Medium-temperature carbonization treatment device and method based on low-temperature drying of sludge

Abstract

The invention discloses a medium-temperature carbonization treatment device and method based on sludge low-temperature drying, which are characterized in that the current carbonization rate can be intelligently determined in real time according to the feeding speed and the carbonization temperature in a carbonization furnace in the sludge carbonization treatment process through the arrangement of a variable-speed temperature release assembly and a temperature control regulator; by combining parameter measurement of a material speed value and a temperature release value and controlling a speed release coefficient, control signal output is realized, finally rotating speed adjustment, screw pitch adjustment and carbonization temperature adjustment of a temperature release assembly are completed, the purpose of controllable carbonization rate is achieved, rotary carbonization operation can be carried out in a built-in combustible gas source injection mode, and the carbonization efficiency is improved. The phenomenon of incomplete sludge carbonization caused by rotary sealing failure and jacket heat supply loss due to long-term use of high-temperature flue gas and sludge is avoided, temperature prediction and real-time temperature control and material speed adjustment are realized according to dynamic characteristic change in the sludge carbonization process, and smooth sludge carbonization is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge carbonization treatment, and in particular to a medium-temperature carbonization treatment device and method based on low-temperature drying of sludge. Background Art

[0002] Low-temperature sludge drying is carried out at a temperature range of 60°C to 80°C. Through evaporation and other mechanisms, the water in the sludge is removed to increase the solid content of the sludge. The principle is to send the sludge with a moisture content of about 80% into the treatment equipment through mechanical dehydration, and granulate or cut into strips according to the characteristics of the mud cake, and spread it on the mesh belt. Dry hot air is sent in from the bottom of the mesh belt, and the water in the sludge absorbs heat and vaporizes. The generated water vapor rises to the top of the mesh belt and is collected and discharged;

[0003] The medium-temperature carbonization treatment of sludge is a carbonization technology carried out after the sludge is dried. No pressure is applied during the process. The sludge is dried to a moisture content of about 90%, and then enters the carbonization furnace for decomposition. This technical process will produce oil, reaction water (steam condensate), biogas (uncondensed air) and solid carbonized products.

[0004] In the carbonization process, the carbonization furnace generally adopts external heating rotary carbonization operation. After long-term use, the high-temperature flue gas contacts the sludge, and the rotary seal fails and the jacket loses heat, which will lead to incomplete sludge carbonization. In addition, there is a lack of temperature control and material speed adjustment for dynamic characteristic changes during the sludge carbonization process, which affects the smooth progress of sludge carbonization.

[0005] To this end, this application proposes a solution. Summary of the invention

[0006] The purpose of the present invention is to provide a medium-temperature carbonization treatment device and method based on low-temperature drying of sludge, which is used to solve the problem that sludge carbonization cannot proceed smoothly due to the lack of temperature control and material speed adjustment for dynamic characteristic changes during the sludge carbonization process.

[0007] The object of the present invention can be achieved by the following technical scheme: a medium-temperature carbonization treatment device based on low-temperature drying of sludge, comprising a connected inclined tank body and a horizontal tank body, and a control panel is embedded outside the inclined tank body, a transmission rod 1 and a transmission rod 2 are respectively installed in the middle of the inner part of the inclined tank body and the horizontal tank body, and the outer ends of the transmission rod 1 and the transmission rod 2 are respectively rotatably connected to the first propulsion rod and the second propulsion rod, and the transmission rod 1 and the transmission rod 2 are both installed with a temperature release component;

[0008] The temperature release assembly comprises a spiral heat pipe 1 and a spiral heat pipe 2 respectively attached to the inner wall of the inclined tank body and the horizontal tank body, a closed spiral cover is installed on the inner side of the spiral of the spiral heat pipe 1, and a heat transfer hole is opened on the closed spiral cover, the spiral heat pipe 1 and the spiral heat pipe 2 have the same spiral angle and the torsion angle of the spiral line is 30°;

[0009] A temperature measuring mechanism is installed at the upper end of the inclined tank body, and the temperature measuring mechanism includes a temperature measuring and pressure regulating tank connected to the interior of the inclined tank body. A U-shaped tube is installed on the top of the temperature measuring and pressure regulating tank through a conducting tube. The temperature measuring and pressure regulating tank, the conducting tube and the U-shaped tube together form an "S"-shaped connecting cavity.

[0010] It is further configured as follows: a connecting pipe connected to the inclined tank body is installed at the lower end of the temperature measuring and pressure regulating tank, a rotating rod extending into the connecting pipe is installed at the middle part of the upper end of the temperature measuring and pressure regulating tank, and a diffusion blade is connected to the outer shell of the rotating rod located in the temperature measuring and pressure regulating tank.

