Liquid coal pitch cooling and granulating device

Abstract

The utility model provides a liquid coal pitch cooling and granulating device which comprises a scraper conveyer, a steel framework, a storage tank and a cooling device, the steel framework is laid along the conveying direction of the scraper conveyer, and the lower end of the storage tank is connected with a residual oil drop spraying block; the inlet pipeline is connected with a water outlet of the circulating water pump, the spiral coil is arranged in the storage tank, and the water return pipeline is connected with the water tank; the spraying pipe is located on the upper portion of the installation space and connected with a nozzle, the bottom of the installation space is further connected with a backflow pipeline, a water return hole is formed in the backflow pipeline, the backflow pipeline is connected with the water tank, and the crushing device is arranged on one side of a discharging port of the scraper conveyor. The high-temperature liquid coal pitch is cooled and sprayed, so that the high-temperature liquid coal pitch can be solidified and crushed into particles through the crushing device, and the problems of transportation danger, environmental pollution and storage danger during secondary utilization of the high-temperature liquid coal pitch can be effectively solved. And earnings are created for secondary utilization of hazardous wastes produced by enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid coal tar pitch treatment, in particular to a liquid coal tar pitch cooling granulation device. Background Art

[0002] In the oil refining and chemical industry, such as in the production of petroleum raw material oil, semi-coke furnace, and coke oven dry distillation, the coal tar produced is heated by a heating furnace of refining equipment. After high-temperature heating and vaporization, the coal tar enters a distillation device to extract and decompose the precipitated compounds. Before solidification, it is high-temperature liquid coal tar pitch (i.e., residual oil), which is toxic and in a liquid state. When reused, it needs to be transported by hazardous chemical oil tank transport vehicles with professional qualifications. During transportation, heating is required to prevent the high-temperature liquid coal tar pitch from solidifying, and there is a risk of fire and explosion. After an accident, it will cause serious environmental pollution. Moreover, the high-temperature liquid coal tar pitch produced during the refining process needs to be temporarily stored in a storage tank to prevent the production equipment from malfunctioning due to solidification, which affects production and brings many disadvantages. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a liquid coal tar pitch cooling granulation device, which granulates the produced high-temperature liquid coal tar pitch, and solves the transportation hazards, environmental pollution, and storage hazards during the secondary utilization of the high-temperature liquid coal tar pitch produced in the oil refining and chemical industry.

[0004] The utility model is realized as follows:

[0005] The utility model provides a liquid coal tar pitch cooling granulation device, which includes a scraper conveyor, a steel structure framework, a storage tank, and a cooling device. The steel structure framework is laid along the conveying direction of the scraper conveyor. The top of the steel structure framework has an installation space. The scraper conveyor is installed in the installation space. The side of the steel structure framework has an upward extending extension part, and the extension part encloses the periphery of the scraper conveyor. The storage tank is arranged above the scraper conveyor and is located on one side of the feed inlet of the scraper conveyor. A residue oil inlet is opened above the storage tank. The lower end of the storage tank extends into the installation space, and a residue oil dripping and spraying block is connected to the lower end of the storage tank;

[0006] The cooling device includes a water tank, a circulating water pump, a cooling pipe, and a spraying pipe. The water inlet of the circulating water pump is connected to the water tank, and the water outlet of the circulating water pump is respectively connected to the cooling pipe and the spraying pipe. The cooling pipe is composed of an inlet pipe, a spiral coil pipe, and a return water pipe. The inlet pipe, the spiral coil pipe, and the return water pipe are connected in sequence. The inlet pipe is connected to the water outlet of the circulating water pump. The spiral coil pipe is arranged in the storage tank, and the return water pipe is connected to the water tank;

[0007] The spray pipe is located at the upper part of the installation space, and the spray pipe is connected with nozzles. A return pipeline is also connected to the bottom of the installation space. A plurality of water return holes are opened at one end of the return pipeline located in the installation space, and the return pipeline is connected with a water tank;

[0008] The liquid coal tar pitch cooling granulation device further includes a crushing device for crushing the solidified residual oil into granular form, and the crushing device is arranged on one side of the discharge port of the scraper conveyor.

[0009] Furthermore, a return conveyor is also included, and the return conveyor is arranged below the outlet of the crushing device.

[0010] Furthermore, the storage tank is connected with an exhaust gas recovery pipeline, and the exhaust gas recovery pipeline is connected to an exhaust gas treatment system.

[0011] Furthermore, the exhaust gas recovery pipeline is also connected with a steam condensation recovery pipeline, and the steam condensation recovery pipeline is connected with the water tank.

