A PNCR denitrification treatment device

Abstract

The invention relates to the technical field of waste gas treatment, and in particular to a PNCR denitration treatment device; the device can make a polymer denitration agent fully contact with waste gas, make flue gas and the polymer denitration agent fully react, reduce the waste of the polymer denitration agent, and achieve better denitration effect; the device comprises a boiler furnace, a smoke exhaust pipe, a mounting platform, a blower, a venturi jet pump, a material storage box, a first connecting pipe, a second connecting pipe, an air equalizing pipe group, a mounting plate, a plurality of reaction tubes and a mounting frame, a working chamber is arranged in the boiler furnace, the mounting platform is fixedly arranged at the right end of the boiler furnace, the blower is fixedly arranged on the mounting frame, the output end of the first connecting pipe is connected with the input end of the blower, the venturi jet pump is fixedly arranged at the top of the material storage box, a material storage chamber is arranged in the material storage box, a plurality of evenly distributed mounting through holes are arranged on the mounting plate, a plurality of evenly distributed spray pipes are arranged at the output end of the air equalizing pipe group, and spiral guide sheets are arranged in the plurality of reaction tubes.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a PNCR denitration treatment device. Background Art

[0002] As we all know, at present, SNCR and SCR are the two most widely used flue gas denitrification technologies. SNCR denitrification technology is to spray amino reducing agent or urea at the appropriate temperature (850-1000℃) of the furnace or flue, without catalyst, and use the NH3 released by the reducing agent to selectively reduce NOx in the flue gas to harmless N2 and water. The following shortcomings exist in the SNCR process: the injection of 10-20% ammonia or urea aqueous solution into the reaction zone will cause a sudden and substantial drop in temperature in the high-temperature reaction zone, and the temperature of each area in the reaction zone is inconsistent, resulting in low denitrification efficiency. At present, the general denitrification efficiency is only 30-50%, and the denitrification effect of the system at 900℃ is almost zero, which will also affect the combustion efficiency in the furnace. However, due to the medium denitrification rate of SNCR technology, no catalyst is required, the operating cost is low, and the construction period is short, it is suitable for flue gas denitrification of small and medium-sized boilers; and SCR has become the preferred method for controlling NOx in flue gas due to its advantages such as low reaction temperature and high denitrification efficiency. The catalyst is the core. The performance of the catalyst directly affects the NOx removal effect. Its cost accounts for about 20% to 40% of the total cost of the SCR system, and the operating cost accounts for 40-50%. The SCR denitrification efficiency is high, but its process is complicated, especially the low-temperature SCR catalyst is expensive, has a short service life, and has high operation and maintenance costs. The PNCR technology uses polymer materials as carriers for the denitrification agent, polymerizes the amino components and loads them on the polymer materials to form a powder material. This powder material is directly sprayed into the furnace using a pneumatic conveying device. The temperature window of the spray is between 800 and 900°C. At high temperatures, the chemical bonds connecting the amino groups and the polymers are broken, releasing a large number of amino-containing functional groups. The amino groups react with NOx in the flue gas to achieve the purpose of removing NOx. The process system is simple, the operation and maintenance costs are low, the solid powder is safe and convenient to transport and store, and the denitrification rate is high. However, it was found during use that the polymer denitrification agent was not in sufficient contact with the flue gas and the reaction was incomplete, resulting in a waste of the polymer denitrification agent, and there are certain limitations in its use. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the present invention provides a PNCR denitrification treatment device which can fully contact the polymer denitrification agent with the exhaust gas, make the flue gas and the polymer denitrification agent fully react, reduce the waste of the polymer denitrification agent, and achieve better denitrification effect.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: comprising a boiler furnace, a smoke exhaust pipe, a mounting platform, a blower, a Venturi jet pump, a material storage box, a first connecting pipe, a second connecting pipe, an air equalizing pipe group, a mounting plate, a plurality of reaction tube groups and a mounting frame, wherein a working chamber is arranged in the boiler furnace, the smoke exhaust pipe is arranged at the top end of the boiler furnace, the input end of the boiler furnace is communicated with the working chamber, the mounting platform is fixedly arranged at the right end of the boiler furnace, the material storage box and the mounting frame are both fixedly arranged at the top left part of the mounting platform, the blower is fixedly arranged on the mounting frame, the input end of the first connecting pipe is communicated with the inside of the smoke exhaust pipe, the output end of the first connecting pipe is communicated with the input end of the blower, the Venturi jet pump is fixedly arranged at the top end of the material storage box, and a There is a material storage chamber, the output end of the blower is connected with the right input end of the Venturi jet pump, the bottom input end of the Venturi jet pump extends into the material storage chamber, the output end of the Venturi jet pump is connected with the input end of the second connecting pipe, the air equalizing pipe group and the mounting plate are fixedly arranged in the working chamber, the mounting plate is located at the upper part of the air equalizing pipe group, the output end of the second connecting pipe passes through the right end wall of the boiler furnace from the right end of the boiler furnace and is connected with the input end of the air equalizing pipe group, a plurality of groups of evenly distributed mounting through holes are arranged on the mounting plate, the bottom ends of the plurality of groups of reaction cylinders respectively pass through the plurality of groups of mounting through holes and are fixedly connected to the mounting plate, a plurality of groups of evenly distributed spray pipes are arranged at the output end of the air equalizing pipe group, the spray pipes respectively extend into the bottom of the reaction cylinder, and the plurality of groups of reaction cylinders are all provided with spiral guide sheets.

