An RTO system for treating volatile organic waste gas

Abstract

The present invention discloses an RTO system for treating volatile organic waste gas, which relates to the technical field of RTO systems and includes a heat storage box, a combustion box and a reverse combustion and blockage clearing mechanism. Three groups of heat storage boxes are arranged in parallel. A gas guiding shell cover is connected to the lower end of the heat storage box. A control mechanism is connected to the three gas guiding shell covers. The upper ends of the three heat storage boxes are connected to the lower end of the combustion box. A heat storage block is installed in the box cavity of the heat storage box. A perforation is provided in the center of the heat storage block, and an outer tube is penetrated through the perforation. An upper hole plate one is fixed in the upper part of the box cavity of the heat storage box. A lower hole plate one sleeved on the lower end of the outer tube is fixed in the upper part of the shell cavity of the gas guiding shell cover. And through openings one, two and three are respectively provided on the side pipe wall of the outer tube. The through opening one is located above the upper hole plate one. The through opening two is located in the upper partition cavity layer. The through opening three is located in the lower partition cavity layer. The present invention makes the RTO system for treating organic waste gas more efficient, with higher treatment quality, reduced operation cost and improved treatment progress.

Description

Technical Field

[0001] The present invention relates to the technical field of RTO systems, and specifically to an RTO system for treating volatile organic waste gas. Background Art

[0002] A regenerative thermal oxidizer (RTO for short) is an energy-saving and environmental protection device for treating medium and low concentration volatile organic waste gas. For toxic, harmful, non-recyclable VOCs and combustible gases, thermal oxidation is a relatively thorough treatment method. When the RTO system operates for a long time, organic matter coking will exist at the bottom of the regenerator, causing blockage of the bottom regenerator of the RTO. This easily leads to a decrease in air volume, an increase in the load of the fan, and a deterioration of the system negative pressure. It also easily causes the residence time of the waste gas in the system to be shortened, resulting in the organic matter in the waste gas not being fully oxidized and decomposed, reducing the treatment efficiency, and causing trace waste gas to overflow without treatment, further reducing the treatment efficiency. It is necessary to regularly stop the RTO for cooling for inspection and cleaning, increasing the operating cost and affecting the treatment progress.

[0003] Therefore, it is necessary to provide an RTO system for treating volatile organic waste gas to solve the problems raised in the above background art. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: An RTO system for treating volatile organic waste gas, including a regenerative heat storage box, a combustion box, and a reverse combustion and blockage cleaning mechanism. Three groups of the regenerative heat storage boxes are arranged in parallel. A gas guiding shell cover is connected to the lower end of the regenerative heat storage box. A control mechanism is connected to the three gas guiding shell covers. The upper ends of the three regenerative heat storage boxes are connected to the lower end of the combustion box. A burner is installed on the rear wall in the middle of the combustion box. A regenerative heat storage block is installed in the box cavity of the regenerative heat storage box. A perforation penetrating up and down is provided in the center of the regenerative heat storage block. An outer cylinder tube penetrates through the perforation. An upper hole plate one is fixed in the upper part of the box cavity of the regenerative heat storage box. The upper hole plate one also sleeves on the upper end of the outer cylinder tube. An upper separation cavity layer is formed between the upper hole plate one and the upper end of the regenerative heat storage block. A lower hole plate one is fixed in the upper part of the shell cavity of the gas guiding shell cover, and the lower hole plate one sleeves on the lower end of the outer cylinder tube. A lower separation cavity layer is formed between the lower hole plate one and the lower end of the regenerative heat storage block. Through openings one, two, and three are respectively provided on the side wall of the outer cylinder tube. Through opening one is located above the upper hole plate one. Through opening two is located in the upper separation cavity layer. Through opening three is located in the lower separation cavity layer. The reverse combustion and blockage cleaning mechanism is used to control the air flow above the upper hole plate one to flow into the regenerative heat storage block from the upper end or the lower end.

[0005] Further, an oxygen supply pipe is connected to the upper wall in the middle of the combustion box.

