CN203857746U - SCR (selective catalytic reduction) catalyst regeneration drying device - Google Patents
SCR (selective catalytic reduction) catalyst regeneration drying device Download PDFInfo
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- CN203857746U CN203857746U CN201420269647.XU CN201420269647U CN203857746U CN 203857746 U CN203857746 U CN 203857746U CN 201420269647 U CN201420269647 U CN 201420269647U CN 203857746 U CN203857746 U CN 203857746U
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Abstract
The utility model provides an SCR (selective catalytic reduction) catalyst regeneration drying device. The SCR catalyst regeneration drying device comprises a pre-drying unit and a drying unit, wherein the pre-drying unit comprises a drying shell, a drying air feed portion and a drying heating portion, wherein the drying air feed portion is communicated with the drying shell and feeds air, and the drying heating portion is arranged between the drying air feed portion and the drying shell and heating the drying air. The drying unit comprises a sealed drying shell and a heating structure, wherein the sealed drying shell is provided with an air outlet, and the heating structure is arranged in the sealed drying shell and heats the same. The drying heating portion is communicated with the air outlet, and sends hot air discharged from the air outlet into the drying shell. The SCR catalyst regeneration drying device is capable of quickly and effectively drying SCR catalyst and improving production efficiency.
Description
Technical field
The utility model relates to catalyst regeneration apparatus field, in particular to a kind of SCR catalyst regeneration drying device.
Background technology
Along with NOx discharge is day by day serious, during " 12 ", China is more and more stricter to the control of nitrogen oxide (NOx) discharge, and SCR (SCR) denitration technology is efficient because having, denitration performance is widely used in the denitrating system of coal-burning power plant reliably.In whole SCR denitrating system, catalyst is core component, and the proportion accounting in equipment direct investment is larger.The mode of appearance of SCR catalyst has honeycomb fashion, flat and corrugated.The catalyst module major part of SCR denitrating system is taked high dirt arrangement, the denitration performance of operation a period of time rear catalyst can decline, cause the reason of catalysqt deactivation to have a lot, the impact of existing operating condition, the infringement that for example dust in flue gas and temperature fluctuation cause catalyst macrostructure, also have the effect of various poisonous and harmful chemical compositions in flue gas, the toxic action that wherein arsenic element, alkali metal, alkaline-earth metal and metal oxide have is the most obvious.It is only 2--3 that these factors make the service life of SCR denitrating catalyst, and the initial investment of catalyst accounts for 40%-60% of SCR denitrating system gross investment, makes catalyst become expensive running stores.In addition the SCR catalyst of inactivation is not if suitably disposed and will human body and environment be caused to extremely strong toxic action.If the catalyst of inactivation is regenerated to process, SCR catalyst life cycle be can effectively extend, financial cost and toxic action reduced.Therefore to SCR denitrating catalyst, regenerate significant.
Catalyst is dry is important step in catalyst regeneration process, the necessary bone dry of catalyst after regeneration, but catalyst hydrophily is strong, directly be dried, can cause very large pressure to drying system equipment, cause that dry that operating load is set is high, service life of equipment shortens, and this has improved production cost greatly.
Utility model content
The utility model aims to provide a kind of SCR catalyst regeneration drying device, and long to solve SCR catalyst dry run of the prior art, equipment bears pressure and causes greatly short problem in service life.
To achieve these goals, according to an aspect of the present utility model, a kind of SCR catalyst regeneration drying device is provided, this SCR catalyst regeneration drying device comprises: prebake unit, prebake unit comprise dry housing, with dry that housing is communicated with and the oven dry air supplying part of blow and be arranged on oven dry air supplying part and oven dry housing between also the oven dry of heating, drying wind accompany hot portion; Drying unit, drying unit comprise be provided with gas outlet dry seal casinghousing, be arranged in dry seal casinghousing and the heating arrangement that dry seal casinghousing is heated, dry the hot portion of companion and be communicated with gas outlet, and by the sirocco reclamation of discharging from gas outlet and send in oven dry housing.
Further, dry the hot portion of companion and comprise companion's heat pipe and companion's air-heater, companion's heat pipe is communicated with the gas outlet of dry seal casinghousing, reclaims by gas outlet effluent air, and companion's air-heater is communicated with companion's heat pipe and the gas of accompanying heat pipe to reclaim is blowed to drying in housing.