[0007] Preferably, it also includes a spiral feed barrel, a spiral conveying rod, a reducer, a first drive motor and a feed hopper, a containing chamber is arranged in the feed hopper, the spiral feed barrel, the reducer and the first drive motor are all fixedly arranged on the top right part of the mounting platform, the spiral conveying rod is rotatably arranged in the spiral feed barrel, the output end of the first drive motor is transmission-connected with the input end of the reducer, the output end of the reducer is connected with the output end of the spiral conveying rod, a discharge pipe is arranged at the bottom end of the feed hopper, the input end of the discharge pipe extends into the containing chamber, the output end of the discharge pipe extends into the spiral feed barrel, the output end of the spiral feed barrel extends into the storage chamber, a feed port is arranged at the top end of the feed hopper, and a baffle is arranged on the feed port.

[0008] Preferably, it also includes a suction fan, a spiral heating tube, an air inlet pipe and an air outlet pipe, the spiral heating tube is spirally coiled on the outer wall of the feed hopper, the input end of the air inlet pipe is connected to the smoke exhaust duct, the output end of the air inlet pipe is connected to the input end of the suction fan, the output end of the suction fan is connected to the input end of the spiral heating tube, the output end of the spiral heating tube is connected to the input end of the air outlet pipe, and the output end of the air outlet pipe is connected to the smoke exhaust duct.

[0009] Preferably, it also includes a rotating shaft and a second drive motor, wherein the rotating shaft is rotatably arranged in the feed hopper, the second drive motor is fixedly arranged at the top of the feed hopper, the output end of the second drive motor is transmission-connected to the top of the rotating shaft, and the rotating shaft is provided with a plurality of groups of evenly distributed stirring blades.

[0010] Preferably, the bottom ends of the multiple groups of reaction cylinders are all provided with bell mouths.

[0011] Preferably, it further comprises a ventilation pipe, wherein the input end of the ventilation pipe is communicated with the material storage chamber.

[0012] Preferably, a dustproof filter element is provided in the ventilation pipe.

