Device for producing environment-friendly rubber oil based on refined coal-based Fischer-Tropsch wax
By using refined coal-based Fischer-Tropsch wax in rubber oil production, and using isomerial dewaxing reaction and fractionation technology, the problems of complex processes and high production costs in the existing technology are solved, and the production of sulfur-free, nitrogen-free and aromatic-free environmentally friendly rubber oil is achieved.
Patent Information
- Application Number
- CN202421045611.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-14
AI Technical Summary
In the prior art, the production process of rubber oil is long and the equipment is complex, resulting in high production costs, and the products often contain harmful components such as aromatic hydrocarbons.
Using a device based on refined coal-based Fischer-Tropsch wax, isomeric and separation are performed through a combination of an isomeric dewaxing reaction device, an atmospheric fractionation tower and a reduced pressure tower to obtain a sulfur-free, nitrogen-free and aromatic-free environmentally friendly rubber oil.
The production process is simplified, the production cost is reduced, and the rubber oil obtained is more environmentally friendly and is suitable for the rubber and tire processing industry.
Smart Images
Figure CN222631357U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rubber oil preparation, in particular to a device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax. Background Art
[0002] Recycled oil is recycled base oil, which is a base oil obtained by reprocessing waste mineral oil. Waste mineral oil in my country is mainly produced by transportation (automobiles use the most oil) and various industrial and mining enterprises, mainly waste lubricating oil and other industrial oils (including engine oil, hydraulic oil, transformer oil, solvent oil, etc.). Recycled oil is generally used for the blending of lubricating oil and diesel and the production of metalworking fluids, which can reduce the consumption of crude oil.
[0003] In the prior art, aromatic oils containing polycyclic aromatic compounds are widely used in rubber and tire processing industries. The high aromatic content of aromatic oils can improve compatibility and affinity with rubber, but such aromatic oils have adverse effects on the human body and the environment. Therefore, various production enterprises are actively switching to environmentally friendly rubber oils. At present, the production of environmentally friendly rubber oils mainly uses certain distillate oils from petrochemicals for solvent refining or hydrogenation solvent combined refining treatment, and the products are then distilled and separated to obtain rubber oil. The process flow is long, the equipment used in the preparation process is complicated and cumbersome, and the production cost is high. Utility Model Content
[0004] The utility model overcomes the shortcomings of the prior art and proposes a device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax.
[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.
[0006] A device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax comprises an isomerization dewaxing reaction device, an air cooler, a fractionation tower feed heating furnace, a normal pressure fractionation tower, a vacuum tower feed heating furnace and a vacuum tower; the feed port of the isomerization dewaxing reaction device is connected to a Fischer-Tropsch wax storage tank, the discharge port of the isomerization dewaxing reaction device is connected to the air cooler, the air cooler is connected to a hydrogen separation circulation system, the discharge port of the hydrogen separation circulation system is connected to the fractionation tower feed heating furnace, the discharge port of the fractionation tower feed heating furnace is connected to the feed port of the normal pressure fractionation tower, the discharge port at the bottom of the normal pressure fractionation tower is connected to the vacuum tower feed heating furnace through a fractionation tower bottom pump, the discharge port of the vacuum tower feed heating furnace is connected to the vacuum tower, and the middle and bottom outlets of the vacuum tower are connected to a rubber oil storage tank through a discharge pump.
[0007] Furthermore, the Fischer-Tropsch wax storage tank is connected to the Fischer-Tropsch wax heating furnace via a feed pump, and the Fischer-Tropsch wax heating furnace is connected to the top feed port of the isomerized dewaxing reaction device.
[0008] Furthermore, the middle discharge port of the atmospheric distillation tower is connected to the light diesel oil storage tank through a pipeline, and the top discharge port of the atmospheric distillation tower is connected to the naphtha storage tank through a pipeline.
[0009] Furthermore, the top discharge port of the vacuum tower is connected to a heavy diesel storage tank through a customs clearance pipeline.
[0010] Furthermore, the hydrogen separation circulation system includes a hot separator and a cold separator, the air cooler is connected to the hot separator, the hot separator is connected to the cold separator, and the cold separator is connected to the distillation tower feed heating furnace.
[0011] Furthermore, the bottom outlet of the cold separator is connected to the distillation tower feed heating furnace, the top outlet of the cold separator is connected to the circulating hydrogen inlet separator, and the circulating hydrogen inlet separator is connected to the cold hydrogen inlet of the isomerization dewaxing reaction device through a circulating hydrogen compressor.
[0012] Furthermore, the bottom discharge port of the isomerization dewaxing reaction device is connected to the hot phase inlet of the heat exchanger, the cold phase inlet of the heat exchanger is connected to the Fischer-Tropsch wax storage tank, the hot phase outlet of the heat exchanger is connected to the isomerization dewaxing reaction device, and the cold phase outlet of the heat exchanger is connected to the air cooler.