[0006] Further, air ports one, two, and three are respectively provided on the shell wall of the air guide shell. The control mechanism includes an intake pipe, an outlet pipe, and a backflush pipe. A conduit one communicating with air port one is provided on the intake pipe, and a valve one is installed on the conduit one. A conduit two communicating with air port two is provided on the outlet pipe, and a valve two is installed on the conduit two. A conduit three communicating with air port three is provided on the backflush pipe, and a valve three is installed on the conduit three. The intake end of the intake pipe is connected to a blower, and the exhaust end of the backflush pipe is connected to the intake pipe at the intake end of the blower.

[0007] Further, a pretreatment box is also connected to the intake end of the intake pipe.

[0008] Further, the backfire and blockage clearing mechanism includes an upper seat block, an upper orifice plate two, a lower orifice plate two, and a lifter. The upper seat block is slidably connected to the upper end cavity of the outer cylinder tube. An upper blocking ring for blocking through port one is fixed around the lower end of the upper seat block, and an upper conducting port for communicating with through port one is also provided on the upper blocking ring. An inner cylinder tube is fixed at the center of the lower end of the upper seat block. Through holes are provided on the tube wall of the inner cylinder tube. An enclosure shell is slidably sleeved outside the inner cylinder tube. The enclosure shell covers the outside of the through holes. The cavity of the enclosure shell is connected to through port two through a conducting pipe. A lower seat sleeve is fixed at the lower end of the inner cylinder tube. A lower blocking ring for blocking through port three is fixed at the upper end of the lower seat sleeve, and a lower conducting port for communicating with through port three is also provided on the lower blocking ring. The upper orifice plate two is arranged below the upper orifice plate one. The upper orifice plate two is connected to the upper seat block through an upper connecting rod. The lower orifice plate two is arranged below the lower orifice plate one. The lower orifice plate two is fixed on the lower seat sleeve. A diversion cavity is formed between the inner cylinder tube and the outer cylinder tube. The lifter is installed at the upper end of the combustion chamber. The lower output end of the lifter is connected to the upper seat block through a lifting rod. When the upper orifice plate two fits with the upper orifice plate one, the upper orifice plate two can block the upper orifice plate one. When the lower orifice plate two fits with the lower orifice plate one, the lower orifice plate two can block the lower orifice plate one.

[0009] Further, a row of upper round holes one are densely arranged on the upper orifice plate one, and a row of upper round holes two are densely arranged on the upper orifice plate two. The upper round holes one and the upper round holes two are arranged in a staggered manner. A row of lower round holes one are densely arranged on the lower orifice plate one, and a row of lower round holes two are densely arranged on the lower orifice plate two. The lower round holes one and the lower round holes two are arranged in a staggered manner.

[0010] Further, the lifting rod has an L-shaped structure, and the vertical rod wall of the lifting rod is arranged close to the side wall of the combustion chamber.

[0011] Further, the heat storage block includes a mesh disc one at the bottom layer. A heat storage body one is arranged on the upper end of the mesh disc one. A mesh disc two is arranged on the upper end of the heat storage body one. A heat storage body two is arranged on the upper end of the mesh disc two.

[0012] Furthermore, the first heat storage body is arranged in a close-packed cube structure, and the air guiding channels in the first heat storage body are in the up-and-down direction.

[0013] Furthermore, the second heat storage body is stacked with heat storage particles.

[0014] Compared with the prior art, the present invention provides an RTO system for treating volatile organic waste gas, which has the following beneficial effects:

[0015] In the present invention, through the setting of the reverse combustion and blockage clearing mechanism, when it is necessary to treat the organic matter coking existing at the bottom of the heat storage block, when the valve three at the corresponding position of the heat storage block to be treated is opened, the corresponding reverse combustion and blockage clearing mechanism is started at this time, and the gas flows into the air guiding shell cover at the corresponding position. The gas in the combustion chamber sequentially passes through the first through port, the upper conduction port, the diversion chamber, the lower conduction port, the third through port, the lower partition chamber layer, the lower end of the heat storage block, the upper end of the heat storage block, the upper partition chamber layer, the second through port, the conduction pipe, the enclosure shell cover cavity, the through hole and the lumen of the inner tube, and flows into the air guiding shell cover. Thus, the gas after the treatment of the organic waste gas in the combustion chamber is controlled and guided by the reverse combustion and blockage clearing mechanism, and enters from the lower end of the heat storage block for the first time, penetrates through the heat storage block, flows out from the upper end of the heat storage block, and is directly introduced into the air guiding shell cover by the inner tube. The gas with high heat generated by the combustion treatment acts on the bottom of the heat storage block for the first time, heats and bakes the bottom of the heat storage block at high temperature, and evaporates all the organic matter coking existing at the bottom of the heat storage block. At this time, the reverse combustion and blockage clearing mechanism is closed again, and the gas can flush and blow off the residual ash on the bottom of the heat storage block, making it clean and unobstructed, so as to perform non-stop cleaning treatment on the heat storage block to be treated, making the RTO system for treating organic waste gas more efficient, with higher treatment quality, lower operation cost and faster treatment progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the RTO system of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the control mechanism in the present invention;

