CN113654048A

CN113654048A - Waste incineration system

Info

Publication number: CN113654048A
Application number: CN202110998645.9A
Authority: CN
Inventors: 李宇航; 周广钦; 方顺利; 王志超; 姚伟; 贾子秀; 张喜来; 杜智华
Original assignee: Xian Thermal Power Research Institute Co Ltd
Current assignee: Xian Thermal Power Research Institute Co Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2021-11-16

Abstract

The invention discloses a waste incineration system which comprises a waste combustion furnace, a coal-fired boiler, a blower and a charging barrel, wherein the waste combustion furnace is communicated with the coal-fired boiler through a flue; a garbage feeding barrel is arranged on the right side of the furnace body, a valve is arranged on the garbage feeding barrel, a screw rod is arranged in the garbage feeding barrel, a driving mechanism is arranged in the axial direction of the screw rod, and a garbage combustion furnace is connected to a discharge port; the air inlet pipe is communicated with the air outlet of the air blower, smoke generated after waste incineration enters the coal-fired boiler through the flue to be fully combusted to release heat, emission of toxic and harmful smoke can be reduced, partial fuel can be provided for the coal-fired boiler to replace fire coal, energy is saved, and the air inlet pipe can be widely applied to the technical field of waste incineration.

Description

Waste incineration system

Technical Field

The invention belongs to the field of waste incineration, and particularly relates to a waste incineration system.

Background

The quantity of industrial and domestic garbage is huge, if no good treatment method is adopted, the garbage is inevitably stacked, the living environment is influenced, the traditional garbage treatment mode comprises burying, burning and the like, because the burying causes secondary pollution to soil, the burying mode is more and more stopped, the burning mode can differentiate various types of garbage into ash and kill harmful microorganisms in the garbage, but the existing garbage is usually treated by burning, the pollution is high, and the garbage is not fully burnt, so that the energy waste is caused.

Disclosure of Invention

The invention provides a waste incineration system for overcoming the defects in the prior art, wherein when the waste incineration system is used for incinerating waste, flue gas generated in the waste incineration process enters a coal-fired boiler through a flue to be fully combusted to release heat, so that the emission of toxic and harmful flue gas can be reduced, partial fuel can be provided for the coal-fired boiler to replace fire coal, and the energy is saved.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a waste incineration system comprises a waste combustion furnace, a coal-fired boiler, an air blower and a feeding barrel;

the garbage combustion furnace is communicated with the coal-fired boiler through a flue, a furnace arch is arranged in the coal-fired boiler, an air inlet pipe is laid on the furnace arch and communicated with an air outlet of the air blower, a feeding port and a discharging port are formed in the feeding barrel, a valve is arranged on the feeding barrel, a screw rod is arranged in the feeding barrel, a driving mechanism is arranged in the axial direction of the screw rod, and the discharging port is connected with the garbage combustion furnace.

The invention has the further improvement that the two ends of the coal-fired boiler are respectively a furnace end and a furnace tail, the furnace arch comprises a front arch and a rear arch, the front arch is close to the furnace end, the rear arch is close to the furnace tail, and the flue passes through the furnace tail and is communicated to the lower part of the rear arch.

The invention has the further improvement that the air conditioner also comprises an air inlet main pipe, wherein the air inlet pipe is communicated with the air inlet main pipe, and the air inlet main pipe is communicated with an air outlet of the blower.

The invention has the further improvement that the number of the air inlet pipes is at least two, all the air inlet pipes are uniformly laid on the front arch, and all the air inlet pipes penetrate out of the furnace end and are communicated with the air inlet main pipe.

The invention is further improved in that the outside of the part of the air inlet pipe on the front arch is cast with refractory concrete;

the air inlet pipe is made of steel material;

the number of the air inlet pipes is at least two, all the air inlet pipes are uniformly laid on the rear arch, the air inlet pipes extend to the furnace end in the coal-fired boiler, and all the air inlet pipes penetrate through the furnace tail and are communicated with the air inlet main pipe;

and refractory concrete is cast on the outer side of the part of the air inlet pipe, which is positioned on the rear arch.

In a further development of the invention, the air inlet tube is made of a plastic material.

The invention is further improved in that the pipeline of the air inlet main pipe is also provided with an air volume regulating valve.

The invention is further improved in that a plurality of vibration mechanisms are arranged in the screw rod, and the material conveying direction of the material inlet cylinder and the horizontal plane form an included angle and are arranged upwards.

The invention further improves the technical scheme that a liquid collecting mechanism is arranged at the bottom of the charging barrel and is a liquid collecting bottle communicated with the charging barrel.

The invention is further improved in that the number of the vibration mechanisms is between 6 and 8, and the vibration mechanisms are uniformly embedded in the shaft of the screw rod.

Compared with the prior art, the invention has at least the following beneficial technical effects:

1. the garbage incineration system is simple in structure and low in modification cost, after the household garbage is put into the garbage combustion furnace, smoke generated by incomplete combustion is introduced into the coal-fired boiler, air is introduced into the air inlet pipe and is fully mixed with the smoke for combustion, and toxic and harmful gases generated during garbage incineration can be effectively reduced.

2. The waste combustion furnace of the waste incineration system can completely combust and decompose the flue gas generated by insufficient combustion in the waste combustion furnace in the coal-fired boiler, can replace part of fire coal, and achieves the effect of saving energy.

3. According to the garbage incineration system, the air inlet pipe is laid on the furnace arch, the temperature of the furnace arch is high, air in the air inlet pipe can be preheated, the furnace arch can be cooled in the air inlet pipe, and the service life of the furnace arch is prolonged.

4. According to the waste incineration system, the spiral rod is arranged for conveying the waste, so that the waste conveying speed is increased; the transportation of hob makes rubbish concentrate more, and rubbish burning is more abundant.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.

The embodiment provides a waste incineration system, as shown in fig. 1, comprising a waste combustion furnace, a coal-fired boiler, a blower and a charging barrel, wherein the waste combustion furnace 1 is built by refractory materials, waste is combusted in the waste combustion furnace 1, because the waste has complex components and poor combustion stability, dense smoke and toxic and harmful gases are easily generated, smoke generated by combustion in the waste combustion furnace 1 enters the coal-fired boiler 2 through a flue 4, an air inlet pipe 6 is laid on an arch 5 of the coal-fired boiler 2, an air outlet of the blower 3 is communicated with the air inlet pipe 6, the air inlet pipe 6 introduces outside air into the coal-fired boiler 2 to be fully mixed with the smoke introduced into the coal-fired boiler 2 by the flue 4, so that the smoke is thoroughly combusted and decomposed, heat released by smoke combustion supplies heat to the coal-fired boiler 2, the charging barrel 9 is provided with a charging port 13 and a discharging port, the garbage feeding device is characterized in that a valve 14 is arranged on the feeding barrel 9, a screw rod 10 is arranged in the feeding barrel 9, a driving mechanism 12 is arranged in the axial direction of the screw rod 10, the garbage combustion furnace 1 is connected to the discharging port, garbage enters the feeding barrel 9 through the feeding port 12 when the valve 13 is opened, the garbage contacts the screw rod 10 at the moment, and the screw rod 10 drives the garbage to be transported to the garbage combustion furnace 1 along with the rotation of the screw rod 10. The material conveying direction of the material inlet barrel 12 is set to be upward at an included angle of 30-60 degrees with the horizontal plane, so that moisture in the garbage can flow into the liquid collecting bottle 11, and the water content in the garbage can be further reduced.

Through adopting above-mentioned technical scheme, prevent that rubbish residue from entering into the liquid collecting bottle along with the rivers and influencing catchment.

As a further improvement of this embodiment, the two ends of the coal-fired boiler 2 are respectively a furnace head and a furnace tail, the furnace arch 5 in the coal-fired boiler 2 is divided into a front arch 51 and a rear arch 52, the front arch 51 is close to the furnace head, the rear arch 52 is close to the furnace tail, the flue 4 passes through the furnace body of the coal-fired boiler 2 and extends to the lower part of the rear arch 52, and further, because the side wall of the coal-fired boiler 2 is provided with a cold wall pipe, and the furnace tail of the coal-fired boiler 2 has no cold wall pipe, the arrangement of punching is very easy, and the modification cost is very low. Therefore, the flue 4 penetrates through the furnace tail and is communicated to the lower part of the rear arch 52, and the smoke which is not fully combusted by garbage combustion reaches the hearth of the coal-fired boiler 2 through the flue 4.

As an optional laying mode of the air inlet pipes 6, the number of the air inlet pipes 6 is at least two, all the air inlet pipes 6 are uniformly laid on the front arch 51, the air inlet pipes 6 are steel pipes, refractory concrete is cast on the periphery of the part, on the front arch, of the air inlet pipes 6, when the coal-fired boiler 2 is combusted, the temperature in a hearth is high, the air inlet pipes 6 close to the hearth part may be partially melted, and at the moment, the refractory concrete cast close to the hearth part forms an air duct which is communicated with the unmelted air inlet pipes 6 to enable outside air to be introduced into the hearth of the coal-fired boiler 2.

As a further improvement of this embodiment, all the air inlet pipes 6 penetrate out of the furnace end and then are communicated with the air inlet manifold 7, and the air inlet manifold 7 is communicated with the air outlet of the blower 3.

As a further improvement of this embodiment, the air volume adjusting valve 8 is further disposed on the pipeline of the intake manifold 7.

The waste incineration system of this embodiment is all suitable for the processing to dry wet rubbish, and dry rubbish compression is stored, supplies waste combustion furnace 1 burning as fuel winter, and wet rubbish gets into septic tank fermentation deposit earlier, takes out the silt of septic tank bottom winter, also can regard as the fuel of this waste incineration system after the dehydration.

When the garbage combustion furnace 1 is started, the coal-fired boiler 2 is started firstly, and when the temperature in the hearth of the coal-fired boiler 2 is raised to be in a stable state, the charcoal fire of the coal-fired boiler 2 can be used as the primer of the garbage combustion furnace 1 when the garbage combustion furnace 1 is started. The garbage supply amount of the garbage combustion furnace 1 is gradually increased, the running speed of a grate of the coal-fired boiler 2 is reduced, the ventilation quantity of the air quantity regulating valve 8 is increased, the air input of the coal-fired boiler 2 is increased, smoke generated by garbage combustion is fully combusted in a hearth to replace part of fire coal, and the power of the coal-fired boiler is not reduced. When the use is stopped, it is necessary to stop the supply of garbage to the garbage combustion furnace 1 first, and when the garbage combustion furnace 1 is no longer smoking, the coal-fired boiler 2 is turned off.

This system has the following advantages: 1. simple structure, the transformation is with low costs, after throwing into the refuse combustion furnace with domestic waste, the flue gas that the insufficient combustion produced lets in the coal fired boiler in, the intake pipe lets in air and flue gas intensive mixing burning, the poisonous and harmful gas that produces when can reducing waste incineration effectively. 2. The smoke generated by insufficient combustion in the garbage combustion furnace is thoroughly combusted and decomposed in the coal-fired boiler, and can replace part of fire coal, thereby achieving the effect of saving energy. 3. The upper layer of the furnace arch is provided with the air inlet pipe, the temperature of the furnace arch is very high, the air in the air inlet pipe can be preheated, the furnace arch can be cooled in the air inlet pipe, and the service life of the furnace arch is prolonged. 4. The screw rod is arranged to convey the garbage, so that the garbage conveying speed is improved; the transportation of hob makes rubbish concentrate more, and rubbish burning is more abundant.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste incineration system is characterized by comprising a waste combustion furnace (1), a coal-fired boiler (2), a blower (3) and a feeding barrel (9);

the garbage combustion furnace (1) is communicated with the coal-fired boiler (2) through a flue (4), a furnace arch (5) is arranged in the coal-fired boiler (2), an air inlet pipe (6) is laid on the furnace arch (5), the air inlet pipe (6) is communicated with an air outlet of the air blower (3), a feeding port (13) and a discharging port are arranged on the charging barrel (9), a valve (14) is arranged on the charging barrel (9), a screw rod (10) is arranged in the charging barrel (9), a driving mechanism (12) is arranged in the axial direction of the screw rod (10), and the discharging port is connected with the garbage combustion furnace (1).

2. A waste incineration system according to claim 1, characterised in that the coal fired boiler (2) has a head and a tail at each end, the arches (5) comprising a front arch (51) and a rear arch (52), the front arch (51) being located near the head and the rear arch (52) being located near the tail, the flue (4) passing through the tail to the lower part of the rear arch (52).

3. A waste incineration system according to claim 2, further comprising an air inlet manifold (7), the air inlet pipe (6) being in communication with the air inlet manifold (7), the air inlet manifold (7) being in communication with the air outlet of the blower (3).

4. A waste incineration system according to claim 3, characterised in that the number of the inlet pipes (6) is at least two, all the inlet pipes (6) are laid evenly on the front arch (51), and all the inlet pipes (6) are communicated with the inlet manifold (7) after passing through the burner.

5. A waste incineration system according to claim 4, characterised in that the portion of the inlet pipe (6) above the front arch (51) is cast on its outside with refractory concrete;

the air inlet pipe (6) is made of steel material;

the number of the air inlet pipes (6) is at least two, all the air inlet pipes (6) are uniformly laid on the rear arch (52), the air inlet pipes (6) extend to the furnace end in the coal-fired boiler (2), and all the air inlet pipes (6) penetrate through the furnace tail and are communicated with the air inlet main pipe (7);

and refractory concrete is cast outside the part of the air inlet pipe (6) positioned on the rear arch (52).

6. A waste incineration system according to claim 5, characterised in that the air inlet pipe (6) is made of a plastic material.

7. A waste incineration system according to claim 2, characterised in that the pipes of the inlet manifold (7) are also provided with air volume regulating valves (8).

8. A waste incineration system according to claim 1, characterised in that a number of vibration mechanisms (15) are arranged in the screw rod (10), the direction of transport of the charging barrel (9) being arranged upwards at an angle to the horizontal.

9. A waste incineration system according to claim 1, characterised in that the bottom of the inlet barrel (9) is provided with a liquid collecting mechanism, which is a liquid collecting bottle (11) communicating with the inlet barrel (9).

10. A waste incineration system according to claim 1, characterised in that the number of said vibration means (15) is between 6 and 8, said vibration means (15) being uniformly embedded inside the shaft of said screw (10).