CN215572051U

CN215572051U - Rotary kiln combustion device of cracking fuel gas containing chromium leather scraps

Info

Publication number: CN215572051U
Application number: CN202121045959.9U
Authority: CN
Inventors: 孙辉跃; 潘翔; 翁丁阳; 张戈锋
Original assignee: Fujian Micro Water Environmental Protection Co ltd
Current assignee: Fujian Micro Water Environmental Protection Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-01-18
Anticipated expiration: 2031-05-17

Abstract

The utility model discloses a rotary kiln combustion device for cracking fuel gas containing chromium dander, and relates to the technical field of biomass combustion equipment. This burner includes the combustion chamber, the combustion chamber bottom is equipped with biomass combustion mechanism, the combustion chamber middle section is equipped with gas combustion mechanism, a heat supply for supplementary biomass combustion mechanism, combustion chamber one side is equipped with automatic feeding subassembly, automatic feeding subassembly's export is towards the setting of burning rack, gas combustion mechanism includes the spray gun, the spray gun is towards the central line slope setting of burning rack, be equipped with the infrared thermometer that is used for implementing flame temperature in the measurement combustion chamber in the combustion chamber, the device can use the schizolysis gas to carry out supplementary burning when using biomass fuel burning, improve the not high condition of biomass fuel calorific value, sufficient heat energy is provided, this process is mainly with living beings (chaff) fuel, the gas burning is supplementary, the quantity of living beings has been reduced, gas supply instability has also been alleviated, the poor problem of gas burner adaptability.

Description

Rotary kiln combustion device of cracking fuel gas containing chromium leather scraps

Technical Field

The utility model relates to the technical field of biomass combustion equipment, in particular to a rotary kiln combustion device for cracking fuel gas containing chromium dander.

Background

In the early days, chromium-containing waste shavings mainly adopt the traditional waste treatment mode: burying or burning; although the chromium-containing waste leather scraps can be effectively treated, the method brings great harm to the environment and also causes great waste of resources. Therefore, the chromium-containing waste leather scraps are mostly treated by adopting a cracking mode at present. Pyrolysis is pyrolysis, and many inorganic and organic materials undergo decomposition reactions when heated to some extent.

The total amount of exhaust gas released from the pyrolysis furnace is greatly reduced compared to incinerators. In addition, the waste gas can be filtered and purified, and the pollution to the environment is further reduced. The rotary kiln is also called rotary bed kiln and calcining kiln, and can be divided into cement kiln, metallurgical chemical kiln and lime kiln according to different materials to be treated. When the rotary kiln is operated, heating is generally performed by a biomass combustion device.

At present, chinese patent with publication number CN102288027A discloses a multi-burner in a rotary kiln body, including many parallel arrangement's air pipe and gas pipe, the exit end of gas pipe sets up gas air mixed flow mechanism, the near mixed flow district that forms of exit end of gas pipe in the air pipe, set up passageway formula ignition mechanism in the multi-burner, passageway formula ignition mechanism runs through the mixed flow district of a plurality of air pipes. A channel type ignition mechanism is arranged in the multi-burner, the ignition mechanism penetrates through mixed flow areas of the multiple air pipes, and the channel type ignition mechanism is directly contacted with the mixed flow areas of the multiple air pipes.

Although the ignition structure in the narrow space inside the rotary kiln is simplified and the burner is convenient to overhaul and replace, due to the fact that gas supply is unstable, adaptation performance of gas burning equipment is poor, and factors such as environmental protection and usage are considered, biomass (bran and the like) fuel is mostly used for burning and supplying heat, the biomass fuel is used, the heat value is low, heat generated by burning is small, and cost is higher than that of gas generated by cracking to a certain extent.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems, the utility model overcomes the defects of the prior art and provides a rotary kiln combustion device for cracking fuel gas containing chromium dander.

In order to solve the technical problem, the utility model provides a rotary kiln combustion device for cracking fuel gas containing chromium dander.

