Device for cooling and recovering asphalt oil by adopting refrigerant

Abstract

The utility model discloses a device for cooling and recovering asphalt oil by adopting a refrigerant, which is characterized in that two shells are arranged at the upper part of a bottom plate, one sides of the two shells are communicated through a communicating pipe, two ends of the communicating pipe are respectively provided with a second valve, and cooling boxes are fixedly arranged at the upper parts of the two shells; one sides of the two cooling boxes are communicated through a conveying pipe, and the two ends of the conveying pipe are each provided with a first valve. Oil leakage holes are formed in the bottoms of the inner walls of the cooling box, a cooling pipe is arranged in the cooling box, a heat exchange plate is arranged on one side of the cooling pipe, a liquid storage box is arranged on one side of the cooling box, and refrigeration equipment is arranged on the upper portion of the liquid storage box. According to the utility model, asphalt oil in cooled flue gas is condensed into a liquid state by using a refrigerant for recovery, so that the recovery efficiency is ensured, the fire risk is reduced, the function of cleaning without shutdown is realized, the utilization rate of resources is favorably improved, the environmental pollution is reduced, and the production efficiency and the economic benefit of enterprises are also favorably improved.

Description

Technical Field

[0001] The utility model belongs to the field of asphalt oil recovery devices, in particular to a device for recovering asphalt oil by cooling with a refrigerant. Background Art

[0002] In the current industrial production process, especially in the high-temperature roasting of asphalt production and carbon raw materials, the roasting flue gas will inevitably contain a large amount of asphalt tar. These asphalt tars are not only rich in economic value, but also attract much attention due to their potential environmental pollution. Therefore, how to efficiently recycle these asphalt tars to reduce environmental pollution and improve resource utilization has become an urgent problem to be solved.

[0003] At present, the industry mainly relies on the method of combining electric tar collector with wet electric precipitator for the recovery of asphalt tar. However, this method has exposed a series of problems in practical application.

[0004] First, there is a certain fire risk during the operation of the electric tar precipitator. As asphalt tar is flammable, the electric tar precipitator is very likely to cause a fire accident due to electrical failure or improper operation during operation, especially under high temperature and high pressure environment. This risk not only threatens the life safety of the operator, but also poses a great threat to the enterprise and the surrounding environment.

[0005] Secondly, the recovery efficiency of the electric tar precipitator is restricted by many factors. Changes in environmental factors such as flue gas temperature, humidity, asphalt tar concentration, etc. will have a significant impact on the recovery efficiency of the electric tar precipitator. This instability makes it difficult to ensure the recovery effect, and may even lead to waste of resources and secondary pollution of the environment.

[0006] In addition, existing asphalt oil recovery equipment generally lacks the function of non-stop cleaning. As the equipment runs for a long time, tar gradually accumulates inside the equipment, which not only affects the normal operation of the equipment, but also increases the risk of fire. However, traditional cleaning methods often require shutdown, which not only affects production efficiency, but also increases the operating costs of enterprises. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a device for recovering asphalt oil by cooling with a refrigerant, which reduces the risk of fire while ensuring the recovery efficiency and realizes the function of cleaning without stopping the machine, thus helping to improve the utilization rate of resources, reduce environmental pollution, and also help to improve the production efficiency and economic benefits of the enterprise.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A device for recovering asphalt oil by cooling with a refrigerant comprises a bottom plate, two shells are installed on the upper part of the bottom plate, one side of the two shells is connected by a connecting pipe, two ends of the connecting pipe are respectively provided with a second valve, the middle part of the connecting pipe is connected with an oil drain pipe, the upper part of the two shells is fixedly installed with a cooling box, the upper part of the cooling box is provided with a top cover, the top cover and the cooling box are both provided with a fixing block, the top cover and the cooling box are detachably connected by a threaded rod, one side of the two cooling boxes is connected by a delivery pipe, two ends of the delivery pipe are respectively provided with a first valve, and the other side of the two cooling boxes is respectively provided with a first valve. An exhaust pipe is provided; a roasting tank is provided on the upper part of the bottom plate, an air pump is provided on the upper part of the roasting tank, an air inlet pipe of the air pump is connected to the roasting tank, and an air outlet pipe of the air pump is connected to the delivery pipe; oil leakage holes are provided at the bottom of the inner wall of the cooling box, a cooling pipe is provided inside the cooling box, a heat exchange plate is provided on one side of the cooling pipe, a liquid storage tank is provided on one side of the cooling box, a refrigerant is stored inside the liquid storage tank, the refrigerant adopts one of Freon refrigerant, inorganic compound refrigerant or hydrocarbon refrigerant, a refrigeration device is provided on the upper part of the liquid storage tank, a liquid pump is provided on one side of the liquid storage tank, and a liquid outlet pipe of the liquid pump is connected to the cooling pipe.

