CN113813784A - Subregion mixes flue gas bypass injection system - Google Patents

Subregion mixes flue gas bypass injection system Download PDF

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Publication number
CN113813784A
CN113813784A CN202111257247.8A CN202111257247A CN113813784A CN 113813784 A CN113813784 A CN 113813784A CN 202111257247 A CN202111257247 A CN 202111257247A CN 113813784 A CN113813784 A CN 113813784A
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flue gas
flue
mixing
gas distribution
main
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Inventor
尚桐
朱建宏
罗代强
王玉荣
邓春
郝延涛
毕凯
牟思武
潘文兴
王玉洪
刘斌
罗志
李淑宏
舒凯
曹帅峰
潘栋
董陈
袁壮
杨晓刚
徐晓涛
杨世极
景云辉
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Guizhou Qianxi Zhongshui Power Generation Co ltd
Xian Thermal Power Research Institute Co Ltd
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Guizhou Qianxi Zhongshui Power Generation Co ltd
Xian Thermal Power Research Institute Co Ltd
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Priority to CN202111257247.8A priority Critical patent/CN113813784A/en
Publication of CN113813784A publication Critical patent/CN113813784A/en
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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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0017—Filter elements installed in a branch of a pipe, e.g. with an y-shaped tubular housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8696—Controlling the catalytic process
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G06F30/28—Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2062—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/10—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces

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Abstract

The invention provides a partitioned mixed flue gas bypass injection system which can realize uniform mixing of bypass high-temperature flue gas and main path medium-temperature flue gas at low load, and can reduce the influence on a main flue at full load, reduce system resistance and prolong the service life of the main flue. The smoke distribution device comprises a plurality of smoke distribution pipelines, wherein the air inlet ends of the smoke distribution pipelines are connected with a bypass flue, and the air outlet ends of the smoke distribution pipelines extend into a main flue; an electric regulating switch device is arranged on the smoke distribution pipeline; a mixed injection device is arranged inside the main flue; the mixing injection device comprises a plurality of mixing scrolls and a plurality of high-temperature flue gas nozzles, the mixing scrolls are arranged at preset positions of flue gas distribution pipelines in the main flue, and the plurality of high-temperature flue gas nozzles are respectively connected with gas outlet ends of the plurality of flue gas distribution pipelines in a one-to-one correspondence manner; the inside of the main flue is divided into a plurality of subareas, and each subarea comprises one or more smoke distribution pipelines.

