CN211004576U - Device system for preparing nitric acid by thermal decomposition of metal nitrate - Google Patents
Device system for preparing nitric acid by thermal decomposition of metal nitrate Download PDFInfo
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- CN211004576U CN211004576U CN201921626702.5U CN201921626702U CN211004576U CN 211004576 U CN211004576 U CN 211004576U CN 201921626702 U CN201921626702 U CN 201921626702U CN 211004576 U CN211004576 U CN 211004576U
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Abstract
The utility model relates to a device system for preparing nitric acid by thermal decomposition of metal nitrate, which comprises a raw material tank, a pyrolysis furnace, a cyclone separator, a heat accumulating type heater, an absorption tower and a nitric acid recovery tank; the raw material tank is connected to the top end of the pyrolysis furnace; the middle part of the raw material tank is connected to the cyclone separator; the top end of the cyclone separator is connected to the bottom end of the heat accumulating type heater; the top end of the cyclone separator is connected to the top end of the absorption tower. The heat accumulating type heater is respectively connected with the pyrolysis furnace and the raw material tank; the storage heater is used for heating part of the decomposed gas and the raw material tank. All the parts are sealing structural parts. The mixed gas generated by decomposing the nitrate is used as a heat source in the whole nitrate thermal decomposition recovery process, and finally the oxynitride gas can be completely absorbed to prepare the nitric acid, so that the whole metal nitrate cyclic decomposition reaction process is energy-saving and environment-friendly, and the efficiency of generating the nitric acid is higher.
Description
Technical Field
The utility model relates to an industrial waste treatment technical field, especially a device system that is used for metal nitrate thermal decomposition to prepare nitric acid.
Background
In nature, the nitrate is mainly formed by nitrogen fixation of nitrogen-fixing bacteria, or nitrogen and oxygen in the air are directly synthesized into nitrogen oxide under the high temperature of lightning, the nitrogen oxide is dissolved in rainwater to form nitric acid, and the nitric acid reacts with ground minerals to generate the nitrate, the nitrate is mainly used for nitrogen fertilizer absorbed by plants, nitrogen elements are not only main components of amino acid and protein, but also can be synthesized into chlorophyll to promote photosynthesis, so that leaves are withered and yellow if the plants are lack of nitrogen. Sodium nitrate and calcium nitrate are good nitrogen fertilizers. Potassium nitrate is the raw material for making black powder. Ammonium nitrate can be used as fertilizer or explosive.
However, nitrate produced in industry is easy to be directly taken by human body when entering the environment, although nitrate is harmless to human body, nitrite is easy to be reduced into nitrite in human body, when nitrite is absorbed by blood in large quantity, its oxygen carrying capacity can be inhibited, so that normal oxygen supply of tissue is affected, and in addition, nitrite is easy to react in human body to produce nitrosamine with carcinogenicity. The sources of nitrates in industrial production need to be discussed respectively according to production processes of different industries, and there are direct production and indirect production, for example, industries such as machinery, chemical industry, electroplating, photovoltaic and the like often use a large amount of nitric acid or nitrates as raw materials or auxiliary agents, so that the waste water directly contains nitrates with higher concentration, and industries such as food, leather, paper making, chemical fertilizer and the like indirectly cause nitrate pollution by decomposing the waste water by using a large amount of nitrogen-containing organic matters. In fact, most industrial processes involve the contamination of nitrogen, and by artificial or natural transformation, these various forms of nitrogenous substances are eventually transformed into nitrate nitrogen, which is the pain point in the treatment of such waste waters.
The nitrate of alkali metal and alkali earth metal is thermally decomposed to produce nitrite and oxygen, most of the rest metal nitrate can be decomposed to release oxygen, nitrogen dioxide and metal oxide when heated, and the released oxygen and nitrogen dioxide can be absorbed by water under a certain condition to produce nitric acid. The characteristics of good solubility of metal nitrate, easy decomposition of nitrate and easy regeneration of decomposed nitrogen oxide gas into nitric acid can be utilized to realize the cyclic regeneration and utilization in the fields of non-ferrous metal hydrometallurgy and other chemical industries, thereby realizing the production process with low cost.
