CN115432715A - Device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating - Google Patents
Device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating Download PDFInfo
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- CN115432715A CN115432715A CN202210839426.0A CN202210839426A CN115432715A CN 115432715 A CN115432715 A CN 115432715A CN 202210839426 A CN202210839426 A CN 202210839426A CN 115432715 A CN115432715 A CN 115432715A
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- flue gas
- air
- pyrolyzer
- filter screen
- ammonia
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 80
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000003546 flue gas Substances 0.000 title claims abstract description 62
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 29
- 239000004202 carbamide Substances 0.000 title claims abstract description 29
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 28
- 238000005245 sintering Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims abstract description 77
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 21
- 241000220317 Rosa Species 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 28
- 238000007599 discharging Methods 0.000 abstract description 14
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 16
- 239000000779 smoke Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- PPBAJDRXASKAGH-UHFFFAOYSA-N azane;urea Chemical compound N.NC(N)=O PPBAJDRXASKAGH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/08—Preparation of ammonia from nitrogenous organic substances
- C01C1/086—Preparation of ammonia from nitrogenous organic substances from urea
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a device for preparing ammonia by urea pyrolysis based on sintering flue gas heat compensation, which relates to the field of ammonia preparation and comprises a bottom plate, wherein a pyrolyzer, a preparation box, a filter box, a combustion chamber, a mixing box and a flue gas conveying pipe are respectively arranged on the bottom plate, a filter screen is arranged in the pyrolyzer, a rotating assembly and a flow distribution assembly are respectively arranged in the pyrolyzer, and the rotating assembly comprises a motor, a material collecting plate, a material guide plate and a material discharge port. According to the invention, the rotating assembly is arranged, when impurities on the filter screen need to be cleaned, a user can start the motor, the motor drives the driving shaft to rotate when working, so as to drive the rotating plate to rotate, the impurities attached to the surface of the filter screen can be cleaned off when the rotating plate continuously rotates, so that the cleaning efficiency of the filter screen can be improved, the filter screen is prevented from being blocked by the impurities, the ammonia gas can be continuously filtered by the subsequent filter screen, the impurities fall onto the material collecting plate and fall onto the material guide plate through the material dropping opening, and then the impurities slide into the material discharging opening through the material guide plate, so that the impurities can be discharged subsequently.
Description
Technical Field
The invention relates to the field of ammonia production, in particular to a device for producing ammonia by urea pyrolysis based on sintering flue gas heat compensation.
Background
Waste gas of a sintering process is one of main air pollution emission sources in the steel industry, liquid ammonia or ammonia water for ammonia production in a conventional denitration process flow forms a dangerous source, along with increasing emphasis of the country on safety production, and as urea does not belong to a dangerous product and is convenient to transport and store, the urea ammonia production SCR denitration process is gradually popularized and applied to treatment of flue gas pollutants in the non-electric industries such as steel, cement and the like, wherein an electric heating or steam heating is generally adopted as a heat source in a urea pyrolysis ammonia production mode, high-quality energy is consumed, and the operation cost is high, so that sintering flue gas can be used as the heat source for ammonia production in part of ammonia production processes, so that the flue gas is fully utilized, and waste of the heat source is avoided.
According to the device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating disclosed by the Chinese patent with the publication number of CN214346328U, the safety of the system is improved by using urea pyrolysis to replace liquid ammonia and ammonia water to evaporate and prepare ammonia, the operation cost is reduced by using high-temperature flue gas generated after combustion as a heat source for urea pyrolysis, and the high-temperature flue gas and ammonia gas are mixed and then injected into a denitration flue, so that the uniformity of temperature distribution and ammonia distribution is ensured.
In view of the above disclosure, the inventor believes that the mixed gas of ammonia gas and flue gas can be filtered through the filter screen, and the filter screen filters for a long time to cause more impurities to adhere to the surface of the filter screen, and the impurities are difficult to be cleaned in time, causing the impurities to adhere to the surface of the filter screen all the time and further causing blockage to the filter screen, thereby affecting the ventilation and filtration efficiency of the subsequent filter screen.