Description

Subregion mixes flue gas bypass injection system
Technical Field
The invention relates to the technical field of flue gas denitration treatment, in particular to a partitioned mixed flue gas bypass injection system.
Background
The SCR technology is widely used in the industries of thermal power, steel, coking, cement and the like to remove nitrogen oxides in flue gas. The principle is to add a reducing agent NH3Is introduced into the flue gas and reacts with NO in the flue gas under the action of a catalystxReaction to form N2And H2And O. The lowest ammonia spraying temperature of the catalyst is about 320 ℃, and when the flue gas temperature is lower than the active reaction temperature of the catalyst, the activity of the catalyst is low, ammonia escape is increased, and the air preheater is easy to block. The operating state of most thermal power units deviates from the basic design working condition along with the fact that the thermal power units participate in deep peak regulation and gradually become normal, and the smoke temperature is lower than that of the catalyst under the condition of low loadThe reaction temperature.
At present, in the scheme for improving the smoke temperature, the scheme of additionally arranging the economizer bypass is widely adopted due to the advantages of low investment cost, flexible operation, no influence on the high-load smoke temperature and the like. However, the conventional arrangement scheme only directly connects the flue gas bypass with the flue gas main path, and the flue gas is mixed without any mixing measure in the main flue or only by connecting the flue gas bypass with the flue gas main path through a vortex type mixer.
Bypass high temperature flue gas often can be restricted to in the one side flue region that is close to the sprue under the low-load operating mode, and the flue gas only needs several seconds to stay to the catalyst layer from the sprue, relies on the natural mixing of temperature difference can't realize the homogeneous mixing of gas temperature. In addition, if set up the layering mixing arrangement in the flue, the existence of layering mixing arrangement can cause flue gas flow area to diminish in the flue under full load operating mode, and system resistance increases, serious scheduling problem of wearing and tearing.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a partitioned mixed flue gas bypass injection system, which can realize uniform mixing of bypass high-temperature flue gas and main path medium-temperature flue gas at low load on one hand, and can reduce the influence on a main flue at full load on the other hand, reduce the system resistance and prolong the service life of the main flue.
In order to achieve the purpose, the invention provides the following technical scheme:
a zoned mixed flue gas bypass injection system comprises,
the gas inlet ends of the flue gas distribution pipelines are connected with the bypass flue, and the gas outlet ends of the flue gas distribution pipelines extend into the main flue; an electric regulating switch device is arranged on the smoke distribution pipeline;
a mixed injection device is arranged inside the main flue;
the mixing injection device comprises a plurality of mixing scrolls and a plurality of high-temperature flue gas nozzles, the mixing scrolls are arranged at preset positions of flue gas distribution pipelines in the main flue, and the plurality of high-temperature flue gas nozzles are respectively connected with gas outlet ends of the plurality of flue gas distribution pipelines in a one-to-one correspondence manner;
the inside of the main flue is divided into a plurality of subareas, and each subarea comprises one or more smoke distribution pipelines.
Preferably, the device also comprises an ash removal device, the shape of the ash removal device is in an inverted cone shape, and one end of the ash removal device is connected with the air outlet end of the bypass flue; the both sides of ash handling equipment are provided with a plurality of ends of giving vent to anger, a plurality of ends of giving vent to anger of ash handling equipment with a plurality of flue gas distribution pipeline's inlet end one-to-one is connected.
Preferably, the bottom of the ash removing device is provided with an ash bucket.
Preferably, the spacing between adjacent flue gas distribution ducts is the same.
Preferably, the number of mixing scrolls in each partition is 3-4.
Preferably, the mixing scroll forms an angle of 45 ° ± 5 ° with the windward side.
Preferably, the diameter of the mixing scroll is no greater than 1500 mm.
Preferably, the flue gas distribution duct comprises a first flue gas distribution duct arranged outside the main flue and a second flue gas distribution duct arranged inside the main flue, and the first flue gas distribution duct and the second flue gas distribution duct are connected by an elastic device.
Preferably, the mixing scrolls on the same flue gas distribution pipeline in the same partition are arranged in reverse, the mixing scrolls on the adjacent flue gas distribution pipelines in the same partition are arranged in reverse, and the mixing scrolls of the adjacent partitions are symmetrically arranged.
Preferably, the air outlet end of the flue gas distribution pipeline is arranged in parallel with the main flue.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a partitioned mixed flue gas bypass injection system, which is characterized in that a plurality of flue gas distribution pipelines and a plurality of mixed injection devices correspondingly matched with the flue gas distribution pipelines are arranged in a partitioned manner, high-temperature flue gas in a bypass flue is uniformly partitioned and distributed by the plurality of flue gas distribution pipelines, the opening degree of an electric adjusting switch device is controlled, and the uniform mixing degree of the bypass high-temperature flue gas and medium-temperature flue gas in a main flue is dynamically controlled, so that the deep peak regulation requirement is met or the problem that the temperature of denitration flue gas does not meet the active reaction temperature of a catalyst under low load is solved; the flue gas distribution pipeline conveys bypass high-temperature flue gas to the inside back of main flue, through mixing the zoning arrangement of whirlpool dish in the injection apparatus and realizing the homogeneous mixing of high-temperature flue gas and main flue gas, inject into the main flue by the high-temperature flue gas spout again in, accomplish mixed flue gas bypass and pour into, realize anticipated mixed effect with the most reasonable resistance value, reduce the influence to the main flue, reduce the system resistance, extension main flue life provides the powerful support for the high-efficient use of catalyst.
