CN111185083A - Novel powdery solid denitration device for flue gas of combustion furnace - Google Patents
Novel powdery solid denitration device for flue gas of combustion furnace Download PDFInfo
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- CN111185083A CN111185083A CN201811356728.2A CN201811356728A CN111185083A CN 111185083 A CN111185083 A CN 111185083A CN 201811356728 A CN201811356728 A CN 201811356728A CN 111185083 A CN111185083 A CN 111185083A
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- pipeline
- gas
- storage bin
- boiler
- weighing feeder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
- B01D53/565—Nitrogen oxides by treating the gases with solids
Abstract
The invention discloses a novel combustion furnace flue gas powdery solid denitration device, which comprises a storage bin, a Roots blower, a boiler and a chimney, and is characterized in that: the improved boiler comprises a storage bin, a weighing feeder, a Roots blower, a gas ejector, a spray gun, a boiler, a chimney and a chimney, wherein the storage bin is arranged above the storage bin, the weighing feeder is arranged below the storage bin, the Roots blower is connected between the storage bin and the weighing feeder through a pipeline, the weighing feeder is connected with the gas ejector through a pipeline, the gas ejector comprises a pipeline and a spray gun, the spray gun is arranged on the front wall and the side wall of a flue of the boiler and. The invention has simple equipment, small occupied area and convenient arrangement; the gas and the solid are fully mixed, so that ammonia escape is low, and meanwhile, the smoke resistance is low, and the normal operation of the boiler is hardly influenced; under different flue gas load conditions, the adaptability, stability, denitration efficiency and effective temperature range of gas-solid mixing are better than those of liquid-gas mixing, and the influence of working condition fluctuation in the furnace is small.
Description
Technical Field
The invention relates to a denitration device, in particular to a novel powdery solid denitration device for flue gas of a combustion furnace, and belongs to the technical field.
Background
The importance of the process of removing nitrogen oxides from combustion fumes to prevent environmental pollution has been pointed out as a worldwide problem. At present, a powdery denitration agent device is also used in a flue gas denitration process in precedent, but the powdery denitration agent device is not systematic.
The prior art has great defects. If the requirement on a powder storage bin is strict, the material conveying flow is easy to block, the fluctuation of the oxygen content of the flue gas is large, the conversion rate of nitrogen oxide is low, the fluctuation of the discharged nitrogen oxide is large, and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a novel powdery solid denitration device for flue gas of a combustion furnace, which is reasonable in structure and convenient to use.
The purpose of the invention can be achieved by adopting the following technical scheme:
the utility model provides a novel likepowder solid denitration of burning furnace flue gas device, includes feed bin, roots's fan, boiler and chimney, its characterized in that: the improved boiler comprises a storage bin, a weighing feeder, a Roots blower, a gas ejector, a spray gun, a boiler, a chimney and a chimney, wherein the storage bin is arranged above the storage bin, the weighing feeder is arranged below the storage bin, the Roots blower is connected between the storage bin and the weighing feeder through a pipeline, the weighing feeder is connected with the gas ejector through a pipeline, the gas ejector comprises a pipeline and a spray gun, the spray gun is arranged on the front wall and the side wall of a flue of the boiler and.
As a preferable scheme of the invention, the storage bin is provided with three pipeline ports, two pipeline ports are arranged above the storage bin, one pipeline port above the storage bin is connected with the material bag through a pipeline, the other pipeline port is connected with the induced draft fan through a pipeline, one pipeline port is arranged below the storage bin, and the pipeline port below the storage bin is connected with the weighing feeder through a pipeline.
As a preferred scheme of the invention, the weighing feeder is provided with two pipeline ports, one pipeline port is arranged above the weighing feeder, the other pipeline port is arranged below the weighing feeder, the pipeline port above the weighing feeder is connected with the storage bin through a pipeline, and the pipeline port below the weighing feeder is connected into pipelines of the Roots blower and the gas injector through pipelines.
As a preferred scheme of the invention, an induced draft fan is arranged between the connection of the boiler tail and the chimney.
In a preferred embodiment of the invention, the gas injector distributes the material from the main pipe to branch pipes connected to the lances.
