CN205019964U - SOx/NOx control device system is united to flue gas low temperature - Google Patents
SOx/NOx control device system is united to flue gas low temperature Download PDFInfo
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- CN205019964U CN205019964U CN201520753291.1U CN201520753291U CN205019964U CN 205019964 U CN205019964 U CN 205019964U CN 201520753291 U CN201520753291 U CN 201520753291U CN 205019964 U CN205019964 U CN 205019964U
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Abstract
The utility model discloses a SOx/NOx control device system is united to flue gas low temperature, including desulfurization regeneration system and deNOx systems, desulfurization regeneration system includes the quenching and tempering tower, be no less than desulfurizing tower that 2 inside was provided with low temperature desulphurization catalyst bed, correspond being used for regeneration liquid bath, the regeneration liquid delivery pump of the different sulphuric acid concentration washing liquids of splendid attire and sweeping the air transportation pump of setting up with the desulfurizing tower, deNOx systems include dehumidification tower, the heating desulphurized flue gas of moisture among the desorption desulphurized flue gas the heater, utilize the air dilute the ammonia the ammonia diluter, mix desulphurized flue gas and the mixing column and the inside denitrating tower that is provided with low temperature denitration catalyst bed that dilute the ammonia. Adopting this practicality to provide the device system and carrying out SOx/NOx control, the flue gas application scope who has overcome the existence of present flue gas SOx/NOx control technique is narrow, and the heating energy consumption is high, the high scheduling problem of running cost.
Description
Technical field
The utility model belongs to flue gases purification field, is specifically related to the combined desulfurization and denitration apparatus system removing sulfur dioxide in flue gas and nitrogen oxide, for the purified treatment of industrial smoke.
Background technology
Sulfur dioxide and nitrogen oxide are the major pollutants of air, are also the Focal point and difficult points of air contaminant treatment and environmental protection.In recent years, in order to control sulfur dioxide and discharged nitrous oxides, a lot of country of the world has all put into effect a large amount of laws and regulations and has been controlled its discharge, and increasingly strict to the control of sulfur dioxide and discharged nitrous oxides.
Pollutant sulfur dioxide in air and nitrogen oxide are mainly derived from the flue gas after petrochemical industry substance combustion.Up to the present, flue gas desulfurization and denitrification controls sulfur dioxide and the most effective technology of nitrogen oxides pollution.
Flue gas desulfurization technique is mainly divided into wet desulphurization and the large class of dry desulfurization two.So-called wet desulphurization, main method is that the sulfur dioxide sprayed in lime white and flue gas reacts the calcium sulfate gypsum generating pulpous state, because the calcium sulfate gypsum impurity of pulpous state is more, cannot effectively utilize at present, therefore wet method removes the sulfur dioxide in flue gas, not only investment is large, and operating cost is high, but also can produce secondary pollution.These shortcomings seriously constrain promoting the use of and development of wet method.So-called dry flue gas desulphurization is that application powdery or granular absorbent, adsorbent or catalyst are to remove the SO in flue gas
2.Advantage is that technical process is simple, without sewage, dirty acid treatment problem, energy consumption is low, and particularly after purification, flue-gas temperature is higher, is conducive to chimney exhaust diffusion, " white cigarette " phenomenon can not be produced, flue gas after purification does not need post bake, and corrosivity is little, and its shortcoming is that desulfuration efficiency is lower, equipment is huge, investment is large, floor space is large, and operating technology requires high.
The control of current domestic nitrogen oxide mainly relies on low NO
xcombustion control technology, the problem that the denitration technology ubiquity denitration efficiency of commercial Application is lower, can not meet the strict discharge standard of China.Take the denitration engineering project that selective catalytic reduction reaction (SCR) technology is built, adopt denitrating catalyst to be high temperature denitrating catalyst, denitrating technique adopts traditional high-temperature high dust arrangement usually, before being arranged in dust-removing desulfurating apparatus by denitration catalyst reactor, reaction temperature is generally about 350 DEG C.When adopting this arrangement, the cost transformed original production workshop section is higher, and catalyst exposure is in the complicated flue gas of the grey high-sulfur of height, easily weares and teares, poisoning, affect catalyst life.