The partition mixed flue gas bypass injection system provided by the invention also considers flue gas fly ash removal, and the ash removal device is arranged between the flue gas distribution pipeline and the bypass flue, so that the flue gas fly ash removal is carried out on the bypass high-temperature flue gas through the ash removal device, the dust amount in the flue gas is reduced, the removed flue gas is collected through the ash bucket arranged at the gas outlet end at the bottom of the dust removal device, the problems of regulation failure and the like caused by the jamming of the regulating damper of the denitration bypass flue gas can be effectively relieved, and the wear of the fly ash on the elastic device arranged in the flue gas distribution pipeline is favorably relieved.
The invention provides a preset calculation model for simulating flue gas mixing intensity, which can select higher mixing intensity as much as possible while considering injection port pressure difference, aims to strengthen mass transfer and heat exchange processes among flue gases, enables the flue gas to be mixed more uniformly and enables the flue gas temperature to be more balanced, and particularly relates to a plurality of related calculation parameters, including the setting of the number n of partitions, the arrangement of the number m of scrolls in each partition and the diameter d of the scrollswWhen the vortex disc is selected and arranged, the setting of the included angle theta between the vortex disc and the windward side improves the mixing intensity, the range of the calculation parameters is the optimal arrangement range obtained by multiple tests, the high mixing intensity can be ensured while the pressure difference of the injection port is considered, and therefore the uniform mixing of the bypass high-temperature flue gas and the main path medium-temperature flue gas is realized, the influence on the main flue is reduced, the system resistance is reduced, and the service life of the main flue is prolonged.
The smoke distribution pipelines inside and outside the main flue are connected through the elastic device, so that the smoke distribution pipelines can freely stretch or bend a small amount in the axial direction in order to compensate additional stress caused by temperature difference or mechanical vibration between bypass high-temperature smoke and main smoke and prevent the allowable compensation amount from being exceeded.
Drawings
FIG. 1 is a schematic diagram of a zoned mixed flue gas bypass injection system according to the present invention;
FIG. 2 is a schematic diagram of a three-dimensional model of a single-zone flue gas nozzle and a mixing scroll in an embodiment of the invention.
In the figure, a flue gas distribution pipeline 1, an elastic device 2, an electric regulating switch device 3, a mixed vortex disk 4, a high-temperature flue gas nozzle 5, an ash hopper 6, an ash removing device 7, a main flue 8 and a bypass flue 9.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in fig. 1, the present invention relates to a zoned mixed flue gas bypass injection system, comprising,
the gas inlet ends of the flue gas distribution pipelines 1 are connected with the bypass flue 9, and the gas outlet ends of the flue gas distribution pipelines 1 extend into the main flue 8; an electric regulating switch device 3 is arranged on the smoke distribution pipeline 1;
and a mixing and injecting device arranged in the main flue 8;
the mixing injection device comprises a plurality of mixing scrolls 4 and a plurality of high-temperature flue gas nozzles 5, wherein the mixing scrolls 4 are arranged at preset positions of the flue gas distribution pipeline 1 in the main flue 8, and the plurality of high-temperature flue gas nozzles 5 are respectively connected with the gas outlet ends of the plurality of flue gas distribution pipelines 1 in a one-to-one correspondence manner;
the main flue 8 is internally divided into a plurality of sections, and each section comprises one or more flue gas distribution pipes 1.
The invention provides a subarea mixed flue gas bypass injection system, which is characterized in that a plurality of flue gas distribution pipelines 1 and a plurality of mixed injection devices correspondingly matched with the flue gas distribution pipelines 1 are arranged in a subarea manner, high-temperature flue gas in a bypass flue 9 is uniformly distributed in a subarea manner by the plurality of flue gas distribution pipelines 1, the opening degree of an electric adjusting switch device 3 is controlled, and the uniform mixing degree of the bypass high-temperature flue gas and medium-temperature flue gas in a main flue 8 is dynamically controlled, so that the requirement of deep peak regulation is met or the problem that the temperature of denitration flue gas does not meet the active reaction temperature of a catalyst under low load is solved; flue gas distribution pipeline 1 carries bypass high temperature flue gas to 8 inside back of main flue, arrange through mixing among the injection apparatus that the zoning of whirlpool dish 4 is arranged and is realized the homogeneous mixing of high temperature flue gas and 8 flue gases of main flue, pour into in the main flue 8 by high temperature flue gas spout 5 again, accomplish mixed flue gas bypass and pour into, realize anticipated mixed effect with the most reasonable resistance value, reduce the influence to main flue 8, reduce the system resistance, prolong 8 life in the main flue, provide powerful support for the high-efficient use of catalyst.
Further, the device also comprises an ash removal device 7, the shape of the ash removal device is inverted cone, and one end of the ash removal device 7 is connected with the air outlet end of the bypass flue 9; a plurality of air outlet ends are arranged on two sides of the ash removal device 7, and the air outlet ends of the ash removal device 7 are connected with the air inlet ends of the flue gas distribution pipelines 1 in a one-to-one correspondence mode.
Still further, the bottom of the ash handling device 7 is provided with an ash hopper 6.
The subarea mixed flue gas bypass injection system also considers flue gas fly ash removal, the ash removal device 7 is arranged between the flue gas distribution pipeline 1 and the bypass flue 9, the bypass high-temperature flue gas is firstly removed through the ash removal device 7, the dust amount in the flue gas is reduced, the removed flue gas is collected through the ash bucket 6 arranged at the gas outlet end at the bottom of the dust removal device, the problems of regulation failure and the like caused by the jamming of the regulating baffle door of the denitration bypass flue 9 can be effectively relieved, and the abrasion of the fly ash to the elastic device 2 arranged on the flue gas distribution pipeline 1 is favorably relieved.
As shown in fig. 2, in the present embodiment, the intervals between the adjacent smoke distribution pipes 1 are the same.
In the present embodiment, the number of mixing scrolls 4 in a single partition is 3 to 4.
In this embodiment, the angle between the mixing scroll 4 and the windward side is preferably about 45 °.
In this embodiment, the diameter of mixing scroll 4 is preferably not greater than 1500 mm.
The invention provides a calculation model of preset simulated flue gas mixing strength, in particular to a plurality of related calculation parameters, including setting of the number n of partitions, the arrangement of the number m of scrolls in each partition and the diameter d of the scrolls, wherein the calculation model comprises the following steps of setting the number m of the scrolls in each partition, and calculating the number of the scrollswWhen the vortex disc is selected and arranged, the setting of the included angle theta between the vortex disc and the windward side improves the mixing intensity, the range of the calculation parameters is the optimal arrangement range obtained by multiple tests, the high mixing intensity can be ensured while the pressure difference of the injection port is considered, the uniform mixing of the bypass high-temperature flue gas and the main path medium-temperature flue gas is realized, the influence on the main flue 8 is reduced, the system resistance is reduced, and the service life of the main flue 8 is prolonged.
In the embodiment, the mixing scroll disks 4 on the same smoke distribution pipeline 1 in the same partition are arranged in the reverse direction, and the mixing scroll disks 4 on the adjacent smoke distribution pipelines 1 in the same partition are arranged in the reverse direction, so that the passing smoke can rotate, and the smoke is mixed more uniformly; the mixing scroll 4 of the adjacent partitions are symmetrically arranged, and the arrangement is a preferred embodiment of the present invention, which can greatly improve the mixing intensity of the flue gas, but the scope of the present invention is not limited to the arrangement.
Specifically, the preset calculation model of the mixing intensity is as follows:
Figure BDA0003324265880000061
wherein S is the mixing intensity, d is the partition equivalent diameter, a is the height of the main flue 8, b is the width of the main flue 8, n is the number of partitions, m is the number of scrolls of each partition, dwIs the diameter of the vortex disk, and theta is the included angle between the vortex disk and the windward side.
In this embodiment, the flue gas distribution pipeline 1 includes a first flue gas distribution pipeline disposed outside the main flue 8 and a second flue gas distribution pipeline disposed inside the main flue 8, and the first flue gas distribution pipeline and the second flue gas distribution pipeline are connected by the elastic device 2.
In particular, the elastic means 2 are metal expansion joints, or elastic members having the same or similar functions may be employed.
The smoke distribution pipelines 1 inside and outside the main flue are connected through the elastic device 2, so that the smoke distribution pipelines can freely stretch or bend a small amount in the axial direction in order to compensate additional stress caused by temperature difference or mechanical vibration between bypass high-temperature smoke and main smoke and prevent the allowable compensation amount from being exceeded.
In this embodiment, the outlet end of the flue gas distribution duct 1 is arranged in parallel with the main flue 8.
The injection process of the partitioned mixed flue gas bypass injection system is as follows:
the high-temperature flue gas of the bypass flue 9 is firstly subjected to fly ash removal and primary flue gas quantity distribution in the ash removal device 7. The dust amount in the flue gas after dust removal is reduced, which is beneficial to slowing down the abrasion of the elastic device 2 and the jamming of the electric regulating switch device 3; the fly ash is collected by the bypass ash hopper 6 and then is conveyed to the denitration ash hopper 6 or is connected to the outlet flue of the denitration reactor.
The preliminarily distributed high-temperature flue gas is uniformly divided into a plurality of strands of flue gas through the flue gas distribution pipeline 1, the elastic device 2 and the electric regulating switch device 3 in sequence and then enters the main flue 8, meanwhile, the opening degree of the electric regulating switch device 3 can be adjusted secondarily according to the temperature measuring point indication value of the denitration reactor, after entering the main flue 8, each flue gas distribution pipeline 1 corresponds to one mixing vortex disk 4 and one high-temperature flue gas nozzle 5, the flue gas of the main flue 8 and the high-temperature flue gas of the bypass flue 9 are rotationally mixed under the action of the mixing vortex disk 4, after the uniform distribution of the flue gas temperature is realized, the flue gas with uniform temperature is injected from the high-temperature flue gas nozzles 5, and the uniform injection of the bypass flue gas is completed.

Claims (10)

1. A regional mixed flue gas bypass injection system is characterized by comprising,
the flue gas distribution device comprises a plurality of flue gas distribution pipelines (1), wherein the gas inlet ends of the flue gas distribution pipelines (1) are connected with a bypass flue (9), and the gas outlet ends of the flue gas distribution pipelines (1) extend into a main flue (8); an electric regulating switch device (3) is arranged on the smoke distribution pipeline (1);
a mixed injection device is arranged in the main flue (8);
the mixing and injecting device comprises a plurality of mixing vortex disks (4) and a plurality of high-temperature flue gas nozzles (5), wherein the mixing vortex disks (4) are arranged at preset positions of flue gas distribution pipelines (1) in a main flue (8), and the plurality of high-temperature flue gas nozzles (5) are respectively connected with the gas outlet ends of the plurality of flue gas distribution pipelines (1) in a one-to-one correspondence manner;
the main flue (8) is internally divided into a plurality of subareas, and each subarea comprises one or more flue gas distribution pipelines (1).
2. The system for injecting the zoned mixed flue gas by-pass as claimed in claim 1, further comprising an ash removal device (7) having an inverted cone shape, wherein one end of the ash removal device (7) is connected with the gas outlet end of the by-pass flue (9); the two sides of the ash removal device (7) are provided with a plurality of air outlet ends, and the air outlet ends of the ash removal device (7) are connected with the air inlet ends of the flue gas distribution pipelines (1) in a one-to-one correspondence mode.
3. The system for injecting the mixed flue gas into the air conditioner of claim 2, wherein an ash hopper (6) is arranged at the bottom of the ash removing device (7).
4. The system according to claim 1, wherein the spacing between adjacent flue gas distribution ducts (1) is the same.
5. A split mixed flue gas bypass injection system according to claim 1, wherein the number of mixing scrolls (4) in each split is 3-4.
6. A split mixed flue gas bypass injection system according to claim 1 wherein the mixing scroll (4) is angled at 45 ° ± 5 ° to the windward side.
7. A split mixed flue gas bypass injection system according to claim 1, wherein the diameter of the mixing scroll (4) is not more than 1500 mm.
8. A divided mixed flue gas bypass injection system according to claim 1, wherein the flue gas distribution duct (1) comprises a first flue gas distribution duct arranged outside the main flue (8) and a second flue gas distribution duct arranged inside the main flue (8), the first and second flue gas distribution ducts being connected by means of the elastic means (2).
9. A zoned mixed flue gas bypass injection system according to claim 1, wherein the mixing scrolls (4) on the same flue gas distribution duct (1) in the same zone are arranged in reverse, the mixing scrolls (4) on adjacent flue gas distribution ducts (1) in the same zone are arranged in reverse, and the mixing scrolls (4) of adjacent zones are arranged symmetrically.
10. The system according to claim 2, wherein the outlet end of the flue gas distribution pipe (1) is arranged in parallel with the main flue (8).
CN202111257247.8A 2021-10-27 2021-10-27 Subregion mixes flue gas bypass injection system Pending CN113813784A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114797452A (en) * 2022-04-18 2022-07-29 西安热工研究院有限公司 Adjustable bypass injection device and adjustment method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114797452A (en) * 2022-04-18 2022-07-29 西安热工研究院有限公司 Adjustable bypass injection device and adjustment method
CN114797452B (en) * 2022-04-18 2023-08-15 西安热工研究院有限公司 Adjustable bypass injection device and adjusting method

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