CN210286777U - High-efficient system that utilizes of desulfurization accessory substance - Google Patents
High-efficient system that utilizes of desulfurization accessory substance Download PDFInfo
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- CN210286777U CN210286777U CN201920822887.0U CN201920822887U CN210286777U CN 210286777 U CN210286777 U CN 210286777U CN 201920822887 U CN201920822887 U CN 201920822887U CN 210286777 U CN210286777 U CN 210286777U
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Abstract
The utility model discloses a system is utilized to desulfurization accessory substance high efficiency, including desulfurization dust collector, the waste ash holding vessel, gypsum preparation jar and gypsum finished product storage device, the flue gas gets into desulfurization dust collector through the flue, tail gas that desulfurization dust collector produced is finally discharged by the chimney through two suction of fan, the waste ash that desulfurization dust collector produced passes through the pipe-line and carries to the waste ash holding vessel, the waste ash holding vessel passes through the pipeline and communicates with gypsum preparation tank deck portion, it has air conveying pipeline to communicate at gypsum preparation tank bottom, the flue is through bypass flue and air conveying pipeline intercommunication, gypsum preparation jar is inside to be provided with agitating unit, the top of gypsum preparation jar is provided with gas outlet and filler pipe, gypsum preparation jar passes through row material pipe and gypsum finished product storage device intercommunication, be provided with thick liquid delivery pump and dewatering device on row material pipe; the utility model discloses the realization is to the high-efficient utilization of desulfurization accessory substance, effectively solves the problem that the desulfurization accessory substance treatment degree of difficulty is big, improves economic benefits simultaneously, and is energy-concerving and environment-protective.
Description
Technical Field
The utility model relates to a high-efficient system that utilizes of desulfurization accessory substance belongs to flue gas dry process/semidry process desulfurization accessory substance processing technology field.
Background
Since the 90 s of the 20 th century, the industry has been rapidly developed, the consumption of coal has been increased year by year, sulfur dioxide is used as a main pollutant generated by coal combustion, and the total emission amount is quite large; the large-area acid rain appears in the environment due to the large emission of sulfur dioxide, and the acid rain tends to increase continuously, so that the yield of grains, vegetables and fruits is reduced greatly, and even the whole farmland is not harvested; the forest trees are damaged, the volume of the wood is reduced sharply, and even a large number of forest trees die; acid rain can also cause metal and building materials to be corroded, and soil and water bodies are acidified; sulfur dioxide in the air can also cause respiratory diseases of human bodies, so that the death rate of human beings is increased year by year; sulfur dioxide becomes an important factor restricting economic and social development; the ecological environment protection work is highly valued by the society at present, and the existing main desulfurization technology comprises dry desulfurization, wet desulfurization and semidry desulfurization, wherein the wet desulfurization process is mostly used for coal-fired power plants at present, but the system is complex, the operation cost is high, and the desulfurization wastewater treatment difficulty is large; the dry-process and semi-dry-process desulfurization processes have the advantages of higher desulfurization efficiency, less construction investment, small occupied area and good development prospect, are suitable for desulfurization transformation of medium and small units and old units, but desulfurization byproducts generated by the dry-process or semi-dry-process desulfurization processes are unstable and have higher treatment difficulty, the desulfurization byproducts are desulfurization waste ash, are generally treated uniformly according to solid wastes, consume considerable human and financial resources, and are not widely applied to the dry-process and semi-dry-process desulfurization processes.
Disclosure of Invention
For solving prior art's not enough, the utility model provides a system is utilized to desulfurization accessory substance high efficiency, the utility model discloses a main objective carries out high-efficient the utilization with the waste ash accessory substance that current dry process/semi-dry process desulfurizing tower and dust remover were collected, a series of processes of desulfurization accessory substance preparation gypsum have been increased after the waste ash is collected, the realization is handled dry process/semi-dry process desulfurization accessory substance, generate the gypsum product that can recycle, the gypsum product purity of making is good, the quality is high, be convenient for sell, really realize the high-efficient utilization to the desulfurization accessory substance, the system component is simple, the process technology reliability is high, investment cost and running cost are low, can effectively solve the big problem of the desulfurization accessory substance processing degree of difficulty, simultaneously, and is energy-saving and environment-friendly, and is suitable for popularization and application.
