Device and method for rapidly detecting naphthalene content in coal tar

Abstract

The present application relates to the technical fields of detecting coal tar, and disclose a device and method for rapidly detecting naphthalene content in coal tar, which comprises a distillation flask, a fractional column, a fractional head, a condenser, a receiver and a base, a support plate is vertically fixed on the top of the base, a fixed rod is fixed on one side of the support plate, the fractional column is fixedly installed on the end of the fixed rod, the distillation flask is arranged at the lower end of the fractional column, the fractional head is arranged at the upper end of the fractional column, the condenser is fixedly arranged on the downward inclined end of the fractional head, a support table is fixed on the other side of the support plate, a weighing device is fixed on the top of the support table, and the receiver is placed on the top of the weighing device. The device and method for rapidly detecting naphthalene content in coal tar adopts the heating mode of a bulb, and the bulb can rotate around the distillation flask, so that the coal tar in the distillation flask is slowly heated, thereby improving the separation quality of the three mixed naphthalene oil, and in addition, the separated three mixed naphthalene oil can be directly weighed, thereby improving the efficiency of content detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detecting coal tar, in particular to a device and method for rapidly detecting naphthalene content in coal tar. BACKGROUND

[0002] Coal tar distillation is a preliminary distillation of coal tar, which extracts crude products such as pitch and anthracene oil for direct export. The essence of the three mixed naphthalene oil is used as raw material for further processing in the tar workshop to extract high value-added products such as crude phenol, phenol oil, washing oil and industrial naphthalene, thereby creating more economic benefits. Coal tar processing is to cut the three mixed naphthalene oil in distillation first, and then to extract pure products. Since industrial naphthalene and crude phenol are high value-added products, the quality control of the three mixed naphthalene oil is particularly important.

[0003] Among them, patent number CN110196202B discloses a method for determining the three mixed naphthalene oil of coal tar, comprising the following steps: (1) weighing the coal tar after dehydration with a mass of X; (2) placing the coal tar into the distillation flask of the fractionating device, and connecting and assembling the fractionating device; (3) heating the distillation flask in step (2), cutting the temperature of the distillation segment at 180-250℃, weighing the weight X1 of the distillation product, and measuring the purity Z; (4) continuing to heat the coal tar in the distillation flask until the crystallization appears in the distillate, then stopping heating, recording the temperature at this time, and weighing the weight X2 of the distillation product in the receiver at this time; (5) calculating the content Y1 of naphthalene and the content Y2 of three mixed naphthalene oil in the coal tar according to the weight of the distillation product in steps (3) and (4).

[0004] In the above scheme, the three mixed naphthalene oil in the coal tar is separated by distillation, and the content value can be measured by calculating the weight of the three mixed naphthalene oil. However, in this scheme, the distillation flask is directly heated. Since the coal tar contains water, if direct open flame heating is used, it is easy to cause violent foaming, thereby affecting the quality of distillation separation. Therefore, a device and method for rapidly detecting naphthalene content in coal tar are proposed. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a device and method for rapidly detecting naphthalene content in coal tar, which adopts a lamp bulb heating method, and the lamp bulb can rotate around the distillation flask, so that the coal tar inside the distillation flask is slowly heated, thereby improving the separation quality of the three mixed naphthalene oil. In addition, the separated three mixed naphthalene oil can be directly weighed, improving the efficiency of content detection. The problem of directly heating the distillation flask, which is prone to cause violent foaming due to water in the coal tar if direct open flame heating is used, is solved.

[0007] (ii) Technical Solution

[0008] To achieve the above object, the present application provides the following technical solution: A device for rapidly detecting the naphthalene content in coking coal oil, comprising a distillation flask, a fractional column, a fractional head, a condenser, a receiver and a base, a support plate is vertically fixed on the top of the base, a fixed rod is fixed on one side of the support plate, the fractional column is fixedly installed at the end of the fixed rod, the distillation flask is arranged at the lower end of the fractional column, the fractional head is arranged at the upper end of the fractional column, the condenser is fixedly arranged at the downward inclined end of the fractional head, a support table is fixed on the other side of the support plate, a weighing device is fixed on the top of the support table, and the receiver is placed on the top of the weighing device.

