KR100743641B1 - Semi-sequential type incinerator system - Google Patents

Abstract

A semi-sequential type incinerator system is provided to improve heat efficiency by blocking an inflow of external air with a door and stabilizing a condition of combustion inside a primary combustion chamber. A semi-sequential type incinerator system includes a primary combustion unit(10), a secondary combustion unit(20), a water cooling type heat exchanger(30), a centrifugal dust collector(40), a semi-dry type reaction tower(50), a back filter(60), a suction tower(70), and a chimney(80). The primary combustion unit includes a primary combustion chamber, an input unit, and a mixing/discharging unit. A mixing/discharging pusher is formed at the mixing/discharging unit of the primary combustion unit, and consists of a pusher which mixes and discharges wastes input into the primary combustion chamber and ashes generated after combustion, and an air blocking unit formed at an upper side of the pusher and having a length which is 3/8~4/8 of a length of the primary combustion chamber.

Description

Semi-continuous incineration system {SEMI-SEQUENTIAL TYPE INCINERATOR SYSTEM}

1 is a block diagram of a semi-continuous incineration system according to the present invention.

2 is a front view showing a primary combustion unit according to the present invention.

Figure 3 is a front view showing the mixing / discharge pusher according to the present invention.

Figure 4 is a front view comparing the length of the air cut-off unit and the primary combustion chamber according to the present invention.

5 is a front view showing another embodiment of the primary combustion chamber according to the present invention.

Figure 6 is a block diagram showing another embodiment of a semi-continuous incineration system according to the present invention.

* Explanation of symbols for main parts of drawing *

10: primary combustion unit 11: primary combustion chamber

11a: input door 11b: discharge door

12: input part 12a: input hopper

12b: Input storage 12c: Input pusher

13 mixing / discharging pusher 13a: pusher

13b: Air block 14: Mixing / discharging pusher chamber

15 mixing / discharging unit 16: discharge storage unit

17: air supply nozzle 20: secondary combustion unit

21: auxiliary burner 30: water-cooled heat exchanger

40: centrifugal dust collector 50: semi-dry reaction tower

60: bag filter 70: adsorption tower

80: chimney 90: air-cooled heat exchanger

100: Semi-burning incineration system

The present invention relates to a semi-continuous incineration system for incineration of waste for a certain period of time, and more particularly, the characteristics of the waste (type of waste, moisture, proportion of flammables, low calorific value, etc.) are active according to various waste incinerations. It is possible to cope with this, and the stable combustion and the number of downtimes of the primary combustion chamber are reduced, and the primary combustion unit is sealed by the input door, the discharge door, and the mixing / exhaust fuser chamber when the operation is stopped. The present invention relates to a semi-continuous incineration system that can reduce the consumption of auxiliary fuel for raising the temperature of the secondary combustion unit, and can increase the convenience of workers and increase work efficiency because the input, discharge and agitation of waste are mechanized. .

In general, the waste incineration system for incineration of waste is used a continuous incineration system that can be burned continuously for 24 hours and a batch-type incineration system that incinerates for 8 hours.

First, the batch incineration system is configured to inject a certain amount of waste in a batch when incinerated once, and then incinerate the waste introduced at once.

The batch-type incineration system is difficult to cope with changes in the properties of waste during incineration of wastes, and it is difficult to control combustion in the secondary gas combustion chamber due to different thermal decomposition rates, thereby increasing the consumption of auxiliary fuel. In addition, the discharge of incineration ash is not easy.

In addition, since the first combustion chamber is cooled after the first batch incineration, the incineration material is removed, and thus, when the waste is burned again, the temperature must be raised to a certain temperature again, resulting in waste of fuel, working time, and inconvenience to workers.

The present invention for solving the above problems by reducing the number of operation stops of the incineration facility by mechanizing the process of waste input and stirring, incineration ash discharge, increase the incineration efficiency and the convenience of the operator while increasing the work efficiency The aim is to provide a semi-continuous incineration system that can be achieved.

Another object of the present invention is to block the inflow of external air by the input door even when the waste is continuously introduced in the middle of incineration of the waste, so that the combustion state inside the primary combustion chamber is stable and the thermal efficiency is good. In addition, since it is easy to continuously input and stir the waste by a certain amount, and stable incineration is performed in the primary combustion chamber, it provides a semi-continuous incineration system that can cope actively with the input of various wastes.

Still another object of the present invention is not only to maintain the temperature inside the primary combustion chamber by the air blocker formed in the mixing / discharging pusher of the mixing / discharging unit during the stirring operation of the waste, but also by using the mixing / discharging pusher. Even when the incineration material generated after incineration is removed, the mixing / exhaust pusher chamber is sealed to maintain the temperature of the primary combustion chamber, thereby providing a semi-continuous incineration system that can increase thermal efficiency.

Another object of the present invention is to transfer the latent heat remaining in the noxious gas and dust through the water-cooled heat exchanger to the primary combustion unit to obtain the effect of reducing the fuel, in particular contained in the noxious gas and dust passing through the centrifugal force dust collector After recovering the latent heat from the air-cooled heat exchanger, by supplying the combustion air to the combustion air supply nozzle of the primary combustion chamber, it provides a semi-continuous incineration system that can prevent partial incineration of waste incinerated in the primary combustion chamber.

The semi-continuous incineration system of the present invention for achieving the above object is a primary combustion chamber having an input door on one side and an exhaust door on the other side to incinerate waste in a semi-continuous manner, and in the primary combustion chamber. An input hopper capable of injecting waste and an input storage part configured to accumulate only a predetermined amount of waste supplied from the input hopper, and an input part having an input pusher downward, and formed on one side of the primary combustion chamber and having a primary A mixing / discharging unit having a mixing / discharging pusher for mixing and discharging the waste put into the combustion chamber, and a mixing / discharging unit having a vacuum mixing / discharging pusher chamber at the other side of the primary combustion chamber, and a lower side of the discharge door of the primary combustion chamber. Comprising a primary combustion unit consisting of the discharge storage formed, and provided with an auxiliary burner for burning the unburned gas generated during combustion in the primary combustion unit The secondary combustion unit is configured to recycle the latent heat remaining in the noxious gas and dust that has passed through the secondary combustion unit to the primary combustion chamber of the primary combustion unit to improve thermal efficiency, while reducing the temperature of the noxious gas and dust. Centrifugal force precipitator for first removal of particulate matter of 75㎛ or more included in heat exchanger and noxious gas and acidic gas contained in harmful gas and dust passed through the centrifugal force precipitator using neutralized limestone slurry Semi-dry reaction tower to remove, dry product passed through the semi-dry reaction tower, bag filter formed with a connection duct capable of spraying activated carbon to remove dioxin and harmful gas contained in exhaust gas and various harmful gases passed through the bag filter And the adsorption tower which absorbs and adsorbs odors and discharges the gas which has passed through the adsorption tower using a manned blower. In a semi-continuous waste incineration system including a chimney, the mixing / discharging pusher of the mixing / discharging unit of the primary combustion unit is a pusher and the pusher capable of mixing and discharging waste introduced into the primary combustion chamber and ash generated after combustion. Is formed on the upper side of the air blocking portion is formed in the length of 3/8 to 4/8 of the length of the primary combustion chamber to the configuration.

Hereinafter, with reference to the accompanying drawings will be described in more detail the configuration of the present invention.

Semi-continuous incineration system of the present invention, as shown in Figure 1, the primary combustion unit 10, secondary combustion unit 20, water-cooled heat exchanger 30, centrifugal force dust collector 40, semi-dry reaction tower ( 50), the bag filter 60, the adsorption tower 70, the chimney 80 of the components are connected by a conventional pipe (not shown in the figure) is configured.

First, as shown in FIG. 2, the primary combustion unit 10 includes a primary combustion chamber 11 capable of incinerating waste, an input unit 12 supplying waste to the primary combustion chamber 11, and the primary combustion chamber. After the stirring and incineration of the waste incinerated in the combustion chamber 11 is completed, the mixing / discharging unit 15 for discharging the ash to the discharge storage unit 16.

The primary combustion chamber 11 has an input door 11a which is opened when waste is inserted into one side and closed so that the heat source of the primary combustion chamber 11 does not flow out when the waste is inserted. When all the waste in the primary combustion chamber 11 is incinerated to ash, it consists of an exhaust door (11b) that is opened and closed to discharge the incineration ash to the discharge storage unit 16 formed on the outside, a conventional fuel tank (not shown in the figure) And an ignition device (not shown) for heating the primary combustion chamber 11 with fuel supplied thereto.

Here, the input door 11a and the discharge door 11b may be formed in various forms such as a hydraulic method, a crane method, or a pneumatic method.

In addition, the input unit 12 has an input hopper 12a through which the waste can be injected into the primary combustion chamber 11, and the primary combustion chamber always has a certain amount of waste introduced into the input hopper 12a. An input storage unit 12b is formed to have a predetermined size so that it can be introduced into the (11), and the input pusher 12c for introducing the waste introduced into the input storage unit 12b into the primary combustion chamber 11. consist of.

In addition, the mixing / discharging unit 15 agitates the waste introduced into the primary combustion chamber 11 and completely burns the ash remaining through the discharge door 11a of the primary combustion chamber 11 to discharge the storage unit 16. And a mixing / discharging pusher chamber (14) having a mixing / discharging pusher (13) capable of discharging into the discharging chamber, and capable of staying when the mixing / discharging pusher (13) is not in operation and maintaining a closed state. Doing.

Here, the mixing / discharging pusher 13 of the mixing / discharging unit 15 discharges ash remaining after the stirring operation of the waste introduced into the primary combustion chamber 11 and incineration of the waste, as shown in FIGS. 3 to 4. The air blocker is formed above the pusher 13a and the pusher 13a and is formed so as not to discharge the heat source of the primary combustion chamber 11 when the mixing / discharging pusher 13 operates. 13b), and the length d1 of the air blocking part 13b is formed by 3/8 to 4/8 of the length d2 of the primary combustion chamber 11 to use the mixing / discharging pusher 13. When the stirring operation is performed, it is configured so that air does not flow into the primary combustion chamber 11 from the outside.

On the other hand, the secondary combustion unit 20 is a conventional fuel tank (shown in the drawing) so as to incinerate the unburned gas generated when the waste incineration in the primary combustion chamber 11 of the primary combustion unit 10 once again. And an auxiliary burner 21 for heating the secondary combustion unit 20 using fuel supplied from the same.

In the secondary combustion unit 20 having the auxiliary burner 21, the unburned gas generated during incineration in the primary combustion chamber 11 of the primary combustion unit 10 can stay for at least 1 second. The unburned gas is burned using the auxiliary burner 21.

In addition, the water-cooled heat exchanger 30 may recycle latent heat remaining in the noxious gas generated after burning unburned gas in the secondary combustion unit 20 to the primary combustion chamber 11 of the primary combustion unit 10. A pipe a1 can be provided, and the temperature of the noxious gas can be drastically reduced while increasing the thermal efficiency of the primary combustion chamber 11 of the primary combustion unit 10.

In addition, the centrifugal force dust collector 40 is provided to collect dust of 75 μm or more among the harmful gas and dust that have passed through the water-cooled heat exchanger 30.

The principle of the centrifugal force dust collecting device 40 is a general configuration, by applying a cyclone inlet or a blade to the incoming harmful gas to form a downward movement, the dust particles contained in the harmful gas to obtain a centrifugal force to escape the swirl flow The fine particles that collide with the inner wall of the main body and are deposited and dropped may be collected.

In addition, the semi-dry reaction tower 50 is configured to neutralize the harmful gas and dust acid gas passed through the centrifugal force dust collector using the lime lime slurry to remove harmful substances.

In addition, the bag filter 60 is a venturi tube-type connection duct capable of spraying activated carbon to remove dioxin and harmful gas contained in the dry product passed through the semi-dry reaction tower 50 and the exhaust gas (not shown in the drawing). ).

On the other hand, the adsorption tower 70 is configured to discharge the gas passing through the bag filter 60 to the chimney 80 by using a manned blower.

Here, the bottom surface and the outer wall of the primary combustion chamber 11 formed in the primary combustion unit 10 is further provided with a bolt-type combustion air supply nozzle 17 of a high carbon steel material, as shown in FIG. As shown in FIG. 6, an air-cooled heat exchanger 90 is further provided between the centrifugal dust collector 40 and the semi-dry reaction tower 50 to recycle the latent heat of noxious gas and dust through the pipeline a2. When the waste is incinerated in the combustion chamber 11, latent heat may be sprayed through the combustion air supply nozzle 17 to prevent the waste from being partially incinerated.

A preferred embodiment of the semi-continuous incineration system of the present invention having the configuration as described above will be described.

First, when the power is applied to the semi-continuous incineration system 100 of the present invention, each component is operated.

Then, when the waste is injected into the input hopper 12a of the input unit 12 formed in the primary combustion unit 10, the waste into the input storage unit 12b formed below the input hopper 12a. This builds up.

On the other hand, an input door formed on one side of the primary combustion chamber 11 in a state where the primary combustion chamber 11 of the primary combustion unit 10 is preheated by an ignition device (not shown in the drawing) by applying power. At the same time as 11a is opened, the waste pusher 12c of the feeder 12 is pushed into the primary combustion chamber 11 and put into the primary combustion chamber 11 for a predetermined time. The waste introduced into the primary combustion chamber 11 is incinerated and continuously mixed with the mixed / discharge pusher 13 according to the properties of the waste. To increase.

 In addition, the mixing / discharging pusher 13 of the mixing / discharging unit 15 for stirring the above-described waste is composed of a pusher (13a) and the air blocking unit (13b) to move the waste, wherein, In order to prevent the heat source of the primary combustion chamber 11 from moving to the mixing / exhaust pusher chamber 14 by the operation of the pusher 13a, an air shutoff portion 13b is formed to seal the air. It is possible to prevent the phenomenon that the heat source that may occur in the primary combustion chamber 11 leaks to the outside at the moment the work is made.

Since the length d1 of the air interrupter 13b is formed to be 3/8 to 4/8 of the length d2 of the primary combustion chamber 11, the mixing / discharging pusher 13 is removed. Even if the waste is transported by using the agitating operation unless the waste is discharged to the outside, the waste can be sufficiently removed and the air can be blocked.

On the other hand, when the waste in the primary combustion chamber 11 is incinerated by the above-described action, the mixing / discharging of the mixing / discharging portion 15 in the state in which the discharge door 11b formed in the first combustion chamber 11 is opened. The pusher 13 is used to move the incineration ash to the discharge storage 16.

At this time, the mixing / discharge pusher 13 in the above process is moved by the length (d2) of the primary combustion chamber (11) in order to discharge all the incineration ash to the discharge storage unit 16, at this time mixing / discharge pusher ( 14) and the primary combustion chamber 11 is not blocked, but in the present invention, by keeping the mixing / discharge pusher chamber 14 as closed as possible, the primary combustion chamber 11 by the flow of air It is configured so as not to lower the preheated temperature of).

As the incineration is carried out, the unburned gas generated from the incinerated waste is moved to the secondary combustion unit 20 through a conventional pipeline.

Then, the unburned gas moved to the secondary combustion unit 20 is configured to incinerate dust again by the auxiliary burner 21 supplied with fuel in a normal fuel tank, and at this time, the secondary combustion unit The unburned gas incinerated again by the auxiliary burner 21 at 20 is normally maintained at 850 to 950 ° C.

On the other hand, while the harmful gas and dust passing through the secondary combustion unit 20 passes through the water-cooled heat exchanger 30 by a normal pipe, the latent heat in the noxious gas and dust, that is, maintained a temperature of 850 ~ 950 ℃ When harmful gas and dust passes through the water-cooled heat exchanger (30), the harmful gas and dust drops to 200 to 250 ° C and is sent to the primary combustion chamber (11) through the pipeline (a1) to improve the thermal efficiency of the primary combustion chamber (11). At the same time, it is possible to drastically lower the temperature of harmful gases and dust.

In addition, the harmful gas and dust passing through the water-cooled heat exchanger (30) is collected by the centrifugal force dust collector which collects fine dust by centrifugal force through a conventional pipe, and dust of more than 75㎛, acidic gas using a slaked lime slurry After passing through the semi-dry reaction tower 50 to neutralize the harmful substances and the bag filter 60 capable of spraying activated carbon, the chimney 80 is removed from the harmful substances by the adsorption tower 70 that adsorbs harmful gases and odors. To be released to the outside.

On the other hand, when there is a possibility of partial incineration of waste in the primary combustion chamber 11, further comprising a bolt-type combustion supply nozzle 17 of high carbon steel on the bottom surface and the outer wall of the primary combustion chamber 11, And, further comprising an air-cooled heat exchanger 90 between the centrifugal force dust collector 40 and the semi-dry reaction tower 50, the air-cooled heat exchanger 90 absorbs the latent heat in the harmful gas and dust, the pipe ( When the air is moved to the combustion supply nozzle 17 installed in the primary combustion chamber 11 through a2) and transferred into the primary combustion chamber 11, the combustion air is disposed in the waste inside the primary combustion chamber 11. It can be applied to heat the waste evenly, so that partial incineration can be blocked early.

Although the above-described embodiments have been described with respect to the most preferred embodiments of the present invention, it is not limited to the above embodiments, and various modifications are possible within the scope without departing from the technical spirit of the present invention. It is evident to those who have knowledge of.

As described above, the semi-continuous incineration system of the present invention mechanizes the process of injecting, stirring, and discharging the incineration material, thereby reducing the number of operation stops of the incineration plant, thereby increasing the incineration efficiency and improving the convenience of the operator. Can increase efficiency.

In addition, even when the waste is continuously injected in the middle of incineration of the waste, the inflow door blocks the inflow of external air, so that the combustion state inside the primary combustion chamber is stable and the thermal efficiency is good. Since it is easy to put in place and stir the waste, stable incineration occurs in the primary combustion chamber, so it can actively cope with the input of various kinds of waste.

In addition, the air blocking unit formed in the mixing / discharging pusher of the mixing / discharging unit during the stirring operation of the waste not only maintains the temperature inside the primary combustion chamber, but also removes the incineration generated after incineration of the waste by using the mixing / discharging pusher. Even when the mixing / exhaust pusher chamber is sealed, it is also possible to maintain the temperature of the primary combustion chamber, thereby increasing the thermal efficiency.

In addition, the latent heat remaining in the noxious gas and dust through the water-cooled heat exchanger can be transferred to the primary combustion unit to obtain a fuel saving effect, and in particular, the latent heat contained in the noxious gas and dust that has passed through the centrifugal force dust collector. After recovering from, by injecting the combustion air into the combustion air supply nozzle of the primary combustion chamber, it is a useful invention that can prevent partial incineration of waste incinerated in the primary combustion chamber.

Claims (5)

In order to incinerate wastes in a semi-continuous manner, a primary combustion chamber having an input door on one side and an exhaust door on the other side, an input hopper for inputting waste into the primary combustion chamber, and waste supplied from the input hopper An input unit having an input storage unit formed to accumulate only a predetermined amount and having an input pusher downward, and a mixing / discharge pusher formed at one side of the primary combustion chamber and mixing and discharging waste injected into the primary combustion chamber; On the other side of the primary combustion chamber, the primary combustion unit comprises a mixing / discharging unit having a mixing / discharging pusher chamber in a vacuum state and an discharge storage unit formed under the discharge door of the primary combustion chamber. And a secondary combustion unit having an auxiliary burner for burning unburned gas generated at combustion, and the harmful gas and dust passing through the secondary combustion unit. The remaining latent heat is recycled to the primary combustion chamber of the primary combustion section to improve thermal efficiency, and to remove particulate matter of 75 µm or more contained in the harmful gas and water-cooled heat exchanger that can drastically reduce the temperature of harmful gases and dust. In the semi-dry reaction tower to remove harmful substances by neutralizing the acid gas contained in the centrifugal dust collector and the harmful gas and dust passed through the centrifugal dust collector by using the lime slurry, and in the dry product and exhaust gas passing through the semi-dry reaction tower. Induced blower is a bag filter that forms a connection duct capable of spraying activated carbon to remove dioxins and harmful gases, and an adsorption tower that absorbs and adsorbs various harmful gases and odors passed through the bag filter, and a gas passed through the adsorption tower. In the semi-continuous waste incineration system including the chimney discharged by using, The mixing / discharging pusher of the mixing / discharging unit formed in the primary combustion unit is formed at the upper side of the pusher and the pusher capable of mixing and discharging waste introduced into the primary combustion chamber and ash generated after combustion, Semi-continuous incineration system characterized by consisting of an air shut-off part formed in the length of 3/8 to 4/8. delete delete delete The method of claim 1, wherein the bottom surface and the outer wall of the primary combustion chamber formed in the primary combustion unit is further provided with a bolt-type combustion air supply nozzle applying a high carbon steel material, between the centrifugal force dust collector and the semi-dry reaction tower A semi-continuous incineration system characterized in that it further forms an air-cooled heat exchanger capable of recovering latent heat remaining in the harmful gas and dust, so that combustion air can be introduced into the combustion air supply nozzle of the primary combustion chamber.

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