CN113509833B - Synchronous desulfurization and denitrification agent in solid waste base furnace and preparation method and application thereof - Google Patents
Synchronous desulfurization and denitrification agent in solid waste base furnace and preparation method and application thereof Download PDFInfo
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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
- B01D53/81—Solid phase processes
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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
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/12—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated exclusively within the combustion zone
- F23C10/14—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated exclusively within the combustion zone the circulating movement being promoted by inducing differing degrees of fluidisation in different parts of the bed
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- 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
Abstract
The invention relates to the field of in-furnace synchronous desulfurization and denitrification during low-load operation of circulating fluidized bed boilers, in particular to a synchronous desulfurization and denitrification agent in a solid waste base furnace, and a preparation method and application thereof. After biomass, sludge in a semi-dry state and carbide slag are mixed, the mixture is extruded, cut, rounded and air-dried under the action of a binder and a fermenting agent to obtain a synchronous desulfurization and denitrification agent in the furnace, the mixed pellets have certain strength and suitable grain diameter in the furnace, the carbide slag and the water which is difficult to remove in the sludge are fully utilized for mixing and forming, and the problem that the carbide slag has too small grain diameter and is easy to escape is solved; the particles form rich pore structures inside, have two reaction paths of chemistry and adsorption, and still have good NO removal effect at a lower temperature of 500-800 ℃. The invention reduces the NO emission reduction pressure during the peak shaving of the circulating fluidized bed boiler in the normalized low-load operation while solving the pollution of various solid wastes and the waste of resources.
Description
Technical Field
The invention relates to the field of in-furnace synchronous desulfurization and denitrification during low-load operation of a circulating fluidized bed boiler, in particular to a synchronous desulfurization and denitrification agent in a solid waste base furnace, and a preparation method and application thereof.
Background
In recent years, with the rapid development of clean energy technologies such as wind power, hydropower and solar power generation and the strong support of the nation on novel clean energy, the proportion of new energy in a power grid is gradually enlarged, and the demand for peak shaving of thermal power generation is gradually increased. When the circulating fluidized bed boiler is in deep peak-shaving low-load operation, the temperature of the flue gas in the boiler is reduced to 600-800 ℃, so that the SNCR deviates from the optimal reaction temperature range of 850-1150 ℃, the denitration efficiency is reduced, the ammonia escape is increased, the subsequent SCR catalyst is poisoned, and the removal efficiency of NOx is further influenced. Therefore, the method has important significance in finding a more appropriate, economic and efficient denitration method.
The heaping of a large amount of calcium hydroxide-based carbide slag waste generated in the process of preparing acetylene by hydrolyzing calcium carbide, the heaping and local burning of a large amount of corn cobs and corn straw biomass in the agricultural production process and the heaping of a large amount of activated sludge generated in the process of treating urban domestic sewage all cause serious environmental hazards and resource waste. At present, a great deal of carbide slag is used as a sulfur fixing agent in a furnace, but the carbide slag is easy to carry and escape by flue gas due to small particle size in the using process, so that the calcium-sulfur ratio is too high, and the calcium utilization rate is too low. And in the process of sulfur fixation in the furnace, the main components of calcium hydroxide and SO in the carbide slag 2 Reaction to form compact CaSO 4 The shell wraps the surface of the carbide slag particles, so that the continuous reaction of the internal effective calcium hydroxide is hindered, the calcium utilization rate is further reduced, and the sulfur fixation rate is reduced. And the carbide slag and the activated sludge have high water content and are difficult to dehydrate, and the energy consumption cost is high when the carbide slag and the activated sludge are independently dehydrated for resource utilization. Therefore, the usage of the carbide slag as the sulfur-fixing agent in the furnace needs to be further optimized, and a way for recycling the biomass and sludge solid waste is provided.