[0013] Preferably, the multiple groups of reaction cylinders are located in the temperature window of 800°C-900°C in the working chamber.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present invention provides a PNCR denitration treatment device, which has the following beneficial effects: the PNCR denitration treatment device starts the blower so that the blower blows the flue gas in the exhaust pipe into the venturi jet pump, thereby generating negative pressure in the venturi jet pump, and sucking the polymer denitrification agent in the storage box through the bottom input end of the venturi jet pump, and entering the gas equalizing pipe group from the left output end of the venturi jet pump and the second connecting pipe, and then spraying it into the reaction cylinder through multiple groups of spray pipes. At this time, the polymer denitrification agent meets the flue gas in the working chamber in the reaction cylinder, and the flue gas and the polymer denitrification agent are mixed in the reaction cylinder through the action of the spiral guide sheet. The inner spiral rises, which prolongs the contact time between the flue gas and the polymer denitrification agent. In the process of spiral rise, the flue gas fully reacts with the polymer denitrification agent to carry out denitrification treatment, and a small amount of unreacted polymer denitrification flue gas enters the exhaust duct. At this time, under the action of the blower, a small amount of unreacted polymer denitrification agent flows back to the working chamber through the first connecting pipe, the Venturi jet pump and the second connecting pipe for secondary reaction. At the same time, a small amount of unreacted nitride in the flue gas undergoes secondary reaction, which can make the polymer denitrification agent fully contact with the exhaust gas, make the flue gas and the polymer denitrification agent fully react, reduce the waste of polymer denitrification agent, and achieve better denitrification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal front structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the gas pipe group of the present invention;

[0019] Figure 4 It is a schematic diagram of the arrangement of the reaction cylinder and its internal structure of the present invention;

[0020] Figure 5 The present invention Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0021] Figure 6 The present invention Figure 2 A schematic diagram of the partially enlarged structure at B in the middle;

[0022] Markings in the attached drawings: 1. boiler furnace; 2. smoke exhaust duct; 3. installation platform; 4. blower; 5. venturi jet pump; 6. storage box; 7. first connecting pipe; 8. second connecting pipe; 9. gas equalizing pipe group; 10. mounting plate; 11. reaction cylinder; 12. mounting frame; 13. mounting through hole; 14. spray pipe; 15. spiral guide sheet; 16. spiral feed cylinder; 17. spiral conveying rod; 18. reducer; 19. first drive motor; 20. feed hopper; 21. discharge pipe; 22. feed port; 23. suction fan; 24. spiral heating pipe; 25. air inlet pipe; 26. air outlet pipe; 27. rotating shaft; 28. second drive motor; 29. ​​stirring blade; 30. bell mouth; 31. ventilation pipe; 32. dust filter element. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0024] See also Figure 1-6A PNCR denitration treatment device of the present invention comprises a boiler furnace 1, a smoke exhaust pipe 2, a mounting platform 3, a blower 4, a venturi jet pump 5, a material storage box 6, a first connecting pipe 7, a second connecting pipe 8, an air equalizing pipe group 9, a mounting plate 10, a plurality of reaction tubes 11 and a mounting frame 12. A working chamber is arranged in the boiler furnace 1, the smoke exhaust pipe 2 is arranged at the top of the boiler furnace 1, the input end of the boiler furnace 1 is communicated with the working chamber, the mounting platform 3 is fixedly arranged at the right end of the boiler furnace 1, the material storage box 6 and the mounting frame 12 are both fixedly arranged at the top left part of the mounting platform 3, the blower 4 is fixedly arranged on the mounting frame 12, the input end of the first connecting pipe 7 is communicated with the inside of the smoke exhaust pipe 2, the output end of the first connecting pipe 7 is communicated with the blower 4, and the output end of the first connecting pipe 7 is communicated with the blower 4. The input end of the blower 4 is connected, the venturi jet pump 5 is fixedly arranged at the top of the storage box 6, and a storage cavity is arranged in the storage box 6. The output end of the blower 4 is connected with the right end input end of the venturi jet pump 5, and the bottom end input end of the venturi jet pump 5 extends into the storage cavity. The output end of the venturi jet pump 5 is connected with the input end of the second connecting pipe 8, the gas equalizing pipe group 9 and the mounting plate 10 are fixedly arranged in the working chamber, and the mounting plate 10 is located on the upper part of the gas equalizing pipe group 9. The output end of the second connecting pipe 8 passes through the right end wall of the boiler furnace 1 from the right end of the boiler furnace 1 and is connected with the input end of the gas equalizing pipe group 9. A plurality of groups of evenly distributed mounting through holes 13 are arranged on the mounting plate 10, and the bottom ends of the plurality of groups of reaction cylinders 11 respectively pass through the plurality of groups of mounting through holes 13 and are connected The mounting plate 10 is fixedly connected, and a plurality of uniformly distributed spray pipes 14 are arranged at the output end of the gas distribution pipe group 9, and the spray pipes 14 extend into the bottom of the reaction tube 11 respectively, and a spiral guide sheet 15 is arranged in each of the plurality of reaction tubes 11; by starting the blower 4, the blower 4 blows the flue gas in the smoke exhaust pipe 2 into the venturi jet pump 5, so that a negative pressure is generated in the venturi jet pump 5, and the polymer denitrification agent in the storage box 6 is sucked in through the bottom input end of the venturi jet pump 5, and enters into the gas distribution pipe group 9 from the left output end of the venturi jet pump 5 and the second connecting pipe 8, and is sprayed into the reaction tube 11 through the plurality of spray pipes 14, at which time the polymer denitrification agent meets the flue gas in the working chamber in the reaction tube 11, and the flue gas in the working chamber meets the flue gas in the reaction tube 11 through the spiral guide sheet 15. The flue gas and the polymer denitrification agent are caused to spirally rise in the reaction tube 11, thereby prolonging the contact time between the flue gas and the polymer denitrification agent. In the process of spiral rising, the flue gas and the polymer denitrification agent fully react to carry out denitrification treatment, and a small amount of unreacted polymer denitrification agent flue gas enters the smoke exhaust duct 2. At this time, under the action of the blower 4, a small amount of unreacted polymer denitrification agent flows back to the working chamber through the first connecting pipe 7, the Venturi jet pump 5 and the second connecting pipe 8 to carry out a secondary reaction. At the same time, a small amount of unreacted nitride in the flue gas is caused to carry out a secondary reaction, so that the polymer denitrification agent can be fully contacted with the exhaust gas, the flue gas and the polymer denitrification agent can fully react, the waste of the polymer denitrification agent can be reduced, and the denitrification effect is better.

