Modified asphalt loading arm

Abstract

The utility model discloses a loading arm for modified asphalt, which relates to the technical field of chemical unloading devices and comprises a stand column, an inner pipe and an outer pipe are fixed on one side of the stand column, a vertical pipe is mounted at the output end of the outer pipe, a first jacketed pipe and a first conducting pipe are arranged on the outer wall of the inner pipe, and a second jacketed pipe and a second conducting pipe are arranged on the outer wall of the outer pipe. The first jacketed pipe is communicated with a heat transfer medium input pipeline, a first pipeline is arranged between the first jacketed pipe and the second jacketed pipe, the output end of the second conduction pipe is connected with the input end of the first conduction pipe through a second pipeline, and the output end of the first conduction pipe is connected with a heat transfer medium output pipeline; a sealing cap is installed on the vertical pipe, an asphalt smoke collecting pipeline is connected to the sealing cap, and the output end of the smoke collecting pipeline is connected with a gas processing device. According to the modified asphalt loading arm, the technical problems that an existing loading arm is low in loading and unloading efficiency and cannot treat asphalt flue gas are solved, the loading efficiency of modified asphalt is improved, and the asphalt flue gas can be collected and treated in time.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical unloading devices, in particular to a modified asphalt loading crane pipe. Background Art

[0002] With the continuous development of road construction technology, modified asphalt, as a high-performance road construction material, has been widely used in high-grade highways, airport runways, waterproofing projects and other fields. Modified asphalt significantly improves its key properties such as high temperature stability, low temperature crack resistance, aging resistance and fatigue resistance by adding modifiers such as rubber, resin and plastic, thus meeting the high requirements of modern road construction for material performance.

[0003] The existing method of loading asphalt is usually loading with a crane pipe. As the viscosity of modified asphalt changes significantly with the change of ambient temperature. When the temperature drops, the viscosity of asphalt increases and the fluidity decreases, which not only makes loading and unloading difficult, but may also cause blockage. In order to maintain the fluidity of asphalt during loading and unloading, it is usually necessary to heat it. However, traditional heating methods often have problems such as high energy consumption, uneven heating, and inaccurate temperature control, which are difficult to meet the actual needs of loading and unloading modified asphalt.

[0004] In addition, asphalt fumes are generated during the loading process of modified asphalt. These fumes contain volatile organic compounds (such as oil gas, benzene compounds) and other harmful gases (such as hydrogen sulfide). The hydrocarbon fumes emitted are irritating to human skin and mucous membranes. Long-term exposure to such an environment will have adverse effects on the health of operators.

[0005] Therefore, how to provide a modified asphalt loading crane pipe that can reduce the emission of harmful gases while ensuring the efficiency of asphalt loading and unloading is a technical problem that technicians in this field currently need to solve. Utility Model Content

[0006] The utility model aims to provide a modified asphalt loading crane pipe, which solves the technical problems that the existing loading crane pipe has low loading and unloading efficiency and cannot process asphalt fume.

[0007] To achieve the above-mentioned purpose, the utility model provides a modified asphalt loading crane pipe, comprising a column, an inner tube is fixed on one side of the column, the output end of the inner tube is connected to the outer tube through an elbow and a universal joint, a vertical tube is rotatably installed on the output end of the outer tube, a first jacket tube is provided on the outer wall of the inner tube, and a second jacket tube is provided on the outer wall of the outer tube, a heat transfer medium can be input into the cavity of the first jacket tube and the cavity of the second jacket tube, and the heat transfer medium is used to adjust the temperature of the modified asphalt in the inner tube and the outer tube, a first conducting tube is provided on the outer wall of the first jacket tube, a second conducting tube is provided on the outer wall of the second jacket tube, one end of the second conducting tube is connected to the output end of the second jacket tube, the input end of the first jacket tube is connected to the heat transfer medium input pipeline, a first pipeline is provided between the output end of the first jacket tube and the input end of the second jacket tube, the output end of the second conducting tube is connected to the input end of the first conducting tube through the second pipeline, and the output end of the first conducting tube is connected to the heat transfer medium output pipeline;

[0008] A sealing cap is installed on the vertical pipe, and an asphalt fume collection pipeline is connected to the sealing cap. The output end of the fume collection pipeline is connected to the gas processing device.

