A power plant coupled sludge pyrolysis treatment method

Abstract

The invention relates to the technical field of sludge pyrolysis treatment, and specifically to a power plant coupled sludge pyrolysis treatment method, comprising: step 1: crushing and filtering the sludge through a crushing and filtering device, and then dropping the filtered sludge into a feeding device; step 2: transporting the sludge to a pyrolysis reactor through the feeding device, and performing a pyrolysis reaction at a certain temperature and pressure; step 3: collecting gas in the pyrolysis reaction process into a gas collecting device, collecting liquid products into a liquid collector, and collecting solid products into a collecting device. The invention performs crushing and filtering pretreatment on the sludge to prevent the sludge from being large in size and containing more impurities, which may easily affect the pyrolysis efficiency, and may easily block the sludge inlet of the sludge pyrolysis device.

Description

Technical Field

[0001] The invention relates to the technical field of sludge pyrolysis treatment, and in particular to a power plant-coupled sludge pyrolysis treatment method. Background Art

[0002] Oil sludge refers to solid waste mixed with waste oil, waste lubricating oil and other oily waste materials. The treatment of oil sludge is an important task of environmental protection and resource recovery. By coupling the pyrolysis treatment method of power plant oil sludge, effective treatment and resource recovery of oil sludge can be achieved, pollution to the environment can be reduced, and certain energy utilization benefits can be obtained at the same time. The pyrolysis method utilizes the poor thermal stability of organic matter in oily sludge and its easy thermal decomposition under anaerobic or anoxic conditions. The oily sludge is isolated from air and subjected to an enhanced heat treatment process to precipitate the oil and organic matter therein, and the oily sludge is separated into pyrolysis slag, pyrolysis liquid and pyrolysis gas to achieve the purpose of resource utilization. Pyrolysis technology is a harmless treatment technology that effectively solves the pollution problem of oily sludge, and improves oil and gas recovery and residue utilization.

[0003] Existing sludge pyrolysis treatment methods, such as CN108640457A, a sludge pyrolysis harmless treatment method, have the following problems: before the sludge enters the sludge pyrolysis device, there is a lack of pretreatment of the sludge, such as crushing and filtering pretreatment, which can easily affect the pyrolysis efficiency and easily clog the sludge inlet of the sludge pyrolysis device. Summary of the invention

[0004] The present invention provides a power plant coupled oil sludge pyrolysis treatment method to solve the technical problems raised by the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses a power plant coupled sludge pyrolysis treatment method, comprising:

[0006] Step 1: crushing and filtering the sludge through the crushing and filtering device, and then dropping the filtered sludge into the feeding device;

[0007] Step 2: The sludge is transported to the pyrolysis reactor through a feeding device and pyrolysis reaction is carried out at a certain temperature and pressure;

[0008] Step 3: Collect the gas in the pyrolysis reaction process into a gas collecting device, collect the liquid product into a liquid collector, and collect the solid product into a collecting device.

[0009] Preferably, the feeding device includes a feeding box and a screw conveying shaft, the feeding box is fixedly connected to the bottom plate through a fixed bracket, and the screw conveying shaft is rotatably connected in the feeding box, and the crushing and filtering device includes:

[0010] A box body is fixed on the upper end of the feeding device, a feeding port is arranged on the upper end of the box body, and a discharge port is arranged on the lower end of the box body, and the discharge port is connected to the feeding device;

[0011] Crushing rollers, two crushing rollers arranged equally up and down are rotatably connected to the inner wall of the box, the left side of the crushing roller passes through the box and is connected to the first rotating shaft, and the first rotating shafts adjacent to each other are driven by a first belt transmission device;

[0012] A second rotating shaft, the second rotating shaft is fixedly connected to the left end of the spiral conveying shaft, the second rotating shaft is driven by a first motor, the first motor is fixed on the bracket, and the second rotating shaft and a first rotating shaft are driven by a second belt transmission device; the bracket is fixedly connected to the bottom plate;

[0013] The first filter plate is located inside the box and below all the crushing rollers.