The technical effects are as follows: can use the schizolysis gas to carry out supplementary burning when using the biomass fuel burning, improve the not high condition of biomass fuel calorific value, for production provides sufficient heat energy, this process uses living beings (chaff) fuel as leading, the gas burning is supplementary, the quantity of living beings has been reduced, the gas supply is unstable has also been alleviated, the poor problem of gas burner adaptability, semi-automatization material loading can also be realized to the while, avoid needing the manual work to put into combustion apparatus with biomass fuel and produce the danger of burn.

The technical scheme of the utility model is further defined as follows: the utility model provides a rotary kiln burner who contains schizolysis gas of chrome leather bits, which comprises a combustion chamber, the combustion chamber bottom is equipped with biomass combustion mechanism, the combustion chamber middle section is equipped with gas combustion mechanism, a heat supply for supplementary biomass combustion mechanism, biomass combustion mechanism is including connecting the burning rack in the combustion chamber bottom, burning rack center is provided with the ignition mouth, combustion chamber one side is equipped with automatic feeding subassembly, the export of automatic feeding subassembly sets up towards burning rack, gas combustion mechanism includes the spray gun, the spray gun sets up towards the central line slope of burning rack, be equipped with in the combustion chamber and be used for implementing the infrared thermometer who measures the interior flame temperature of combustion chamber.

Furthermore, the side of the combustion chamber is communicated with an air inlet formed in the circumferential direction of the plurality of combustion chambers, an ash hopper is arranged at the bottom of the combustion net rack in the combustion chamber, the tail end of the ash hopper is an ash discharge port, and the ash discharge port is closed through a sealing cover connected to the bottom of the combustion chamber in a rotating manner.

Preceding a rotary kiln burner who contains schizolysis gas of chrome scurf, the automatic feeding subassembly includes the last feed bin that the vertical combustion chamber set up, goes up the feed bin and includes feed inlet and discharge gate, and the discharge gate is located combustion rack top in the combustion chamber, and the feed inlet is located one side that the combustion chamber was kept away from to the feed bin, goes up and is equipped with spiral pay-off spare in the feed bin.

The rotary kiln combustion device of cracking gas containing chromium dander, the spiral feeding piece comprises a rotating shaft which is parallel to the upper storage bin and is connected with the upper storage bin in a rotating mode, spiral blades which are spirally arranged are fixed on the rotating shaft, and the diameter of each spiral blade is the same as the inner diameter of the upper storage bin.

The rotary kiln combustion device for cracking gas containing chromium leather scraps comprises a spiral feeding piece, wherein the spiral feeding piece comprises a motor reducer fixed at the tail end of an upper storage bin, an output shaft of the motor reducer is fixedly connected with the same axis of a rotating shaft, a hopper is arranged on a feeding hole, and the top of the hopper is connected with a storage box.

Preceding a rotary kiln burner who contains schizolysis gas of chrome dander, the one end that lies in the discharge gate on going up the feed bin is fixed with the play flitch, goes out the flitch tilt up setting for with the material lifting and fall into combustion net rack central point and put, go out the flitch both sides and be fixed with the stock guide of perpendicular horizontal plane setting.

The rotary kiln combustion device of cracking gas containing chromium dander is characterized in that the sealing cover is rotatably connected to the ash discharge port through the rotating shaft, the ash discharge port is fixedly provided with the rotating motor, the output shaft of the rotating motor is fixedly provided with the rotating worm, the rotating shaft is coaxially provided with the rotating worm wheel, and the rotating worm wheel is meshed with the rotating worm.

The rotary kiln combustion device for the pyrolysis gas containing the chromium dander is characterized in that two groups of spray guns are arranged on the central line of a combustion chamber, ignition guns are arranged on the central line in the spray guns, the tail ends of the spray guns are connected with gas storage tanks arranged outside the combustion chamber, and gas inlet pipes used for discharging air are further communicated with the positions, located on the spray guns, of the ignition guns.