[0009] Preferably, the gas processing device comprises:

[0010] A cooling liquid collecting tower, the top of which is connected to the output end of the asphalt fume collecting pipeline, and the cooling liquid collecting tower is used to reduce the temperature of the asphalt fume, so that the oil gas in the asphalt fume is cooled to form liquid and collected in the cooling liquid collecting tower;

[0011] A solvent absorption tower, the solvent absorption tower is connected to the cooling liquid collection tower, and a solvent spraying assembly is provided in the solvent absorption tower for absorbing benzene compounds in the asphalt fume;

[0012] An alkali solution absorption tower, the alkali solution absorption tower is connected to the solvent absorption tower, and an alkaline solution spraying assembly is provided in the alkali solution absorption tower for absorbing hydrogen sulfide in asphalt fume;

[0013] An activated carbon adsorption tower is connected to the alkali solution absorption tower. Activated carbon is placed in the activated carbon adsorption tower to eliminate the odor of asphalt fume. The top of the activated carbon adsorption tower is used to discharge the purified asphalt fume.

[0014] Preferably, the cooling liquid collecting tower comprises an inner tower and an outer tower, the inner tower is used for circulating asphalt fume, and the cavity between the inner tower and the outer tower is used for circulating cold air.

[0015] Preferably, the outer tower is connected to a cold air input pipe and a cold air output pipe, the input end of the cold air input pipe is connected to a cold air generating device, a blower is provided on the cold air input pipe, and a liquid discharge pipe is provided at the bottom of the inner tower, and a control valve is provided on the liquid discharge pipe.

[0016] Preferably, the bottom of the solvent absorption tower is connected to the cooling liquid collecting tower through a first flue gas transmission pipe, the first flue gas transmission pipe is provided with an induced draft fan, the solvent spraying assembly includes a first circulation pump, the first circulation pump is provided with a first solvent pipeline and a second solvent pipeline, the first solvent pipeline is arranged between the discharge port of the solvent absorption tower and the liquid inlet of the first circulation pump, one end of the second solvent pipeline is connected to the liquid outlet of the first circulation pump, and the other end is connected to a plurality of solvent branch pipelines, and the output ends of the plurality of solvent branch pipelines are all connected to the first spray head located in the solvent absorption tower.

[0017] Preferably, the first solvent pipeline is connected to a solvent input pipeline, and the second solvent pipeline is connected to a solvent output pipeline.

[0018] Preferably, a plurality of the first spray heads are arranged in a vertical direction.

[0019] Preferably, a second flue gas transmission pipeline is provided on the top of the alkali liquid absorption tower and the solvent absorption tower, the alkaline solution spraying assembly includes a second circulation pump, the second circulation pump is provided with a first alkali liquid pipeline and a second alkali liquid pipeline, the first alkali liquid pipeline is arranged between the discharge port of the alkali liquid absorption tower and the liquid inlet of the second circulation pump, one end of the second alkali liquid pipeline is connected to the liquid outlet of the second circulation pump, and the other end is connected to the second spray head located in the alkali liquid absorption tower.

[0020] Preferably, the second alkali solution pipeline is connected to an alkali solution input pipeline and an alkali solution output pipeline.

[0021] Preferably, a three-way control valve is provided on the outside of the alkali liquid absorption tower, the inlet of the three-way control valve is connected to the top exhaust port of the alkali liquid absorption tower, the first outlet of the three-way control valve is connected to the first purified flue gas emission pipe, the second outlet of the three-way control valve is connected to the bottom of the activated carbon adsorption tower through the third flue gas transmission pipe, and the top of the activated carbon adsorption tower is connected to the second purified flue gas emission pipe.

[0022] Compared with the above-mentioned background technology, the utility model provides a modified asphalt loading crane pipe. When loading and unloading modified asphalt, the vertical pipe is inserted into the tank truck. At this time, the sealing cap is against the tank truck input port to achieve sealing when the tank truck is injected. The heat transfer medium flows into the first jacket pipe through the heat transfer medium input pipeline. At the same time, a first pipeline is arranged between the output end of the first jacket pipe and the input end of the second jacket pipe, so that the heat transfer medium in the first jacket pipe can flow into the second jacket pipe, thereby adjusting the temperature of the modified asphalt located in the inner pipe and the outer pipe, preventing the viscosity from increasing due to the decrease in asphalt temperature, thereby improving In order to ensure the fluidity of modified asphalt during loading and unloading, a first conducting pipe is provided on the outer wall of the first jacketed tube, and a second conducting pipe is provided on the outer wall of the second jacketed tube. One end of the second conducting pipe is connected to the output end of the second jacketed tube, so that the heat transfer medium can flow out of the second jacketed tube smoothly. The output end of the second conducting pipe is connected to the input end of the first conducting pipe through the second pipeline, and the output end of the first conducting pipe is connected to the heat transfer medium output pipeline to discharge the heat transfer medium after heat exchange. The output end of the flue gas collection pipeline is connected to the gas treatment device, so that the flue gas generated during the asphalt transportation process can be collected and treated in time.