There is bibliographical information, have developed the low-temperature denitration catalyst that Applicable temperature is 160 DEG C ~ 240 DEG C.Adopt this low-temperature denitration catalyst to carry out denitration to flue gas, technology arrangement mode has two kinds, one be denitration catalyst reaction bed is arranged in deduster after, before desulphurization reaction bed; Another kind be denitration catalyst reaction bed is arranged in desulphurization reaction bed after.For front a kind of arrangement, advantage directly to remove nitrogen oxides in effluent, do not need to carry out dehumidifying heating to flue gas, floor space is little, but denitrating catalyst has strict demand to the dust content in flue gas and content of sulfur dioxide, and content of sulfur dioxide in flue gas is usually all higher, therefore, this kind of arrangement flue gas that can be suitable for is considerably less.For rear a kind of arrangement, although flue gas content of sulfur dioxide after desulfurization is low, the requirement of denitrating catalyst to sulfur dioxide in flue gas content can be met, but the temperature of flue gas after desulfurization only has 50 DEG C ~ 70 DEG C, and denitrating flue gas needs to carry out 160 DEG C ~ 240 DEG C operating temperatures, therefore need the temperature of flue gas to be heated to 160 DEG C ~ 240 DEG C by 50 DEG C ~ 70 DEG C, this just causes heating energy consumption high, flue gas desulfurization and denitrification operating cost is high, and the enthusiasm that enterprise governance is polluted is not high.
Summary of the invention
For the deficiency that the flue gas desulfurization and denitrification technology of prior art exists, the purpose of this utility model aims to provide a kind of new flue gas low-temperature combined desulfurization and denitration implant system, to overcome the flue gas narrow application range that existing flue gas desulfurization and denitrification technology exists, or heating energy consumption is high, the problems such as operating cost is high.
The flue gas low-temperature combined desulfurization and denitration apparatus system that the utility model provides, its formation mainly comprises separation of flow regenerative system and denitrating system, described desulfurization regeneration system comprises tempering tower again, the inside being no less than 2 is provided with the desulfurizing tower of low-temp desulfurization beds, the regeneration liquid pool for splendid attire different sulfuric acid concentration cleaning solution that arrange corresponding to desulfurizing tower, regenerated liquid delivery pump and purging air delivery pump, the air inlet of tempering tower is connected with udst separation flue gas source by pipeline, outlet is connected with the gas approach of desulfurizing tower by pipeline, the import of regenerated liquid delivery pump is connected with regeneration liquid pool by pipeline, outlet is connected with the cleaning solution import being positioned at desulfurizing tower top by pipeline, the outlet of purging air delivery pump is connected with the purging air import being positioned at desulfurizing tower top by pipeline, desulfurization fume outlet on desulfurizing tower is connected with the import of denitrating system by pipeline, the bottom design of desulfurizing tower has the outlet of cleaning solution and purging air, by realizing in parallel with the control valve on the connecting line that flue gas is given vent to anger between main pipe rail or be arranged in series being arranged on flue gas inlet manifold road between desulfurizing tower,
Described denitrating system comprises the dehumidifying tower removing moisture in desulfurization fume, the heater of heating desulfurization fume, utilize the ammonia diluter of Dilution air ammonia, mixing desulfurization fume is provided with the denitrating tower of low-temperature denitration catalyst bed with the mixing column and inside that dilute ammonia, the dehumidifying gas approach of tower and the flue gas after desulphurization system desulfurization main pipe rail of giving vent to anger is connected, exhanst gas outlet after its dehumidifying is connected with the gas approach of heater with pipeline by desulfurization fume delivery pump, the outlet adding heat smoke of heater is connected with the import of mixing column respectively by pipeline with the dilution ammonia outlet of ammonia diluter, the mixed flue gas outlet being mixed with ammonia of mixing column is connected with the import of denitrating tower by pipeline, the purifying smoke outlet being positioned at denitrating tower top is connected with chimney by pipeline.