[0013] The beneficial effects of the utility model compared with the prior art are:
[0014] The utility model utilizes refined Fischer-Tropsch wax in indirect liquefied coal-to-oil products as raw material, adjusts and improves a rubber oil production device according to the characteristics of the raw material, and separates naphtha and light diesel components through an atmospheric distillation device after passing through an isomerization dewaxing reaction device, and then separates heavy diesel components at the top of a vacuum distillation device, and obtains rubber oil in the middle and lower parts of the tower.
[0015] The utility model can effectively utilize the high cleanliness characteristics of coal-to-oil, obtain environmentally friendly rubber oil through isomerization and separation, the process flow is short, the equipment of the entire production process is simplified, and the production cost is low. The obtained rubber oil contains no sulfur, no nitrogen, and no aromatics, realizing the preparation of an environmentally friendly rubber oil. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic structural diagram of the device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax according to the utility model;
[0017] In the figure: 1. Heterodewaxing reaction unit; 2. Air cooler; 3. Feed heating furnace for distillation tower; 4. Atmospheric pressure distillation tower; 5. Feed heating furnace for vacuum tower; 6. Vacuum tower; 7. Fischer-Tropsch wax storage tank; 8. Fractionation tower bottom pump; 9. Discharge pump; 10. Feed pump; 11. Fischer-Tropsch wax heating furnace; 12. Hot separator; 13. Cold separator; 14. Circulating hydrogen inlet separator tank; 15. Circulating hydrogen compressor; 16. Heat exchanger. DETAILED DESCRIPTION
[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail in combination with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The technical solution of the present invention is described in detail below in combination with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.
[0019] See also Figure 1 This embodiment proposes a device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax, including an isomerization dewaxing reaction device 1, an air cooler 2, a distillation tower feed heating furnace 3, a normal pressure distillation tower 4, a vacuum tower feed heating furnace 5, a vacuum tower 6, a Fischer-Tropsch wax storage tank 7 and a heat exchanger 16.
[0020] The bottom discharge port of the isomerization dewaxing reaction unit 1 is connected to the hot phase inlet of the heat exchanger 16, and the Fischer-Tropsch wax storage tank 7 is connected to the cold phase inlet of the heat exchanger 16 through the feed pump 10. The hot phase outlet of the heat exchanger 16 is connected to the Fischer-Tropsch wax heating furnace 11, and the Fischer-Tropsch wax heating furnace 11 is connected to the top feed port of the isomerization dewaxing reaction unit 1. The cold phase outlet of the heat exchanger 16 is connected to the air cooler 2. The Fischer-Tropsch wax storage tank 7 stores refined coal-based Fischer-Tropsch wax, which enters the heat exchanger 16 through the feed pump 10 to exchange heat with the reaction product of the discharge port of the isomerization dewaxing reaction unit 1, and then enters the Fischer-Tropsch wax heating furnace 11 for further heating, and then enters the isomerization dewaxing reaction unit 1 for hydrogenation cracking reaction with hydrogen.
[0021] The discharge port of the isomerization dewaxing reaction device 1 is connected to the air cooler 2, and the air cooler 2 is connected to the hydrogen separation circulation system, and the discharge port of the hydrogen separation circulation system is connected to the fractionation tower feed heating furnace 3; the reaction product is cooled by the air cooler 2, enters the hydrogen separation circulation system to cool down and recover the hydrogen, and is sent to the isomerization dewaxing reaction device 1 again for use. Specifically, the hydrogen separation circulation system includes a hot separator 12 and a cold separator 13, the air cooler 2 is connected to the hot separator 12, the top outlet of the hot separator 12 is connected to the cold separator 13, and the bottom outlet of the hot separator 12 and the bottom outlet of the cold separator 13 are both connected to the fractionation tower feed heating furnace 3. The top outlet of the cold separator 13 is connected to the circulating hydrogen inlet separator 14, and the circulating hydrogen inlet separator 14 is connected to the cold hydrogen inlet of the isomerization dewaxing reaction device 1 through the circulating hydrogen compressor 15.