[0023] In summary, the modified asphalt loading crane pipe provided in the present application not only improves the loading efficiency of modified asphalt and ensures the health and safety of operators, but also meets environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] FIG1 is a schematic diagram of the structure of a modified asphalt loading crane provided by an embodiment of the utility model;

[0026] FIG. 2 is a schematic diagram of the structure of a gas processing device provided in an embodiment of the present utility model.

[0027] in:

[0028] 1-column, 2-inner tube, 3-outer tube, 4-vertical tube, 5-first jacket tube, 6-cooling liquid collecting tower, 7-solvent absorption tower, 8-alkali solution absorption tower, 9-activated carbon adsorption tower;

[0029] 41-sealing cap, 42-asphalt fume collection pipeline;

[0030] 51 - second jacket pipe, 52 - first conducting pipe, 53 - second conducting pipe, 54 - heat transfer medium input pipe, 55 - first pipe, 56 - second pipe, 57 - heat transfer medium output pipe;

[0031] 61-cold air input pipe, 62-cold air output pipe, 63-blower, 64-liquid discharge pipe;

[0032] 71-first flue gas transmission pipeline, 72-induced draft fan, 73-first circulation pump, 74-first solvent pipeline, 75-second solvent pipeline, 76-first spray head, 77-solvent input pipeline, 78-solvent output pipeline;

[0033] 81-second flue gas transmission pipeline, 82-second circulation pump, 83-first alkali solution pipeline, 84-second alkali solution pipeline, 85-second spray head, 86-alkali solution input pipeline, 87-alkali solution output pipeline, 88-three-way control valve, 89-first purified flue gas discharge pipeline;

[0034] 91-the third flue gas transmission pipeline, 92-the second purified flue gas emission pipeline. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to 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 the embodiments. Based on the embodiments in 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.

[0036] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Referring to Figure 1, the present application provides a modified asphalt loading crane pipe, which is mainly composed of a column 1. The column 1 serves as a support for the overall structure to ensure the stability of the crane pipe. On one side of the column 1, an inner pipe 2 is fixed. The inner pipe 2 serves as the main transportation channel for the modified asphalt and is responsible for transporting the modified asphalt from the storage device to the designated location. The output end of the inner pipe 2 is connected to the outer pipe 3 through an elbow and a universal joint, which not only ensures the smoothness of transportation, but also can be flexibly adjusted as needed. The output end of the outer pipe 3 is rotatably installed with a vertical pipe 4, so that the crane pipe can adapt to different loading environments and improve the flexibility of operation. A spring cylinder is provided between the universal joint and the outer pipe, which not only buffers the impact during transportation, but also enhances the stability of the overall structure.

[0038] The outer wall of the inner tube 2 is provided with a first jacket tube 5, and the outer wall of the outer tube 3 is provided with a second jacket tube 51. The cavities of the first jacket tube 5 and the second jacket tube 51 can both be input with heat transfer medium, and the temperature of the modified asphalt is adjusted through heat exchange between the heat transfer medium and the inner tube 2 and the outer tube 3, so as to prevent the viscosity from increasing due to the decrease in the asphalt temperature, thereby improving the fluidity of the modified asphalt during loading and unloading.

[0039] In addition, in order to realize the recycling of heat transfer medium, a first jacket tube 5 is provided on the outer wall of the inner tube 2, and a second jacket tube 51 is provided on the outer wall of the outer tube 3. Heat transfer medium can be input into the cavity of the first jacket tube 5 and the cavity of the second jacket tube 51. The heat transfer medium is used to adjust the temperature of the modified asphalt in the inner tube 2 and the outer tube 3. A first conducting tube 52 is provided on the outer wall of the first jacket tube 5, and a second conducting tube 53 is provided on the outer wall of the second jacket tube 51. One end of the second conducting tube 53 is connected to the output end of the second jacket tube 51, and the input end of the first jacket tube 5 is connected to the heat transfer medium input pipeline 54. A first pipeline 55 is provided between the output end of the first jacket tube 5 and the input end of the second jacket tube 51. The output end of the second conducting tube 53 is connected to the input end of the first conducting tube 52 through a second pipeline 56, and the output end of the first conducting tube 52 is connected to the heat transfer medium output pipeline 57.

[0040] A sealing cap 41 is installed on the vertical pipe 4 to effectively prevent leakage of asphalt during transportation. At the same time, an asphalt fume collection pipeline 42 is also connected to the sealing cap 41, and the output end of the fume collection pipeline 42 is connected to the gas treatment device. In this way, the fume generated during the asphalt transportation process can be collected and treated in time, greatly reducing pollution to the environment and ensuring the health and safety of operators.