[0014] Preferably, the crushing and filtering device further comprises:

[0015] A cylindrical rotating block is fixedly sleeved on the left part of the second rotating shaft, and a curved sliding groove is arranged on the cylindrical rotating block;

[0016] A moving block, the left and right sides of the first filter plate are respectively fixedly connected to the moving blocks, the moving block slides through the left and right walls of the box body, the moving block at the right end slides in the sleeve, the left side of the sleeve is open, the sleeve is fixedly passed through the right wall of the box body and extends outward, and a first spring is provided between the right side of the moving block and the right side of the inner wall of the sleeve;

[0017] The L-shaped rod is composed of a vertical section and an integrally arranged horizontal section at the upper right end of the vertical section. The right side of the horizontal section contacts or is fixed to the left wall of the moving block on the left side. A sliding section is arranged at the lower end of the vertical section of the L-shaped rod, and the sliding section is slidably connected in the sliding groove.

[0018] Preferably, the gas collecting device is fixed on the pyrolysis reactor.

[0019] Preferably, the gas collecting device comprises:

[0020] A shell is fixed on the pyrolysis reactor, an air outlet is arranged at the upper end of the shell, a first air inlet is arranged on the left wall of the shell, the first air inlet is connected with the air pipe and the air outlet of the pyrolysis reactor, a horizontal plate is fixedly connected between the left and right inner walls at the lower end of the shell, and a third rotating shaft is rotatably connected to the middle of the horizontal plate;

[0021] The third rotating shaft has a lower end rotatably connected to the lower inner wall of the shell, the third rotating shaft is driven by a driving device, a threaded section is arranged at the lower part of the third rotating shaft, the threaded section is threadedly connected to the lifting block, the fixed block is fixedly connected to the upper end of the horizontal plate, the lifting block is located above the fixed block, a gas cavity is arranged at the upper part of the third rotating shaft, the gas cavity is connected to the compressed gas source through a connecting pipe, the outer side of the hollow part of the third rotating shaft is connected to the blowing pipe, a plurality of air holes are arranged at the lower side of the blowing pipe, and the blowing pipe is connected to the gas cavity;

[0022] Two groups of left-right symmetrical second filter plates, the lower ends of the second filter plates are hinged to the outer sides of the upper part of the fixed block, the front and rear sides of the second filter plates are sealed and slidably connected to the front and rear inner walls of the shell, and the side of the second filter plate away from the fixed block is connected to the corresponding inner wall of the shell through an elastic sealing cloth;

[0023] The two groups of support rods 1 correspond to the two groups of second filter plates one by one respectively. The upper end of the support rod 1 is hinged to the lifting block, and the lower end of the support rod is connected to the hinge seat, which is slidably connected to the upper side of the second filter plate.

[0024] Preferably, the driving device comprises: a first gear, the upper portion of the third rotating shaft is fixedly connected to the first gear, the first gear is meshed with the second gear for transmission, the second gear is driven by a second motor, and the second motor is fixed to the upper end of the shell.

[0025] Preferably, a dust suction pipe is installed on the right wall of the upper end of the shell, and the dust suction pipe is connected to the dust suction device.

[0026] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 is a flow chart of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the present invention;

[0030] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle part;

[0031] Figure 4 Schematic diagram of the gas collection device of the present invention.

[0032] In the figure: 1. Crushing and filtering device; 11. Feeding port; 12. Box; 13. Crushing roller; 14. First rotating shaft; 15. First pulley; 17. Second pulley; 19. First filter plate; 110. Third pulley; 111. First motor; 112. Bracket; 113. Second rotating shaft; 114. Moving block; 115. First spring; 116. Sleeve; 117. L-shaped rod; 118. Cylindrical rotating block; 119. Sliding section; 120. Sliding groove; 121. Discharging port; 2. Feeding device; 21. Feeding box ; 22. Screw conveyor shaft; 23. Fixed bracket; 3. Pyrolysis reactor; 4. Air pipe; 5. Liquid collector; 6. Bottom plate; 7. Collecting device; 8. Gas collecting device; 81. Shell; 82. Air outlet; 83. First air inlet; 84. Elastic sealing cloth; 85. Third rotating shaft; 86. Cross plate; 87. Fixed block; 88. Second filter plate; 89. Support rod 1; 810. Lifting block; 811. Air blowing pipe; 812. Second motor; 813. First gear; 814. Second gear; 815. Dust suction pipe. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides the following embodiments

