CN210951327U - Flue gas pollutant treatment system - Google Patents
Flue gas pollutant treatment system Download PDFInfo
- Publication number
- CN210951327U CN210951327U CN201921967567.0U CN201921967567U CN210951327U CN 210951327 U CN210951327 U CN 210951327U CN 201921967567 U CN201921967567 U CN 201921967567U CN 210951327 U CN210951327 U CN 210951327U
- Authority
- CN
- China
- Prior art keywords
- water
- flue gas
- cooling tower
- gas pollutant
- quencher
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model discloses a flue gas pollutant processing system, pyrolysis gasifier is connected with the entry end of two combustion chambers, the exit end of two combustion chambers is through the flue gas entrance point of two segmentation water-cooled wall connection quench coolers, the cooling water export of quench coolers is connected with the cooling tower, the cooling tower export is connected with first water-feeding pump and second water-feeding pump respectively, first water-feeding pump is connected with the water pipe interface of two segmentation water-cooled walls, the water supply piping connection of second water-feeding pump and quench coolers, the water pipeline of two segmentation water-cooled wall exports divides two the tunnel, be connected with the cooling tower all the way, another way joins the water supply piping connection of back and quench coolers with the water-feeding piping of second water-feeding pump. The utility model discloses fly ash bonds in can effectively reducing the high temperature flue, also carries out the pollutant simultaneously and deviates from the processing. The water pipeline in the quencher adopts mixed flow arrangement, so that the condensation phenomenon of the pipe wall can be effectively controlled, the acid corrosion of the flue gas is prevented, and the generation of dioxin is effectively controlled.
Description
Technical Field
The utility model belongs to the technical field of the pollutant control, concretely relates to flue gas pollutant processing system.
Background
With the development of social economy, the yield of household garbage is increasing day by day, and how to treat the household garbage becomes a global problem. The waste incineration method has gradually become the main method for treating the domestic waste because the reduction of the volume and the reduction of the volume of the waste can be performed most quickly and effectively. However, most domestic garbage has complex components, and a combustion chamber is easy to generate a large amount of harmful gases such as nitrogen oxides, dioxin and the like, which cause harm to the health of people and destroy the ecological environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed at, provide a flue gas pollutant processing system, reduce dioxin, nitrogen oxide in the emission flue gas, carry out heat recovery, reduce the running cost, optimize combustion environment.
The utility model adopts the following technical scheme:
the utility model provides a flue gas pollutant processing system, including pyrolysis gasifier, the pyrolysis gasifier is connected with the entry end of two combustion chambers, the flue gas entrance point of quench cooler is connected through two segmentation water-cooled wall to the exit end of two combustion chambers, the cooling water export of quench cooler is connected with the cooling tower, the cooling tower export is connected with the water supply pipe of the water pipe connector of two segmentation water-cooled wall and quench cooler respectively, the water pipeline of two segmentation water-cooled wall export divides two the tunnel, be connected with the cooling tower all the way, another way joins the water supply pipe of back and quench cooler with the water supply pipe of second water-feeding pump and is connected.
Specifically, a gravity settling chamber is arranged on the two-section water-cooled wall.
Furthermore, the gravity settling chamber is arranged in a middle flue gas pipeline of the two-section water-cooled wall.
Furthermore, a shutter separator is arranged in the gravity settling chamber, and an ash discharge port is arranged at the bottom of the gravity settling chamber.
Furthermore, the shutter separator is provided with an ammonia spraying opening.
Specifically, a first water feed pump is arranged between the outlet of the cooling tower and the two-section water-cooled wall, and a second water feed pump is arranged between the outlet of the cooling tower and the quencher.
Specifically, a finned heat exchange tube bundle tube is arranged in the front row of the quencher.