[0009] A supporting plate is fixed on the side of the support plate below the fixed rod, a U-shaped fixed plate is fixed at the end of the supporting plate, a U-shaped rotating plate is arranged on the outside of the U-shaped fixed plate, both ends of the U-shaped rotating plate are rotatably connected with the U-shaped fixed plate through a rotating shaft, an electric cylinder is horizontally fixed on the upper surface of the supporting plate, a rack is fixed on the moving end of the electric cylinder, a gear is fixed at one end of the rotating shaft, the gear is arranged in meshing relationship with the rack, a U-shaped circuit board is arranged in the U-shaped rotating plate, a plurality of evenly distributed heating bulbs are mounted on the inner side of the U-shaped circuit board, and elastic clamping mechanisms connected with the U-shaped rotating plate are arranged at both ends of the U-shaped circuit board.

[0010] Preferably, the elastic clamping mechanism comprises a clamping rod, a fixed block and a spring, the clamping rod is inserted horizontally into the U-shaped circuit board, a insertion hole is formed in the side wall of the U-shaped rotating plate corresponding to the position of the clamping rod, one end of the clamping rod is inserted into the insertion hole, the other end of the clamping rod is fixedly connected with the fixed block, the spring is sleeved on the rod wall of the clamping rod, and both ends of the spring are fixedly connected with the side wall of the fixed block and the side wall of the U-shaped circuit board.

[0011] Preferably, a U-shaped mounting groove is formed in the inner side wall of the U-shaped rotating plate, and the U-shaped circuit board is arranged in the U-shaped mounting groove.

[0012] Preferably, the size of the U-shaped circuit board is greater than the diameter of the distillation flask, and the U-shaped circuit board rotates around the outside of the distillation flask.

[0013] Preferably, the lower end of the condenser is arranged in an inclined manner towards the vertical direction, and the receiver is located directly below the lower end of the condenser.

[0014] Preferably, the top opening of the distillation flask is connected with the lower end of the fractional column in a spiral manner, and the fractional column is a 48-tooth fractional column.

[0015] A method for rapidly detecting the naphthalene content in coking coal oil, the specific steps are as follows:

[0016] Step one: first, the distillation flask is screwed from the lower end of the fractionating column, and a certain amount of coal tar is poured into the inside of the distillation flask, and then the distillation flask is screwed tightly at the lower end of the fractionating column;

[0017] Step two: open the electric cylinder work, the electric cylinder can make the rack move left and right when repeatedly completing the stretching and contracting action, the rack drives the gear to reverse during the left and right movement, so that the U-shaped rotating plate drives the heating bulb on the U-shaped circuit board to rotate around the distillation flask, so that the coal tar inside the distillation flask is slowly heated, so that the naphthalene inside the coal tar is distilled out, and the phenomenon of violent foam does not appear after heating.

[0018] Step three: the distilled naphthalene is liquefied through the condenser, and then discharged through the discharge port of the condenser, and then automatically dripped into the inside of the receiver, and since the weighing device is placed at the bottom of the receiver, the weighing device can directly weigh the content of naphthalene.

[0019] Step four: compare the weight of the separated naphthalene with the weight of the original coal tar and calculate, so as to calculate the naphthalene content in the coal tar.

[0020] (Three) beneficial effects

[0021] Compared with the prior art, the present application provides a device and method for rapidly detecting the naphthalene content in coal tar, which has the following beneficial effects:

[0022] 1. The device and method for rapidly detecting the naphthalene content in coal tar, by providing a distillation flask, a fractionating column, a fractionating head, a condenser, a receiver and a weighing device, the coal tar inside the heating flask is slowly heated, so that the naphthalene inside the coal tar is distilled out, and the phenomenon of violent foam does not appear after heating, the distilled naphthalene is liquefied through the condenser, and then discharged through the discharge port of the condenser, and then automatically dripped into the inside of the receiver, and since the weighing device is placed at the bottom of the receiver, the weighing device can directly weigh the content of naphthalene.

