CN104003419A - Device and method for recycling waste ammonia gas in arsenic coking process - Google Patents
Device and method for recycling waste ammonia gas in arsenic coking process Download PDFInfo
- Publication number
- CN104003419A CN104003419A CN201410268863.7A CN201410268863A CN104003419A CN 104003419 A CN104003419 A CN 104003419A CN 201410268863 A CN201410268863 A CN 201410268863A CN 104003419 A CN104003419 A CN 104003419A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- strong aqua
- useless
- tower
- storage tank
- 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.)
- Granted
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a device and method for recycling waste ammonia gas in an arsenic coking process, and belongs to the technical field of ammoniation desulfuration and coking. The method for recycling the waste ammonia gas in the arsenic coking process comprises the following steps that 1, the waste ammonia gas at the top of a fixed ammonia tower is guided out; 2, pressure of the top of the ammonia tower is regulated; 3, liquid and solid which are carried in the waste ammonia gas are separated; 4, the concentration of ammonium hydroxide is regulated; 5, the ammonia gas is condensed and cooled to the temperature suitable for storage and conveying, and then the ammonia gas is conveyed to a strong ammonium hydroxide storage tank; 6, diffusion ammonia gas at the top of the strong ammonium hydroxide storage tank is recycled; 7, a little of oil matter included in the ammonium hydroxide is filtered out; 8, the ammonium hydroxide with the standard quality is recycled. According to the method for recycling the waste ammonia gas in the arsenic coking process, the ammonia gas including the waste ammonia gas can be recycled, and production cost is saved.
Description
Technical field
The present invention relates to ammonification desulfurization and coking technology field, particularly a kind of device and method that reclaims useless ammonia in coking arsenic flow process.
Background technology
What more domestic Coking Companies adopted is AS coal-gas recovering flow process, and the generation per hour of its fixed ammonia tower contains the waste gas of ammonia 20-30% (w/w) in a large number.This strand of waste gas was to adopt ammonia to burn flow process in the past, that is: under catalyst action, after burning in ammonia incinerator, approximately 1050 ℃ of high-temp waste gas of generation enter waste heat boiler and produce steam, then, waste gas further cooling, washing after get back in the gas line before gas blower.In this process, to consume a large amount of coke-oven gas, the annual replacement charge of ammonia incinerator catalyzer is also very expensive, after burning, large quantity of exhaust gas enters coke oven gas system, when having reduced the calorific value of coke-oven gas, also increase the load of gas blower, consumed this strand of waste gas of water quench, and ammonia incinerator and follow-up waste gas is cooling, washing device complex process, very high to material requirement, main pipeline, equipment be take titanium material as main.
In prior art, sintering ammonia type flue gas desulfurizing technology is generally adopted, but ammonia desulfurizing process must be bought liquefied ammonia as sweetening agent, because liquefied ammonia price is high, so the running cost of sintering desulfuration is also very high.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of ammonia that can reclaim ammonia-contaminated gas, the method saving production cost.
For solving the problems of the technologies described above, the invention provides a kind of method that reclaims useless ammonia in coking arsenic flow process, comprise step 1, the useless ammonia of fixed ammonia top of tower is drawn; Step 2, the pressure of adjusting ammonia top of tower, guaranteeing, when reclaiming useless ammonia, does not affect the normal operation of ammonia tower; Step 3, separates liquid and the solid in useless ammonia, carried secretly, guarantees the purity of ammoniacal liquor; Step 4, regulates ammonia concn, makes ammonia concn in the needed concentration range of sintering desulfuration; Step 5, is cooled to the applicable temperature that stores and carry by ammonia condensation, is then delivered to strong aqua storage tank; Step 6, is reclaimed the ammonia that diffuses at strong aqua storage tank top; Step 7, filters out a small amount of oily substance containing in ammoniacal liquor, guarantees that the quality of ammoniacal liquor meets the requirement of sintering desulfuration; Step 8, reclaims, produces ammonium sulfate or carry out sintering desulfuration the ammoniacal liquor of requisite quality.