[0041] The working principle of a modified asphalt loading crane pipe provided in the present application is as follows: when loading and unloading asphalt, the vertical pipe 4 is inserted into the tank truck, at this time, the sealing cap 41 is against the tank truck input port to achieve sealing when the tank truck is injected, and the heat transfer medium flows into the first jacket tube 5 through the heat transfer medium input pipeline 54. At the same time, a first pipeline 55 is provided between the output end of the first jacket tube 5 and the input end of the second jacket tube 51, so that the heat transfer medium in the first jacket tube 5 can flow into the second jacket tube 51, thereby adjusting the temperature of the modified asphalt located in the inner tube 2 and the outer tube 3. The outer wall of the first jacket tube 5 is provided with The first conducting pipe 52 and the second jacketed pipe 51 are provided with a second conducting pipe 53 on their outer walls, one end of the second conducting pipe 53 is connected to the output end of the second jacketed pipe 51, so that the heat transfer medium can smoothly flow out of the second jacketed pipe 51, the output end of the second conducting pipe 53 is connected to the input end of the first conducting pipe 52 through the second pipeline 56, the output end of the first conducting pipe 52 is connected to the heat transfer medium output pipeline 57, and the heat transfer medium that has undergone heat exchange is discharged, the output end of the flue gas collection pipeline 42 is connected to the gas treatment device, so that the flue gas generated during the asphalt transportation process can be collected and treated in time.

[0042] In summary, the modified asphalt loading crane pipe provided in the present application not only improves the loading efficiency of the modified asphalt, but also ensures the stability of the quality of the asphalt, while also meeting environmental protection requirements.

[0043] Specifically, the heat transfer medium input pipeline 54 is provided with a control valve. When the modified asphalt is loaded, the control valve is opened, and after the loading is completed, the control valve is closed. The heat transfer medium of the present application is heat transfer oil.

[0044] That is to say, through the precise control of the control valve, the real-time adjustment of the temperature of the modified asphalt is achieved. During the loading process of the modified asphalt, the control valve is in an open state. At this time, the heat-conducting oil flows into the first jacket tube 5 continuously through the heat transfer medium input pipeline 54. The heat-conducting oil, with its excellent thermal conductivity, quickly transfers heat to the modified asphalt in the inner tube 2 to ensure that its temperature is always maintained within a suitable range. This process not only ensures the fluidity of the asphalt, but also avoids the solidification or blockage problems caused by too low temperature, greatly improving the loading efficiency. When the modified asphalt is loaded, the control valve will be closed. The heat transfer medium selected by this application is heat-conducting oil, which has high temperature stability, good thermal conductivity and low maintenance cost.

[0045] Referring to FIG. 2 , the gas processing device provided in the present application includes:

[0046] A cooling liquid collecting tower 6, the top of which is connected to the output end of the asphalt fume collecting pipeline 42, and the cooling liquid collecting tower 6 is used to reduce the temperature of the asphalt fume, so that the oil gas in the asphalt fume is cooled to form liquid and collected in the cooling liquid collecting tower 6. The cooling liquid collecting tower 6 includes an inner tower and an outer tower, the inner tower is used to circulate the asphalt fume, and the cavity between the inner tower and the outer tower is used to circulate cold air;

[0047] The solvent absorption tower 7 is connected to the cooling and collecting tower 6. A solvent spraying assembly is provided in the solvent absorption tower 7 to absorb benzene compounds in the asphalt fume;

[0048] Alkali liquid absorption tower 8, the alkali liquid absorption tower 8 is connected to the solvent absorption tower 7, and an alkaline solution spraying assembly is provided in the alkali liquid absorption tower 8 for absorbing hydrogen sulfide in the asphalt fume;

[0049] The activated carbon adsorption tower 9 is connected to the alkali solution absorption tower 8. Activated carbon is placed in the activated carbon adsorption tower 9 to eliminate the odor of the asphalt fume. The top of the activated carbon adsorption tower 9 is used to discharge the purified asphalt fume.

[0050] That is to say, the gas treatment device of the present application is composed of a cooling liquid collection tower 6 , a solvent absorption tower 7 , an alkali solution absorption tower 8 and an activated carbon adsorption tower 9 .