Patent CN201710667316 discloses a carbide slag treatment process and system, wherein a drying powder is added into preliminarily dried carbide slag to further reduce the water content of the carbide slag, so that the problem of bonding and blocking of the carbide slag is solved, and a rapid water removal effect is achieved; patent CN201810461190 discloses a carbide slag composite calcium-based desulfurizer based on biomass conditioning and a preparation method thereof, wherein biomass and wet carbide slag are mixed and granulated to condition carbide slag to prepare the composite calcium-based desulfurizer, so that the desulfurization performance of the carbide slag is improved; patent CN201721222938 discloses a system for comprehensively treating garbage and carbide slag, and the technology carries out co-pyrolysis on mixed pellets formed by garbage and carbide slag, and the obtained high-temperature oil gas product is in direct contact with the carbide slag after filter pressing, so that dry carbide is realizedRemoving the residues and simultaneously removing tar, dust and CO in the pyrolysis oil gas 2 Obtaining high-quality synthesis gas; patent CN200810068715 discloses a method for preparing superfine and superfine calcium carbonate with different crystal forms from carbide slag, which utilizes calcium hydroxide component in the carbide slag to produce superfine and superfine calcium carbonate products with different crystal forms and high added value; patent CN201110164225 discloses a method for producing a desulfurizer by using carbide slag, wherein the carbide slag is subjected to impurity removal and then is dried to prepare desulfurizer dry powder. Patent CN201911115755 discloses a carbide slag modifier for desulfurization of a circulating fluidized bed boiler, modified carbide slag and a preparation method thereof, wherein the carbide slag is added with a modifier consisting of a binder, a dispersant and a cerium-containing rare earth catalyst so as to improve the boiler efficiency and reduce the abrasion of a heating surface pipe; patent CN201010243103 discloses a method and a device for preparing a dry desulfurizing agent by using carbide slag, wherein carbide slag and quicklime powder are premixed to obtain a solid mixture, and then proper adjustment of carbide slag and quicklime digestion are carried out to obtain slaked lime powder. At present, a plurality of scholars prepare the carbide slag into a dry-method or wet-method sulfur fixing agent, mainly carry out impurity removal and purification and particle size screening on the carbide slag, have complex process and higher cost, are only used as a sulfur fixing agent, and have single function.
In view of the above, there is a need to improve the utilization deficiency of the existing carbide slag and further improve the resource utilization level of the carbide slag and other various solid wastes.
Disclosure of Invention
Aiming at the problems, the invention provides a synchronous desulfurization and denitrification agent in a solid waste base furnace and a preparation method and application thereof, and the synchronous desulfurization and denitrification agent is prepared by mixing and molding carbide slag, biomass and sludge by utilizing the special properties of the carbide slag, the biomass and the sludge to prepare a product capable of being used for simultaneous desulfurization and denitrification in the furnace, so as to solve the problems in multiple aspects of desulfurization, low-load operation and denitrification, solid waste utilization and the like in the conventional furnace.
In order to achieve the purpose, the invention adopts the following technical scheme:
a synchronous desulfurization and denitrification agent in a solid waste base furnace is obtained by the method comprising the following steps:
step 1, mixing carbide slag and sludge, then mechanically dewatering to prepare a semi-dry carbide slag and sludge mixture, and crushing biomass to form biomass powder;
step 3, performing material enclosing fermentation on the mixture uniformly stirred in the step 2;
step 4, drying the mixture fermented in the step 3;
and 6, naturally drying the round spherical particles to prepare the synchronous desulfurization and denitrification agent in the furnace.
Further, the acetylene sludge in the step 1 is one or a mixture of dry acetylene sludge and mechanically dehydrated wet acetylene sludge, and the water content is controlled to be 4-10% when the acetylene sludge is used.
Further, the mass ratio of the sludge to the carbide slag in the step 1 is 1-3: 7 to 9.
Further, the water content of the semi-dry carbide slag and sludge after mechanical dehydration in the step 1 is 30-60%; the biomass powder is 1-10 mm.
