CN201997243U - Medical garbage incineration tail gas purifying system - Google Patents
Medical garbage incineration tail gas purifying system Download PDFInfo
- Publication number
- CN201997243U CN201997243U CN2011200829825U CN201120082982U CN201997243U CN 201997243 U CN201997243 U CN 201997243U CN 2011200829825 U CN2011200829825 U CN 2011200829825U CN 201120082982 U CN201120082982 U CN 201120082982U CN 201997243 U CN201997243 U CN 201997243U
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- flue gas
- quench tower
- exhaust gas
- sack cleaner
- spray
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Abstract
The utility model discloses a medical garbage incineration tail gas purifying system comprising a flue gas quench tower, a semi-drying reactor, a bag dust remover, a spraying absorption tower, a steam-flue gas heat exchanger, a draught fan and a chimney which are sequentially connected in series; a spray gun is arranged in the flue gas quench tower; a lime feeding system and an activated carbon feeding system are arranged between the flue gas quench tower and the semi-drying reactor; and a defogger and a spray layer are arranged in the spraying absorption tower. The medical garbage incineration tail gas purifying system can significantly improve the purification efficiency of medical garbage incineration tail gas; particularly when a large amount of organic chloride, such as waste plastic (e.g. polyvinyl chloride (PVC), polyvinyl dichloride (PVDC)), rubber, leather and the like are burned, the concentration of HC1 generated in the burning is higher; and wet process alkali is automatically washed and put into operation, acid removal requirements can be met, so that the environmental pollution is reduced, no waste water is produced, and the problem that wet process treatment can produce waste water is solved.
Description
[technical field]
The utility model relates to gas cleaning, relates in particular to the medical refuse burning exhaust gas purification system.
[background technology]
Medical waste is because of having great harmfulness, need carry out harmless treatment after concentrating burning to tail gas, at present domestic comparatively commonly used be the semidry method flue gas treating process, add and work in coordination with under the effect of sack cleaner in circulating ash, active carbon, heavy metal, dust and dioxin can well be removed; But because burnings such as a large amount of organic chloride of existence in the medical waste such as waste plastics (as PVC, PVDc), rubber, leather generate a large amount of HCl.Because incinerated matter composition complexity and content are big, when sour gas (as HCl, HF etc.) was in the high value, the deacidification efficiency of semidry process was not very desirable just, is difficult to reach discharging standards.This is by the decision of the characteristic of semidry process itself, and by flash evapn, the reaction time is short and based on gas-solid phase reaction in reactor for water capacity absorbent seldom.Therefore the absorbent utilization rate is not high, and sour gas pollutant removing efficient is generally below 90%.
[utility model content]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of medical refuse burning exhaust gas purification system, can improve pollutant removing efficient, reduces environmental pollution.
For achieving the above object, the utility model proposes a kind of medical refuse burning exhaust gas purification system, the flue gas quench tower, half dry type reactor, sack cleaner, spray absorber, steam-flue gas heat exchange device, air-introduced machine and the chimney that comprise series connection successively, be provided with spray gun in the described flue gas quench tower, be provided with lime charging system and active carbon charging system between flue gas quench tower and the half dry type reactor, be provided with demister and spraying layer in the spray absorber.
As preferably, be provided with the import baffle plate between described sack cleaner and the spray absorber, be provided with outlet damper between steam-flue gas heat exchange device and the air-introduced machine, be provided with by-pass damper between sack cleaner and the air-introduced machine.
As preferably, the dust exit of described sack cleaner is provided with fluid-bed, and the outlet of fluid-bed is connected to hybrid humidifier, and the outlet of hybrid humidifier is connected to the half dry type reactor.
As preferably, the bottom of described spray absorber adopts NaOH solution circulating pump to be connected to spraying layer.
As preferably, the bottom of described spray absorber also adopts solution to reclaim the inlet that pump is connected to spray gun, and the inlet of spray gun is also connected to running water.
The beneficial effects of the utility model: the utility model can obviously improve the purification efficiency of medical refuse burning tail gas, especially when a large amount of organic chloride of burning such as waste plastics (as PVC, PVDc), rubber, leather etc., the HCl concentration that burning generates is higher, can automatically the wet method alkali cleaning be put into operation, still can reach the depickling requirement, thereby the minimizing environmental pollution, and do not have the waste water generation, solved the problem of wet-treating meeting generation waste water.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the structural representation of the utility model medical refuse burning exhaust gas purification system.
[specific embodiment]
As shown in Figure 1, the medical refuse burning exhaust gas purification system, comprise the flue gas quench tower 1 of series connection successively, half dry type reactor 5, sack cleaner 6, spray absorber 11, steam-flue gas heat exchange device 16, air-introduced machine 18 and chimney 19, be provided with spray gun 2 in the described flue gas quench tower 1, be provided with lime charging system 3 and active carbon charging system 4 between flue gas quench tower 1 and the half dry type reactor 5, be provided with demister 12 and spraying layer 13 in the spray absorber 11, be provided with import baffle plate 10 between described sack cleaner 6 and the spray absorber 11, be provided with outlet damper 17 between steam-flue gas heat exchange device 16 and the air-introduced machine 18, be provided with by-pass damper 9 between sack cleaner 6 and the air-introduced machine 18, the dust exit of described sack cleaner 6 is provided with fluid-bed 7, the outlet of fluid-bed 7 is connected to hybrid humidifier 8, the outlet of hybrid humidifier 8 is connected to half dry type reactor 5, the bottom of described spray absorber 11 adopts NaOH solution circulating pump 15 to be connected to spraying layer 13, the bottom of described spray absorber 11 also adopts solution to reclaim the inlet that pump 14 is connected to spray gun 2, and the inlet of spray gun 2 is also connected to running water.
About 400 ℃-600 ℃ of flue-gas temperature from incinerator for medical garbage, in flue gas quench tower 1, be cooled to rapidly (less than 1 second) about 200 ℃, to avoid the generation once more of dioxin, used cooling water is the discharge slurries of spray absorber 11 when the flue gas caustic washing system puts into operation, standby cooling water is arranged simultaneously as a supplement,, then squeeze into quench tower by water pump with common water for industrial use if flue gas caustic washing system (spray absorber 11) does not put into operation.Because need the cooling medium uniform atomizing, the spray gun 2 in the flue gas quench tower 1 is the two-fluid spray gun, makes the cooling medium uniform atomizing with compressed-air actuated effect.Flue gas after the cooling enters half dry type reactor 5, is provided with lime charging system 3, active carbon charging system 4 before half dry type reactor 5.Lime charging system 3 can quantitatively add semidry method depickling reactant lime, is generally Ca (OH)
2Active carbon charging system 4 can quantitatively add active carbon and be used to adsorb dioxin, heavy metal.5 outlets of half dry type reactor connect sack cleaner 6, in sack cleaner 6 dust are removed down, and dust joins in the hybrid humidifier 8 of external by fluid-bed 7.Add the fresh water (FW) humidification in hybrid humidifier 8, the ash behind the humidification enters in the half dry type reactor 5, and flue-gas temperature is further reduced, lime and acidic gas in flue gas SO
2, SO
3, reactions such as HCl, HF, reach the depickling purpose.Next, if the waste plastics (as PVC, PVDc) in the medical waste of burning, rubber, leather etc. are more for a long time, the HCl concentration that burning generates is higher, acid contaminant can not reach emission request after the half dry type depickling, can go spray absorber 11 further alkali cleanings, then open the import baffle plate 10 before the spray absorber 11, close by-pass damper 9, open outlet damper 17.Flue gas enters spray absorber 11 and accepts alkali cleaning, the NaOH solution for preparing is constantly mended spray absorber 11, the spraying layer 13 of alkali lye being delivered to spray absorber 11 tops with NaOH solution circulating pump 15 sprays and descends, the solution droplet contacts with upstream flue gas, flue gas obtains washing, purifying, slurries fall into the solution pool of tower lower end, abundant reacted slurries reclaim pump 14 through solution and deliver to flue gas quench tower 1, making cooling fluid uses once again, avoid waste water to produce, flue gas after being purified is removed the drop that carries through the demister 12 of cat head end, after entering steam-flue gas heat exchange device 16 and heat, is discharged through chimney 19 by air-introduced machine 18.If flue gas can qualified discharge after the synergy of half dry type reactor 2 and sack cleaner 6, then do not need again can to open by-pass damper 9 through spray absorber 11 alkali cleanings, close import baffle plate 10 and outlet damper 17, directly discharge.
Native system can obviously improve the purification efficiency of medical refuse burning tail gas, especially when a large amount of organic chloride of burning such as waste plastics (as PVC, PVDc), rubber, leather etc., the HCl concentration that burning generates is higher, can automatically the wet method alkali cleaning be put into operation, and still can reach the depickling requirement.Depickling, the integrated considerations of multiple pollutant such as absorption dioxin, heavy metal.Reclaim pump 14 with the slurries after the alkali cleaning through solution and deliver to flue gas quench tower 1, make cooling fluid and use once again, avoid waste water to produce, solved the problem of wet-treating meeting generation waste water.Flue gas in flue gas quench tower 1,1 second less than time be cooled to below 200 ℃ about rapidly from 400 ℃-600 ℃, avoided the generation once more of dioxin.Half dry type reactor 5 adopts the humidification by mixing of gas device 8 of external, can effectively avoid work of water sprinkling for better material moisture in half dry type reactor 5, can not cause half dry type reactor 5 sticking walls.System regulates flexibly, and, amount low when pollutant levels can adopt semidry process separately by the switching of baffle door after a little while; And when pollutant load is high, drop into the spray absorber 11 of wet method again, and can save energy, can guarantee to reach national emission request again.The wet method spray absorber, can be avoided adopting other (as CaCO3 solution) and phenomenons such as fouling, obstruction such as the pipeline that causes, pump as soda-wash solution with NaOH solution.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any scheme after the utility model simple transformation is all belonged to protection domain of the present utility model.
Claims (5)
1. medical refuse burning exhaust gas purification system, it is characterized in that: the flue gas quench tower, half dry type reactor, sack cleaner, spray absorber, steam-flue gas heat exchange device, air-introduced machine and the chimney that comprise series connection successively, be provided with spray gun in the described flue gas quench tower, be provided with lime charging system and active carbon charging system between flue gas quench tower and the half dry type reactor, be provided with demister and spraying layer in the spray absorber.
2. a kind of medical refuse burning exhaust gas purification system as claimed in claim 1, it is characterized in that: be provided with the import baffle plate between described sack cleaner and the spray absorber, be provided with outlet damper between steam-flue gas heat exchange device and the air-introduced machine, be provided with by-pass damper between sack cleaner and the air-introduced machine.
3. a kind of medical refuse burning exhaust gas purification system as claimed in claim 1, it is characterized in that: the dust exit of described sack cleaner is provided with fluid-bed, the outlet of fluid-bed is connected to hybrid humidifier, and the outlet of hybrid humidifier is connected to the half dry type reactor.
4. a kind of medical refuse burning exhaust gas purification system as claimed in claim 1 is characterized in that: the bottom of described spray absorber adopts NaOH solution circulating pump to be connected to spraying layer.
5. a kind of medical refuse burning exhaust gas purification system as claimed in claim 4 is characterized in that: the bottom of described spray absorber also adopts solution to reclaim the inlet that pump is connected to spray gun, and the inlet of spray gun is also connected to running water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200829825U CN201997243U (en) | 2011-03-25 | 2011-03-25 | Medical garbage incineration tail gas purifying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200829825U CN201997243U (en) | 2011-03-25 | 2011-03-25 | Medical garbage incineration tail gas purifying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201997243U true CN201997243U (en) | 2011-10-05 |
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ID=44700019
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200829825U Expired - Lifetime CN201997243U (en) | 2011-03-25 | 2011-03-25 | Medical garbage incineration tail gas purifying system |
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| Country | Link |
|---|---|
| CN (1) | CN201997243U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225302A (en) * | 2011-03-25 | 2011-10-26 | 浙江菲达脱硫工程有限公司 | System and method for purifying tail gas of medical waste incineration |
| CN103405992A (en) * | 2013-07-25 | 2013-11-27 | 江苏海阳化纤有限公司 | Apparatus used for processing calcining flue gas of chinlon-6 spinning assembly |
| CN109114579A (en) * | 2018-10-18 | 2019-01-01 | 上海天汉环境资源有限公司 | A kind of flue gas of refuse burning processing system and treatment process |
-
2011
- 2011-03-25 CN CN2011200829825U patent/CN201997243U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225302A (en) * | 2011-03-25 | 2011-10-26 | 浙江菲达脱硫工程有限公司 | System and method for purifying tail gas of medical waste incineration |
| CN103405992A (en) * | 2013-07-25 | 2013-11-27 | 江苏海阳化纤有限公司 | Apparatus used for processing calcining flue gas of chinlon-6 spinning assembly |
| CN109114579A (en) * | 2018-10-18 | 2019-01-01 | 上海天汉环境资源有限公司 | A kind of flue gas of refuse burning processing system and treatment process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
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| CX01 | Expiry of patent term |