[0022] The discharge port of the fractionation tower feed heating furnace 3 is connected to the feed port of the atmospheric pressure fractionation tower 4, the discharge port at the bottom of the atmospheric pressure fractionation tower 4 is connected to the vacuum tower feed heating furnace 5 through the fractionation tower bottom pump 8, the discharge port of the vacuum tower feed heating furnace 5 is connected to the vacuum tower 6, and the middle and bottom outlets of the vacuum tower 6 are connected to the rubber oil storage tank through the discharge pump 9. The middle discharge port of the atmospheric pressure fractionation tower 4 is connected to the light diesel oil storage tank through a pipeline, and the top discharge port of the atmospheric pressure fractionation tower 4 is connected to the petroleum naphtha storage tank through a pipeline. The top discharge port of the vacuum tower 6 is connected to the heavy diesel oil storage tank through a customs clearance pipeline. The reaction product after hydrogen separation enters the distillation tower feed heating furnace 3 for heating and then enters the atmospheric pressure distillation tower 4 for atmospheric distillation. Petroleum naphtha is distilled out from the top, light diesel is distilled out from the middle, and the product after the bottom distillation further enters the vacuum tower feed heating furnace 5 for reheating, and then enters the vacuum tower 6 for vacuum distillation. The heavy diesel component is separated at the top of the vacuum tower 6, and rubber oil is obtained in the middle and lower parts of the tower.
[0023] In this embodiment, the Fischer-Tropsch wax raw material is subjected to an isomerization dewaxing reaction device, and then the naphtha and light diesel components are separated by an atmospheric distillation device, and then the environmentally friendly rubber oil is obtained by a vacuum distillation device. The equipment of the entire production process is simplified and the production cost is low. The obtained rubber oil contains no sulfur, no nitrogen, and no aromatics.
[0024] The above content is a further detailed description of the utility model in combination with a specific preferred implementation method. It cannot be determined that the specific implementation methods of the utility model are limited to this. For ordinary technicians in the technical field to which the utility model belongs, they can make several simple deductions or substitutions without departing from the utility model, which should be regarded as belonging to the utility model and the scope of patent protection determined by the submitted claims.
Claims
1. A device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax, characterized in that: The invention comprises an isomerization dewaxing reaction device (1), an air cooler (2), a fractionation tower feed heating furnace (3), a normal pressure fractionation tower (4), a vacuum tower feed heating furnace (5) and a vacuum tower (6); the feed port of the isomerization dewaxing reaction device (1) is connected to a Fischer-Tropsch wax storage tank (7), the discharge port of the isomerization dewaxing reaction device (1) is connected to the air cooler (2), the air cooler (2) is connected to a hydrogen separation circulation system, and the discharge port of the hydrogen separation circulation system is connected to a Fischer-Tropsch wax storage tank (7). The vacuum tower feed heating furnace (5) is connected to a fractionation tower feed heating furnace (3), the discharge port of the fractionation tower feed heating furnace (3) is connected to the feed port of an atmospheric pressure fractionation tower (4), the discharge port at the bottom of the atmospheric pressure fractionation tower (4) is connected to a vacuum tower feed heating furnace (5) via a fractionation tower bottom pump (8), the discharge port of the vacuum tower feed heating furnace (5) is connected to a vacuum tower (6), and the middle and bottom outlets of the vacuum tower (6) are connected to a rubber oil storage tank via a discharge pump (9).
2. The device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax according to claim 1, characterized in that: The Fischer-Tropsch wax storage tank (7) is connected to a Fischer-Tropsch wax heating furnace (11) via a feed pump (10), and the Fischer-Tropsch wax heating furnace (11) is connected to a top feed port of the isomerization dewaxing reaction device (1).
3. The device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax according to claim 1, characterized in that: The middle discharge port of the atmospheric distillation tower (4) is connected to the light diesel oil storage tank via a pipeline, and the top discharge port of the atmospheric distillation tower (4) is connected to the naphtha storage tank via a pipeline.
4. The device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax according to claim 1, characterized in that: The top discharge port of the vacuum tower (6) is connected to the heavy diesel storage tank via a pipeline.
5. The device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax according to claim 1, characterized in that: The hydrogen separation circulation system comprises a hot separator (12) and a cold separator (13), the air cooler (2) is connected to the hot separator (12), the hot separator (12) is connected to the cold separator (13), and the bottom outlet of the hot separator (12) and the bottom outlet of the cold separator (13) are both connected to a fractionation tower feed heating furnace (3).
6. The device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax according to claim 5, characterized in that: The top outlet of the cold separator (13) is connected to a circulating hydrogen inlet separator tank (14), and the circulating hydrogen inlet separator tank (14) is connected to a cold hydrogen inlet of the isomerization dewaxing reaction device (1) via a circulating hydrogen compressor (15).
7. The device for producing environmentally friendly rubber oil based on refined coal-based Fischer-Tropsch wax according to claim 1, characterized in that: The bottom discharge port of the isomerization dewaxing reaction device (1) is connected to the hot phase inlet of the heat exchanger (16), the cold phase inlet of the heat exchanger (16) is connected to the Fischer-Tropsch wax storage tank (7), the hot phase outlet of the heat exchanger (16) is connected to the feed port of the isomerization dewaxing reaction device (1), and the cold phase outlet of the heat exchanger (16) is connected to the air cooler (2).