In technique scheme of the present utility model, the desulfurizing tower of described desulfurization regeneration system is paid the utmost attention to and is designed to 4,4 desulfurizing towers are by being arranged on the control valve on the connecting line that flue gas inlet manifold road and flue gas give vent to anger between main pipe rail, make a part of desulfurizing tower in 4 desulfurizing towers be in desulfurization operations, another part desulfurizing tower is in regenerative operation.4 desulfurizing towers of desulfurization regeneration system, be further advanced by and be arranged on 3 control valves on the connecting line that flue gas inlet manifold road and flue gas give vent to anger between main pipe rail, the a part of desulfurizing tower realized in 4 desulfurizing towers is in desulfurization operations, and another part desulfurizing tower is in regenerative operation.Control valve preferentially selects butterfly valve.
In technique scheme of the present utility model, described regeneration liquid pool pays the utmost attention to the below that correspondence is arranged on desulfurizing tower, and the cleaning solution outlet connecing and be positioned at bottom desulfurizing tower is sucked in the pond of regeneration liquid pool.
In technique scheme of the present utility model, the cleaning solution outlet be positioned at bottom desulfurizing tower exports with purging air, can arrange respectively, also can be same outlet, a kind of structure after preferential employing.
In technique scheme of the present utility model, connection tempering tower air inlet and udst separation flue gas source capsule road are provided with flue gas delivery pump, by flue gas delivery pump, denitration flue gas to be desulfurization are transported to desulfurizing tower through tempering tower.
In technique scheme of the present utility model, the denitrating tower of described denitrating system is preferably set to two, and two denitrating towers are arranged in parallel by the control valve on air inlet pipeline, and a tower denitration runs, and a tower is for subsequent use.
In technique scheme of the present utility model, step-down condensation structure dehumidifying tower preferentially selected by the described dehumidifying tower in denitrating system, to reduce manufacturing cost.
In technique scheme of the present utility model, the described heater in denitrating system is electric heater.
In technique scheme of the present utility model, the described ammonia diluter in denitrating system is connected with the liquid ammonia steel bottle as ammonia source of the gas.
The flue gas low-temperature combined desulfurization and denitration apparatus system adopting the utility model to provide carries out desulphurization denitration, desulfurization condition requirement is met for dust content after dedusting, temperature is or/and humidity can not meet the flue gas of desulfurization condition requirement, flue gas is before the desulfurization of feeding desulfurizing tower, needing first flue gas to be sent into desulfurization tempering tower carries out modified, and the temperature of flue gas is met desulfurization condition requirement or/and humidity is adjusted to.Oxygen content in flue gas generally can desulfurization condition requirement, when the oxygen content that the oxygen content in flue gas is required to meet lower than desulfurization condition, generally take flue gas carry out desulfurization modified before, oxygen content in flue gas is adjusted to by passing into a certain amount of air the oxygen content meeting desulfurization condition requirement.
The flue gas low-temperature combined desulfurization and denitration apparatus system adopting the utility model to provide carries out desulphurization denitration, and each desulfurizing tower is the desulfurizing tower of independent operation, wherein a part of tower desulfurization operation, and a part of tower regeneration runs.For 4 desulfurizing towers usually arranged, according to the situation of sulfur dioxide in flue gas content, three towers parallel connections or series connection desulfurization operations can be taked to run, and a tower regenerative operation runs, also can be that two towers parallel connections or series connection desulfurization operations are run, two tower regenerative operations run.General sulfur dioxide concentration of working as in flue gas after desulfurization rises to 50 ~ 100mg/Nm
3time, tower desulfurization operation need be stopped, needing to carry out regenerative operation to desulfurizing agent bed.Desulfurizing agent bed regenerative operation, preferentially selects the sulfuric acid solution of 4 kinds of variable concentrations and clear water to carry out descending concentrations gradient wash to beds successively by the height of sulfuric acid concentration.Desulfurization operations temperature is 50 DEG C ~ 150 DEG C, preferably 60 DEG C ~ 120 DEG C, particularly preferably 70 DEG C ~ 100 DEG C; Relative humidity is 6% ~ 12%.
