Combined device for recovering and treating waste gas generated in traditional Chinese medicine calcining and control method thereof

Abstract

The invention discloses a waste gas recovery and treatment combined device for traditional Chinese medicine forging and a control method of the waste gas recovery and treatment combined device, and belongs to the technical field of traditional Chinese medicine forging. An observation window for observation is fixedly mounted on a door plate of the calcining furnace; a door plate of the calcining furnace is fixedly connected with a visual detection assembly for observing the color of gas in the calcining furnace; the top of the calcining furnace is fixedly connected with a thermocouple for temperature monitoring; the top of the calcining furnace is connected with an adjustable gas outlet assembly for controlling gas discharge; the adjustable gas outlet assembly is respectively connected with a fifth gas outlet pipe for directly discharging gas, a sulfur recovery assembly for recovering sulfur and an adsorption assembly for adsorbing sulfur dioxide, and the gas outlet ends of the sulfur recovery assembly and the adsorption assembly are fixedly connected with the fifth gas outlet pipe. According to the invention, recovery and treatment of toxic waste gas are realized, and harm of toxic waste gas to human body and nature is reduced to a great extent.

Description

Technical Field

[0001] This invention relates to the field of traditional Chinese medicine forging technology, specifically to a combined device and control method for the recovery and treatment of waste gas from traditional Chinese medicine forging. Background Technology

[0002] The calcination technique has a long history and is the most complex, time-consuming, labor-intensive, and costly method of processing Tibetan medicinal materials. The sulfur added during calcination sublimates at 444.6℃ (approximately 500℃ in an electric kiln), producing large amounts of pale yellow, pungent sulfur vapor. When this sulfur vapor encounters the heating element of the electric kiln or an open flame, it ignites (sulfur's ignition point is 232℃-258℃), producing blue smoke containing large amounts of toxic SO2 gas. SO2 is recognized by the World Health Organization as a Group 3 carcinogen, increasing the incidence of respiratory diseases and rapidly worsening the condition of patients with chronic diseases. SO2 is also a major chemical pollutant contributing to acid rain.

[0003] Based on this, the present invention designs a combined device and control method for the recovery and treatment of waste gas from the calcination of traditional Chinese medicine to solve the above problems. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a combined device and control method for the recovery and treatment of waste gas from the calcination of traditional Chinese medicine.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A combined device for recovering and treating waste gas from the calcination of traditional Chinese medicine, comprising a calcining furnace;

[0007] An observation window for observation is fixedly installed on the door panel of the calcining furnace;

[0008] A visual detection component for observing the color of the gas inside the calcining furnace is fixedly connected to the door panel.

[0009] A thermocouple for temperature monitoring is fixedly connected to the top of the calcining furnace;

[0010] The top of the calcining furnace is connected to a regulating gas discharge assembly for controlled gas discharge;

[0011] The adjustable gas outlet assembly is connected to a fifth gas outlet pipe for direct gas discharge, a sulfur recovery assembly for sulfur recovery, and an adsorption assembly for sulfur dioxide adsorption. The gas outlet ends of the sulfur recovery assembly and the adsorption assembly are fixedly connected to the fifth gas outlet pipe.

[0012] Furthermore, the visual inspection component includes a camera, a horizontal plate, and a servo motor. The servo motor is fixedly installed on the outer wall of the door panel of the calcining furnace, the horizontal plate is fixedly installed on the drive end of the servo motor, and the camera is fixedly installed in the mounting hole of the horizontal plate, with the camera facing the observation window during observation.

[0013] Furthermore, the adjustable gas outlet assembly includes a second gas outlet pipe, a sixth gas outlet pipe, a first three-way valve, a third straight pipe, a second three-way valve, and a third gas outlet pipe. The third straight pipe is fixedly installed on the top of the calcining furnace. The top of the third straight pipe is fixedly connected to the input end of the second three-way valve. The output end of the second three-way valve is fixedly connected to the third gas outlet pipe and the input end of the first three-way valve, respectively. The output end of the first three-way valve is fixedly connected to the sixth gas outlet pipe and the second gas outlet pipe, respectively. The sixth gas outlet pipe is fixedly connected to the fifth gas outlet pipe. The second gas outlet pipe is fixedly connected to the first tank body. The adsorption assembly is fixedly connected to the third gas outlet pipe.

[0014] Furthermore, the adsorption assembly includes an adsorption tank, a fourth outlet pipe, adsorption packing material, an upper pressure sensor, a grid plate, and a lower pressure sensor. The lower end of the inner wall of the adsorption tank is fixedly connected to the grid plate, which is filled with adsorption packing material. The upper and lower ends of the inner wall of the adsorption tank are fixedly connected to the upper and lower pressure sensors, respectively. The upper pressure sensor is located above the adsorption packing material, and the lower pressure sensor is located below the grid plate. The top of the adsorption tank is fixedly connected to the fourth outlet pipe, and the lower end of the side wall of the adsorption tank is fixedly connected to the third outlet pipe. The connection between the third outlet pipe and the adsorption tank is located at the grid plate.

[0015] Furthermore, the sulfur recovery assembly includes a condensation assembly, a heating assembly, and a liquid sulfur discharge assembly. The condensation assembly is fixedly connected to the second outlet pipe, the outer wall of the condensation assembly is fixedly connected to the heating assembly, the condensation assembly is fixedly connected to the fifth outlet pipe, and the condensation assembly is fixedly connected to the liquid sulfur discharge assembly.