[0012] The advantages of the present utility model are as follows: By cooling and spraying the high-temperature liquid coal tar pitch, it can be solidified and crushed into granular form by the crushing device, which can effectively solve the transportation hazards, environmental pollution, and storage hazards during the secondary utilization of the high-temperature liquid coal tar pitch produced in the oil refining and chemical industries. And it creates benefits for the secondary utilization of the hazardous waste produced by enterprises. Description of the Drawings

[0013] The following further describes the present utility model with reference to the drawings in conjunction with embodiments.

[0014] Figure 1 It is a schematic structural diagram of the liquid coal tar pitch cooling granulation device of the present utility model.

[0015] Explanation of the reference numerals in the drawings:

[0016] 1. Scraper conveyor; 2. Steel structure framework; 3. Storage tank; 4. Cooling device; 41. Water tank; 42. Circulation water pump; 43. Cooling pipe; 431. Inlet pipeline; 432. Spiral coil; 433. Return water pipeline; 44. Spray pipe; 5. Installation space; 6. Residual oil inlet; 7. Residual oil droplet spraying block; 8. Nozzle; 9. Return pipeline; 10. Crushing device; 11. Return conveyor; 12. Exhaust gas recovery pipeline; 13. Steam condensation recovery pipeline. Detailed Embodiments

[0017] Please refer to Figure 1, the present utility model provides a liquid coal tar pitch cooling granulation device, which includes a scraper conveyor 1, a steel structure framework 2, a storage tank 3 and a cooling device 4. The steel structure framework 2 is laid along the conveying direction of the scraper conveyor 1. There is an installation space 5 at the top of the steel structure framework 2. The scraper conveyor 1 is installed in the top installation space 5. The side of the steel structure framework has an extension part extending upward. The extension part encloses the periphery of the scraper conveyor. When spraying and cooling, it can prevent water from flowing to the workshop floor. The storage tank 3 is arranged above the scraper conveyor 1; and the storage tank 3 is located on one side of the feed inlet of the scraper conveyor 1. There is a residue oil inlet 6 opened above the storage tank 3. The lower end of the storage tank 3 extends into the installation space 5, and a residue oil dripping and spraying block 7 is connected to the lower end of the storage tank 3; after the residue oil (liquid coal tar pitch) in the storage tank 3 passes through the residue oil dripping and spraying block 7, the residue oil freely falls onto the scraper conveyor 1.

[0018] The cooling device 4 includes a water tank 41, a circulating water pump 42, a cooling pipe 43 and a spray pipe 44. The water inlet of the circulating water pump 42 is connected to the water tank 41. The water outlet of the circulating water pump 42 is respectively connected to the cooling pipe 43 and the spray pipe 44. The cooling pipe 43 is composed of an inlet pipe 431, a spiral coil 432 and a return pipe 433. The inlet pipe 431, the spiral coil 432 and the return pipe 433 are connected in sequence. The inlet pipe 431 is connected to the water outlet of the circulating water pump 42. The spiral coil 432 is arranged in the storage tank 3. The return pipe 433 is connected to the water tank 41; the cooling pipe pre-cools the residue oil in the storage tank to initially cool the liquid residue oil.

[0019] The spray pipe 44 is located in the upper part of the installation space 5, and the spray pipe 44 is connected with a nozzle 8. The bottom of the installation space 5 is also connected with a return pipe 9. A plurality of water return holes are opened at one end of the return pipe 9 located in the installation space 5. The return pipe 9 is connected to the water tank 41; the cooling water is sprayed through the nozzle onto the residue oil dripping on the scraper conveyor to solidify the residue oil.

[0020] The liquid coal tar pitch cooling granulation device further includes a crushing device 10 for crushing the solidified residue oil into granular form. The crushing device 10 is arranged on one side of the discharge outlet of the scraper conveyor 1.

[0021] The residue oil after distillation is sent to the storage tank, enters the installation space through the storage tank. In the installation space, the liquid residue oil becomes solid after spray cooling. The solidified residue oil is conveyed by the scraper conveyor to the crushing device 10. The solid residue oil is crushed into granular form by the crushing device. The granular residue oil is convenient for transportation and storage. And the residue oil cooled into a solid is not easy to volatilize toxic substances, which can reduce environmental pollution.

[0022] Specifically, the liquid coal tar pitch cooling granulation device further includes a return conveyor 11, and the return conveyor 11 is arranged below the outlet of the crushing device 10.