Further, the mass ratio of the mixture of the semi-dry carbide slag and the sludge to the biomass in the step 2 is 7-10: 0-3%, the dosage of the binder is 5% -10% of the total mass of the mixed semi-dry carbide slag and sludge/biomass, and the dosage of the leavening agent is 0-1% of the total mass of the mixed semi-dry carbide slag and sludge/biomass.
Further, the biomass in the step 2 is K, Na one or a mixture of at least two of corn stalks, corn cobs and sorghum stalks with high alkali metal content; the binder is any one of fermented biomass, quick-drying high-alumina cement, coal pitch, petroleum pitch and residues thereof.
Further, the material blocking fermentation in the step 3 is carried out under the condition that the fermentation tank is heated by using flue gas at 100-150 ℃ in front of a flue dust collector of the circulating fluidized bed boiler, the temperature in the fermentation tank is controlled to be 20-30 ℃, and the fermentation time is 2 days.
Further, the drying mode of the mixture in the step 4 is that the flue gas waste heat at 100-150 ℃ in front of the circulating fluidized bed boiler flue dust remover is used for drying, and the water content in the dried mixture is 25-35%.
Further, in the step 5, the diameter of the extruded columnar mixture is 1.5 mm-5 mm; the specific process of cutting and rounding the columnar mixture comprises the steps of cutting the columnar mixture into sections according to the width of 5-10 mm at intervals, and then putting the sections into a rounding machine for rounding into spherical particles.
Further, in the step 6, the moisture content of the round and round molded spherical particles is controlled to be 5-10% after the spherical particles are naturally air-dried.
The invention provides an application of a synchronous desulfurization and denitrification agent in a solid waste base furnace in synchronous desulfurization and denitrification in a circulating fluidized bed boiler.
Further, when the synchronous desulfurization and denitrification agent particles in the solid waste base furnace are dried in the air and then enter the furnace for use, the boiler needs to be modified, the position of the upper secondary air is raised, so that the oxygen-poor atmosphere in the furnace is further strengthened, the oxygen concentration in the dense-phase area at the lower part of the hearth is further reduced, and the reducing capacity of coke and volatile matters on NOx is also strengthened. Then, the synchronous desulfurization and denitrification agent enters from a lower secondary air port, the oxygen concentration at the position is 1% -3%, biomass and sludge in the synchronous desulfurization and denitrification particles are pyrolyzed to generate a large amount of volatile matters and coke, and rich pore structures are formed inside the particles, SO that SO is favorably generated 2 And adsorption of NOx on the coke surface, promoting NOx reduction, and carbide slag and SO 2 Gas-solid reaction, effectively reducing SO in the furnace 2 And the concentration of NOx.
Compared with the prior art, the invention has the following advantages:
(1) the invention solves the problem of environmental pollution caused by long-term stockpiling or improper treatment of various solid wastes of carbide slag, biomass and sludge;
(2) the method utilizes the water which is difficult to remove in the carbide slag and the sludge for forming, utilizes the water in the carbide slag and the sludge to a great extent, and utilizes the residual heat of partial flue gas of a power plant to dry the carbide slag and the sludge, thereby solving the problem that the water in the sludge is still too high after mechanical dehydration, and saving a large amount of clean water resources in the mixed forming process;
(3) the synchronous desulfurization and denitrification agent is prepared into particles with the particle size of 3-5 mm, so that the problems that the particle size is too small and the particles are easy to escape during sulfur fixation in the carbide slag furnace and the utilization rate is low are solved;
(4) in the invention, because the carbide slag, the biomass and the sludge exist, a large amount of volatile components can be generated by pyrolysis under low oxygen concentration in the furnace, biomass coke or sludge coke is formed, and rich pores are formed on the synchronous desulfurization and denitrification agent, therefore, the carbide slag can be used for sulfur fixation, the volatile components and the coke can be used for reducing NOx, and the porous particles can be used for reducing SO 2 Adsorbing NOx to realize synchronous desulfurization and denitrification;
(5) the invention has higher desulfurization and denitrification capability in a low-temperature region of 500-800 ℃ at low load and a high-temperature region of 800-900 ℃ at full load, reduces the NOx control pressure during low-load operation of the circulating fluidized bed, and reduces the ammonia spraying amount of SNCR and the subsequent SCR catalyst poisoning and inactivation caused by ammonia escape.