The utility model discloses the technical scheme who adopts does:
the utility model provides a high-efficient system that utilizes of desulfurization accessory substance, includes desulfurization dust collector, waste ash holding vessel, gypsum preparation jar and gypsum finished product storage device, and the flue gas gets into desulfurization dust collector through the flue header, the tail gas that desulfurization dust collector produced is finally discharged by the chimney through two suction of fan, the waste ash that desulfurization dust collector produced passes through the pipe-line and carries to waste ash holding vessel, waste ash holding vessel passes through pipeline and gypsum preparation tank deck portion intercommunication, and it has air conveying pipeline to prepare tank bottoms portion intercommunication at the gypsum, the flue header passes through bypass flue and air conveying pipeline intercommunication, the inside agitating unit that is provided with of gypsum preparation jar, the top of gypsum preparation jar is provided with gas outlet and filler pipe, gypsum preparation jar is through arranging material pipe and gypsum finished product storage device intercommunication, is provided with thick liquid delivery pump and dewatering device on arranging the material pipe.
As a further preference of the utility model, the desulfurization dust collector be dry desulfurization dust collector, dry desulfurization dust collector includes lime storehouse, jetting system, dry desulfurization tower and ceramic filter tube dust remover, flue gas gets into the dry desulfurization tower through the flue stack, and lime in the lime storehouse insufflates the dry desulfurization tower through the jetting system, and the dry desulfurization tower adopts the mode of going in and out under the flue gas, and the inside centre of dry desulfurization tower is the venturi form, utilizes the change of flue gas velocity of flow to make lime and flue gas more abundant mix the contact reaction; the flue gas desulfurized by the dry desulfurization tower enters a ceramic filter tube dust remover for dust removal and filtration, tail gas generated by the ceramic filter tube dust remover is sucked by a second fan and is finally discharged by a chimney, and waste ash generated by the ceramic filter tube dust remover and the dry desulfurization tower is conveyed to a waste ash storage tank through a pipeline; the waste ash storage tank is also communicated with the lime bin through a waste ash circulating pipeline, and an ash conveying device is arranged on the waste ash circulating pipeline.
As a further optimization of the utility model, the desulfurization dust collector is a semi-dry desulfurization dust collector, the semi-dry desulfurization dust collector comprises a pulping system, a rotary atomizer, a semi-dry desulfurization tower and a bag-type dust collector, the flue gas enters the semi-dry desulfurization tower through a main flue, the rotary atomizer is installed at the top of the semi-dry desulfurization tower, and lime desulfurizer slurry prepared by the pulping system is centrifugally atomized and sprayed into the semi-dry desulfurization tower through the rotary atomizer to fully contact with the flue gas and react with the flue gas; the flue gas desulfurized by the semidry desulfurization tower enters a bag-type dust remover for dust removal and filtration, tail gas generated by the bag-type dust remover is sucked by a second fan and is finally discharged by a chimney, and waste ash generated by the bag-type dust remover and the semidry desulfurization tower is conveyed to a waste ash storage tank through a pipeline; the waste ash storage tank is also communicated with the pulping system through a waste ash circulating pipeline, and an ash conveying device is arranged on the waste ash circulating pipeline.
As the further optimization of the utility model, a flashboard is arranged on the pipeline which is communicated with the waste ash storage tank and the gypsum preparation tank; the gate is used for controlling the addition of waste ash added into the gypsum preparation tank, and the ash can be discharged after the calcium sulfite in the gypsum preparation tank is completely oxidized and conveyed by the slurry conveying pump, so that the problem that the oxidized calcium sulfate and the waste ash are not clearly separated is avoided, and the purity of the prepared gypsum finished product is improved.
As the utility model discloses a further preferred, the bypass flue on be provided with fan one, the velocity of flow of flue gas in the bypass flue can be adjusted to fan one.
As the further optimization of the utility model, the inner bottom of the gypsum preparation tank is provided with an aeration device, and the air conveying pipeline is communicated with the aeration device arranged at the inner bottom of the gypsum preparation tank; the aeration equipment can realize compact and uniform aeration work.
As a further preference of the utility model, the water produced by the dehydration device is communicated with the water feeding pipe through a pipeline; realize the reuse of water resource, avoid discharging and cause the pollution.
As a further preference of the utility model, the stirring shaft and the stirring blade of the stirring device positioned in the gypsum preparation tank are made of acid and alkali corrosion resistant materials, and the surfaces of the stirring shaft and the stirring blade made of the acid and alkali corrosion resistant materials are coated with glass ceramic coatings; effectively prolong the service life of the stirring device.