[0023] Specifically, the storage tank 3 is connected with an exhaust gas recovery pipeline 12, and the exhaust gas recovery pipeline 12 is connected to an exhaust gas treatment system (not shown in the figure). The toxic substances volatilized from the liquid coal tar pitch in the storage tank are transported to the exhaust gas treatment system via the exhaust gas recovery pipeline 12 to prevent environmental pollution.

[0024] Specifically, the exhaust gas recovery pipeline 12 is further connected with a steam condensation recovery pipeline 13, and the steam condensation recovery pipeline 13 is connected to the water tank 41.

[0025] A specific application of the present utility model is as follows:

[0026] The residue oil after distillation is sent to the storage tank and enters the scraper conveyor through the residue oil drip spraying block below the storage tank. The circulating water pump transports the cooling water in the water tank to the cooling pipe and the spraying pipe. In the storage tank, the cooling water exchanges heat with the residue oil in the storage tank through the spiral coil pipe, so that the temperature of the residue oil in the storage tank is reduced; the cooling water after heat exchange flows back into the water tank through the return water pipeline.

[0027] In the installation space, the cooling water is sprayed onto the residue oil on the scraper conveyor through the nozzle. After the liquid residue oil is cooled by spraying, it becomes solid. The solidified residue oil is transported to the crushing device 10 by the scraper conveyor. The solid residue oil is crushed into granular by the crushing device. The granular residue oil is convenient for transportation and storage. And the residue oil cooled into a solid is not easy to volatilize toxic substances, which can reduce environmental pollution.

[0028] The sprayed cooling water is collected in the return pipeline through the return water holes and flows back into the water tank through the return pipeline.

[0029] By cooling and spraying the high-temperature liquid coal tar pitch (residue oil), it can be solidified and crushed into granular by the crushing device, realizing safe transportation and safe storage. It can effectively solve the transportation hazards, environmental pollution, and storage hazards during the secondary utilization of the high-temperature liquid coal tar pitch produced in the oil refining and chemical industries. And it can create benefits for the secondary utilization of the hazardous waste produced by enterprises.

[0030] Although the specific embodiments of the present utility model are described above, those skilled in the art should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present utility model. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present utility model should be covered by the scope protected by the claims of the present utility model.

Claims

1. A liquid coal tar cooling and granulation device, characterized in that: It includes a scraper conveyor, a steel frame, a storage tank and a cooling device, wherein the steel frame is laid along the conveying direction of the scraper conveyor, the top of the steel frame has an installation space, the scraper conveyor is installed in the installation space, the side of the steel frame has an extension portion extending upward, the extension portion closes the periphery of the scraper conveyor, the storage tank is arranged above the scraper conveyor, and the storage tank is located on one side of the scraper conveyor feed port, a residual oil inlet is opened above the storage tank, the lower end of the storage tank extends into the installation space, and the lower end of the storage tank is connected to a residual oil droplet spray block; The cooling device includes a water tank, a circulating water pump, a cooling pipe and a spray pipe, the water inlet of the circulating water pump is connected to the water tank, the water outlet of the circulating water pump is connected to the cooling pipe and the spray pipe respectively, the cooling pipe is composed of an inlet pipe, a spiral coil and a return pipe, the inlet pipe, the spiral coil and the return pipe are connected in sequence, the inlet pipe is connected to the water outlet of the circulating water pump, the spiral coil is arranged in a storage tank, and the return pipe is connected to the water tank; The spray pipe is located at the upper part of the installation space, and the spray pipe is connected to a nozzle. The bottom of the installation space is also connected to a return pipe, and a plurality of return holes are opened at one end of the return pipe located in the installation space. The return pipe is connected to a water tank; The liquid coal tar cooling and granulating device also includes a crushing device for crushing the solidified residual oil into particles, and the crushing device is arranged on one side of the discharge port of the scraper conveyor.

2. A liquid coal tar pitch cooling and granulation device as claimed in claim 1, characterized in that: The utility model also comprises a return material conveyor, and the return material conveyor is arranged below the outlet of the crushing device.

3. A liquid coal tar pitch cooling and granulation device as claimed in claim 1, characterized in that: The storage tank is connected to an exhaust gas recovery pipeline, and the exhaust gas recovery pipeline is connected to an exhaust gas treatment system.

4. A liquid coal tar pitch cooling and granulation device as claimed in claim 3, characterized in that: The exhaust gas recovery pipeline is also connected to a steam condensation recovery pipeline, and the steam condensation recovery pipeline is connected to a water tank.

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