[0036] Example 1

[0037] The embodiment of the present invention provides a power plant coupled sludge pyrolysis treatment method, such as Figure 1 As shown, including:

[0038] Step 1: crushing and filtering the oil sludge through the crushing and filtering device 1, and then dropping the filtered oil sludge into the feeding device 2;

[0039] Step 2: The sludge is transported to the pyrolysis reactor 3 through the feeding device 2, and pyrolysis reaction is carried out at a certain temperature and pressure;

[0040] Step 3: Collect the gas in the pyrolysis reaction process into the gas collecting device 8, collect the liquid product into the liquid collector 5, and collect the solid product into the collecting device 7.

[0041] The beneficial effects of the above technical solution are as follows: in the present invention, the sludge is placed in the crushing and filtering device 1, the sludge after crushing and filtering falls into the feeding device 2, and then the sludge is transported to the pyrolysis reactor 3, the gas in the pyrolysis reaction process is collected in the gas collecting device 8, the liquid product is collected in the liquid collector 5, and the solid product is collected in the collecting device 7; the present invention pre-treats the sludge by crushing and filtering, thereby avoiding the sludge being large in size and containing more impurities, which easily affects the pyrolysis efficiency, and easily blocks the sludge inlet of the sludge pyrolysis device.

[0042] The present invention effectively solves the following problems raised by the background technology: the existing sludge pyrolysis treatment method, such as CN108640457A, a sludge pyrolysis harmless treatment method, has the following problems: before the sludge enters the sludge pyrolysis device, there is a lack of pretreatment of the sludge, such as crushing and filtering pretreatment, which easily affects the pyrolysis efficiency and easily blocks the sludge inlet of the sludge pyrolysis device.

[0043] Example 2

[0044] On the basis of Example 1, Figure 2 , Figure 3 As shown, the feeding device 2 includes a feeding box 21 and a screw conveying shaft 22. The feeding box 21 is fixedly connected to the bottom plate 6 through a fixing bracket 23, and the screw conveying shaft 22 is rotatably connected in the feeding box 21. The crushing and filtering device 1 includes:

[0045] The box body 12 is fixed to the upper end of the feeding device 2. The upper end of the box body 12 is provided with a feeding port 11, and the lower end of the box body 12 is provided with a discharge port 121, and the discharge port 121 is connected to the feeding device 2;

[0046] Crushing rollers 13, two crushing rollers 13 arranged equally up and down are rotatably connected to the inner wall of the box body 12, the left side of the crushing roller 13 passes through the box body 12 and is connected to the first rotating shaft 14, and the first rotating shafts 14 adjacent to each other up and down are driven by a first belt transmission device;

[0047] A second rotating shaft 113, wherein the second rotating shaft 113 is fixedly connected to the left end of the spiral conveying shaft 22, and the second rotating shaft 113 is driven by a first motor 111, wherein the first motor 111 is fixed to a bracket 112, and the second rotating shaft 113 and a first rotating shaft 14 are driven by a second belt transmission device; the bracket 112 is fixedly connected to the bottom plate 6;

[0048] The first filter plate 19 is located inside the box 12 and below all the crushing rollers 13 .

[0049] Specifically, the first pulley 15 is connected to the left side of the first rotating shaft 14 on the upper side, and the second pulley 17 is connected to the left side of the first rotating shaft 14 on the lower side. The first pulley 15 is connected to the second pulley 17 through a first belt transmission, and the second pulley 17 is connected to the third pulley 110 through a second belt transmission. The third pulley 110 is fixed on the second rotating shaft 113.