A method for efficiently utilizing desulfurization byproducts comprises the following steps:
(1) firstly, flue gas enters a desulfurization and dust removal device through a main flue, the desulfurization and dust removal device carries out desulfurization and dust removal treatment on the flue gas, tail gas generated by the desulfurization and dust removal device is sucked by a second fan and finally discharged by a chimney, and waste ash generated by the desulfurization and dust removal device is conveyed to a waste ash storage tank through a pipeline;
(2) then quantitatively feeding the waste ash in the waste ash storage tank into a gypsum preparation tank, adding water into the gypsum preparation tank, simultaneously leading out part of flue gas in a main flue and mixing the flue gas with air, and inputting the mixed gas of the flue gas and the air into the gypsum preparation tank to maintain the pH value in the gypsum preparation tank within the range of 4-6 and the oxygen content above 18%; stirring the waste ash and the water by a stirring device in the gypsum preparation tank to prepare gypsum slurry;
(3) conveying the gypsum slurry in the gypsum preparation tank to a dehydration device through a slurry conveying pump for dehydration and drying treatment;
(4) and conveying the gypsum finished product dehydrated and dried by the dehydration device to a gypsum finished product storage device for storage.
Wherein, the water generated by the dehydration device in the step (3) is input into the gypsum preparation tank again through a pipeline.
The beneficial effects of the utility model reside in that:
(1) the utility model can really realize the high economic benefit utilization of the dry method/semi-dry method desulfurization by-products, and the desulfurization waste ash collected by the dust remover is used as the circulating ash on one hand and is used for preparing the gypsum on the other hand, thereby realizing the high-efficiency utilization of the desulfurization by-products;
(2) the acid environment required by the gypsum preparation in the utility model is not required to be obtained by an external acid liquor adding mode, and can be obtained by directly utilizing the acid flue gas of the bypass flue; meanwhile, the flue gas mixed air enters the gypsum preparation tank, so that the hot flue gas cooling work is well realized, and the evaporation effect of the superheated flue gas on the slurry in the gypsum preparation tank is avoided;
(3) the flue gas introduced into the gypsum preparation tank of the utility model contains sulfur dioxide, and can be subjected to acid-base neutralization reaction with calcium hydroxide which is not completely reacted in the desulfurized waste ash and emit heat, so that the oxidation rate of calcium sulfite is accelerated, and the acquisition efficiency of gypsum is improved;
(4) the water removed from the prepared gypsum slurry after passing through the dehydration device in the utility model is continuously recycled into the gypsum preparation tank, thereby avoiding the waste water discharge in the process of utilizing desulfurization byproducts and reducing the water consumption of the process;
(5) the utility model discloses set up the flashboard on the intercommunication pipeline between waste ash holding vessel and the gypsum preparation jar, the flashboard is used for controlling the addition of adding waste ash to the gypsum preparation jar, can wait to carry out the ash again after calcium sulfite totally oxidizes in the gypsum preparation jar and conveys through the thick liquid conveying pump and accomplish, has avoided the problem that calcium sulfate after the oxidation is unclear with the waste ash separation, has improved the off-the-shelf purity of preparation gypsum;
the utility model discloses a main objective is that the waste ash accessory substance that collects current dry process/semi-dry process desulfurizing tower and dust remover carries out high-efficient utilization, a series of processes of desulfurization accessory substance preparation gypsum have been increased after waste ash is collected, the realization is handled dry process/semi-dry process desulfurization accessory substance, generate the gypsum product that can recycle, the gypsum product purity of making is good, the quality is high, be convenient for sell, really realize the high-efficient utilization to the desulfurization accessory substance, the system composition is simple, the process technology reliability is high, investment cost and running cost are low, can effectively solve the big problem of the desulfurization accessory substance processing degree of difficulty, simultaneously, economic benefits is improved, energy saving and environmental protection, and the dust remover is suitable for popularization and application.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a second embodiment of the present invention;
the main reference numerals in the figures have the following meanings:
the system comprises a lime bin 1a, a blowing system 2a, a dry desulfurization tower 3a, a ceramic filter tube dust remover 4a, a pulping system 1b, a rotary atomizer 2b, a semi-dry desulfurization tower 3b, a cloth bag dust remover 4b, a waste ash storage tank 5, a gate plate 6, a gypsum preparation tank 7, a stirring device 71, an air outlet 72, a water feeding pipe 73, a slurry conveying pump 8, a dehydration device 9, a gypsum finished product storage device 10, an ash conveying device 11, a fan I12, a fan II 13, a fan II 14, a chimney 15, a bypass flue 16, a main flue 17, a waste ash circulating pipeline 18, an air conveying pipeline 18 and a material discharging pipe 19.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1: the embodiment is a system for efficiently utilizing desulfurization byproducts, which comprises a desulfurization and dust removal device, a waste ash storage tank 5, a gypsum preparation tank 7 and a gypsum finished product storage device 10, wherein flue gas enters the desulfurization and dust removal device through a main flue 16, tail gas generated by the desulfurization and dust removal device is sucked by a second fan 13 and finally discharged by a chimney 14, waste ash generated by the desulfurization and dust removal device is conveyed to the waste ash storage tank 5 through a pipeline, the waste ash storage tank 5 is communicated with the top of the gypsum preparation tank 7 through a pipeline, the bottom of the gypsum preparation tank 7 is communicated with an air conveying pipeline 18, the main flue 16 is communicated with the air conveying pipeline 18 through a bypass flue 15, a stirring device 71 is arranged inside the gypsum preparation tank 7, the rotating speed of the stirring device 71 is adjustable, the top of the gypsum preparation tank 7 is provided with an air outlet 72 and a water feeding pipe 73, the gypsum preparation tank 7 is communicated with the gypsum, the discharge pipe 19 is provided with a slurry feed pump 8 and a dewatering device 9.
The desulfurization and dust removal device in the embodiment is a dry desulfurization and dust removal device, the dry desulfurization and dust removal device comprises a lime bin 1a, a blowing system 2a, a dry desulfurization tower 3a and a ceramic filter tube dust remover 4a, flue gas enters the dry desulfurization tower 3a through a main flue 16, lime in the lime bin 1a is blown into the dry desulfurization tower 3a through the blowing system 2a, the dry desulfurization tower 3a adopts a mode that the flue gas enters from bottom to top, the middle inside the dry desulfurization tower 3a is in a venturi shape, and the lime and the flue gas are more fully mixed and contact reacted by using the change of the flow velocity of the flue gas; the flue gas desulfurized by the dry desulfurization tower 3a enters the ceramic filter tube dust remover 4a for dust removal and filtration, the tail gas generated by the ceramic filter tube dust remover 4a is sucked by the second fan 13 and finally discharged by the chimney 14, and the waste ash generated by the ceramic filter tube dust remover 4a and the dry desulfurization tower 3a is conveyed to the waste ash storage tank 5 through a pipeline; the waste ash storage tank 5 is also communicated with the lime bin 1a through a waste ash circulating pipeline 17, and an ash conveying device 11 is arranged on the waste ash circulating pipeline 17; and part of the waste ash is conveyed to a lime bin 1a, so that the cyclic utilization of the desulfurized waste ash is realized.
In the embodiment, a pipeline for communicating the waste ash storage tank 5 with the gypsum preparation tank 7 is provided with a gate plate 6; the gate 6 is used for controlling the addition of waste ash added into the gypsum preparation tank 7, and the calcium sulfite in the gypsum preparation tank 7 can be completely oxidized and discharged after being conveyed by the slurry conveying pump 8, so that the problem that oxidized calcium sulfate is not clearly separated from the waste ash is solved, and the purity of the prepared gypsum finished product is improved.
In the embodiment, the first fan 12 is arranged on the bypass flue 15, and the first fan 12 can adjust the flow velocity of the flue gas in the bypass flue 15.
In the embodiment, the aeration equipment is arranged at the inner bottom of the gypsum preparation tank 7, and the air conveying pipeline 18 is communicated with the aeration equipment arranged at the inner bottom of the gypsum preparation tank 7; the aeration equipment can realize compact and uniform aeration work.
In this embodiment, the water generated by the dehydration device 9 is communicated with the water feed pipe 73 through a pipe; the water produced by the dehydration device 9 enters the gypsum preparation tank 7 together with newly injected water in a backflow mode, so that the water produced by the dehydration device 9 is prevented from being discharged outside, meanwhile, the water consumed by byproduct utilization is saved, the economic benefit is increased, the reuse of water resources is realized, and the pollution caused by emission is avoided.