[0023] 2. The device and method for rapidly detecting the naphthalene content in coal tar, by providing a U-shaped rotating plate, a shaft, an electric cylinder, a rack, a gear, a U-shaped circuit board and a heating bulb, opening the electric cylinder work, the electric cylinder can make the rack move left and right when repeatedly completing the stretching and contracting action, the rack drives the gear to reverse during the left and right movement, so that the U-shaped rotating plate drives the heating bulb on the U-shaped circuit board to rotate around the distillation flask, so that the coal tar inside the distillation flask is slowly heated, so that the naphthalene inside the coal tar is distilled out, and the phenomenon of violent foam does not appear after heating.

[0024] 3. The device and method for rapidly detecting the naphthalene content in coking coal tar, through the clamping rod, fixed block and spring, the spring can exert a spring force on the fixed block, so that one end of the clamping rod is inserted into the insertion hole on the U-shaped rotating plate, thereby enabling the U-shaped circuit board to be installed between the U-shaped rotating plate, and also facilitating the quick disassembly of the U-shaped circuit board from the U-shaped rotating plate. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A structural diagram of a device for rapidly detecting the naphthalene content in coking coal tar is provided.

[0026] Figure 2 A structural enlarged view of part A in 1.

[0027] Figure 3 A side view of the U-shaped rotating plate in 1.

[0028] Figure 4 A structural enlarged view of part B in 3.

[0029] In the figure: 1, distillation flask; 2, fractional distillation column; 3, fractional distillation head; 4, condenser; 5, receiver; 6, base; 7, support plate; 8, fixed rod; 9, support table; 10, weighing device; 11, supporting plate; 12, U-shaped fixed plate; 13, U-shaped rotating plate; 14, rotating shaft; 15, electric cylinder; 16, rack; 17, gear; 18, U-shaped circuit board; 19, heating bulb; 20, clamping rod; 21, fixed block; 22, spring; 23, U-shaped mounting groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Embodiment 1

[0032] Please refer to Figure 1The utility model provides a kind of device for rapidly detecting naphthalene content in tar, including distilling flask 1, fractional column 2, fractional head 3, condenser 4, receiver 5 and base 6, the top of base 6 is vertically fixed with support plate 7, one side of support plate 7 is fixed with fixed rod 8, fractional column 2 is fixedly installed at the end of fixed rod 8, distilling flask 1 is arranged at the lower end of fractional column 2, the top opening of distilling flask 1 is connected between the lower end of fractional column 2 with spiral mode, fractional column 2 uses 48 teeth fractional column, fractional head 3 is arranged at the upper end of fractional column 2, condenser 4 is fixedly arranged at the downwardly inclined end of fractional head 3, the other side of support plate 7 is fixed with support table 9, the top of support table 9 is fixed with weighing apparatus 10, receiver 5 is placed on the top of weighing apparatus 10, the lower end of condenser 4 is inclinedly arranged with vertical direction, receiver 5 is located at the position directly below the lower end of condenser 4.

[0033] Embodiment 2

[0034] Please refer to Figures 2-4 The side of support plate 7 and below fixed rod 8 is fixed with supporting plate 11, the end of supporting plate 11 is fixed with U-shaped fixed plate 12, the outside of U-shaped fixed plate 12 is provided with U-shaped rotating plate 13, the two ends of U-shaped rotating plate 13 are rotatably connected with U-shaped fixed plate 12 through rotating shaft 14, the upper surface of supporting plate 11 is transversely fixed with electric cylinder 15, the moving end of electric cylinder 15 is fixed with rack 16, one end of rotating shaft 14 is fixed with gear 17, gear 17 is meshed with rack 16, the inside of U-shaped rotating plate 13 is provided with U-shaped circuit board 18, the inside wall of U-shaped rotating plate 13 is provided with U-shaped mounting groove 23, U-shaped circuit board 18 is located in the inside of U-shaped mounting groove 23, the size of U-shaped circuit board 18 is greater than the diameter of distilling flask 1, and U-shaped circuit board 18 rotates around the outside of distilling flask 1, a plurality of evenly distributed heating bulbs 19 are installed on the inside of U-shaped circuit board 18, and the two ends of U-shaped circuit board 18 are provided with elastic clamping mechanisms connected with U-shaped rotating plate 13.