[0011] It is further configured as follows: a driving motor q is installed above the middle of the temperature measuring and pressure regulating tank corresponding to the conducting tube, the output end of the motor passes through the conducting tube and is connected to the rotating rod, and the lower end of the diffusion blade contacts the inner wall of the temperature measuring and pressure regulating tank.

[0012] It is further configured as follows: an upper cover body is installed at the upper end of the inclined tank body, a lower cover body is installed at one end of the horizontal tank body away from the inclined tank body, and the first propulsion rod and the second propulsion rod respectively penetrate the outer parts of the upper cover body and the lower cover body and are connected to electric push rods.

[0013] It is further configured as follows: a support fork frame is commonly installed at the upper end of the connection between the inclined tank body and the horizontal tank body, and the lower end of the support fork frame is rotatably connected to the transmission rod 1 and the transmission rod 2 respectively.

[0014] It is further configured as follows: an upper fixing rod and a lower fixing rod are respectively installed at the ends of the transmission rod 1 and the transmission rod 2 away from the supporting fork frame, and the upper fixing rod and the lower fixing rod are respectively connected to the spiral heat pipe 1 and the spiral heat pipe 2.

[0015] It is further configured as follows: a fixing plate connected to the inclined tank body is installed at the bottom of the U-shaped tube, a cone cover is installed at the upper end of the U-shaped tube away from the conducting tube, and a scale line is opened on the outer side of the upper end of the U-shaped tube away from the conducting tube.

[0016] It is further configured as follows: the control panel is equipped with a feedforward control module, and the feedforward control module includes a feed monitoring unit, a drying temperature control analysis unit, a stable operation control unit and a processor that are communicatively connected to each other; the feed monitoring unit is used to collect the material speed value and the temperature release value during the sludge carbonization treatment, and send the material speed value and the temperature release value to the drying temperature control analysis unit via the processor, and the drying temperature control analysis unit performs a risk analysis during the sludge carbonization according to the received material speed value and temperature release value, and generates an action signal to send to the stable operation control unit; the stable operation control unit receives the action signal to control the relevant components to move.

[0017] The present invention also proposes a medium-temperature carbonization treatment method based on low-temperature drying of sludge, comprising the following steps:

[0018] S1: First, the sludge is injected into the inclined tank for carbonization treatment, and the high-temperature gas is released through the spiral heat pipe 1 and the spiral heat pipe 2;

[0019] S2: The sludge enters the inclined tank and is fed evenly by the continuously rotating spiral heat pipes 1 and 2. At the same time, the heat transfer holes on the spiral heat pipes 1 and 2 release the high-temperature gas evenly to achieve carbonization treatment.

[0020] S3: During the sludge carbonization process in S2, the material speed value and the temperature release value are obtained according to the feedforward control module, and the material speed value and the temperature release value are substituted into the calculation formula of the speed release coefficient to obtain the speed release coefficient, and the speed release coefficient is compared with the speed release coefficient threshold to output a speed increase and temperature reduction signal and a speed decrease and temperature increase signal, and the speed adjustment, pitch adjustment and carbonization temperature adjustment of the temperature release component are performed synchronously;

[0021] S4: In S3, when the speed-up and temperature-down signal is output, a control signal is sent to the drive motor Q, the electric push rod and the combustible power supply device. The drive motor Q drives the spiral heat pipe 1 and the spiral heat pipe 2 to rotate through the transmission rod 1 and the transmission rod 2 respectively, so that the spiral heat pipe 1 and the spiral heat pipe 2 respectively in the inclined tank body and the horizontal tank body complete the speed-up rotation, that is, the sludge to be carbonized in the inclined tank body and the horizontal tank body respectively realizes the speed-up operation. At the same time, the electric push rod drives the transmission rod 1 and the transmission rod 2 to complete the horizontal movement. At this time, the spiral heat pipe 1 and the spiral heat pipe 2 shrink in the axial position of the inclined tank body and the horizontal tank body respectively, that is, the spiral heat pipe 1 and the spiral heat pipe 2 reduce the pitch, and finally the sludge in the carbonization furnace body is quickly discharged, the feeding blockage of the sludge to be carbonized in the carbonization furnace is avoided, and uniform carbonization is achieved;

[0022] The charge amount of combustible gas is simultaneously reduced, and the combustible gas is ejected outward through the heat transfer holes on the spiral heat pipe 1 and the spiral heat pipe 2, that is, the combustion temperature in the carbonization furnace is reduced. The combined effect of the two can increase the sludge feeding speed and reduce the combustion temperature in the carbonization furnace.