[0010] Furthermore, two filter plates are arranged on the upper parts of the two shells.

[0011] Furthermore, a plurality of baffles are arranged inside the cooling box, one end of the baffle is fixedly connected to the inner wall of one side of the cooling box, and a flow gap is arranged between the other end and the inner wall of the other side of the cooling box, and the flow gaps of adjacent baffles are staggered left and right.

[0012] Furthermore, a primary filtering device is provided on the bottom plate, and the primary filtering device adopts a bag filter dust collector or a cyclone dust collector. The air inlet of the primary filtering device is connected to the air outlet pipe, and the air outlet of the primary filtering device is connected to the conveying pipe.

[0013] Furthermore, a separator is provided on one side of the base plate, and the separator adopts a gravity separator or a centrifugal separator; an oil pump is provided on one side of the separator, the oil inlet pipe of the oil pump is connected with the oil discharge pipe on one side of the outer shell, the oil outlet pipe of the oil pump is connected with the separator, a sewage pipe is provided on one side of the separator, and an asphalt oil pipe is provided on the upper part of the sewage pipe.

[0014] Furthermore, the bottom of the cooling box is arranged inclined.

[0015] The beneficial effects of the utility model are:

[0016] 1) The utility model utilizes refrigerant to condense the asphalt oil in the flue gas after cooling into liquid for recovery, thereby reducing the risk of fire while ensuring recovery efficiency, and realizing the function of non-stop cleaning, which helps to improve resource utilization, reduce environmental pollution, and also helps to improve the production efficiency and economic benefits of the enterprise.

[0017] 2) By arranging filter plates on the upper part of the shell, impurities contained in the asphalt oil are filtered, thereby improving the quality of the asphalt oil.

[0018] 3) A plurality of baffles are arranged in a staggered manner on the left and right inside the cooling box, which prolongs the cooling time of the flue gas in the cooling box and improves the cooling effect of the flue gas in the cooling box.

[0019] 4) By setting up a primary filtering device, the flue gas from high-temperature roasting is initially filtered to prevent impurities in the flue gas from clogging the pipe during long-term use.

[0020] 5) By setting up a separator, the asphalt oil is separated into oil and water, which further improves the purity of the asphalt oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 It is a schematic diagram of the structure of the utility model.

[0022] Attached Figure 2 It is a schematic diagram of the installation position of the first valve in the utility model.

[0023] Attached Figure 3 It is a schematic diagram of the installation position of the second valve in the utility model.

[0024] Attached Figure 4 It is a schematic diagram of the internal structure of the outer shell and the cooling box in the utility model.

[0025] In the figure, 1, bottom plate; 2, roasting tank; 3, air outlet pipe; 4, air pump; 5, primary filtering device; 6, delivery pipe; 7, first valve; 8, outer shell; 9, filter plate; 10, cooling box; 11, oil leakage hole; 12, baffle; 13, heat exchange plate; 14, cooling pipe; 15, liquid pump; 16, liquid storage tank; 17, refrigeration equipment; 18, top cover; 19, fixing block; 20, threaded rod; 21, connecting pipe; 22, second valve; 23, oil pump; 24, separator; 25, sewage pipe; 26, asphalt oil pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the attached Figure 1-Figure 4 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 therefore should not be understood as a limitation on the present invention.

[0028] like Figure 1-3 As shown, a device for recovering asphalt oil by cooling with a refrigerant comprises a bottom plate 1, two shells 8 are installed on the upper part of the bottom plate 1, one side of the two shells 8 are connected by a connecting pipe 21, two ends of the connecting pipe 21 are respectively provided with a second valve 22, the middle part of the connecting pipe 21 is connected with an oil drain pipe, a cooling box 10 is fixedly installed on the upper part of the two shells 8, a top cover 18 is provided on the upper part of the cooling box 10, a fixing block 19 is provided on the top cover 18 and the cooling box 10, the top cover 18 and the cooling box 10 are detachably connected by a threaded rod 20, one side of the two cooling boxes 10 are connected by a delivery pipe 6, two ends of the delivery pipe 6 are respectively provided with a first valve 7, and the other side of the two cooling boxes 10 are respectively provided with an exhaust pipe (not shown in the figure); a roasting tank 2 is provided on the upper part of the bottom plate 1, an air pump 4 is provided on the upper part of the roasting tank 2, an air inlet pipe of the air pump 4 is connected with the roasting tank 2, and an air outlet pipe 3 of the air pump 4 is connected with the delivery pipe 6; Figure 3 As shown, the inner wall bottom of the cooling box 10 is provided with an oil leakage hole 11, the cooling box 10 is provided with a cooling pipe 14 inside, a heat exchange plate 13 is provided on one side of the cooling pipe 14, a liquid storage tank 16 is provided on one side of the cooling box 10, and the refrigerant is stored inside the liquid storage tank 16. The refrigerant adopts one of Freon refrigerant, inorganic compound refrigerant or hydrocarbon refrigerant. A refrigeration device 17 is provided on the upper part of the liquid storage tank 16, and a liquid pump 15 is provided on one side of the liquid storage tank 16. The liquid outlet pipe of the liquid pump 15 is connected to the cooling pipe 14.