As a preferred scheme of the invention, a pressure sensor and a valve are arranged in the branch pipeline, and the materials conveyed by the induced draft fan are uniformly distributed in the flue by pressure and valve control.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has simple equipment, small occupied area and convenient arrangement, does not need to increase excessive equipment, does not change the arrangement of boiler flue gas equipment, and only needs to place equipment and pipelines near the boiler;
2. the invention adopts full mixing of gas and solid, ammonia escape is low, no damage is caused to the equipment body, and meanwhile, the smoke resistance is small, and the normal operation of the boiler is hardly influenced;
3. the denitration temperature reaction range is wide, due to the TNCR gas-solid mixing technology, reaction can be carried out as long as the flue gas temperature is more than 800 ℃, the adaptability, stability, denitration efficiency and effective temperature range of gas-solid mixing are better than those of liquid-gas mixing under different flue gas load conditions, and the influence of fluctuation of working conditions in the furnace is small.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
The system comprises a material bag 1, a material bin 2, a draught fan 3a, a draught fan 3b, a Roots fan 4, a weighing feeder 5, a gas ejector 6, a boiler 7 and a chimney 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, a novel denitration device for powdery solid in flue gas of a combustion furnace is described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
as shown in fig. 1, the novel denitration device for powdery solid in flue gas of combustion furnace of the embodiment comprises a storage bin 2, a roots blower 4, a boiler 7 and a chimney 8, and is characterized in that: the improved boiler is characterized in that a material bag 1 is arranged above the stock bin 2, a weighing feeder 5 is arranged below the stock bin 2, a Roots fan 4 is connected between the stock bin 2 and the weighing feeder 5 through a pipeline, the weighing feeder 5 is connected with a gas ejector 6 through a pipeline, the gas ejector 6 comprises a pipeline and a spray gun, the spray gun is arranged on the front wall and the side wall of a flue of a boiler 7 and a chimney 8, and the chimney 8 is arranged at the tail of the boiler 7.
The feed bin 2 is provided with three pipeline ports, two pipeline ports are arranged above the feed bin, one pipeline port above the feed bin passes through the pipeline to be connected with the material bag 1, the other pipeline port passes through the pipeline to be connected with the induced draft fan 3a, one pipeline port is arranged below the feed bin, and the pipeline port below the feed bin passes through the pipeline to be connected with the weighing feeder 5.
Weighing feeder 5 is equipped with two pipeline mouths, and a pipeline mouth is established in weighing feeder top, and another pipeline mouth is established in weighing feeder below, and weighing feeder top pipeline mouth passes through pipe connection feed bin 2, and weighing feeder below pipeline mouth passes through in the pipeline of pipeline access roots fan 4 and gas material sprayer 6.
And an induced draft fan 3b is arranged between the connection of the tail part of the boiler 7 and the chimney 8.
The gas injector 6 distributes the material from the main pipe to branch pipes, which are connected to the spray guns. The gas injector 6 distributes the materials from the main pipeline to the branch pipelines, and finally the gas injector is divided into a plurality of spray guns, the spray guns are distributed on the front wall and the side wall of the front flue of the economizer, and the number of the spray guns is started according to the load change of the boiler.
And a pressure sensor and a valve are arranged in the branch pipeline, and the materials conveyed by the draught fan are uniformly distributed into the flue through pressure and valve control.
The invention realizes the denitration principle: the TNCR denitration agent device takes a composite material as a carrier, an amino material is loaded on the composite material to form a powdery denitration agent, the powdery denitration agent is directly sprayed into a hearth by using a pneumatic conveying device, the spraying temperature window is 800-950 ℃, a large amount of amino functional groups are released at high temperature, and the amino reacts with NOx in flue gas to achieve the aim of removing NOx.
The invention has simple equipment, small occupied area and convenient arrangement, does not need to increase excessive equipment, does not change the arrangement of boiler flue gas equipment, and only needs to place equipment and pipelines near the boiler; the gas and the solid are fully mixed, ammonia escape is low, the equipment body cannot be damaged, and meanwhile, the smoke resistance is low, so that the normal operation of the boiler is hardly influenced; the denitration temperature reaction range is wide, due to the TNCR gas-solid mixing technology, reaction can be carried out as long as the flue gas temperature is more than 800 ℃, and under different flue gas load conditions, the adaptability, stability, denitration efficiency and effective temperature range of gas-solid mixing are better than those of liquid-gas mixing, and the influence of fluctuation of working conditions in the furnace is small.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept thereof within the scope of the present invention.
Claims (6)
1. The utility model provides a novel likepowder solid denitration of burning furnace flue gas device, includes feed bin, roots's fan, boiler and chimney, its characterized in that: the improved boiler comprises a storage bin, a weighing feeder, a Roots blower, a gas ejector, a spray gun, a boiler, a chimney and a chimney, wherein the storage bin is arranged above the storage bin, the weighing feeder is arranged below the storage bin, the Roots blower is connected between the storage bin and the weighing feeder through a pipeline, the weighing feeder is connected with the gas ejector through a pipeline, the gas ejector comprises a pipeline and a spray gun, the spray gun is arranged on the front wall and the side wall of a flue of the boiler and.
