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CN216790180U - Ammonia coal co-combustion low NOXBurner with a burner head - Google Patents

Ammonia coal co-combustion low NOXBurner with a burner head Download PDF

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Publication number
CN216790180U
CN216790180U CN202220401650.7U CN202220401650U CN216790180U CN 216790180 U CN216790180 U CN 216790180U CN 202220401650 U CN202220401650 U CN 202220401650U CN 216790180 U CN216790180 U CN 216790180U
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Prior art keywords
ammonia
channel
coal
secondary air
air channel
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CN202220401650.7U
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Chinese (zh)
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王一坤
李文锋
丹慧杰
贾兆鹏
周飞
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Xian Xire Boiler Environmental Protection Engineering Co Ltd
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Xian Xire Boiler Environmental Protection Engineering Co Ltd
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Abstract

The utility model discloses an ammonia-coal co-combustion low NOXThe combustor comprises a central air channel, an ammonia channel, a pulverized coal channel, an inner secondary air channel, an outer secondary air channel, a liquid ammonia evaporating coil and a liquid ammonia storage tank; the central air channel, the ammonia channel, the coal powder channel, the inner secondary air channel and the outer secondary air channel are sequentially distributed from inside to outside, and the liquid ammonia evaporating coil is positioned on the outer side of the outer secondary air channel; the outlet of the liquid ammonia storage tank is communicated with the inlet of the liquid ammonia evaporating coil, the outlet of the liquid ammonia evaporating coil is connected with the inlet of the ammonia channel, and the burner adopts NH3And coal as fuel to reduce CO2And (4) discharging.

