KR200229897Y1 - Waste incinerator combustion exhaust gas purification method apparatus. - Google Patents

Abstract

The present invention relates to a method for discharging the combustion gas to the atmosphere after removing the soot (soot) and harmful chemicals (dioxin, etc.) contained in the combustion gas discharged from the waste incineration.

The purpose of the present invention is to remove harmful substances such as soot and dioxin contained in the combustion gas passing through the filter, water, ozone, and water spray, and then discharge them into the atmosphere. It is to protect environmental pollution and the health of local residents.

The present invention for achieving the above object is a water tank, a filter (dry filter), the wet filter (wet filter) water is always wet, combustion gas multi-pipes, centrifugal suction pump, power sprayer, injector, ozone generator , Bubble generator, etc. Among them, a dry filter removes the soot contained in the combustion gas, and the combustion gas passed through the filter is purified by passing through a wet filter where the water is wet again by a centrifugal suction pump. It is then sent through the flue gas multiple tubes into the water stored in the water tank. As the combustion gas passes through water and ozone, the toxic substances contained in the combustion gas are dissolved in water, oxidized by the strong oxidizing power of ozone, and some of the harmful substances are removed by water and ozone. It is oxidized by the strong oxidizing power of spray and ozone produced by the mounted injector, which once again removes harmful substances. Combustion gas from which harmful substances are removed by water, ozone and water spray is sprayed with toxic chemicals by water and ozone and water spray as many times as required. Emissions to the atmosphere. Through the above process, soot and toxic chemicals contained in the combustion gas are removed by filter, water and ozone to prevent environmental pollution.

Description

Waste incinerator combustion exhaust gas purification method device. {.}

Currently, domestic waste incinerators release the combustion gas from incineration to the atmosphere without any filtration, causing environmental pollution, and causing a lot of damage to the workers working at the incinerators and the people around them. For example, Kyodo news agency reported about 40 times more dioxins were found in the blood of workers who worked at a Japanese waste incinerator. The report cited the Labor Department report that 805.8 picograms (one trillion grams) of dioxin was detected in the blood fat of some 92 former garbage incinerator workers. Normal levels of dioxins in the blood are 20-30 picograms. The 15 workers who worked in the most contaminated workplaces of the former incinerator inhaled an average of 60 picograms per kilogram of body weight per day, 15-60 times more than the World Health Organization's daily dioxin inhalation allowance. Dioxin, a toxic chemical from burning garbage, is known to cause cancer and infertility, and there are hundreds of litigation cases involving dioxin in the United States.

The present invention is to remove the soot and harmful chemicals (dioxin, etc.) contained in the combustion gas discharged during incineration of the waste, and to discharge the combustion gas into the atmosphere, the filter (6) and. Centrifugal suction pumps (7, 14), wet wet filter (8), water tank (2), combustion gas multiple pipes (10, 30), water (13 33) and ozone generator (23, 38), bubble generators 25 and 27, power atomizers 9, water chambers 18 and 42, injectors 20, water sprays 21, centrifugal suction pumps 7 and the like. It is characterized by.

Among them, a dry filter 6 removes the soot contained in the combustion gas, and the combustion gas passing through the filter 6 is wetted again by the centrifugal suction pump 7. Water (13) stored in the water tank (2) through the combustion gas multiple pipes (10) is filtered through the combustion gas (8) to filter out harmful chemicals contained in the combustion gas first. Send into

The combustion gas passes through the water 13 and the ozone generated in the ozone generator 23 is discharged from the ozone generator 23 while the harmful substances contained in the combustion gas are dissolved in the water 13 through the bubble generator 25. It oxidizes to the oxidizing power of strong ozone sent to the inner water 13 and to the air above the water surface. Combustion gas dissolved in water (13) and removed to some extent by the strong ozone oxidizing power is again sprayed with water spray (21) and ozone produced by an injector (20) mounted on the upper part of the tank (2). It is oxidized by strong oxidizing power and once again removes harmful chemicals.

Combustion gas from which harmful substances are removed by water spray by water, ozone and injector is harmful chemical by water, ozone and water spray by repeating the first and second times as many times as required. After the odor is removed along with the material to be discharged to the atmosphere through the combustion gas outlet (49).

The filter of the present invention filters soot in the combustion gas, water dissolves harmful chemicals (dioxin, etc.) contained in the combustion gas, and ozone is a toxic chemical contained in the combustion gas (dioxine with strong oxidizing power). Etc.) to remove soot and harmful chemicals contained in the combustion gas.

1 is an overall configuration of the present invention.

[Description of Signs for Main Parts of Drawings]

1. incinerator, 2. 3. water tank, 4. incinerator inlet, 5. flue gas flow line arrow,

6. dry filter, 7. 14. centrifugal suction pump, 8. wet filter,

9. 41. Power sprayer, 10. 30. Combustion gas multi-pipes,

11. 31. Multi-pipe flue gas outlet holes, 12. 32. Flue gas bubbles,

13. 33. water, 15. micro flow control valve, 16. 43. inlet,

17. 44. 29. 36. Valve, 18. 42. Water chamber,

19. 47. Water level line, 20. 45. Injector,

21. 46. water spray, 22. flue gas discharge pipe,

23. 38. ozone generator, 24. 26. 37. 39. ozone ozone hose,

25. 27. 34. 40. Ozone bubble generator, 28. 35. Drainage, 29. 36. Valve,

49. Combustion gas outlets,

Hereinafter, described in detail by the accompanying drawings as follows.

1 is an overall view of the present invention, a filter (6). Centrifugal suction pump (7), wet wet filter (8), water tank (2, 3) flue gas discharge pipes (10, 30), flue gas multiple pipes (11, 31) 13, 33), power sprayer (9, 41) injector (20, 45,), water spray (21, 46), centrifugal suction pump (7, 14), ozone generator (23, 28), bubble generator (25, 27, 34, 40), and the like.

The roles and functions of each part in the process of removing harmful substances in the combustion gas are as follows.

When the waste is incinerated through the incinerator inlet 4 in the waste incinerator 1, combustion gas containing soot and harmful chemicals is generated as indicated by the arrow. This combustion gas passes through a dry filter 6 through which only particles having a size of several micrometers or less can pass through the exhaust pipe 22, as indicated by the combustion gas flow line arrow 5, as indicated by the arrow. At this time, the filter 6 collects soot contained in the combustion gas. The soot does not pass through the filter 6 because of its large size and is attached to the filter 6. The combustion gas passing through the filter 6 passes through the wet filter 8 which is wetted again by the centrifugal suction pump 7, and small particles, chemicals, and the like, which are not removed from the filter 6, are separated from the water. Filtered by the filter (8) by the contact of the harmful substances in the combustion gas is removed.

In order to ensure that the filter 8 is always wet, a small flow rate of water is controlled by controlling the micro flow rate control valve 15 through the pipe 48 by the power of the power sprayer 9. To be supplied. The filters 6 and 8 may be replaced at times when the waste is not incinerated, or may be replaced after removing the attached soot. A centrifugal suction pump (7) for sucking combustion gas into the filter (6) and sending it back to the filter (8) and the combustion gas multi-pipes (10) is provided between the filter (6) and the filter (8). Is mounted. By the centrifugal suction pump 7 the combustion gas is sent into the water 13 of the water tank 2 through the multiple pipes 10 at a pressure that can overcome the water pressure in the water tank 2. When the combustion gas passes through the water 13 in the form of bubbles 12, some of the harmful chemicals such as dioxins in the combustion gas are dissolved in the water 13 and generated in the ozone generator 23. As the ozone is oxidized by the strong oxidizing power of ozone generated in the water 13 through the bubble generator 25 as an arrow, the combustion gas is forced into the bubble 12 above the surface of the tank 2 (19). As you come up with it. In this way, some of the harmful chemicals are removed, and the combustion gas that has risen by forming bubbles 12 on the water surface 19 of the water 13 is again generated by the ozone generator 23 through the bubble generator 25. It is oxidized by the strong oxidizing power of ozone that occurs and spreads like an arrow, and the harmful chemical substance is dissolved in water once again by the water spray 21 by an injector 20 installed in the upper part of the tank. ) Does not escape, and remains with the water 13 in the water tank (2).

This is because harmful chemicals contained in the combustion gas passing through the water 13 are sprayed with water, such as unburned hydrocarbons (HC) and nax (NOx) that are discharged from the combustion engine and become acid rain. Once again dissolved by)) and ozone generated in the ozone generator 23 is oxidized to the strong oxidizing power of ozone generated as an arrow through the bubble generator 27 to reduce harmful chemicals that escape from the water tank 2. do. An atomization energy source is required to make a spray 21 using an injector 20. That is, the injector should be supplied with water at a pressure capable of atomizing. To this end, a power sprayer 9 is installed to supply water 13 in the water tank 2 to the chamber 18 by a power of the power sprayer 9 at a constant pressure. The water supplied to the chamber is sprayed through an injector 20 to form a water spray 21.

Therefore, by the water spray 21 by the injector 20 installed in the upper part of the tank, the harmful chemicals are not dissolved in the water of the water spray 21 and cannot exit the tank. Will remain in the water (13).

Hazardous chemicals remaining in the water (13) in the water tank (2) is generated in the ozone generator (23) again and generated in the water (13) like the arrow through the bubble generator 25, the strong oxidizing power of ozone It is oxidized by.

The combustion gas is sent back to the water 33 by the centrifugal suction pump 14 through the combustion gas multiple pipes 30 in the water tank 3 until the harmful substances contained in the combustion gas are removed to a desired level. When the combustion gas passes through the water 33 in the form of bubbles 32, some of the harmful chemicals such as dioxins remaining in the combustion gas are dissolved in the water 33 again, and the ozone generator 38 As the generated ozone is oxidized and removed by the strong oxidizing power of ozone generated like an arrow in the water 33 through the bubble generator 34, the combustion gas is discharged above the surface of the tank 3 (air part). 47) the combustion gas that has risen to form the bubble (32) is again harmful chemicals such as dioxins due to the strong oxidizing power of ozone that ozone generated from the ozone generator (38) is generated like an arrow through the bubble generator (40). Is oxidized In addition, by the water spray (46) by the injectors 45 installed in the upper portion of the water tank (3), harmful chemicals, such as dioxin, once again dissolved in water and exits the water tank (3). Hazardous chemicals that could not go out and remain together with the water in the water 33 in the water tank 3 are again generated in the ozone generator 38 and generated in the water 33 through the bubble generator 34 as arrows. By purging the dioxin and harmful chemicals and odors cleanly by the strong oxidizing power of ozone, the second and third processes are repeated to remove odors with dioxins and harmful chemicals and then discharge the combustion gas outlet 49. Through the atmosphere.

Through the above process, soot and harmful substances contained in the combustion gas are removed by filter, water and ozone to prevent environmental pollution.

Water in the water tanks (2, 3) is treated by draining through the drains (28, 35) when the waste is not incinerated, and water in the water tanks (2, 3) through the water inlets (16, 43). Fill in the.

The present invention removes soot and particulates with large particle size through the filters 6 and 8, and harmful chemicals that cannot be removed through the filter are compared with unburned hydrocarbons (HC) and NOx. It is dissolved in water, ozone and water spray to oxidize and remove dioxin, harmful chemicals and odors.

As described above, according to the present invention, the soot and the fine particles contained in the combustion gas generated when the waste is incinerated are collected by the filters 6 and 8, and the combustion gas from which the soot and the fine particles are removed is Through the water (13, 33) and water spray (21, 46), the dioxin and harmful chemicals contained in it are dissolved in water and oxidized by the powerful oxidizing power of ozone to prevent it from falling into the atmosphere. It can prevent the environmental pollution caused by incineration of garbage and play a role in protecting the health of local residents.

Claims (1)

In the flue gas purification device for removing soot or harmful chemicals contained in the flue gas discharged from the waste incinerator, the filter (6) and the centrifugal suction pump (7, 14) Wet filter (8) with wet water, water tanks (2, 3), multiple pipes (10, 30), grooves (11, 31), water (13, 33) and power sprayers (9). , 41), injectors (20, 45), water sprays (21, 46), ozone generators (23, 38), and bubble generators (25, 27, 34, 40), which are included in the combustion gas discharged from the waste incineration plant. A waste incinerator combustion exhaust gas purifier that removes spent soot and hazardous chemicals.