CN211688262U - Rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle - Google Patents
Rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle Download PDFInfo
- Publication number
- CN211688262U CN211688262U CN202020082178.6U CN202020082178U CN211688262U CN 211688262 U CN211688262 U CN 211688262U CN 202020082178 U CN202020082178 U CN 202020082178U CN 211688262 U CN211688262 U CN 211688262U
- Authority
- CN
- China
- Prior art keywords
- communicated
- cooling chamber
- insoluble sulfur
- cooling
- outlet end
- 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.)
- Active
Links
Images
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model discloses a rotary kiln formula closed cycle preparation insolubility sulphur's spray reaction device relates to rubber tire, rubber product and uses the preparation equipment technical field of insolubility sulphur, and the primary structure includes melting system, charge-in system, high temperature reaction stove, cooling chamber, piece-rate system, gas analysis system, cooling system, pressure balance system and discharge system. The inert gas can effectively reduce the oxidation of the sulfur and improve the product quality. The quenching section process effectively restrains the reverse reaction, thereby directly influencing the content of insoluble sulfur in the product. The insoluble sulfur is obtained by adopting a low-temperature melting reaction method, the process is environment-friendly, and the spray reaction equipment can play a role in saving resources and reducing cost, and has good market prospect.
Description
Technical Field
The utility model relates to a rubber tire, rubber products are with preparation equipment technical field of insoluble sulfur, especially relate to a rotary kiln formula closed cycle preparation insoluble sulfur's spray reaction device.
Background
The spray reaction equipment is an advanced novel high-efficiency process equipment, and is characterized in that an atomizer is utilized to atomize solution, emulsion, pasty liquid and suspension liquid materials, micronized fog drops have extremely large surface area, and the materials are promoted to carry out drying, decomposition or cracking reaction under a certain high-temperature atmosphere condition to produce required powdery products or generate brand new materials. The lithium iron phosphate is widely applied to liquids, suspensions and viscous fluids in the fields of petrochemical industry, aviation industry and military industry at present, such as superconducting materials, lithium iron phosphate, graphite, propellants, negative electrode materials, petroleum catalysts, medicines and the like; can also be used for lithium battery materials, intermediates and inorganic salt products, and is ideal process equipment in the industries of chemical engineering, new energy, advanced materials and the like.
With the rapid development of the automobile industry in China, the annual output of tires is increased year by year, and the demand of sulfur as a main vulcanizing agent of rubber is increased year by year.
However, the solubility of ordinary sulfur in rubber is limited, and the solubility of the ordinary sulfur increases with the increase of temperature in the rubber mixing process, and precipitates in a crystalline form on the surface of the rubber compound when the temperature is reduced, so that the ordinary sulfur migrates to the surface of the rubber compound, namely, the phenomenon of so-called 'blooming' in the production of tires and rubber products is formed, the appearance of the products is seriously influenced, and the adhesiveness of the products is reduced.
In order to solve the problems of common sulfur blooming and the like, Insoluble Sulfur (IS) products are produced at the same time, and the Insoluble Sulfur (IS) IS a linear long-chain high-molecular polymer for deeply processing sulfur (S), wherein the number of sulfur atoms on a molecular chain IS up to more than 108; insoluble in carbon disulfide, it is called insoluble sulfur. The IS IS the best rubber vulcanizing agent with the recognized characteristic of no blooming, and has the following advantages: the rubber material has good self-adhesion. Can improve the bonding strength between each layer of the multi-layer rubber product, and particularly can improve the bonding performance of steel wires and rubber in the process of manufacturing tires. Insoluble sulfur is uniformly distributed in the rubber material, so that the scorching phenomenon of the rubber material during storage is effectively reduced, the storage period of the rubber material is prolonged, the uniform vulcanization is ensured, and the quality of rubber products is improved. And thirdly, because the rubber is insoluble in rubber, the rubber does not migrate to the surface of the sizing material to generate blooming, and the appearance quality of the light-colored product is ensured. In the production of automobile all-steel wire radial tires, insoluble sulfur is the best rubber vulcanizing agent and accelerator, and no substitute product exists at present.
For technical reasons, insoluble sulfur products produced by domestic enterprises have the problems of low purity, high ash content, poor heat resistance and the like, and the difference is still larger compared with products of companies such as Flexsys and the like abroad.
Although the insoluble sulfur has outstanding performance, the technology for producing the insoluble sulfur at home and abroad has the problems of high production cost, high energy consumption, serious equipment corrosion, easy accident generation due to high pressure, instability in the storage process of the insoluble sulfur, easy conversion into common sulfur and the like. Therefore, in recent years, development of new environmentally-friendly and safe insoluble sulfur production processes is also sought, but at present, most of the new processes are still in the laboratory stage, and industrialization is not realized.