[0025] A PNCR denitration treatment device of the present invention also includes a spiral feed barrel 16, a spiral conveying rod 17, a reducer 18, a first drive motor 19 and a feed hopper 20. A holding chamber is provided in the feed hopper 20. The spiral feed barrel 16, the reducer 18 and the first drive motor 19 are all fixedly arranged at the top right part of the mounting platform 3. The spiral conveying rod 17 is rotatably arranged in the spiral feed barrel 16. The output end of the first drive motor 19 is transmission-connected to the input end of the reducer 18. The output end of the reducer 18 is connected to the output end of the spiral conveying rod 17. A discharge pipe 21 is provided at the bottom end of the feed hopper 20. The input end of the discharge pipe 21 extends into the holding chamber, and the output end of the discharge pipe 21 extends into the The feed hopper 20 is provided with a feed port 22 at the top thereof, and a baffle is provided on the feed port 22; the polymer denitrification agent is put into the feed hopper 20, the first drive motor 19 is connected to the mains and started, so that the first drive motor 19 drives the reducer 18 to rotate, and the reducer 18 drives the spiral conveying rod 17 to rotate, so that the polymer denitrification agent in the feed hopper 20 enters the storage cavity through the spiral feed hopper 16, and the speed of the reducer 18 is adjusted to change the speed of the spiral conveying rod 17, so that the amount of the polymer denitrification agent entering the storage box 6 is changed, so that the amount of the suction of the Venturi jet pump 5 is increased. The feed hopper 20 also includes a suction fan 23, a spiral heating tube 24, an air inlet pipe 25 and an air outlet pipe 26. The spiral heating tube 24 is spirally wound on the outer wall of the feed hopper 20. The input end of the air inlet pipe 25 is connected to the smoke exhaust pipe 2, and the output end of the air inlet pipe 25 is connected to the input end of the suction fan 23. The output end of the suction fan 23 is connected to the input end of the spiral heating tube 24. The output end of the spiral heating tube 24 is connected to the input end of the air outlet pipe 26, and the output end of the air outlet pipe 26 is connected to the smoke exhaust pipe 2; through The suction fan 23 is started, so that the suction fan 23 sucks the high-temperature flue gas in the flue gas duct into the spiral heating tube 24, so that the spiral heating tube 24 heats the feed hopper 20, preheats and dries the polymer denitrification agent, evaporates the water in the polymer denitrification agent, and preheats at the same time, thereby reducing the excessive impact of the polymer denitrification agent entering the working chamber on the temperature in the working chamber, which is more energy-saving and environmentally friendly; the rotary shaft 27 and the second drive motor 28 are also included, the rotary shaft 27 is rotatably arranged in the feed hopper 20, the second drive motor 28 is fixedly arranged at the top of the feed hopper 20, the output end of the second drive motor 28 is transmission-connected to the top of the rotary shaft 27, and a plurality of groups of evenly distributed stirring blades 29 are arranged on the rotary shaft 27;By starting the second drive motor 28, the second drive motor 28 drives the rotating shaft 27 to rotate, and the rotating shaft 27 drives the stirring blade 29 to rotate, so that the stirring blade 29 fully stirs the polymer denitrification agent in the feed hopper 20, so that it is fully in contact with the wall of the feed hopper 20, so that the polymer denitrification agent is fully dried and preheated; the bottom ends of the multiple groups of reaction cylinders 11 are all provided with bell mouths 30; through the setting of the bell mouths 30, the flue gas can enter the reaction cylinder 11 more smoothly; it also includes a ventilation pipe 31, the input end of the ventilation pipe 31 is connected to the storage chamber; through the ventilation pipe The setting of 31 can keep the air pressure in the storage box 6 balanced, so that the venturi jet pump 5 can smoothly suck out the polymer denitrification agent in the storage box 6; a dust filter element 32 is set in the ventilation pipe 31; the setting of the dust filter element 32 can effectively prevent external dust from entering the storage chamber; multiple groups of reaction cylinders 11 are located at the 800℃-900℃ temperature window of the working chamber; the reaction cylinders 11 are set at the 800℃-900℃ temperature window of the working chamber, so that the nitrogen compounds in the flue gas react with the polymer denitrification agent at the most suitable temperature, so that the reaction is more complete. ;