Drawings
FIG. 1 is a schematic diagram of a preparation method and an application of a synchronous desulfurization and denitrification agent in a solid waste base furnace provided by the invention;
FIG. 2 is a particle size distribution diagram of a sulfur-fixing agent carbide slag in a circulating fluidized bed boiler of a certain thermal power plant;
FIG. 3 shows the experimental results of the simultaneous desulfurization and denitrification efficiency of the synchronous desulfurization and denitrification agent prepared by mixing carbide slag and sludge under laboratory conditions.
Detailed Description
The technical solution in the embodiments of the present invention will be specifically and specifically described below with reference to the embodiments of the present invention and the accompanying drawings. It should be noted that variations and modifications can be made by those skilled in the art without departing from the principle of the present invention, and these should also be construed as falling within the scope of the present invention.
Example 1
Referring to fig. 1, a preparation method and application of a synchronous desulfurization and denitrification agent in a solid waste base furnace comprises the following steps:
step 1, mixing the mechanically dewatered carbide slag and sludge with the water content of 5% according to the mass ratio of 7:3, then mechanically dewatering to prepare a semi-dry carbide slag and sludge mixture with the water content of 40%, and crushing biomass into biomass powder with the particle size of 2 mm;
step 3, performing closed material fermentation on the mixture uniformly stirred in the step 2, wherein the fermentation condition is that the fermentation tank is heated by using the smoke gas at 130 ℃ in front of a dust remover of a flue of a circulating fluidized bed boiler, the temperature in the fermentation tank is controlled to be 30 ℃, and the fermentation time is 2 days;
step 4, drying the mixture fermented in the step 3 by using the residual heat of the flue gas at 130 ℃ in front of a circulating fluidized bed boiler flue dust remover, wherein the water content in the dried mixture is 25%;
and 6, naturally drying the round spherical particles, and controlling the water content to be 5% after natural drying to prepare the synchronous desulfurization and denitrification agent in the furnace.
The application process comprises the steps of firstly lifting the position of secondary air on the circulating fluidized bed boiler, and sending the synchronous desulfurization and denitrification agent in the solid waste base furnace into the circulating fluidized bed boiler through a secondary air inlet at the lower part of the circulating fluidized bed boiler to carry out synchronous desulfurization and denitrification.
Example 2
Preparation of synchronous desulfurization and denitrification agent in solid waste base furnace
Mixing 10g of sludge in a semi-dry state and 90g of carbide slag in the semi-dry state, adding 5g of quick-drying high-alumina cement and 0.5g of leavening agent, and uniformly mixing the mixture in a stirring tank; and then heating the uniformly stirred mixture to 30 ℃ by using the residual heat of partial flue gas at 100-150 ℃ in front of a flue dust collector of the circulating fluidized bed boiler to perform blank fermentation for 2 days, drying the mixture by using the residual heat of the partial flue gas after fermentation, and controlling the moisture after drying to be 25-35%. And then putting the mixture into a screw extruder to extrude columnar mixture with the diameter of 1.5-5 mm, cutting the columnar mixture according to the width of 5-10 mm at intervals, and putting the segments into a spheronizer to be spheronized into spherical particles. And (4) naturally air-drying the round and molded particles, and controlling the water content to be 5% after air-drying to prepare the in-furnace synchronous desulfurization and denitrification agent.