The existing production process of decomposing nitrate to release nitric oxide and absorbing nitric oxide water into nitric acid mainly utilizes a mode of directly pyrolyzing nitrate in a decomposing furnace or a rotary kiln by using combustion gas, a heat source is natural gas, coal gas, oil and the like, decomposed nitric oxide gas directly enters an absorption tower, so that the combustion gas and the nitric oxide are mixed together, mixed gas from the decomposing furnace is high-temperature gas (400-; meanwhile, after a large amount of combustion gas is mixed with decomposed oxynitride gas, the concentration of the absorbed gas oxynitride is greatly reduced, so that the concentration of the produced nitric acid is lower. Therefore, a safe, efficient, energy-saving and environment-friendly nitrate decomposition and recycling process method and a preparation device thereof are needed.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: aiming at the technical problems that in the prior art, nitrate is directly pyrolyzed in a decomposing furnace or a rotary kiln by using combustion gas in the process of preparing nitric acid by thermal decomposition of nitrate, so that the final high-temperature combustion gas is directly discharged, heat cannot be fully utilized, resources are wasted, and the concentration efficiency of the generated nitric acid is low due to the mixing of the combustion gas and the decomposition gas;
the device system for preparing the nitric acid by the thermal decomposition of the metal nitrate is provided, so that the whole process of the thermal decomposition and recovery process of the nitrate is energy-saving and environment-friendly, and the efficiency of producing the nitric acid is higher.
In order to realize the purpose, the utility model discloses a technical scheme be:
a device system for preparing nitric acid by thermal decomposition of metal nitrate comprises a raw material tank, a pyrolysis furnace, a cyclone separator, a heat accumulating type heater, an absorption tower and a nitric acid recovery tank;
a jacket layer is arranged outside the raw material tank; the material outlet of the raw material tank is connected to the top feed inlet of the pyrolysis furnace;
a middle air outlet of the pyrolysis furnace is connected to a side air inlet of the cyclone separator;
an exhaust port at the top end of the cyclone separator is connected to an air inlet at the bottom end of the heat accumulating type heater and an air inlet at the top of the absorption tower through a three-way pipe;
an air outlet at the top of the heat accumulating type heater is connected to an air inlet at the top end of the pyrolysis furnace;
the pyrolysis furnace is used for decomposing metal nitrate;
the cyclone separator is used for separating gas and dust generated by decomposition of the metal nitrate;
the heat accumulating type heater is used for heating the decomposed gas output from the top of the cyclone separator; meanwhile, a combustion flue gas outlet of the heat accumulating type heater is connected to a jacket layer of the raw material tank and used for heating metal nitrate in the raw material tank by using waste heat of combustion flue gas, an exhaust valve used for exhausting flue gas is arranged in the jacket layer and can be kept closed or opened according to actual needs during working, the exhaust valve is kept closed during working when the flue gas pressure in the jacket layer is smaller than a certain set threshold value, and the exhaust valve is kept opened when the flue gas pressure is larger than the certain set threshold value so as to avoid the influence on normal operation caused by too large system pressure of the whole device.
The absorption tower is used for absorbing the decomposed gas output from the top of the cyclone separator by using water and reacting to generate nitric acid; the components of the device system are interconnected by pipes and form a sealed structure.
The utility model provides a device system for metal nitrate thermal decomposition preparation nitric acid, metal nitrate hot-fluid among the head tank gets into the pyrolysis oven, the oxynitride gas that the thermal decomposition produced is partly through cyclone purification back partly through the heat accumulation formula heater heating as the high temperature gas heat source of metal nitrate decomposition on next step, another part gas can send to the absorption tower in with water reaction preparation become nitric acid solution, the burning flue gas waste heat of heat accumulation formula heater can be used for heating the head tank simultaneously for metal nitrate hot fluidization. This device makes other combustion gas need not be introduced in whole nitrate thermal decomposition recovery process, but utilizes the oxynitrides gas that nitrate decomposition self produced as the heat source, cyclic utilization to finally can prepare into nitric acid with the gaseous complete absorption of oxynitrides, the nitric acid concentration reaches output storage utilization behind the required concentration range of production, then make up water as the absorption liquid, need not discharge gas, make whole metal nitrate cyclic utilization process energy-conserving, the environmental protection and produce the efficiency of nitric acid higher.