[0023] S5: In S3, when the speed reduction and temperature increase signal is output, a control signal is sent to the drive motor Q and the combustible power supply device, and the drive motor Q drives the spiral heat pipe 1 and the spiral heat pipe 2 to rotate through the transmission rod 1 and the transmission rod 2 respectively, so that the spiral heat pipe 1 and the spiral heat pipe 2 respectively in the inclined tank body and the horizontal tank body complete the speed reduction rotation, that is, the sludge to be carbonized in the inclined tank body and the horizontal tank body respectively slows down, and at the same time, the electric push rod drives the transmission rod 1 and the transmission rod 2 to complete the horizontal movement. At this time, the spiral heat pipe 1 and the spiral heat pipe 2 expand in the axial position of the inclined tank body and the horizontal tank body respectively, that is, the spiral heat pipe 1 and the spiral heat pipe 2 expand their pitches, and finally the sludge in the carbonization furnace body is discharged at a reduced speed, so as to avoid the phenomenon of too fast feeding of the sludge to be carbonized in the carbonization furnace and achieve uniform carbonization;

[0024] The amount of combustible gas charged is increased synchronously, and is ejected outward through the heat transfer holes on the spiral heat pipe 1 and the spiral heat pipe 2, that is, the combustion temperature in the carbonization furnace is increased. The combined effect of the two can reduce the sludge feeding speed and increase the combustion temperature in the carbonization furnace.

[0025] S6: After the sludge is carbonized, it is discharged through the opening of the lower cover.

[0026] The present invention has the following beneficial effects:

[0027] 1. The present invention aims to solve the problem that the sludge carbonization process cannot be smoothly carried out due to the lack of temperature control and material speed adjustment for dynamic characteristic changes; the variable speed temperature release component and temperature control adjustment are set, so that the current carbonization rate can be intelligently determined in real time according to the feeding speed and carbonization temperature in the carbonization furnace during the sludge carbonization process, and the parameter determination of the material speed value and the temperature release value is combined to realize the control signal output by speed release coefficient control, and finally the speed adjustment, pitch adjustment and carbonization temperature adjustment of the temperature release component are completed to achieve the purpose of controllable carbonization rate, and at the same time, rotary carbonization operation can be carried out in the form of built-in combustible gas source injection, avoiding the phenomenon of incomplete sludge carbonization caused by the failure of the rotary seal and the loss of jacket heat supply caused by the contact between high-temperature flue gas and sludge after long-term use, realizing temperature prediction and real-time temperature control and material speed adjustment for dynamic characteristic changes in the sludge carbonization process, which is conducive to the smooth progress of sludge carbonization;

[0028] 2. During the sludge carbonization process, the high-temperature flue gas generated in the carbonization furnace is injected into the U-shaped tube through the temperature measuring and pressure regulating tank and the conducting tube. At this time, the filling liquid in the U-shaped tube is affected by the air pressure in the furnace body, resulting in a liquid level difference, which is compared one by one with the corresponding constant air pressure change standard, so as to obtain the temperature change difference in the current carbonization furnace body, which is convenient for the feedforward control module to measure the parameters in the carbonization furnace body and make corresponding action guidance; the diffusion blades are also driven to rotate by the rotating rod, so that the high-temperature and high-pressure gas in the carbonization furnace body can be slowly released through the air pressure dispersion structure in the temperature measuring and pressure regulating tank, reducing the impact of the high-pressure gas directly on the filling liquid in the U-shaped tube, thereby effectively ensuring that the temperature measuring mechanism can make accurate indications of the temperature changes in the carbonization furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention 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 described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a side cross-sectional schematic diagram of the present invention;

[0032] Figure 3 It is a structural diagram of the temperature release assembly of the present invention;

[0033] Figure 4 The figure is a disassembled diagram of the warm-release assembly of the present invention;

[0034] Figure 5 It is a structural disassembly diagram of the temperature measuring mechanism of the present invention;

[0035] Figure 6 It is a cutaway structural diagram of the temperature measuring mechanism of the present invention;

[0036] Figure 7 It is a schematic diagram of the installation structure of spiral heat pipe 1 and spiral heat pipe 2 of the present invention.

[0037] In the figure: 1. inclined tank body; 2. horizontal tank body; 3. upper cover body; 4. lower cover body; 5. temperature measuring and pressure regulating tank; 6. U-shaped tube; 7. conducting tube; 8. spiral heat pipe 1; 9. transmission rod 1; 10. transmission rod 2; 11. spiral heat pipe 2; 12. closed spiral cover; 13. heat transfer hole; 14. heat conduction cavity; 15. fixed plate; 16. scale line; 17. cone cover; 18. transmission rod; 19. drive motor q; 20. diffusion blade; 21. connecting tube; 22. feedback cavity; 23. upper fixed rod; 24. lower fixed rod; 25. support fork frame; 26. first propulsion rod; 27. second propulsion rod. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1: In view of the problem that the sludge carbonization process cannot proceed smoothly due to the lack of temperature control and material speed adjustment for dynamic characteristic changes, the following technical solution is proposed:

[0040] Reference Figure 1 - Figure 7 As shown, the medium-temperature carbonization treatment device based on low-temperature drying of sludge in this embodiment includes an inclined tank body 1 and a horizontal tank body 2 connected to each other, and the inclined tank body 1 and the horizontal tank body 2 constitute a carbonization furnace body, and a control panel is embedded outside the inclined tank body 1;

[0041] A transmission rod 1 9 and a transmission rod 2 10 are installed in the middle of the inclined tank body 1 and the horizontal tank body 2, respectively. The outer ends of the transmission rod 1 9 and the transmission rod 2 10 are rotatably connected to the first propulsion rod 26 and the second propulsion rod 27, respectively, and a driving structure is installed outside the first propulsion rod 26 and the second propulsion rod 27. The driving structure here includes a forward and reverse driving motor Q. A temperature release component is installed outside the transmission rod 1 9 and the transmission rod 2 10;

[0042] A temperature measuring mechanism is installed at the upper end of the inclined tank 1, which is used to predict the real-time temperature of the carbonization furnace body and prepare for feedback control of temperature regulation;

[0043] Reference Figure 2 , Figure 3 and Figure 4As shown, the temperature release assembly includes a spiral heat pipe 1 8 and a spiral heat pipe 2 11 respectively attached to the inner wall of the inclined tank body 1 and the horizontal tank body 2, a closed spiral cover 12 is installed on the inner side of the spiral of the spiral heat pipe 1 8, and a heat transfer hole 13 is opened on the closed spiral cover 12. The spiral heat pipe 1 8 and the spiral heat pipe 2 11 have the same spiral angle and the torsion angle of the spiral line is 30°;

[0044] Reference Figure 2 and Figure 7 As shown, an upper cover 3 is installed at the upper end of the tilting tank body 1, and a lower cover 4 is installed at one end of the horizontal tank body 2 away from the tilting tank body 1. The first push rod 26 and the second push rod 27 respectively penetrate the outer parts of the upper cover body 3 and the lower cover body 4 and are connected to electric push rods;

[0045] Reference Figure 7 As shown, a support fork frame 25 is installed at the upper end of the connection between the inclined tank body 1 and the horizontal tank body 2, and the lower end of the support fork frame 25 is rotatably connected to the transmission rod 1 9 and the transmission rod 2 10 respectively. The ends of the transmission rod 1 9 and the transmission rod 2 10 away from the support fork frame 25 are respectively installed with an upper fixed rod 23 and a lower fixed rod 24, and the upper fixed rod 23 and the lower fixed rod 24 are respectively connected to the spiral heat pipe 1 8 and the spiral heat pipe 2 11;

[0046] Reference Figure 5 and Figure 6 As shown, the temperature measuring mechanism includes a temperature measuring and pressure regulating tank 5 connected to the interior of the inclined tank body 1, and a connecting pipe 21 connected to the inclined tank body 1 is installed at the lower end of the temperature measuring and pressure regulating tank 5;

[0047] In addition, a feedforward control module is built into the control panel, and the feedforward control module includes a feed monitoring unit, a drying temperature control analysis unit, a stable operation control unit and a processor that are communicatively connected;

[0048] The feed monitoring unit is used to collect the feed rate value and the temperature release value during the sludge carbonization treatment, and send the feed rate value and the temperature release value to the drying temperature control analysis unit through the processor, wherein the feed rate value includes the sludge feed rate value in the carbonization furnace, and the temperature release value includes the temperature rise value in the carbonization furnace, which is specifically expressed as the liquid level height difference in the U-shaped tube 6;

[0049] The drying temperature control analysis unit performs risk analysis during sludge carbonization based on the received material rate value LW and temperature release value WP. The specific analysis stages are divided into the following points:

[0050] Phase 1: Constructing the calculation formula of the fast release factor SF Wherein a>b>0, and k>0, a and b are preset proportional coefficients, and k is a preset fault tolerance factor coefficient, to assign weights to the calculation process of the fast-release coefficient SF, and compare and analyze the fast-release coefficient SF with the fast-release coefficient threshold preset in the processor;

[0051] Stage 2: The drying temperature control analysis unit receives the material speed value LW and the temperature release value WP, and obtains the speed release coefficient SF after numerical calculation of the material speed value LW and the temperature release value WP;

[0052] When the speed release coefficient SF> the speed release coefficient threshold, it means that the temperature in the current carbonization furnace is too high and the feeding blockage phenomenon occurs. At this time, a speed-up and temperature-down signal is generated and sent to the stable operation control unit;

[0053] When the fast-release factor SF is within the fast-release factor threshold, no signal is generated;

