A production equipment for special carbon materials

Abstract

The present invention discloses a production equipment of special carbon materials, which at least includes a feeding system, a heating furnace, a flash tower, an oxidation tower, a stirring and blending tower and a coking reactor; the feeding system is connected to the first inlet of the heating furnace through a pipeline along the material flow direction, the first outlet of the heating furnace is connected to the inlet of the flash tower through a pipeline, the heavy phase outlet of the flash tower is connected to the inlet of the oxidation tower through a pipeline, the outlet of the oxidation tower is connected to the inlet of the stirring and blending tower together with the light phase outlet of the flash tower, the outlet of the stirring and blending tower is connected to the second inlet of the heating furnace, and the second outlet of the heating furnace is connected to the inlet of the coking reactor. The production equipment of the present invention is simple to operate, can effectively increase the yield of special carbon materials by 8-26%, improve the physical and chemical properties of special carbon materials, and at the same time, the method is suitable for the preparation of different materials and can be widely used in cracking and condensation reactions.

Description

Technical Field

[0001] The invention relates to the technical field of production of novel special carbon materials, and in particular to production equipment of novel special carbon materials. Background Art

[0002] Special carbon materials are important materials with small thermal expansion coefficient, low resistivity, strong heat shock resistance and oxidation resistance. Special carbon materials are divided into two categories according to the different raw materials, one is oil-based special carbon materials; the other is coal-based special carbon materials. The research process mainly focuses on controlling factors such as raw material pretreatment, polymerization time, temperature and pressure.

[0003] Cheng Xianglin and others used waste polystyrene and ethylene heavy oil as raw materials and adopted the co-carbonization method to produce special carbon materials. Studies have shown that more alkyl structures are generated in the intermediate phase asphalt. The amount of alkyl structure directly determines the physical and chemical properties of special carbon materials, such as the directional optical structure and thermal expansion coefficient. The increase in alkyl structure makes the thermal expansion coefficient gradually approach that of high-quality special carbon materials. The increase in viscosity of the co-carbonization system of waste polystyrene and heavy oil promotes the directional arrangement and growth of the intermediate phase. In addition, the yield of existing special carbon materials is about 24%, and the production efficiency is low. How to improve the yield of special carbon materials is a problem that needs to be solved today. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of production equipment for special carbon materials in view of the low production efficiency of special carbon materials in the prior art.

[0005] The technical solution adopted to achieve the purpose of the present invention is:

[0006] A production equipment for a new type of special carbon material, comprising at least a feeding system, a heating furnace, a flash tower, an oxidation tower, a stirring and blending tower and a coking reactor;

[0007] Along the material flow direction, the feeding system is connected to the first inlet of the heating furnace through a pipeline, the first outlet of the heating furnace is connected to the inlet of the flash tower through a pipeline, the heavy phase outlet of the flash tower is connected to the inlet of the oxidation tower through a pipeline, the outlet of the oxidation tower and the light phase outlet of the flash tower are connected to the inlet of the stirring and blending tower, the outlet of the stirring and blending tower is connected to the second inlet of the heating furnace, and the second outlet of the heating furnace is connected to the inlet of the coking reactor.

[0008] In the above technical solution, the production equipment also includes a storage tank;

[0009] The inlet of the storage tank is connected to the light phase outlet of the flash tower, and the outlet of the storage tank is connected to the inlet of the stirring and blending tower together with the outlet of the oxidation tower.

[0010] In the above technical solution, the production equipment also includes an oil and gas recovery system, and the oil and gas recovery system is connected to the top of the coking reactor.

[0011] In the above technical solution, the oil and gas recovery system includes a washing tower and an atmospheric distillation tower. The top of the coking reactor is connected to the washing tower, which is connected to the atmospheric distillation tower. The top of the washing tower is connected to a cooling water tank.

[0012] In the above technical solution, the coking reactor is a vertical reactor or a horizontal reactor.

[0013] In the above technical solution, the coking reactor is connected to a high-temperature oil and gas transmission pipeline, and the lower part of the washing tower is connected to a washing heavy oil collection pipeline.