In this embodiment, in order to avoid the stirring device 71 from being corroded seriously, the stirring shaft and the stirring blades of the stirring device 71, which are positioned inside the gypsum preparation tank 7, are made of acid and alkali corrosion resistant materials, and glass ceramic coatings are coated on the surfaces of the stirring shaft and the stirring blades made of the acid and alkali corrosion resistant materials; effectively prolonging the service life of the stirring device 71.
Example two
As shown in fig. 2: the structure of the embodiment is similar to that of the embodiment, and the difference is only that the desulfurization and dust removal device in the embodiment is a semi-dry desulfurization and dust removal device, the semi-dry desulfurization and dust removal device comprises a pulping system 1b, a rotary atomizer 2b, a semi-dry desulfurization tower 3b and a bag-type dust collector 4b, flue gas enters the semi-dry desulfurization tower 3b through a main flue 16, the rotary atomizer 2b is installed at the top of the semi-dry desulfurization tower 3b, and lime desulfurizer slurry prepared by the pulping system 1b is centrifugally atomized and sprayed into the semi-dry desulfurization tower 3b through the rotary atomizer 2b to be fully contacted with the flue gas and react; the flue gas desulfurized by the semi-dry desulfurization tower 3b enters a bag-type dust remover 4b for dust removal and filtration, tail gas generated by the bag-type dust remover 4b is sucked by a second fan 13 and is finally discharged by a chimney 14, and waste ash generated by the bag-type dust remover 4b and the semi-dry desulfurization tower 3b is conveyed to a waste ash storage tank 5 through a pipeline; the waste ash storage tank 5 is also communicated with the pulping system 1b through a waste ash circulating pipeline 17, and an ash conveying device 11 is arranged on the waste ash circulating pipeline 17; because the ratio of calcium to sulfur for desulfurization is often large, the by-product after reaction also contains part of Ca (OH)2Therefore, part of the by-products are conveyed to the pulping system 1b through the ash conveying device 11 for recycling, part of the waste ash is conveyed to the pulping system 1b, the pulping system 1b mixes and uniformly stirs water and the waste ash to prepare lime desulfurizer slurry, and the recycling of the desulfurized waste ash is realized.
A method for efficiently utilizing desulfurization byproducts comprises the following steps:
(1) firstly, flue gas enters a desulfurization and dust removal device through a main flue 16, the desulfurization and dust removal device carries out desulfurization and dust removal treatment on the flue gas, tail gas generated by the desulfurization and dust removal device is sucked by a second fan 13 and finally discharged from a chimney 14, and waste ash generated by the desulfurization and dust removal device is conveyed to a waste ash storage tank 5 through a pipeline;
(2) then quantitatively feeding the waste ash in the waste ash storage tank 5 into a gypsum preparation tank 7, adding water into the gypsum preparation tank 7, and simultaneously adding main smokeLeading out part of the flue gas in the flue 16, mixing the flue gas with air, inputting the mixed gas of the flue gas and the air into a gypsum preparation tank 7, and keeping the pH value in the gypsum preparation tank 7 within the range of 4-6 and the oxygen content above 18%; stirring the waste ash and water by a stirring device 71 in the gypsum preparation tank 7 to prepare gypsum slurry; the CaSO is accelerated under the acidic and aerated oxygen-enriched environment in the gypsum preparation tank 7 and under the action of adding water and stirring3Oxidation reaction to produce gypsum (CaSO)4）；
(3) Conveying the gypsum slurry in the gypsum preparation tank 7 to a dehydration device 9 by a slurry conveying pump 8 for dehydration and drying treatment;
(4) the gypsum finished product dehydrated and dried by the dehydration device 9 is conveyed to a gypsum finished product storage device 10 for storage.
Wherein, the water generated by the dehydration device 9 in the step (3) is input into the gypsum preparation tank 7 again through a pipeline.