[0054] When the rapid release coefficient SF is less than the rapid release coefficient threshold, it means that the temperature in the current carbonization furnace is too low and the feeding is too fast. At this time, a speed reduction and temperature increase signal is generated and sent to the stable operation control unit;

[0055] The stable operation control unit receives the action signal and controls the relevant components to move;

[0056] After receiving the speed-up and temperature-down signal, the stable operation control unit will send a control signal to the drive motor Q, the electric push rod and the combustible power supply device. The drive motor Q drives the spiral heat pipe 1 8 and the spiral heat pipe 2 11 to rotate through the transmission rod 1 9 and the transmission rod 2 10 respectively, so that the spiral heat pipe 1 8 and the spiral heat pipe 2 11 respectively in the inclined tank body 1 and the horizontal tank body 2 complete the speed-up rotation, that is, the sludge to be carbonized respectively in the inclined tank body 1 and the horizontal tank body 2 realizes the speed-up operation;

[0057] At the same time, the electric push rod drives the transmission rod 1 9 and the transmission rod 2 10 to complete the horizontal movement. At this time, the spiral heat pipe 1 8 and the spiral heat pipe 2 11 are respectively contracted in the axial position of the inclined tank body 1 and the horizontal tank body 2, that is, the spiral heat pipe 1 8 and the spiral heat pipe 2 11 are reduced in pitch, and finally the sludge in the carbonization furnace body is quickly discharged, avoiding the feeding blockage of the sludge to be carbonized in the carbonization furnace and realizing uniform carbonization;

[0058] The amount of combustible gas charged is simultaneously reduced, and the gas is ejected outward through the heat transfer holes 13 on the spiral heat pipe 1 8 and the spiral heat pipe 2 11, that is, the combustion temperature in the carbonization furnace is reduced. The combined effect of the two can increase the sludge feeding speed and reduce the combustion temperature in the carbonization furnace.

[0059] After receiving the speed reduction and temperature increase signal, the stable operation control unit sends a control signal to the drive motor Q and the combustible gas power supply device. The drive motor Q drives the spiral heat pipe 1 8 and the spiral heat pipe 2 11 to rotate through the transmission rod 1 9 and the transmission rod 2 10, respectively, so that the spiral heat pipe 1 8 and the spiral heat pipe 2 11 respectively in the inclined tank body 1 and the horizontal tank body 2 complete the speed reduction rotation, that is, the sludge to be carbonized respectively in the inclined tank body 1 and the horizontal tank body 2 runs at a reduced speed;

[0060] At the same time, the electric push rod drives the transmission rod 1 9 and the transmission rod 2 10 to complete the horizontal movement. At this time, the spiral heat pipe 1 8 and the spiral heat pipe 2 11 expand in the axial position of the inclined tank body 1 and the horizontal tank body 2 respectively, that is, the spiral heat pipe 1 8 and the spiral heat pipe 2 11 expand in pitch, and finally the sludge in the carbonization furnace body is discharged at a reduced speed, so as to avoid the phenomenon of too fast feeding of the sludge to be carbonized in the carbonization furnace and realize uniform carbonization;

[0061] The charge amount of combustible gas is increased synchronously and ejected outward through the heat transfer holes 13 on the spiral heat pipe 1 8 and the spiral heat pipe 2 11, that is, the combustion temperature in the carbonization furnace is increased. The combined effect of the two can reduce the sludge feed rate and increase the combustion temperature in the carbonization furnace.

[0062] Basic principle: The present invention is basically the same as the sludge carbonization principle in the conventional carbonization furnace, and the difference lies in that: through the setting of the variable speed temperature release component and the temperature control adjustment, the current carbonization rate can be intelligently determined in real time according to the feeding speed and carbonization temperature in the carbonization furnace during the sludge carbonization treatment process, and the parameter determination of the material speed value and the temperature release value is combined to realize the control signal output by the speed release coefficient control, and finally the speed adjustment, pitch adjustment and carbonization temperature adjustment of the temperature release component are completed, so as to achieve the purpose of controllable carbonization rate;

[0063] It can also carry out rotary carbonization operations under the injection of built-in combustible gas power source, avoiding the phenomenon of incomplete sludge carbonization caused by failure of rotary seal and loss of jacket heat supply due to long-term use of contact between high-temperature flue gas and sludge, and realizing temperature prediction according to dynamic characteristic changes in the sludge carbonization process and real-time temperature control and material speed adjustment, which is conducive to the smooth progress of sludge carbonization.