[0029] like Figure 4 As shown, two filter plates 9 are disposed on the upper parts of the two shells 8, and the filter plates 9 filter the impurities contained in the asphalt oil, thereby improving the quality of the asphalt oil.

[0030] like Figure 4 As shown, a plurality of baffles 12 are provided inside the cooling box 10, one end of the baffle 12 is fixedly connected to the inner wall of one side of the cooling box 10, and a flow gap is provided between the other end and the inner wall of the other side of the cooling box 10, and the flow gaps of adjacent baffles 12 are staggered left and right; the staggered baffles 12 extend the cooling time of the flue gas in the cooling box 10 and improve the cooling effect of the flue gas in the cooling box 10.

[0031] like Figure 1 , Figure 2 As shown, a primary filtering device 5 is also provided on the bottom plate 1. The primary filtering device 5 adopts a filter bag dust collector or a cyclone dust collector. The air inlet of the primary filtering device 5 is connected with the air outlet pipe 3, and the air outlet of the primary filtering device 5 is connected with the conveying pipe 6. The primary filtering device 5 performs preliminary filtration on the flue gas of high-temperature roasting to prevent impurities in the flue gas from clogging the pipe during long-term use.

[0032] like Figure 3 As shown, a separator 24 is provided on one side of the bottom plate 1. The separator 24 adopts a gravity separator 24 or a centrifugal separator 24. In the present embodiment, the separator 24 adopts a centrifugal separator 24, which improves the efficiency of oil-water separation. An oil pump 23 is provided on one side of the separator 24. The oil inlet pipe of the oil pump 23 is connected with the oil discharge pipe on one side of the housing 8, and the oil outlet pipe of the oil pump 23 is connected with the separator 24. A sewage pipe 25 is provided on one side of the separator 24, and an asphalt oil pipe 26 is provided on the upper part of the sewage pipe 25. The separator 24 further improves the purity of the asphalt oil. After the asphalt oil is separated from the sewage, the sewage is discharged through the sewage pipe 25, and the asphalt oil is discharged through the upper asphalt oil pipe 26.

[0033] The bottom of the cooling box 10 is arranged tilted, so that the asphalt oil converges to one side of the cooling box 10 , thereby preventing the asphalt oil from accumulating at the bottom of the cooling box 10 .

[0034] Working principle: During use, when it is necessary to recover the asphalt oil in the roasting flue gas, open the first valve 7 and the second valve 22 of one of the cooling boxes 10, and close the first valve 7 and the second valve 22 of the other cooling box 10. Under the operation of the staff, the roasting flue gas generated by the roasting tank 2 is transported to the inside of the primary filtering device 5 under the action of the air pump 4 for preliminary filtration to filter the impurities in the flue gas. After the filtration is completed, the flue gas reaches the inside of one of the cooling boxes 10 (the cooling box 10 with the first valve 7 and the second valve 22 opened) through the conveying pipe 6, and then the refrigerant in the liquid storage tank 16 is sucked out by the liquid pump 15, so that it circulates in the cooling pipe 14, and under the action of the heat exchange plate 13, the refrigerant in the liquid storage tank 16 is sucked out. The heat in the roasting flue gas is absorbed, and then the absorbed heat is conducted to the refrigerant, and then the refrigerant that absorbs the heat is sent back to the liquid storage tank 16 through the cooling pipe 14. At the same time, under the action of the refrigeration equipment 17, the refrigerant is cooled and dissipated, so that the refrigerant can continue to circulate to cool the roasting flue gas. When the refrigerant cools the flue gas, the flue gas moves forward inside the cooling box 10, and under the action of the baffle 12, the flue gas can move slowly inside the cooling box 10, thereby improving the cooling effect of the flue gas. After cooling, the asphalt oil in the flue gas is condensed into liquid. This structure not only extracts and recovers the asphalt oil, but also improves safety, avoids the occurrence of fire accidents, and better protects the personal safety of workers.