Example 3
The invention uses the synchronous desulfurization and denitrification agent in the solid waste base furnace
When the synchronous desulfurization and denitrification agent is used in a furnace, the boiler needs to be modified, the position of the upper secondary air is raised, so that the oxygen-poor atmosphere in the furnace is further strengthened, the oxygen concentration in a dense-phase region at the lower part of a hearth is further reduced, and the reduction capacity of coke and volatile matters on NOx is also enhanced. Then, the synchronous desulfurization and denitrification agent enters from a lower secondary air port, the oxygen concentration at the position is 1% -3%, at the moment, biomass and sludge in the synchronous desulfurization and denitrification particles are pyrolyzed to generate a large amount of volatile matters and coke, and rich pore structures are formed inside the particles. And here SO 2 Has been generated, is beneficial to shortening SO 2 Response time of concentration decrease. Abundant pore structure reinforced coke surface adsorption SO 2 And NOx, promote coke to reduce NOx and carbide slag and SO 2 Gas-solid reaction of (2) to efficiently reduce SO in the furnace 2 And the concentration of NOx.
Example 4
Preparation of synchronous desulfurization and denitrification agent in solid waste base furnace
Taking 70g of a mixture of the mechanically dehydrated carbide slag and sludge in a semi-dry state and 30g of straw powder with the length of 1-10 mm, mixing, adding 10g of coal tar pitch and 1g of a leavening agent, and uniformly stirring in a stirring tank; carrying out constant-temperature blank fermentation on the uniformly stirred mixture under the residual heat of flue gas at 100-150 ℃, controlling the temperature of a fermentation tank at 20 ℃, and fermenting for 2 days; drying the fermented mixture under the residual heat of flue gas at 100-150 ℃, and controlling the dried water content to be 25-35%; putting the dried mixture into a screw extruder to extrude the mixture into strips with the diameter of 1.5-3 mm, cutting the strip-shaped mixture into small sections with the diameter of 5-10 mm, and putting the cut small sections of mixture into a rounding machine to carry out rounding granulation; and (4) naturally air-drying the round and molded particles, and air-drying the water to 9% to prepare the synchronous desulfurization and denitrification agent in the furnace. And the prepared in-furnace synchronous desulfurization and denitrification agent enters the circulating fluidized bed boiler from the lower secondary air port of the circulating fluidized bed boiler to perform synchronous desulfurization and denitrification.
Example 5
The particle size of the sulfur-fixing agent carbide slag in the circulating fluidized bed boiler of a certain thermal power plant is analyzed in a laboratory, and the result is shown in fig. 2. Analysis shows that the particle size of the carbide slag has a median diameter D 50 43 μm, and D 90 The grain size is 104 mu m, is too small, is obviously smaller than the optimal grain size of the furnace entering into the furnace of 3 mm-5 mm, and causes the calcium utilization rate to be too low because the calcium easily escapes in the process of sulfur fixation in the furnace.
Example 6
Experiment of simultaneous desulfurization and denitrification efficiency of synchronous desulfurization and denitrification agent prepared by mixing carbide slag and sludge under laboratory conditions
Step 1, taking 20g of sludge and 80g of carbide slag in a dry basis state;
step 3, fermenting and drying the uniformly stirred mixture obtained in the step 2 in a 105 ℃ oven until the water content is 23%;
step 4, putting the dried mixture into a screw extruder to extrude the dried mixture into strips with the diameter of 1.5-3 mm, cutting the strip-shaped mixture into small sections with the diameter of 5-10 mm, and putting the cut small sections of mixture into a rounding machine to carry out rounding granulation;
and 5, naturally air-drying the round and molded particles until the water content is 10%, and preparing the in-furnace synchronous desulfurization and denitrification agent.
3g of the prepared synchronous desulfurization and denitrification agent is placed in a 700 ℃ horizontal tubular furnace, simulated flue gas is introduced, and SO in the flue gas 2 NO and O 2 The volume fractions of (A) are respectively: 0.3%, 0.07% and 1%, N 2 In order to balance gas, the flue gas analyzer is used for measuring the flue gas at the outlet of the tubular furnace in real time to obtain the synchronous desulfurization and denitrification agent capable of mixing SO 2 The concentration of NO and the concentration of NO are both reduced by 50-60%, and the duration of desulfurization and denitrification is 1-2 h.