[0018] Figure 3 It is a schematic structural diagram of the air guiding shell cover in the present invention;

[0019] Figure 4 It is a schematic structural diagram of the lifting rod in the present invention;

[0020] Figure 5 It is a schematic internal structure diagram of the heat storage box in the present invention;

[0021] Figure 6 It is a schematic structural diagram of the outer tube in the present invention;

[0022] Figure 7This is a schematic structural diagram of the reverse combustion clogging clearing mechanism in the present invention;

[0023] Figure 8 This is a schematic structural diagram of the conduction pipe in the present invention;

[0024] Figure 9 This is a schematic structural diagram of the heat storage block in the present invention;

[0025] Figure 10 This is a schematic structural diagram of the diversion cavity in the present invention;

[0026] In the figure: 1, heat storage box; 2, control mechanism; 3, combustion box; 4, heat storage block; 5, reverse combustion clogging clearing mechanism; 6, burner; 7, oxygen supply pipe; 11, air guide shell cover; 12, upper hole plate 1; 13, lower hole plate 1; 14, upper partition cavity layer; 15, lower partition cavity layer; 16, outer cylinder tube; 111, air port 1; 112, air port 2; 113, air port 3; 121, upper round hole 1; 131, lower round hole 1; 161, through port 1; 162, through port 2; 163, through port 3; 21, intake pipe; 22, outlet pipe; 23, backflush pipe; 24, fan; 25, pretreatment box; 211, conduit 1; 212, valve 1; 221, conduit 2; 222, valve 2; 231, conduit 3; 232, valve 3; 41, perforation; 42, mesh disc 1; 43, heat storage body 1; 44, mesh disc 2; 45, heat storage body 2; 51, inner cylinder tube; 52, upper seat block; 53, upper plugging ring; 54, upper connecting rod; 55, upper hole plate 2; 56, lower seat sleeve; 57, lower hole plate 2; 58, lower plugging ring; 59, enclosure cover; 510, lifter; 511, through hole; 512, diversion cavity; 531, upper conduction port; 551, upper round hole 2; 571, lower round hole 2; 581, lower conduction port; 591, conduction pipe; 5101, lifting rod. Detailed implementation manners

[0027] Refer to Figures 1-10, the present invention provides a technical solution: an RTO system for treating volatile organic waste gas, including a heat storage box 1, a combustion box 3 and a reverse combustion and blockage clearing mechanism 5. Three groups of the heat storage boxes 1 are arranged in parallel. The lower end of the heat storage box 1 is connected with a gas guide shell cover 11. The three gas guide shell covers 11 are connected with a control mechanism 2. The upper ends of the three heat storage boxes 1 are connected with the lower end of the combustion box 3. A burner 6 is installed on the rear wall in the middle of the combustion box 3. A heat storage block 4 is installed in the box cavity of the heat storage box 1. A through hole 41 penetrating up and down is provided in the center of the heat storage block 4. An outer cylinder tube 16 penetrates through the through hole 41. An upper hole plate 12 is fixed in the upper part of the box cavity of the heat storage box 1. The upper hole plate 12 also sleeves on the upper end of the outer cylinder tube 16. An upper partition cavity layer 14 is formed between the upper hole plate 12 and the upper end of the heat storage block 4. A lower hole plate 13 is fixed in the upper part of the shell cavity of the gas guide shell cover 11. And the lower hole plate 13 sleeves on the lower end of the outer cylinder tube 16. A lower partition cavity layer 15 is formed between the lower hole plate 13 and the lower end of the heat storage block 4. The side wall of the outer cylinder tube 16 is respectively provided with a first through port 161, a second through port 162 and a third through port 163. The first through port 161 is located above the upper hole plate 12. The second through port 162 is located in the upper partition cavity layer 14. The third through port 163 is located in the lower partition cavity layer 15. The reverse combustion and blockage clearing mechanism 5 is used to control the air flow above the upper hole plate 12 to flow into the heat storage block 4 from the upper end or the lower end.