2. The novel denitration device for the powdery solid in the flue gas of the combustion furnace as claimed in claim 1, wherein: the feed bin is equipped with three pipeline mouth, and two pipeline mouths are established in the feed bin top, and one of them pipeline mouth of feed bin top passes through the pipe connection pocket, and another passes through the pipe connection draught fan, and a pipeline mouth is established in the feed bin below, and the pipeline mouth of feed bin below passes through the pipe connection batcher of weighing.
3. The novel denitration device for the powdery solid in the flue gas of the combustion furnace as claimed in claim 1, wherein: the weighing feeder is provided with two pipeline ports, one pipeline port is arranged above the weighing feeder, the other pipeline port is arranged below the weighing feeder, the pipeline port above the weighing feeder is connected with the storage bin through a pipeline, and the pipeline port below the weighing feeder is connected into a pipeline of the Roots blower and the gas injector through a pipeline.
4. The novel denitration device for the powdery solid in the flue gas of the combustion furnace as claimed in claim 1, wherein: and an induced draft fan is arranged between the connection of the boiler tail and the chimney.
5. The novel denitration device for the powdery solid in the flue gas of the combustion furnace as claimed in claim 1, wherein: the gas material injector distributes materials from the main pipeline to branch pipelines, and the branch pipelines are connected with spray guns.
6. The novel denitration device for the powdery solid in the flue gas of the combustion furnace as claimed in claim 4, wherein: and a pressure sensor and a valve are arranged in the branch pipeline, and the materials conveyed by the draught fan are uniformly distributed into the flue through pressure and valve control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811356728.2A CN111185083A (en) | 2018-11-15 | 2018-11-15 | Novel powdery solid denitration device for flue gas of combustion furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811356728.2A CN111185083A (en) | 2018-11-15 | 2018-11-15 | Novel powdery solid denitration device for flue gas of combustion furnace |
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| CN111185083A true CN111185083A (en) | 2020-05-22 |
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| CN201811356728.2A Pending CN111185083A (en) | 2018-11-15 | 2018-11-15 | Novel powdery solid denitration device for flue gas of combustion furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117205716A (en) * | 2023-11-07 | 2023-12-12 | 福建省铁拓机械股份有限公司 | Purification control method for plant-mixed thermal regeneration tail gas |
| CN117205716B (en) * | 2023-11-07 | 2024-04-16 | 福建省铁拓机械股份有限公司 | Purification control method for plant-mixed thermal regeneration tail gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0352624A (en) * | 1989-07-19 | 1991-03-06 | Hitachi Zosen Corp | Dry simultaneous desulfurization and denitrification |
| US20030053943A1 (en) * | 1997-03-21 | 2003-03-20 | Cooper Hal B.H. | Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal |
| CN104383808A (en) * | 2014-12-03 | 2015-03-04 | 天津天和环能科技有限公司 | Process and device for carrying out flue gas denitrification by utilizing solid organic denitrifying agent |
| CN204865530U (en) * | 2015-08-29 | 2015-12-16 | 顾云国 | Spout calcium desulfurization low temperature denitrification facility in coal fired boiler flue gas stove |
| CN107020008A (en) * | 2016-12-07 | 2017-08-08 | 中国石化集团胜利石油管理局胜利发电厂 | A kind of CFBB denitrating system and method |
| CN108043212A (en) * | 2017-12-14 | 2018-05-18 | 青岛科技大学 | A kind of technique and device of activated coke dry method combined desulfurization and denitration |
-
2018
- 2018-11-15 CN CN201811356728.2A patent/CN111185083A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0352624A (en) * | 1989-07-19 | 1991-03-06 | Hitachi Zosen Corp | Dry simultaneous desulfurization and denitrification |
| US20030053943A1 (en) * | 1997-03-21 | 2003-03-20 | Cooper Hal B.H. | Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal |
| CN104383808A (en) * | 2014-12-03 | 2015-03-04 | 天津天和环能科技有限公司 | Process and device for carrying out flue gas denitrification by utilizing solid organic denitrifying agent |
| CN204865530U (en) * | 2015-08-29 | 2015-12-16 | 顾云国 | Spout calcium desulfurization low temperature denitrification facility in coal fired boiler flue gas stove |
| CN107020008A (en) * | 2016-12-07 | 2017-08-08 | 中国石化集团胜利石油管理局胜利发电厂 | A kind of CFBB denitrating system and method |
| CN108043212A (en) * | 2017-12-14 | 2018-05-18 | 青岛科技大学 | A kind of technique and device of activated coke dry method combined desulfurization and denitration |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117205716A (en) * | 2023-11-07 | 2023-12-12 | 福建省铁拓机械股份有限公司 | Purification control method for plant-mixed thermal regeneration tail gas |
| CN117205716B (en) * | 2023-11-07 | 2024-04-16 | 福建省铁拓机械股份有限公司 | Purification control method for plant-mixed thermal regeneration tail gas |
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Application publication date: 20200522 |
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