The key technology of gasification or melting is the selection of stabilizer, the determination of quench liquid and quench mode. However, most manufacturers and some Chinese patents in China adopt a method of using water as quenching liquid, and some Chinese patents also adopt a method of matching carbon disulfide and a composite stabilizer in different proportions. The insoluble sulfur produced by using water as a quenching liquid has poor dispersibility, high-temperature thermal stability cannot meet the requirements of radial tires, the amount of wastewater in the production process is large, and the environmental protection problem is prominent, and Chinese patent 01101968.9 specially provides a production method of melting anhydrous insoluble sulfur. The insoluble sulfur produced by using carbon disulfide as quenching liquid can basically meet the requirements of radial tires, but the boiling point is only 42.7 ℃, the flash point is-30 ℃, and the production process is extremely inflammable and explosive. The method for preparing insoluble sulfur by atomization is mentioned in Chinese patent 201310511371.1 and Chinese patent 201310511388.7, but the method is only an explanation on the process and does not mention a specific reaction device.
In addition, the liquid flow is quenched basically in a pouring mode or a dropping mode, the quenching effect is poor, the conversion rate is low, and the reason why the insoluble sulfur content produced by the melting method is lower than that produced by the gasification method is also provided. Meanwhile, the generated insoluble sulfur crude product is blocky or granular and is not easy to crush after being solidified.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a rotary kiln type closed cycle spray reaction device for preparing insoluble sulfur, which can complete the high-temperature ring-opening reaction of sulfur and two processes of low-temperature crystallization by one device.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a rotary kiln type spray reaction device for preparing insoluble sulfur by closed cycle, which comprises a melting system, a feeding system, a high-temperature reaction furnace, a cooling chamber, a separation system, a gas analysis system, a cooling system, a pressure balance system and a discharging system; the outlet end of the melting system is communicated with the inlet end of the feeding system, the outlet end of the feeding system is provided with an atomizing nozzle, the atomizing nozzle is communicated with the high-temperature reaction furnace, the high-temperature reaction furnace is communicated with the cooling chamber, and the outlet end of the cooling system is communicated with the inside of the cooling chamber; the bottom of the cooling chamber is provided with the discharging system, the inlet end of the separating system is communicated with the cooling chamber, and the gas outlet end of the separating system is communicated with the inlet end of the cooling system; and the gas analysis system and the pressure balance system are arranged between the gas outlet end of the separation system and the inlet end of the cooling system.
Optionally, the cooling system includes a fan, a heat exchanger, a filter and a gas distributor which are sequentially communicated; the inlet end of the fan is communicated with the gas outlet end of the separation system; the gas distributor is used for introducing cooling gas into the cooling chamber.
Optionally, the separation system includes a separator and a tail gas purifier, the inlet end of the separator is communicated with the cooling chamber, the gas outlet end of the separator is communicated with the tail gas purifier, and the gas outlet end of the tail gas purifier is communicated with the inlet end of the fan.
Optionally, the cooling chamber is a horizontally placed cylindrical structure, the high-temperature reaction furnace is disposed at one side of the cooling chamber, and the gas distributor is disposed between the high-temperature reaction furnace and the cooling chamber; the discharging system is arranged at the bottom of the other side of the cooling cavity.
Optionally, the separation system includes a separator and a tail gas purifier, the inlet end of the separator is communicated with the cooling chamber, the gas outlet end of the separator is communicated with the tail gas purifier, and the gas outlet end of the tail gas purifier is communicated with the inlet end of the fan.
Optionally, the cooling chamber further includes a driving transmission mechanism, the driving transmission mechanism includes a first gear ring and a supporting circular rail which are arranged on the outer wall of the cooling chamber, and a rotatable supporting wheel and a driving motor which are arranged below the cooling chamber, a second gear is arranged on the power output end of the driving motor, and the second gear is meshed with the first gear ring; the supporting wheel is in contact with the supporting circular rail.
Optionally, the discharging system is a quantitative discharging device or a spiral discharging device.
The utility model discloses for prior art gain following technological effect:
(1) the insoluble sulfur spray reaction device has high stability, and the process characteristics are suitable for large-scale industrialized and continuous production.
(2) The insoluble sulfur spray reaction device relies on the traditional spray drying mechanism and has high feasibility.
(3) The production process of the insoluble sulfur has high safety, is environment-friendly and does not discharge three wastes.
(4) The product has high stability, can effectively improve the thermal stability, and does not have the blooming phenomenon in rubber compound.
(5) The utility model discloses the insoluble sulfur product of preparation can evenly distributed in the sizing material, effectively reduces the scorch when the sizing material is deposited, has prolonged the sizing material and has deposited the period, improves rubber product quality.
(6) The product has outstanding comprehensive performance, improves the self-adhesiveness of rubber materials, improves the adhesive property of steel wires and rubber during manufacturing tires, and endows rubber products with good comprehensive performance.
(7) The process of the utility model reduces the high requirement of insoluble sulfur on equipment in production and the high danger in the subsequent treatment process.
(8) The insoluble sulfur product prepared by the utility model has high quality stability, strong market competitiveness and good economic benefit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a rotary kiln type spray reaction device for preparing insoluble sulfur by closed cycle;
FIG. 2 is a schematic sectional view of a linear laminar flow air-homogenizing gas distributor in a spray reaction device for preparing insoluble sulfur by closed cycle according to the present invention;
FIG. 3 is a schematic top view of a linear laminar flow air-homogenizing distributor in a spray reactor for producing insoluble sulfur by closed cycle according to the present invention;
FIG. 4 is a schematic structural diagram of a volute type gas distributor in a spray reaction device for preparing insoluble sulfur by closed cycle according to the present invention.
Description of reference numerals: 1. a melting system; 2. a feed pump; 3. an atomizing spray head; 4. a high-temperature reaction furnace; 5. a gas distributor; 6. a cooling chamber; 7. a cyclone separator; 8. a tail gas purifier; 9. a gas analysis system; 10. a fan; 11. a heat exchanger; 12. a filter; 14. a pressure equalization system; 15. a discharge system; 16. laminar flow orifice plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the embodiment provides a rotary kiln type spray reaction device for preparing insoluble sulfur by closed cycle, which comprises a melting system 1, a feeding system, a high-temperature reaction furnace 4, a cooling chamber 6, a separation system, a gas analysis system 9, a cooling system, a pressure balance system 14 and a discharging system 15; the outlet end of the melting system 1 is communicated with the inlet end of the feeding system, the outlet end of the feeding system is provided with an atomizing nozzle 3, the atomizing nozzle 3 is communicated with the high-temperature reaction furnace 4, the high-temperature reaction furnace 4 is communicated with the cooling chamber 6, and the outlet end of the cooling system is communicated with the inside of the cooling chamber 6; the discharging system 15 is arranged at the bottom of the cooling chamber 6, the inlet end of the separation system is communicated with the cooling chamber 6, and the gas outlet end of the separation system is communicated with the inlet end of the cooling system; the gas analysis system 9 and the pressure equalization system 14 are arranged between the gas outlet end of the separation system and the inlet end of the cooling system.
In this embodiment, as shown in fig. 1 to 4, the cooling system includes a fan 10, a heat exchanger 11, a filter 12 and a gas distributor 5, which are connected in sequence; the inlet end of the fan 10 is communicated with the gas outlet end of the separation system; the gas distributor 5 is used for introducing cooling gas into the cooling chamber 6.
The cooling chamber 6 is a horizontally arranged cylindrical structure, the high-temperature reaction furnace 4 is arranged on one side of the cooling chamber 6, and the gas distributor 5 is arranged between the high-temperature reaction furnace 4 and the cooling chamber 6; the discharging system 15 is arranged at the bottom of the other side of the cooling chamber 6.
The cooling chamber 6 further comprises a driving transmission mechanism, the driving transmission mechanism comprises a first gear ring and a supporting circular rail which are arranged on the outer wall of the cooling chamber 6, and a rotatable supporting wheel and a driving motor which are arranged below the cooling chamber 6, a second gear is arranged on the power output end of the driving motor, and the second gear is meshed with the first gear ring; the supporting wheel is in contact with the supporting circular rail.
The discharge system 15 includes a quantitative discharge device, and may also be a spiral discharge device.
The separation system comprises a cyclone separator 7 and an exhaust purifier 8, wherein the inlet end of the cyclone separator 7 is communicated with the cooling chamber 6, the gas outlet end of the separator is communicated with the exhaust purifier 8, and the gas outlet end of the exhaust purifier 8 is communicated with the inlet end of the fan 10.
The bottom of the cyclone separator 7 is provided with a quantitative discharger or a spiral discharger. The tail gas purifier 8 is a bag-type dust remover, and a quantitative discharger or a spiral discharger is arranged at the bottom of the bag-type dust remover.
The rotary kiln type spray reaction device for preparing insoluble sulfur by closed cycle in the embodiment mainly comprises the following working processes:
the material is melted in the melting system 1, the melted material is sprayed into the high-temperature reaction furnace 4 through the feeding pump 2 and the atomizing nozzle 3, the high-temperature reaction furnace 4 is communicated with the cooling chamber 6, the material entering the cooling chamber 6 is rapidly cooled into solid particles by cooling gas from the gas distributor 5, the cooling chamber 6 rotates under the action of the driving transmission mechanism, the solid particles move from one end of the cooling chamber 6 to the other end in the rotating process, the gas is discharged from a discharge system 15 at the bottom of the other end of the cooling chamber 6, a small amount of solid particles enter a cyclone separator 7 along with the gas flow, the solid particles are separated by the cyclone separator 7 and discharged from the bottom of the cyclone separator 7, the gas flow enters an exhaust gas purifier 8, the clean gas is discharged from the top and enters the cooling system through a dust removal cloth bag, and the solid particles left in the exhaust gas purifier 8 are discharged from the bottom; in the cooling system, the air flow passes through a fan 10, a heat exchanger 11 and a filter 12 in sequence, and finally flows into the cooling chamber 6 through the gas distributor 5.
The gas analysis system 9 arranged between the tail gas purifier 8 and the fan 10 can analyze the components in the circulating gas flow, mainly detecting the oxygen concentration, thereby being convenient for the operators to adjust the materials and the gas introduced into the system.
The pressure balancing system 14 includes a safety valve, i.e. an automatic pressure relief valve, for controlling the gas pressure in the system, preventing the gas pressure from being too large to affect the operation of the device, and ensuring safe production.
The utility model provides a rotary kiln formula closed cycle preparation insoluble sulfur's spray reaction device, its whole technology has contained the atomizing technology fast reaction and the cold nitrogen that utilize spray drying reaction device and has quenched insoluble sulfur, has suppressed going on of reverse reaction effectively, avoids using inflammable and explosive's carbon disulfide as the extractant, obtains the method of insoluble sulfur. In the production process of insoluble sulfur by adopting a spray drying reaction device, quenching is one of very critical processes, plays a role in instantly terminating a reversible reaction, and further directly influences the content of the insoluble sulfur in a product. The required raw materials are simple and easy to obtain, the process is environment-friendly and pollution-free, and good social and economic benefits are achieved.
The spray reaction equipment atomizes certain liquid materials by using an atomizer, and micronized fog drops have extremely large surface area, promote the materials to generate drying, decomposition or cracking reaction under certain high-temperature atmosphere conditions, and are the most widely applied process in high-end new material industries. It is especially suitable for preparing powdery and granular solid products from solution, emulsion, suspension and pasty liquid raw materials. Therefore, the sulfur can be melted at high temperature and solidified at low temperature, when the sulfur is in a melting state above 120 ℃, the sulfur can be sprayed into a reaction chamber above 200 ℃ by adopting a spraying process, the sulfur can be subjected to polymerization reaction above the temperature to obtain polymeric sulfur, a cooling device is added at the rear part of the device, the polymeric sulfur can be rapidly cooled to below 60 ℃, so that the polymeric sulfur is converted into insoluble sulfur, the conversion rate of the sulfur is improved, and the use of inflammable and explosive carbon disulfide as a solvent is avoided, and the process has the characteristics of environmental friendliness and the like.
Utilize the device of the utility model to prepare insoluble sulfur, adopt gases such as inert gas, superheated steam and the like to effectively reduce the oxidation of sulfur, and improve the product quality. The quenching section process effectively restrains the reverse reaction, thereby directly influencing the content of insoluble sulfur in the product. The obtained product has the performance reaching the product level of companies such as Flexsys and the like abroad, has environment-friendly process, can play the roles of saving resources and reducing cost, and has good market prospect.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. A rotary kiln type spray reaction device for preparing insoluble sulfur by closed cycle is characterized by comprising a melting system, a feeding system, a high-temperature reaction furnace, a cooling chamber, a separation system, a gas analysis system, a cooling system, a pressure balance system and a discharging system; the outlet end of the melting system is communicated with the inlet end of the feeding system, the outlet end of the feeding system is provided with an atomizing nozzle, the atomizing nozzle is communicated with the high-temperature reaction furnace, the high-temperature reaction furnace is communicated with the cooling chamber, and the outlet end of the cooling system is communicated with the inside of the cooling chamber; the bottom of the cooling chamber is provided with the discharging system, the inlet end of the separating system is communicated with the cooling chamber, and the gas outlet end of the separating system is communicated with the inlet end of the cooling system; and the gas analysis system and the pressure balance system are arranged between the gas outlet end of the separation system and the inlet end of the cooling system.