Disclosure of Invention
Based on this, the invention aims to provide a device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating, so as to solve the technical problem that impurities attached to the surface of a filter screen are difficult to clean in time.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a device based on sintering flue gas concurrent heating carries out urea pyrolysis system ammonia, comprising a base plate, be equipped with pyrolysis apparatus, preparation case, rose box, combustion chamber, mixing box and flue gas conveyer pipe on the bottom plate respectively, the internally mounted of pyrolysis apparatus has the filter screen, the inside of pyrolysis apparatus is equipped with rotating assembly and reposition of redundant personnel subassembly respectively, rotating assembly includes motor, collection flitch, stock guide and bin outlet, the output of motor is connected with and extends to the inside drive shaft of pyrolysis apparatus, install the rotor plate in the drive shaft, install the mixing box between pyrolysis apparatus and the rose box, be equipped with the first air duct that extends to the rose box inside on the mixing box.
Through adopting above-mentioned technical scheme, the filter screen can filter the mist of flue gas and ammonia, and the motor during operation can drive the drive shaft simultaneously and rotate, and then drives and change the board and rotate.
Furthermore, the shunting assembly comprises a shunting cover, an air guide cavity is formed in the shunting cover, an air guide opening is formed in the inner wall of the shunting cover, and an air guide plate is mounted on the shunting cover.
By adopting the technical scheme, part of the smoke can enter the shunting cover through the first air duct and flow in the air duct cavity.
Furthermore, the number of the air guide plates is the same as that of the air guide ports, and the air outlet of the first air guide pipe is positioned inside the flow dividing cover.
Through adopting above-mentioned technical scheme, the flue gas can be discharged through leading the gas port, and the air guide plate can carry out the water conservancy diversion to the flue gas simultaneously.
Furthermore, a blanking port is formed in the material collecting plate and is located right above the material guide plate.
Through adopting above-mentioned technical scheme to impurity slides to blanking mouth department through the material collecting plate, and falls into to the stock guide through the blanking mouth on, so that follow-up discharges impurity.
Furthermore, the top of the rotating plate is in contact with a filter screen, and the filter screen is semicircular.
Through adopting above-mentioned technical scheme, can clear up the adnexed impurity in filter screen surface when changeing the board and continuously rotating, and then can improve the cleaning efficiency to the filter screen, prevent that impurity from blockking up the filter screen.
Furthermore, a first air inlet pipe extending into the air guide cavity is arranged on the flue gas conveying pipe, a fan is installed on one side of the combustion chamber, the air inlet end of the fan is connected with the flue gas conveying pipe, and the air outlet end of the fan is connected with an air conveying pipe extending into the combustion chamber.
By adopting the technical scheme, the fan can draw the smoke in the smoke conveying pipe during working and convey the smoke to the inside of the combustion chamber through the gas conveying pipe, so that the combustion-supporting effect is achieved.
Furthermore, a vent pipe is connected between the combustion chamber and the temperature regulator, a third air duct is installed on the temperature regulator, and one end of the third air duct extends into the pyrolysis device.
Through adopting above-mentioned technical scheme, the inside flue gas of combustion chamber can enter into the inside of thermoregulator through the trachea, and the part flue gas in the flue gas conveying pipe can enter into the thermoregulator inside through the third trachea simultaneously.
Furthermore, a material pumping pump is installed on one side of the pyrolyzer, a material pumping pipe extending to the interior of the preparation box is connected to the material feeding end of the material pumping pump, and a material conveying pipe extending to the interior of the pyrolyzer is connected to the material discharging end of the material pumping pump.
By adopting the technical scheme, the material pumping pump can pump the urea in the preparation box through the material pumping pipe, and the urea enters the pyrolyzer through the material conveying pipe.
Furthermore, an air pump is installed on one side of the mixing box, an air inlet end of the air pump is connected with an air pumping pipe extending to the interior of the pyrolyzer, and an air outlet end of the air pump is connected with an air feeding pipe extending to the interior of the mixing box.
