CN209341266U - Sludge incineration rotary kiln - Google Patents

Abstract

The utility model belongs to sludge incinerator technical field.The serious wear of the supporting arrangement and driving device that are currently used for below the tilting rotary kiln kiln body of sludge incineration.For the problems of the prior art, the utility model discloses a kind of sludge incineration rotary kilns, including feeding device, kiln body and dual firing chamber；Feeding device includes feed hopper, vertical hopper and horizontal hopper, and the separate and side close to kiln body feed inlet of horizontal hopper is respectively equipped with the pusher and overhead door of sludge push-in kiln body；Kiln body is driven by driving device, is rotatablely installed on supporting arrangement；Kiln body is horizontally disposed with along axial, and the inner wall fitting setting refractory material layer of kiln body, refractory material layer uniformly increases along axial direction from kiln tail to kiln hood thickness；The top of dual firing chamber is equipped with exhanst gas outlet, and side wall is equipped with secondary burner and air inlet, and inside is equipped with several spoilers being interspersed in parallel in the longitudinal direction.The utility model can improve the abrasion condition of supporting arrangement and driving device below kiln body.

Description

Sludge incineration rotary kiln

Technical field

The utility model relates to a kind of rotary kilns, and in particular to a kind of sludge incineration rotary kiln belongs to sludge incinerator Technical field.

Background technique

As the improvement of people's living standards, large quantities of sewage treatment plants start to build and go into operation in succession.Sewage treatment plant In each stage handled sewage, can all there be sludge generation, a large amount of bacterium, virus, a huge sum of money are contained in these sludge The poisonous and harmful substances such as category are caused due to generally existing " sewage treatment again, the light sludge treatment " phenomenon of the sewage treatment industry in China Make a large amount of sludge be difficult to dispose, seriously affects environmental quality, the highest attention and attention by society.

Sludge mostly uses the mode of landfill or air storage to be disposed, and this simple disposal options are difficult to remove sludge In the poisonous and harmful substance that contains, will cause a large amount of sludge pollution object with percolate and enter deep layer from earth's surface, threaten underground water And rivers,lakes and seas, cause environmental pollution.And burning disposal is treated using sludge as a kind of solid waste, as urban life rubbish Rubbish equally carries out innoxious, recycling, minimizing processing.

The rotary kiln of sludge incineration is currently used for when carrying out burning disposal to sludge, since the length of rotary kiln is longer, It realizes and is continuously moved forward when sludge burns in rotary kiln, often applied in the prior art to the cylinder of rotary kiln certain Gradient, this will generate axial force in the support roller and driving device of cylinder body bottom, aggravate the abrasion of contact surface.In addition, The material that cylinder gradient causes kiln hood position is higher than kiln tail, will lead to internal high temperature cigarette when rotary kiln positive pressure occurs in a short time Gas overflows, and the phenomenon that smokeing clogging and being tempered occurs, hopper fire is also resulted in when serious, burn out entire feeding system, influence to burn The safety of burning system.

Utility model content

For the problems of the prior art, the utility model provides a kind of sludge incineration rotary kiln, the rotary kiln pass through by Kiln body is axially horizontal positioned, refractory material layer in kiln body is arranged in constant slope, so that kiln body bottom in rotary course Supporting arrangement and the axially loaded of driving device are far below tilting rotary kiln, improve the supporting arrangement below kiln body and driving The abrasion condition of device.

To realize the above technical purpose, the technical solution of the utility model is:

A kind of sludge incineration rotary kiln, including supporting table are successively arranged feeding device, kiln body and dual firing chamber in supporting table； The feeding device includes the feed hopper being sequentially communicated from top to bottom, vertical hopper and horizontal hopper, and feeding funnel bottom part is equipped with and turns over Revolving door, horizontal hopper are equipped with far from the side of kiln body feed inlet for sludge to be pushed into kiln body pusher, and horizontal hopper is close The side of kiln body feed inlet is equipped with overhead door, turnover door and overhead door by hydraulic drive, and when charging, turnover door and overhead door are handed over For opening and closing；The kiln body rotational installation is driven by driving device and is rotated on the supporting arrangement for being located at kiln body both ends, the kiln of kiln body It is equipped with kiln head cover at head, primary combustion device and blast pipe are installed on kiln head cover, burner spray canister and blast pipe protrude into kiln body It is interior；The kiln body is tubular structure, and kiln body is along axial horizontally disposed, the inner wall fitting setting refractory material layer of kiln body, fire proofed wood The bed of material uniformly increases along axial direction from the kiln tail of kiln body to kiln hood thickness；The dual firing chamber is connected with the kiln tail of kiln body；Described two The top for firing room is equipped with exhanst gas outlet, and exhanst gas outlet is connected by pipeline with exhaust gas processing device, and dual firing chamber's side wall is equipped with two Secondary burner and air inlet, secondary burner are located above air inlet, and air inlet is located above kiln body, and dual firing chamber bottom is equipped with ash Bucket；Several spoilers are equipped in the dual firing chamber, spoiler is located above secondary burner, and spoiler includes left spoiler and the right side Spoiler, left spoiler and right spoiler are located on the inner wall of dual firing chamber's axis two sides, and left spoiler and right spoiler exist It is staggered in parallel on longitudinal direction, the right end of left spoiler is located at the right of right spoiler left end.

The utility model is by axially horizontal positioned by the kiln body of rotary kiln, by refractory material layer in kiln body along axial direction from kiln The kiln tail of body to kiln hood thickness uniformly increases setting, so that the kiln body supporting arrangement of bottom and driving device in rotary course Axially loaded is far below tilting rotary kiln, improves the abrasion condition of the supporting arrangement and driving device below kiln body, kiln body It is not easy to glide along material moving direction；In addition, being contributed to form by kiln hood extremely inside the refractory material layer being arranged in constant slope The air-flow rising space in kiln tail direction, peomotes high-temperature flue gas and flows to dual firing chamber, avoids kiln hood over-emitting black exhaust and tempering phenomenon, It ensure that the safe and reliable of incineration system.In addition, the utility model by being just arranged the resistance being interspersed in parallel on the burner Flowing plate can increase residence time of the high-temperature flue gas in dual firing chamber, extend the burning time of organic matter in high-temperature flue gas, make it Full combustion, to improve efficiency of combustion.

Preferably, the refractory material layer is far from the gradient between an end face of kiln body wall and horizontal direction 4%~5%.

Preferably, the air inlet is along dual firing chamber's periphery arranged tangential.The utility model is by existing air inlet Dual firing chamber's periphery arranged tangential can be such that the combustion air entered in dual firing chamber moves upwards along dual firing chamber's inner cavity circumferential direction spiral, promote Make air and the full and uniform mixing of high-temperature flue gas, improves the efficiency of combustion of organic matter in high-temperature flue gas, prevent imperfect combustion Large dust particle be deposited on exhanst gas outlet and block exhanst gas outlet.

Preferably, the kiln tail junction of the ash bucket and kiln body is equipped with stock guide diagonally downward.Pass through setting The sludge residue that stock guide facilitates after burning falls into ash bucket from the kiln tail of kiln body, and residue is prevented to be blocked in kiln tail.

Preferably, the tapered setting of the feed hopper.

Preferably, the pusher includes scraping wings and charging ram, and scraping wings is connected on charging ram, pusher Bar is hydraulic stem, is hydraulically operated horizontal reciprocating movement.

Preferably, the driving device includes that annular drive rack and servo motor, annular drive rack are fixed It is mounted on outer wall in the middle part of kiln body, annular drive rack is connected with servo motor, is driven and is rotated by servo motor.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the partial enlarged view of the utility model；

Fig. 3 is the cross-sectional view of kiln body in the utility model；

Fig. 4 is the structural schematic diagram of air inlet in the utility model；

Appended drawing reference:

100. 320. servo motor of supporting table 200. supporting arrangement, 310. drive rack, 400. feeding device 410. into Vertical 430. 432. scraping wings of horizontal 431. charging ram of hopper of hopper, 433. overhead door of 411. turnover door of hopper 420. 500. kiln body, 510. kiln head cover, 511. primary combustion device, 512. blast pipe, 520. refractory material layer, 600. dual firing chamber 610. The left choked flow of 650. stock guide of exhanst gas outlet 620. secondary burner, 630. air inlet, 640. ash bucket, 641. slag-drip opening 660. The right spoiler of plate 670.

Specific embodiment

In conjunction with Fig. 1 to Fig. 4, a specific embodiment of the utility model is described in detail, but not to the power of the utility model Benefit requires to do any restriction.

As shown in Figures 1 to 4, a kind of sludge incineration rotary kiln, including supporting table 100, be successively arranged in supporting table 100 into Expect device 400, kiln body 500 and dual firing chamber 600；

The feeding device 400 includes feed hopper 410, vertical hopper 420 and the horizontal hopper being sequentially communicated from top to bottom 430, the tapered setting of feed hopper 410,410 bottom of feed hopper is equipped with turnover door 411, and horizontal hopper 430 is fed far from kiln body 500 The side of mouth is equipped with for sludge to be pushed into 500 pusher of kiln body, wherein pusher includes scraping wings 432 and charging ram 431, scraping wings 432 is connected on charging ram 431, and charging ram 431 is hydraulic stem, is hydraulically operated horizontal reciprocating movement, horizontal Hopper 430 is equipped with overhead door 433, turnover door 411 and overhead door 433 by hydraulic drive close to the side of 500 feed inlet of kiln body, When charging, turnover door 411 and overhead door 433 are alternately opened and closed；

The rotational installation of kiln body 500 is turned on the supporting arrangement 200 for being located at 500 both ends of kiln body by driving device driving It is dynamic, wherein driving device includes that annular drive rack 310 and servo motor 320, annular drive rack 310 are fixedly mounted on kiln 500 middle part outer wall of body, annular drive rack 310 are connected with servo motor 320, are driven and are rotated by servo motor 320, kiln body 500 Kiln hood at be equipped with kiln head cover 510, primary combustion device 511 and blast pipe 512, primary combustion device 511 are installed on kiln head cover 510 Spray canister and blast pipe 512 protrude into kiln body 500；The kiln body 500 is tubular structure, and kiln body 500 is along axial horizontally disposed, kiln The inner wall fitting setting refractory material layer 520 of body 500, refractory material layer 520 is along axial direction from the kiln tail of kiln body 500 to kiln hood thickness Uniformly increasing, wherein gradient between an end face and horizontal direction of the refractory material layer 520 far from 500 wall of kiln body is 4%~ 5%；

The dual firing chamber 600 is connected with the kiln tail of kiln body 500；The top of the dual firing chamber 600 is equipped with exhanst gas outlet 610, exhanst gas outlet 610 is connected by pipeline with exhaust gas processing device, and 600 side wall of dual firing chamber is equipped with 620 He of secondary burner Air inlet 630, secondary burner 620 are located at 630 top of air inlet, and air inlet 630 is located at 500 top of kiln body, 630 edge of air inlet 600 periphery arranged tangential of dual firing chamber, 600 bottom of dual firing chamber are equipped with ash bucket 640, and ash bucket 640 and the kiln tail junction of kiln body 500 are set There is stock guide 650 diagonally downward, 640 bottom of ash bucket is equipped with slag-drip opening 641；Several spoilers are equipped in the dual firing chamber 600, Spoiler is located at 620 top of secondary burner, and spoiler includes left spoiler 660 and right spoiler 670, left 660 He of spoiler Right spoiler 670 is located on the inner wall of 600 axis two sides of dual firing chamber, and left spoiler 660 and right spoiler 670 are in the longitudinal direction It is staggered in parallel, the right end of left spoiler 660 is located at the right of right 670 left end of spoiler.

Working principle:

When charging, overhead door 433 is closed, opens turnover door 411, sludge falls into level by vertical hopper 420 from hopper In hopper 430, turnover door 411 is closed, opens overhead door 433, charging ram 431 drives scraping wings 432 to move horizontally to the right will be to Burning sludge is sent into kiln body 500, is closed overhead door 433, is passed through First air into kiln body 500 by blast pipe 512, passes through one 511 burning sludges of secondary burner start servo motor 320, and kiln body 500 rotates, and the sludge in kiln body 500 is in burning with kiln The rotation of body 500 is mobile to kiln tail, wherein a large amount of nuisances are had in the high-temperature flue gas that sludge is discharged after burning in rotary kiln Matter and large dust particle, these high-temperature flue gas enter dual firing chamber 600, and and enter from air inlet 630 secondary in dual firing chamber 600 The circumferential spiral of wind side mixing edge dual firing chamber 600 moves upwards, and the organic matter lighted in 620 high-temperature flue gas of secondary burner occurs Burning, due to the barrier effect of spoiler, organic matter in high-temperature flue gas full combustion, the height after burning in dual firing chamber 600 Warm flue gas is discharged through exhanst gas outlet 610；Residue after sludge incineration is fallen into after ash bucket 640 by stock guide 650 through slag-drip opening 641 Discharge.

In conclusion the utility model has the advantage that

It, will be resistance in kiln body 500 by the way that the kiln body 500 of rotary kiln is axial horizontal positioned 1. the utility model structure is simple Fiery material layer 520 uniformly increases setting from the kiln tail of kiln body 500 to kiln hood thickness along axial direction, so that kiln body 500 is in rotary course The supporting arrangement 200 of middle bottom and the axially loaded of driving device are far below tilting rotary kiln, improve 500 lower section of kiln body The abrasion condition of supporting arrangement 200 and driving device, kiln body 500 are not easy to glide along material moving direction；In addition, being in constant slope It is contributed to form inside the refractory material layer 520 of setting by the air-flow rising space of kiln hood to kiln tail direction, peomotes height Warm flue gas flow direction dual firing chamber 600, avoids kiln hood over-emitting black exhaust and tempering phenomenon, ensure that the safe and reliable of incineration system.

2. the utility model enters dual firing chamber 600 by that can make air inlet 630 in 600 periphery arranged tangential of dual firing chamber Interior combustion air is moved upwards along 600 inner cavity circumferential direction spiral of dual firing chamber, promotes air and the full and uniform mixing of high-temperature flue gas, Improve the efficiency of combustion of organic matter in high-temperature flue gas；It, can be with by the way that the spoiler being interspersed in parallel is just arranged on the burner Increase residence time of the high-temperature flue gas in dual firing chamber 600, extends the burning time of organic matter in high-temperature flue gas, fire it sufficiently It burns, to further increase efficiency of combustion, preventing imperfect combustion large dust particle to be deposited on exhanst gas outlet 610 goes out flue gas Mouth 610 blocks.

3. the sludge residue that the utility model is facilitated after burning by the way that stock guide 650 is arranged is fallen from the kiln tail of kiln body 500 Enter ash bucket 640, residue is prevented to be blocked in kiln tail, influences the working efficiency of kiln body 500.

It is understood that being merely to illustrate the utility model above with respect to the specific descriptions of the utility model and not being It is limited to technical solution described in the utility model embodiment.Those skilled in the art should understand that still can be with It modifies to the utility model or equivalent replacement, to reach identical technical effect；Needs are used as long as meeting, all in this reality Within novel protection scope.

Claims (7)

1. a kind of sludge incineration rotary kiln, including supporting table, feeding device, kiln body and dual firing chamber are successively arranged in supporting table；Its It is characterized in that, the feeding device includes the feed hopper being sequentially communicated from top to bottom, vertical hopper and horizontal hopper, feed hopper bottom Portion is equipped with turnover door, and horizontal hopper is equipped with far from the side of kiln body feed inlet for sludge to be pushed into kiln body pusher, horizontal Hopper is equipped with overhead door, turnover door and overhead door by hydraulic drive close to the side of kiln body feed inlet, when charging, turnover door and Overhead door is alternately opened and closed；The kiln body rotational installation is driven by driving device and is rotated on the supporting arrangement for being located at kiln body both ends, It is equipped with kiln head cover at the kiln hood of kiln body, primary combustion device and blast pipe are installed on kiln head cover, burner spray canister and blast pipe are equal It protrudes into kiln body；The kiln body is tubular structure, and kiln body is along axial horizontally disposed, the inner wall fitting setting refractory material of kiln body Layer, refractory material layer uniformly increase along axial direction from the kiln tail of kiln body to kiln hood thickness；The dual firing chamber is connected with the kiln tail of kiln body It is logical；The top of the dual firing chamber is equipped with exhanst gas outlet, and exhanst gas outlet is connected by pipeline with exhaust gas processing device, dual firing chamber's side wall It is equipped with secondary burner and air inlet, secondary burner is located above air inlet, and air inlet is located above kiln body, dual firing chamber bottom Portion is equipped with ash bucket；Several spoilers are equipped in the dual firing chamber, spoiler is located above secondary burner, and spoiler includes left resistance Flowing plate and right spoiler, left spoiler and right spoiler are located on the inner wall of dual firing chamber's axis two sides, left spoiler and the right side Spoiler is staggered in parallel in the longitudinal direction, and the right end of left spoiler is located at the right of right spoiler left end.

2. sludge incineration rotary kiln as described in claim 1, which is characterized in that the refractory material layer far from kiln body wall one Gradient between end face and horizontal direction is 4%~5%.

3. sludge incineration rotary kiln as described in claim 1, which is characterized in that the air inlet is along the tangential cloth in dual firing chamber periphery It sets.

4. sludge incineration rotary kiln as described in claim 1, which is characterized in that the kiln tail junction of the ash bucket and kiln body is set There is stock guide diagonally downward.

5. the sludge incineration rotary kiln as described in Claims 1-4 is any, which is characterized in that the tapered setting of feed hopper.

6. the sludge incineration rotary kiln as described in Claims 1-4 is any, which is characterized in that the pusher includes pusher Plate and charging ram, scraping wings are connected on charging ram, and charging ram is hydraulic stem, are hydraulically operated horizontal reciprocating movement.

7. the sludge incineration rotary kiln as described in Claims 1-4 is any, which is characterized in that the driving device includes annular Drive rack and servo motor, annular drive rack are fixedly mounted on outer wall in the middle part of kiln body, annular drive rack and servo motor It is connected, is driven and rotated by servo motor.