CN217651149U - System for preparing impregnant asphalt from ethylene tar - Google Patents
System for preparing impregnant asphalt from ethylene tar Download PDFInfo
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- CN217651149U CN217651149U CN202221541243.2U CN202221541243U CN217651149U CN 217651149 U CN217651149 U CN 217651149U CN 202221541243 U CN202221541243 U CN 202221541243U CN 217651149 U CN217651149 U CN 217651149U
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Abstract
The utility model relates to an ethylene tar system impregnant pitch system, including flash distillation system, the heating furnace that is linked together with flash distillation system and the fractionating tower that is linked together with the heating furnace, flash distillation system intercommunication has the ethylene tar inlet pipe, and fractionating tower bottom intercommunication has impregnant pitch ejection of compact pipeline, and the intercommunication has the cooler at the bottom of the tower in the impregnant pitch ejection of compact pipeline. The utility model has the advantages of being scientific and reasonable in structural design, easily realize, in the impregnant pitch system is made to ethylene tar, adopt multistage flash distillation heating before the fractionation, can the light component of effectual separation ethylene tar, effectively improve the separation precision for the separating rate, meanwhile, the utility model discloses well heating furnace can also be the atmospheric pressure stove for the decompression furnace, and flash distillation heating and fractionating tower separation are the decompression operation, can lowering system's operating temperature, improve separation efficiency.
Description
Technical Field
The utility model relates to a chemical industry raw materials separation technical field especially relates to an ethylene tar system impregnant pitch system.
Background
The impregnant asphalt is a common densification reinforcing agent in the production of carbon materials, and is mainly used for impregnation processes of high-power and ultrahigh-power graphite electrodes and production raw materials of high-tech products such as aerospace, artificial bones and needle coke; in the preparation process of high-performance carbon materials such as C/C composite high-density high-strength carbon blocks and the like, the function of the carbon materials is not replaceable. The quality of the impregnant directly affects the production cost and the material performance of the high-performance carbon material, so carbon material manufacturers pay great attention to the development and research of the impregnant. The production of impregnant asphalt generally uses coal tar or coal asphalt as raw material, and also uses petroleum asphalt or petroleum asphalt and coal asphalt as raw material.
Before the last 70 th century, coal pitch was used as a binder and an impregnant in the production of carbon materials, but the softening point of the coal pitch used for impregnation was lower. After 70 s, foreign carbon material manufacturing enterprises generally adopt special impregnant asphalt with low QI content for high-pressure impregnation treatment, such as specially processed petroleum asphalt as the carbon material impregnant asphalt. Not all petroleum asphalt can be used as a proper carbon material impregnant, but petroleum asphalt is similar to coal asphalt, and the composition of the petroleum asphalt has fewer harmful impurities and small pollution to the environment. At present, the impregnant asphalt special for carbon materials is not widely adopted in China, and particularly, the impregnant asphalt for high-power and ultrahigh-power electrodes is still in the research and development stage, so that the development and the development of petroleum impregnants suitable for the production of carbon materials become technical problems to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome exist among the prior art not enough, provide an ethylene tar preparation impregnant pitch system.
The utility model discloses a realize through following technical scheme:
the utility model provides an ethylene tar system of impregnant pitch, includes flash distillation system, the heating furnace that is linked together with flash distillation system and the fractionating tower that is linked together with the heating furnace, flash distillation system intercommunication has the ethylene tar inlet pipe, fractionating tower bottom intercommunication has impregnant pitch discharge pipeline, intercommunication has tower bottom cooler in the impregnant pitch discharge pipeline.
According to the above technical solution, preferably, the flash system includes one or more sets of flash tanks connected in series, and the flash tanks are respectively communicated with heaters.
According to the technical scheme, preferably, the flash evaporation system comprises a primary flash evaporation tank, a primary heater communicated with the primary flash evaporation tank, a secondary heater communicated with the bottom of the primary flash evaporation tank and a secondary flash evaporation tank communicated with the secondary heater, the upper part of the primary flash evaporation tank is communicated with an ethylene tar feeding pipe, and the bottom of the secondary flash evaporation tank is communicated with the heating furnace. One-level flash tank upper end intercommunication has one to dodge the condenser, one dodge the condenser intercommunication and have vacuum pipeline, the export intercommunication of one dodge the condenser has one to dodge oily material pipeline, second grade flash tank upper end intercommunication has two to dodge the condenser, two dodge condenser intercommunication have vacuum pipeline, two export intercommunications that dodge the condenser have two to dodge oily material pipeline.