Through adopting above-mentioned technical scheme, the air extractor work can make the inside ammonia of exhaust tube extraction pyrolyzer, and the ammonia then enters into inside the mixing box through the blast pipe to mix with the flue gas.
In summary, the invention mainly has the following beneficial effects:
1. according to the invention, the rotating assembly is arranged, when impurities on the filter screen need to be cleaned, a user can start the motor, the motor drives the driving shaft to rotate when working, so as to drive the rotating plate to rotate, the impurities attached to the surface of the filter screen can be cleaned off when the rotating plate continuously rotates, so that the cleaning efficiency of the filter screen can be improved, the filter screen is prevented from being blocked by the impurities, the subsequent filter screen can continuously filter ammonia gas, the impurities fall onto the material collecting plate and fall onto the material guide plate through the material dropping opening, and then slide into the material discharging opening through the material guide plate, so that the impurities can be discharged subsequently;
2. according to the invention, through the arrangement of the flow dividing assembly, part of the flue gas can enter the flow dividing cover through the first gas guide tube, flows in the gas guide cavity, is discharged through the gas guide port and is mixed with the ammonia gas, so that the ammonia gas can be heated, the gas guide plate can guide the flow of the flue gas, the flue gas can fully heat the ammonia gas, and the ammonia gas can only be discharged through the gap on the flow dividing cover, so that the time of the ammonia gas in the flow dividing cover is prolonged, and the heating effect on the ammonia gas is further improved.
Drawings
FIG. 1 is a schematic view of an overall front cross-sectional structure of the present invention;
FIG. 2 is a schematic side sectional view of a portion of the filter box of the present invention;
FIG. 3 is an enlarged view of the invention at A in FIG. 1;
FIG. 4 is a schematic perspective partial structure view of a flow dividing cover according to the present invention;
FIG. 5 is a schematic view of a three-dimensional partial structure of the filter screen of the present invention;
fig. 6 is a schematic perspective partial structure view of the aggregate plate of the present invention.
In the figure: 1. a base plate; 2. a pyrolyzer; 3. preparing a box; 4. a thermostat; 5. a combustion chamber; 6. a mixing box; 7. a filter box; 8. a rotating assembly; 801. a motor; 802. rotating the plate; 803. a drive shaft; 804. a material collecting plate; 805. a blanking port; 806. a stock guide; 807. a discharge outlet; 808. blocking; 9. a flow diversion assembly; 901. a flow distribution cover; 902. a gas conducting cavity; 903. an air guide port; 904. a gas guide plate; 10. filtering with a screen; 11. an exhaust pipe; 12. a first air duct; 13. a first intake pipe; 14. a flue gas conveying pipe; 15. a second air duct; 16. a material pumping pump; 17. a third air duct; 18. a fan; 19. a second intake pipe; 20. a feed pipe; 21. an air extractor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
The utility model provides a device based on sintering flue gas concurrent heating carries out urea pyrolysis system ammonia, as figure 1, figure 2, figure 3, figure 4 and figure 5 are shown, including bottom plate 1, be equipped with pyrolyzer 2 on the bottom plate 1 respectively, preparation case 3, rose box 7, combustion chamber 5, mixing box 6 and flue gas conveyer pipe 14, be equipped with inlet pipe 20 on the preparation case 3, urea can get into to the inside of preparation case 3 through inlet pipe 20, be connected with second intake pipe 19 between thermolator 4 and the flue gas conveyer pipe 14, can make partial flue gas get into to thermolator 4 inside through second intake pipe 19, the internally mounted of pyrolyzer 2 has filter screen 10, filter screen 10 can filter the mist of flue gas and ammonia, pyrolyzer 2's inside is equipped with rotating assembly 8 and reposition of redundant personnel subassembly 9 respectively, install mixing box 6 between pyrolyzer 2 and the rose box 7, be equipped with the first air duct 12 that extends to the inside of rose box 7 on the mixing box 6.
Specifically, the rotating assembly 8 comprises a motor 801, a material collecting plate 804, a material guiding plate 806 and a material discharging port 807, the motor 801 is arranged above the outer surface of the filter box 7, the material discharging port 807 is arranged on the outer surface of the filter box 7, a sealing plug 808 is arranged inside the material discharging port 807, the sealing plug 808 can seal the material discharging port 807 and prevent ammonia gas from being discharged through the material discharging port 807, a pull ring is fixed on one side of the sealing plug 808, meanwhile, a user can pull the sealing plug 808 through the pull ring to enable the sealing plug 808 to be taken out from the material discharging port 807, the output end of the motor 801 is connected with a driving shaft 803 extending into the pyrolyzer 2, a rotating plate 802 is arranged on the driving shaft 803, and the top of the rotating plate 802 is in contact with the filter screen 10, the filter screen 10 is semicircular, the filter screen 10 is located directly above the material collecting plate 804, so that impurities can fall onto the material collecting plate 804, the impurities attached to the surface of the filter screen 10 can be cleaned off when the rotating plate 802 continuously rotates, a baffle is arranged on the material guiding plate 806, one side of the material guiding plate 806 inclines downwards along the direction of the material discharging opening 807, the top of the material guiding plate 806 is smooth, the impurities on the material guiding plate 806 can slide to the material discharging opening 807 through the material guiding plate 806 and are discharged through the material discharging opening 807, a material dropping opening 805 is formed in the material collecting plate 804, so that the impurities can slide to the material dropping opening 805 through the material collecting plate 804 and fall onto the material guiding plate 806 through the material dropping opening 805, and the material dropping opening 805 is located directly above the material guiding plate 806.
Specifically, reposition of redundant personnel subassembly 9 is including reposition of redundant personnel cover 901, reposition of redundant personnel cover 901 is installed in the inside below of rose box 7, the air guide chamber 902 has been seted up to the inside of reposition of redundant personnel cover 901, air guide opening 903 and air guide chamber 902 intercommunication, can make the flue gas enter into to air guide opening 903 inside through air guide chamber 902, air guide opening 903 has been seted up to the inner wall of reposition of redundant personnel cover 901, install air guide plate 904 on the reposition of redundant personnel cover 901, part flue gas can enter into to the inside of reposition of redundant personnel cover 901 through first air duct 12, and flow in air guide chamber 902, the flue gas can be discharged through air guide opening 903, air guide plate 904 can carry out the water conservancy diversion to the flue gas simultaneously.
Referring to fig. 1, 2 and 5, the top of the filtering box 7 is connected with an exhaust pipe 11 so that the filtered ammonia gas can be discharged through the exhaust pipe 11, a first air inlet pipe 13 extending into the air guide chamber 902 is arranged on the flue gas conveying pipe 14, a fan 18 is arranged at one side of the combustion chamber 5, the air inlet end of the fan 18 is connected with the flue gas conveying pipe 14, the air outlet end of the fan 18 is connected with an air conveying pipe extending into the combustion chamber 5, the fan 18 can draw the flue gas in the flue gas conveying pipe 14 when working and convey the flue gas into the combustion chamber 5 through the air conveying pipe so as to play a combustion supporting role, an air pipe is connected between the combustion chamber 5 and the temperature regulator 4, a third air guide pipe 17 is arranged on the temperature regulator 4, one end of the third air guide pipe 17 extends into the interior of the pyrolysis regulator 2, the flue gas in the combustion chamber 5 can enter the interior of the temperature regulator 4 through the air guide pipe, meanwhile, part of the flue gas in the flue gas conveying pipe 14 can enter the temperature regulator 4 through a third gas guide pipe 17, a second gas guide pipe 15 is connected between the third gas guide pipe 17 and the mixing box 6, a material pumping pump 16 is installed on one side of the pyrolyzer 2, a material pumping pipe extending to the inside of the preparation box 3 is connected to the material feeding end of the material pumping pump 16, a material conveying pipe extending to the inside of the pyrolyzer 2 is connected to the material discharging end of the material pumping pump 16, an air pump 21 is installed on one side of the mixing box 6, a gas inlet end of the air pump 21 is connected to a gas pumping pipe extending to the inside of the pyrolyzer 2, and a gas outlet end of the air pump 21 is connected to a gas feeding pipe extending to the inside of the mixing box 6.