The flue gas low-temperature combined desulfurization and denitration apparatus system adopting the utility model to provide carries out desulphurization denitration, the mixing column in denitrating system, flue gas and nitrogen (NH
3with NO
x) mol ratio general control in (1 ~ 1.5): 1 scope.The ammonia mixed with flue gas is for dilute ammonia, and ammonia gas and air in dilution ammonia are preferably by 1:(2 ~ 5) volume ratio first mix after send into mixing column again, mix again with the flue gas of feeding.
The flue gas low-temperature combined desulfurization and denitration apparatus system adopting the utility model to provide carries out desulphurization denitration, the desulphurization catalyst used take Carbon Materials as carrier, with the low temperature composite desulfate catalyst that nickel, titanium, cerium etc. are active component, by country of Sichuan University flue-gas desulfurizing engineering Technical Research Center Development and Production, sell towards the society, the name of product is called SO
2low temperature catalyst, reactivity temperature 50-150 DEG C, SO
2concentration accommodation 600-7000mg/m
3, conversion ratio can reach more than 99%.The denitrating catalyst used take active carbon as carrier, with cerium, metal oxide for active component, be equipped with the denitration low temperature catalyst that adhesive is made, by country of Sichuan University flue-gas desulfurizing engineering Technical Research Center Development and Production, sell towards the society, the name of product is called NO
xlow temperature catalyst, reactivity temperature 80-158 DEG C, NO
xconcentration accommodation 500-2000mg/m
3, conversion ratio can reach more than 80%.
The flue gas low-temperature combined desulfurization and denitration apparatus system that the utility model provides is by novel low-temp desulfurization catalysis method and low temperature NH
3-SCR method combine formed a kind of combined desulfurization and denitration technology.Desulfurization adopts new type low temperature catalysis method can realize the regeneration of flue gas desulfurization and desulfurizing agent, and carry out in the regenerative process of desulfurizing agent at a desulfurizing tower, do not affect the flue gas desulfurization process of other desulfurizing towers, ensure that the efficiency of desulfurization, and by-product sulfuric acid produces, in unharmful substance entered environment, its production process environmental protection, can realize recycling of resource.Denitration adopts low temperature NH
3-SCR, have stable, efficiency is high, low power consumption and other advantages.Choose suitable ammonia nitrogen ratio, both ensure that higher denitration activity, and also can not cause more NH
3escape.Before desulphurization system is placed in denitrating system by the utility model, and before denitration, desulfurization dehumidifying is carried out to flue gas, reduce moisture and sulphur to the impact of denitrating catalyst activity, the long-term Effec-tive Function of denitrating catalyst can be ensured, running time can reach 3 years, does not need to carry out regeneration process to denitrating catalyst.In addition, denitration operating temperature of the present utility model is only 80 DEG C ~ 158 DEG C, than the denitration operating temperature 160 DEG C ~ 248 DEG C of existing low-temperature denitration technology, temperature reduces greatly, flue gas is heated to 80 DEG C ~ 158 DEG C denitration operating temperatures by temperature 50 C ~ 150 after desulfurization DEG C by the utility model, the temperature amplitude of heat temperature raising reduces greatly, reduces heating energy consumption and operating cost.The flue gas low-temperature combined desulfurization and denitration apparatus system that the utility model proposes, has desulfurization and denitration efficiency is high, stable, technique is simple, and floor space is little, and capital expenditure is few, convenient management, the advantages such as production cost is low, have significant economic and environmental benefit and wide application prospect.