According to the technical scheme, preferably, the top of the fractionating tower is communicated with a plurality of steam jet pumps, and each steam jet pump is respectively communicated with the condensate tank through a tower top condenser.
According to the above technical solution, preferably, the middle of the fractionating tower comprises at least 1 set of packing layers, the middle of the fractionating tower comprises a plurality of sets of packing layers, and a plurality of discharge coolers are respectively and outwardly communicated between the packing layers of the fractionating tower.
The utility model has the advantages that:
the utility model has the advantages of being scientific and reasonable in structural design, easily realize, in the impregnant pitch system is made to ethylene tar, adopt multistage flash distillation heating before the fractionation, can the light component of effectual separation ethylene tar, effectively improve the separation precision for the separating rate, meanwhile, the utility model discloses well heating furnace can also be the atmospheric pressure stove for the decompression furnace, and flash distillation heating and fractionating tower separation are the decompression operation, can lowering system's operating temperature, improve separation efficiency.
Drawings
Fig. 1 is a schematic diagram of the system connection structure of the present invention.
In the figure: 1. a primary heater; 2. a first-stage flash tank; 3. a flash condenser; 4. a secondary heater; 5. a secondary flash tank; 6. a secondary flash condenser; 7. heating furnace; 8. a fractionating column; 9. a first-stage overhead condenser; 10. a secondary tower top condenser; 11. a third-stage tower top condenser; 12. a condensate tank; 13. a wire cooler; 14. a two-wire cooler; 15. a tower bottom cooler.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the utility model.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in the figure, the utility model discloses a flash distillation system, the heating furnace 7 that is linked together with the flash distillation system and the fractionating tower 8 that is linked together with heating furnace 7, the material outlet of heating furnace 7 passes through the pipeline in this example and is connected with the material feed inlet of 8 lower parts of fractionating tower, 8 lower parts intercommunication of fractionating tower have the heating steam pipeline, flash distillation system intercommunication has the ethylene tar inlet pipe, 8 bottom intercommunications of fractionating tower have impregnant pitch discharge pipeline, the intercommunication has tower bottom cooler 15 in the impregnant pitch discharge pipeline, wherein the material outlet department of 8 bottoms of fractionating tower connects impregnant pitch discharge pipeline and pump and carries the material to 15 entrances of tower bottom cooler, and the exit linkage pipeline of tower bottom cooler 15 is with transport target product impregnant pitch.
According to the above embodiment, preferably, the flash system includes one or more sets of flash tanks connected in series, and the flash tanks are respectively communicated with heaters. Specifically, the flash evaporation system in this example comprises a primary flash evaporation tank 2, a primary heater 1 communicated with the primary flash evaporation tank 2, a secondary heater 4 communicated with the bottom of the primary flash evaporation tank 2, and a secondary flash evaporation tank 5 communicated with the secondary heater 4, wherein the upper part of the primary flash evaporation tank 2 is communicated with an ethylene tar feeding pipe, and the bottom of the secondary flash evaporation tank 5 is communicated with a heating furnace 7. Wherein, the upper portion of one-level flash tank 2 has two feed inlets, and one of them connects the ethylene tar inlet pipe, and 1 material export of primary heater links to each other through another feed inlet of pipeline with one- level flash tank 2, and 1 material entry of primary heater passes through pump and pipeline and links to each other with the below material export of one-level flash tank 2. The material outlet below the first-level flash tank 2 is connected with the material inlet of the second-level heater 4 through a pump and a pipeline to convey materials, the material outlet of the second-level heater 4 is connected with the middle feeding pipe opening of the second-level flash tank 5 through a pipeline to convey materials, and the material outlet below the second-level flash tank 5 is connected with the inlet of the heating furnace 7 through a pump and a pipeline to convey materials. In addition, the material outlet below the first-stage flash tank 2 can be connected to the inlet of the heating furnace 7 by a pump and a pipe, and when a set of flash tank and heater is used in the flash system, the material passing through the first-stage flash tank 2 can directly enter the heating furnace 7 by the pump and the pipe.