[0050] Preferably, the crushing and filtering device 1 further comprises:

[0051] A cylindrical rotating block 118 is fixedly sleeved on the left side of the second rotating shaft 113, and a curved sliding groove 120 is provided on the cylindrical rotating block 118;

[0052] A moving block 114, the left and right sides of the first filter plate 19 are respectively fixedly connected to the moving blocks 114, the moving block 114 slides through the left and right walls of the box body 12, the moving block 114 at the right end slides in the sleeve 116, the left side of the sleeve 116 is open, the sleeve 116 is fixedly penetrated through the right wall of the box body 12 and extends outward, and a first spring 115 is provided between the right side of the moving block 114 and the right side of the inner wall of the sleeve 116;

[0053] The L-shaped rod 117 is composed of a vertical section and an integrally arranged horizontal section at the upper right end of the vertical section. The right side of the horizontal section contacts or is fixed to the left wall of the moving block 114 on the left side. A sliding section 119 is arranged at the lower end of the vertical section of the L-shaped rod 117, and the sliding section 119 is slidably connected in the sliding groove 120.

[0054] The working principle and beneficial effects of the above technical solution are:

[0055] 1. In the present invention, the oil sludge is put into the box body 12 from the feed port 11, and the first motor 111 is started, and the second rotating shaft 113 starts to rotate, and the first rotating shaft 14 adjacent to each other above and below is driven to rotate through the second belt transmission device and the first belt device, and then the two crushing rollers 13 arranged equally above and below start to crush the oil sludge, achieving double crushing;

[0056] 2. The crushed sludge falls onto the first filter plate 19. Since the cylindrical rotating block 118 is fixedly sleeved on the left part of the second rotating shaft 113, a curved sliding groove 120 is provided on the cylindrical rotating block 118. A sliding section 119 is provided at the lower end of the vertical section of the L-shaped rod 117. The sliding section 119 can be slidably connected in the sliding groove 120. The cylindrical rotating block 118 rotates with the second rotating shaft 113, so that the left and right positions of the sliding groove 120 in the circumferential direction are constantly changing. Therefore, the L-shaped rod 117 moves left and right, and the L-shaped rod 117 drives the moving block 114 and the first filter plate 19 to move left and right. At the same time, the first spring 115 can play a vibration effect to speed up the filtering of the first filter plate 19.

[0057] 3. The first motor 111 can drive the screw conveying shaft 22 to rotate and convey, the two crushing rollers 13 can crush synchronously, and the first filter plate can move left and right to speed up the filtration, which is easy to control.

[0058] Example 3

[0059] On the basis of Example 2, Figure 2 , Figure 4 As shown, the gas collecting device 8 is fixed on the pyrolysis reactor 3 .

[0060] Preferably, the gas collecting device 8 comprises:

[0061] The shell 81 is fixed on the pyrolysis reactor 3. The upper end of the shell 81 is provided with an air outlet 82. The left wall of the shell 81 is provided with a first air inlet 83. The first air inlet 83 is connected with the air pipe 4 and the air outlet of the pyrolysis reactor 3. The left and right inner walls at the lower end of the shell 81 are fixedly connected with a transverse plate 86. The middle of the transverse plate 86 is rotatably connected with a third rotating shaft 85.

[0062] The third rotating shaft 85, the lower end of which is rotatably connected to the lower inner wall of the shell 81, is driven by a driving device, a threaded section is arranged at the lower part of the third rotating shaft 85, the threaded section is threadedly connected to the lifting block 810, a fixed block 87 is fixedly connected to the upper end of the horizontal plate 86, the lifting block 810 is located above the fixed block 87, a gas cavity is arranged at the upper part of the third rotating shaft 85, the gas cavity is connected to the compressed gas source through a connecting pipe, the outer side of the hollow part of the third rotating shaft 85 is connected to the blowing pipe 811, a plurality of air holes are arranged at the lower side of the blowing pipe 811, and the blowing pipe 811 is connected to the gas cavity;