Accompanying drawing explanation
Fig. 1 is low temperature combined desulfurization and denitrification process flow chart of the present utility model.
Label in figure is respectively: 1-purges air pump, 2-control valve, and 3-dehumidifies tower, 4-heater, 5-mixing column, 6-denitrating tower, 7-ammonia diluter, 8-liquid ammonia steel bottle, 9-desulfurization fume delivery pump, 10-regenerated liquid delivery pump, 11-regenerates liquid pool, 12-desulfurizing tower, 13-tempering tower, 14-flue gas delivery pump.
Detailed description of the invention
Be embodied as example with the utility model in coke-oven plant of Wuhai of Inner Mongolia below, further illustrate the utility model, but therefore the utility model is not limited among described scope of embodiments.The flue-gas temperature of this coke-oven plant is about 150 DEG C, and humidity of flue gas meets the requirement of sulfur removal technology to moisture, requires that the discharge gas content of sulfur dioxide after desulphurization denitration process is not higher than 50mg/Nm
3, the content of nitrogen oxide is not higher than 100mg/Nm
3.
The apparatus system of the present embodiment as shown in Figure 1.The desulphurization system of the present embodiment uses four desulfurizing towers, four desulfurizing towers are by being arranged on the control valve 2 on the connecting line that flue gas inlet manifold road and flue gas give vent to anger between main pipe rail and controlling to enter the flue gas flow of desulfurizing tower, and according to the size of smoke discharge amount and the height of sulfur dioxide in flue gas content, four desulfurizing towers can be arranged as different parallel waies, series system, realize desulfurization operations and regenerative operation, switch between desulfurization and regeneration, and stop.
The flue gas low-temperature combined desulfurization and denitration apparatus system of the present embodiment, its structure as shown in Figure 1, be made up of desulfurization regeneration system and denitrating system, the flue gas delivery pump 14 that described desulfurization regeneration system is connected with udst separation flue gas source capsule road by import again, the tempering tower 13 be connected is exported by pipeline and flue gas delivery pump, the inside of 4 is provided with the desulfurizing tower 12 of low-temp desulfurization beds, correspondence is arranged on the regeneration liquid pool 11 for the different sulfuric acid concentration cleaning solution of splendid attire below desulfurizing tower, regenerated liquid delivery pump 10 and purging air delivery pump 1, the exhanst gas outlet of tempering tower is connected with the flue gas inlet manifold of desulfurizing tower, the import of regenerated liquid delivery pump is connected with regeneration liquid pool by pipeline, outlet is connected with the cleaning solution import being positioned at desulfurizing tower top by pipeline, the outlet of purging air delivery pump is connected with the purging air import being positioned at desulfurizing tower top by pipeline, the desulfurization fume outlet of desulfurizing tower is connected with the import of denitrating system by flue gas main pipe rail of giving vent to anger, the discharge connection that the bottom design of desulfurizing tower has cleaning solution and purging air to share, by realizing in parallel with the control butterfly valve of 4 on the connecting line that flue gas is given vent to anger between main pipe rail or be arranged in series being arranged on flue gas inlet manifold road between 4 desulfurizing towers,
Described denitrating system is again by the dehumidifying tower 3 of the step-down condensation structure for removing moisture in desulfurization fume, the heater 4 of the electric heating device of heating desulfurization fume, utilize the ammonia diluter 7 of Dilution air ammonia, the ammonia source steel cylinder 8 be connected with ammonia diluter by pipeline, mixing desulfurization fume is provided with the denitrating tower 6 of low-temperature denitration catalyst bed with the mixing column 5 and inside that dilute ammonia, the dehumidifying gas approach of tower and the flue gas after desulphurization system desulfurization main pipe rail of giving vent to anger is connected, exhanst gas outlet after its dehumidifying is connected with the gas approach of heater with pipeline by desulfurization fume delivery pump 9, the heating exhanst gas outlet of heater is connected with the import of mixing column respectively by pipeline with the dilution ammonia outlet of ammonia diluter, the mixed flue gas outlet being mixed with ammonia of mixing column is connected with the air inlet be positioned at bottom denitrating tower by pipeline, the purifying smoke outlet being positioned at denitrating tower top is connected with chimney by pipeline.