[0016] Furthermore, the condensation assembly includes a first tank, a first vent pipe, a liquid inlet pipe, a liquid outlet pipe, and a coil. The bottom of the first tank is fixedly connected to the liquid outlet pipe, the upper end of the side wall of the first tank is fixedly connected to the liquid inlet pipe, the upper end of the side wall of the first tank is fixedly connected to the first vent pipe, the upper end of the coil is fixedly connected to the first vent pipe, and the lower end of the coil is fixedly connected to the second vent pipe. The first tank is connected to the heating assembly and the liquid sulfur discharge assembly.

[0017] Furthermore, the liquid sulfur discharge assembly includes a first straight pipe, a cap, a steel ball, and an alternating ball lowering assembly. The first straight pipe is fixedly installed at the bottom of the first tank body, the cap is threadedly connected to the bottom of the first straight pipe, and the first straight pipe is fixedly connected to the lower end of the coil. The alternating ball lowering assembly is fixedly installed at the top of the first tank body, and the alternating ball lowering assembly is fixedly connected to the upper end of the coil. The steel ball is movably connected to the first straight pipe and the alternating ball lowering assembly.

[0018] A control method, utilizing a combined device for recovering and treating waste gas from the calcination of traditional Chinese medicine, includes the following steps:

[0019] Step 1: Close the door of the calcining furnace, set the calcining temperature, calcining time and other parameters to start calcining, and connect the adjustable gas outlet component to the fifth gas outlet pipe. The flue gas generated by the calcining furnace is discharged to the outside through the adjustable gas outlet component and the fifth gas outlet pipe.

[0020] Step 2: When the thermocouple detects that the temperature has reached about 500℃ and the visual inspection component observes that the color of the calcining gas has changed from light yellow to yellow, the regulating gas outlet component is connected to the sulfur recovery component, the sulfur recovery component recovers sulfur, and then the gas is discharged from the fifth outlet pipe.

[0021] Step 3: The visual inspection component observes the calcination gas color change from yellow to blue. The regulating gas outlet component is then connected to the adsorption component. At this point, the smoke contains a large amount of toxic SO2 waste gas. The adsorption component adsorbs the SO2 waste gas, and the adsorbed gas is discharged through the fifth outlet pipe. The adsorption component monitors the total pressure of the gas at the inlet of the adsorption component. Total pressure of gas at the outlet of the adsorption component Then calculate the partial pressure of SO2 in the inlet of the adsorption component. Partial pressure of SO2 in the outlet gas of the adsorption module Calculate the volumetric absorption coefficient of the adsorption module. Then, based on the volume absorption coefficient When compared with a threshold, if the adsorption material is greater than or equal to the threshold, the adsorption component does not need to be replaced; if the adsorption material is less than the threshold, the adsorption component does not need to be replaced.

[0022] Partial pressure of SO2 in the inlet of the adsorption component The partial pressure of SO2 in the outlet gas of the adsorption component (7) The specific calculations are as follows:

[0023]

[0024]

[0025] The total pressure of the gas at the inlet of the adsorption component is expressed in Pa.

[0026] The pressure of SO2 in the inlet gas of the adsorption component is expressed in Pa.

[0027] The mass concentration of SO2 in the gas under standard conditions, in mg / m³ 3

[0028] Let be the total pressure of the gas at the outlet of the adsorption component, in Pa;

[0029] Let be the partial pressure of SO2 in the outlet gas of the adsorption module, in Pa.

[0030] Volume absorption coefficient The specific calculations are as follows:

[0031]

[0032] The gas flow rate of the adsorption module is expressed in kmol / h.

[0033] The height of the packing layer is in meters (m).

[0034] Let m be the cross-sectional area of ​​the adsorption component. 2 ;

[0035] , This represents the mole fraction of SO2 in the gas entering and exiting the adsorption module.

[0036] The logarithmic average driving force is the amount of gas passing through the adsorption module, in kmol / h.

[0037]

[0038] The logarithmic average driving force is the amount of gas passing through the adsorption module, in kmol / h.

[0039]

[0040] The equilibrium concentration of SO2 in the packing layer;

[0041]

[0042]

[0043]

[0044] The average pressure within the adsorption module is expressed in Pa.

[0045] Compared to existing technologies, the advantages of this invention are as follows: The furnace door is closed, and calcination begins by setting parameters such as calcination temperature and time. The adjustable gas outlet assembly connects to the fifth gas outlet pipe, allowing the flue gas generated during calcination to be discharged through both the assembly and the pipe. When the thermocouple detects that the furnace temperature reaches approximately 500°C and the visual inspection component observes the calcination gas color change from pale yellow to yellow, the adjustable gas outlet assembly connects to the sulfur recovery assembly. The sulfur recovery assembly then recovers the sulfur, which is then discharged through the fifth outlet pipe. This facilitates the recovery of solid sulfur and prevents sulfur vapor from being introduced into the adsorption assembly. To prevent sulfur vapor from damaging the adsorption components, the temperature of the calcining furnace is further increased. The sulfur vapor is burned into SO2 at high temperature. The visual detection component observes that the color of the calcining gas changes from yellow to blue. The regulating gas outlet component is connected to the adsorption component. At this time, the smoke contains a large amount of SO2 toxic waste gas. The adsorption component adsorbs the SO2 toxic waste gas. The adsorbed gas is discharged through the fifth gas outlet pipe. When the adsorption component detects that the gas pressure is lower than the set value, the regulating gas outlet component is connected to the fifth gas outlet pipe, and the gas is discharged directly, realizing the recovery and treatment of toxic waste gas, which greatly reduces the harm caused by toxic waste gas to human body and nature. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0047] Figure 1 This invention provides a three-dimensional device for the combined recovery and treatment of waste gas from the calcination of traditional Chinese medicine. Figure 1 ;

[0048] Figure 2 This is a front view of a combined device for waste gas recovery and treatment in the calcination of traditional Chinese medicine according to the present invention;

[0049] Figure 3 This is a left view of a combined device for the recovery and treatment of waste gas from the calcination of traditional Chinese medicine according to the present invention.

[0050] Figure 4 This invention provides a three-dimensional device for the combined recovery and treatment of waste gas from the calcination of traditional Chinese medicine. Figure 2 ;

[0051] Figure 5 This invention provides a three-dimensional device for the combined recovery and treatment of waste gas from the calcination of traditional Chinese medicine. Figure 3 ;

[0052] Figure 6This invention provides a three-dimensional device for the combined recovery and treatment of waste gas from the calcination of traditional Chinese medicine. Figure 4 ;

[0053] Figure 7 For along Figure 2 A sectional view along the AA direction;

[0054] Figure 8 For along Figure 2 BB direction sectional view;

[0055] Figure 9 For along Figure 3 A cross-sectional view along the CC direction;

[0056] Figure 10 A three-dimensional view of the first guide tube and its connecting structure;

[0057] Figure 11 for Figure 9 Enlarged view of point D in the middle.

[0058] The labels in the diagram represent:

[0059] 1. Calcining furnace 2. Observation window 3. Visual inspection component 31. Camera 32. Horizontal plate 33. Servo motor 4. Thermocouple 5. Sulfur recovery component 51. First tank 52. First outlet pipe 53. Protective cover 54. First straight pipe 55. Cap 56. Liquid inlet pipe 57. Upper baffle 58. Connecting block 59. Control valve 510. First guide tube 511. Second guide tube 512. Liquid outlet pipe 513. Second straight pipe 514. Coil 515. Steel ball 516. Electric heater 517. 518. Electric push rod. 519. Support frame. 520. Straight plate. 521. Upper horizontal groove. 522. N-shaped plate. 523. Lower baffle. 6. Lower horizontal groove. 6. Adjustable air outlet assembly. 61. Second air outlet pipe. 62. Sixth air outlet pipe. 63. First three-way valve. 64. Third straight pipe. 65. Second three-way valve. 66. Third air outlet pipe. 7. Adsorption assembly. 71. Adsorption tank. 72. Fourth air outlet pipe. 73. Adsorption packing. 74. Upper pressure sensor. 75. Grid plate. 76. Lower pressure sensor. 8. Fifth air outlet pipe. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0061] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0062] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-11 A combined device for the recovery and treatment of waste gas from the calcination of traditional Chinese medicine, comprising a calcining furnace 1;

[0063] An observation window 2 for observation is fixedly installed on the door panel of the calcining furnace 1;

[0064] A visual detection component 3 for observing the color of the gas inside the calcining furnace 1 is fixedly connected to the door panel of the calcining furnace 1;

[0065] A thermocouple 4 for temperature monitoring is fixedly connected to the top of the calcining furnace 1;

[0066] The top of the calcining furnace 1 is connected to a regulating gas discharge assembly 6 for controlling gas discharge;

[0067] The adjustable gas outlet assembly 6 is connected to a fifth gas outlet pipe 8 for direct gas discharge, a sulfur recovery assembly 5 for sulfur recovery, and an adsorption assembly 7 for sulfur dioxide adsorption. The gas outlet ends of the sulfur recovery assembly 5 and the adsorption assembly 7 are fixedly connected to the fifth gas outlet pipe 8.

[0068] The door of calcining furnace 1 is closed, and the calcination temperature, calcination time, and other parameters are set to start calcination. The adjustable gas outlet component 6 is connected to the fifth gas outlet pipe 8. The flue gas generated by calcination in calcining furnace 1 is discharged outward through the adjustable gas outlet component 6 and the fifth gas outlet pipe 8. When the thermocouple 4 detects that the temperature inside calcining furnace 1 reaches about 500℃ and the visual detection component 3 observes that the color of the calcined gas changes from light yellow to yellow, the adjustable gas outlet component 6 is connected to the sulfur recovery component 5. The sulfur recovery component 5 recovers sulfur and then discharges it through the fifth gas outlet pipe 8. This facilitates the recovery of solid sulfur and avoids introducing sulfur vapor into the adsorption component 7, which could cause sulfur vapor to cause... Adsorption component 7 is damaged; the temperature of calcining furnace 1 is further increased, and sulfur vapor is burned into SO2 at high temperature. The visual detection component 3 observes that the color of the calcining gas changes from yellow to blue. The regulating outlet component 6 is connected to the adsorption component 7. At this time, the smoke contains a large amount of SO2 toxic waste gas. The adsorption component 7 adsorbs the SO2 toxic waste gas. The adsorbed gas is discharged through the fifth outlet pipe 8. When the adsorption component 7 detects that the gas pressure is lower than the set value, the regulating outlet component 6 is connected to the fifth outlet pipe 8, and the gas is discharged directly, realizing the recovery and treatment of toxic waste gas, which greatly reduces the harm caused by toxic waste gas to human body and nature.

[0069] The visual inspection component 3 includes a camera 31, a horizontal plate 32, and a servo motor 33. The servo motor 33 is fixedly installed on the outer wall of the door panel of the calcining furnace 1, the horizontal plate 32 is fixedly installed on the drive end of the servo motor 33, and the camera 31 is fixedly installed in the mounting hole of the horizontal plate 32. When observing, the camera 31 faces the observation window 2.

[0070] Based on previous forging data, the time period from 10 minutes before the color change to 10 minutes after the color change is set as the observation period for camera 31, and the remaining forging time is the observation period.

[0071] Color changes include pale yellow turning into yellow,

[0072] When it is necessary to observe the color of the gas inside the calcining furnace 1, the servo motor 33 of the vision detection component 3 drives the horizontal plate 32 to rotate, the horizontal plate 32 drives the camera 31 to rotate, the camera 31 rotates to face the observation window 2, the camera 31 takes a picture of the inside of the calcining furnace 1, and the color of the gas inside the calcining furnace 1 is determined by the information in the picture.

[0073] When no observation is required, the servo motor 33 drives the horizontal plate 32 to rotate, the horizontal plate 32 drives the camera 31 to rotate, and the camera 31 rotates to the outside of the observation window 2, reducing the damage to the camera 31 caused by the light inside the calcining furnace 1.

[0074] The adjustable gas outlet assembly 6 includes a second gas outlet pipe 61, a sixth gas outlet pipe 62, a first three-way valve 63, a third straight pipe 64, a second three-way valve 65, and a third gas outlet pipe 66. The third straight pipe 64 is fixedly installed on the top of the calcining furnace 1. The top of the third straight pipe 64 is fixedly connected to the input end of the second three-way valve 65. The output end of the second three-way valve 65 is fixedly connected to the third gas outlet pipe 66 and the input end of the first three-way valve 63, respectively. The output end of the first three-way valve 63 is fixedly connected to the sixth gas outlet pipe 62 and the second gas outlet pipe 61, respectively. The sixth gas outlet pipe 62 is fixedly connected to the fifth gas outlet pipe 8. The second gas outlet pipe 61 is fixedly connected to the first tank 51. The adsorption assembly 7 is fixedly connected to the third gas outlet pipe 66.

[0075] The door of calcining furnace 1 is closed. Calcination parameters such as calcination temperature and time are set to begin. The second three-way valve 65 of the regulating gas outlet assembly 6 is opened to the first three-way valve 63. The first three-way valve 63 is opened to the sixth gas outlet pipe 62. The sixth gas outlet pipe 62 is opened to the fifth gas outlet pipe 8. The flue gas generated by calcination in calcining furnace 1 is discharged through the third straight pipe 64, the sixth gas outlet pipe 62, and the fifth gas outlet pipe 8. When the thermocouple 4 detects that the temperature reaches approximately 500℃ and the visual inspection assembly 3 observes that the color of the calcining gas changes from pale yellow to yellow, the second three-way valve 65 of the regulating gas outlet assembly 6 is opened to the first three-way valve 63. The first three-way valve 63 is opened through the second gas outlet pipe 61. The second gas outlet pipe 61 is opened to the sulfur recovery assembly 5. The gas from calcining furnace 1 is discharged through the third straight pipe 64 and the second gas outlet pipe 8. The gas enters the sulfur recovery component 5 through the gas pipe 61. The sulfur recovery component 5 recovers sulfur and then discharges it through the fifth gas outlet pipe 8. This facilitates the recovery of solid sulfur and avoids introducing sulfur vapor into the adsorption component 7, which could damage the adsorption component 7. The temperature of the calcining furnace 1 is further increased, and the sulfur vapor is burned into SO2 at high temperature. The visual detection component 3 observes that the color of the calcining gas changes from yellow to blue. The second three-way valve 65 of the regulating gas outlet component 6 is opened to the third gas outlet pipe 66, which is then opened to the adsorption component 7. At this time, the smoke contains a large amount of SO2 toxic waste gas. The adsorption component 7 adsorbs the SO2 toxic waste gas, and the adsorbed gas is discharged through the fifth gas outlet pipe 8. This achieves the recovery and treatment of toxic waste gas, greatly reducing the harm caused by toxic waste gas to human health and nature.

[0076] The adsorption assembly 7 includes an adsorption tank 71, a fourth outlet pipe 72, adsorption packing material 73, an upper pressure sensor 74, a grid plate 75, and a lower pressure sensor 76. The lower end of the inner wall of the adsorption tank 71 is fixedly connected to the grid plate 75. The grid plate 75 is filled with adsorption packing material 73. The upper pressure sensor 74 and the lower pressure sensor 76 are fixedly connected to the upper and lower ends of the inner wall of the adsorption tank 71, respectively. The upper pressure sensor 74 is located above the adsorption packing material 73, and the lower pressure sensor 76 is located below the grid plate 75. The top of the adsorption tank 71 is fixedly connected to the fourth outlet pipe 72. The lower end of the side wall of the adsorption tank 71 is fixedly connected to the third outlet pipe 66. The connection between the third outlet pipe 66 and the adsorption tank 71 is located at the grid plate 75.

[0077] The temperature of the calcining furnace 1 is continuously increased, and the sulfur vapor is burned into SO2 at high temperature. The visual detection component 3 observes that the color of the calcining gas changes from yellow to blue. The second three-way valve 65 of the regulating gas outlet component 6 is connected to the third gas outlet pipe 66, and the third gas outlet pipe 66 is connected to the adsorption tank 71 of the adsorption component 7. The lower pressure sensor 76 detects the gas pressure of the inlet gas. The adsorption packing 73 on the grid plate 75 adsorbs SO2 toxic waste gas. The upper pressure sensor 74 detects the gas pressure after adsorption by the adsorption packing 73. The adsorption component 7 adsorbs SO2 toxic waste gas. The adsorbed gas is discharged through the fourth gas outlet pipe 72 to the fifth gas outlet pipe 8, and then discharged from the fifth gas outlet pipe 8, realizing the recovery and treatment of toxic waste gas, which greatly reduces the harm caused by toxic waste gas to human body and nature.

[0078] When the pressure sensor 76 detects that the air pressure is lower than the set value, the second three-way valve 65 of the adjustable air outlet assembly 6 is connected to the first three-way valve 63, the first three-way valve 63 is connected to the sixth air outlet pipe 62, the sixth air outlet pipe 62 is connected to the fifth air outlet pipe 8, and the flue gas generated by the calcining furnace 1 is discharged to the outside through the third straight pipe 64, the sixth air outlet pipe 62 and the fifth air outlet pipe 8.

[0079] The sulfur recovery assembly 5 includes a condensation assembly, a heating assembly, and a liquid sulfur discharge assembly. The condensation assembly is fixedly connected to the second outlet pipe 61, the outer wall of the condensation assembly is fixedly connected to the heating assembly, the condensation assembly is fixedly connected to the fifth outlet pipe 8, and the condensation assembly is fixedly connected to the liquid sulfur discharge assembly.

[0080] The condensation assembly includes a first tank 51, a first vent pipe 52, a liquid inlet pipe 56, a liquid outlet pipe 512, and a coil 514. The bottom of the first tank 51 is fixedly connected to the liquid outlet pipe 512, the upper end of the side wall of the first tank 51 is fixedly connected to the liquid inlet pipe 56, the upper end of the side wall of the first tank 51 is fixedly connected to the first vent pipe 52, the upper end of the coil 514 is fixedly connected to the first vent pipe 52, and the lower end of the coil 514 is fixedly connected to the second vent pipe 61. The first tank 51 is connected to a heating assembly and a liquid sulfur discharge assembly.

[0081] The first vent pipe 52 is fixedly connected to the fifth vent pipe 8;

[0082] The liquid outlet pipe 512 and the liquid inlet pipe 56 are fixedly connected to the input and output ends of the refrigeration equipment;

[0083] The heating assembly includes a protective cover 53 and an electric heater 516. The protective cover 53 is fixedly installed on the outer wall of the first tank 51, and the electric heater 516 is fixedly installed inside the protective cover 53.

[0084] The liquid sulfur discharge assembly includes a first straight pipe 54, a cap 55, a steel ball 515, and an alternating ball lowering assembly. The first straight pipe 54 is fixedly installed at the bottom of the first tank 51. The cap 55 is threadedly connected to the bottom of the first straight pipe 54. The first straight pipe 54 is fixedly connected to the lower end of the coil 514. The alternating ball lowering assembly is fixedly installed at the top of the first tank 51. The alternating ball lowering assembly is fixedly connected to the upper end of the coil 514. The steel ball 515 is movably connected to the first straight pipe 54 and the alternating ball lowering assembly.

[0085] The alternating ball-feeding assembly includes an upper baffle 57, a connecting block 58, a control valve 59, a first ball guide tube 510, a second ball guide tube 511, a second straight tube 513, an electric push rod 517, a support frame 518, a straight plate 519, an upper transverse groove 520, an n-shaped plate 521, and a lower baffle 522. The second straight tube 513 is fixedly installed on the top of the first tank 51. The top of the second straight tube 513 is connected to the upper end of the coil 514. The control valve 59 is installed on the second straight tube 513. The top of the second straight tube 513 is connected to the first ball guide tube 510 and the second ball guide tube 511. The side wall of the first ball guide tube 510 is connected to the support frame 518. 18. Fixed connection: support frame 518 is fixedly connected to electric push rod 517. The drive end of electric push rod 517 is fixedly connected to straight plate 519. The bottom of straight plate 519 is fixedly connected to n-shaped plate 521. The bottom of the outer end of n-shaped plate 521 is fixedly connected to lower baffle 522. The inner end of first guide tube 510 and second guide tube 511 is provided with a lower transverse groove 523 that is slidably connected to it. The upper side wall of n-shaped plate 521 is fixedly connected with connecting block 58. The outer end of connecting block 58 is fixedly connected to upper baffle 57. The outer end face of first guide tube 510 and second guide tube 511 is slidably connected to upper baffle 57 with upper transverse groove 520.

[0086] When the lower baffle 522 near the first ball tube 510 is in contact with the lower transverse groove 523 of the first ball tube 510, the upper baffle 57 near the second ball tube 511 is in contact with the upper transverse groove 520 of the second ball tube 511; when the lower baffle 522 near the second ball tube 511 is separated from the lower transverse groove 523 of the second ball tube 511; when the upper baffle 57 near the first ball tube 510 is separated from the upper transverse groove 520 of the first ball tube 510.

[0087] When the lower baffle 522 near the second guide tube 511 is in close contact with the lower transverse groove 523 of the second guide tube 511, the upper baffle 57 near the first guide tube 510 is in close contact with the upper transverse groove 520 of the first guide tube 510; when the lower baffle 522 near the first guide tube 510 is separated from the lower transverse groove 523 of the first guide tube 510; when the upper baffle 57 near the second guide tube 511 is separated from the upper transverse groove 520 of the second guide tube 511, the first guide tube 510 and the second guide tube 511 are in close contact with the steel ball 515 and are in rolling contact.

[0088] The inner diameter of the first guide tube 510 is the same as that of the second straight tube 513, the coil 514 and the first straight tube 54. The inner diameter of the first guide tube 510 is 1.1 times that of the second guide tube 511.

[0089] The steel ball 515 inside the first guide tube 510 is a large-sized steel ball 515, and it is in close contact and sliding connection with the first guide tube 510, the second straight tube 513, the coil 514 and the first straight tube 54. The steel ball 515 inside the second guide tube 511 is a small-sized steel ball 515, and the outer diameter of the large-sized steel ball 515 is 1.1 times the outer diameter of the small-sized steel ball 515.

[0090] When thermocouple 4 detects that the temperature has reached approximately 500℃ and visual inspection component 3 observes that the color of the calcining gas has changed from pale yellow to yellow, control valve 59 closes. The second three-way valve 65 of the regulating gas outlet component 6 is then connected to the first three-way valve 63. The first three-way valve 63 is connected through the second gas outlet pipe 61, which in turn connects to the coil 514 of the condenser component of the sulfur recovery component 5. The cooled heat transfer medium enters the first tank 51 through the liquid outlet pipe 512 and is then discharged through the liquid inlet pipe 56. The cooled heat transfer medium cools the coil 514. The gas from the calcining furnace 1 enters the coil 514 through the third straight pipe 64 and the second gas outlet pipe 61. Sulfur vapor and the coil... The sulfur in tube 514 is fixed to the inner wall of the coil 514. Then, the gas from the first outlet pipe 52 enters the fifth outlet pipe 8 and is discharged from the fifth outlet pipe 8. After the sulfur vapor is recovered, the cap 55 is removed from below the first straight pipe 54. The electric heater 516 of the heating assembly heats the calcining furnace 1. After the calcining furnace 1 is heated, the heating medium inside the calcining furnace 1 is heated. The heated heating medium heats the coil 514. The heated coil 514 heats the sulfur adhering to the inner wall of the coil 514 into liquid sulfur. The liquid sulfur is discharged outward through the first straight pipe 54. The electric push rod 517 drives the straight plate 519 to move. The straight plate 519 drives the n-shaped plate 521 towards the first guide tube 51. Move 0, place the large steel ball 515 into the first guide tube 510, the large steel ball 515 is in contact with the lower baffle 522 inside the first guide tube 510, and place the small steel ball 515 into the second guide tube 511, the small steel ball 515 is in contact with the upper baffle 57 inside the second guide tube 511. The control valve 59 opens, the electric push rod 517 drives the straight plate 519 to move, the straight plate 519 drives the n-shaped plate 521 to move towards the second guide tube 511, the lower baffle 522 near the first guide tube 510 separates from the lower transverse groove 523 opened in the first guide tube 510, and the upper baffle 57 near the first guide tube 510 separates from the first guide tube 510. The upper transverse groove 520 of the first guide tube 510 contacts the upper baffle 57 and the lower baffle 522. The large steel ball 515 enters the second straight tube 513 along the first guide tube 510, then enters the coil 514, and finally exits from the first straight tube 54, which facilitates the ejection of liquid sulfur in the coil 514. At the same time, the upper baffle 57 in the second guide tube 511 moves to the outside of the upper transverse groove 520 of the second guide tube 511, and the lower baffle 522 at the second guide tube 511 moves to the lower transverse groove 523 in the second guide tube 511. The small steel ball 515 in the second guide tube 511 falls onto the lower baffle 522 in the second guide tube 511.

[0091] The electric push rod 517 drives the straight plate 519 to move, and the straight plate 519 drives the n-shaped plate 521 to move towards the first guide tube 510. The lower baffle 522 near the second guide tube 511 separates from the lower transverse groove 523 opened in the second guide tube 511, and the upper baffle 57 near the second guide tube 511 contacts the upper transverse groove 520 opened in the second guide tube 511. The small steel ball 515 between the upper baffle 57 and the lower baffle 522 in the second guide tube 511 moves along... The second guide tube 511 enters the second straight tube 513, and then enters the coil 514. The coil 514 does not obstruct the movement of the small steel ball 515. The moving small steel ball 515 collides with the large steel ball 515 inside the coil 514. When the liquid sulfur in the coil 514 obstructs the movement of the large steel ball 515, the small steel ball 515 provides kinetic energy to the large steel ball 515, preventing the large steel ball 515 from getting stuck inside the coil 514.

[0092] Alternating the above actions helps the large steel ball 515 to discharge the liquid sulfur in the coil 514, making it easier to push out the liquid sulfur in the coil 514. The sulfur recovery component 5 then performs sulfur recovery, which facilitates the recovery of solid sulfur and avoids introducing sulfur vapor into the adsorption component 7, so as to prevent the sulfur vapor from damaging the adsorption component 7.

[0093] Example 2: In some embodiments, as a preferred embodiment of the present invention, a control method utilizing a combined device for recovering and treating waste gas from the calcination of traditional Chinese medicine includes the following steps:

[0094] Step 1: Close the door of the calcining furnace 1, set the calcining temperature, calcining time and other parameters of the calcining furnace 1 to start calcination, and connect the adjustable gas outlet component 6 to the fifth gas outlet pipe 8. The flue gas generated by the calcination of the calcining furnace 1 is discharged to the outside through the adjustable gas outlet component 6 and the fifth gas outlet pipe 8.

[0095] Step 2: When thermocouple 4 detects that the temperature has reached about 500℃ and visual inspection component 3 observes that the color of the calcination gas has changed from light yellow to yellow, the regulating gas outlet component 6 is connected to the sulfur recovery component 5. The sulfur recovery component 5 recovers sulfur and then discharges it from the fifth gas outlet pipe 8.

[0096] Step 3: The visual inspection component 3 observes the color of the calcination gas change from yellow to blue. The regulating gas outlet component 6 is then connected to the adsorption component 7. At this time, the smoke contains a large amount of SO2 toxic waste gas. The adsorption component 7 adsorbs the SO2 toxic waste gas, and the adsorbed gas is discharged through the fifth gas outlet pipe 8. The pressure sensor 76 monitors the total pressure of the gas at the inlet of the adsorption tank 71. The upper pressure sensor 74 monitors the total pressure of the gas at the outlet of the adsorption tank 71. Then calculate the partial pressure of SO2 in the inlet of adsorption tank 71. The partial pressure of SO2 in the outlet gas of adsorption component 7 Calculate the volume absorption coefficient of adsorption component 7. Then, based on the volume absorption coefficient When compared with a threshold, if the adsorption component 7 is greater than or equal to the threshold, the adsorption material does not need to be replaced; if the adsorption component 7 is less than the threshold, the adsorption material does not need to be replaced.

[0097] The threshold value is the critical value for replacing the absorption coefficient of the adsorption packing material 73.

[0098] Partial pressure of SO2 in the inlet of adsorption component 7 The partial pressure of SO2 in the outlet gas of adsorption component 7 The specific calculations are as follows:

[0099]

[0100]

[0101] The total pressure of the gas at the inlet of adsorption tank 71 is given in Pa.

[0102] The partial pressure of SO2 in the inlet gas of adsorption tank 71 is given in Pa.

[0103] The mass concentration of SO2 in the gas under standard conditions, in mg / m³ 3

[0104] The total pressure of the gas at the outlet of adsorption tank 71 is given in Pa.

[0105] Let be the partial pressure of SO2 in the outlet gas of adsorption tank 71, in Pa.

[0106] Volume absorption coefficient The specific calculations are as follows:

[0107]

[0108] The gas flow rate in adsorption tank 71 is kmol / h.

[0109] The height of the adsorption packing material is 73 m.

[0110] Let m be the cross-sectional area of ​​the adsorption tank 71. 2 ;

[0111] , The mole fraction of SO2 in the gas entering and exiting adsorption tank 71;

[0112] The logarithmic average driving force is the amount of gas passing through adsorption component 7, in kmol / h;

[0113]

[0114]

[0115] The logarithmic average driving force is the amount of gas passing through adsorption component 7, in kmol / h;

[0116]

[0117] The equilibrium concentration of SO2 in the adsorption packing material;

[0118]

[0119]

[0120]

[0121] The average pressure within the adsorption component 7 is expressed in Pa.

[0122] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined device for waste gas recovery and treatment in the calcination of traditional Chinese medicine, comprising a calcining furnace (1), characterized in that: An observation window (2) for observation is fixedly installed on the door panel of the calcining furnace (1); A visual detection component (3) for observing the color of the gas inside the calcining furnace (1) is fixedly connected to the door panel of the calcining furnace (1). The top of the calcining furnace (1) is fixedly connected to a thermocouple (4) for temperature monitoring; The top of the calcining furnace (1) is connected to a regulating gas discharge assembly (6) for controlling gas discharge. The adjustable gas outlet assembly (6) is connected to a fifth gas outlet pipe (8) for direct gas discharge, a sulfur recovery assembly (5) for sulfur recovery, and an adsorption assembly (7) for sulfur dioxide adsorption. The gas outlet ends of the sulfur recovery assembly (5) and the adsorption assembly (7) are fixedly connected to the fifth gas outlet pipe (8).

2. The combined device for waste gas recovery and treatment in the calcination of traditional Chinese medicine according to claim 1, characterized in that, The visual inspection component (3) includes a camera (31), a horizontal plate (32) and a servo motor (33). The servo motor (33) is fixedly installed on the outer wall of the door panel of the calcining furnace (1). The horizontal plate (32) is fixedly installed on the drive end of the servo motor (33). The camera (31) is fixedly installed in the mounting hole of the horizontal plate (32). When observing, the camera (31) faces the observation window (2).

3. The combined device for waste gas recovery and treatment in the calcination of traditional Chinese medicine according to claim 2, characterized in that, The adjustable gas outlet assembly (6) includes a second gas outlet pipe (61), a sixth gas outlet pipe (62), a first three-way valve (63), a third straight pipe (64), a second three-way valve (65), and a third gas outlet pipe (66). The third straight pipe (64) is fixedly installed on the top of the calcining furnace (1). The top of the third straight pipe (64) is fixedly connected to the input end of the second three-way valve (65). The output end of the second three-way valve (65) is fixedly connected to the third gas outlet pipe (66) and the input end of the first three-way valve (63). The output end of the first three-way valve (63) is fixedly connected to the sixth gas outlet pipe (62) and the second gas outlet pipe (61). The sixth gas outlet pipe (62) is fixedly connected to the fifth gas outlet pipe (8). The second gas outlet pipe (61) is fixedly connected to the first tank (51). The adsorption assembly (7) is fixedly connected to the third gas outlet pipe (66).

4. The combined device for waste gas recovery and treatment in the calcination of traditional Chinese medicine according to claim 3, characterized in that, The adsorption assembly (7) includes an adsorption tank (71), a fourth outlet pipe (72), an adsorption packing (73), an upper pressure sensor (74), a grid plate (75), and a lower pressure sensor (76). The lower end of the inner wall of the adsorption tank (71) is fixedly connected to the grid plate (75), and the grid plate (75) is filled with adsorption packing (73). The upper pressure sensor (74) and the lower pressure sensor (76) are fixedly connected to the upper and lower ends of the inner wall of the adsorption tank (71), respectively. The upper pressure sensor (74) is located above the adsorption packing (73), and the lower pressure sensor (76) is located below the grid plate (75). The top of the adsorption tank (71) is fixedly connected to the fourth outlet pipe (72), and the lower end of the side wall of the adsorption tank (71) is fixedly connected to the third outlet pipe (66). The connection between the third outlet pipe (66) and the adsorption tank (71) is located at the grid plate (75).

5. The combined device for waste gas recovery and treatment in the calcination of traditional Chinese medicine according to claim 4, characterized in that, The sulfur recovery assembly (5) includes a condensation assembly, a heating assembly and a liquid sulfur discharge assembly. The condensation assembly is connected to the second outlet pipe (61) and fixedly connected to the heating assembly. The outer wall of the condensation assembly is fixedly connected to the heating assembly. The condensation assembly is fixedly connected to the fifth outlet pipe (8) and the condensation assembly is connected to the liquid sulfur discharge assembly and fixedly connected to it.

6. The combined device for waste gas recovery and treatment in the calcination of traditional Chinese medicine according to claim 5, characterized in that, The condensation assembly includes a first tank (51), a first vent pipe (52), a liquid inlet pipe (56), a liquid outlet pipe (512), and a coil (514). The bottom of the first tank (51) is connected to the liquid outlet pipe (512) in a fixed manner. The upper end of the side wall of the first tank (51) is connected to the liquid inlet pipe (56) in a fixed manner. The upper end of the side wall of the first tank (51) is connected to the first vent pipe (52) in a fixed manner. The upper end of the coil (514) is connected to the first vent pipe (52) in a fixed manner. The lower end of the coil (514) is connected to the second vent pipe (61). The first tank (51) is connected to the heating assembly and the liquid sulfur discharge assembly.

7. The combined device for waste gas recovery and treatment in the calcination of traditional Chinese medicine according to claim 6, characterized in that, The liquid sulfur discharge assembly includes a first straight pipe (54), a cap (55), a steel ball (515), and an alternating ball lowering assembly. The first straight pipe (54) is fixedly installed at the bottom of the first tank (51). The cap (55) is threadedly connected to the bottom of the first straight pipe (54). The first straight pipe (54) is fixedly connected to the lower end of the coil (514). The alternating ball lowering assembly is fixedly installed at the top of the first tank (51). The alternating ball lowering assembly is fixedly connected to the upper end of the coil (514). The steel ball (515) is movably connected to the first straight pipe (54) and the alternating ball lowering assembly.

8. A control method, utilizing the combined device for waste gas recovery and treatment from the calcination of traditional Chinese medicine as described in any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Close the door of the calcining furnace (1), set the calcining temperature, calcining time and other parameters of the calcining furnace (1) to start calcining, and connect the adjustable gas outlet component (6) to the fifth gas outlet pipe (8). The flue gas generated by the calcining furnace (1) is discharged to the outside through the adjustable gas outlet component (6) and the fifth gas outlet pipe (8). Step 2: When the thermocouple (4) detects that the temperature reaches about 500℃ and the visual detection component (3) observes that the color of the calcining gas changes from light yellow to yellow, the regulating gas outlet component (6) is connected to the sulfur recovery component (5), the sulfur recovery component (5) performs sulfur recovery, and then discharges it from the fifth gas outlet pipe (8). Step 3: The visual inspection component (3) observes the color of the calcined gas change from yellow to blue. The regulating gas outlet component (6) is connected to the adsorption component (7). At this time, the smoke contains a large amount of SO2 toxic waste gas. The adsorption component (7) adsorbs the SO2 toxic waste gas. The adsorbed gas is discharged through the fifth gas outlet pipe (8). The adsorption component (7) monitors the total pressure of the gas at the inlet of the adsorption component (7). Total pressure of gas at the outlet of adsorption component (7) Then calculate the partial pressure of SO2 in the inlet of the adsorption component (7). The partial pressure of SO2 in the outlet gas of the adsorption component (7) Calculate the volume absorption coefficient of adsorption component (7). Then, based on the volume absorption coefficient When compared with the threshold, if the adsorption component (7) is greater than or equal to the threshold, the adsorption component (7) does not need to be replaced with the adsorption material; if the adsorption component (7) is less than the threshold, the adsorption component (7) does not need to be replaced with the adsorption material.

9. The control method according to claim 8, characterized in that, Partial pressure of SO2 in the inlet of adsorption component (7) The partial pressure of SO2 in the outlet gas of the adsorption component (7) The specific calculations are as follows: The total pressure of the gas at the inlet of the adsorption component (7), in Pa; The partial pressure of SO2 in the inlet gas of the adsorption component (7), in Pa; The mass concentration of SO2 in the gas under standard conditions, in mg / m³ 3 The total pressure of the gas at the outlet of the adsorption component (7), in Pa; The partial pressure of SO2 in the outlet gas of the adsorption component (7) is Pa.

10. The control method according to claim 9, characterized in that, Volume absorption coefficient The specific calculations are as follows: The gas flow rate of the adsorption component (7) is kmol / h; The height of the packing layer is in meters (m). m is the cross-sectional area of ​​the adsorption component (7). 2 ; , The mole fraction of SO2 in the gas entering and exiting the adsorption component (7); The logarithmic average amount of gas passing through the adsorption component (7) is expressed in kmol / h. The equilibrium concentration of SO2 in the packing layer; The average pressure inside the adsorption component (7) is Pa.

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