[0063] Two groups of symmetrical second filter plates 88, the lower ends of the second filter plates 88 are hinged to the outer sides of the upper part of the fixing block 87, the front and rear sides of the second filter plates 88 are sealed and slidably connected to the front and rear inner walls of the housing 81, and the side of the second filter plate 88 away from the fixing block 87 is connected to the corresponding inner wall of the housing 81 through the elastic sealing cloth 84;

[0064] The two groups of support rods 89 correspond to the two groups of second filter plates 88 one by one, respectively. The upper ends of the support rods 89 are hinged to the lifting blocks 810, and the lower ends of the support rods 89 are connected to the hinge seats, which are slidably connected to the upper sides of the second filter plates 88.

[0065] Preferably, the driving device includes: a first gear 813, the upper part of the third rotating shaft 85 is fixedly connected to the first gear 813, the first gear 813 is meshed with the second gear 814 for transmission, the second gear 814 is driven by a second motor 812, and the second motor 812 is fixed to the upper end of the shell 81.

[0066] Preferably, a dust suction pipe 815 is installed on the right wall of the upper end of the shell 81, and the dust suction pipe 815 is connected to a dust suction device.

[0067] In the present invention, a water pipe may be provided on the upper portion of the third rotating shaft 85 to heat the fluid in the water pipe by means of high-temperature gas.

[0068] The working principle and beneficial effects of the above technical solution are:

[0069] 1. In the present invention, the gas reacted in the pyrolysis reactor 3 is discharged through the gas outlet of the pyrolysis reactor 3. Since the first gas inlet 83 is connected with the gas pipe 4 and the gas outlet of the pyrolysis reactor 3, the gas reacted in the pyrolysis reactor 3 enters the housing 81 from the first gas inlet 83, and the large particle impurities in the gas can be filtered through the inclined second filter plate 88, and the filtered gas is discharged through the gas outlet 82;

[0070] 2. When the second filter plate 88 is blocked, the second motor 812 is started, and the second motor 812 drives the second gear 814. Since the first gear 813 is meshed with the second gear 814 for transmission, the first gear 813 starts to rotate. Since the upper part of the third rotating shaft 85 is fixedly connected to the first gear 813, the third rotating shaft 85 starts to rotate. Since a gas cavity is arranged on the upper part of the third rotating shaft 85, the gas cavity is connected to a compressed gas source through a connecting pipe, and the outer side of the hollow part of the third rotating shaft 85 is connected to an air blowing pipe 811, and a plurality of air holes are arranged on the lower side of the air blowing pipe 811. The air blowing pipe 811 is connected to the gas cavity, and the second filter plate 88 can be dusted from the upper part of the second filter plate 88 by compressed air; and the air blowing pipe 811 rotates with the third rotating shaft 85, which can ensure the dust removal efficiency and effect;

[0071] And because a threaded section is provided at the lower part of the third rotating shaft 85, and the threaded section is threadedly connected to the lifting block 810, the lifting block 810 will move up and down as the third rotating shaft 85 rotates. The lifting block 810 drives the second filter plate 88 to continuously change its angle through the support rod 89 to achieve shaking, so as to speed up dust removal, and the tilted second filter plate 88 facilitates dust discharge.

[0072] The present invention can select any one of the above-mentioned shaking dust removal and compressed gas dust removal or a combination of the two according to the dust removal requirements.

[0073] A dust suction pipe 815 is installed on the right wall of the upper end of the shell 81. The dust suction pipe 815 is connected to a dust suction device, which can eventually remove dust and ensure the purity of the gas.

[0074] Embodiment 4, based on any one of Embodiments 1-3, further comprises:

[0075] An air pressure sensor is arranged at the air outlet of the pyrolysis reactor 3 to detect the air pressure there;

[0076] A flow sensor is arranged at the gas outlet of the pyrolysis reactor 3 to detect the gas flow at the outlet;

[0077] The sampling and collection module is used to sample and obtain the average particle size and density of the oil sludge after crushing in the crushing device;

[0078] The pyrolysis reactor 3 monitoring device is used to obtain the actual operating parameters of the pyrolysis reactor 3. The actual operating parameters of the pyrolysis reactor 3 include: the operating temperature of the pyrolysis reactor 3, the internal working gas pressure of the pyrolysis reactor 3, and the output power of the pyrolysis reactor 3;

[0079] A timer, used to time the working time of the pyrolysis reactor 3, and the timer is reset after each pyrolysis discharge of solids and liquids;

[0080] A first weight collection device, used to obtain the mass of the solid discharged from the pyrolysis reactor 3;

[0081] A second weight collection device, used to obtain the mass of the liquid discharged from the pyrolysis reactor 3;

[0082] A material level detection device, used to obtain the material level in the pyrolysis reactor 3;

[0083] A control device, wherein the control device is electrically connected to the air pressure sensor, the flow sensor, the sampling and acquisition module, the pyrolysis reactor 3 monitoring device, the timer, the first weight monitoring device, the second weight acquisition device, the material level detection device, the first alarm, and the second alarm respectively. The control device controls the first alarm and the second alarm based on the air pressure sensor, the flow sensor, the sampling and acquisition module, the pyrolysis reactor 3 monitoring device, the timer, the first weight monitoring device, the second weight acquisition device, and the material level detection device, and includes:

[0084] Before batch pyrolysis, pre-pyrolysis is performed. Before pre-pyrolysis, the sampling and collection module is controlled to work, and then the crushed sludge is added to the pyrolysis reactor 3 until the material level detection value is the first material level. Then, the pyrolysis reactor 3 is controlled to work with the rated working parameters, and the reaction state coefficient is periodically calculated based on the pressure sensor and the flow sensor;

[0085] ;

[0086] is the reaction state coefficient in the i-th cycle, is the average detection value of the flow sensor in the i-th cycle, is the average detection value of the flow sensor in the i-1th cycle; is the theoretical flow rate at the outlet of the pyrolysis reactor 3 during the reaction; is the average detection value of the air pressure sensor in the i-th cycle, is the average detection value of the air pressure sensor in the i-1th cycle; is the theoretical gas pressure at the gas outlet of the pyrolysis reactor 3 during the reaction; is the evaluation coefficient of the outlet pressure of the pyrolysis reactor 3 on the reaction state, is the evaluation coefficient of the gas outlet flow rate of the pyrolysis reactor 3 on the reaction state;

[0087] When the reaction state coefficient is less than the first preset threshold value (indicating that the reaction is complete), the first alarm is controlled to sound an alarm and the timer detection value at this time is obtained. , and then discharge the solid and liquid in the pyrolysis reactor 3, and control the first weight collection device and the second weight collection device to work, and obtain the initial reaction result based on the first weight collection device, the second weight collection device, the pyrolysis reactor 3 monitoring device and the timer ;

[0088] in, is the density of the oil sludge obtained based on the sampling and collection module, S is the bottom area of ​​the pyrolysis reactor 3; D is the first material level; The first weight acquisition device detection value after pre-pyrolysis, The first weight acquisition device detection value after pre-pyrolysis;

[0089] when , , The control device controls the pyrolysis reactor 3 to perform batch pyrolysis at the rated working parameters, and the material level detection value in each pyrolysis is the first material level, and in each batch of pyrolysis, when the reaction state coefficient is less than the first preset threshold value, solids and liquids are discharged, and when the reaction state coefficient in each pyrolysis is less than the first preset threshold value, the timer detection value is greater than (K value is greater than 1 and less than 1.3), control the second alarm to sound an alarm;

[0090] During the batch pyrolysis process, after each pyrolysis, the weight of the solid and liquid discharged after the current pyrolysis is collected based on the first weight collection device and the second weight collection device, and the reaction reliability is obtained;

[0091] ;

[0092] is the reaction reliability of the Nth pyrolysis in the batch pyrolysis process; is the mass of solid discharged from the pyrolysis reactor 3 obtained by the first weight collection device during the Nth pyrolysis in the batch pyrolysis process; is the mass of the liquid discharged from the pyrolysis reactor 3 obtained by the second weight collection device during the Nth pyrolysis in the batch pyrolysis process; is the timer detection value when the reaction state coefficient of the Nth pyrolysis is less than the first preset threshold value during the batch pyrolysis process; , , They are the first weight, the second weight, and the third weight (the values ​​are greater than 0 and less than 1)

[0093] When the response reliability is not within the corresponding preset range, the third alarm will sound an alarm.

[0094] The beneficial effects of the above technical solution are:

[0095] 1. Before batch pyrolysis, pre-pyrolysis is performed first. During the pre-pyrolysis process, when the reaction state coefficient is less than the first preset threshold, the first alarm is controlled to sound an alarm to remind that the current reaction is completed; and the initial reaction result is obtained based on the pre-pyrolysis. ;

[0096] when , , The corresponding preset ranges are met, the control device controls the pyrolysis reactor 3 to perform batch pyrolysis at the rated working parameters, and the material level detection value in each pyrolysis is the first material level, that is, when the pre-pyrolysis reaction result is qualified, the pre-pyrolysis working parameter control is used to ensure the pyrolysis effect;

[0097] 2. During each batch of pyrolysis, when the reaction state coefficient in each pyrolysis is less than the first preset threshold, the timer detection value is greater than (K value is greater than 1 and less than 1.2), controls the second alarm to sound; that is, the reaction time for obtaining a full reaction in each batch of pyrolysis. When the reaction time is large, it indicates that the reaction rate is abnormal, reminding you to inspect the pyrolysis reactor.

[0098] 3. During the batch pyrolysis process, the weight of the solid and liquid discharged after the current pyrolysis is collected based on the first weight collection device and the second weight collection device, and the reaction reliability is obtained;

[0099] That is, during the batch pyrolysis process, when the pyrolysis ratio of each reactant is abnormal, an alarm is given in time to remind you to inspect and repair the pyrolysis reactor.

[0100] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A power plant coupled sludge pyrolysis treatment method, characterized in that: include: Step 1: crushing and filtering the oil sludge through the crushing and filtering device (1), and then dropping the filtered oil sludge into the feeding device (2); Step 2: The oil sludge is transported to the pyrolysis reactor (3) through the feeding device (2) to perform pyrolysis reaction at a certain temperature and pressure; Step 3: collecting the gas in the pyrolysis reaction process into a gas collecting device (8), collecting the liquid product into a liquid collector (5), and collecting the solid product into a collecting device (7); The gas collecting device (8) is fixed on the pyrolysis reactor (3); The gas collecting device (8) comprises: A shell (81) is fixed on the pyrolysis reactor (3); an air outlet (82) is arranged at the upper end of the shell (81); a first air inlet (83) is arranged on the left wall of the shell (81); the first air inlet (83) is connected to the air pipe (4) and the air outlet of the pyrolysis reactor (3); a transverse plate (86) is fixedly connected between the left and right inner walls at the lower end of the shell (81); a third rotating shaft (85) is rotatably connected to the middle of the transverse plate (86); A third rotating shaft (85) has a lower end rotatably connected to the lower inner wall of the shell (81), the third rotating shaft (85) is driven by a driving device, a threaded section is provided at the lower part of the third rotating shaft (85), the threaded section is threadedly connected to the lifting block (810), the fixed block (87) is fixedly connected to the upper end of the horizontal plate (86), the lifting block (810) is located above the fixed block (87), a gas cavity is provided at the upper part of the third rotating shaft (85), the gas cavity is connected to a compressed gas source via a connecting pipe, the outer side of the hollow part of the third rotating shaft (85) is connected to a blowing pipe (811), a plurality of air holes are provided at the lower side of the blowing pipe (811), and the blowing pipe (811) is connected to the gas cavity; Two groups of left-right symmetrical second filter plates (88), the lower ends of the second filter plates (88) being hinged to the outer sides of the upper parts of the fixing blocks (87), the front and rear sides of the second filter plates (88) being sealingly slidably connected to the front and rear inner walls of the housing (81), and the side of the second filter plates (88) away from the fixing blocks (87) being connected to the corresponding inner wall of the housing (81) via an elastic sealing cloth (84); The two groups of support rods (89) correspond to the two groups of second filter plates (88) respectively. The upper ends of the support rods (89) are hinged to the lifting blocks (810). The lower ends of the support rods (89) are connected to hinge seats. The hinge seats are slidably connected to the upper sides of the second filter plates (88).