[0028] In this embodiment, an oxygen supply pipe 7 is connected to the upper wall in the middle of the combustion box 3. Among them, the flame spraying direction of the burner 6 points from the back to the front, and the exhaust port of the oxygen supply pipe 7 vertically points to the middle of the flame, so as to be conducive to more complete combustion treatment of the organic waste gas.

[0029] In this embodiment, air ports 111, 112, and 113 are respectively provided on the shell wall of the air guide shell 11. The control mechanism 2 includes an intake pipe 21, an exhaust pipe 22, and a backflush pipe 23. A first conduit 211 communicating with the air port 111 is provided on the intake pipe 21, and a first valve 212 is installed on the first conduit 211. A second conduit 221 communicating with the air port 112 is provided on the exhaust pipe 22, and a second valve 222 is installed on the second conduit 221. A third conduit 231 communicating with the air port 113 is provided on the backflush pipe 23, and a third valve 232 is installed on the third conduit 231. The intake end of the intake pipe 21 is connected to a blower 24, and the exhaust end of the backflush pipe 23 is connected to the intake pipe 21 at the intake end of the blower 24. Specifically, the chambers of the three groups of regenerative boxes 1 are respectively set as chamber A, chamber B, and chamber C from left to right, and the chamber of the combustion box 3 is set as the combustion chamber. The first cycle program for continuous purification of organic waste gas is as follows: the first valve 212 corresponding to chamber A is opened, the organic waste gas enters the regenerative block 4 corresponding to chamber A, is burned by the burner 6, the second valve 222 corresponding to chamber B is opened, the purified gas after combustion passes through the regenerative block 4 corresponding to chamber B, flows into the exhaust pipe 22 and is discharged, the third valve 232 corresponding to chamber C is opened, a part of the waste gas after combustion passes through the regenerative block 4 corresponding to chamber C, flows into the backflush pipe 23 and is introduced into the intake pipe 21. The second cycle program for continuous purification of organic waste gas is as follows: the first valve 212 corresponding to chamber B is opened, the organic waste gas enters the regenerative block 4 corresponding to chamber B, is burned by the burner 6, the second valve 222 corresponding to chamber C is opened, the purified gas after combustion passes through the regenerative block 4 corresponding to chamber C, flows into the exhaust pipe 22 and is discharged, the third valve 232 corresponding to chamber A is opened, a part of the waste gas after combustion passes through the regenerative block 4 corresponding to chamber A, flows into the backflush pipe 23 and is introduced into the intake pipe 21. The third cycle program for continuous purification of organic waste gas is as follows: the first valve 212 corresponding to chamber C is opened, the organic waste gas enters the regenerative block 4 corresponding to chamber C, is burned by the burner 6, the second valve 222 corresponding to chamber A is opened, the purified gas after combustion passes through the regenerative block 4 corresponding to chamber A, flows into the exhaust pipe 22 and is discharged, the third valve 232 corresponding to chamber B is opened, a part of the waste gas after combustion passes through the regenerative block 4 corresponding to chamber B, flows into the backflush pipe 23 and is introduced into the intake pipe 21.

[0030] In this embodiment, a pretreatment box 25 is further connected to the intake end of the intake pipe 21 to filter and pretreat the particulate matter in the organic waste gas.

[0031] In this embodiment, the reverse combustion clogging clearing mechanism 5 includes an upper seat block 52, a second upper orifice plate 55, a second lower orifice plate 57, and a lifter 510. The upper seat block 52 is slidably connected to the upper end cavity of the outer cylinder tube 16. A upper blocking ring 53 for blocking the first through port 161 is fixed to the outer periphery of the lower end of the upper seat block 52. A upper conduction port 531 for communicating with the first through port 161 is further provided on the upper blocking ring 53. An inner cylinder tube 51 is fixed to the center of the lower end of the upper seat block 52. A through hole 511 is provided on the tube wall of the inner cylinder tube 51. A surrounding shell cover 59 is slidably sleeved outside the inner cylinder tube 51. The surrounding shell cover 59 covers the outside of the through hole 511. The cavity of the surrounding shell cover 59 is connected to the second through port 162 through a conduction tube 591. A lower seat sleeve 56 is fixed to the lower end of the inner cylinder tube 51. A lower blocking ring 58 for blocking the third through port 163 is fixed to the upper end of the lower seat sleeve 56. A lower conduction port 581 for communicating with the third through port 163 is further provided on the lower blocking ring 58. The second upper orifice plate 55 is arranged below the first upper orifice plate 12. The second upper orifice plate 55 is connected to the upper seat block 52 through an upper connecting rod 54. The second lower orifice plate 57 is arranged below the first lower orifice plate 13. The second lower orifice plate 57 is fixed to the lower seat sleeve 56. A diversion cavity 512 is formed between the inner cylinder tube 51 and the outer cylinder tube 16. The lifter 510 is installed at the upper end of the combustion chamber 3. The lower output end of the lifter 510 is connected to the upper seat block 52 through a lifting rod 5101. When the second upper orifice plate 55 is in contact with the first upper orifice plate 12, the second upper orifice plate 55 can block the first upper orifice plate 12. When the second lower orifice plate 57 is in contact with the first lower orifice plate 13, the second lower orifice plate 57 can block the first lower orifice plate 13. Specifically, when the reverse combustion clogging clearing mechanism 5 is not activated, as Figure 10 shown, at this time, the second upper orifice plate 55 is separated from the first upper orifice plate 12, the second lower orifice plate 57 is separated from the first lower orifice plate 13, the upper blocking ring 53 blocks the first through port 161, the lower blocking ring 58 blocks the third through port 163. When the reverse combustion clogging clearing mechanism 5 is activated, combined with Figure 5 shown, the lifter 510 controls the lifting rod 5101 to drive the upper seat block 52 to move upward. At this time, the second upper orifice plate 55 is in contact with the first upper orifice plate 12, the second lower orifice plate 57 is in contact with the first lower orifice plate 13, the first through port 161 is communicated with the upper conduction port 531, and the third through port 163 is communicated with the lower conduction port 581;

[0032] Among them, when the inner cylinder tube 51 moves up and down, the conduction tube 591, the cavity of the surrounding shell cover 59, and the through hole 511 are all in a communicating state;

[0033] Among them, during the process of the organic waste gas being treated by the RTO system, when the reverse combustion clogging clearing mechanism 5 is not activated, during the process of the gas in the combustion chamber 3 flowing into the air guide shell cover 11, among them, the first flow mode of the gas flowing through the heat storage block 4, combined with Figure 10As shown, at this time, when the gas in the combustion chamber 3 flows into the air guide housing 11, the gas in the combustion chamber 3 sequentially passes through the upper orifice plate one 12, the upper orifice plate two 55, the upper partition cavity layer 14, the upper end of the heat storage block 4, the lower end of the heat storage block 4, the lower partition cavity layer 15, the lower orifice plate one 13, and the lower orifice plate two 57, and then flows into the air guide housing 11; for the second flow mode of the gas flowing through the heat storage block 4, when the gas in the air guide housing 11 flows into the combustion chamber 3, the gas in the air guide housing 11 sequentially passes through the lower orifice plate two 57, the lower orifice plate one 13, the lower partition cavity layer 15, the lower end of the heat storage block 4, the upper end of the heat storage block 4, the upper partition cavity layer 14, the upper orifice plate two 55, and the upper orifice plate one 12, and then flows into the combustion chamber 3, and the cycle program one, cycle program two, and cycle program three for continuous purification of organic waste gas are carried out in sequence;