[0051] First, the top of the cooling liquid collecting tower 6 is connected to the output end of the asphalt fume collection pipeline 42 to ensure that the asphalt fume can enter smoothly. The cooling liquid collecting tower adopts a double-layer structure design, including an inner tower and an outer tower. The inner tower is mainly used to circulate the asphalt fume, and the cavity between the inner tower and the outer tower is used to circulate cold air. Such a design not only enhances the cooling effect, but also improves the energy utilization efficiency. Through the treatment of the cooling liquid collecting tower 6, the temperature of the asphalt fume is reduced, and the oil and gas therein are also formed into liquid due to the cooling, which is effectively collected in the inner tower, thereby realizing the preliminary treatment of the asphalt fume.

[0052] Next, the preliminarily treated asphalt fume enters the solvent absorption tower 7. The solvent absorption tower 7 is provided with a solvent spraying assembly, which can spray out organic solvents to effectively absorb benzene compounds in the asphalt fume, thereby helping to protect the environment and human health.

[0053] Then, the asphalt fume enters the alkali solution absorption tower 8. The alkali solution absorption tower 8 is provided with an alkaline solution spraying assembly, which can absorb acidic substances such as hydrogen sulfide in the asphalt fume by spraying the alkaline solution. This step further purifies the asphalt fume and makes it more in line with the emission standards.

[0054] Finally, the asphalt fume treated by the previous processes enters the activated carbon adsorption tower 9. The tower contains activated carbon, which can absorb the odorous substances in the asphalt fume, further improving the quality of the gas. After being treated by the activated carbon adsorption tower, the harmful substances and odor in the asphalt fume are effectively eliminated, and the purified gas is finally discharged from the top of the tower, meeting the environmental protection requirements.

[0055] Specifically, the cooling liquid collecting tower 6, the solvent absorption tower 7, the alkali solution absorption tower 8 and the activated carbon absorption tower 9 are all electrically connected to the controller or the single chip.

[0056] Specifically, the outer tower is connected to a cold air input pipe 61 and a cold air output pipe 62, the input end of the cold air input pipe 61 is connected to a cold air generating device, a blower 63 is provided on the cold air input pipe 61, and a liquid discharge pipe 64 is provided at the bottom of the inner tower, and a control valve is provided on the liquid discharge pipe 64.

[0057] That is to say, the double-layer structure design of the cooling liquid collecting tower 6 enables it to have cooling and liquid collecting functions when processing asphalt fume, and the input end of the cold air input pipe 61 is closely connected with the cold air generating device, ensuring a continuous and stable supply of cold air. A blower 63 is also provided on the cold air input pipe 61, and the function of the blower is to provide power for the cold air so that it can flow smoothly into the cavity between the outer tower and the inner tower. When the blower 63 is started, the cold air generated by the cold air generating device flows into the outer tower of the cooling liquid collecting tower through the cold air input pipe 61 under the action of the blower. At the same time, the asphalt fume in the inner tower is cooled by the cold air in the outer tower during the circulation process, and its temperature drops rapidly. As the temperature drops, the oil and gas in the asphalt fume gradually condenses into liquid, which is then collected at the bottom of the inner tower of the cooling liquid collecting tower 6. In order to facilitate the discharge and collection of the liquid, a liquid discharge pipe 64 is specially provided at the bottom of the inner tower, and a control valve is also provided on the liquid discharge pipe 64. When it is necessary to discharge the liquid, the control valve only needs to be opened, and the liquid will be discharged smoothly through the liquid discharge pipe 64, thereby achieving effective treatment and resource recovery of asphalt fume.

[0058] More specifically, the bottom of the solvent absorption tower 7 is connected to the cooling and collecting tower 6 through a first flue gas transmission pipeline 71, and a draft fan 72 is provided on the first flue gas transmission pipeline 71. The solvent spraying assembly includes a first circulation pump 73, and a first solvent pipeline 74 and a second solvent pipeline 75 are provided on the first circulation pump 73. The first solvent pipeline 74 is arranged between the discharge port of the solvent absorption tower 7 and the liquid inlet of the first circulation pump 73. One end of the second solvent pipeline 75 is connected to the liquid outlet of the first circulation pump 73, and the other end is connected to a plurality of solvent branch pipelines, and the output ends of the plurality of solvent branch pipelines are all connected to a first spray head 76 located in the solvent absorption tower 7; a solvent input pipeline 77 is connected to the first solvent pipeline 74, and a solvent output pipeline 78 is connected to the second solvent pipeline 75; and a plurality of first spray heads 76 are arranged in a vertical direction.