According to the above embodiment, preferably, 2 upper end intercommunications of one-level flash tank have a flash condenser 3, a flash condenser 3 intercommunication has vacuum line, the export intercommunication of a flash condenser 3 has a flash oil material pipeline, 5 upper end intercommunications of second grade flash tank have two flash condensers 6, two flash condensers 6 intercommunication have vacuum line, the export intercommunication of two flash condensers 6 has two flash oil material pipelines, connects the nitrogen pipeline on the vacuum line in this example in order to be used for carrying nitrogen gas. Wherein, first sudden strain of a muscle condenser 3 and two sudden strain of a muscle condenser 6 are connected with circulating water upper hose and circulating water wet return respectively, and first sudden strain of a muscle condenser 3 and two sudden strain of a muscle condenser 6 can select circulating water condensation or low temperature water condensation according to the raw materials composition change. Specifically, in this example, the material outlet of the first-level flash tank 2 top is connected with the flash condenser 3 material inlet through a pipeline and is used for conveying materials, the flash condenser 3 is used for cooling the gaseous phase evaporated by the first-level flash tank 2, the material outlet of the flash condenser 3 top is connected with the vacuum pipeline, and the material outlet of the flash condenser 3 bottom is connected with the flash oil material pipeline. 5 top material outlets of second grade flash tank are used for transported substance material through pipeline and 6 material access connections of two flash condensers, two flash condensers 6 are used for cooling the gaseous phase that 5 flash tanks of second grade evaporated, and 6 top material outlets of two flash condensers and vacuum piping connection, two flash oil material pipelines of 6 below material exit linkage of two flash condensers.
According to the above embodiment, preferably, the top of the fractionating tower 8 is connected to a plurality of vapor jet pumps, each of which is connected to the condensate tank 12 through an overhead condenser, wherein the overhead condenser is circulating water or low-temperature water for condensation, and the lower outlet of the condensate tank 12 is connected to a downstream process through a pipeline for conveying the overhead oil fraction in the condensate tank 12. In this example, a material outlet at the top of the fractionating tower 8 is connected with a three-stage steam jet pump system through a pipeline, a steam jet pump outlet at each stage is connected with a material inlet of a tower top condenser (a first-stage tower top condenser 9, a second-stage tower top condenser 10 and a third-stage tower top condenser 11) at each stage through a pipeline, a material outlet below each tower top condenser is connected with a top inlet of a condensate tank 12 through a pipeline for conveying materials, and a lower outlet of the condensate tank 12 is connected with a downstream process through a pipeline for conveying tower top oil fraction in the condensate tank 12.
According to the above embodiment, preferably, the middle of the fractionating tower 8 includes at least 1 set of packing layers, in this example, a multi-section structured packing layer is disposed in the fractionating tower 8, and the tower body diameter, the packing height, the number of packing sections, and the feed inlet position of the fractionating tower 8 can be adaptively adjusted during design according to the components of the raw material ethylene tar and the final product index.
According to the above embodiment, preferably, the fractionating tower 8 includes a plurality of packing layers in the middle, and a plurality of discharge coolers are respectively communicated with the fractionating tower 8 between the packing layers. In this embodiment, two groups of discharge coolers are provided, which are a first line cooler 13 and a second line cooler 14, in this embodiment, two discharge ports are respectively provided at the upper section and the lower section of the middle part of the fractionating tower 8, the discharge port located at the upper section is connected with the material inlet of the first line cooler 13 through a pipeline for conveying a material, the material outlet of the first line cooler 13 is connected with the pipeline for conveying a first distillate oil material, the discharge port located at the lower section is connected with the material inlet of the second line cooler 14 through a pipeline for conveying a material, and the material outlet of the second line cooler 14 is connected with the pipeline for conveying a second distillate oil material.
The specific working process of this patent is as follows: ethylene tar raw materials enter from a feed inlet at the upper part of a primary flash tank, are pumped out by a pipeline and a pump and are conveyed to a primary heater, a gas phase enters a primary flash condenser after the flash evaporation of the primary flash tank, a liquid phase is conveyed to a secondary heater by the pump and the pipeline to be heated and then enters a secondary flash tank, a gas phase enters a secondary flash condenser after the flash evaporation of the material of the secondary flash tank, a liquid phase is conveyed to a material by the pump and the pipeline to be conveyed to a heating furnace and then enters a fractionating tower after being heated, a gas phase at the top of the fractionating tower is condensed by a tower top condenser to obtain condensate which is collected in a condensate tank, a fraction at the upper section of the fractionating tower is cooled by a primary cooler to obtain a first fraction oil, a fraction at the lower section of the fractionating tower is cooled by a secondary cooler to obtain a second fraction oil, and materials at the bottom of the fractionating tower are cooled by a tower bottom cooler to obtain impregnant asphalt.