The implementation principle of the embodiment is as follows: firstly, a user installs the device and connects a power supply, then adds urea into the preparation box 3 through the feeding pipe 20, adds soft water to dissolve the urea, simultaneously smoke can enter through the smoke conveying pipe 14, at the moment, the fan 18 can be started, the fan 18 works to extract the smoke in the smoke conveying pipe 14, and the smoke is conveyed into the combustion chamber 5 through the gas conveying pipe, so as to achieve the combustion-supporting effect;
the flue gas in the combustion chamber 5 enters the interior of the temperature regulator 4 through the vent pipe, enters the interior of the pyrolyzer 2 through the third gas guide pipe 17 after being regulated in temperature by the temperature regulator 4, meanwhile, a user starts the material pumping pump 16, the material pumping pump 16 works to enable the material pumping pipe to pump the urea in the preparation box 3, and the urea enters the interior of the pyrolyzer 2 through the material conveying pipe, so that the ammonia gas can be prepared through urea pyrolysis in the pyrolyzer 2;
then starting an air extractor 21, wherein the air extractor 21 works to enable an air extracting pipe to extract ammonia gas in the pyrolyzer 2, the ammonia gas enters the mixing box 6 through an air feeding pipe, and meanwhile, part of flue gas enters the mixing box 6 through a second air guide pipe 15 so as to mix the ammonia gas with the flue gas;
the mixed ammonia gas can enter the inside of the filter box 7 through the first air duct 12, and part of the flue gas enters the inside of the flow dividing cover 901 through the first air duct 12 and flows in the air guide cavity 902, and is discharged through the air guide opening 903 and mixed with the ammonia gas, so that the ammonia gas can be heated, the air guide plate 904 can guide the flow of the flue gas, and the heated ammonia gas flows upwards, enters the exhaust pipe 11 after being filtered by the filter screen 10, and is discharged through the exhaust pipe 11;
when the impurity on the filter screen 10 needs to be cleared up, the user can start the motor 801, the motor 801 drives the driving shaft 803 to rotate during operation, and then drives the rotating plate 802 to rotate, the impurity attached to the surface of the filter screen 10 can be cleared up when the rotating plate 802 continuously rotates, the filter screen 10 is prevented from being blocked by the impurity, and the impurity then drops onto the material collecting plate 804, and falls into the material guide plate 806 through the material dropping opening 805, and the material guide plate 806 slides to the material discharging opening 807, so that the impurity can be discharged subsequently.
Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.
Claims (9)
1. The utility model provides a device based on sintering flue gas concurrent heating carries out urea pyrolysis system ammonia, includes bottom plate (1), its characterized in that: be equipped with pyrolyzer (2), preparation case (3), rose box (7), combustion chamber (5), mixing box (6) and flue gas conveyer pipe (14) on bottom plate (1) respectively, the internally mounted of pyrolyzer (2) has filter screen (10), the inside of pyrolyzer (2) is equipped with rotating assembly (8) and reposition of redundant personnel subassembly (9) respectively, rotating assembly (8) are including motor (801), aggregate board (804), stock guide (806) and bin outlet (807), the output of motor (801) is connected with and extends to pyrolyzer (2) inside drive shaft (803), install rotor plate (802) on drive shaft (803), install mixing box (6) between pyrolyzer (2) and rose box (7), be equipped with on mixing box (6) and extend to the inside first air duct (12) of rose box (7).
2. The device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating according to claim 1, wherein: the flow dividing assembly (9) comprises a flow dividing cover (901), a gas guide cavity (902) is formed in the flow dividing cover (901), a gas guide opening (903) is formed in the inner wall of the flow dividing cover (901), and a gas guide plate (904) is mounted on the flow dividing cover (901).
3. The device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating according to claim 2, wherein: the number of the air guide plates (904) is the same as that of the air guide ports (903), and the air outlet of the first air guide pipe (12) is positioned inside the flow dividing cover (901).
4. The device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating according to claim 1, wherein: a blanking port (805) is formed in the material collecting plate (804), and the blanking port (805) is located right above the material guide plate (806).
5. The device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating according to claim 1, wherein: the top of the rotating plate (802) is in contact with a filter screen (10), and the filter screen (10) is semicircular.
6. The device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating according to claim 1, wherein: the air-conditioning device is characterized in that a first air inlet pipe (13) extending to the inside of the air guide cavity (902) is arranged on the flue gas conveying pipe (14), a fan (18) is installed on one side of the combustion chamber (5), the air inlet end of the fan (18) is connected with the flue gas conveying pipe (14), and the air outlet end of the fan (18) is connected with an air conveying pipe extending to the inside of the combustion chamber (5).
7. The device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating according to claim 1, wherein: be connected with the breather pipe between combustion chamber (5) and thermoregulator (4), install third air duct (17) on thermoregulator (4), just the one end of third air duct (17) extends to the inside of pyrolyzer (2).
8. The device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating according to claim 1, wherein: an extracting pump (16) is installed on one side of the pyrolyzer (2), a material extracting pipe extending to the interior of the preparation box (3) is connected to the material inlet end of the extracting pump (16), and a material conveying pipe extending to the interior of the pyrolyzer (2) is connected to the material outlet end of the extracting pump (16).
9. The device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating according to claim 1, wherein: air extractor (21) is installed to one side of mixing box (6), the inlet end of air extractor (21) is connected with the exhaust tube that extends to the inside of pyrolyzer (2), the end of giving vent to anger of air extractor (21) is connected with the air feed pipe that extends to the inside of mixing box (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210839426.0A CN115432715A (en) | 2022-07-18 | 2022-07-18 | Device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210839426.0A CN115432715A (en) | 2022-07-18 | 2022-07-18 | Device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating |
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| CN115432715A true CN115432715A (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210839426.0A Pending CN115432715A (en) | 2022-07-18 | 2022-07-18 | Device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671517A (en) * | 2011-03-12 | 2012-09-19 | 江苏一同环保工程技术有限公司 | Device for performing urea pyrolysis by utilizing smoke thermal enthalpy |
| CN112619560A (en) * | 2020-10-23 | 2021-04-09 | 苏州西热节能环保技术有限公司 | Device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating |
| CN213995446U (en) * | 2020-10-22 | 2021-08-20 | 陈玲 | SCR denitrification facility of aqueous ammonia |
| CN113426296A (en) * | 2021-07-19 | 2021-09-24 | 苏州西热节能环保技术有限公司 | Energy-saving urea hydrolysis ammonia preparation denitrification facility based on combustion engine SCR denitration |
-
2022
- 2022-07-18 CN CN202210839426.0A patent/CN115432715A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671517A (en) * | 2011-03-12 | 2012-09-19 | 江苏一同环保工程技术有限公司 | Device for performing urea pyrolysis by utilizing smoke thermal enthalpy |
| CN213995446U (en) * | 2020-10-22 | 2021-08-20 | 陈玲 | SCR denitrification facility of aqueous ammonia |
| CN112619560A (en) * | 2020-10-23 | 2021-04-09 | 苏州西热节能环保技术有限公司 | Device for preparing ammonia by urea pyrolysis based on sintering flue gas concurrent heating |
| CN113426296A (en) * | 2021-07-19 | 2021-09-24 | 苏州西热节能环保技术有限公司 | Energy-saving urea hydrolysis ammonia preparation denitrification facility based on combustion engine SCR denitration |
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