CN213377702U - Lump coal gas making device for synthetic ammonia - Google Patents
Lump coal gas making device for synthetic ammonia Download PDFInfo
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- CN213377702U CN213377702U CN202021426077.2U CN202021426077U CN213377702U CN 213377702 U CN213377702 U CN 213377702U CN 202021426077 U CN202021426077 U CN 202021426077U CN 213377702 U CN213377702 U CN 213377702U
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Abstract
The utility model provides a lump coal gas making device for synthetic ammonia, which comprises a furnace body, wherein the furnace body is provided with a coal feed inlet, the coal feed inlet is communicated with a screening unit, the screening unit comprises a box body, a feed channel arranged on the box body, a screening component arranged in the box body and positioned below the feed channel, and at least one blanking channel arranged on the box body and matched with the screening component for use; the screening subassembly includes two at least screen meshes that upper and lower wall established and connects the connecting axle of a plurality of screen meshes, and wherein the mesh aperture of a plurality of screen meshes is from last to degressive setting down in proper order, the connecting axle passes through the drive assembly drive and rotates, and the connecting axle rotates and drives a plurality of screen meshes and rotate and screen the lump coal. The utility model discloses the gas making device that sets up is matched with lump coal pretreatment mechanism, can screen the lump coal, screens out the unqualified lump coal of size, ensures that the lump coal particle diameter of entering the stove body is suitable, ensures that the complete combustion of lump coal is complete with the system gas, and the raw materials is not wasted.
Description
Technical Field
The utility model relates to the technical field of synthetic ammonia, in particular to a lump coal gas making device for synthetic ammonia.
Background
The synthetic ammonia refers to ammonia directly synthesized by nitrogen and hydrogen under high temperature and high pressure and in the presence of a catalyst, and is a basic inorganic chemical process. In the modern chemical industry, ammonia is the main raw material for the fertilizer industry and for basic organic chemicals.
In the production process of synthetic ammonia, a gas making process is required, namely raw material coal (coal powder) is made into a coal rod, the coal rod is added into a gas making furnace, and semi-water gas is prepared by taking air and steam as gasifying agents (gas making process).
Among the prior art, the coal raw materials that adopts in the gas making stove are mostly the coal bar (the coal ball) that the buggy was made, and the coal is made after coal bar (the coal ball), there is the process of drying, in order to ensure that the gas making stove goes into stove moulded coal water content strict control at the index range, so the coal bar that synthetic ammonia in-process used need carry out drying process, and the coal bar is at the in-process that the stoving kiln was dried, produce a large amount of poisonous and harmful gas, it is great to environmental pollution to dry the dust simultaneously, the enterprise must form a complete set SOx/NOx control and dust recovery unit. Meanwhile, in the gas making process of the coal rod, the semi-water gas has high dust content, the amount of deposited coal ash in the gas washing tower is large, organic impurities such as coal tar and the like in the gas are more, the sewage components are complex, the treatment difficulty is high, and the comprehensive sewage treatment cost is increased.
In order to solve the pollution problem caused by the coal dust, the technical personnel consider to use lump coal raw materials to replace coal rod raw materials for gas making. Steam pressure and oxygenation time are designed through a set of combustion control program in the gas making furnace, the proper granularity of the lump coal is ensured, the burning of the lump coal approaches to complete burning and gas making, and fuel is not wasted; meanwhile, the lump coal serving as a raw material can prevent coal dust which is small in particle size and does not react yet from being blown away by the semi-water gas, so that the dust content in the water gas is reduced; and the lump coal has higher calorific value than the coal rod, and because the caking agent and the coal type with the first calorific value are adulterated when the coal rod is manufactured, the lump coal with the same tonnage generates more coal gas than the coal rod, thereby reducing the coal consumption.
The use of lump coal instead of coal rods for gas generation requires strict control of the particle size of the lump coal entering the gas generating furnace to ensure efficient combustion of the lump coal. Because the coal rod is mostly adopted for gas making in the prior art, the gas making furnace in the prior art does not have a corresponding lump coal screening device, so that a gas making device capable of screening lump coal raw materials is urgently needed.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists among the prior art, the utility model provides a synthetic ammonia is with lump coal gas making device has solved among the prior art problem that synthetic ammonia is with lump coal gas making device can not carry out the screening of lump coal raw materials.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the lump coal gas-making device for the synthetic ammonia comprises a furnace body, wherein the furnace body is provided with a coal feeding hole, the coal feeding hole is communicated with a lump coal pretreatment mechanism, the lump coal pretreatment mechanism comprises a screening unit and a storage unit which are communicated, and the storage unit is communicated with the coal feeding hole;
the screening unit comprises a box body, a feeding channel arranged on the box body, a screening assembly arranged below the feeding channel and arranged in the box body, and at least one blanking channel arranged on the box body and matched with the screening assembly for use;
the screening component comprises at least two screens arranged on an upper spacing layer and a lower spacing layer and a connecting shaft for connecting the screens, wherein the mesh apertures of the screens are gradually reduced from top to bottom,
the connecting shaft is driven to rotate through the driving assembly, the connecting shaft rotates to drive the plurality of screen meshes to rotate to screen lump coal, and the lump coal with qualified particle size is guided into the storage unit through the blanking channel.
The principle of the utility model is as follows: the lump coal (edulcoration) through the preliminary working is transported to box feedstock channel, drops to the screening subassembly from feedstock channel on, and the connecting axle drives a plurality of screen cloth and rotates under drive assembly's effect, and the screen cloth rotates and to be sieved the processing to the lump coal that drops to on the screen cloth, and the qualified lump coal of particle diameter keeps in through the leading-in storage unit of unloading passageway, gets into the stove body through the storage unit at last, burns with the mist of the leading-in steam of stove body air and makes gas.
Compared with the prior art, the utility model discloses following beneficial effect has: the use of lump coal can reduce the pollution problem that brings in the coal stick use, and the lump coal raw materials of suitable particle diameter can make energy saving and emission reduction's effect reach the optimum, for making energy saving and emission reduction effect optimization, the utility model discloses the gas making device that sets up is equipped with the lump coal pretreatment mechanism that the cooperation was used, and the screening unit of lump coal pretreatment mechanism can filter the lump coal, screens out the unqualified lump coal of size, and the lump coal particle diameter of guaranteeing to enter the stove body is suitable, ensures that the complete combustion and the system gas of lump coal are complete, and the raw materials is not wasted.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the screening unit of the present invention;
FIG. 3 is a schematic view of the structure of the material storage unit of the present invention;
FIG. 4 is a schematic structural view of the kick-off lever of the present invention;
fig. 5 is a cross-sectional view of the central shaft, the rolling rod and the arc baffle of the present invention.
In the figure: 1. rotating the motor; 2. a connecting shaft; 3. a worm section; 4. a worm gear; 5. a box body; 6. a material poking rod; 7. a blanking channel; 8. a discharge passage; 9. a third screen; 10. a second screen; 11. enclosing plates; 12. an arc-shaped baffle plate; 13. a first screen; 14. a rolling roller; 15. a central shaft; 16. a support frame; 17. a feed channel; 18. a storage bin; 19. a material guide channel; 20. a furnace body; 21. a stirring blade; 22. a first bevel gear; 23. a second bevel gear; 24. a helical feeding blade; 25. a first mounting shaft; 26. mounting a plate; 27. a third bevel gear; 28. a fourth bevel gear; 29. a second mounting shaft; 30. a support bar; 31. a fifth bevel gear; 32. a drive motor; 33. a sixth bevel gear; 34. a stirring shaft; 35. a feed shaft; 36. a discharge channel; 61. a rod body; 62. rake teeth; 191. an electromagnetic valve.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.
As shown in FIG. 1, the embodiment of the utility model provides a synthetic ammonia is with lump coal gasification device is proposed, including stove body 20, the utility model discloses the stove body 20 that sets up is prior art, and its concrete structure can refer to the structure that the model is UGI's coal gasifier with the use principle, so the utility model discloses do not give unnecessary details to the structure and the use principle of stove body 20. For the feeding that makes things convenient for stove body 20 the 20 upper ends of stove body are equipped with the coal feed inlet, and the lump coal for ensureing to enter stove body 20 is required particle diameter scope the coal feed inlet intercommunication has lump coal preliminary treatment mechanism, lump coal preliminary treatment mechanism is including the screening unit that communicates with each other the setting and the storage unit that is used for keeping in the qualified lump coal of particle diameter, and wherein storage unit communicates with each other the setting with the coal feed inlet.
As shown in fig. 2, the screening unit includes a box 5, a feeding channel 17 disposed on the box 5, a screening component disposed in the box 5 below the feeding channel 17, and at least one blanking channel 7 disposed on the box 5 and used in cooperation with the screening component; the screening assembly comprises at least two screens arranged at an upper spacing layer and a lower spacing layer and a connecting shaft 2 for connecting the screens, wherein the mesh apertures of the screens are sequentially and progressively reduced from top to bottom; the particle size of the lump coal selected in the production process is usually within a particle size range (such as phi a-b), so at least two screens are needed during screening, and the three screens are arranged in the utility model, and for the convenience of distinguishing, according to the installation positions from top to bottom, the three screens are respectively a first screen 13, a second screen 10 and a third screen 9; assuming that the particle size range of the required lump coal is from a to b, the mesh aperture of the first screen 13 is larger than b (is c), the mesh aperture of the second screen 10 is b, the mesh aperture of the third screen 9 is a, and the corresponding blanking channel 7 is arranged on the box body 5 and close to the third screen 9; the three screens are horizontally arranged, and the peripheries of the screens are in contact with the inner wall of the box body 5 or are arranged in a clearance mode. The vertical setting of connecting axle 2 passes through the bearing with 5 top lateral walls of box and rotates and be connected, connecting axle 2 rotates through the drive assembly drive, and connecting axle 2 rotates and drives a plurality of screen cloth and rotate and screen the lump coal, and the leading-in storage unit of qualified particle size's lump coal through unloading passageway 7. In order to facilitate the blanking of lump coal passing through the third screen 9, a discharging channel 8 is further arranged at a position of the box body 5 close to the bottom of the box body, and an inclined plane inclined towards the discharging channel 8 is arranged at the bottom of the box body 5.
The principle of the utility model is as follows: through the lump coal (edulcoration) of just processing transport 5 feed channel 17 of box, drop to the screening subassembly from feed channel 17 on, connecting axle 2 drives three screen cloth and rotates under drive assembly's effect, the screen cloth rotation can be to the lump coal that drops to on the screen cloth processing of sieving, the qualified lump coal of particle diameter keeps in through the leading-in storage unit of unloading passageway 7, gets into furnace body 20 through the storage unit at last, burns with the mist of the leading-in steam of furnace body 20/air and makes gas. The use of lump coal can reduce the pollution problem that brings in the coal stick use, and the lump coal raw materials of suitable particle diameter can make energy saving and emission reduction's effect reach the optimum, for making energy saving and emission reduction effect optimization, the utility model discloses the gas making device that sets up is equipped with the lump coal pretreatment mechanism that the cooperation was used, and the screening unit of lump coal pretreatment mechanism can filter the lump coal, screens out the unqualified lump coal of size, and the lump coal particle diameter of guaranteeing to enter stove body 20 is suitable, ensures that the complete combustion and the system gas of lump coal are complete, and the raw materials is not wasted.
As shown in FIG. 2, the particle size of the lump coal entering the box 5 is larger than b, the lump coal with the particle size larger than b can be crushed to the lump coal with the required particle size range, the utility model discloses be equipped with the crushing assembly who is used for refining the particle size of the lump coal on at least one screen along the direction from last to bottom. Because the utility model discloses set up three screen cloth, and only set up an unloading passageway 7, so need smash the lump coal of the great particle diameter of interception at first screen cloth 13 and second screen cloth 10, consequently the utility model discloses all be equipped with the crushing unit that the cooperation was used on first screen cloth 13 and second screen cloth 10. Specifically, the crushing assembly comprises a central shaft 15 and a rolling roller 14 connected with the central shaft, the rolling roller 14 is axially parallel to the screen, a gap is formed between the outer wall of the rolling roller 14 and the screen (the size of the gap is matched with the aperture of the screen to ensure that lump coal rolled by the rolling roller 14 can pass through the corresponding screen), and one end of the central shaft 15 is rotatably connected with a support frame 16 fixed on the side wall of the box body 5 through a bearing. The other end of the central shaft 15 is rotationally connected with the inner side wall of the box body 5; the central shaft 15 is connected with the connecting shaft 2 through a connecting piece, so that the connecting shaft 2 rotates to drive the central shaft 15 to rotate. The connecting piece includes worm wheel 4 and worm section 3 that the cooperation was used, worm wheel 4 sets up with center pin 15 is coaxial, worm section 3 sets up with connecting axle 2 is coaxial. Connecting axle 2 rotates under drive assembly's effect, connecting axle 2 rotates and drives worm section 3 and rotate, worm section 3 rotates and drives worm wheel 4 and rotates, worm wheel 4 rotates and drives center pin 15 and rotates, center pin 15 rotates and drives roll roller 14 and rotate and roll the lump coal on the screen cloth (because raw materials lump coal water content is few, and be the fragility material, can be broken when rolling, can not roll into the pie, so can adopt the mode that roll roller 14 rolled to smash the lump coal), the lump coal particle diameter after smashing diminishes, the processing of sieving again under the effect of pivoted screen cloth, make unsatisfied lump coal that advances the stove particle diameter satisfy required requirement, improve the rate of utilization of lump coal. And in order to roll the rod and effectively smash the lump coal on first screen cloth 13 (second screen cloth 10), the utility model discloses still be equipped with bounding wall 11 in the periphery of first screen cloth 13 and second screen cloth 10, avoid the lump coal to splash and do not drop to the screen cloth of below from the mesh of first screen cloth 13 (second screen cloth 10).
As shown in fig. 2 and 5, in order to avoid dust accumulation on the pulverizing components disposed on the second screen 10, the utility model discloses still be equipped with the cowl 12 fixed on the inner wall of the box 5 between the first screen 13 and the second screen 10.
As shown in fig. 2 and 4, because the screen cloth is along with connecting axle 2 rotates the lump coal on the in-process screen cloth and is done centrifugal motion, assembles easily and is being close to the peripheral position of screen cloth, piles up for avoiding lump coal transition, the utility model discloses be equipped with the kickoff pole 6 of cooperation use on first screen cloth 13 and second screen cloth 10, should dial the pole 6 and include the body of rod 61 fixed with the 5 inner walls of box and a plurality of rake teeth 62 that set up along body of rod 61 length direction on the body of rod 61, be convenient for dial the material to accumulational lump coal, place lump coal transition and pile up and be close to peripheral position at first screen cloth 13 (second screen cloth 10).
The utility model discloses the drive assembly mainly used drive connecting axle 2 that sets up rotates, so the utility model discloses set up drive assembly includes the rotation motor 1 with 2 couplings of connecting axle. The rotating motor 1 is a servo motor, so that the rotating speed and the frequency of the connecting shaft 2 can be conveniently controlled by the rotating motor 1.
The utility model discloses the storage unit mainly used that the setting will satisfy the condition stores the lump coal, as shown in fig. 3, so the utility model discloses set up the storage unit includes the feed bin 18 that communicates with each other and set up with unloading passageway 7, the bottom slope sets up in the feed bin 18, and the bottom slope lower extreme is connected with the discharging channel 36 that communicates with each other and set up with the coal feed inlet in feed bin 18. In order to avoid the lump coal in the storage bin 18 from being accumulated when the lump coal in the storage bin 18 is led out from the discharging channel 36, the utility model discloses a material accumulation preventing component is arranged in the storage bin 18; prevent that material from piling up subassembly includes that it is connected with feed bin 18 lateral wall rotation's (mixing) shaft 34 and a plurality of stirring vane 21 of setting on (mixing) shaft 34, wherein the one end of (mixing) shaft 34 runs through feed bin 18 lateral wall and is connected with driving motor 32, and this driving motor 32 is servo motor, the automated control of driving motor 32 of being convenient for.
Because the slope of 18 bottoms of feed bin sets up, lump coal assembles to discharging channel 36 along 18 bottoms of feed bin and carries out the unloading under the normal condition, but in order to carry to stove body 20 in the lump coal energy ration that derives from discharging channel 36, the utility model discloses be equipped with spiral feeding subassembly in discharging channel 36, spiral feeding subassembly includes the spiral feeding blade 24 that the winding set up on feeding shaft 35 and the feeding shaft 35 that set up along 36 length direction of discharging channel, wherein, be equipped with the lower guide passageway 19 of being connected with the coal feed inlet on discharging channel 36, feeding shaft 35 rotates and drives spiral feeding blade 24 and rotate the material transportation that makes in the feed bin 18 to guide passageway 19 and pass the coal feed inlet and enter stove body 20. In order to avoid the water gas generated in the furnace body 20 from being guided into the stock bin 18 from the material guiding channel 19 when the material feeding is not needed, the utility model discloses be equipped with the solenoid valve 191 on the material guiding channel 19, be convenient for control the opening and closing of material guiding channel 19.
Because the utility model discloses the driving motor 32 who sets up can realize automated control through the PWM signal for servo motor, for effectively utilizing this kinetic energy (main (mixing) shaft 34 does not stir often when also using), the utility model discloses the driving motor 32 who sets up can also drive the rotation of pay-off shaft 35, specifically, pay-off shaft 35 is equipped with the first bevel gear 22 of coaxial setting, first bevel gear 22 meshes there is second bevel gear 23, and second bevel gear 23 is connected with third bevel gear 27 through first installation axle 25, and first installation axle 25 is connected through bearing rotation with mounting panel 26 that the outer wall of feed bin 18 set up; the third bevel gear 27 is meshed with a fourth bevel gear 28, the fourth bevel gear 28 is connected with a fifth bevel gear 31 through a second mounting shaft 29, the second mounting shaft is rotatably connected with a supporting rod 30 fixed on the outer wall of the storage bin 18 through a bearing, and the fifth bevel gear 31 is meshed with a sixth bevel gear 33 arranged on a stirring shaft 34. So that the driving motor 32 can drive the feeding rod to rotate when working, and the feeding rod rotates to drive the spiral feeding blade 24 to rotate for quantitative feeding.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (8)
1. The utility model provides a lump coal gas making device for synthetic ammonia, includes the stove body, the stove body sets up coal feed inlet, its characterized in that: the coal feeding port is communicated with a lump coal pretreatment mechanism, the lump coal pretreatment mechanism comprises a screening unit and a storage unit which are communicated, and the storage unit is communicated with the coal feeding port;
the screening unit comprises a box body, a feeding channel arranged on the box body, a screening assembly arranged below the feeding channel and arranged in the box body, and at least one blanking channel arranged on the box body and matched with the screening assembly for use;
the screening component comprises at least two screens arranged on an upper spacing layer and a lower spacing layer and a connecting shaft for connecting the screens, wherein the mesh apertures of the screens are gradually reduced from top to bottom,
the connecting shaft is driven to rotate through the driving assembly, the connecting shaft rotates to drive the plurality of screen meshes to rotate to screen lump coal, and the lump coal with qualified particle size is guided into the storage unit through the blanking channel.
2. The lump coal gas-making device for ammonia synthesis according to claim 1, wherein: a crushing component for thinning the grain diameter of the lump coal is arranged on at least one screen along the direction from top to bottom,
crushing unit includes center pin and rather than the roll roller of being connected, roll roller axial and screen cloth parallel and be the clearance setting between roll roller outer wall and the screen cloth, the center pin rotates with the box lateral wall to be connected, the center pin passes through the connecting piece and is connected with the connecting axle and makes the connecting axle rotate and drive the center pin and rotate.
3. The lump coal gas-making device for ammonia synthesis according to claim 2, wherein: the connecting piece comprises a worm wheel and a worm section which are matched with each other, the worm wheel and the central shaft are coaxially arranged, and the worm section and the connecting shaft are coaxially arranged.
4. The lump coal gas-making device for ammonia synthesis according to claim 3, wherein: the screen mesh provided with the crushing assembly is also provided with a material poking rod used in a matched manner.
5. The lump coal gas-making device for synthetic ammonia according to any one of claims 1 to 4, wherein: the storage unit comprises a bin communicated with the blanking channel, and a material accumulation preventing assembly is arranged in the bin;
the material accumulation preventing component comprises a stirring shaft which is rotationally connected with the side wall of the storage bin and a plurality of stirring blades which are arranged on the stirring shaft, wherein one end of the stirring shaft penetrates through the side wall of the storage bin and is connected with a driving motor,
the bottom of the storage bin is obliquely arranged, and the oblique lower end of the bottom of the storage bin is connected with a discharging channel communicated with the coal feeding hole.
6. The lump coal gas-making device for ammonia synthesis according to claim 5, wherein: the spiral feeding assembly is arranged in the discharging channel and comprises a feeding shaft arranged along the length direction of the discharging channel and a spiral feeding blade wound on the feeding shaft, wherein the discharging channel is provided with a guide channel connected with the coal feeding hole, and the feeding shaft rotates to drive the spiral feeding blade to rotate so that materials in the storage bin are transported to the guide channel and pass through the coal feeding hole to enter the furnace body.
7. The lump coal gas-making device for ammonia synthesis according to claim 6, wherein: the feeding shaft is provided with a first bevel gear which is coaxially arranged, the first bevel gear is meshed with a second bevel gear, the second bevel gear is provided with a third bevel gear which is coaxially arranged, the third bevel gear is meshed with a fourth bevel gear, the fourth bevel gear is provided with a fifth bevel gear which is coaxially arranged, and the fifth bevel gear is mutually meshed with a sixth bevel gear which is arranged on the stirring shaft.
8. The lump coal gas-making device for synthetic ammonia according to any one of claims 1 to 4, wherein: the driving assembly includes a rotation motor coupled with a connection shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021426077.2U CN213377702U (en) | 2020-07-20 | 2020-07-20 | Lump coal gas making device for synthetic ammonia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021426077.2U CN213377702U (en) | 2020-07-20 | 2020-07-20 | Lump coal gas making device for synthetic ammonia |
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| CN213377702U true CN213377702U (en) | 2021-06-08 |
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| CN202021426077.2U Active CN213377702U (en) | 2020-07-20 | 2020-07-20 | Lump coal gas making device for synthetic ammonia |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370705A (en) * | 2021-12-31 | 2022-04-19 | 甄伟静 | Energy-saving combustion furnace |
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2020
- 2020-07-20 CN CN202021426077.2U patent/CN213377702U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370705A (en) * | 2021-12-31 | 2022-04-19 | 甄伟静 | Energy-saving combustion furnace |
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