Claims (8)
1. The application of the synchronous desulfurization and denitrification agent in the solid waste base furnace is characterized in that: the method is used for synchronous desulfurization and denitrification in the circulating fluidized bed boiler;
the application process comprises the steps of firstly lifting the position of secondary air on the circulating fluidized bed boiler, and sending the synchronous desulfurization and denitrification agent in the solid waste base furnace into the circulating fluidized bed boiler from the lower secondary air port of the circulating fluidized bed boiler to perform synchronous desulfurization and denitrification;
the synchronous desulfurization and denitrification agent in the solid waste base furnace is obtained by the method comprising the following steps:
step 1, mixing carbide slag and sludge, then mechanically dehydrating to prepare a semi-dry carbide slag and sludge mixture, and crushing biomass to form biomass powder;
step 2, mixing the biomass powder and the mixture obtained in the step 1 again, adding a binder and a leavening agent, and uniformly stirring the mixture in a stirring tank to obtain a mixture;
step 3, performing material-enclosing fermentation on the uniformly stirred mixture in the step 2;
step 4, drying the mixture fermented in the step 3;
step 5, placing the dried mixture into a screw extruder to extrude the mixture into a column shape, and cutting and rounding the column-shaped mixture to obtain spherical particles;
step 6, naturally drying the spherical particles subjected to the rounding forming to prepare the synchronous desulfurization and denitrification agent in the furnace;
in the step 5, the diameter of the extruded columnar mixture is 1.5 mm-5 mm; the specific process of cutting and rounding the columnar mixture is to cut the columnar mixture into sections according to the width of 5-10 mm at intervals, and then, putting the sections into a rounding machine to be rounded into spherical particles.
2. The application of the synchronous desulfurization and denitrification agent in the solid waste base furnace according to claim 1 is characterized in that: the acetylene sludge in the step 1 is one or a mixture of dry acetylene sludge and mechanically dehydrated wet acetylene sludge, and the moisture is controlled to be 4-10% when the acetylene sludge is used.
3. The application of the synchronous desulfurization and denitrification agent in the solid waste base furnace according to claim 1 is characterized in that: the mass ratio of the sludge to the carbide slag in the step 1 is 1-3: 7-9; the water content of the mixture of the semi-dry carbide slag and the sludge after mechanical dehydration is 30-60%; the biomass powder is 1-10 mm.
4. The application of the synchronous desulfurization and denitrification agent in the solid waste base furnace according to claim 1 is characterized in that: the mass ratio of the mixture of the semi-dry carbide slag and the sludge to the biomass in the step 2 is 7-10: 0-3%, the dosage of the binder is 5% -10% of the total mass of the mixed semi-dry carbide slag and sludge/biomass, and the dosage of the leavening agent is 0-1% of the total mass of the mixed semi-dry carbide slag and sludge/biomass.
5. The application of the synchronous desulfurization and denitrification agent in the solid waste base furnace according to claim 1 is characterized in that: the biomass in the step 2 is K, Na one or the mixture of at least two of corn straw, corncob and sorghum straw with higher alkali metal content; the binder is any one of fermented biomass, quick-drying high-alumina cement, coal pitch, petroleum pitch and residues thereof.
6. The application of the synchronous desulfurization and denitrification agent in the solid waste base furnace according to claim 1 is characterized in that: and 3, heating the fermentation tank by using flue gas at the temperature of 100-150 ℃ in front of a flue dust collector of the circulating fluidized bed boiler, controlling the temperature in the fermentation tank to be 20-30 ℃, and fermenting for 2 days.
7. The application of the synchronous desulfurization and denitrification agent in the solid waste base furnace according to claim 1 is characterized in that: and 4, drying the mixture in the step 4 by using the flue gas waste heat at the temperature of 100-150 ℃ in front of a circulating fluidized bed boiler flue dust remover, wherein the water content in the dried mixture is 25-35%.
8. The application of the synchronous desulfurization and denitrification agent in the solid waste base furnace according to claim 1 is characterized in that: the water content of the spherical particles is controlled to be 5-10% after the spherical particles are naturally air-dried.
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