[0064] Embodiment 2: This embodiment further optimizes the specific structure of the temperature measuring mechanism in Embodiment 1:

[0065] The temperature measuring mechanism includes a temperature measuring and pressure regulating tank 5 connected to the inside of the inclined tank body 1, a U-shaped tube 6 is installed on the top of the temperature measuring and pressure regulating tank 5 through a conducting tube 7, and the U-shaped tube 6 is filled with a filling liquid that is immiscible with high-temperature flue gas, and the temperature measuring and pressure regulating tank 5, the conducting tube 7 and the U-shaped tube 6 together form an "S"-shaped communicating cavity; a fixing plate 15 connected to the inclined tank body 1 is installed at the bottom of the U-shaped tube 6, a cone cover 17 is installed at the upper end of the U-shaped tube 6 away from the conducting tube 7, and a scale line 16 is opened on the outer side of the upper end of the U-shaped tube 6 away from the conducting tube 7;

[0066] It should be noted that: refer to Figure 5 and Figure 6As shown, during the sludge carbonization process, the high-temperature flue gas generated in the carbonization furnace is injected into the U-shaped tube 6 through the temperature measuring and pressure regulating tank 5 and the conducting tube 7. At this time, the filling liquid in the U-shaped tube 6 is affected by the gas pressure in the furnace body, resulting in a liquid level difference, which is compared one by one with the corresponding constant pressure change standard, thereby obtaining the temperature change difference in the current carbonization furnace body, which is convenient for the feedforward control module to measure the parameters in the carbonization furnace body and make corresponding action guidance;

[0067] In addition, refer to Figure 5 As shown, the impact release of high-temperature and high-pressure gas in the furnace body is also achieved through the gas pressure dispersion structure, specifically including a rotating rod 18 extending into the connecting pipe 21 installed at the middle of the upper end of the temperature measuring and pressure regulating tank 5, and a diffusion blade 20 is connected to the outer cover of the rotating rod 18 located in the temperature measuring and pressure regulating tank 5. A driving motor q19 is installed above the middle of the conducting pipe 7 corresponding to the temperature measuring and pressure regulating tank 5, and the output end of the motor 19 passes through the conducting pipe 7 and is connected to the rotating rod 18, and the lower end of the diffusion blade 20 is in contact with the inner wall of the temperature measuring and pressure regulating tank 5;

[0068] The driving motor q drives the diffusion blade 20 to rotate through the rotating rod 18, so that the high-temperature and high-pressure gas in the carbonization furnace body can be slowly released through the gas pressure dispersion structure in the temperature measuring and pressure regulating tank 5, reducing the impact of the high-pressure gas directly on the filling liquid in the U-shaped tube 6, and thus effectively ensuring that the temperature measuring mechanism can make accurate indications of the temperature changes in the carbonization furnace body.

[0069] Embodiment 3: This embodiment, in combination with Embodiment 1 and Embodiment 2, constitutes a medium-temperature carbonization treatment method based on low-temperature drying of sludge; and comprises the following steps:

[0070] S1: First, the sludge is injected into the inclined tank 1 for carbonization treatment, and the high-temperature gas is released through the spiral heat pipe 1 8 and the spiral heat pipe 2 11;

[0071] S2: The sludge enters the inclined tank 1 and is fed evenly by the continuously rotating spiral heat pipe 1 8 and spiral heat pipe 2 11. At the same time, the heat transfer holes 13 on the spiral heat pipe 1 8 and spiral heat pipe 2 11 release the high-temperature gas evenly, thus achieving carbonization treatment.

[0072] S3: During the sludge carbonization process in S2, the material speed value and the temperature release value are obtained according to the feedforward control module, and the material speed value and the temperature release value are substituted into the calculation formula of the speed release coefficient to obtain the speed release coefficient, and the speed release coefficient is compared with the speed release coefficient threshold to output a speed increase and temperature reduction signal and a speed decrease and temperature increase signal, and the speed adjustment, pitch adjustment and carbonization temperature adjustment of the temperature release component are performed synchronously;

[0073] S4: In S3, when the speed-up and temperature-down signal is output, a control signal is sent to the drive motor Q, the electric push rod and the combustible power supply device. The drive motor Q drives the spiral heat pipe 1 8 and the spiral heat pipe 2 11 to rotate through the transmission rod 1 9 and the transmission rod 2 10 respectively, so that the spiral heat pipe 1 8 and the spiral heat pipe 2 11 respectively in the inclined tank body 1 and the horizontal tank body 2 complete the speed-up rotation, that is, the sludge to be carbonized in the inclined tank body 1 and the horizontal tank body 2 respectively realizes the speed-up operation. At the same time, the electric push rod drives the transmission rod 1 9 and the transmission rod 2 10 to complete the horizontal movement. At this time, the spiral heat pipe 1 8 and the spiral heat pipe 2 11 shrink in the axial position of the inclined tank body 1 and the horizontal tank body 2 respectively, that is, the spiral heat pipe 1 8 and the spiral heat pipe 2 11 reduce the pitch, and finally the sludge in the carbonization furnace body is quickly discharged, the feeding blockage of the sludge to be carbonized in the carbonization furnace is avoided, and uniform carbonization is achieved;

[0074] The amount of combustible gas charged is simultaneously reduced, and the gas is ejected outward through the heat transfer holes 13 on the spiral heat pipe 1 8 and the spiral heat pipe 2 11, that is, the combustion temperature in the carbonization furnace is reduced. The combined effect of the two can increase the sludge feeding speed and reduce the combustion temperature in the carbonization furnace.