Further, described step 2 comprises that useless ammonia, by after the voltage stabilizing of tower top pressure setter, makes fixed ammonia top of tower pressure-stabilisation in a rational scope, to guarantee the normal running of fixed ammonia tower.
Further, described step 3 comprises that useless ammonia enters gas, liquid, solid separator and isolates contained liquid and solid dregs.
Further, described step 4 comprises that useless ammonia enters ammonia concn setter, water spray pre-cooled in, the concentration of ammonia is adjusted to suitable scope.
Further, described step 5 comprises that useless ammonia enters condensate cooler and carries out condensing cooling, is used for the recirculated water of self-circulating water cooling tower and water circulating pump to carry out tentatively coolingly, then by the water at low temperature in low temperature water tank, ammonia condensation is cooled to below 25 ℃.
Further, described step 6 comprises that the ammonia that diffuses at strong aqua storage tank top enters ammonia collector and reclaimed, or the gas line before access gas blower.
Further, described step 7 comprises: the strong aqua in strong aqua storage tank is pumped into and in oil strainer, is filtered out contained a small amount of oily substance by strong aqua.
Further, described step 8 comprises strong aqua for sintering desulfuration, delivers to sulphur ammonium saturex and produce ammonium sulfate fertilizer or pack tank car into.
Reclaim a device for useless ammonia in coking arsenic flow process, the useless ammonia producing for reclaiming fixed ammonia tower; It is characterized in that, described useless ammonia device comprises: manostat, gas-liquid-solid separator, ammonia concn setter, condensate cooler, strong aqua storage tank, diffuse ammonia collector, low temperature water tank, strong aqua pump, oil strainer, circulating water cooling tower, water circulating pump and recovering mechanism; Described manostat is arranged on the top of described fixed ammonia tower, and the useless ammonia of drawing is carried out to pressure adjusting; Described gas-liquid-solid separator is connected with described manostat, for separating of the liquid and the solid dregs that contain in the ammonia that goes out to give up; Described ammonia concn setter is connected with described gas-liquid-solid separator, for the concentration of ammonia being adjusted to suitable scope and being carried out pre-cooled to ammonia; Described condensate cooler is connected with described ammonia concn setter, for ammonia is carried out to condensing cooling; Described recirculated water cooling tower is connected with described condensate cooler by described water circulating pump, tentatively cooling for described ammonia is carried out; Described low temperature water tank is connected with described condensate cooler, by the water at low temperature in described low temperature water tank, ammonia condensation is cooled to below 25 ℃; Described strong aqua storage tank is connected with described condensate cooler, for receiving the strong aqua after condensing cooling; Describedly diffuse the top that ammonia collector is arranged on described strong aqua storage tank, for collecting the ammonia at strong aqua storage tank top; Described oil strainer is connected with described strong aqua storage tank by described strong aqua pump, for filtering the oily substance of ammoniacal liquor; Described recovering mechanism is connected with described oil strainer, for receiving standard compliant ammoniacal liquor.
Further, described recovering mechanism comprises strong aqua tank car and sulphur ammonium saturex; Described strong aqua tank car and sulphur ammonium saturex are connected with described oil strainer respectively
In recovery coking arsenic flow process provided by the invention, the method for useless ammonia is first drawn the useless ammonia of fixed ammonia tower top, then regulate the pressure of ammonia top of tower, guarantee when reclaiming useless ammonia, do not affect the normal operation of ammonia tower, then liquid and the solid in useless ammonia, carried secretly are separated, guarantee the purity of ammoniacal liquor, again ammonia concn is regulated, make ammonia concn in the needed concentration range of sintering desulfuration, then ammonia condensation is cooled to the temperature that is applicable to storage and carries, then be delivered to strong aqua storage tank, the ammonia that diffuses at strong aqua storage tank top is reclaimed, filter out afterwards a small amount of oily substance containing in ammoniacal liquor, guarantee that the quality of ammoniacal liquor meets the requirement of sintering desulfuration, finally the ammoniacal liquor of quality standard is reclaimed, produce ammonium sulfate or carry out sintering desulfuration, saved production cost, like this when producing strong aqua with useless ammonia, guarantee the production stability of coking original system, and produce the strong aqua that meets sintering desulfuration specification of quality.
Accompanying drawing explanation
The process flow sheet of the method for useless ammonia in the recovery coking arsenic flow process that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Referring to Fig. 1, a kind of device that reclaims useless ammonia in coking arsenic flow process that the embodiment of the present invention provides, comprises manostat 1, gas-liquid-solid separator 2, ammonia concn setter 3, condensate cooler 4, strong aqua storage tank 5, diffuses ammonia collector 6, low temperature water tank 14, strong aqua pump 7, oil strainer 8, circulating water cooling tower 11, water circulating pump 12 and recovering mechanism.Manostat 1 is arranged on the top of fixed ammonia tower 13, and the useless ammonia of drawing is carried out to pressure adjusting.Gas-liquid-solid separator 2 is connected with manostat 1, for separating of the liquid and the solid dregs that contain in the ammonia that goes out to give up.Ammonia concn setter 3 is connected with gas-liquid-solid separator 2, for the concentration of ammonia being adjusted to suitable scope and being carried out pre-cooled to ammonia.Condensate cooler 4 is connected with ammonia concn setter 3, for ammonia is carried out to condensing cooling; Recirculated water cooling tower 11 is connected with condensate cooler 4 by water circulating pump 12, tentatively cooling for ammonia is carried out.Low temperature water tank 14 is connected with condensate cooler 4, by the water at low temperature in low temperature water tank 14, ammonia condensation is cooled to below 25 ℃.Strong aqua storage tank 5 is connected with condensate cooler 4, for receiving the strong aqua after condensing cooling.Diffuse ammonia collector 6 and be arranged on the top of strong aqua storage tank 5, for collecting the ammonia at strong aqua storage tank 5 tops.Oil strainer 8 is connected with strong aqua storage tank 5 by strong aqua pump 7, for filtering the oily substance of ammoniacal liquor.Recovering mechanism is connected with oil strainer 8, and recovering mechanism comprises strong aqua tank car 9 and sulphur ammonium saturex 10; Strong aqua tank car 9 and sulphur ammonium saturex 10 are connected with oil strainer 8 respectively, for receiving standard compliant ammoniacal liquor.
When using the present invention to carry out Ammonia recovery, comprise the following steps:
Step 1, draws the useless ammonia of fixed ammonia tower top 13; Step 2, useless ammonia, by after 1 voltage stabilizing of top of tower pressure-regulator, is stabilized in a rational scope fixed ammonia tower 13 top pressures, to guarantee the normal running of fixed ammonia tower; Step 3, useless ammonia enters gas, liquid, solid separator 2 and isolates contained liquid and solid dregs, guarantees the purity of ammoniacal liquor; Step 4, useless ammonia enters ammonia concn setter 3, water spray pre-cooled in, the concentration of ammonia is adjusted to 18-20%; Step 5, useless ammonia enters condensate cooler 4 and carries out condensing cooling, being used for the recirculated water of self-circulating water cooling tower 11 and water circulating pump 12 carries out tentatively coolingly, then by the water at low temperature in low temperature water tank 14, ammonia condensation is cooled to, below 25 ℃, then be delivered to strong aqua storage tank 5; Step 6, the ammonia that diffuses at strong aqua storage tank 5 tops enters ammonia collector 6 and is reclaimed, when the interior ammonia of strong aqua storage tank 5 overflows, the ammonia collector 6 absorption ammonia of can spraying water voluntarily, prevent from entering atmosphere, or the gas line before access gas blower, surrounding environment is not caused to any pollution; Step 7, the strong aqua in strong aqua storage tank 5 is delivered in oil strainer 8 and is filtered out contained a small amount of oily substance by strong aqua pump 7, and oils content is controlled to 10mg/L, guarantees that the quality of ammoniacal liquor meets the requirement of sintering desulfuration; Step 8, carries out strong aqua sintering desulfuration, delivers to sulphur ammonium saturex 10 production ammonium sulfate fertilizers or pack strong aqua tank car 9 into.