2. The rotary kiln type spray reaction device for preparing insoluble sulfur by closed cycle according to claim 1, wherein the cooling system comprises a fan, a heat exchanger, a filter and a gas distributor which are communicated in sequence; the inlet end of the fan is communicated with the gas outlet end of the separation system; the gas distributor is used for introducing cooling gas into the cooling chamber.
3. The rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle according to claim 2, wherein the separation system comprises a separator and an exhaust gas purifier, the inlet end of the separator is communicated with the cooling chamber, the gas outlet end of the separator is communicated with the exhaust gas purifier, and the gas outlet end of the exhaust gas purifier is communicated with the inlet end of the fan.
4. The rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle according to claim 2, wherein the cooling chamber is a horizontally placed cylindrical structure, the high-temperature reaction furnace is arranged at one side of the cooling chamber, and the gas distributor is arranged between the high-temperature reaction furnace and the cooling chamber; the discharging system is arranged at the bottom of the other side of the cooling cavity.
5. The rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle according to claim 4, wherein the separation system comprises a separator and an exhaust gas purifier, the inlet end of the separator is communicated with the cooling chamber, the gas outlet end of the separator is communicated with the exhaust gas purifier, and the gas outlet end of the exhaust gas purifier is communicated with the inlet end of the fan.
6. The rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle according to claim 4, wherein the cooling chamber further comprises a driving transmission mechanism, the driving transmission mechanism comprises a first gear ring and a supporting circular rail which are arranged on the outer wall of the cooling chamber, and a rotatable supporting wheel and a driving motor which are arranged below the cooling chamber, a second gear is arranged on the power output end of the driving motor, and the second gear is meshed with the first gear ring; the supporting wheel is in contact with the supporting circular rail.
7. The rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle according to claim 1, wherein the discharge system is a quantitative discharger or a spiral discharger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020082178.6U CN211688262U (en) | 2020-01-15 | 2020-01-15 | Rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020082178.6U CN211688262U (en) | 2020-01-15 | 2020-01-15 | Rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211688262U true CN211688262U (en) | 2020-10-16 |
Family
ID=72772940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020082178.6U Active CN211688262U (en) | 2020-01-15 | 2020-01-15 | Rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211688262U (en) |
-
2020
- 2020-01-15 CN CN202020082178.6U patent/CN211688262U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103818890B (en) | A kind of production method of high-quality polyphosphoric acids | |
| CN102603000A (en) | Process for preparing high-purity vanadium pentoxide by adopting ammonium metavanadate as raw material | |
| CN103663440B (en) | Gas atomization method and device for preparing mesocarbon microbeads | |
| CN103224659A (en) | Filler, synthetic rubber and wet rubber compound integrated production method | |
| CN107619025A (en) | A kind of gas reduction sodium sulphate prepares the new technology of anhydrous sodium sulfide | |
| CN102001639B (en) | Method for continuously producing potassium pyrophosphate by two-step process | |
| CN109524736A (en) | The recovery method and application thereof of graphite in old and useless battery | |
| CN112591795A (en) | Method for treating tail gas generated in preparation of low-valence vanadium from ammonium metavanadate | |
| CN211688262U (en) | Rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle | |
| CN113083204B (en) | NMP synthesis process | |
| CN111135784A (en) | Spray reaction device for preparing insoluble sulfur by vertical tower type closed cycle | |
| CN111039263A (en) | Spray reaction device for preparing insoluble sulfur in closed cycle manner | |
| CN212595733U (en) | Spray reaction device for preparing insoluble sulfur by vertical tower type closed cycle | |
| CN211688263U (en) | Spray reaction device for preparing insoluble sulfur in closed cycle manner | |
| CN211733859U (en) | Spray reaction device for preparing insoluble sulfur by box-type closed cycle | |
| CN110054186A (en) | A method of it producing capacitance carbon desiliconization Sewage treatment and utilizes | |
| CN111056536A (en) | Rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle | |
| CN111056537A (en) | Spray reaction device for preparing insoluble sulfur by box-type closed cycle | |
| CN211688261U (en) | Device for preparing insoluble sulfur | |
| CN104438295A (en) | Method for depainting pot-top can | |
| CN102277205B (en) | Method for extracting salt from coke oven gas by desulfuration and decyanation | |
| CN103289449A (en) | Method for integrated production of carbon black and white carbon black | |
| CN109852434A (en) | A kind of method of coke-oven-gas desulfurization and decyanation concentration relieving haperacidity | |
| CN206494895U (en) | The anthracitic bellows rotary reactor of one kind passivation cooling | |
| CN102633245A (en) | Control method of intermediate phase carbon microball D50 and device for producing intermediate phase carbon microball |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |