CN213357292U

CN213357292U - Municipal sludge pyrolysis device

Info

Publication number: CN213357292U
Application number: CN202022069153.5U
Authority: CN
Inventors: 陈悦明; 黄灿丽; 陈敏纯
Original assignee: Shenzhen Yuepeng Construction Engineering Co ltd
Current assignee: Shenzhen Yuepeng Construction Engineering Co ltd
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2021-06-04
Anticipated expiration: 2030-09-19

Abstract

The application relates to a municipal sludge pyrolysis device, and belongs to the technical field of sludge pyrolysis. It includes the furnace body, locates the pyrolysis reaction pipe of furnace body and with the screw conveyer that the pyrolysis reaction union coupling, the furnace body include the one-level combustion chamber, be located one-level combustion chamber top and with the pyrolysis chamber that the one-level combustion chamber is linked together, be located the pyrolysis chamber top and with the second grade combustion chamber that the pyrolysis chamber is linked together and with the preheating chamber that the second grade combustion chamber is linked together, the pyrolysis reaction pipe is worn to locate the pyrolysis chamber, screw conveyer is worn to locate in the preheating chamber. Pyrolysis gas from the pyrolysis reaction pipe is burnt and purified in the secondary combustion chamber, the secondary combustion chamber is communicated with the preheating chamber, heat from the secondary combustion chamber enters the preheating chamber, sludge in the screw conveyor is heated, the sludge is preheated in advance, the temperature of the sludge entering the pyrolysis reaction pipe is increased, and heat waste is reduced.

Description

Municipal sludge pyrolysis device

Technical Field

The application relates to the technical field of sludge pyrolysis, in particular to a municipal sludge pyrolysis device.

Background

The existing sludge treatment mode is usually landfill or incineration, a large amount of land needs to be occupied due to landfill, and the land after landfill is polluted greatly, so that land resource waste caused by landfill is serious, incineration treatment is a thorough solution to sludge at present, and the moisture content of the sludge is low after the sludge is dried so as to reach the ignition point quickly.

The utility model discloses a chinese utility model patent that the publication number is CN206244626U discloses a mud pyrolysis device, including furnace body and pyrolytic reaction pipe, the furnace body includes a combustion chamber, pyrolytic reaction pipe axial runs through a combustion chamber, pyrolytic reaction pipe's axial one end is equipped with the feed inlet, the axial other end is equipped with the discharge gate, the official intracavity of pyrolytic reaction pipe is equipped with the screw propeller who is used for propelling mummification mud to the discharge gate from the feed inlet, set up a plurality of pyrolysis gas vents on pyrolytic reaction pipe's the pipe wall in order to discharge pyrolysis gas into a combustion chamber, still install one-level burner on the furnace body in order to ignite pyrolysis gas in a combustion chamber.

Aiming at the related technology, the toxic gas is combusted in the secondary combustion chamber and then discharged from the smoke gas outlet, but the gas discharged from the smoke gas outlet still has certain heat and is directly discharged to cause heat loss and waste.

SUMMERY OF THE UTILITY MODEL

In order to reduce thermal waste, the application provides a municipal sludge pyrolysis device.

The application provides a municipal sludge pyrolysis device adopts following technical scheme:

the utility model provides a municipal administration mud pyrolysis device, includes the furnace body, locates the pyrolysis reaction pipe of furnace body and with the screw conveyer that the pyrolysis reaction union coupling, the furnace body includes the one-level combustion chamber, be located the pyrolysis chamber that one-level combustion chamber top and be linked together with the one-level combustion chamber, be located the pyrolysis chamber top and with the second grade combustion chamber that the pyrolysis chamber is linked together and with the preheating chamber that the second grade combustion chamber is linked together, the pyrolysis reaction pipe is worn to locate the pyrolysis chamber, screw conveyer wears to locate in the preheating chamber, the vent has been seted up to the preheating chamber.

Through adopting above-mentioned technical scheme, screw conveyer gives pyrolysis reaction tube transported substance, when the pyrolysis device used, the heat of one-level combustion chamber was carried and is given the pyrolysis chamber, give the heating of pyrolysis reaction tube in the pyrolysis chamber, make the mud drying in the pyrolysis reaction tube, the pyrolysis gas of coming out from the pyrolysis reaction tube, be purified by the burning at the second grade combustion chamber, and the second grade combustion chamber is linked together with the preheating chamber, make the heat that comes out from the second grade combustion chamber get into in the preheating chamber, mud is heated in the screw conveyer, make mud preheated in advance, improve the temperature when mud gets into in the pyrolysis reaction tube, reduce thermal waste.

Preferably, the preheating chamber is communicated with the secondary combustion chamber through a heat transfer pipeline.

By adopting the technical scheme, the heat coming out of the secondary combustion chamber enters the heat transmission pipeline and enters the preheating chamber through the transmission of the heat transmission pipeline, so that the secondary combustion chamber is communicated with the preheating chamber.

Preferably, the inlet of the heat transfer pipe is located at the top of the secondary combustion chamber.

By adopting the technical scheme, the hot gas generally floats upwards, and the inlet of the heat transmission pipeline is positioned at the top of the secondary combustion chamber, so that the heat of the secondary combustion chamber enters the heat transmission pipeline as much as possible.

Preferably, the outlet of the heat transfer pipeline is positioned at the bottom of the preheating chamber.

Through adopting above-mentioned technical scheme, the export of heat transmission pipeline is located the bottom of preheating chamber, and the heat that comes out from heat transmission pipeline gets into preheating chamber from preheating chamber's bottom in, and the heat rises in preheating chamber, makes the heat distribute in preheating chamber to make all heated of screw conveyer in preheating chamber.

Preferably, the screw conveyor is disposed obliquely downward toward the pyrolysis reaction tube.

Through adopting above-mentioned technical scheme, because the heat transmission pipeline is located the bottom of preheating chamber, and screw conveyer sets up downwards to pyrolysis reaction pipe slope, make the one end that the heat transmission pipeline got into the preheating chamber be close to pyrolysis reaction pipe setting, the temperature is the highest when heat just got into preheating chamber in the heat transmission pipeline, make screw conveyer be close to pyrolysis reaction pipe one end temperature highest, and in the mud of this end got into pyrolysis reaction pipe earlier, the temperature that makes mud before getting into pyrolysis reaction pipe reached preheating chamber's highest temperature.

Preferably, the heat transfer duct passes through the pyrolysis chamber.

By adopting the technical scheme, the temperature in the pyrolysis chamber is higher, the heat transmission pipeline penetrates through the pyrolysis chamber, the emission of heat in the heat transmission pipeline is reduced, and the heat in the pyrolysis chamber can also heat the heat transmission pipeline, so that the temperature in the heat transmission pipeline is higher.

Preferably, the preheating chamber is narrower in the middle.

Through adopting above-mentioned technical scheme, the air that has heat in the heat transmission pipeline flows into in the preheating chamber from the bottom of preheating chamber, because the middle part of preheating chamber is narrower, and the velocity of flow is very fast when the air flows in the preheating chamber middle part, and according to Bernoulli's principle, the place that air velocity is big, and pressure is little for the air of bottom is pressed to the middle part of preheating chamber, thereby makes the holistic air velocity of preheating chamber very fast.

Preferably, the vent is opened at the top of the preheating chamber.

Through adopting above-mentioned technical scheme, the air that gets into from preheating chamber bottom flows out from the vent at top to accelerate the flow velocity of preheating indoor air.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the screw conveyer conveys materials to the pyrolysis reaction tube, when the pyrolysis device is used, heat of the primary combustion chamber is conveyed to the pyrolysis chamber, the pyrolysis reaction tube in the pyrolysis chamber is heated, sludge in the pyrolysis reaction tube is dried, pyrolysis gas coming out of the pyrolysis reaction tube is combusted and purified in the secondary combustion chamber, the secondary combustion chamber is communicated with the preheating chamber, heat coming out of the secondary combustion chamber enters the preheating chamber, the sludge in the screw conveyer is heated, the sludge is preheated in advance, the temperature of the sludge entering the pyrolysis reaction tube is increased, and waste of heat is reduced;

2. the air with heat in the heat transmission pipeline flows into the preheating chamber from the bottom of the preheating chamber, the flow speed is high when the air flows in the middle of the preheating chamber due to the narrow middle part of the preheating chamber, and the pressure is low when the air flow speed is high according to the Bernoulli principle, so that the air at the bottom is pressed to the middle part of the preheating chamber, and the air flow speed of the whole preheating chamber is high;

3. because the heat transmission pipeline is located the bottom of preheating chamber, and screw conveyer sets up to pyrolysis reaction pipe slope downwards for the one end that the heat transmission pipeline got into the preheating chamber is close to pyrolysis reaction pipe setting, and the temperature was the highest when heat just got into in the preheating chamber in the heat transmission pipeline, makes screw conveyer be close to pyrolysis reaction pipe one end temperature highest, and in the mud of this end got into pyrolysis reaction pipe earlier, the temperature that makes mud before getting into pyrolysis reaction pipe reached the highest temperature in the preheating chamber.

Drawings

FIG. 1 is a front view of a pyrolysis apparatus of an embodiment of the present application.

FIG. 2 is a side view of a pyrolysis apparatus of an embodiment of the present application.

Description of reference numerals: 1. a furnace body; 11. a primary combustion chamber; 12. a pyrolysis chamber; 13. a secondary combustion chamber; 14. a preheating chamber; 15. a heat transfer pipeline; 16. a vent; 2. a pyrolysis reaction tube; 3. a screw conveyor.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses municipal sludge pyrolysis device.

Referring to fig. 1 and 2, the pyrolysis apparatus includes a furnace body 1, a pyrolysis reaction tube 2 disposed in the furnace body 1, and a screw conveyor 3 connected to the pyrolysis reaction tube 2, the screw conveyor 3 conveys sludge to the pyrolysis reaction tube 2, and the furnace body 1 heats sludge in the pyrolysis reaction tube 2, so that the sludge is heated and easily decomposed.

The furnace body 1 is made by fire-resistant heat preservation material, and furnace body 1 includes one-level combustion chamber 11, is located 11 tops of one-level combustion chamber and the pyrolysis chamber 12 that is linked together with one-level combustion chamber 11, is located pyrolysis chamber 12 tops and the second grade combustion chamber 13 that is linked together with pyrolysis chamber 12 and the preheating chamber 14 that is linked together with second grade combustion chamber 13, and one-level combustion chamber 11 is provided with burner, is the heating of one-level combustion chamber 11 through burner.

Pyrolysis reaction pipe 2 wears to locate pyrolysis chamber 12, has the transport assembly who transports mud along the extending direction of pyrolysis reaction pipe 2 in pyrolysis reaction pipe 2, and transport assembly's transport mode is the same with screw conveyer 3's transport mode, and pyrolysis reaction pipe 2's both ends are connected with pyrolysis chamber 12 lateral wall respectively, and pyrolysis reaction pipe 2 is kept away from screw conveyer 3's one end and is worn out pyrolysis chamber 12, and this end is connected with the holding vessel (not shown in the figure).

The heat in the primary combustion chamber 11 moves upward and enters the pyrolysis chamber 12, thereby heating the sludge in the pyrolysis reaction tube 2.

The second grade combustion chamber 13 is located the top of pyrolysis chamber 12, and second grade combustion chamber 13 is provided with burner, is the heating of second grade combustion chamber 13 through burner, and the toxic gas in pyrolysis chamber 12 gets into second grade combustion chamber 13 and is heated the burning, makes toxic gas become nontoxic.

The heat of the secondary combustion chamber 13 enters the preheating chamber 14 through a heat transmission pipeline 15, the heat transmission pipeline 15 is made of heat-resistant materials, one end of the heat transmission pipeline 15 is connected with the top of the secondary combustion chamber 13, the other end of the heat transmission pipeline is connected with the bottom of the preheating chamber 14, the heat transmission pipeline 15 penetrates through the pyrolysis chamber 12, and the heat in the heat transmission pipeline 15 is kept warm through the temperature in the pyrolysis chamber 12.

Screw conveyer 3 wears to locate in preheating chamber 14, and screw conveyer 3 sets up to the slope of pyrolysis reaction pipe 2 downwards, make screw conveyer 3 carry the material for pyrolysis reaction pipe 2 better sooner, and simultaneously, the temperature is the highest when the heat just got into in preheating chamber 14 in the heat transmission pipeline 15, make screw conveyer 3 be close to the one end temperature of pyrolysis reaction pipe 2 the highest, and the mud of this end gets into in pyrolysis reaction pipe 2 earlier, the temperature that makes mud get into before the pyrolysis reaction pipe 2 reaches the highest temperature in preheating chamber 14.

The top of the preheating chamber 14 is provided with a vent 16, the middle part in the preheating chamber 14 is narrow, so that two ends of the preheating chamber 14 are wide, heat enters the preheating chamber 14 from the bottom of the preheating chamber 14 and flows out from the vent 16 at the top, and the heat can accelerate the flowing speed after passing through the narrow middle area, so that the whole heat circulation in the preheating chamber 14 is accelerated, and the screw conveyor 3 is continuously heated.

The implementation principle of the municipal sludge pyrolysis device in the embodiment of the application is as follows: when the pyrolysis device uses, screw conveyer 3 provides the material for pyrolysis reaction pipe 2, and one-level combustion chamber 11 all heats through burner with second grade combustion chamber 13, and the mud of pyrolysis reaction pipe 2 is by the pyrolysis, and the heat in the second grade combustion chamber 13 gets into preheating chamber 14 in through heat transmission pipeline 15 for screw conveyer 3's mud is preheated.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a municipal sludge pyrolysis device which characterized in that: including furnace body (1), locate pyrolysis reaction pipe (2) in furnace body (1) and with screw conveyer (3) that pyrolysis reaction pipe (2) are connected, furnace body (1) include one-level combustion chamber (11), be located one-level combustion chamber (11) top and with pyrolysis chamber (12) that one-level combustion chamber (11) are linked together, be located pyrolysis chamber (12) top and with second grade combustion chamber (13) that pyrolysis chamber (12) are linked together and with preheating chamber (14) that second grade combustion chamber (13) are linked together, pyrolysis reaction pipe (2) are worn to locate pyrolysis chamber (12), screw conveyer (3) are worn to locate in preheating chamber (14), vent (16) have been seted up in preheating chamber (14).

2. The municipal sludge pyrolysis device of claim 1, wherein: the preheating chamber (14) is communicated with the secondary combustion chamber (13) through a heat transmission pipeline (15).

3. The municipal sludge pyrolysis device of claim 2, wherein: the inlet of the heat transfer pipeline (15) is positioned at the top of the secondary combustion chamber (13).

4. The municipal sludge pyrolysis device of claim 2, wherein: the outlet of the heat transfer pipeline (15) is positioned at the bottom of the preheating chamber (14).

5. The municipal sludge pyrolysis device of claim 1, wherein: the spiral conveyor (3) is obliquely arranged downwards towards the pyrolysis reaction tube (2).

6. The municipal sludge pyrolysis device of claim 2, wherein: the heat transfer duct (15) passes through the pyrolysis chamber (12).

7. The municipal sludge pyrolysis device of claim 1, wherein: the preheating chamber (14) is narrower in the middle.

8. The municipal sludge pyrolysis device of claim 1, wherein: the ventilation opening (16) is arranged at the top of the preheating chamber (14).