2. The method for treating sludge by thermal decomposition in a power plant coupled with a power plant according to claim 1, characterized in that: The feeding device (2) comprises a feeding box (21) and a screw conveying shaft (22). The feeding box (21) is fixedly connected to the bottom plate (6) via a fixing bracket (23). The screw conveying shaft (22) is rotatably connected in the feeding box (21). The crushing and filtering device (1) comprises: A box body (12) is fixed to the upper end of the feeding device (2); a feeding port (11) is provided at the upper end of the box body (12); a discharge port (121) is provided at the lower end of the box body (12); and the discharge port (121) is connected to the feeding device (2); Crushing rollers (13), two crushing rollers (13) arranged in equal positions above and below are rotatably connected to the inner wall of the box body (12), the left side of the crushing roller (13) passes through the box body (12) and is connected to the first rotating shaft (14), and the first rotating shafts (14) adjacent to each other above and below are driven by a first belt transmission device; a second rotating shaft (113), the second rotating shaft (113) being fixedly connected to the left end of the spiral conveying shaft (22), the second rotating shaft (113) being driven by a first motor (111), the first motor (111) being fixed on a bracket (112), the second rotating shaft (113) and a first rotating shaft (14) being driven by a second belt transmission device; the bracket (112) being fixedly connected to the bottom plate (6); The first filter plate (19) is located inside the box (12) and below all the crushing rollers (13).

3. The method for treating sludge by thermal decomposition in a power plant coupled with a power plant according to claim 2, characterized in that: The crushing and filtering device (1) further comprises: A cylindrical rotating block (118) is fixedly sleeved on the left side of the second rotating shaft (113), and a curved sliding groove (120) is provided on the cylindrical rotating block (118); A moving block (114), the first filter plate (19) being fixedly connected to the moving blocks (114) on both left and right sides, the moving block (114) slidingly passing through the left and right walls of the box body (12), the moving block (114) at the right end being slidably sleeved in a sleeve (116), the sleeve (116) having an opening on the left side, the sleeve (116) being fixedly passed through the right wall of the box body (12) and extending outward, and a first spring (115) being provided between the right side of the moving block (114) and the right side of the inner wall of the sleeve (116); The L-shaped rod (117) is composed of a vertical section and a horizontal section integrally arranged at the upper right end of the vertical section, the right side of the horizontal section contacts or is fixed to the left wall of the moving block (114) on the left side, and a sliding section (119) is arranged at the lower end of the vertical section of the L-shaped rod (117), and the sliding section (119) is slidably connected in the sliding groove (120).

4. The method for treating sludge by pyrolysis coupled with a power plant according to claim 1, characterized in that: The driving device comprises: a first gear (813); the upper portion of the third rotating shaft (85) is fixedly connected to the first gear (813); the first gear (813) is meshed with a second gear (814) for transmission; the second gear (814) is driven by a second motor (812); and the second motor (812) is fixed to the upper end of the housing (81).

5. The method for treating oil sludge by pyrolysis coupled with a power plant according to claim 1, characterized in that: A dust suction pipe (815) is installed on the right wall of the upper end of the shell (81), and the dust suction pipe (815) is connected to the dust suction device.

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