The utility model has the beneficial effects that:

(1) in the utility model, when in use, the automatic feeding mechanism can automatically push biomass (bran coat) fuel particles into the combustion chamber for incineration, the fuel particles pushed into the combustion chamber fall on the combustion net rack, ignition combustion is carried out through the ignition port arranged in the middle, the gas combustion mechanisms on two sides synchronously work, pyrolysis gas is discharged from the spray gun while the biomass is combusted, ignition is carried out through the ignition gun, and the biomass fuel is matched for synchronous heat supply, so that the biomass fuel is taken as a combustion main body, the gas combustion is taken as an auxiliary, the use amount of the biomass fuel can be greatly reduced, the stable condition of the gas combustion is improved, the stability and the combustion stability in the combustion chamber are improved, and the cost is reduced to a certain extent;

(2) according to the utility model, the fuel particles are supported by the combustion net rack, so that the air permeability at the bottom of the fuel pile can be improved while the fuel particles are stably stacked, the completeness of fuel combustion is improved, and the net openings on the combustion net rack can enable ashes and dust generated after the fuel is combusted to directly fall into an underground ash bucket, so that an operator can conveniently clean the ash discharge opening, and the ashes and the dust in the ash discharge opening can be cleaned only by opening the sealing cover when the operator cleans the ash discharge opening;

(3) according to the utility model, the spiral feeding piece can convey the combustion particles in the storage bin into the combustion chamber through the rotary spiral blade for combustion treatment, the spiral feeding piece can uniformly and stably feed the fuel particles into the combustion chamber, the situations of scalding and the like caused by manually feeding the fuel into the combustion chamber are avoided, the integral automation degree is improved, and the combustion stability can be ensured by uniformly feeding the fuel particles, so that the heat supply stability is ensured;

(4) according to the utility model, the material guide plate and the material discharge plate are arranged to lift materials to a certain height after the materials are conveyed into the combustion chamber, the lifted materials can be more uniformly scattered on the combustion net rack, the utilization degree of fuel particles is improved, uniform combustion is ensured, the rotating motor drives the rotating worm to rotate, the rotating worm wheel and the rotating shaft are linked to rotate, the sealing cover can be opened or closed, the temperature condition in the combustion chamber can be detected through the infrared thermometer, the gas supply quantity of the auxiliary gas combustion mechanism is adjusted, the fire power of gas combustion is adjusted, and stable heat supply of the combustion device is realized;

(5) according to the biomass fuel combustion assisting device, pyrolysis fuel gas can be used for assisting combustion while biomass fuel is used for combustion, the condition that the heat value of the biomass fuel is not high is improved, enough heat energy is provided for production, biomass (bran) fuel is used as the main fuel in the process, fuel gas combustion is used as the assistance, the using amount of biomass is reduced, the problems that fuel gas supply is unstable and adaptability of a fuel gas combustor is poor are solved, semi-automatic feeding can be achieved, and the danger of burning caused by the fact that the biomass fuel needs to be manually fed into a combustion device is avoided.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a structural view of an automatic feeding unit in example 1;

FIG. 3 is a structural view of a discharge plate in example 1;

fig. 4 is a structural view of a rotary electric machine in embodiment 1.

Wherein: 1. a combustion chamber; 11. an ash hopper; 12. an ash discharge port; 13. sealing the cover; 14. a rotating electric machine; 15. rotating the worm gear; 16. rotating the worm; 17. a rotating shaft; 18. an air inlet; 2. a biomass combustion mechanism; 21. a combustion net rack; 22. an ignition port; 3. a gas combustion mechanism; 31. a spray gun; 32. an ignition gun; 33. a gas storage tank; 34. an air inlet pipe; 4. an automatic feeding assembly; 41. feeding a bin; 42. a screw-type feeding member; 421. a rotating shaft; 422. a helical blade; 423. a hopper; 43. a motor reducer; 44. a material storage box; 45. a discharge plate; 46. a material guide plate.

Detailed Description

The rotary kiln burner of schizolysis gas that this embodiment provided contains chromium dander, the structure is shown in fig. 1, including cylindrical shape's combustion chamber 1, 1 bottom of combustion chamber is equipped with biomass combustion mechanism 2, and biomass combustion mechanism 2 is including connecting the burning rack 21 in 1 bottom of combustion chamber, and burning rack 21 center is provided with ignition mouth 22, and 1 middle section of combustion chamber is equipped with gas combustion mechanism 3 for supplementary biomass combustion mechanism 2 heat supplies.

As shown in figure 1, the side surface of the combustion chamber 1 is communicated with a plurality of air inlets 18 arranged in the circumferential direction, an ash bucket 11 is arranged at the bottom of a combustion net rack 21 in the combustion chamber 1, the tail end of the ash bucket 11 is provided with an ash discharge port 12, and the ash discharge port 12 is closed by a sealing cover 13 which is rotatably connected to the bottom of the combustion chamber 1. An infrared thermometer for measuring the flame temperature in the combustion chamber 1 is also arranged in the combustion chamber 1.

As shown in fig. 1 and 2, combustion chamber 1 one side is equipped with automatic feeding subassembly 4, and the export of automatic feeding subassembly 4 sets up towards combustion net rack 21, and automatic feeding subassembly 4 includes the last feed bin 41 that perpendicular combustion chamber 1 set up, and last feed bin 41 includes feed inlet and discharge gate, and the discharge gate is located combustion net rack 21 top in combustion chamber 1, and the feed inlet is located the one side that combustion chamber 1 was kept away from to last feed bin 41, is equipped with spiral pay-off 42 in the last feed bin 41.

As shown in fig. 1 to 3, the screw feeder 42 includes a rotating shaft 421 parallel to the upper bin 41 and rotatably connected to the upper bin 41, a spiral blade 422 is fixed to the rotating shaft 421, and the diameter of the spiral blade 422 is the same as the inner diameter of the upper bin 41. Spiral pay-off piece 42 is including fixing at last feed bin 41 terminal motor reducer 43, and motor reducer 43's output shaft and axis of rotation 421 are with axle center fixed connection, are equipped with hopper 423 on the feed inlet, and hopper 423 top is connected with storage case 44.

As shown in fig. 1 and 4, a discharging plate 45 is fixed at one end of the upper bin 41 at the discharging port, the discharging plate 45 is disposed in an upward inclined manner and used for lifting the material and dropping the material into the central position of the combustion net rack 21, and material guiding plates 46 disposed in a vertical horizontal plane are fixed at two sides of the discharging plate 45. The sealing cover 13 is rotatably connected to the ash discharge port 12 through a rotating shaft 17, a rotating motor 14 is fixed on the ash discharge port 12, a rotating worm 16 is fixed on an output shaft of the rotating motor 14, a rotating worm wheel 15 is coaxially arranged on the rotating shaft 17, and the rotating worm wheel 15 is meshed with the rotating worm 16.

As shown in fig. 1-3, the gas combustion mechanism 3 includes a lance 31, and the lance 31 is disposed obliquely toward the center line of the combustion net frame 21. Two groups of spray guns 31 are arranged about the central line of the combustion chamber 1, an ignition gun 32 is arranged at the position of the central line in the spray gun 31, the tail end of the spray gun 31 is connected with an air storage tank 33 arranged outside the combustion chamber 1, and an air inlet pipe 34 used for discharging air is further communicated with the position, located on the ignition gun 32, of the spray gun 31.

The specific implementation process comprises the following steps: automatic feed mechanism can burn in pushing into combustion chamber 1 with living beings (chaff) fuel granule is automatic, and the fuel granule that pushes into in combustion chamber 1 drops on burning rack 21, ignites the burning through setting up the ignition mouth 22 in the centre, and the gas combustion mechanism 3 synchronous working of both sides, discharges the schizolysis gas in spray gun 31 when living beings burning, ignites through burning torch 32, cooperates the synchronous heat supply of biomass fuel.

The biomass fuel combustion assisting device can use the pyrolysis fuel gas for assisting combustion while using the biomass fuel for combustion, improves the situation of low heat value of the biomass fuel, provides enough heat energy for production, takes the biomass (bran coat) fuel as the main process and the fuel gas combustion as the auxiliary process, reduces the using amount of the biomass, relieves the problems of unstable fuel gas supply and poor adaptability of a fuel gas combustor, can realize semi-automatic feeding, and avoids the danger of burning caused by the need of manually putting the biomass fuel into a combustion device.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a rotary kiln burner who contains schizolysis gas of chromium dander, includes combustion chamber (1), its characterized in that: the utility model discloses a biomass combustion device, including combustion chamber (1), combustion chamber (1) bottom is equipped with biomass combustion mechanism (2), combustion chamber (1) middle section is equipped with gas combustion mechanism (3), be used for supplementary biomass combustion mechanism (2) heat supply, biomass combustion mechanism (2) are including connecting combustion rack (21) in combustion chamber (1) bottom, combustion rack (21) center is provided with ignition mouth (22), combustion chamber (1) one side is equipped with automatic feeding subassembly (4), the export of automatic feeding subassembly (4) sets up towards combustion rack (21), gas combustion mechanism (3) include spray gun (31), spray gun (31) set up towards the central line slope of combustion rack (21), be equipped with in combustion chamber (1) and be used for implementing the infrared thermometer who measures flame temperature in combustion chamber (1).

2. The rotary kiln combustion device for the chromium-containing dander pyrolysis gas as claimed in claim 1, wherein: the side face of the combustion chamber (1) is communicated with an air inlet (18) formed in the circumferential direction of a plurality of combustion chambers, an ash hopper (11) is arranged at the bottom of a combustion net rack (21) in the combustion chamber (1), the tail end of the ash hopper (11) is an ash discharge port (12), and the ash discharge port (12) is closed through a sealing cover (13) connected to the bottom of the combustion chamber (1) in a rotating mode.

3. The rotary kiln combustion device for the chromium-containing dander pyrolysis gas as claimed in claim 1, wherein: automatic material loading subassembly (4) are including last feed bin (41) that perpendicular combustion chamber (1) set up, go up feed bin (41) and include feed inlet and discharge gate, and the discharge gate is located combustion chamber (1) internal combustion rack (21) top, and the feed inlet is located one side that feed bin (41) kept away from combustion chamber (1), goes up and is equipped with spiral pay-off piece (42) in feed bin (41).

4. The rotary kiln combustion device for the chromium-containing dander pyrolysis gas as claimed in claim 3, wherein: spiral feeding piece (42) are including being on a parallel with last feed bin (41) and rotation connection rotating shaft (421) in last feed bin (41), are fixed with helical blade (422) that the heliciform set up on rotating shaft (421), and the diameter of helical blade (422) is the same with the internal diameter of last feed bin (41).

5. The rotary kiln combustion device for the chromium-containing dander pyrolysis gas as claimed in claim 4, wherein: spiral pay-off piece (42) are including fixing motor reducer (43) at last feed bin (41) end, and the output shaft and axis of rotation (421) coaxial fixed connection of motor reducer (43) are equipped with hopper (423) on the feed inlet, and hopper (423) top is connected with storage case (44).

6. The rotary kiln combustion device for the chromium-containing dander pyrolysis gas as claimed in claim 5, wherein: go up the one end that lies in the discharge gate on feed bin (41) and be fixed with play flitch (45), go out flitch (45) tilt up setting for with the material lifting and fall into combustion net rack (21) central point and put, go out flitch (45) both sides and be fixed with stock guide (46) that vertical horizontal plane set up.

7. The combustion device of the rotary kiln for the pyrolysis gas containing chromium shavings as recited in claim 2, wherein: the sealing cover (13) is rotatably connected to the ash discharging port (12) through a rotating shaft (17), a rotating motor (14) is fixed on the ash discharging port (12), a rotating worm (16) is fixed on an output shaft of the rotating motor (14), a rotating worm wheel (15) is coaxially arranged on the rotating shaft (17), and the rotating worm wheel (15) is meshed with the rotating worm (16).

8. The rotary kiln combustion device for the chromium-containing dander pyrolysis gas as claimed in claim 1, wherein: the central line about combustion chamber (1) of spray gun (31) is provided with two sets ofly, and central line position is equipped with burning torch (32) in spray gun (31), and spray gun (31) end connection locates gas holder (33) outside combustion chamber (1), and the position that lies in burning torch (32) on spray gun (31) still communicates intake pipe (34) that are used for the exhaust air.