[0075] S5: In S3, when the speed reduction and temperature increase signal is output, a control signal is sent to the drive motor Q and the combustible power supply device, and the drive motor Q drives the spiral heat pipe 1 8 and the spiral heat pipe 2 11 to rotate through the transmission rod 1 9 and the transmission rod 2 10 respectively, so that the spiral heat pipe 1 8 and the spiral heat pipe 2 11 respectively in the inclined tank body 1 and the horizontal tank body 2 complete the speed reduction rotation, that is, the sludge to be carbonized in the inclined tank body 1 and the horizontal tank body 2 respectively slows down, and at the same time, the electric push rod drives the transmission rod 1 9 and the transmission rod 2 10 to complete the horizontal movement. At this time, the spiral heat pipe 1 8 and the spiral heat pipe 2 11 expand in the axial position of the inclined tank body 1 and the horizontal tank body 2 respectively, that is, the spiral heat pipe 1 8 and the spiral heat pipe 2 11 expand their pitch, and finally the sludge in the carbonization furnace body is discharged at a reduced speed, so as to avoid the phenomenon of too fast feeding of the sludge to be carbonized in the carbonization furnace and realize uniform carbonization;

[0076] The amount of combustible gas charged is increased synchronously, and is ejected outward through the heat transfer holes 13 on the spiral heat pipe 1 8 and the spiral heat pipe 2 11, that is, the combustion temperature in the carbonization furnace is increased. The combined effect of the two can reduce the sludge feeding rate and increase the combustion temperature in the carbonization furnace.

[0077] S6: After the sludge is carbonized, it is discharged through the opening of the lower cover body 4.

[0078] In summary, the present invention is a combination of embodiments 1, 2 and 3, and is different from the conventional sludge carbonization in the carbonization furnace in that: on the one hand, through the setting of the variable speed temperature release component and the temperature control adjustment, the current carbonization rate can be intelligently determined in real time according to the feeding speed and carbonization temperature in the carbonization furnace during the sludge carbonization process, and the parameter determination of the material speed value and the temperature release value is combined to realize the control signal output by the speed release coefficient control, and finally the speed adjustment, pitch adjustment and carbonization temperature adjustment of the temperature release component are completed, so as to achieve the purpose of controllable carbonization rate;

[0079] At the same time, rotary carbonization operation can be carried out under the injection of built-in combustible gas source, so as to avoid the failure of rotary seal and incomplete carbonization of sludge caused by the loss of heat supply of jacket due to the contact between high-temperature flue gas and sludge after long-term use, and realize the temperature prediction of sludge carbonization process according to the dynamic characteristics change and real-time temperature control and material speed adjustment, which is conducive to the smooth progress of sludge carbonization; on the other hand, through the continuous rotation of the diffusion blades, the high-temperature and high-pressure gas in the carbonization furnace body can be slowly released through the air pressure dispersion structure in the temperature measuring and pressure regulating tank, reducing the impact of high-pressure gas directly on the filling liquid in the U-tube, thereby effectively ensuring that the temperature measuring mechanism can make accurate indications of the temperature changes in the carbonization furnace body.

[0080] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only specific implementation methods.

Claims

1. A medium-temperature carbonization treatment device based on low-temperature drying of sludge, comprising an inclined tank body (1) and a horizontal tank body (2) connected to each other, and a control panel is embedded outside the inclined tank body (1), characterized in that: A transmission rod 1 (9) and a transmission rod 2 (10) are respectively installed in the middle of the inclined tank body (1) and the horizontal tank body (2), and the outer ends of the transmission rod 1 (9) and the transmission rod 2 (10) are rotatably connected to the first propulsion rod (26) and the second propulsion rod (27), respectively, and the transmission rod 1 (9) and the transmission rod 2 (10) are both installed with a temperature release component outside; The temperature release assembly comprises a spiral heat pipe 1 (8) and a spiral heat pipe 2 (11) respectively attached to the inner wall of the inclined tank body (1) and the horizontal tank body (2); a closed spiral cover (12) is installed on the inner side of the spiral of the spiral heat pipe 1 (8); a heat transfer hole (13) is opened on the closed spiral cover (12); the spiral heat pipe 1 (8) and the spiral heat pipe 2 (11) have the same spiral angle and the twist angle of the spiral line is 30°; A temperature measuring mechanism is installed at the upper end of the inclined tank body (1), and the temperature measuring mechanism comprises a temperature measuring and pressure regulating tank (5) connected to the interior of the inclined tank body (1). A U-shaped tube (6) is installed at the top of the temperature measuring and pressure regulating tank (5) via a conducting tube (7). The temperature measuring and pressure regulating tank (5), the conducting tube (7) and the U-shaped tube (6) together form an "S"-shaped communicating cavity.