[0026] When in use, the blower 4 is started to blow the smoke in the smoke exhaust pipe 2 into the venturi jet pump 5, so that negative pressure is generated in the venturi jet pump 5, and the polymer denitrification agent in the storage box 6 is sucked in through the bottom input end of the venturi jet pump 5, and enters into the gas equalizing pipe group 9 from the left output end of the venturi jet pump 5 and the second connecting pipe 8, and is sprayed into the reaction tube 11 through multiple groups of spray pipes 14. At this time, the polymer denitrification agent meets the smoke in the working chamber in the reaction tube 11, and the spiral guide sheet 15 makes the smoke and the polymer denitrification agent spirally rise in the reaction tube 11, which prolongs the contact time between the smoke and the polymer denitrification agent, and in the spiral rising process, the smoke and the polymer denitrification agent fully react to carry out denitration treatment, and a small part of the smoke and the polymer denitrification agent are removed. The unreacted high molecular denitrification agent flue gas enters the exhaust pipe 2. At this time, under the action of the blower 4, a small part of the unreacted high molecular denitrification agent flows back to the working chamber through the first connecting pipe 7, the venturi jet pump 5 and the second connecting pipe 8 to undergo a secondary reaction. At the same time, a small part of the unreacted nitride in the flue gas undergoes a secondary reaction, so that the high molecular denitrification agent can be fully contacted with the exhaust gas, and the flue gas and the high molecular denitrification agent can fully react, thereby reducing the waste of the high molecular denitrification agent and achieving a better denitrification effect. By placing the high molecular denitrification agent into the feed hopper 20, connecting the first drive motor 19 to the mains and starting it, so that the first drive motor 19 drives the reducer 18 to rotate, and the reducer 18 drives the screw conveying rod 17 to rotate, so that the high molecular denitrification agent in the feed hopper 20 The agent enters the storage chamber through the spiral feeding barrel 16, and the speed of the spiral conveying rod 17 is changed by adjusting the speed of the reducer 18, so that the amount of polymer denitrification entering the storage box 6 is changed, and the suction amount of the venturi jet pump 5 is changed, so as to adjust the amount of polymer denitrification entering the working chamber, so that the polymer denitrification agent is replenished as the content of nitrogen-containing compounds in the flue gas changes, and the waste of excessive polymer denitrification agent is avoided; by starting the suction fan 23, the suction fan 23 sucks the high-temperature flue gas in the flue gas duct into the spiral heating tube 24, so that the spiral heating tube 24 heats the feed hopper 20, preheats and dries the polymer denitrification agent, and evaporates the water in the polymer denitrification agent. At the same time, preheating is performed to reduce the high molecular weight of the polymer denitrification agent. The entry of the sub-denitrifier into the working chamber has a great impact on the temperature in the working chamber, which is more energy-saving and environmentally friendly; by starting the second drive motor 28, the second drive motor 28 drives the rotating shaft 27 to rotate, and the rotating shaft 27 drives the stirring blade 29 to rotate, so that the stirring blade 29 fully stirs the polymer denitrifier in the feed hopper 20, so that it is fully in contact with the wall of the feed hopper 20, so that the polymer denitrifier is fully dried and preheated; through the setting of the bell mouth 30, the flue gas can enter the reaction cylinder 11 more smoothly; through the setting of the ventilation pipe 31, the air pressure in the storage box 6 can be kept balanced, so that the Venturi jet pump 5 can smoothly suck out the polymer denitrifier in the storage box 6; through the setting of the dustproof filter element 32, external dust can be effectively prevented from entering the storage chamber;The reaction tube 11 is set at the temperature window of 800℃-900℃ in the working chamber, so that the nitrogen compounds in the flue gas react with the polymer denitrification agent at the most suitable temperature, making the reaction more complete. ;