Further, dry seal casinghousing comprises a plurality of housing units that are interconnected and place successively, and the top of each housing unit is provided with gas outlet, and companion's heat pipe is all communicated with a plurality of gas outlets.
Further, dry air supplying part and comprise air guide structure and dry blower fan, dry blower fan and have exhaust passage, air guide structure is connected with exhaust passage, and stretches in oven dry housing, and air guide structure has a plurality of air outlets, and a plurality of air outlets set gradually along straight line.
Further, air guide structure comprises a plurality of air-out guide plates, and the air intake of a plurality of air-out guide plates is all arranged in exhaust passage movably, and adjacent two air-out guide plates form an air outlet.
Further, be provided with a plurality of chutes that extend along air-out direction in exhaust passage, a plurality of chutes arrange along the short transverse interval of exhaust passage, and air-out guide plate selectively inserts in chute.
Further, air-out guide plate comprises straightway and arc section, and arc section is arranged on SCR catalyst to be regenerated top, and the air-out direction of arc section straight down, and straightway is connected between arc section and exhaust passage.
Further, dry air supplying part and also comprise frequency converter, frequency converter is electrically connected to drying blower fan, and controls the rotating speed of the motor of drying blower fan.
Further, drying unit also comprises heat-circulation structure, heat-circulation structure is arranged in dry seal casinghousing corresponding to heating arrangement, heat-circulation structure comprises circulation pipe and circulating fan, circulating fan is fixedly installed on the top of dry seal casinghousing, and is communicated with circulation pipe, and circulation pipe is arranged on dry seal casinghousing, the heat of the mobile conduction heating arrangement by the circulatory mediator in circulation pipe, makes the temperature in dry seal casinghousing even.
Application the technical solution of the utility model, SCR catalyst regeneration drying device comprises prebake unit and drying unit.Wherein, prebake unit is treated the surface of regeneration SCR catalyst and is carried out rapid draing, prebake unit comprise dry housing, with dry that housing is communicated with and the oven dry air supplying part of blow and be arranged on oven dry air supplying part and oven dry housing between also the oven dry of heating, drying wind accompany hot portion.Drying unit is treated the surface of regeneration SCR catalyst and duct, and to carry out deep layer dry, drying unit comprise be provided with gas outlet dry seal casinghousing, be arranged in dry seal casinghousing and the heating arrangement that dry seal casinghousing is heated, dry the hot portion of companion and be communicated with gas outlet, and by the sirocco reclamation of discharging from gas outlet and send in oven dry housing.By the rapid draing of prebake unit, reduce the drying pressure of drying unit, and then reduced the apparatus of load of drying unit, can guarantee good drying effect simultaneously.Prebake unit adopt to dry air supplying part blow dry, fast drying like this, drying efficiency is high, and the oven dry of prebake unit accompanies hot portion to reclaim the heat of drying unit discharge, has realized the recycling of the energy, has reduced energy dissipation.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the SCR catalyst regeneration drying device of embodiment of the present utility model.
Description of reference numerals: 41, dry housing; 421, dry blower fan; 422, air guide structure; 51, dry seal casinghousing; 511, gas outlet.
The specific embodiment
Hereinafter with reference to accompanying drawing, also describe the utility model in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
As shown in Figure 1, according to embodiment of the present utility model, SCR catalyst regeneration drying device comprises prebake unit and drying unit.Wherein, prebake unit is treated the surface of regeneration SCR catalyst and is carried out rapid draing, prebake unit comprise dry housing 41, with dry that housing 41 is communicated with and air-supply and dry air supplying part and be arranged on and dry between air supplying part and oven dry housing 41 the also oven dry of heating, drying wind and accompany hot portion.Drying unit is treated the surface of regeneration SCR catalyst and duct, and to carry out deep layer dry, drying unit comprise be provided with gas outlet 511 dry seal casinghousing 51, be arranged in dry seal casinghousing 51 and the heating arrangement that dry seal casinghousing 51 is heated, dry the hot portion of companion and is communicated with gas outlet 511, and by the sirocco reclamations from gas outlet 511 discharges and send in oven dry housing 41.By the rapid draing of prebake unit, reduce the drying pressure of drying unit, and then reduced the apparatus of load of drying unit, can guarantee good drying effect simultaneously.Prebake unit adopt to dry air supplying part blow dry, fast drying like this, drying efficiency is high, and the oven dry of prebake unit accompanies hot portion to reclaim the heat of drying unit discharge, has realized the recycling of the energy, has reduced energy dissipation.