[0035] Embodiment 3

[0036] Please refer to Figures 3-4 The elastic clamping mechanism includes clamping rod 20, fixed block 21 and spring 22, clamping rod 20 is inserted on U-shaped circuit board 18 in transverse direction, the side wall of U-shaped rotating plate 13 and corresponding to the position of clamping rod 20 is provided with insertion hole, one end of clamping rod 20 is inserted into insertion hole, and the other end of clamping rod 20 is fixedly connected with fixed block 21, spring 22 is sleeved on the rod wall of clamping rod 20, and the two ends of spring 22 are respectively fixedly connected with the side wall of fixed block 21 and the side wall of U-shaped circuit board 18, spring 22 can exert elastic force on fixed block 21, so that one end of clamping rod 20 is inserted into the insertion hole on U-shaped rotating plate 13, thereby U-shaped circuit board 18 and U-shaped rotating plate 13 can be installed.

[0037] A rapid method for detecting naphthalene content in kerosene, comprising the following steps:

[0038] Step 1: First, unscrew the distillation flask 1 from the bottom of the fractionating column 2, pour a measured amount of tar into the inside of the distillation flask 1, and then screw the distillation flask 1 back onto the bottom of the fractionating column 2.

[0039] Step 2: Turn on the electric cylinder 15. When the electric cylinder 15 repeatedly completes the extension and retraction action, it can make the rack 16 move left and right. During the left and right movement, the rack 16 drives the gear 17 to rotate forward and backward, so that the U-shaped rotating plate 13 drives the heating bulb 19 on the U-shaped circuit board 18 to rotate around the distillation flask 1, so that the coal tar inside the distillation flask 1 is slowly heated, so that the naphthalene inside the coal tar is distilled out, and there will be no violent foaming phenomenon.

[0040] Step 3: The distilled naphthalene is liquefied through condenser 4 and then discharged through the outlet of condenser 4. After being discharged, it automatically drips into the inside of receiver 5. Since a weighing device 10 is placed at the bottom of receiver 5, the weighing device 10 can directly weigh the content of naphthalene.

[0041] Step 4: Compare and calculate the weight of the naphthalene at the separation point with the original weight of the tar oil to determine the naphthalene content in the tar oil.

[0042] In summary, the device and method for rapid detection of naphthalene content in tar oil are as follows: First, unscrew the distillation flask 1 from the lower end of the fractionation column 2, pour a measured amount of tar oil into the distillation flask 1, and then screw the distillation flask 1 back onto the lower end of the fractionation column 2. Then, turn on the electric cylinder 15. As the electric cylinder 15 repeatedly extends and retracts, it causes the rack 16 to move left and right. During this movement, the rack 16 drives the gear 17 to rotate in both directions, causing the U-shaped rotating plate 13 to rotate, causing the heating bulb 19 on the U-shaped circuit board 18 to move around the distillation flask. Rotating the distillation flask 1 slowly heats the coal tar inside, causing the naphthalene inside the coal tar to be distilled out without producing violent foam. The distilled naphthalene is liquefied by the condenser 4 and then discharged through the outlet of the condenser 4. After discharge, it automatically drips into the receiver 5. Since a weighing device 10 is placed at the bottom of the receiver 5, the weighing device 10 can directly weigh the naphthalene content. By comparing the weight of the naphthalene at the separation point with the original weight of the coal tar, the naphthalene content in the coal tar can be calculated.

Claims

1. A device for rapid detection of naphthalene content in coal tar, comprising a distillation flask (1), a fractionating column (2), a fractionating head (3), a condenser (4), a receiver (5) and a base (6), characterized in that: The top of the base (6) is vertically fixed with a support plate (7), one side of the support plate (7) is fixed with a fixed rod (8), the fractionating column (2) is fixedly installed at the end of the fixed rod (8), the distillation flask (1) is arranged at the lower end of the fractionating column (2), the fractionating head (3) is arranged at the upper end of the fractionating column (2), the condenser (4) is fixedly arranged at the downward inclined end of the fractionating head (3), the other side of the support plate (7) is fixed with a support table (9), the top of the support table (9) is fixed with a weighing device (10), and the receiver (5) is placed on the top of the weighing device (10). The side of the support plate (7) and below the fixed rod (8) is fixed with a supporting plate (11), the end of the supporting plate (11) is fixed with a U-shaped fixed plate (12), the outer side of the U-shaped fixed plate (12) is provided with a U-shaped rotating plate (13), the two ends of the U-shaped rotating plate (13) are rotatably connected with the U-shaped fixed plate (12) through the rotating shaft (14), the upper surface of the supporting plate (11) is transversely fixed with an electric cylinder (15), the moving end of the electric cylinder (15) is fixed with a rack (16), one end of the rotating shaft (14) is fixed with a gear (17), the gear (17) is meshed with the rack (16), the inside of the U-shaped rotating plate (13) is provided with a U-shaped circuit board (18), a plurality of evenly distributed heating bulbs (19) are mounted on the inner side of the U-shaped circuit board (18), and the two ends of the U-shaped circuit board (18) are provided with elastic clamping mechanisms connected with the U-shaped rotating plate (13).

2. The device for rapid detection of naphthalene content in coal tar according to claim 1, characterized in that: The elastic clamping mechanism comprises a clamping rod (20), a fixed block (21) and a spring (22), the clamping rod (20) is inserted horizontally on the U-shaped circuit board (18), the side wall of the U-shaped rotating plate (13) and corresponding to the position of the clamping rod (20) is provided with a insertion hole, one end of the clamping rod (20) is inserted into the insertion hole in a matched mode, the other end of the clamping rod (20) is fixedly connected with the fixed block (21), and the spring (22) is sleeved on the rod wall of the clamping rod (20), and the two ends of the spring (22) are fixedly connected with the side wall of the fixed block (21) and the side wall of the U-shaped circuit board (18) respectively.

3. The device for rapid detection of naphthalene content in coal tar according to claim 1, characterized in that: The inner side wall of the U-shaped rotating plate (13) is provided with a U-shaped mounting groove (23), and the U-shaped circuit board (18) is located in the inside of the U-shaped mounting groove (23).

4. The device for rapid detection of naphthalene content in coal tar according to claim 1, characterized in that: The size of the U-shaped circuit board (18) is greater than the diameter of the distillation flask (1), and the U-shaped circuit board (18) rotates around the outside of the distillation flask (1).

5. The device for rapid detection of naphthalene content in coal tar according to claim 1, characterized in that: The lower end of the condenser (4) is arranged in a vertical downward inclined mode, and the receiver (5) is located directly below the lower end of the condenser (4).

6. The device for rapid detection of naphthalene content in coal tar according to claim 1, characterized in that: The top opening of the distillation flask (1) is connected with the lower end of the fractionating column (2) in a spiral mode, and the fractionating column (2) is a 48-tooth fractionating column.

7. A method for rapidly detecting the naphthalene content in coal tar oil, using the device for rapidly detecting the naphthalene content in coal tar oil according to claim 1, characterized in that, The specific steps are as follows: Step one: first, unscrew the distillation flask (1) from the lower end of the fractionating column (2), pour a certain amount of coal tar into the inside of the distillation flask (1), and then screw the distillation flask (1) tightly on the lower end of the fractionating column (2); Step two: open the electric cylinder (15) work, electric cylinder (15) in repeated completion of the stretching and contracting action, can make the rack (16) left and right movement, rack (16) in the process of moving left and right drive gear (17) forward and reverse, so that the U-shaped rotating plate (13) drive U-shaped circuit board (18) on the heating bulb (19) around the distillation flask (1) rotation, so that the inside of the distillation flask (1) of coal tar is slowly heated, so that the naphthalene inside the coal tar is distilled out, and the phenomenon of excessive foam does not appear; Step three: the distilled naphthalene is liquefied through the condenser (4), and then discharged through the discharge port of the condenser (4). After discharge, it automatically drips into the inside of the receiver (5). Because the weigher (10) is placed at the bottom of the receiver (5), the weigher (10) can directly weigh the content of naphthalene. Step four: compare the weight of the separated naphthalene with the weight of the original coal tar and calculate, so as to calculate the naphthalene content in the coal tar.

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