[0027] In a PNCR denitration treatment device of the present invention, the blower, the suction fan, the first drive motor and the second drive motor are all purchased, and the blower, the suction fan, the first drive motor and the second drive motor are electrically connected through the instruction manual purchased together.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PNCR denitration treatment device, characterized in that: The invention comprises a boiler furnace (1), a smoke exhaust pipe (2), a mounting platform (3), a blower (4), a Venturi jet pump (5), a material storage box (6), a first connecting pipe (7), a second connecting pipe (8), a gas equalizing pipe group (9), a mounting plate (10), a plurality of reaction tubes (11) and a mounting frame (12), wherein a working chamber is arranged in the boiler furnace (1), the smoke exhaust pipe (2) is arranged at the top end of the boiler furnace (1), the input end of the boiler furnace (1) is communicated with the working chamber, and the mounting platform (3) is connected to the working chamber. ) is fixedly arranged at the right end of the boiler furnace (1), the storage box (6) and the mounting frame (12) are both fixedly arranged at the top left part of the mounting platform (3), the blower (4) is fixedly arranged on the mounting frame (12), the input end of the first connecting pipe (7) is connected to the inside of the smoke exhaust pipe (2), the output end of the first connecting pipe (7) is connected to the input end of the blower (4), the Venturi jet pump (5) is fixedly arranged at the top of the storage box (6), and the storage box (6) is provided with a storage cavity The output end of the blower (4) is connected to the right input end of the Venturi jet pump (5), the bottom input end of the Venturi jet pump (5) extends into the material storage chamber, the output end of the Venturi jet pump (5) is connected to the input end of the second connecting pipe (8), the gas equalizing pipe group (9) and the mounting plate (10) are fixedly arranged in the working chamber, the mounting plate (10) is located on the upper part of the gas equalizing pipe group (9), the output end of the second connecting pipe (8) passes through the boiler furnace from the right end of the boiler furnace (1) The right end wall of the gas equalizing tube group (1) is connected to the input end of the gas equalizing tube group (9), and the mounting plate (10) is provided with a plurality of evenly distributed mounting through holes (13). The bottom ends of the plurality of reaction tubes (11) respectively pass through the plurality of mounting through holes (13) and are fixedly connected to the mounting plate (10). The output end of the gas equalizing tube group (9) is provided with a plurality of evenly distributed injection pipes (14). The injection pipes (14) respectively extend into the bottom of the reaction tubes (11), and the plurality of reaction tubes (11) are each provided with a spiral guide sheet (15).