In recovery coking arsenic flow process provided by the invention, the method for useless ammonia is first drawn the useless ammonia of fixed ammonia tower top, then regulate the pressure of ammonia top of tower, guarantee when reclaiming useless ammonia, do not affect the normal operation of ammonia tower, then liquid and the solid in useless ammonia, carried secretly are separated, guarantee the purity of ammoniacal liquor, again ammonia concn is regulated, make ammonia concn in the needed concentration range of sintering desulfuration, then ammonia condensation is cooled to the temperature that is applicable to storage and carries, then be delivered to strong aqua storage tank, the ammonia that diffuses at strong aqua storage tank top is reclaimed, filter out afterwards a small amount of oily substance containing in ammoniacal liquor, guarantee that the quality of ammoniacal liquor meets the requirement of sintering desulfuration, finally the ammoniacal liquor of quality standard is reclaimed, produce ammonium sulfate or carry out sintering desulfuration, like this when producing strong aqua with useless ammonia, guarantee the production stability of coking original system, and produce the strong aqua that meets sintering desulfuration specification of quality.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to example, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a method that reclaims useless ammonia in coking arsenic flow process, is characterized in that, comprises the following steps: step 1, the useless ammonia at fixed ammonia tower (13) top is drawn; Step 2, the pressure of adjusting fixed ammonia top of tower, guaranteeing, when reclaiming useless ammonia, does not affect the normal operation of ammonia tower; Step 3, separates liquid and the solid in useless ammonia, carried secretly, guarantees the purity of ammoniacal liquor; Step 4, regulates ammonia concn, makes ammonia concn in the needed concentration range of sintering desulfuration; Step 5, is cooled to the applicable temperature that stores and carry by ammonia condensation, is then delivered to strong aqua storage tank (5); Step 6, is reclaimed the ammonia that diffuses at strong aqua storage tank (5) top; Step 7, filters out a small amount of oily substance containing in ammoniacal liquor, guarantees that the quality of ammoniacal liquor meets the requirement of sintering desulfuration; Step 8, reclaims, produces ammonium sulfate or carry out sintering desulfuration the ammoniacal liquor of requisite quality.
2. the method for useless ammonia in recovery coking arsenic flow process according to claim 1, it is characterized in that, described step 2 comprises: useless ammonia is by after tower top pressure setter (1) voltage stabilizing, make fixed ammonia top of tower pressure-stabilisation in a rational scope, to guarantee the normal running of fixed ammonia tower.
3. the method for useless ammonia in recovery coking arsenic flow process according to claim 1, is characterized in that, described step 3 comprises: useless ammonia enters gas, liquid, solid separator (2) and isolates contained liquid and solid dregs.
4. the method for useless ammonia in recovery coking arsenic flow process according to claim 1, it is characterized in that, described step 4 comprises: useless ammonia enters ammonia concn setter (3), water spray pre-cooled in, the concentration of ammonia is adjusted to suitable scope.
5. the method for useless ammonia in recovery coking arsenic flow process according to claim 1, it is characterized in that, described step 5 comprises: useless ammonia enters condensate cooler (4) and carries out condensing cooling, being used for the recirculated water of self-circulating water cooling tower (11) and water circulating pump (12) carries out tentatively coolingly, then uses the water at low temperature in low temperature water tank (14) that ammonia condensation is cooled to below 25 ℃.