[0034] Among them, during the process of treating organic waste gas by the RTO system, when it is necessary to treat the organic matter coking stored at the bottom of the heat storage block 4, when the valve three 232 corresponding to the position of the heat storage block 4 to be treated is opened, that is to say, the corresponding reverse combustion and blockage clearing mechanism 5 is started at this time; for the third flow mode of the gas flowing through the heat storage block 4, at this time, the gas flows into the air guide housing 11 at the corresponding position. The gas in the combustion chamber 3 sequentially passes through the through port one 161, the upper conduction port 531, the diversion cavity 512, the lower conduction port 581, the through port three 163, the lower partition cavity layer 15, the lower end of the heat storage block 4, the upper end of the heat storage block 4, the upper partition cavity layer 14, the through port two 162, the conduction pipe 591, the enclosure cover 59 cover cavity, the through hole 511, and the inner cylinder pipe 51 pipe cavity, and then flows into the air guide housing 11. Thus, the gas after treating the organic waste gas in the combustion chamber 3 is controlled and guided by the reverse combustion and blockage clearing mechanism 5, enters from the lower end of the heat storage block 4 for the first time, penetrates through the heat storage block 4, flows out from the upper end of the heat storage block 4, and is directly introduced into the air guide housing 11 by the inner cylinder pipe 51. The high-temperature gas formed by combustion treatment acts on the bottom of the heat storage block 4 for the first time, performs high-temperature heating and baking on the bottom of the heat storage block 4, and evaporates all the organic matter coking stored at the bottom of the heat storage block 4. At this time, the reverse combustion and blockage clearing mechanism 5 is closed again, and the gas can wash and blow off the residual ash on the bottom of the heat storage block 4 to make it clean and unobstructed, so as to perform non-stop cleaning treatment on the heat storage block 4 to be treated, making the RTO system for treating organic waste gas more efficient and with higher treatment quality.

[0035] In this embodiment, the upper orifice plate 12 is densely provided with an array of upper round orifices 121, and the upper orifice plate 55 is densely provided with an array of upper round orifices 551. The upper round orifices 121 and the upper round orifices 551 are arranged in a staggered manner. The lower orifice plate 13 is densely provided with an array of lower round orifices 131, and the lower orifice plate 57 is densely provided with an array of lower round orifices 571. The lower round orifices 131 and the lower round orifices 571 are arranged in a staggered manner, which is beneficial to the more uniform distribution of the gas when it enters the upper or lower end of the regenerator block 4, so as to give full play to the role of the regenerator block 4, and at the same time make the treatment of the gas more uniform and sufficient.

[0036] In this embodiment, the lifting rod 5101 has an L-shaped structure, and the vertical rod wall of the lifting rod 5101 is arranged close to the side wall of the combustion chamber 3 to prevent the lifting rod 5101 from affecting the gas flow pattern in the burner 6.

[0037] In this embodiment, the regenerator block 4 includes a first mesh disc 42 at the bottom layer. A first regenerator 43 is arranged on the upper end of the first mesh disc 42. A second mesh disc 44 is arranged on the upper end of the first regenerator 43. A second regenerator 45 is arranged on the upper end of the second mesh disc 44. Through the arrangement of the first mesh disc 42, the gas can enter the lower end of the regenerator block 4 more fully. Through the arrangement of the second mesh disc 44, it is beneficial to stack the first regenerator 43 and the second regenerator 45 in different forms.

[0038] In this embodiment, the first regenerator 43 is arranged in a closely arranged cube structure, and the gas guiding channels in the first regenerator 43 are in the up and down directions, which is beneficial to the gas entering the regenerator block 4. When organic matter is sintered at the bottom of the regenerator block 4, it is also beneficial to bake and volatilize the organic matter and blow off the ash.

[0039] In this embodiment, the second regenerator 45 is stacked with regenerator particles, which is beneficial to the heat conduction between the gas and the second regenerator.

[0040] In specific implementation, it includes the following steps:

[0041] Step 1: Set the chambers of the three regenerator boxes 1 from left to right as chamber A, chamber B, and chamber C respectively;

[0042] Step 2: The first cycle program for continuous purification of organic waste gas. The first valve 212 corresponding to chamber A is opened, and the organic waste gas enters the regenerator block 4 corresponding to chamber A and is burned by the burner 6. The second valve 222 corresponding to chamber B is opened, and the purified gas after combustion passes through the regenerator block 4 corresponding to chamber B and flows into the outlet pipe 22 and is discharged. The third valve 232 corresponding to chamber C is opened, and part of the waste gas after combustion passes through the regenerator block 4 corresponding to chamber C, flows into the backwashing pipe 23 and is introduced into the inlet pipe 21;

[0043] Step 3, the second cycle program for continuous purification of organic waste gas: Valve 212 corresponding to Chamber B is opened, and the organic waste gas enters the heat storage block 4 corresponding to Chamber B, and is burned by the burner 6. Valve 222 corresponding to Chamber C is opened, and the purified gas after combustion passes through the heat storage block 4 corresponding to Chamber C, flows into the outlet pipe 22 and is discharged. Valve 232 corresponding to Chamber A is opened, and a part of the waste gas after combustion passes through the heat storage block 4 corresponding to Chamber A, flows into the backflush pipe 23 and is introduced into the inlet pipe 21.

[0044] Step 4, the third cycle program for continuous purification of organic waste gas: Valve 212 corresponding to Chamber C is opened, and the organic waste gas enters the heat storage block 4 corresponding to Chamber C, and is burned by the burner 6. Valve 222 corresponding to Chamber A is opened, and the purified gas after combustion passes through the heat storage block 4 corresponding to Chamber A, flows into the outlet pipe 22 and is discharged. Valve 232 corresponding to Chamber B is opened, and a part of the waste gas after combustion passes through the heat storage block 4 corresponding to Chamber B, flows into the backflush pipe 23 and is introduced into the inlet pipe 21.

[0045] Step 5, measure the inlet and exhaust pressures of the organic waste gas. When the pressure difference between the inlet pressure and the exhaust pressure exceeds a certain value, the resistance of the gas passing through the heat storage block 4 will increase. That is to say, organic matter condenses and cokes at the bottom of the heat storage block 4, resulting in blockage. At this time, determine or regularly select the heat storage block 4 to be processed as required. When the valve 232 at its corresponding position is opened, start the reverse combustion and blockage cleaning mechanism 5. That is to say, the gas processed by the reverse combustion and blockage cleaning mechanism 5 can enter the inlet pipe 21 again, and then flow into the combustion chamber 3 again for combustion treatment. Among them, through high-temperature backflushing and reverse combustion blockage cleaning treatment, all the condensed cokes are vaporized or oxidized, and the heat storage block 4 is efficiently cleaned.

[0046] As mentioned above, it is only a preferred specific implementation mode of the invention, but the protection scope of the invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the invention, according to the technical solution of the invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the invention.

Claims

1. An RTO system for treating volatile organic waste gas, comprising a heat storage box (1), a combustion box (3) and a backburning clearing mechanism (5), wherein three groups of the heat storage boxes (1) are arranged in parallel, the lower end of the heat storage box (1) is connected to an air guide shell (11), the three groups of the air guide shell (11) are connected to a control mechanism (2), the upper ends of the three groups of the heat storage boxes (1) are connected to the lower end of the combustion box (3), and the characteristics are as follows: A burner (6) is installed on the middle rear wall of the combustion box (3), a heat storage block (4) is installed in the box cavity of the heat storage box (1), a through hole (41) penetrating from top to bottom is provided in the center of the heat storage block (4), an outer tube (16) penetrates through the through hole (41), an upper perforated plate (12) is fixed on the upper part of the box cavity of the heat storage box (1), the upper perforated plate (12) is also sleeved on the upper end of the outer tube (16), an upper compartment layer (14) is formed between the upper perforated plate (12) and the upper end of the heat storage block (4), a lower perforated plate (13) is fixed on the upper part of the shell cavity of the air guide cover (11), and the lower perforated plate (13) is 13) is sleeved on the lower end of the outer tube (16), a lower compartment layer (15) is formed between the lower orifice plate 1 (13) and the lower end of the heat storage block (4), the side tube wall of the outer tube (16) is respectively provided with a first opening (161), a second opening (162) and a third opening (163), the first opening (161) is located above the upper orifice plate 1 (12), the second opening (162) is located in the upper compartment layer (14), and the third opening (163) is located in the lower compartment layer (15), and the anti-burning clearing mechanism (5) is used to control the airflow above the upper orifice plate 1 (12) to flow into the upper end or the lower end of the heat storage block (4); The backburning clearing mechanism (5) comprises an upper seat block (52), an upper orifice plate (55), a lower orifice plate (57) and a lifter (510); the upper seat block (52) is slidably connected to the upper end tube cavity of the outer tube (16); an inner tube (51) is fixed to the center of the lower end of the upper seat block (52); a lower seat sleeve (56) is fixed to the lower end of the inner tube (51); the upper orifice plate (55) is arranged below the upper orifice plate (12); the upper orifice plate (55) and the upper seat block (52) are connected via an upper connecting rod (54); the lower orifice plate (57) is arranged below the lower orifice plate (13); and the lower orifice plate (57) is fixed to the lower seat sleeve (56); The upper hole plate 1 (12) is densely covered with an array of upper circular holes 1 (121), the upper hole plate 2 (55) is densely covered with an array of upper circular holes 2 (551), the upper circular holes 1 (121) and the upper circular holes 2 (551) are staggered, the lower hole plate 1 (13) is densely covered with an array of lower circular holes 1 (131), the lower hole plate 2 (57) is densely covered with an array of lower circular holes 2 (571), the lower circular holes 1 (131) and the lower circular holes 2 (571) are staggered.

2. The RTO system for treating volatile organic waste gas according to claim 1, characterized in that: The upper wall of the middle part of the combustion box (3) is connected with an oxygen supplement pipe (7).

3. The RTO system for treating volatile organic waste gas according to claim 1, characterized in that: The shell wall of the air guide housing (11) is respectively provided with an air port 1 (111), an air port 2 (112) and an air port 3 (113); the control mechanism (2) comprises an air inlet pipe (21), an air outlet pipe (22) and a backflush pipe (23); the air inlet pipe (21) is provided with a conduit 1 (211) communicating with the air port 1 (111); a valve 1 (212) is installed on the conduit 1 (211); the air outlet pipe (22) is provided with a valve 1 (212) communicating with the air port 1 A conduit (221) is connected to the second air port (112), and a valve (222) is installed on the conduit (221). The back-blowing pipe (23) is provided with a conduit (231) connected to the air port (113), and a valve (232) is installed on the conduit (231). The air inlet end of the air inlet pipe (21) is connected to a fan (24), and the exhaust end of the back-blowing pipe (23) is connected to the air inlet pipe (21) at the air inlet end of the fan (24).

4. The RTO system for treating volatile organic waste gas according to claim 3, characterized in that: The air inlet end of the air inlet pipe (21) is also connected to a pretreatment box (25).

5. The RTO system for treating volatile organic waste gas according to claim 1, characterized in that: An upper blocking ring (53) for blocking the first passage (161) is fixed to the periphery of the lower end of the upper seat block (52), and an upper conducting port (531) for communicating with the first passage (161) is also provided on the upper blocking ring (53). A through hole (511) is provided on the tube wall of the inner tube (51). A casing cover (59) is slidably sleeved on the outer side of the inner tube (51). The casing cover (59) covers the outside of the through hole (511). The casing cover (59) is connected to the second passage (162) through a conducting pipe (591). A lower blocking ring (58) for blocking the third passage (163) is fixed to the upper end of the lower seat sleeve (56). The lower blocking ring (58) ) is also provided with a lower conducting port (581) for communicating with the passage three (163); a flow guide cavity (512) is formed between the inner tube (51) and the outer tube (16); the lifter (510) is installed at the upper end of the combustion box (3); the lower output end of the lifter (510) is connected to the upper seat block (52) through a lifting rod (5101); when the upper orifice plate two (55) is in contact with the upper orifice plate one (12), the upper orifice plate two (55) can block the upper orifice plate one (12); when the lower orifice plate two (57) is in contact with the lower orifice plate one (13), the lower orifice plate two (57) can block the lower orifice plate one (13).

6. The RTO system for treating volatile organic waste gas according to claim 5, characterized in that: The lifting rod (5101) is in an L-shaped structure, and the vertical rod wall of the lifting rod (5101) is arranged close to the side box wall of the combustion box (3).

7. The RTO system for treating volatile organic waste gas according to claim 1, characterized in that: The heat storage block (4) comprises a mesh plate 1 (42) located at the bottom layer, a heat storage body 1 (43) is arranged on the upper end of the mesh plate 1 (42), a mesh plate 2 (44) is arranged on the upper end of the heat storage body 1 (43), and a heat storage body 2 (45) is arranged on the upper end of the mesh plate 2 (44).

8. The RTO system for treating volatile organic waste gas according to claim 7, characterized in that: The heat storage body 1 (43) is arranged closely in a cubic structure, and the air guide channel in the heat storage body 1 (43) is in an up-down direction.

9. The RTO system for treating volatile organic waste gas according to claim 7, characterized in that: The second heat storage body (45) is stacked with heat storage particles.

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