Description

Ammonia coal co-combustion low NOXBurner apparatus
Technical Field
The utility model belongs to the field of thermal power generation utilization, and relates to an ammonia-coal mixtureBurning low NOXA burner.
Background
For realizing coal-electric machine set CO2The goal of emission reduction, Carbon dioxide Capture, Utilization and Storage (CCUS) technology, is becoming an important development direction of coal-electric units. For coal-electric units, the CCUS technology is adopted, and in addition to the need of reducing the cost, the capture of CO is more important to realize2Utilization and storage of currently large-scale captured CO2The method is mainly used for oil displacement of oil fields or sealing of salt water layers, but is limited by geological conditions, and not all coal-fired units have CO2And (5) sealing and storing. Therefore, the zero-carbon fuel is combusted to form a coal-fired unit to reduce CO2An important route for discharge.
China currently has the coal-fired unit with the largest world upper machine loading scale, faces huge carbon emission reduction pressure, but the large-scale combustion of non-hydrocarbon fuel by the coal-fired unit to reduce CO is not seen at present2Successful case of emissions.
NH3Is a typical zero-carbon fuel, NH at normal temperature3The liquefaction pressure of the liquefied gas is only 1.03MPa and is far lower than H at normal temperature2The liquefaction pressure of 70MPa can be stored and transported by utilizing the existing infrastructure such as a natural gas pipeline, and the liquefied natural gas has remarkable advantages when being used as a zero-carbon fuel.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides an ammonia coal co-combustion low-NOXA burner using NH3And coal as fuel to reduce CO2And (4) discharging.
In order to achieve the aim, the ammonia coal co-combustion low NO of the utility modelXThe combustor comprises a central air channel, an ammonia channel, a pulverized coal channel, an inner secondary air channel, an outer secondary air channel, a liquid ammonia evaporating coil and a liquid ammonia storage tank;
the central air channel, the ammonia channel, the coal powder channel, the inner secondary air channel and the outer secondary air channel are sequentially distributed from inside to outside, and the liquid ammonia evaporating coil is positioned on the outer side of the outer secondary air channel;
the outlet of the liquid ammonia storage tank is communicated with the inlet of the liquid ammonia evaporating coil, and the outlet of the liquid ammonia evaporating coil is connected with the inlet of the ammonia channel.
The outlet of the liquid ammonia storage tank is communicated with the inlet of the liquid ammonia evaporating coil pipe through a liquid ammonia adjusting valve.
The device also comprises an ammonia gas pressure stabilizing tank; the outlet of the liquid ammonia evaporating coil is connected with the inlet of an ammonia pressure stabilizing tank, and the outlet of the ammonia pressure stabilizing tank is connected with the inlet of an ammonia channel.
The outlet of the ammonia pressure stabilizing tank is connected with the inlet of the ammonia channel through an ammonia regulating valve and an ammonia check valve group.
An ammonia gas regulator is arranged in the ammonia gas channel.
An inner secondary air regulator is arranged in the inner secondary air channel.
An outer secondary air regulator is arranged in the outer secondary air channel.
The ammonia regulator, the inner secondary air regulator and the outer secondary air regulator all comprise a plurality of blades, wherein the blades are connected through a connecting mechanism.
The utility model has the following beneficial effects:
the ammonia coal mixed combustion low NO of the utility modelXThe combustor is when concrete operation, the liquid nitrogen utilizes the radiant heat around the combustor to become the ammonia through liquid ammonia evaporating coil, save the required heat of liquid ammonia evaporation, the cooling capacity who utilizes liquid ammonia simultaneously avoids conventional coal burner because the problem that the high temperature is burnt and is lost, in addition, place in the buggy passageway in the ammonia passageway, utilize the inflammable characteristics of ammonia ratio buggy to play the purpose of surely firing, the free radical through pulverized coal combustion production simultaneously, the interact of coke and ammonia, reduce the NO that pulverized coal and ammonia combustion produced, the NO that produces, the ammonia combustion is burnt to be mixed to the gasxAnd CO2. Meanwhile, the central air channel is arranged to adjust the ignition point position of the mixed burner, so that the purpose of adapting to stable mixed combustion of different coal types and ammonia gas is achieved.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a perspective view of the present invention.
Wherein, 1 is a central air channel, 2 is an ammonia channel, 3 is a coal powder channel, 4 is an inner overgrate air channel, 5 is an outer overgrate air channel, 6 is an ammonia regulator, 7 is an inner overgrate air regulator, 8 is an outer overgrate air regulator, 9 is a liquid ammonia evaporating coil, 10 is an ammonia check valve group, 11 is an ammonia regulating valve, 12 is an ammonia pressure stabilizing tank, 13 is a liquid ammonia regulating valve, and 14 is a liquid ammonia storage tank.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the utility model. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1 and 2, the ammonia-coal co-combustion low-NO fuel of the utility modelXThe combustor comprises a central air channel 1, an ammonia channel 2, a coal powder channel 3, an inner secondary air channel 4, an outer secondary air channel 5, an ammonia regulator 6, an inner secondary air regulator 7, an outer secondary air regulator 8, a liquid ammonia evaporating coil 9, an ammonia check valve group 10, an ammonia regulating valve 11, an ammonia pressure stabilizing tank 12 and a liquid ammonia regulating valve13 and a liquid ammonia storage tank 14;
the central air channel 1, the ammonia channel 2, the coal powder channel 3, the inner secondary air channel 4 and the outer secondary air channel 5 are distributed in sequence from inside to outside, and the liquid ammonia evaporating coil 9 is positioned on the outer side of the outer secondary air channel 5;
an outlet of the liquid ammonia storage tank 14 is communicated with an inlet of the liquid ammonia evaporation coil 9 through a liquid ammonia regulating valve 13, an outlet of the liquid ammonia evaporation coil 9 is connected with an inlet of an ammonia pressure stabilizing tank 12, and an outlet of the ammonia pressure stabilizing tank 12 is connected with an inlet of the ammonia channel 2 through an ammonia regulating valve 11 and an ammonia check valve group 10;
the ammonia regulator 6 is positioned in the ammonia channel 2, the inner overgrate air regulator 7 is positioned in the inner overgrate air channel 4, and the outer overgrate air regulator 8 is positioned in the outer overgrate air channel 5.
The ammonia gas regulator 6, the inner secondary air regulator 7 and the outer secondary air regulator 8 respectively comprise a plurality of blades, wherein the blades are connected through a connecting mechanism, and the adjustment of the air volume of the medium flowing through and the swirl strength is realized by adjusting the angle of each blade, and typically, the number of the blades is 16, 24 or 36.
It is noted that ammonia functions as a coolant, fuel, and NO simultaneously in the present inventionxThe reducing agent can reduce CO while preventing burner burning loss by cooling2And NOxAnd (4) discharging the amount.
The working process of the utility model is as follows:
liquid ammonia that 14 liquid ammonia storage tanks output enters into liquid ammonia evaporating coil 9 through liquid ammonia governing valve 13, utilizes the absorptive radiant heat of combustor to change liquid ammonia into ammonia, then gets into ammonia surge tank 12, and the ammonia of ammonia surge tank 12 output gets into in the ammonia passageway 2 through ammonia governing valve 11 and ammonia contrary valves 10 that ends.
When the device is used, the flow and the rotational flow strength of the ammonia regulator 6, the inner secondary air regulator 7 and the outer secondary air regulator 8 can be regulated according to the characteristics of coal quality and the mixed combustion proportion of coal powder and ammonia, and NO of combustion products is greatly reduced on the premise of ensuring combustionxAnd (4) concentration.
The utility model can utilize liquid ammonia to simultaneously carry outIs cooling medium of combustor, zero-carbon fuel and NOxReducing agent for reducing CO of burner by direct action reaction of ammonia gas and coal powder2And NOxDischarge of CO for coal-fired units2And NOxEmission reduction has important significance.

Claims (8)

1. Ammonia coal co-combustion low NOXThe combustor is characterized by comprising a central air channel (1), an ammonia gas channel (2), a pulverized coal channel (3), an inner secondary air channel (4), an outer secondary air channel (5), a liquid ammonia evaporating coil (9) and a liquid ammonia storage tank (14);
the central air channel (1), the ammonia channel (2), the coal powder channel (3), the inner secondary air channel (4) and the outer secondary air channel (5) are sequentially distributed from inside to outside, and the liquid ammonia evaporating coil (9) is positioned on the outer side of the outer secondary air channel (5);
the outlet of the liquid ammonia storage tank (14) is communicated with the inlet of the liquid ammonia evaporating coil (9), and the outlet of the liquid ammonia evaporating coil (9) is connected with the inlet of the ammonia channel (2).
2. The ammonia-coal co-combustion low-NO of claim 1XThe combustor is characterized in that an outlet of a liquid ammonia storage tank (14) is communicated with an inlet of a liquid ammonia evaporation coil (9) through a liquid ammonia adjusting valve (13).
3. The ammonia-coal co-combustion low-NO of claim 1XThe burner is characterized by also comprising an ammonia gas pressure stabilizing tank (12); the outlet of the liquid ammonia evaporating coil (9) is connected with the inlet of an ammonia pressure stabilizing tank (12), and the outlet of the ammonia pressure stabilizing tank (12) is connected with the inlet of the ammonia channel (2).
4. The ammonia-coal co-combustion low NO according to claim 3XThe burner is characterized in that an outlet of an ammonia pressure stabilizing tank (12) is connected with an inlet of an ammonia channel (2) through an ammonia regulating valve (11) and an ammonia check valve group (10).
5. The ammonia-coal co-combustion low NO according to claim 1XBurner, characterized in thatAn ammonia gas regulator (6) is arranged in the ammonia gas channel (2).
6. The ammonia-coal co-combustion low NO according to claim 5XThe burner is characterized in that an inner secondary air regulator (7) is arranged in the inner secondary air channel (4).
7. The ammonia-coal co-combustion low NO according to claim 6XThe burner is characterized in that an outer secondary air regulator (8) is arranged in the outer secondary air channel (5).
8. The ammonia-coal co-combustion low NO according to claim 7XThe burner is characterized in that the ammonia gas regulator (6), the inner secondary air regulator (7) and the outer secondary air regulator (8) respectively comprise a plurality of blades, wherein the blades are connected through a connecting mechanism.
CN202220401650.7U 2022-02-24 2022-02-24 Ammonia coal co-combustion low NOXBurner with a burner head Active CN216790180U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220401650.7U CN216790180U (en) 2022-02-24 2022-02-24 Ammonia coal co-combustion low NOXBurner with a burner head

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Application Number Priority Date Filing Date Title
CN202220401650.7U CN216790180U (en) 2022-02-24 2022-02-24 Ammonia coal co-combustion low NOXBurner with a burner head

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CN216790180U true CN216790180U (en) 2022-06-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117927949A (en) * 2024-01-15 2024-04-26 天津大学 Novel combustor for ammonia coal mixed combustion and application method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117927949A (en) * 2024-01-15 2024-04-26 天津大学 Novel combustor for ammonia coal mixed combustion and application method thereof

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