[0059] That is to say, in order to ensure that the asphalt fume can smoothly enter the solvent absorption tower 7, its bottom is closely connected with the cooling liquid collecting tower 6 through the first fume transmission pipeline 71, and the induced draft fan 72 is arranged on the first fume transmission pipeline 71, and the induced draft fan 72 ensures that the fume can smoothly enter the solvent absorption tower 7. The solvent spraying assembly is composed of a first circulation pump 73, a first solvent pipeline 74, a second solvent pipeline 75, a plurality of solvent branch pipelines and a plurality of first spray heads 76. The first circulation pump 73 is used as a power source for solvent circulation, and its liquid inlet is connected to the liquid discharge port of the solvent absorption tower 7 through the first solvent pipeline 74, so as to ensure that the used solvent in the tower can smoothly flow back to the first circulation pump 73. At the same time, the first solvent pipeline 74 is also connected to a solvent input pipeline 77, which allows fresh solvent to be continuously added to the system to maintain the activity and absorption capacity of the solvent. One end of the second solvent pipeline 75 is connected to the liquid outlet of the first circulation pump 73, and the other end is connected to a plurality of solvent branch pipelines. The output end of each branch pipeline is connected to a first spray head 76, which are arranged in a vertical direction so that the solvent can be evenly sprayed on all levels of the asphalt fume to improve the absorption efficiency. In addition, the second solvent pipeline 75 is also connected to a solvent output pipeline 78, which allows the solvent to be discharged smoothly after use, facilitating subsequent recycling and treatment. The design of the entire solvent spray assembly is exquisite and reasonable, which not only ensures the efficient use of the solvent, but also makes the entire absorption process more stable and reliable.

[0060] More specifically, the first solvent pipeline 74, the second solvent pipeline 75, the solvent input pipeline 77 and the solvent output pipeline 78 are all connected with control valves. The control valve on the first solvent pipeline 74 is mainly responsible for adjusting the solvent flow rate from the discharge port of the solvent absorption tower 7 to the first circulation pump 73. By accurately controlling the opening of the valve, the amount of solvent recovered can be ensured to be moderate, which not only avoids waste, but also ensures that the amount of solvent in the pump is sufficient to maintain the continuous operation of the system. The control valve on the second solvent pipeline 75 is responsible for regulating the distribution amount of the solvent flowing out of the first circulation pump 73 to multiple solvent branch pipelines. The setting of this valve enables the operator to flexibly adjust the solvent spraying amount in each area according to the concentration and processing requirements of the asphalt fume, and achieve precise control. The control valve on the solvent input pipeline 77 is the key control point for fresh solvent to enter the system. By adjusting the opening of the valve, the amount of fresh solvent replenished can be accurately controlled to ensure that the solvent concentration in the system is always maintained at the best state, thereby improving the absorption efficiency of benzene compounds. Finally, the control valve on the solvent output pipeline 78 is responsible for controlling the discharge amount of the used solvent. This valve setting not only helps maintain solvent balance in the system, but also ensures that the appropriate amount of solvent is discharged to facilitate subsequent recovery and disposal.

[0061] In summary, the solvent absorption tower 7 achieves efficient absorption of benzene compounds in asphalt fume through the first fume transmission pipeline 71 at the bottom, the induced draft fan 72 and the internal solvent spraying assembly.

[0062] Furthermore, a second flue gas transmission pipeline 81 is provided on the top of the alkali liquid absorption tower 8 and the solvent absorption tower 7, and the alkaline solution spraying assembly includes a second circulation pump 82, and the second circulation pump 82 is provided with a first alkali liquid pipeline 83 and a second alkali liquid pipeline 84, the first alkali liquid pipeline 83 is arranged between the discharge port of the alkali liquid absorption tower 8 and the liquid inlet of the second circulation pump 82, one end of the second alkali liquid pipeline 84 is connected to the liquid outlet of the second circulation pump 82, and the other end is connected to the second spray head 85 located in the alkali liquid absorption tower 8, and the second alkali liquid pipeline 84 is connected to an alkali liquid input pipeline 86 and an alkali liquid output pipeline 87.

[0063] That is to say, a second flue gas transmission pipeline 81 is specially arranged between the alkali liquid absorption tower 8 and the top of the solvent absorption tower 7 to ensure the continuous and stable transmission of the flue gas. The alkaline solution spraying assembly is composed of a second circulation pump 82, a first alkali liquid pipeline 83, a second alkali liquid pipeline 84 and a second spray head 85. The first alkali liquid pipeline 83 connects the discharge port of the alkali liquid absorption tower 8 and the liquid inlet of the second circulation pump 82 to ensure that the used alkaline solution can smoothly flow back to the second circulation pump 82 for recycling. One end of the second alkali liquid pipeline 84 is connected to the liquid outlet of the second circulation pump 82, and the other end is directly connected to the second spray head 85 located in the alkali liquid absorption tower 8, so that the alkaline solution can be directly and efficiently sprayed into the asphalt fume, reacting with the acidic substances such as hydrogen sulfide therein, thereby achieving the purpose of absorption.

[0064] In order to maintain the activity and absorption capacity of the alkaline solution, an alkaline solution input pipeline 86 and an alkaline solution output pipeline 87 are also connected to the second alkaline solution pipeline 84. The alkaline solution input pipeline 86 is responsible for replenishing fresh alkaline solution to ensure that the absorption effect is always maintained at the best state. The alkaline solution output pipeline 87 is responsible for discharging the alkaline solution after use for subsequent recovery and treatment.

[0065] Specifically, the alkaline solution is a sodium hydroxide solution. Control valves are provided on the first alkali solution pipeline 83, the second alkali solution pipeline 84, the alkali solution input pipeline 86 and the alkali solution output pipeline 87. The control of the above-mentioned control valves can be automatic control or manual control. When automatically controlled, the control valve is electrically connected to the single-chip microcomputer or controller.

[0066] Specifically, a three-way control valve 88 is provided on the outside of the alkali liquid absorption tower 8, the inlet of the three-way control valve 88 is connected to the top exhaust port of the alkali liquid absorption tower 8, the first outlet of the three-way control valve 88 is connected to the first purified flue gas emission pipe 89, the second outlet of the three-way control valve 88 is connected to the bottom of the activated carbon adsorption tower 9 through the third flue gas transmission pipe 91, and the top of the activated carbon adsorption tower 9 is connected to the second purified flue gas emission pipe 92.

[0067] That is to say, the three-way control valve 88 is the connection point between the alkali liquid absorption tower 8 and the external pipeline, and its inlet is closely connected to the top exhaust port of the alkali liquid absorption tower 8, ensuring that the flue gas after the alkali liquid absorption treatment can be discharged smoothly. The three-way control valve 88 has two outlets, namely the first outlet and the second outlet. The first outlet is connected to the first purified flue gas discharge pipeline 89, the main function of which is to discharge the flue gas directly into the atmosphere after the alkali liquid absorption treatment and the acidic substances such as hydrogen sulfide have been effectively removed. This design is suitable for the situation where the content of other harmful substances in the flue gas is low and no further treatment is required, or when the activated carbon adsorption tower 9 has an accident, it is directly discharged into the atmosphere. The second outlet is connected to the bottom of the activated carbon adsorption tower 9 through the third flue gas transmission pipeline 91, so that the flue gas after the alkali liquid absorption treatment can continue to enter the activated carbon adsorption tower 9 for deep treatment. In the activated carbon adsorption tower 9, the activated carbon can absorb the odor substances in the flue gas, further improving the quality of the gas. The flue gas treated by the activated carbon adsorption tower 9 is finally discharged through the second purified flue gas discharge pipeline 92 to achieve higher environmental protection standards.

[0068] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0069] This article uses specific examples to explain the principle and implementation of a modified asphalt loading crane provided by the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A modified asphalt loading crane pipe, comprising a column (1), an inner pipe (2) fixed to one side of the column (1), the output end of the inner pipe (2) being connected to an outer pipe (3) via an elbow and a universal joint, and a vertical pipe (4) being rotatably mounted on the output end of the outer pipe (3), characterized in that: The outer wall of the inner tube (2) is provided with a first jacket tube (5), and the outer wall of the outer tube (3) is provided with a second jacket tube (51). Both the cavity of the first jacket tube (5) and the cavity of the second jacket tube (51) can be input with a heat transfer medium, and the heat transfer medium is used to adjust the temperature of the modified asphalt in the inner tube (2) and the outer tube (3). The outer wall of the first jacket tube (5) is provided with a first conduction tube (52), and the outer wall of the second jacket tube (51) is provided with a second conduction tube (53). One end of the tube (53) is connected to the output end of the second jacket tube (51); the input end of the first jacket tube (5) is connected to the heat transfer medium input pipeline (54); a first pipeline (55) is provided between the output end of the first jacket tube (5) and the input end of the second jacket tube (51); the output end of the second conducting tube (53) is connected to the input end of the first conducting tube (52) via a second pipeline (56); and the output end of the first conducting tube (52) is connected to the heat transfer medium output pipeline (57); A sealing cap (41) is installed on the vertical pipe (4), and an asphalt fume collection pipeline (42) is connected to the sealing cap (41), and an output end of the asphalt fume collection pipeline (42) is connected to a gas processing device.