In the present system, there are different uses for the product extracted in the different stages, in particular: the main components of the first flash oil in the first flash oil material pipeline comprise C10 aromatic hydrocarbon, methyl indene, naphthalene, methyl naphthalene and the like, and the first flash oil is mainly used as a raw material for extracting petroleum naphthalene and methyl naphthalene and can also be used as a raw material for producing petroleum resin; the main components of the secondary flash oil in the secondary flash oil material pipeline comprise C11-C13 aromatic hydrocarbon, dimethylnaphthalene, ethylnaphthalene, polycyclic compounds and the like, and the secondary flash oil material pipeline is mainly used as a raw material for diesel oil hydrogenation and diesel oil refining; the main components of the tower top oil fraction comprise aromatic hydrocarbons with more than 14 carbon atoms, anthracene-phenanthrene and other condensed ring compounds, and are mainly used as carbon black raw materials; the first distillate oil can be used as raw material for producing bunker fuel oil, and the second distillate oil mainly comprises low molecular weight polymer which can be used as liquid resin and rubber filler.
The utility model discloses structural design scientific and reasonable easily realizes, in the impregnant pitch system is made to ethylene tar, adopts multistage flash distillation heating before the fractionation, can be effectual light component of separation ethylene tar, effectively improves the separation precision for the separating rate, meanwhile, the utility model discloses well heating stove can also be the atmospheric pressure stove for the decompression furnace, and flash distillation heating and fractionating tower separation are the decompression operation, and operating temperature that can the lowering system improves separation efficiency.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The system for preparing impregnant asphalt from ethylene tar is characterized by comprising a flash evaporation system, a heating furnace communicated with the flash evaporation system and a fractionating tower communicated with the heating furnace, wherein the flash evaporation system is communicated with an ethylene tar feeding pipe, the bottom of the fractionating tower is communicated with an impregnant asphalt discharging pipeline, and a tower bottom cooler is communicated in the impregnant asphalt discharging pipeline.
2. The system for preparing impregnant asphalt by using ethylene tar as claimed in claim 1, wherein the flash system comprises one or more sets of flash tanks connected in series, and the flash tanks are respectively communicated with a heater.
3. The system of claim 2, wherein the flash evaporation system comprises a primary flash evaporation tank, a primary heater communicated with the primary flash evaporation tank, a secondary heater communicated with the bottom of the primary flash evaporation tank, and a secondary flash evaporation tank communicated with the secondary heater, wherein the upper part of the primary flash evaporation tank is communicated with the ethylene tar feeding pipe, and the bottom of the secondary flash evaporation tank is communicated with the heating furnace.
4. The system for preparing impregnant asphalt by using ethylene tar according to claim 3, wherein the upper end of the primary flash tank is communicated with a flash condenser, the first flash condenser is communicated with a vacuum pipeline, the outlet of the first flash condenser is communicated with a flash material pipeline, the upper end of the secondary flash tank is communicated with a secondary flash condenser, the secondary flash condenser is communicated with a vacuum pipeline, and the outlet of the secondary flash condenser is communicated with a secondary flash material pipeline.
5. The system according to any one of claims 1 to 4, wherein a plurality of steam jet pumps are connected to the top of the fractionating tower, and each steam jet pump is connected to the condensate tank through an overhead condenser.
6. The system of claim 1, wherein the fractionator includes at least 1 packing layer in the middle portion of the fractionator.
7. The system for preparing impregnant asphalt by using ethylene tar as claimed in claim 6, wherein the middle part of the fractionating tower comprises a plurality of packing layers, and a plurality of discharging coolers are respectively communicated with the outside of the fractionating tower between the packing layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221541243.2U CN217651149U (en) | 2022-06-20 | 2022-06-20 | System for preparing impregnant asphalt from ethylene tar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221541243.2U CN217651149U (en) | 2022-06-20 | 2022-06-20 | System for preparing impregnant asphalt from ethylene tar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217651149U true CN217651149U (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221541243.2U Active CN217651149U (en) | 2022-06-20 | 2022-06-20 | System for preparing impregnant asphalt from ethylene tar |
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| Country | Link |
|---|---|
| CN (1) | CN217651149U (en) |
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- 2022-06-20 CN CN202221541243.2U patent/CN217651149U/en active Active
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