs |
| CN108050623A (en) * | 2017-12-15 | 2018-05-18 | 山东佳星环保科技有限公司 | A kind of chemical workshop fresh air oxygenation purification plant |
| TWI678464B (en) * | 2018-12-25 | 2019-12-01 | 馮秋誠 | Cleanse system of diesel particulate filter |
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| JP2000107540A (en) * | 1998-10-05 | 2000-04-18 | Wave:Kk | Waste gas treatment system |
| JP2001070751A (en) * | 1999-09-06 | 2001-03-21 | Ebara Corp | Method and apparatus for treating waste gas containing volatile organic substance and/or malodorous substance |
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| JP2000107540A (en) * | 1998-10-05 | 2000-04-18 | Wave:Kk | Waste gas treatment system |
| JP2001070751A (en) * | 1999-09-06 | 2001-03-21 | Ebara Corp | Method and apparatus for treating waste gas containing volatile organic substance and/or malodorous substance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106813457A (en) * | 2015-11-30 | 2017-06-09 | 湖南恒生制药股份有限公司 | A kind of dehydration drying system for Chinese medicine dregs |
| CN108050623A (en) * | 2017-12-15 | 2018-05-18 | 山东佳星环保科技有限公司 | A kind of chemical workshop fresh air oxygenation purification plant |
| TWI678464B (en) * | 2018-12-25 | 2019-12-01 | 馮秋誠 | Cleanse system of diesel particulate filter |
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Effective date of registration: 20160122 Address after: 213000 Jiangsu city in Changzhou Province, Wujin national hi tech Development Zone, Liuzhou Road No. 18 Applicant after: CHANGZHOU HANGBIAO PRECISION MACHINERY CO., LTD. Address before: Loe Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu province 213000 Applicant before: CHANGZHOU LONGRUN MACHINERY CO., LTD. |
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Application publication date: 20151021 |
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| RJ01 | Rejection of invention patent application after publication |