6. the method for the useless ammonia in recovery coking arsenic flow process according to claim 1, it is characterized in that, described step 6 comprises: the ammonia that diffuses at strong aqua storage tank (5) top enters ammonia collector (6) and reclaimed, or the gas line before access gas blower.
7. the method for useless ammonia in recovery coking arsenic flow process according to claim 1, it is characterized in that, described step 7 comprises: the strong aqua in strong aqua storage tank (5) is delivered to and in oil strainer (8), filtered out contained a small amount of oily substance by strong aqua pump (7).
8. the method for useless ammonia in recovery coking arsenic flow process according to claim 1, it is characterized in that, described step 8 comprises: strong aqua is used for to sintering desulfuration, delivers to sulphur ammonium saturex (10) production ammonium sulfate fertilizer or pack strong aqua tank car (9) into.
9. reclaim a device for useless ammonia in coking arsenic flow process, the useless ammonia producing for reclaiming fixed ammonia tower (13); It is characterized in that, described useless ammonia device comprises: manostat (1), gas-liquid-solid separator (2), ammonia concn setter (3), condensate cooler (4), strong aqua storage tank (5), diffuse ammonia collector (6), low temperature water tank (14), strong aqua pump (7), oil strainer (8), circulating water cooling tower (11), water circulating pump (12) and recovering mechanism; Described manostat (1) is arranged on the top of described fixed ammonia tower (13), and the useless ammonia of drawing is carried out to pressure adjusting; Described gas-liquid-solid separator (2) is connected with described manostat (1), for separating of the liquid and the solid dregs that contain in the ammonia that goes out to give up; Described ammonia concn setter (3) is connected with described gas-liquid-solid separator (2), for the concentration of ammonia being adjusted to suitable scope and being carried out pre-cooled to ammonia; Described condensate cooler (4) is connected with described ammonia concn setter (3), for ammonia is carried out to condensing cooling; Described recirculated water cooling tower (11) is connected with described condensate cooler (4) by described water circulating pump (12), tentatively cooling for described ammonia is carried out; Described low temperature water tank (14) is connected with described condensate cooler (4), by the water at low temperature in described low temperature water tank (14), ammonia condensation is cooled to below 25 ℃; Described strong aqua storage tank (5) is connected with described condensate cooler (4), for receiving the strong aqua after condensing cooling; Describedly diffuse the top that ammonia collector (6) is arranged on described strong aqua storage tank (5), for collecting the ammonia at strong aqua storage tank (5) top; Described oil strainer (8) is connected with described strong aqua storage tank (5) by described strong aqua pump (7), for filtering the oily substance of ammoniacal liquor; Described recovering mechanism is connected with described oil strainer (8), for receiving standard compliant ammoniacal liquor.
10. the device of useless ammonia in recovery coking arsenic flow process according to claim 9, is characterized in that: described recovering mechanism comprises strong aqua tank car (9) and sulphur ammonium saturex (10); Described strong aqua tank car (9) and sulphur ammonium saturex (10) are connected with described oil strainer (8) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268863.7A CN104003419B (en) | 2014-06-16 | 2014-06-16 | A kind of device and method reclaiming the ammonia that gives up in coking arsenic flow process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268863.7A CN104003419B (en) | 2014-06-16 | 2014-06-16 | A kind of device and method reclaiming the ammonia that gives up in coking arsenic flow process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104003419A true CN104003419A (en) | 2014-08-27 |
| CN104003419B CN104003419B (en) | 2016-08-24 |
Family
ID=51364364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410268863.7A Active CN104003419B (en) | 2014-06-16 | 2014-06-16 | A kind of device and method reclaiming the ammonia that gives up in coking arsenic flow process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104003419B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506735A (en) * | 2018-06-07 | 2018-09-07 | 上海梅山工业民用工程设计研究院有限公司 | A kind of coking waste gas recovery governing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4559210A (en) * | 1983-02-25 | 1985-12-17 | Krupp Koppers Gmbh | Multi-stage method for washing-out ammonia from gas, particularly coking oven gas |
| CN101289234A (en) * | 2008-06-16 | 2008-10-22 | 南昌大学 | A method for treating phenolic and ammonia-containing coal chemical wastewater by double-tower stripping |
| CN203295210U (en) * | 2013-02-07 | 2013-11-20 | 上海兄弟微电子技术有限公司 | Ammonia gas recovering system |
-
2014
- 2014-06-16 CN CN201410268863.7A patent/CN104003419B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4559210A (en) * | 1983-02-25 | 1985-12-17 | Krupp Koppers Gmbh | Multi-stage method for washing-out ammonia from gas, particularly coking oven gas |
| CN101289234A (en) * | 2008-06-16 | 2008-10-22 | 南昌大学 | A method for treating phenolic and ammonia-containing coal chemical wastewater by double-tower stripping |
| CN203295210U (en) * | 2013-02-07 | 2013-11-20 | 上海兄弟微电子技术有限公司 | Ammonia gas recovering system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506735A (en) * | 2018-06-07 | 2018-09-07 | 上海梅山工业民用工程设计研究院有限公司 | A kind of coking waste gas recovery governing system |
| CN108506735B (en) * | 2018-06-07 | 2023-06-27 | 上海梅山工业民用工程设计研究院有限公司 | Coking waste gas recovery and treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104003419B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104743728A (en) | Energy-saving type deaminizing method for realizing negative pressure deamination by coking surplus ammonia water | |
| CN204815724U (en) | Device is optimized to transform technology condensate strip | |
| CN104843813A (en) | Coal gasification high ammonia nitrogen wastewater treatment process | |
| CN109569193B (en) | Desulfurization method with synchronous absorption and regeneration | |
| CN209368043U (en) | Coking desulfurization waste liquor salt extraction device | |
| US11148095B2 (en) | Reclaiming apparatus and method for reclaiming | |
| CN104986740A (en) | Claus tail gas treatment system and treatment method | |
| CN108821308B (en) | Method and device for preparing high-concentration ammonia water by using coking residual ammonia water | |
| CN203060883U (en) | Waste gas recovery system for producing carbon disulfide | |
| CN204874343U (en) | Marsh gas and coke oven gas joint production methyl alcohol device | |
| CN107823906B (en) | crude gas conversion process condensate steam stripping treatment system and method | |
| CN104006629A (en) | Method and device for recycling carbon disulfide from hydrogen sulfide tail gas during preparation of carbon disulfide | |
| CN205381962U (en) | Molten sulfur degasification system | |
| CN203728571U (en) | Device for recovering hydrogen and ammonia in purge gas of synthesis ammonia | |
| CN102086038A (en) | Tube furnace ammonia distilling process | |
| CN104003419A (en) | Device and method for recycling waste ammonia gas in arsenic coking process | |
| CN205710634U (en) | A kind of decarbonization desulfurization system of synthetic natural gas | |
| CN104056462A (en) | Heat pump distillation energy-saving device | |
| CN102876828B (en) | Reducing gas purification process and system matched with gas-based shaft furnace | |
| CN204125164U (en) | A kind of oil shale distillation chemistry chain hydrogen manufacturing combined generating system | |
| CN102172436A (en) | NHD (polyethylene glycol dimethyl ether) desulfurization and decarburization condensate recovery method and system | |
| CN105296748A (en) | Harmless disposal method of distilled ammonia waste water | |
| CN103789011B (en) | A kind of wax hydrofining post-treating method | |
| CN106395756B (en) | It is a kind of to handle containing ammonia, carbonyl sulfur, hydrogen sulfide sour gas, and carry out the novel process of sulphur recovery | |
| CN213865802U (en) | Raw coke oven gas washing effluent disposal system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170607 Address after: 430080 No. 99, steel road, workers Village Road, Qingshan District, Hubei, Wuhan Patentee after: Wuhan Huade Ecotek Corporation Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right |