[0014] In the above technical solution, the atmospheric distillation tower is connected to a gasoline collection pipeline, a diesel collection pipeline and a wax oil collection pipeline.

[0015] In the above technical solution, the production equipment is a single-path process or a dual-path process.

[0016] In the above technical solution, the outlet of the oxidation tower is connected to a liquid level meter.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The production equipment of the present invention is easy to operate, can effectively increase the yield of special carbon materials by 8-26%, and improve the physical and chemical properties of special carbon materials. At the same time, the method is suitable for the preparation of different materials and can be widely used in cracking and condensation reactions, including but not limited to coal chemical industry and petrochemical industry.

[0019] 2. The equipment of the present invention is provided with a stirring and blending tower, which can effectively prevent the high viscosity of the raw materials after oxidation from clogging the equipment. At the same time, the waste gas generated during the oxidation process is introduced into the reaction furnace for incineration, and no excess waste gas is generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a schematic diagram of the production equipment of the new special carbon material of the present invention.

[0021] In the figure: 1-heating furnace, 2-flash tower, 3-oxidation tower, 4-storage tank, 5-stirring and blending tower, 6-new special carbon material collection pipeline, 7-coking reactor, 8-washing tower, 9-normal pressure fractionation tower, 10-water injection or steam injection pipeline, 11-gasoline collection pipeline, 12-diesel collection pipeline, 13-wax oil collection pipeline, 14-first feed pipeline, 15-heavy phase feed pipeline, 16-flash tower light phase discharge pipeline, 17-first light phase mixing pipeline, 18-oxidation heavy phase mixing pipeline, 19-first mixing pipeline. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. 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.

[0023] Example 1

[0024] A new type of production equipment for special carbon materials, such as Figure 1 As shown, it includes a feeding system, a heating furnace 1, a flash tower 2, a storage tank 4, an oxidation tower 3, a stirring and blending tower 5, a coking reactor 7 and an oil and gas recovery system;

[0025] Along the material flow direction, the feeding system is connected to the first inlet of the heating furnace 1 through a first feeding pipe 14. The heating furnace 1 includes a convection section and a radiation section. The convection section and the heating section are connected. The unadulterated full-fraction ethylene heavy oil enters the convection section and the radiation section in sequence for heat exchange. The first outlet of the heating furnace 1 is connected to the inlet of the flash tower 2 through a pipeline. The heavy phase outlet of the flash tower 2 is connected to the inlet of the oxidation tower 3 through a heavy phase feeding pipe 15. The heavy phase component is oxidized in the oxidation tower 3 to obtain an oxidized heavy phase component. The oxidant is oxygen or air. The oxidation tower 3 adopts bottom-in and top-out, and the material at the bottom of the oxidation tower goes to the stirring tank.

[0026] The light phase outlet of the flash tower 2 is connected to the storage tank 4 through the flash tower light phase discharge pipe 16, the outlet of the oxidation tower 3 is connected to the oxidation heavy phase mixing pipe 18, the outlet of the storage tank 4 is connected to the first light phase mixing pipe 17, the oxidation heavy phase mixing pipe 18 and the first light phase mixing pipe 17 are connected together to the first mixing pipe 19, the first mixing pipe 19 is connected to the inlet of the stirring and blending tower 5, the oxidation heavy phase component and part of the light phase component are preliminarily mixed to prevent the oxidation heavy phase component from clogging the pipeline due to excessive viscosity, the oxidation heavy phase component and the light phase component are blended again in the stirring and blending tower 5 to reduce the viscosity to obtain oxidation unadulterated full-fraction ethylene heavy oil.

[0027] The outlet of the stirring and blending tower 5 is connected to the second inlet of the heating furnace 1 through an oxidized undoped whole-fraction ethylene heavy oil delivery pipeline. Specifically, the oxidized undoped whole-fraction ethylene heavy oil delivery pipeline is connected with a high-pressure delivery pump and a water injection or steam injection pipeline 10. After the oxidized undoped whole-fraction ethylene heavy oil is pressurized by the high-pressure delivery pump, the water injection or steam injection pipeline 10 injects high-pressure water or high-pressure steam into the pressurized oxidized undoped whole-fraction ethylene heavy oil, and then the undoped whole-fraction ethylene heavy oil enters the radiation section for heating. The second outlet of the heating furnace 1 is connected to the inlet of the coking reactor 7, and the oxidized undoped whole-fraction ethylene heavy oil is cracked. The coking reactor 7 is connected with a new type of special carbon material collection pipeline 6.