2. A PNCR denitration treatment device according to claim 1, characterized in that: The device further comprises a screw feeding cylinder (16), a screw conveying rod (17), a reducer (18), a first drive motor (19) and a feed hopper (20). The feed hopper (20) is provided with a containing cavity. The screw feeding cylinder (16), the reducer (18) and the first drive motor (19) are all fixedly arranged at the top right part of the mounting platform (3). The screw conveying rod (17) is rotatably arranged in the screw feeding cylinder (16). The output end of the first drive motor (19) is connected to the output end of the reducer (18). The input end is transmission-connected, the output end of the reducer (18) is connected to the output end of the spiral conveying rod (17), the bottom end of the feed hopper (20) is provided with a discharge pipe (21), the input end of the discharge pipe (21) extends into the containing cavity, the output end of the discharge pipe (21) extends into the spiral conveying cylinder (16), the output end of the spiral conveying cylinder (16) extends into the storage cavity, and the top end of the feed hopper (20) is provided with a feed port (22), and a blocking cover is provided on the feed port (22).

3. A PNCR denitration treatment device according to claim 2, characterized in that: It also includes a suction fan (23), a spiral heating tube (24), an air inlet pipe (25) and an air outlet pipe (26); the spiral heating tube (24) is spirally wound on the outer wall of the feed hopper (20); the input end of the air inlet pipe (25) is connected to the smoke exhaust pipe (2); the output end of the air inlet pipe (25) is connected to the input end of the suction fan (23); the output end of the suction fan (23) is connected to the input end of the spiral heating tube (24); the output end of the spiral heating tube (24) is connected to the input end of the air outlet pipe (26); and the output end of the air outlet pipe (26) is connected to the smoke exhaust pipe (2).

4. A PNCR denitration treatment device according to claim 3, characterized in that: The invention also comprises a rotating shaft (27) and a second driving motor (28), wherein the rotating shaft (27) is rotatably arranged in the feed hopper (20), the second driving motor (28) is fixedly arranged at the top end of the feed hopper (20), the output end of the second driving motor (28) is drivingly connected to the top end of the rotating shaft (27), and the rotating shaft (27) is provided with a plurality of groups of evenly distributed stirring blades (29).

5. A PNCR denitration treatment device according to claim 4, characterized in that: The bottom ends of the multiple groups of reaction cylinders (11) are all provided with bell mouths (30).

6. A PNCR denitration treatment device according to claim 5, characterized in that: It also comprises a ventilation pipe (31), the input end of which is in communication with the material storage chamber.

7. A PNCR denitration treatment device according to claim 6, characterized in that: A dustproof filter element (32) is arranged in the ventilation pipe (31).

8. A PNCR denitration treatment device according to claim 7, characterized in that: The multiple groups of reaction cylinders (11) are located at a temperature window of 800° C.-900° C. in the working chamber.

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