As a preferable embodiment of the present invention, the metal nitrate is one or more of magnesium nitrate, aluminum nitrate, zinc nitrate, iron nitrate, tin nitrate, lead nitrate, and copper nitrate.
As the utility model discloses a preferred scheme, be provided with the pump between pyrolysis oven and the head tank, the pump is used for sending the liquid metal nitrate pump in the head tank to the pyrolysis oven.
As the preferred scheme of the utility model, the top feed inlet of the pyrolysis furnace is provided with an atomizer. The atomizer is used for atomizing the metal nitrate solution conveyed by the raw material tank into micro liquid, so that the metal nitrate in the pyrolysis furnace is fully contacted with a high-temperature mixed gas heat source, and a good nitrate decomposition effect is realized.
As the preferred scheme of the utility model, the positive pressure is kept in the pyrolysis furnace.
As the preferred scheme of the utility model, the bottom of pyrolysis furnace is provided with first slagging tap for the discharge of the solid powder that produces when with metal nitrate thermal decomposition.
The device further comprises a material bin, wherein the material bin is arranged below the first slag discharge port and used for receiving and storing metal oxide solid powder.
Further, still include screw propeller, screw propeller is connected to first row cinder notch, the solid powder of accumulation passes through screw propeller screw propulsion to material storehouse, and the solid powder of accumulation and discharged solid powder in the pyrolysis oven reach a dynamic balance simultaneously, not only can discharge the solid powder of accumulation, and the solid powder of accumulation in the pyrolysis oven bottom also can play a inclosed effect simultaneously, and the gas that decomposes metal nitrate in the pyrolysis oven and produce can not run out from row cinder notch.
As the preferable proposal of the utility model, the bottom of the cyclone separator is provided with a second slag discharge hole, and the solid dust separated in the cyclone separator is discharged from the second slag discharge hole.
Further, the second slag discharge port is connected to the screw propeller.
Furthermore, cyclone is close to top gas vent position and is provided with the sack cleaner, and the decomposition mist that comes from the pyrolysis oven separates through cyclone and purifies the back with the dust, decomposes the further dust removal purification of sack cleaner through the mist before the mist goes out from cyclone top gas vent for the mist is cleaner.
Furthermore, a fan is arranged on a pipeline outside an exhaust port at the top end of the cyclone separator and used for introducing clean decomposed gas treated by the cyclone separator into the three-way pipe and shunting the decomposed gas to the heat accumulating type heater and the absorption tower.
As the utility model discloses a preferred scheme, the heat accumulation formula heater includes two at least heat accumulators that connect in parallel, each the both ends of heat accumulator all are provided with the valve, make heat accumulator alternate use through control flap's switch, only use a heat accumulator at every turn.
During the use, at first, close the mist valve at first heat accumulator both ends, the natural gas from the top heats first heat accumulator, and heat energy is stored in the first heat accumulator in the stove, and high temperature flue gas waste heat gets into the cover of pressing from both sides of head tank through the pipeline in the first heat accumulator and heats the head tank for the magnesium nitrate material of head tank is heated the melting and is the hot-fluid.
And then stopping heating the natural gas of the first heat accumulator, opening valves at two ends of the first heat accumulator, and then heating and heating the circulating gas to enter the pyrolysis furnace from bottom to top through the heat accumulator by using a part of mixed decomposition gas purified by the cyclone separator.
Then, the natural gas heating of the second heat storage body is performed in the same manner as the first heat storage body described above.
The circulation is carried out, so that a plurality of heat accumulators are alternately carried out, and the long-term continuous operation of the generation process can be ensured.
As the utility model discloses an optimal scheme, the three-way pipe is provided with the valve for control cyclone top exhaust hole exhaust mist's flow direction and reposition of redundant personnel, partly mist gets into the heat accumulation formula heater and heats up, and the mist of the high temperature nitrogen oxide that obtains through heating and heating, oxygen comes as the heat source in the pyrolysis oven, and another part mist gets into in the absorption tower and is absorbed by water and prepare nitric acid.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model provides a device system for metal nitrate pyrolysis preparation nitric acid, make whole nitrate thermal decomposition retrieve the technological process in need not introduce other combustion gas, but utilize the oxynitrides gas that nitrate decomposition self produced as the heat source, cyclic utilization, and finally can prepare into the nitric acid of higher concentration with the gaseous whole absorption of oxynitrides, the nitric acid concentration reaches output storage utilization behind the required concentration range of production, then make up water as the absorption liquid, need not exhaust gas, also there is not the waste liquid to discharge, make whole metal nitrate cyclic utilization process energy-conserving, the environmental protection just produces the efficiency of nitric acid higher.
