CN217274148U - Cold air heating structure of garbage incinerator - Google Patents

Abstract

The utility model provides a cold air heating structure of a garbage incinerator, which comprises a primary combustion chamber, a secondary combustion chamber and an air supply device for supplying air to the primary combustion chamber and the secondary combustion chamber, wherein burners are arranged in the primary combustion chamber and the secondary combustion chamber, the primary combustion chamber and the secondary combustion chamber are communicated with each other through a pipeline, the air supply device comprises an air preheater and a fan, and supplies combustion-supporting hot air to the primary combustion chamber and the secondary combustion chamber, the utility model not only can rapidly dry the moisture in garbage in the combustion process by supplying the combustion-supporting hot air to the primary combustion chamber and the secondary combustion chamber, improves the temperature in the incinerator body, reduces the oil consumption of the ignition burner when being ignited, achieves the purpose of saving energy, but also can ensure that the garbage is ignited and stably combusted in time, and the garbage is pyrolyzed and gasified in the primary combustion chamber to achieve sufficient combustion, and the discharged smoke reaches the national emission standard, thereby meeting the requirement of environmental protection.

Description

Cold air heating structure of garbage incinerator

Technical Field

The utility model relates to a msw incineration field, especially a waste incinerator cold wind heating structure.

Background

The small garbage incinerator is mainly characterized in that combustible garbage is operated in a totally-enclosed mode, and technologies such as pyrolysis gasification mixed incineration and primary and secondary graded burnout treatment are adopted, so that the content of smoke and dust is lower than the specified emission standard, and secondary pollution is avoided. Referring to fig. 2, in the use process of the conventional garbage incinerator, when garbage is burned in the main combustion chamber, the garbage is ignited and burned by an ignition burner, and cold air is directly fed into the lower part of the incinerator to support combustion. Because the heat value of the garbage is low, the heat value of most of the garbage is only 4000-. However, the requirement of the national standard for waste incineration treatment is that when the fuel is subjected to secondary combustion, high-temperature flue gas must stay for more than 2 seconds at the temperature of not less than 850 ℃, so that the effects of no peculiar smell, no odor and no smoke can be realized, and the requirements of incineration efficiency and destruction removal rate of 99% are met. Therefore, when the combustion is started or normally combusted, various combustion-supporting fuels such as diesel oil and heavy oil are still needed, the oil consumption of the combustor is generally high, especially the oil consumption of a two-stage stable combustion combustor, the lowest fuel oil consumption can reach 50L every day only by an incineration device with the capacity of 1 ton/day, and if the water content of garbage is large or the weather is extreme in winter, the oil consumption of the combustion is far beyond the data.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a waste incinerator cold wind heating structure to solve the problem that proposes in the above-mentioned technical background.

The purpose of the utility model is realized through the following technical scheme:

the cold air heating structure of the garbage incinerator is characterized by comprising a primary combustion chamber, a secondary combustion chamber and an air supply device for supplying air to the primary combustion chamber and the secondary combustion chamber, wherein burners are arranged in the primary combustion chamber and the secondary combustion chamber, the primary combustion chamber and the secondary combustion chamber are communicated with each other through pipelines, and the air supply device is used for supplying combustion-supporting hot air to the primary combustion chamber and the secondary combustion chamber.

In the above-mentioned utility model, it is further, air supply arrangement includes air heater and fan, air heater's the end of advancing the cigarette is through going out tobacco pipe and second grade combustion chamber intercommunication, and air heater's play cigarette end is connected with the discharge flue, the fan passes through cold air duct and air heater's cold wind entry intercommunication, and air heater's hot air exitus passes through hot-blast main and one-level combustion chamber and second grade combustion chamber intercommunication.

In the above utility model, furthermore, the secondary combustion chamber includes preceding combustion area and the postcombustion area that communicates each other, preceding combustion area is through pipeline and primary combustion chamber intercommunication.

In the above utility model, it is further that hot-air pipes includes first hot-air pipes and second hot-air pipes, first hot-air pipes communicates with first combustion chamber, second hot-air pipes includes preceding hot-air pipes and back hot-air pipes, preceding hot-air pipes communicates with preceding combustion space, back hot-air pipes communicates with back combustion space.

In the above-mentioned invention, further, the burner of the second-stage combustion chamber is a stable-combustion burner

The utility model has the advantages that: the utility model discloses in, set up air heater and fan through the export at the second grade combustion chamber, can preheat the combustion-supporting wind who sends into one-level combustion chamber and second grade combustion chamber, not only can be in the moisture in the combustion process rapid draing rubbish, improve the temperature in the furnace body, reduce the oil consumption of ignition combustor when lighting, play the purpose of energy saving, and can guarantee rubbish and in time ignite and the steady combustion, let rubbish pyrolyze and gasification in one-level combustion chamber and reach abundant burning, make the exhaust flue gas reach national emission standard, reach the environmental protection requirement.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic view of a conventional incinerator.

In the figure, 1-a primary combustion chamber, 2-a secondary combustion chamber, 2.1-a front combustion area, 2.2-a rear combustion area, 3-a combustor, 4-an air preheater, 5-a fan, 6-a smoke outlet pipeline, 7-a smoke outlet pipeline, 8-a cold air pipeline, 9-a hot air pipeline, 9.1-a first hot air pipeline, 9.2-a second hot air pipeline, 9.21-a front hot air pipeline and 9.22-a rear hot air pipeline.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Example 1:

a cold air heating structure of a garbage incinerator is shown in the attached figure 1 and comprises a primary combustion chamber 1, a secondary combustion chamber 2 and an air supply device for supplying air to the primary combustion chamber 1 and the secondary combustion chamber 2, wherein burners are arranged in the primary combustion chamber 1 and the secondary combustion chamber 2, the primary combustion chamber 1 and the secondary combustion chamber 2 are communicated with each other through a pipeline, and the air supply device is used for supplying combustion-supporting hot air to the primary combustion chamber 1 and the secondary combustion chamber 2.

Specifically, air supply arrangement includes air heater 4 and fan 5, air heater 4 advances the cigarette end and passes through smoke outlet pipe 6 and 2 intercommunications of second grade combustion chamber, and air heater 4's play cigarette end is connected with discharge flue 7, fan 5 passes through cold air duct 8 and air heater 4's cold wind entry intercommunication, and air heater 4's hot air exitus passes through hot-blast main 9 and communicates with one-level combustion chamber 1 and second grade combustion chamber 2.

The utility model discloses specifically in the course of the work, open combustor 3 of one-level combustion chamber 1 and second grade combustion chamber 2, the rubbish that will wait to burn is put into one-level combustion chamber 1 and is carried out the one-level incineration, flue gas when burning the production passes through the pipeline and gets into second grade combustion chamber 2 after, harmful substance such as two bad reasons that do not burn to the greatest extent in the flue gas continues to burn in second grade combustor 2, flue gas after 2 burning of second grade combustion chamber enters into air heater 4 through going out tobacco pipe way 6, and carry out the heat exchange with the cold wind that fan 5 sent into, the cold wind of sending into is through after the heat exchange combustion-supporting in the hot air duct 9 sends into one-level combustion chamber 1 and second grade combustion chamber 2 again.

More specifically, hot flue gas is introduced into a preheating pipe of the air preheater 4, cold air circulates outside, and the outside cold air exchanges heat with the hot flue gas in the preheating pipe through a pipe wall, so that the cold air can be preheated to a certain temperature, and finally the air with a certain temperature is sent into the lower part of a furnace body of the main combustion chamber to enter the furnace body for combustion supporting.

More specifically, the temperature of the smoke at the outlet of the smoke outlet pipeline 6 is generally about 850 ℃, and the smoke is directly introduced into the preheating pipe of the pipe box of the air preheater 4, the fan 5 introduces normal-temperature cold air outside the pipeline of the pipe box of the air preheater 4, the hot smoke in the preheating pipe of the air preheater 4 can heat the normal-temperature cold air to about 200 ℃, the fan 5 sends the hot air of about 200 ℃ into the primary combustion chamber 1 and the secondary combustion chamber 2, the burner 3 is started to be used temporarily during ignition, the temperature in the furnace can quickly reach about 300 ℃ through the hot air, the combustion efficiency of the garbage in the primary combustion chamber 1 is improved, the burned harmful substances are reduced, the burner 3 in the secondary combustion chamber 2 is also used for supporting combustion through the hot air, and the oil consumption of the burner can be reduced by about 30%.

Example 2:

referring to fig. 1, in the present embodiment, the secondary combustion chamber 2 includes a front combustion area 2.1 and a rear combustion area 2.2 which are communicated with each other, the front combustion area 2.1 is communicated with the primary combustion chamber 1 through a pipeline, preferably, the hot air duct 9 includes a first hot air duct 9.1 and a second hot air duct 9.2, the first hot air duct 9.1 is communicated with the first combustion chamber 1, the second hot air duct 9.2 includes a front hot air duct 9.21 and a rear hot air duct 9.22, the front hot air duct 9.21 is communicated with the front combustion area 2.1, and the rear hot air duct 9.22 is communicated with the rear combustion area 2.2.

In this embodiment, the secondary combustion chamber 2 is set as a front combustion area 2.1 and a rear combustion area 2.2, and the front combustion area 2.1 and the rear combustion area 2.2 are respectively provided with a hot air duct, so that the flue gas can be further combusted in the secondary combustion chamber 2 more thoroughly, harmful substances in the flue gas can be further reduced and discharged from the secondary combustion chamber 2, and as a better scheme, the combustor 3 of the secondary combustion chamber 2 adopts a stable combustion combustor, so that the combustion efficiency of the flue gas in the secondary combustion chamber 2 can be further enhanced.

The above-mentioned embodiments only express the specific implementation manner of the present invention, and the description thereof is specific and detailed, but not to be understood as the limitation of the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (5)

1. The cold air heating structure of the garbage incinerator is characterized by comprising a primary combustion chamber, a secondary combustion chamber and an air supply device for supplying air to the primary combustion chamber and the secondary combustion chamber, wherein burners are arranged in the primary combustion chamber and the secondary combustion chamber, the primary combustion chamber and the secondary combustion chamber are mutually communicated through a pipeline, and the air supply device is used for feeding combustion-supporting hot air into the primary combustion chamber and the secondary combustion chamber.

2. The cold air heating structure of the garbage incinerator as claimed in claim 1, wherein said air supply device includes an air preheater and a fan, the smoke inlet end of said air preheater is connected to the secondary combustion chamber through a smoke outlet pipe, the smoke outlet end of said air preheater is connected to a smoke outlet pipe, said fan is connected to the cold air inlet of said air preheater through a cold air pipe, and the hot air outlet of said air preheater is connected to the primary combustion chamber and the secondary combustion chamber through a hot air pipe.

3. The cold wind heating structure of garbage incinerator according to claim 2 wherein said secondary combustion chamber comprises a front combustion zone and a rear combustion zone communicating with each other, said front combustion zone communicating with said primary combustion chamber through a pipe.

4. The cold air heating structure of garbage incinerator according to claim 3 wherein said hot air pipes comprise a first hot air pipe and a second hot air pipe, said first hot air pipe communicating with the first combustion chamber, said second hot air pipe comprising a front hot air pipe and a rear hot air pipe, said front hot air pipe communicating with the front combustion zone, said rear hot air pipe communicating with the rear combustion zone.

5. The cold air heating structure of garbage incinerator according to claim 1, wherein said burner of secondary combustion chamber is a stable burning burner.

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