[0035] In addition, since the bottom of the cooling box 10 is arranged at an angle, the asphalt oil will flow to one side of the cooling box 10 and pass through the oil leakage hole 11 into the interior of the outer shell 8, wherein the cooled flue gas can be discharged from the exhaust pipe on one side of the outer wall of the cooling box 10, and sent to the exhaust gas treatment device through an external pipeline for purification and filtration. At the same time, under the action of the filter plate 9, the impurities contained in the asphalt oil can be filtered, thereby improving the quality of the asphalt oil. Then, under the action of the oil pump 23, the asphalt oil inside the outer shell 8 is sucked out and sent to the interior of the separator 24. By utilizing the different densities of asphalt oil, water and impurities under the action of centrifugal force, they are separated through a high-speed rotating centrifugal process. The asphalt oil will be in the upper layer, and the water and impurities will settle to the bottom, thereby realizing the separation of impurities or moisture in the asphalt oil, and further improving the quality of the asphalt oil.

[0036] After the separation, the asphalt oil will be sent out from one of the pipes and collected by a collecting device, and water and impurities will be sent from another pipe to a sewage treatment device for purification and then discharged. When a cooling box 10 recovers the asphalt oil in the roasting flue gas, the top cover 18 on the top of the other cooling box 10 can be removed under the operation of the staff, and the residual asphalt oil or impurities on the surface of the heat exchange plate 13, the bottom wall of the cooling box 10 and the baffle 12 can be cleaned with a cleaning tool, thereby improving the efficiency of asphalt recovery, and with the cooperation of the first valve 7 and the second valve 22, the cooling box 10 can be switched to achieve non-stop cleaning of the recovery device, thereby achieving the goal of not affecting the asphalt oil recovery efficiency while also being able to clean the parts inside the cooling box 10, greatly improving the practicability of the equipment.

[0037] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A device for recovering asphalt oil by cooling with a refrigerant, comprising a bottom plate, characterized in that: Two shells are installed on the upper part of the bottom plate, one side of the two shells is connected by a connecting pipe, two ends of the connecting pipe are respectively provided with a second valve, the middle part of the connecting pipe is connected with an oil drain pipe, the upper part of the two shells is fixedly installed with a cooling box, the upper part of the cooling box is provided with a top cover, the top cover and the cooling box are provided with a fixing block, the top cover and the cooling box are detachably connected by a threaded rod, one side of the two cooling boxes is connected by a delivery pipe, two ends of the delivery pipe are respectively provided with a first valve, and the other side of the two cooling boxes is respectively provided with an exhaust pipe; a roasting tank is provided on the upper part of the bottom plate, an air pump is provided on the upper part of the roasting tank, the air inlet pipe of the air pump is connected with the roasting tank, and the air outlet pipe of the air pump is connected with the delivery pipe; oil leakage holes are opened at the bottom of the inner wall of the cooling box, a cooling pipe is provided inside the cooling box, a heat exchange plate is provided on one side of the cooling pipe, a liquid storage tank is provided on one side of the cooling box, and the refrigerant is stored inside the liquid storage tank, a refrigeration device is provided on the upper part of the liquid storage tank, a liquid pump is provided on one side of the liquid storage tank, and the liquid outlet pipe of the liquid pump is connected with the cooling pipe.

2. The device for recovering asphalt oil by cooling with a refrigerant according to claim 1, characterized in that: Two filter plates are arranged on the upper parts of the two shells.

3. The device for recovering asphalt oil by cooling with a refrigerant according to claim 1, characterized in that: The cooling box is provided with a plurality of baffles inside, one end of the baffle is fixedly connected to the inner wall of one side of the cooling box, and a flow gap is provided between the other end and the inner wall of the other side of the cooling box, and the flow gaps of adjacent baffles are staggered left and right.

4. The device for recovering asphalt oil by cooling with a refrigerant according to claim 1, characterized in that: The bottom plate is also provided with a primary filtering device, which adopts a filter bag dust collector or a cyclone dust collector. The air inlet of the primary filtering device is connected with the air outlet pipe, and the air outlet of the primary filtering device is connected with the conveying pipe.

5. The device for recovering asphalt oil by cooling with a refrigerant according to claim 1, characterized in that: A separator is provided on one side of the bottom plate, and the separator adopts a gravity separator or a centrifugal separator; an oil pump is provided on one side of the separator, the oil inlet pipe of the oil pump is connected with the oil discharge pipe on one side of the shell, the oil outlet pipe of the oil pump is connected with the separator, a sewage pipe is provided on one side of the separator, and an asphalt oil pipe is provided on the upper part of the sewage pipe.

6. The device for recovering asphalt oil by cooling with a refrigerant according to any one of claims 1 to 5, characterized in that: The bottom of the cooling box is arranged inclined.

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