2. The modified asphalt loading crane pipe according to claim 1 is characterized in that: The gas processing device comprises: A cooling liquid collecting tower (6), the top of the cooling liquid collecting tower (6) being connected to the output end of the asphalt fume collecting pipeline (42), the cooling liquid collecting tower (6) being used to reduce the temperature of the asphalt fume, so that the oil gas in the asphalt fume is cooled to form liquid which is collected in the cooling liquid collecting tower (6); A solvent absorption tower (7), the solvent absorption tower (7) being connected to the cooling liquid collecting tower (6), and a solvent spraying assembly being provided in the solvent absorption tower (7) for absorbing benzene compounds in the asphalt fume; an alkali solution absorption tower (8), the alkali solution absorption tower (8) being connected to the solvent absorption tower (7), and an alkaline solution spraying assembly being provided in the alkali solution absorption tower (8) for absorbing hydrogen sulfide in the asphalt fume; An activated carbon adsorption tower (9), the activated carbon adsorption tower (9) being connected to the alkali solution absorption tower (8), activated carbon being placed in the activated carbon adsorption tower (9) for eliminating the odor of the asphalt fume, and the top of the activated carbon adsorption tower (9) for discharging the purified asphalt fume.

3. The modified asphalt loading crane pipe according to claim 2 is characterized in that: The cooling liquid collecting tower (6) comprises an inner tower and an outer tower, the inner tower is used for circulating asphalt fume, and the cavity between the inner tower and the outer tower is used for circulating cold air.

4. The modified asphalt loading crane pipe according to claim 3 is characterized in that: The outer tower is connected to a cold air input pipe (61) and a cold air output pipe (62); the input end of the cold air input pipe (61) is connected to a cold air generating device; a blower (63) is provided on the cold air input pipe (61); a liquid discharge pipe (64) is provided at the bottom of the inner tower; and a control valve is provided on the liquid discharge pipe (64).

5. The modified asphalt loading crane pipe according to claim 3 is characterized in that: The bottom of the solvent absorption tower (7) is connected to the cooling liquid collecting tower (6) through a first flue gas transmission pipeline (71), and an induced draft fan (72) is provided on the first flue gas transmission pipeline (71). The solvent spraying assembly comprises a first circulation pump (73), and a first solvent pipeline (74) and a second solvent pipeline (75) are provided on the first circulation pump (73). The first solvent pipeline (74) is arranged between the liquid discharge port of the solvent absorption tower (7) and the liquid inlet of the first circulation pump (73). One end of the second solvent pipeline (75) is connected to the liquid outlet of the first circulation pump (73), and the other end is connected to a plurality of solvent branch pipelines, and the output ends of the plurality of solvent branch pipelines are all connected to a first spray head (76) located in the solvent absorption tower (7).

6. The modified asphalt loading crane pipe according to claim 5 is characterized in that: The first solvent pipeline (74) is connected to a solvent input pipeline (77), and the second solvent pipeline (75) is connected to a solvent output pipeline (78).

7. The modified asphalt loading crane pipe according to claim 5 is characterized in that: A plurality of the first spray heads (76) are arranged in a vertical direction.

8. The modified asphalt loading crane pipe according to claim 3 is characterized in that: A second flue gas transmission pipeline (81) is provided on the top of the alkali solution absorption tower (8) and the solvent absorption tower (7); the alkaline solution spraying assembly comprises a second circulation pump (82); a first alkali solution pipeline (83) and a second alkali solution pipeline (84) are provided on the second circulation pump (82); the first alkali solution pipeline (83) is provided between the liquid discharge port of the alkali solution absorption tower (8) and the liquid inlet of the second circulation pump (82); one end of the second alkali solution pipeline (84) is connected to the liquid outlet of the second circulation pump (82), and the other end is connected to a second spraying head (85) located in the alkali solution absorption tower (8).

9. The modified asphalt loading crane pipe according to claim 8, characterized in that: The second alkali solution pipeline (84) is connected to an alkali solution input pipeline (86) and an alkali solution output pipeline (87).

10. The modified asphalt loading crane pipe according to claim 8, characterized in that: A three-way control valve (88) is provided on the outside of the alkali liquid absorption tower (8), the inlet of the three-way control valve (88) is connected to the exhaust port at the top of the alkali liquid absorption tower (8), the first outlet of the three-way control valve (88) is connected to a first purified flue gas discharge pipeline (89), the second outlet of the three-way control valve (88) is connected to the bottom of the activated carbon adsorption tower (9) through a third flue gas transmission pipeline (91), and the top of the activated carbon adsorption tower (9) is connected to a second purified flue gas discharge pipeline (92).

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