CN111056536A - 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
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 74
- 239000011593 sulfur Substances 0.000 title claims abstract description 74
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 57
- 239000007921 spray Substances 0.000 title claims abstract description 26
- 238000002844 melting Methods 0.000 claims abstract description 14
- 230000008018 melting Effects 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 70
- 239000007789 gas Substances 0.000 claims description 59
- 238000000926 separation method Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 12
- 238000004868 gas analysis Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000000112 cooling gas Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 32
- 238000010791 quenching Methods 0.000 abstract description 8
- 230000000171 quenching effect Effects 0.000 abstract description 7
- 230000002441 reversible effect Effects 0.000 abstract description 4
- 239000011261 inert gas Substances 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 23
- 239000000463 material Substances 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 13
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 12
- 239000007788 liquid Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000001694 spray drying Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000006084 composite stabilizer Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- -1 inert gas Chemical compound 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/12—Insoluble sulfur (mu-sulfur)
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a rotary kiln type spray reaction device for preparing insoluble sulfur through closed cycle, and relates to the technical field of preparation equipment for insoluble sulfur for rubber tires and rubber products. 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 invention relates to the technical field of preparation equipment of insoluble sulfur for rubber tires and rubber products, in particular to a rotary kiln type spray reaction device for preparing insoluble sulfur in a closed cycle manner.
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, an Insoluble Sulfur (IS) product IS produced due to transportation, the Insoluble Sulfur (IS) IS a linear long-chain high-molecular polymer for deep processing of sulfur (S), the number of sulfur atoms on a molecular chain IS up to more than 108, and the insoluble sulfur IS insoluble in carbon disulfide, so that the insoluble sulfur IS called as the insoluble sulfur at present, the IS IS a recognized optimal rubber vulcanizing agent with the characteristic of no blooming, and the insoluble sulfur has the advantages that ① enables a rubber material to have good self-adhesiveness, can improve the adhesive strength among layers of a multi-layer rubber product, particularly can improve the adhesive property of a steel wire and rubber during manufacturing of a tire, ② insoluble sulfur IS uniformly distributed in the rubber material, effectively reduces the phenomenon of scorching during storage of the rubber material, prolongs the storage period of the rubber material, ensures uniform vulcanization, improves the quality of the rubber product, does not migrate to the surface of the rubber material to generate blooming due to the insoluble sulfur, ensures the appearance quality of a light-color product.
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 problems, the invention provides a rotary kiln type spray reaction device for preparing insoluble sulfur in a closed cycle manner, which can complete two processes of high-temperature ring-opening reaction and low-temperature crystallization of sulfur by one device.
In order to achieve the purpose, the invention provides the following scheme:
the invention 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, wherein the melting system is connected with the feeding 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.
Compared with the prior art, the invention has the following technical effects:
(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 insoluble sulfur product prepared by the invention can be uniformly distributed in the rubber material, effectively reduces scorching of the rubber material during storage, prolongs the storage period of the rubber material and improves the quality of rubber products.
(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 reduces the high requirement of insoluble sulfur on equipment in production and the high risk in the subsequent treatment process.
(8) The insoluble sulfur product prepared by the invention 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 needed 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a rotary kiln type spray reaction device for closed cycle production of insoluble sulfur according to the present invention;
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 clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 whole process of the rotary kiln type spray reaction device for preparing the insoluble sulfur in a closed cycle manner comprises the steps of utilizing the atomization process of the spray drying reaction device to carry out rapid reaction and utilizing cold nitrogen to carry out rapid cooling on the insoluble sulfur, effectively inhibiting the reverse reaction from being carried out, and avoiding the method of obtaining the insoluble sulfur by using inflammable and explosive carbon disulfide as an extracting agent. 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.
The device of the invention is used for preparing insoluble sulfur, and gases such as inert gas, superheated steam and the like are adopted 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 a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the 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.
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| CN106744707A (en) * | 2017-03-06 | 2017-05-31 | 杨松 | One kind prepares insoluble sulfur process unit |
| CN109667795A (en) * | 2019-02-28 | 2019-04-23 | 青岛海信日立空调系统有限公司 | A kind of blower collector, centrifugal blower and air-conditioning system |
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2020
- 2020-01-15 CN CN202010040764.9A patent/CN111056536A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1227741A (en) * | 1959-01-31 | 1960-08-24 | Koppers Gmbh Heinrich | Method and device for obtaining pulverulent sulfur |
| CN103539079A (en) * | 2013-10-25 | 2014-01-29 | 北京化工大学 | Method for one-step preparation of insoluble sulfur |
| CN105688778A (en) * | 2016-03-29 | 2016-06-22 | 常州市先导干燥设备有限公司 | Closed-cycle high-temperature airflow reaction device |
| CN106744707A (en) * | 2017-03-06 | 2017-05-31 | 杨松 | One kind prepares insoluble sulfur process unit |
| CN109667795A (en) * | 2019-02-28 | 2019-04-23 | 青岛海信日立空调系统有限公司 | A kind of blower collector, centrifugal blower and air-conditioning system |
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