2. The utility model discloses a heat accumulation formula heater not only can heat the decomposition gas, can also utilize the flue gas waste heat to heat the head tank, has played the effect of heater and heat exchanger simultaneously, and fuel consumption reduces by a wide margin when heat accumulation formula heater heating quality improves greatly moreover, has reached good energy-conserving effect.
3. The utility model discloses pyrolysis furnace roof end is provided with the atomizer, can change the metal nitrate hot-fluid that the head tank carried into small liquid, produces good contact with high temperature mist for metal nitrate decomposes more fully.
Drawings
Fig. 1 is a schematic structural diagram of the device for preparing nitric acid by thermal decomposition of metal nitrate according to the present invention.
The labels in the figure are: 1-a raw material tank, 2-a pump, 3-a heat accumulating type heater, 4-a pyrolysis furnace, 5-a spiral propeller, 6-a cyclone separator, 7-an absorption tower, 8-a nitric acid recovery tank and 9-a material bin.
Detailed Description
The present invention will be described in detail with reference to fig. 1.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, an apparatus system for preparing nitric acid by thermal decomposition of metal nitrate comprises a raw material tank 1, a pyrolysis furnace 4, a cyclone separator 6, a heat accumulating type heater 3, an absorption tower 7 and a nitric acid recovery tank 8.
The raw material tank 1 is a raw material tank with a jacket layer; the material outlet of the raw material tank 1 is connected to the top end feeding hole of the pyrolysis furnace 4. The middle air outlet of the pyrolysis furnace 4 is connected to the side air inlet of the cyclone separator 6; and an exhaust port at the top end of the cyclone separator 6 is connected to an air inlet at the bottom end of the heat accumulating type heater 3 and an air inlet at the top of the absorption tower 7 through a three-way pipe. And an air outlet at the top of the heat accumulating heater 3 is connected to an air inlet at the top end of the pyrolysis furnace (4).
The pyrolysis furnace 4 is used for decomposing metal nitrate; the cyclone separator 6 is used for separating gas and dust generated by the decomposition of nitrate; the heat accumulating type heater 3 is used for heating the decomposed gas output from the top of the cyclone separator 6, and meanwhile, a combustion flue gas outlet of the heat accumulating type heater 3 is connected to the jacket layer of the raw material tank 1 and used for heating the metal nitrate in the raw material tank 1; the absorption tower is used for absorbing the decomposed gas output from the top of the cyclone separator 6 by water and reacting to generate nitric acid; all the parts are communicated with each other through pipelines, and a sealed structural part is formed.
Wherein the metal nitrate is one or more of magnesium nitrate, aluminum nitrate, zinc nitrate, ferric nitrate, tin nitrate, lead nitrate and copper nitrate.
In this example, magnesium nitrate was used as the metal nitrate.
The technological process for preparing nitric acid by utilizing the device system to carry out thermal decomposition on metal nitrate comprises the following steps:
firstly, a magnesium nitrate material in a raw material tank 1 is heated and melted by smoke waste heat in a jacket, the melted magnesium nitrate is pumped into a pyrolysis furnace 4, decomposition reaction is carried out by using high-temperature gas as a heat source under the dispersion action of an atomizer at the top of the pyrolysis furnace 4 to generate mixed gas of magnesium oxide solid powder, nitrogen dioxide and oxygen, the magnesium oxide solid powder is deposited at the bottom of the pyrolysis furnace 4, and the mixed gas is spirally pushed into a material bin from a first discharge port of the pyrolysis furnace 4 through a spiral propeller 5.
Then, the mixed gas of nitrogen dioxide and oxygen carries part of magnesium oxide solid powder to enter a cyclone separator 6 from an exhaust port in the middle of the pyrolysis furnace 4, the cyclone separator 6 performs primary separation on the nitrogen dioxide and oxygen from the magnesium oxide solid powder, and the magnesium oxide solid powder falls into a second slag discharge port at the bottom of the cyclone separator 6. Then, the mixed decomposed gas passes through a bag-type dust collector near the top exhaust port via a cyclone separator 6, and is further separated, purified and dedusted. Magnesium oxide solid powder accumulated at a second slag discharge port at the bottom of the cyclone separator 6 is spirally pushed into a material bin 9 through a spiral propeller 5 connected with a second discharge port.
And then, introducing clean mixed decomposition gas into the three-way pipe through a fan, introducing part of the mixed gas into the heat storage heater 3 for heating and temperature rise, and taking the mixed gas of high-temperature nitrogen oxide and oxygen obtained through heating and temperature rise as a heat source for decomposing the nitrate hot fluid from the raw material tank 1 in the pyrolysis furnace 4. The other part of the mixed gas enters an absorption tower 7 to be absorbed by water to prepare nitric acid, the nitric acid is output, stored and utilized after the concentration of the nitric acid reaches the concentration range required by production, and then water is supplemented to be used as absorption liquid.
The heat accumulating type heater 3 can be heated by natural gas, coal gas or oil, natural gas is selected for heating in the embodiment, positive pressure is kept in the pyrolysis furnace, the furnace body is made of high-temperature-resistant and corrosion-resistant materials, and the sealing effect is good.
Wherein the heat accumulating heater 3 is provided with a first heat accumulator, a second heat accumulator and a third heat accumulator. Valves are arranged at two ends of each heat accumulator, the three heat accumulators are used alternately, and only one heat accumulator is used each time.
At first, close the mist valve at first heat accumulator both ends, the first heat accumulator of natural gas from the top down heating, heat energy is stored in the first heat accumulator in the stove, and high temperature flue gas waste heat heats head tank 1 in the clamp cover that the pipeline got into head tank 1 in the first heat accumulator for the magnesium nitrate material of head tank 1 is heated the melting and is the hot-fluid.
Then, stopping the natural gas heating of the first heat accumulator, opening valves at two ends of the first heat accumulator, and then heating and heating a part of the circulating gas from bottom to top through the heat accumulator after the part of the mixed decomposition gas is purified by the cyclone separator 6 and enters the pyrolysis furnace.
Then, the natural gas heating of the second heat storage body is performed in the same manner as the first heat storage body described above.
The circulation is carried out, so that the three heat accumulators are alternately carried out, and the long-term continuous operation of the generation process can be ensured.
The whole thermal decomposition reaction process does not introduce other fuel gas, but utilizes oxynitride gas generated by decomposing nitrate as a heat source, and finally, the oxynitride gas can be completely absorbed to prepare nitric acid. And the natural gas flue gas tail gas used for heating the heat accumulator is guided into the jacket layer of the nitrate storage tank, and the nitrate is preheated to be liquefied, so that the pumping is convenient, and the heating power requirement of the pyrolysis furnace is reduced. The utility model discloses the device system for whole metal nitrate cyclic utilization process is energy-conserving, the environmental protection and produce the efficiency of nitric acid higher.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A device system for preparing nitric acid by thermal decomposition of metal nitrate is characterized by comprising a raw material tank (1), a pyrolysis furnace (4), a cyclone separator (6), a heat accumulating type heater (3), an absorption tower (7) and a nitric acid recovery tank (8);
a jacket layer is arranged outside the raw material tank (1); the material outlet of the raw material tank (1) is connected to the top feed inlet of the pyrolysis furnace (4); a middle air outlet of the pyrolysis furnace (4) is connected to a side air inlet of the cyclone separator (6); an exhaust port at the top end of the cyclone separator (6) is connected to an air inlet at the bottom end of the heat accumulating type heater (3) and an air inlet at the top of the absorption tower (7) through a three-way pipe; an air outlet at the top of the heat accumulating type heater (3) is connected to an air inlet at the top end of the pyrolysis furnace (4);
the pyrolysis furnace (4) is used for decomposing metal nitrate; the cyclone separator (6) is used for separating gas and dust generated by decomposition of the metal nitrate; the heat accumulating type heater (3) is used for heating the decomposed gas output from the top of the cyclone separator (6); meanwhile, a combustion flue gas outlet of the heat accumulating type heater (3) is connected to a jacket layer of the raw material tank (1) and used for heating the metal nitrate in the raw material tank (1); the absorption tower is used for absorbing the decomposed gas output from the top of the cyclone separator (6) by water and reacting to generate nitric acid; the components of the device system are interconnected by pipes and form a sealed structure.
2. The apparatus system for the thermal decomposition of a metal nitrate to produce nitric acid of claim 1, wherein a pump is disposed between the pyrolysis furnace and the feed tank.
3. The plant system for the thermal decomposition production of nitric acid from metal nitrates according to claim 1, characterized in that the bottom of the pyrolysis furnace (4) is provided with a first slag discharge for discharging solid powder produced upon thermal decomposition of metal nitrates.
4. The device system for preparing nitric acid through thermal decomposition of metal nitrate according to claim 3, further comprising a material bin (9) disposed below the first deslagging port for receiving and storing solid metal oxide powder.
5. The device system for preparing nitric acid through thermal decomposition of metal nitrate according to claim 3, characterized by further comprising an auger (5), wherein the auger (5) is connected to the first slag discharge port, and the auger (5) is used for auger propelling the first slag discharge port discharge metal oxide to a material bin (9).
6. The plant system for the thermal decomposition of metal nitrates for the production of nitric acid according to claim 1, characterized in that the top feed inlet of the pyrolysis furnace (4) is provided with an atomizer.
7. The device system for preparing nitric acid through thermal decomposition of metal nitrate according to claim 1, wherein a bag-type dust collector is arranged at a position, close to the top end exhaust hole, of the cyclone separator (6) and is used for further separating and purifying decomposed gas.
8. The device system for preparing nitric acid through thermal decomposition of metal nitrate according to claim 5, characterized in that a second slag discharge port is arranged at the bottom of the cyclone separator (6) and connected to the screw propeller (5).
9. The plant system for the thermal decomposition of metal nitrates for the production of nitric acid according to any one of claims 1 to 8, characterized in that the storage heater (3) comprises at least two heat accumulators connected in parallel.
10. The apparatus system of claim 9, wherein valves are provided at both ends of each of the heat accumulators for controlling the alternate use of the heat accumulators by opening and closing the valves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921626702.5U CN211004576U (en) | 2019-09-27 | 2019-09-27 | Device system for preparing nitric acid by thermal decomposition of metal nitrate |
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| CN201921626702.5U CN211004576U (en) | 2019-09-27 | 2019-09-27 | Device system for preparing nitric acid by thermal decomposition of metal nitrate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777087A (en) * | 2020-08-04 | 2020-10-16 | 眉山顺应动力电池材料有限公司 | System and method for producing alumina from coal gangue |
| CN112359366A (en) * | 2020-10-10 | 2021-02-12 | 东南大学 | Two-stage roasting regeneration device and method for waste mixed acid |
-
2019
- 2019-09-27 CN CN201921626702.5U patent/CN211004576U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777087A (en) * | 2020-08-04 | 2020-10-16 | 眉山顺应动力电池材料有限公司 | System and method for producing alumina from coal gangue |
| CN112359366A (en) * | 2020-10-10 | 2021-02-12 | 东南大学 | Two-stage roasting regeneration device and method for waste mixed acid |
| CN112359366B (en) * | 2020-10-10 | 2021-11-23 | 东南大学 | Two-stage roasting regeneration device and method for waste mixed acid |
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Inventor after: Wang Chengyan Inventor after: But brave Inventor after: Zhao Lin Inventor after: Ma Baozhong Inventor after: Zhao Peng Inventor after: Gao Bo Inventor after: Chen Yongqiang Inventor after: Jin Changhao Inventor before: But brave Inventor before: Zhao Lin Inventor before: Gao Bo Inventor before: Zhao Peng Inventor before: Jin Changhao |
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Address after: 620020 No.1 Jinhua Road, Meishan high tech Industrial Park, Dongpo District, Meishan City, Sichuan Province Patentee after: Sichuan compliance power battery materials Co.,Ltd. Address before: 620020 Meishan Jinxiang Chemical Industrial Park, Meishan City, Sichuan Province Patentee before: MEISHAN SHUNYING POWER BATTERY MATERIAL Co.,Ltd. |