For the dry desulfurization process, the flue gas uniformly enters a dry desulfurization tower through a gas distributor, and a desulfurizing agent Ca (OH)2After being blown into a dry-method desulfurizing tower by compressed air or a Roots blower, the SO in the flue gas is mixed with the compressed air2The reaction generates a byproduct CaSO3With CaSO4Excess Ca (OH) due to the setting of the calcium-sulfur ratio2With desulfurization by-product CaSO3And CaSO4Is intercepted by a ceramic filter tube dust remover; for the semi-dry desulfurization process, the flue gas uniformly enters a semi-dry desulfurization tower through a gas distributor, the lime slurry of the desulfurizing agent is centrifuged at high speed through a rotary atomizer to form fine fog drops, and the desulfurizing agent is Ca (OH)2Lime slurry in semi-dry desulfurizing tower and SO in flue gas2The pollutant reacts to generate a byproduct CaSO3With CaSO4Because of the high temperature environment in the tower, the water in the desulphurization by-product is quickly evaporated, namely the desulphurization by-product is evaporated into dry powdery particles by high temperature flue gas, and excessive Ca (OH)2With desulfurization by-product CaSO3And CaSO4Is intercepted by a bag-type dust collector; the desulfurization by-products intercepted by the dust remover in the dry method/semi-dry method desulfurization process are conveyed into a gypsum preparation tank, and a small amount of sulfur-containing flue gas is shunted with Ca (OH) in the gypsum preparation tank2The reaction is carried out while the acid environment in the gypsum preparation tank is ensured, and CaSO is caused by stirring and excess air blowing3Fully oxidizing to obtain high-purity gypsum CaSO4The desulfurization by-products can be optimally utilized, the output of solid pollutants is reduced, and the economic benefit is improved.
The beneficial effects of the utility model reside in that:
(1) the utility model can really realize the high economic benefit utilization of the dry method/semi-dry method desulfurization by-products, and the desulfurization waste ash collected by the dust remover is used as the circulating ash on one hand and is used for preparing the gypsum on the other hand, thereby realizing the high-efficiency utilization of the desulfurization by-products;
(2) the acid environment required by the gypsum preparation in the utility model is not required to be obtained by an external acid liquor adding mode, and can be obtained by directly utilizing the acid flue gas of the bypass flue; meanwhile, the flue gas mixed air enters the gypsum preparation tank, so that the hot flue gas cooling work is well realized, and the evaporation effect of the superheated flue gas on the slurry in the gypsum preparation tank is avoided;
(3) the flue gas introduced into the gypsum preparation tank of the utility model contains sulfur dioxide, and can be subjected to acid-base neutralization reaction with calcium hydroxide which is not completely reacted in the desulfurized waste ash and emit heat, so that the oxidation rate of calcium sulfite is accelerated, and the acquisition efficiency of gypsum is improved;
(4) the water removed from the prepared gypsum slurry after passing through the dehydration device in the utility model is continuously recycled into the gypsum preparation tank, thereby avoiding the waste water discharge in the process of utilizing desulfurization byproducts and reducing the water consumption of the process;
(5) the utility model discloses set up the flashboard on the intercommunication pipeline between well waste ash holding vessel and the gypsum preparation jar, the flashboard is arranged in controlling the addition of adding waste ash in to the gypsum preparation jar, can treat that calcium sulfite is totally oxidized in the gypsum preparation jar and carries out the ash down after the conveying of slurry conveying pump is accomplished, has avoided the problem that calcium sulfate after the oxidation and waste ash separate the unclear, has improved the off-the-shelf purity of preparation gypsum.
At present, the mainstream process of flue gas treatment is also denitration, desulfurization and dust removal; the utility model discloses a main objective is that the waste ash accessory substance that collects current dry process/semi-dry process desulfurizing tower and dust remover carries out high-efficient utilization, a series of processes of desulfurization accessory substance preparation gypsum have been increased after waste ash is collected, the realization is handled dry process/semi-dry process desulfurization accessory substance, generate the gypsum product that can recycle, the gypsum product purity of making is good, the quality is high, be convenient for sell, really realize the high-efficient utilization to the desulfurization accessory substance, the system composition is simple, the process technology reliability is high, investment cost and running cost are low, can effectively solve the big problem of the desulfurization accessory substance processing degree of difficulty, simultaneously, economic benefits is improved, energy saving and environmental protection, and the dust remover is suitable for popularization and application.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A desulfurization by-product high-efficiency utilization system is characterized in that: including desulfurization dust collector, waste ash holding vessel, gypsum preparation jar and gypsum finished product storage device, the flue gas gets into desulfurization dust collector through the flue main, the tail gas that desulfurization dust collector produced is finally discharged by the chimney through two suction of fan, the waste ash that desulfurization dust collector produced passes through the pipe-line transportation to the waste ash holding vessel, the waste ash holding vessel passes through pipeline and gypsum preparation tank deck portion intercommunication, has air conveying pipeline at gypsum preparation tank bottoms portion intercommunication, the flue main passes through bypass flue and air conveying pipeline intercommunication, the inside agitating unit that is provided with of gypsum preparation jar, the top of gypsum preparation jar is provided with gas outlet and filler pipe, the gypsum preparation jar is through arranging material pipe and gypsum finished product storage device intercommunication, is provided with thick liquid delivery pump and dewatering device on row's material pipe.