2. The medium-temperature carbonization treatment device based on low-temperature drying of sludge according to claim 1 is characterized in that: A connecting pipe (21) connected to the inclined tank body (1) is installed at the lower end of the temperature measuring and pressure regulating tank (5), and a rotating rod (18) extending into the connecting pipe (21) is installed at the middle of the upper end of the temperature measuring and pressure regulating tank (5). A diffusion blade (20) is connected to the outer shell of the rotating rod (18) located in the temperature measuring and pressure regulating tank (5).

3. The medium-temperature carbonization treatment device based on low-temperature drying of sludge according to claim 2 is characterized in that: A driving motor q (19) is installed above the middle of the temperature measuring and pressure regulating tank (5) corresponding to the conducting tube (7), the output end of the motor (19) passes through the conducting tube (7) and is connected to the rotating rod (18), and the lower end of the diffusion blade (20) is in contact with the inner wall of the temperature measuring and pressure regulating tank (5).

4. The medium-temperature carbonization treatment device based on low-temperature drying of sludge according to claim 1 is characterized in that: An upper cover body (3) is mounted on the upper end of the tilting tank body (1), a lower cover body (4) is mounted on one end of the transverse tank body (2) away from the tilting tank body (1), and the first propulsion rod (26) and the second propulsion rod (27) respectively penetrate the outer portions of the upper cover body (3) and the lower cover body (4) and are connected to electric push rods.

5. The medium-temperature carbonization treatment device based on low-temperature drying of sludge according to claim 1 is characterized in that: A support fork frame (25) is commonly installed at the upper end of the connection between the inclined tank body (1) and the horizontal tank body (2), and the lower end of the support fork frame (25) is rotatably connected to the first transmission rod (9) and the second transmission rod (10) respectively.

6. The medium-temperature carbonization treatment device based on low-temperature drying of sludge according to claim 5 is characterized in that: An upper fixing rod (23) and a lower fixing rod (24) are respectively mounted on the ends of the transmission rod 1 (9) and the transmission rod 2 (10) away from the support fork frame (25); the upper fixing rod (23) and the lower fixing rod (24) are respectively connected to the spiral heat pipe 1 (8) and the spiral heat pipe 2 (11).

7. The medium-temperature carbonization treatment device based on low-temperature drying of sludge according to claim 1 is characterized in that: A fixing plate (15) connected to the inclined tank body (1) is installed at the bottom of the U-shaped tube (6), a cone cover (17) is installed at the upper end of the U-shaped tube (6) away from the conducting tube (7), and a scale line (16) is provided on the outer side of the upper end of the U-shaped tube (6) away from the conducting tube (7).

8. The medium-temperature carbonization treatment device based on low-temperature drying of sludge according to claim 1 is characterized in that: The control panel is built with a feedforward control module, which includes a feed monitoring unit, a drying temperature control analysis unit, a stable operation control unit and a processor that are communicatively connected; The feed monitoring unit is used to collect the feed rate value and the temperature release value during the sludge carbonization treatment, and send the feed rate value and the temperature release value to the drying temperature control analysis unit through the processor. The drying temperature control analysis unit performs risk analysis during the sludge carbonization according to the received feed rate value and the temperature release value, and generates an action signal to send to the stable operation control unit; The stable operation control unit receives the action signal and controls the relevant components to move.

9. A medium-temperature carbonization treatment method based on low-temperature drying of sludge, used in a medium-temperature carbonization treatment device based on low-temperature drying of sludge as claimed in any one of claims 1 to 8, characterized in that: The steps include: S1: First, the sludge is injected into the inclined tank (1) for carbonization treatment, and the high-temperature gas is released through the spiral heat pipe 1 (8) and the spiral heat pipe 2 (11); S2: The sludge enters the inclined tank (1) and is fed evenly under the action of the continuously rotating spiral heat pipe 1 (8) and spiral heat pipe 2 (11). At the same time, the heat transfer holes (13) on the spiral heat pipe 1 (8) and spiral heat pipe 2 (11) release the high-temperature gas evenly, thereby achieving carbonization treatment; S3: During the sludge carbonization treatment process in S2, parameters are acquired according to the feedforward control module, and the current sludge carbonization risk value is obtained by numerical calculation of the parameters, and finally the operation rate and temperature during the sludge carbonization are controlled through comparative analysis; S4: After the sludge is carbonized, it is discharged through the opening of the lower cover body (4).

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