Desulphurization system in flue gas low-temperature combined desulfurization and denitration apparatus system is run, flue gas through udst separation sends into desulfurization tempering tower by flue gas delivery pump 14, the data obtained by the temperature sensor arranged in tempering tower and humidity sensor are learnt, the flue-gas temperature of about 150 DEG C meets desulfurization temperature conditional request, water capacity meets the conditional request of sulfur removal technology to moisture, therefore does not need to carry out the process of heating humidification to flue gas.Flue gas is entered by desulfurizing tower 12 bottom, flow through the low-temp desulfurization beds in tower, sulfur dioxide in flue gas, oxygen are oxidized to sulfur trioxide under the catalysed oxidn of catalyst, water effect in sulfur trioxide and flue gas generates sulfuric acid, on a catalyst, the flue gas after desulfurization is delivered to denitrating system after discharging from desulfurizing tower top in attachment.
When the content of sulfur dioxide in the flue gas of discharging from desulfurizing tower is greater than about 50mg/Nm
3time, the low-temp desulfurization beds in desulfurizing tower is regenerated.First close the smoke entrance of desulfurizing tower by controlling butterfly valve 2 during regeneration, the dilute sulfuric acid extracted successively in four different regeneration liquid pools 11 of concentration by regenerated liquid delivery pump 10 carries out gradient wash, dilute sulfuric acid about the purge column 15min of each concentration, finally rinse about 15min with clear water, the dilute sulfuric acid that after washing, concentration increases flows back in corresponding washing liquid pool.Cleaning solution as accessory substance is the sulfuric acid solution that concentration increases gradually, removes after sulfuric acid concentration increases to 30%.
Low-temp desulfurization beds, after rinsing regeneration, is opened and is purged air pump 1, purges desulfurizing tower more than beds 6h, can complete the regeneration of desulfurizing tower with air.Through the desulfurizing tower of regeneration, normally can run more than 70h, and maintain desulfurization degree and be greater than 95%.Be provided with the thief hatch of flue gas analyzer at the smoke entrance of desulfurizing tower, when exporting sulfur dioxide concentration and being increased to designing requirement, by the duty regulating corresponding butterfly valve to switch tower, carry out regenerative operation subsequently.
Denitrating system in flue gas low-temperature combined desulfurization and denitration apparatus system runs, and the flue gas after desulfurization enters the dehumidifying tower 3 of step-down condensation structure, and pressure and temperature reduce, the condensate moisture in flue gas, and condensed water is constantly discharged from the osculum of dehumidifying tower bottom.Dehumidifying tower serves minimizing flue gas moisture, reduces the corrosion to desulfurization fume delivery pump 9 and follow-up equipment, and can reduce the impact of moisture on denitrating catalyst activity.Flue gas after dehumidifying enters heater 4, enters mixing column after flue-gas temperature being risen to about 140 DEG C, fully mixes at blender 5 with the ammonia after the dilution of injecting from ammonia diluter 7.Mixed flue gas enters denitrating tower 6.Denitrating tower is provided with two, and two denitrating towers take alternate run mode to arrange, flue gas after the low-temperature denitration recall agent bed in denitrating tower from smoke stack emission.The concentration of the nitrogen oxides in effluent of ammonia injection rate according to flue gas analyzer, by ammonia nitrogen mol ratio 1:1, by regulating the flowmeter connecting ammonia bottle 8, control the ammonia flow of the system that enters, and 3 times that control that diluent air flow is ammonia flow, run with this understanding, denitration efficiency is stabilized in more than 80%, and ammonia flood rate is lower.
The actual operation parameters of the present embodiment all reaches the requirement of design technology.
Although below describe detailed description of the invention of the present utility model in conjunction with the embodiments, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is that claims limit.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these embodiments, but these change and amendment all falls into protection domain of the present utility model.
Claims (10)
1. a flue gas low-temperature combined desulfurization and denitration apparatus system, comprises desulfurization regeneration system and denitrating system, it is characterized in that:
Described desulfurization regeneration system comprises tempering tower (13), the inside being no less than 2 is provided with the desulfurizing tower (12) of low-temp desulfurization beds, the regeneration liquid pool (11) for splendid attire different sulfuric acid concentration cleaning solution that arrange corresponding to desulfurizing tower, regenerated liquid delivery pump (10) and purging air delivery pump (1), the air inlet of tempering tower is connected with udst separation flue gas source by pipeline, outlet is connected with the gas approach of desulfurizing tower by pipeline, the import of regenerated liquid delivery pump is connected with regeneration liquid pool by pipeline, outlet is connected with the cleaning solution import being positioned at desulfurizing tower top by pipeline, the outlet of purging air delivery pump is connected with the purging air import being positioned at desulfurizing tower top by pipeline, desulfurization fume outlet on desulfurizing tower is connected with the import of denitrating system by pipeline, the bottom design of desulfurizing tower has the outlet of cleaning solution and purging air, by realizing in parallel with the control valve (2) on the connecting line that flue gas is given vent to anger between main pipe rail or be arranged in series being arranged on flue gas inlet manifold road between desulfurizing tower,
Described denitrating system comprises the dehumidifying tower (3) removing moisture in desulfurization fume, the heater (4) of heating desulfurization fume, utilize the ammonia diluter (7) of Dilution air ammonia, mixing desulfurization fume is provided with the denitrating tower (6) of low-temperature denitration catalyst bed with the mixing column (5) and inside that dilute ammonia, the gas approach of dehumidifying tower (3) and the main pipe rail of giving vent to anger of the flue gas after desulphurization system desulfurization are connected, exhanst gas outlet after its dehumidifying is connected with the gas approach of heater with pipeline by desulfurization fume delivery pump (9), the heating exhanst gas outlet of heater is connected with the import of mixing column respectively by pipeline with the dilution ammonia outlet of ammonia diluter, the mixed flue gas outlet being mixed with ammonia of mixing column is connected with the import of denitrating tower by pipeline, the purifying smoke outlet being positioned at denitrating tower top is connected with chimney by pipeline.
2. flue gas low-temperature combined desulfurization and denitration apparatus system according to claim 1, it is characterized in that, the desulfurizing tower of described desulfurization regeneration system is 4,4 desulfurizing towers are by being arranged on the control valve (2) on the connecting line that flue gas inlet manifold road and flue gas give vent to anger between main pipe rail, make a part of desulfurizing tower in 4 desulfurizing towers be in desulfurization operations, another part desulfurizing tower is in regenerative operation.
3. flue gas low-temperature combined desulfurization and denitration apparatus system according to claim 2, it is characterized in that, 4 desulfurizing towers of desulfurization regeneration system are by being arranged on 3 control valves (2) on the connecting line that flue gas inlet manifold road and flue gas give vent to anger between main pipe rail, the a part of desulfurizing tower realized in 4 desulfurizing towers is in desulfurization operations, and another part desulfurizing tower is in regenerative operation.
4. flue gas low-temperature combined desulfurization and denitration apparatus system according to claim 3, is characterized in that, described regeneration liquid pool correspondence is arranged on the below of desulfurizing tower, and the cleaning solution outlet connecing and be positioned at bottom desulfurizing tower is sucked in the pond of regeneration liquid pool.
5. flue gas low-temperature combined desulfurization and denitration apparatus system according to claim 4, is characterized in that, the cleaning solution outlet be positioned at bottom desulfurizing tower exports as same outlet with purging air.