2. The system for efficiently utilizing the desulfurization byproducts as claimed in claim 1, wherein the desulfurization and dust removal device is a dry desulfurization and dust removal device, the dry desulfurization and dust removal device comprises a lime bin, a blowing system, a dry desulfurization tower and a ceramic filter tube dust remover, the flue gas enters the dry desulfurization tower through a main flue, lime in the lime bin is blown into the dry desulfurization tower through the blowing system, the dry desulfurization tower adopts a mode that the flue gas enters from bottom to top, the middle inside of the dry desulfurization tower is venturi-shaped, and the lime and the flue gas are more fully mixed and contact reacted by utilizing the change of the flow velocity of the flue gas; the flue gas desulfurized by the dry desulfurization tower enters a ceramic filter tube dust remover for dust removal and filtration, tail gas generated by the ceramic filter tube dust remover is sucked by a second fan and is finally discharged by a chimney, and waste ash generated by the ceramic filter tube dust remover and the dry desulfurization tower is conveyed to a waste ash storage tank through a pipeline; the waste ash storage tank is also communicated with the lime bin through a waste ash circulating pipeline, and an ash conveying device is arranged on the waste ash circulating pipeline.
3. The system for efficiently utilizing the desulfurization byproducts as recited in claim 1, wherein the desulfurization and dust removal device is a semidry desulfurization and dust removal device, the semidry desulfurization and dust removal device comprises a pulping system, a rotary atomizer, a semidry desulfurization tower and a bag-type dust remover, the flue gas enters the semidry desulfurization tower through a main flue, the rotary atomizer is mounted at the top of the semidry desulfurization tower, and lime desulfurizer slurry prepared by the pulping system is centrifugally atomized and sprayed into the semidry desulfurization tower through the rotary atomizer to fully contact with the flue gas and react with the flue gas; the flue gas desulfurized by the semidry desulfurization tower enters a bag-type dust remover for dust removal and filtration, tail gas generated by the bag-type dust remover is sucked by a second fan and is finally discharged by a chimney, and waste ash generated by the bag-type dust remover and the semidry desulfurization tower is conveyed to a waste ash storage tank through a pipeline; the waste ash storage tank is also communicated with the pulping system through a waste ash circulating pipeline, and an ash conveying device is arranged on the waste ash circulating pipeline.
4. The system for efficiently utilizing desulfurization byproducts of claim 1, wherein a gate is arranged on a pipeline connecting the waste ash storage tank and the gypsum preparation tank.
5. The system for efficiently utilizing the desulfurization byproducts as recited in claim 1, wherein a first fan is arranged on the bypass flue.
6. The system for efficiently utilizing desulfurization byproducts of claim 1, wherein an aeration device is arranged at the inner bottom of the gypsum preparation tank, and the air delivery pipe is communicated with the aeration device arranged at the inner bottom of the gypsum preparation tank.
7. The system for efficiently utilizing desulfurization byproducts of claim 1, wherein the water produced by the dehydration device is communicated with the water feeding pipe through a pipeline.
8. The system of claim 1, wherein the stirring shaft and the stirring blades of the stirring device inside the gypsum preparation tank are made of acid and alkali corrosion resistant materials, and the surfaces of the stirring shaft and the stirring blades made of the acid and alkali corrosion resistant materials are coated with glass ceramic coatings.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920822887.0U CN210286777U (en) | 2019-06-03 | 2019-06-03 | High-efficient system that utilizes of desulfurization accessory substance |
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| CN201920822887.0U CN210286777U (en) | 2019-06-03 | 2019-06-03 | High-efficient system that utilizes of desulfurization accessory substance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110104670A (en) * | 2019-06-03 | 2019-08-09 | 中建材环保研究院（江苏）有限公司 | A kind of desulfurizing byproduct effective utilization system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110104670A (en) * | 2019-06-03 | 2019-08-09 | 中建材环保研究院（江苏）有限公司 | A kind of desulfurizing byproduct effective utilization system and method |
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