[0028] Example 2

[0029] Based on Example 1, the equipment further comprises an oil and gas recovery system, and the oil and gas recovery system is connected to the top of the coking reactor.

[0030] The oil and gas recovery system includes a washing tower 8 and an atmospheric distillation tower 9. The top of the coking reactor is connected to the washing tower 8, and the washing tower 8 is connected to the atmospheric distillation tower 9. The top of the washing tower 8 is connected to a cooling water tank. The coking reactor can be a vertical or horizontal reactor. Specifically, the upper part of the coking reactor is a high-temperature oil and gas transmission pipeline, which transmits the high-temperature oil and gas to the washing tower 8. The lower part of the washing tower 8 recovers the washed heavy oil through the washing heavy oil collection pipeline. The oil and gas at the top of the washing tower 8 are transported to the atmospheric distillation tower 9 through the washing oil and gas transmission pipeline. At the upper part of the atmospheric distillation tower 9, gasoline is recovered through the gasoline collection pipeline 11, diesel is recovered through the diesel collection pipeline 12, and wax oil is recovered through the wax oil collection pipeline 13. The diesel can be used to blend the oxidized unadulterated full-fraction ethylene heavy oil.

[0031] Example 3

[0032] On the basis of Example 1-2, when the feed amount of undoped whole fraction ethylene heavy oil is less than 30t, the equipment adopts a single-path process, and when the feed amount of undoped whole fraction ethylene heavy oil is 30-100t, the equipment adopts a dual-path process.

[0033] At the same time, in order to better control the viscosity of the oxidized unadulterated full-fraction ethylene heavy oil, a liquid level meter is connected to the outlet of the oxidation tower 3 to control the flow rate of the oxidized heavy phase component.

[0034] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0035] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A production equipment for special carbon materials, characterized in that: It at least includes a feeding system, a heating furnace, a flash tower, an oxidation tower, a stirring and blending tower and a coking reactor; the feeding system is connected to the first inlet of the heating furnace through a pipeline along the material flow direction, the first outlet of the heating furnace is connected to the inlet of the flash tower through a pipeline, the heavy phase outlet of the flash tower is connected to the inlet of the oxidation tower through a pipeline, the outlet of the oxidation tower and the light phase outlet of the flash tower are connected to the inlet of the stirring and blending tower, the outlet of the stirring and blending tower is connected to the second inlet of the heating furnace, and the second outlet of the heating furnace is connected to the inlet of the coking reactor; it also includes a storage tank; the inlet of the storage tank is connected to the light phase outlet of the flash tower, the outlet of the storage tank and the outlet of the oxidation tower are connected to the inlet of the stirring and blending tower; it also includes an oil and gas recovery system, and the oil and gas recovery system is connected to the top of the coking reactor.

2. The production equipment according to claim 1, characterized in that: The oil and gas recovery system comprises a washing tower and a normal pressure fractionation tower. The top of the coking reactor is connected to the washing tower, the washing tower is connected to the normal pressure fractionation tower, and the top of the washing tower is connected to a cooling water tank.

3. The production equipment according to claim 2, characterized in that: The coking reactor is a vertical reactor or a horizontal reactor.

4. The production equipment according to claim 2, characterized in that: The coking reactor is connected to a high-temperature oil and gas transmission pipeline, and the lower part of the washing tower is connected to a washing heavy oil collection pipeline.

5. The production equipment according to claim 2, characterized in that: The atmospheric distillation tower is connected with a gasoline collection pipeline, a diesel collection pipeline and a wax oil collection pipeline.

6. The production equipment according to claim 1, characterized in that: The production equipment is a single-path process or a dual-path process.

7. The production equipment according to claim 1, characterized in that: The outlet of the oxidation tower is connected with a liquid level meter.

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