Further, the finned tubes are arranged in a staggered manner in the quencher.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the utility model relates to a flue gas pollutant processing system, native rubbish produces high temperature synthetic gas in pyrolysis gasifier pyrolysis gasification, the high temperature flue gas that produces through two combustion chambers postcombustion again, contain a large amount of flying ashes and pollutants in the high temperature flue gas, high temperature flue gas is once through two segmentation water-cooled walls and quencher, through water-cooling control gas temperature, flying ashes bond in the prevention and control high temperature flue, the feedwater of quencher water supply pipe has two parts to constitute, one part is two segmentation water-cooled walls export high temperature water, one part is second water-feeding pump export low temperature water, the proportion of two way waters passes through automatic control and gets into the quencher, make the pipe wall temperature of quencher above acid dew point temperature.
Further, be equipped with the gravity settling chamber in the middle of the flue gas pipeline of two segmentation water-cooling walls, be equipped with the shutter separator in the gravity settling chamber and spout the ammonia mouth, can carry out preliminary settlement to the dust through the shutter separator to the flue gas, settle the ash and discharge through row ash mouthful. The shutter separator sets up and spouts the ammonia mouth, spouts the aqueous ammonia and can deviate from to the nitrogen oxide in the flue gas, also can cool off the shutter separator, because flue gas velocity is relatively slower in the gravity settling chamber, provides sufficient time for the denitration reaction to reduce the flue gas emission pollutant.
Further, set up and spout the ammonia mouth, spout into the aqueous ammonia and can deviate from the nitrogen oxide in the flue gas, also can cool off shutter separator, because flue gas velocity is relatively slower in the gravity settling chamber, provides sufficient time for the denitration reaction to reduce the flue gas emission pollutant.
Further, the quenching cooler adopts the finned tube to the staggered arrangement, the effectual heat exchange efficiency that has increased, water pipe adopts the mixed flow to arrange in the quenching cooler moreover, can the effective control pipe wall dewfall phenomenon, prevents the acid corrosion of flue gas.
To sum up, the utility model discloses can effectively reduce flying dust bonding in the high temperature flue, also carry out the pollutant simultaneously and deviate from the processing, the water pipeling adopts the mixed flow to arrange in the quench cooler, can effectively control the pipe wall dewfall phenomenon, prevents the acid corrosion of flue gas, the generation of effectual control dioxin.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. a pyrolysis gasifier; 2. a second combustion chamber; 3. a two-section water-cooled wall; 4. a shutter separator; 5. an ammonia spraying port; 6. an ash discharge port; 7. a quencher; 8. a cooling tower; 9. a first feed pump; 10. a second feed pump; 11. a gravity settling chamber.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present invention relates to a flue gas pollutant treatment system, which comprises a pyrolysis gasifier 1, a secondary combustion chamber 2, a two-stage water-cooled wall 3, a shutter separator 4, an ammonia injection port 5, an ash discharge port 6, a quench cooler 7, a cooling tower 8, a first water feed pump 9, a second water feed pump 10, and a gravity settling chamber 11.
The inlet end of pyrolysis gasifier 1 and second combustion chamber 2 is connected, the exit end of second combustion chamber 2 is connected quench cooler 7 through two-stage water-cooling wall 3, the export of quench cooler 7 is connected with cooling tower 8, be provided with gravity settling chamber 11 on the two-stage water-cooling wall 3, the export of cooling tower 8 is connected with first water-feeding pump 9 and second water-feeding pump 10 respectively, first water-feeding pump 9 is connected with the water pipe interface of two-stage water-cooling wall 3, second water-feeding pump 10 is connected with the water supply pipeline of quench cooler 7, the water pipeline of two-stage water-cooling wall 3 export divides into two ways, be connected with cooling tower 8 all the way, another way joins with the water supply pipeline of quench cooler 7 after with the water supply pipeline of second water-feeding pump 10.
The gravity settling chamber 11 is internally provided with a shutter separator 4 and an ammonia spraying port 5, and the bottom of the gravity settling chamber is provided with an ash discharging port 6.
The raw garbage is pyrolyzed and gasified in the pyrolysis gasifier 1 to generate high-temperature synthesis gas, and then passes through high-temperature flue gas generated by secondary combustion in the secondary combustion chamber 2, wherein the high-temperature flue gas contains a large amount of fly ash and pollutants, and the high-temperature flue gas passes through the two-section water-cooled wall 3 and the quencher 7 once, and the temperature of the flue gas is controlled by water cooling to prevent fly ash adhesion in a high-temperature flue.
Be equipped with gravity settling chamber 11 in the middle of two segmentation water-cooled wall 3 in the flue gas pipeline, be equipped with shutter separator 4 in the gravity settling chamber and spout ammonia mouth 5, can carry out preliminary settlement to the dust through shutter separator 4 to the flue gas, settle the ash and discharge through row ash mouth 6. Shutter separator 4 is provided with spouts ammonia mouth 5, spouts into the aqueous ammonia and can deviate from to the nitrogen oxide in the flue gas, also can cool off shutter separator 4, because flue gas velocity is relatively slower among the gravity settling chamber 11, provides sufficient time for the denitration reaction to reduce the flue gas emission pollutant.
The flue gas in the two-section water-cooled wall 3 and the gravity settling chamber 11 is above 800 ℃, so that the residence time of the flue gas above 800 ℃ can be increased, and the generation of dioxin can be effectively controlled.
The water supply of the water supply pipeline of the quencher 7 consists of two parts, one part is high-temperature water at the outlet of the two-section water-cooled wall 3, the other part is low-temperature water at the outlet of the second water supply pump 10, and the proportion of the two paths of water enters the quencher 7 through automatic control, so that the temperature of the tube wall of the finned tube at the front row of the quencher 7 is higher than the acid dew point temperature.
The quencher 7 adopts finned tubes and is arranged in a staggered manner, the heat exchange efficiency is effectively improved, and the water pipelines in the quencher 7 adopt mixed flow arrangement, so that the dewing phenomenon of the tube wall can be effectively controlled, and the acid corrosion of smoke is prevented.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model relates to a flue gas pollutant processing system's concrete working process as follows:
the garbage enters a pyrolysis gasifier to generate synthesis gas, the synthesis gas is combusted in a secondary combustion chamber, and generated high-temperature flue gas sequentially passes through a two-section water-cooled wall and a quencher. Since the high temperature flue gas contains a large amount of fly ash and pollutants, fly ash adhesion, secondary generation of dioxin, and removal of nitrogen oxides are to be prevented.
Firstly, the temperature of the flue gas of the two-section water-cooled wall needs to be controlled within a certain range, so that the overtemperature can not be prevented, and the temperature can not be reduced too low. Meanwhile, a gravity settling chamber is arranged in the flue gas pipeline in the middle of the two-section water-cooled wall, and a shutter separator and an ammonia spraying opening are arranged in the gravity settling chamber, so that the emission of nitrogen oxide pollutants is reduced.
And secondly, the water supply of a water supply pipeline of the quencher consists of two parts, wherein one part is high-temperature water at an outlet of the two-section water-cooled wall, the other part is low-temperature water at an outlet of the second water supply pump, and the proportion of the two paths of water enters the quencher through automatic control, so that the temperature of the pipe wall of the finned pipe at the front row of the quencher is above the acid dew point temperature. The quencher adopts the finned tube to the staggered arrangement, the effectual heat exchange efficiency that has increased, water pipeline adopts the mixed flow to arrange in the quencher moreover, can the effective control pipe wall dewfall phenomenon, prevents the acid corrosion of flue gas.
The utility model relates to a flue gas pollutant processing system is the demand that is fit for rural area, city development, all has very big demand space at industry, civilian, and the effectual reduction dioxin of this technique, nitrogen oxide discharge carry out heat recovery, reduce running cost, optimize combustion environment. The technology has the following advantages that:
(1) the temperature of the flue gas is controlled by water cooling, so that the adhesion of fly ash in a high-temperature flue is prevented.
The native rubbish produces 500 ~ 600 ℃ high temperature synthetic gas at pyrolysis gasifier pyrolysis gasification, produces 1000 ℃ high temperature flue gas through two combustion chambers postcombustion again to contain a large amount of flying ashes, this temperature is close to the melting temperature of flying ashes, consequently the temperature of controlling the flue gas just can prevent flying ashes melting coking, the utility model discloses an use two segmentation water-cooled walls, controlled the temperature of flue gas, use gravity settling chamber, shutter separator separation flying ash for outside the discharge system is subsided to the large granule flying ash, the flying ashes bond in the reduction flue, the effectual equipment operating efficiency that has improved, increase entire system's operating stability.
(2) Effectively control the generation of dioxin.
The primary garbage can generate a large amount of dioxin in a pyrolysis gasification furnace of the pyrolysis gasification furnace, and the state requires that the dioxin stays in flue gas with the temperature higher than 800 ℃ for 2 s. Present equipment often increases the second combustion chamber, perhaps increases the flue, and what this kind of method brought is exactly can lead to flying dust in the flue to bond in a large number for the operation effect reduces, the utility model discloses an use two segmentation water-cooled walls, control flue gas is through two segmentation water-cooled walls more than 800 ℃, both effectually increased the time that the dioxin stopped more than 800 ℃, can make the large granule flying dust subside again, and the flying dust bonds in the reduction flue. Meanwhile, a quencher is used within the temperature range of secondary synthesis of the dioxin, secondary synthesis of the dioxin is destroyed, and the standard of smoke emission is ensured.
(3) The water inlet temperature of the quencher is controlled, the flow in the quencher is changed, and the wall surface corrosion of the quencher is prevented.
Because the restriction of the operating temperature scope of quench cooler, go out at the quench cooler and appear sour dew corruption very easily, consequently be in the utility model discloses in adopt the mode entering quench cooler that high-temperature water and low temperature water mix. The part is two-section type water-cooled outlet high-temperature water, the part is outlet low-temperature water of a second water supply pump, and the proportion of the two paths of water enters the quencher through automatic control, so that the temperature of the tube wall of the finned tube at the front row of the quencher is above the acid dew point temperature, and the corrosion is prevented. And then the quencher adopts the finned tube to the staggered arrangement, the effectual heat exchange efficiency that has increased, water pipe adopts the mixed flow to arrange in the quencher moreover, can the effective control pipe wall dewfall phenomenon, prevents the acid corrosion of flue gas.
(4) The emission of nitrogen oxides is effectively controlled.
The two-section water-cooled wall gravity settling chamber is provided with the ammonia spraying port, the ammonia water is sprayed into through the ammonia spraying port, the nitrogen oxide in the flue gas can be separated, and the flue gas velocity in the gravity settling chamber is relatively slow, so that sufficient time is provided for denitration reaction, and pollutants discharged by the flue gas are reduced.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a flue gas pollutant processing system, a serial communication port, including pyrolysis gasifier (1), pyrolysis gasifier (1) is connected with the entry end of two combustion chambers (2), the exit end of two combustion chambers (2) is through the flue gas entrance point that two segmentation water-cooling walls (3) are connected chiller (7), the cooling water export of chiller (7) is connected with cooling tower (8), cooling tower (8) export is connected with the water pipe connection of two segmentation water-cooling walls (3) and chiller (7) respectively, the water pipeline of two segmentation water-cooling walls (3) export divides two tunnel, be connected with cooling tower (8) all the way, another way joins the water supply pipeline of back and chiller (7) with the water supply pipeline of second water-feeding pump (10).
2. The flue gas pollutant treating system according to claim 1, characterized in that a gravity settling chamber (11) is provided on the two-stage waterwall (3).
3. The flue gas pollutant treating system according to claim 2, characterised in that the gravity settling chamber (11) is arranged in the middle flue gas duct of the two-section water cooled wall (3).
4. The flue gas pollutant treating system of claim 2, characterized in that the gravity settling chamber (11) is provided with a shutter separator (4) inside and an ash discharge opening (6) at the bottom.
5. The flue gas pollutant treating system of claim 4, characterized in that the shutter separator (4) is provided with ammonia injection ports (5).
6. The flue gas pollutant treating system according to claim 1, characterized in that a first feed water pump (9) is arranged between the outlet of the cooling tower (8) and the two-stage water wall (3), and a second feed water pump (10) is arranged between the outlet of the cooling tower (8) and the quencher (7).
7. The flue gas pollutant treating system of claim 1, characterized in that the front row of the quencher (7) is provided with finned heat exchange tube bundle tubes.
8. The flue gas pollutant treating system of claim 7, characterized in that the finned tubes are staggered within the quencher (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921967567.0U CN210951327U (en) | 2019-11-14 | 2019-11-14 | Flue gas pollutant treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921967567.0U CN210951327U (en) | 2019-11-14 | 2019-11-14 | Flue gas pollutant treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210951327U true CN210951327U (en) | 2020-07-07 |
Family
ID=71376430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921967567.0U Active CN210951327U (en) | 2019-11-14 | 2019-11-14 | Flue gas pollutant treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210951327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110801724A (en) * | 2019-11-14 | 2020-02-18 | 西安交通大学 | Flue gas pollutant desorption system with corrosion prevention and control function |
-
2019
- 2019-11-14 CN CN201921967567.0U patent/CN210951327U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110801724A (en) * | 2019-11-14 | 2020-02-18 | 西安交通大学 | Flue gas pollutant desorption system with corrosion prevention and control function |
| CN110801724B (en) * | 2019-11-14 | 2023-12-19 | 西安交通大学 | Flue gas pollutant removal system with corrosion prevention and control functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104344408B (en) | Salt bearing liquid wastes burns hold concurrently heat reclaiming system and technique | |
| CN110818220A (en) | Sludge low-temperature drying coupling pyrolysis system | |
| CN106244242A (en) | A kind of Novel medical rubbish plasma gasification processing system | |
| CN210951327U (en) | Flue gas pollutant treatment system | |
| CN109777521A (en) | A kind of gasification system and gasification process | |
| CN211204943U (en) | Electric furnace flue gas purification and waste heat utilization system | |
| US9989247B2 (en) | Pyrolysis-combustion dual-bed system for eliminating contamination by combustion of high-sodium coal | |
| CN211367382U (en) | Sludge low-temperature drying coupling pyrolysis system | |
| US9927119B2 (en) | Dual-bed system for preventing boiler heating surface from being contaminated | |
| CN211011413U (en) | Garbage flue gas waste heat recovery system | |
| CN210568552U (en) | Boiler energy-saving and flue gas whitening system | |
| CN110030566B (en) | Comprehensive treatment method for waste gas and waste water | |
| CN110801724A (en) | Flue gas pollutant desorption system with corrosion prevention and control function | |
| CN110452724A (en) | A kind of clean coking process and system | |
| CN108179029A (en) | A kind of cleaning Coal Gasification Technology of carbon cycle | |
| CN209193912U (en) | A kind of raw coke oven gas dedusting and tar reclaimer | |
| CN104785094A (en) | Desulphurization and dust-removal integrated device for gas fume of boiler | |
| CN211011390U (en) | Garbage pollutant control and waste heat recovery system | |
| CN204786429U (en) | Living beings rubbish combustion system | |
| CN213119111U (en) | Carbon-containing fly ash high-temperature melting treatment system | |
| CN211781188U (en) | Dangerous waste incineration flue gas rapid cooling heat exchange system | |
| CN104399321B (en) | Shell and tube air cooler and closed submerged kiln gas purification method ash removal method interior with pipe | |
| CN209475892U (en) | A kind of dust removing treatment system for gas burner | |
| CN110906349A (en) | Garbage flue gas waste heat recovery system of low-cost emission reduction dioxin | |
| CN105838444B (en) | A kind of fluidized gasification bottom slag cooling conveying system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |