CN212142070U - Ammonia gas uniform distributor for SNCR denitration process - Google Patents
Ammonia gas uniform distributor for SNCR denitration process Download PDFInfo
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- CN212142070U CN212142070U CN202020002722.1U CN202020002722U CN212142070U CN 212142070 U CN212142070 U CN 212142070U CN 202020002722 U CN202020002722 U CN 202020002722U CN 212142070 U CN212142070 U CN 212142070U
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Abstract
The utility model discloses an ammonia distributor for SNCR denitration process, which comprises an ammonia main pipe (1), an ammonia branch pipe (2), an ammonia injection pipe (3), an ammonia supply pipe (4) and a supporting frame (5); the ammonia main pipe is arranged in the hearth and is communicated with the ammonia supply pipe through a connecting pipeline (11); the ammonia branch pipe is communicated with the ammonia main pipe and is arranged in a flue gas reaction area of the hearth through a support frame fixed on a water-cooled wall (61); each ammonia branch pipe is connected with a plurality of ammonia injection pipes, the ammonia injection pipes are provided with a plurality of ammonia injection points (31), and the ammonia injection points are uniformly distributed in a grid shape in the flue gas reaction zone; the ammonia is uniformly sprayed in the flue gas reaction area through an ammonia supply pipe, an ammonia main pipe, an ammonia branch pipe, an ammonia spraying pipe and an ammonia spraying point. The utility model discloses make the ammonia evenly distributed in furnace best reaction temperature interval, ensure nitrogen oxide intensive mixing in ammonia and the flue gas, the denitration is effectual.
Description
Technical Field
The utility model relates to a flue gas mixing apparatus for when burning furnace denitration, especially relate to an ammonia uniform distributor that is used for SNCR (selective non-catalytic reduction) denitration technology.
Background
With the development of social economy and technology, different types of incineration kilns and boilers are widely used in various industries, and along with the development of smoke with different pollutant components and physical and chemical properties, the smoke is generated.
NO produced in the combustion process of boiler and incineratorXOne part is from the decomposition and conversion of the N-containing organic matter in the fuel, and the other part is from the generation of nitrogen in the air under the oxidizing atmosphere and high temperature conditions. NOx has NO and NO2、N2O、N2O3、N2O7In various forms, NOx in fuel incineration flue gas is mainly NO, the concentration of the NOx is rapidly increased along with the increase of the temperature, the longer the flue gas retention time in a high-temperature region is, the more NO is generated, and the low temperature is favorable for NO2And (4) generating. The reaction types according to the nitrogen oxide production mechanism are classified into: thermal type, fuel type, rapid type, etc.
At present, the technology such as low-nitrogen combustion is adopted to reduce NO at the sourceXIn addition to the production amount, the traditional flue gas denitration technology is mainly divided into SNCR (selective non-catalytic reduction) denitration and SCR (selective catalytic reduction) denitration, and the difference between the SNCR denitration and the SCR denitration lies in whether a catalyst is used for reducing the reaction condition. The catalyst widely used in general is urea or ammonia water, NO is reacted under certain reaction conditionXReduction to N2And water.
The reaction conditions of the SCR denitration technology are mild, and the low-temperature catalyst is used at 220 DEG CI.e. can react and NOXThe removal rate is high. However, if the SCR process is adopted, referring to the high dust arrangement form of the mainstream process of the coal-fired power plant at present, under the use conditions of a biomass power plant, for example, due to high content of flue gas dust and alkali metals (Na, K), the SCR catalyst is abraded, blocked, or polluted and poisoned, so that the service life of the catalyst is greatly reduced. And the investment of an SCR process system is high, the temperature of the flue gas after the bag-type dust remover is not enough to support the completion of the catalytic reduction reaction, and a large amount of steam is used for heating, so that the running cost is high. So that NO is present in many casesXThe SNCR with lower removal rates is still the optimal choice.
In the prior SNCR denitration process, an amino liquid denitration agent such as urea or ammonia water is generally used as a catalyst, and the defects are that the reaction temperature interval is strict: if ammonia water is used, the smoke temperature needs to be controlled within the range of 850-1050 ℃, and the reaction time is more than 1 s; if urea is used, the temperature window is also shifted up by 50 ℃. While this is easy to achieve in certain applications (e.g., pulverized coal furnaces, glass furnaces, or smelting furnaces), the use of SNCR is highly inefficient in denitration at lower furnace temperatures (e.g., biomass boilers and waste incinerators).
In addition, because the denitrifier that uses among the prior art is liquid, liquid denitrifier need just react with nitrogen oxide after contacting the gasification with high temperature flue gas after getting into furnace, and gasification process has consumed a large amount of reaction time, has caused the not good problem of denitration effect. Liquid denitration agent need spout into furnace through fluid or high-pressure spray gun in, need consume a large amount of compressed air, and difficult assurance such as atomization effect, jet distance to influence the reaction of liquid denitration agent after atomizing or gasification and nitrogen oxide, further caused the not good problem of denitration effect.
Disclosure of Invention
An object of the utility model is to provide an ammonia uniform distributor for SNCR denitration technology enables ammonia evenly distributed in furnace's SNCR optimum reaction temperature interval, ensures the intensive mixing of nitrogen oxide in ammonia and the flue gas, and the denitration is effectual.
The utility model discloses a realize like this:
an ammonia gas uniform distributor for SNCR denitration process comprises an ammonia gas main pipe, ammonia gas branch pipes, an ammonia gas injection pipe, an ammonia gas supply pipe and a supporting frame; the ammonia main pipe is arranged in the hearth and is circumferentially arranged along the inner side of the water-cooled wall of the furnace body, and an air inlet of the ammonia main pipe penetrates through the water-cooled wall and the furnace wall to extend out of the furnace body and is communicated with an ammonia supply pipe through a connecting pipeline; a plurality of gas outlets are arranged on the ammonia main pipe at intervals, gas inlets of the ammonia branch pipes are respectively communicated with the gas outlets of the ammonia main pipe, and the ammonia branch pipes are arranged in a flue gas reaction zone of the hearth through a support frame fixed on a water-cooled wall; a plurality of air outlets are arranged on each ammonia branch pipe at intervals, each ammonia branch pipe is correspondingly connected with a plurality of ammonia injection pipes through the plurality of air outlets, and each ammonia injection pipe is provided with a plurality of ammonia injection points so that the ammonia injection points are uniformly distributed in a grid shape in the flue gas reaction zone; the ammonia is uniformly sprayed in the flue gas reaction area through an ammonia supply pipe, an ammonia main pipe, an ammonia branch pipe, an ammonia spraying pipe and an ammonia spraying point.
The ammonia main pipe comprises two unit main pipes which are symmetrically arranged, wherein the air outlet of one unit main pipe is communicated with the ammonia branch pipes distributed in the middle of the hearth, and the air outlet of the other unit main pipe is communicated with the ammonia branch pipes distributed on two sides of the hearth.
The air inlets of the two unit main pipes are connected to the ammonia gas supply pipe through connecting pipelines, and each connecting pipeline is provided with a regulating valve.
The ammonia spraying direction of a plurality of ammonia spraying points on each ammonia spraying pipe is the same as the direction of smoke in the hearth, the ammonia spraying points are arranged into two rows along the radial direction of the ammonia spraying pipes, and the ammonia spraying directions of the two rows of ammonia spraying points form an obtuse included angle.
The included angle of the ammonia spraying directions of the two rows of ammonia gas spraying points is 120 degrees.
The ammonia gas injection point is in a through hole structure.
If the furnace body is a biomass grate boiler, the reaction area of the flue gas in the hearth is the furnace body section range with the height of 2-3m below the secondary air inlet.
If the furnace body is a biomass fluidized bed boiler or a waste incineration boiler, the furnace cavity smoke reaction area is the furnace body section range with the height of 2-3m in front of the inlet of the screen superheater.
The ammonia branch pipes are arranged in one layer or a plurality of layers in the smoke reaction area.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model discloses because the gasification or the pyrolysis process with liquid denitration agent are accomplished in the furnace body outside to directly send into gaseous state denitration agent in furnace and react with the flue gas intensive mixing, avoided liquid denitration agent gasification in furnace, make gaseous state denitration agent have longer reaction time with nitrogen oxide, the reaction is also more abundant, thereby can adapt to the reaction temperature window of broad to 550-.
2. The utility model discloses an ammonia sprays the point and is grid form evenly arranges in furnace flue gas reaction interval, can ensure that gaseous state denitrifier evenly spouts into, under the same injection condition, gaseous state denitrifier can be more abundant with the mixture of flue gas, longer with nitrogen oxide's reaction time to improve denitration effect.
3. The utility model discloses can adjust the injection point position of denitration agent through the mounted position of adjusting braced frame and ammonia branch pipe, ensure the denitration agent injection volume of same one deck grid middle part and both sides, also ensure the injection volume of different layers of grid denitration agent to adapt to the difference of different furnace temperature, initial nitrogen oxide concentration, flue gas velocity of flow etc. the maximum mixed reaction effect that satisfies.
4. The utility model discloses directly spout gaseous state denitrifier into furnace, need not supplementary injection such as diluent, compressed air, cooling air, spray gun nozzle, reduced consumption and cost, the operation is also safer.
5. The utility model is of a closed structure, no waste gas and waste water discharge, energy saving and environmental protection.
The utility model discloses an ammonia injection point that evenly arranges makes the ammonia of spouting evenly distributed in furnace SNCR optimum reaction temperature interval, ensures nitrogen oxide's intensive mixing and reaction in ammonia and the flue gas, reduces the gasification time of liquid denitration agent to extension reaction time improves the denitration effect, can adapt to the reaction temperature window of broad.
Drawings
FIG. 1 is a perspective view of an ammonia gas distributor used in the SNCR denitration process of the utility model;
FIG. 2 is a top view of the ammonia gas distributor for SNCR denitration process of the present invention;
FIG. 3 is a cross-sectional view of an ammonia gas injection pipe in the ammonia gas distributor for SNCR denitration process of the present invention;
FIG. 4 is a sectional view of the ammonia gas distributor used in the SNCR denitration process of the present invention;
figure 5 is the flow chart of the operation process of the ammonia gas uniform distributor used for the SNCR denitration process.
In the figure, 1 ammonia main pipe, 11 connecting pipes, 12 regulating valves, 2 ammonia branch pipes, 3 ammonia injection pipes, 31 ammonia injection points, 4 ammonia supply pipes, 5 supporting frames, 6 furnace bodies, 61 water-cooled walls, 62 furnace walls and 100 ammonia distributors.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1 and 4, an ammonia gas uniform distributor for SNCR denitration process comprises an ammonia gas main pipe 1, an ammonia gas branch pipe 2, an ammonia gas injection pipe 3, an ammonia gas supply pipe 4 and a support frame 5; the ammonia main pipe 1 is arranged in the hearth and is circumferentially arranged along the inner side of a water-cooled wall 61 of the furnace body, an air inlet (not shown in the figure) of the ammonia main pipe 1 penetrates through the water-cooled wall 61 and the furnace wall 62 and extends out of the furnace body, and the air inlet of the ammonia main pipe 1 is communicated with an ammonia supply pipe 4 through a connecting pipeline 11; referring to the attached drawings 1 and 2, a plurality of air outlets (not shown in the drawings) are arranged on the ammonia main pipe 1 at intervals, air inlets (not shown in the drawings) of the ammonia branch pipes 2 are respectively communicated with the air outlets of the ammonia main pipe 1, and the ammonia branch pipes 2 are uniformly arranged in a flue gas reaction zone of a hearth through a support frame 5 fixed on a water-cooled wall 61; a plurality of air outlets (not shown in the figure) are arranged on each ammonia branch pipe 2 at intervals, and each ammonia branch pipe 2 is correspondingly connected with a plurality of ammonia injection pipes 3 through the plurality of air outlets, please refer to fig. 3, each ammonia injection pipe 3 is provided with a plurality of ammonia injection points 31, so that the ammonia injection points 31 are uniformly distributed in a grid shape in the flue gas reaction zone; ammonia gas is uniformly sprayed in the flue gas reaction area through an ammonia gas supply pipe 4, an ammonia gas main pipe 1, an ammonia gas branch pipe 2, an ammonia gas injection pipe 3 and an ammonia gas injection point 31.
Referring to the attached figure 2, the ammonia main pipe 1 comprises two unit main pipes which are symmetrically arranged, wherein the air outlet of one unit main pipe is communicated with the ammonia branch pipes 2 which are distributed in the middle of the furnace, and the air outlet of the other unit main pipe is communicated with the ammonia branch pipes 2 which are distributed on two sides of the furnace. Because the flue gas velocity and the temperature of the middle part and the two sides of the hearth may have difference, the ammonia spraying requirements under different flue gas velocity and temperature working conditions can be met by respectively and independently supplying gas.
The air inlet that two units were responsible for all be connected to ammonia supply pipe 4 through connecting tube 11, and all install governing valve 12 on every connecting tube 11, can be used to adjust the ammonia or the gaseous flow of sweeping through connecting tube 11 of flowing through, governing valve 12 can adopt manual control valve or external controlgear's automatic regulating valve to the gaseous velocity of flow of accurate control is in order to further adapt to the velocity of flow and the temperature difference of furnace center and marginal flue gas, the at utmost satisfies the mixed effect of ammonia and flue gas.
Referring to fig. 3, the ammonia spraying direction of the ammonia gas spraying points 31 on each ammonia gas spraying pipe 3 is the same as the direction of the flue gas in the furnace, and the ammonia gas spraying points 31 are arranged in two rows along the radial direction of the ammonia gas spraying pipe 3, and the ammonia spraying directions (as shown by arrows in fig. 3) of the two rows of ammonia gas spraying points 31 form an obtuse included angle, so that the ammonia gas distributors form a downstream staggered arrangement form.
Preferably, the included angle of the ammonia spraying directions of the two rows of ammonia gas spraying points 31 is 120 degrees, and the range of staggered ammonia spraying can cover the section of the whole furnace body.
The ammonia injection point 31 is of a through hole structure, a high-pressure or fluid spray gun is not required to be arranged, compressed air is not required to be consumed to assist the injection of the denitrifier, the injection distance is easier to control, and the ammonia can be ensured to be uniformly injected into the hearth.
Referring to fig. 5, if the furnace body is a biomass grate boiler, the furnace body section range with the height of 2-3m below the secondary air inlet is preferably selected as the furnace body section range of the furnace body in the furnace flue gas reaction zone, so that the flue gas reaction temperature in the zone is the optimum SNCR reaction temperature in the biomass grate boiler, and the denitration effect is ensured.
If the furnace body is a biomass fluidized bed boiler or a waste incineration boiler, the furnace body section range with the height of 2-3m in front of the inlet of the screen superheater is preferably selected as the furnace body section range of the furnace body section range, so that the flue gas reaction temperature in the furnace body section range is the optimum SNCR reaction temperature position in the biomass fluidized bed boiler or the waste incineration boiler, and the denitration effect is ensured.
Referring to the attached drawings 1 to 5, the ammonia gas branch pipes 2 are arranged in a flue gas reaction zone in one or more layers, and can be adjusted and arranged according to actual working conditions such as the height of the optimal flue gas reaction zone of the hearth, the running state of a furnace body, flue gas characteristics and the like, and preferably in one or two layers. The arrangement density of the ammonia injection points 31 with the grid structure can also be adjusted and arranged according to the actual working conditions such as the size of the furnace body, the running state of the furnace body, the flue gas characteristics and the like, and the number of the ammonia injection points 31 is preferably 200-800.
Preferably, the ammonia main pipe 1, the ammonia branch pipe 2, the ammonia injection pipe 3, the ammonia supply pipe 4 and the support frame 5 can be made of high-temperature-resistant 310S stainless steel, the temperature resistance, the wear resistance and the span are fully considered, coke hanging is avoided, and the pipelines can be communicated and fixed in a welding mode, a flange connection mode and the like. The supporting frame 5 can be installed on the membrane of the water wall 61 in a bolt multipoint fixing mode, reinforcing ribs can be additionally installed at corresponding positions outside the furnace wall 62 to ensure the installation stability of the fixing points of the supporting frame 5, and the ammonia branch pipe 2 can be fixed on the supporting frame 5 in a screwing mode or a welding mode and the like, so that the ammonia distributor can expand freely without generating expansion stress. Connecting sleeves are reserved on the water wall 61 and the furnace wall 62, the ammonia main pipe 1 is connected with flanges of the connecting sleeves, heat preservation and pouring materials are arranged, the ammonia main pipe 1 is ensured to be safely arranged when penetrating through the furnace wall, and the closed structure is ensured not to have harmful gases such as ammonia and the like to escape.
When the furnace body operates, ammonia water in the denitrifying agent storage system is prepared into ammonia gas through an ammonia gas preparation system, then enters an ammonia gas main pipe 1 through an ammonia gas supply pipe 4 through a connecting pipeline 11, is conveyed to an ammonia gas injection pipe 3 through an ammonia gas branch pipe 2, and is finally injected through ammonia gas injection points 31 uniformly arranged in the optimal reaction temperature interval of the hearth SNCR to react with nitrogen oxides in flue gas in the hearth, so that the aim of denitrification is fulfilled, and the reaction formula is as follows:
after the reaction is finished or in the reaction gap, compressed air can be introduced through the ammonia gas supply pipe 4 and used for intermittently purging the ammonia gas injection point 31, so that the spray hole of the ammonia gas injection point 31 is not blocked.
Example 1:
referring to FIGS. 1 to 5, the furnace body 6 is a biomass grate boiler, and the emission concentration of nitrogen oxides is 250 mg/Nm of 220-3The temperature in the hearth is 730-870 ℃, and the smoke temperature before the platen superheater is 750 ℃. The excess air coefficient at the outlet of the hearth is 1.4; adopts the traditional SNCR process using ammonia water as a denitrifier on NH3：NOxThe concentration of nitrogen oxides in the exhaust gas is still 120-140mg/Nm when the stoichiometric ratio of (1.8)3Meanwhile, the emission can not reach the standard.
The denitration agent storage system and the denitration agent supply system both adopt old equipment in the original denitration process, and an ammonia gas preparation system is newly arranged for gasifying or pyrolyzing ammonia water to form ammonia gas. An ammonia gas uniform distributor 100 is arranged at the throat position of the hearth: arrange four ammonia branch pipes 2 of individual layer, four ammonia branch pipes 2 equidistant distribution are in the furnace, ammonia injection pipe 3 equidistant distribution in ammonia branch pipe 2, 200 ammonia injection points 31 of grid-like equipartition totally, are responsible for 1 intercommunication ammonia branch pipe 2 and ammonia supply pipe 4 through two ammonia for the supply of ammonia. Denitration agent20 percent ammonia water is used as a reducing agent, secondary air is used as an evaporation heat source, and 5000Nm of secondary hot air is extracted3And h, accounting for about 8.33 percent of the total secondary air, atomizing the ammonia water in the evaporator, evaporating the ammonia water into gaseous state, and uniformly spraying the gaseous state into the hearth through ammonia gas spraying points 31 which are uniformly distributed in a grid shape. After operation, NH3：NOxHas a stoichiometric ratio of 1.5 and a nitrogen oxide emission of less than 50mg/Nm for a prolonged period of time3The ultra-clean emission standard is achieved, and the ammonia escape index is less than 8 PPM.
Example 2:
referring to FIGS. 1 to 5, the furnace body 6 is a circulating fluidized bed boiler with a concentration of 300mg/Nm of nitrogen oxides3The denitration process adopts the traditional SNCR, takes urea solution (with the mass concentration of 40%) as a reducing agent, and designs the denitration efficiency to be 35%.
The denitration agent storage system and the denitration agent supply system both adopt old equipment in the original denitration process, and an ammonia gas preparation system is newly arranged for gasifying or pyrolyzing ammonia water to form ammonia gas. An ammonia gas uniform distributor 100 is arranged at the position of 850 ℃ of a hearth: arrange four ammonia branch pipes 2 of individual layer, four ammonia branch pipes 2 equidistant distribution are in the furnace, ammonia injection pipe 3 equidistant distribution in ammonia branch pipe 2, 200 ammonia injection points 31 of grid-like equipartition totally, are responsible for 1 intercommunication ammonia branch pipe 2 and ammonia supply pipe 4 through two ammonia for the supply of ammonia. The denitrifier adopts 20% ammonia water as a reducing agent, the evaporation heat source adopts secondary air, and 5000Nm of the secondary hot air is extracted3And h, accounting for about 8.33 percent of the total secondary air, atomizing the ammonia water in the evaporator, evaporating the ammonia water into gaseous state, and uniformly spraying the gaseous state into the hearth through ammonia gas spraying points 31 which are uniformly distributed in a grid shape. After operation, NH3：NOxHas a stoichiometric ratio of 1.7 and a nitrogen oxide emission of less than 100mg/Nm for a prolonged period of time3The ammonia escape index is greatly superior to the national standard and the EU2010 standard and is less than 8 PPM.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (9)
1. An ammonia uniform distributor for SNCR denitration technology, which is characterized in that: comprises an ammonia main pipe (1), an ammonia branch pipe (2), an ammonia injection pipe (3), an ammonia supply pipe (4) and a supporting frame (5); the ammonia main pipe (1) is arranged in the hearth and is circumferentially arranged along the inner side of a water-cooled wall (61) of the furnace body, and an air inlet of the ammonia main pipe (1) penetrates through the water-cooled wall (61) and the furnace wall (62) to extend out of the furnace body and is communicated with an ammonia supply pipe (4) through a connecting pipeline (11); a plurality of gas outlets are arranged on the ammonia main pipe (1) at intervals, gas inlets of the ammonia branch pipes (2) are respectively communicated with the gas outlets of the ammonia main pipe (1), and the ammonia branch pipes (2) are arranged in a flue gas reaction zone of the hearth through a support frame (5) fixed on a water-cooled wall (61); a plurality of air outlets are arranged on each ammonia branch pipe (2) at intervals, each ammonia branch pipe (2) is correspondingly connected with a plurality of ammonia injection pipes (3) through the plurality of air outlets, and a plurality of ammonia injection points (31) are arranged on each ammonia injection pipe (3), so that the ammonia injection points (31) are uniformly distributed in a grid shape in a flue gas reaction region; ammonia gas is uniformly sprayed in the flue gas reaction region through an ammonia gas supply pipe (4), an ammonia gas main pipe (1), an ammonia gas branch pipe (2), an ammonia gas injection pipe (3) and an ammonia gas injection point (31).
2. The ammonia gas distributor for SNCR denitration process of claim 1, which is characterized in that: the ammonia main pipe (1) comprises two unit main pipes which are symmetrically arranged, wherein the air outlet of one unit main pipe is communicated with the ammonia branch pipes (2) which are distributed in the middle of the hearth, and the air outlet of the other unit main pipe is communicated with the ammonia branch pipes (2) which are distributed on two sides of the hearth.
3. The ammonia gas distributor for SNCR denitration process of claim 2, which is characterized in that: the air inlets of the two unit main pipes are connected to the ammonia gas supply pipe (4) through connecting pipelines (11), and each connecting pipeline (11) is provided with a regulating valve (12).
4. The ammonia gas distributor for SNCR denitration process of claim 1, which is characterized in that: the ammonia spraying direction of the ammonia spraying points (31) on each ammonia spraying pipe (3) is in the same direction as the flue gas in the hearth, the ammonia spraying points (31) are arranged into two rows along the radial direction of the ammonia spraying pipes (3), and the ammonia spraying directions of the two rows of ammonia spraying points (31) form an obtuse angle.
5. The ammonia gas distributor for SNCR denitration process of claim 4, which is characterized in that: the included angle of the ammonia spraying directions of the two rows of ammonia gas spraying points (31) is 120 degrees.
6. The ammonia gas distributor for SNCR denitration process of claim 1, 4 or 5, which is characterized in that: the ammonia gas injection point (31) is of a through hole structure.
7. The ammonia gas distributor for SNCR denitration process of claim 1, which is characterized in that: if the furnace body is a biomass grate boiler, the reaction area of the flue gas in the hearth is the furnace body section range with the height of 2-3m below the secondary air inlet.
8. The ammonia gas distributor for SNCR denitration process of claim 1, which is characterized in that: if the furnace body is a biomass fluidized bed boiler or a waste incineration boiler, the furnace cavity smoke reaction area is the furnace body section range with the height of 2-3m in front of the inlet of the screen superheater.
9. The ammonia gas distributor for SNCR denitration process of claim 1, which is characterized in that: the ammonia branch pipes (2) are arranged in one layer or a plurality of layers in the smoke reaction area.
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| CN113091050A (en) * | 2021-04-07 | 2021-07-09 | 贵州黔西中水发电有限公司 | Optimization system combining tail denitration and in-furnace combustion and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113091050A (en) * | 2021-04-07 | 2021-07-09 | 贵州黔西中水发电有限公司 | Optimization system combining tail denitration and in-furnace combustion and control method thereof |
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