6. according to the flue gas low-temperature combined desulfurization and denitration apparatus system one of claim 1 to 5 Suo Shu, it is characterized in that, connection tempering tower air inlet and udst separation flue gas source capsule road are provided with flue gas delivery pump (14).
7. according to the flue gas low-temperature combined desulfurization and denitration apparatus system one of claim 1 to 5 Suo Shu, it is characterized in that, the denitrating tower of described denitrating system is set to two, and two denitrating towers are arranged in parallel by the control valve on air inlet pipeline.
8. flue gas low-temperature combined desulfurization and denitration apparatus system according to claim 7, is characterized in that, described dehumidifying tower is step-down condensation structure dehumidifying tower.
9. flue gas low-temperature combined desulfurization and denitration apparatus system according to claim 7, is characterized in that, described heater is electric heater.
10. flue gas low-temperature combined desulfurization and denitration apparatus system according to claim 7, is characterized in that, described ammonia diluter (7) is connected with the liquid ammonia steel bottle as ammonia source of the gas.
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| CN107126837A (en) * | 2017-07-01 | 2017-09-05 | 成都国化环保科技有限公司 | A kind of regenerative system for flue gas desulfurization device line |
| CN107126839A (en) * | 2017-07-01 | 2017-09-05 | 成都国化环保科技有限公司 | A kind of denitrating tower for denitration device line |
| CN107138042A (en) * | 2017-07-01 | 2017-09-08 | 成都国化环保科技有限公司 | A kind of flue gas denitrification equipment line |
| CN107138043A (en) * | 2017-07-01 | 2017-09-08 | 成都国化环保科技有限公司 | A kind of flue gas conditioning component for denitration device line |
| CN108014613A (en) * | 2016-11-02 | 2018-05-11 | 煤科院节能技术有限公司 | A kind of damp dry type flue gas purifying system and method based on Carbon Materials oxidation and denitration |
| CN109539239A (en) * | 2018-11-23 | 2019-03-29 | 兖矿集团有限公司 | A kind of low heat-extraction system and its processing method of coal-burning boiler |
| CN112191098A (en) * | 2020-09-30 | 2021-01-08 | 江苏扬子催化剂有限公司 | Low-temperature denitration granular catalyst and honeycomb catalyst series-parallel combined reaction process |
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| CN108014613A (en) * | 2016-11-02 | 2018-05-11 | 煤科院节能技术有限公司 | A kind of damp dry type flue gas purifying system and method based on Carbon Materials oxidation and denitration |
| CN107126837A (en) * | 2017-07-01 | 2017-09-05 | 成都国化环保科技有限公司 | A kind of regenerative system for flue gas desulfurization device line |
| CN107126839A (en) * | 2017-07-01 | 2017-09-05 | 成都国化环保科技有限公司 | A kind of denitrating tower for denitration device line |
| CN107138042A (en) * | 2017-07-01 | 2017-09-08 | 成都国化环保科技有限公司 | A kind of flue gas denitrification equipment line |
| CN107138043A (en) * | 2017-07-01 | 2017-09-08 | 成都国化环保科技有限公司 | A kind of flue gas conditioning component for denitration device line |
| CN109539239A (en) * | 2018-11-23 | 2019-03-29 | 兖矿集团有限公司 | A kind of low heat-extraction system and its processing method of coal-burning boiler |
| CN112191098A (en) * | 2020-09-30 | 2021-01-08 | 江苏扬子催化剂有限公司 | Low-temperature denitration granular catalyst and honeycomb catalyst series-parallel combined reaction process |
| CN114832870A (en) * | 2022-04-29 | 2022-08-02 | 昆明理工大学 | Integrated regenerating unit of desulfurization catalyst |
| CN114832870B (en) * | 2022-04-29 | 2022-11-18 | 昆明理工大学 | Integrated regenerating unit of desulfurization catalyst |
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