In the present embodiment, drying unit also comprises heat-circulation structure and recuperation of heat structure.
Dry seal casinghousing 51 comprises a plurality of housing units that are interconnected and place successively, and the top of each housing unit is provided with gas outlet 511, and companion's heat pipe is all communicated with a plurality of gas outlets 511.On each housing unit, all set out gas port 511 and can guarantee that the temperature and humidity everywhere of whole dry seal casinghousing 51 is all consistent, the degree of drying that guarantees dry seal casinghousing 51 SCR catalyst to be regenerated is everywhere consistent, has guaranteed the regeneration quality of SCR catalyst to be regenerated.
Heating arrangement has a plurality of, and a plurality of heating arrangements are spaced apart and arranged in below and the both sides of dry seal casinghousing 51 along the conveying track of SCR catalyst to be regenerated, and the space in dry seal casinghousing 51 is heated.Heating arrangement is electric heating wire, and electric heating wire is arranged on dry seal casinghousing 51 bottoms.
Heat-circulation structure has a plurality of, a plurality of heat-circulation structures and a plurality of heating arrangement are arranged in dry seal casinghousing 51 correspondingly, each heat-circulation structure comprises circulation pipe and circulating fan, circulation pipe is arranged on dry seal casinghousing 51, the heat of the mobile conduction heating arrangement by the circulatory mediator in circulation pipe, makes the temperature in dry seal casinghousing 51 even.
In the present embodiment, circulating fan is arranged on the top of dry seal casinghousing 51.The air inlet of circulating fan is communicated with the space in dry seal casinghousing 51, the gas outlet of circulating fan is connected with circulation pipe, the air outlet of circulation pipe is positioned at the bottom of dry seal casinghousing 51, circulating fan is extracted the air on the top of dry seal casinghousing 51 out, and by circulation pipe, is delivered to the bottom of dry seal casinghousing 51.Can accelerate so on the one hand upper layer of air in dry seal casinghousing 51 and the convection current of lower layer of air, near the hot-air of heating arrangement, can flow to quickly upper strata, contribute to the temperature in seal casinghousing even.
Recuperation of heat structure comprises the recovery tubes being arranged on dry seal casinghousing 51, recovery tubes is connected between the circulation pipe of the front end of dry seal casinghousing 51 and the circulation pipe in the rear end of dry seal casinghousing 51, makes the heat disturbance of rear end of dry seal casinghousing 51 to the front end of dry seal casinghousing 51.From being dried the air of the higher temperature of seal casinghousing 51 interior extractions, can be transmitted back to again in dry seal casinghousing 51 by recovery tubes, avoid the waste of heat, effectively save the energy.It should be noted that, the front end of dry seal casinghousing 51 refer to dry seal casinghousing 51 along the front end in the SCR catalyst transport direction to be regenerated on delivery track, the rear end of dry seal casinghousing 51 refer to dry seal casinghousing 51 along the rear end in the SCR catalyst transport direction to be regenerated on delivery track.
Dry the hot portion of companion and comprise companion's heat pipe and companion's air-heater, companion's heat pipe is communicated with the gas outlet 511 of dry seal casinghousing 51, recovery is by gas outlet 511 effluent airs, and companion's air-heater is communicated with companion's heat pipe and the gas of companion's heat pipe recovery is blowed to drying in housing 41.
In the present embodiment, companion's air-heater is arranged in companion's heat pipe, companion's heat pipe comprises the first paragraph being communicated with each gas outlet 511 and the second segment being communicated with oven dry housing 41, companion's air-heater is connected between first paragraph and second segment, with the hot-air that provides power that dry seal casinghousing 51 is discharged, sends into and dries in housing 41.For the convenient companion's heat pipe of controlling, on companion's heat pipe, be provided with the control valve of companion's heat pipe break-make.
Drying air supplying part comprises air guide structure 422, dries blower fan 421 and frequency converter, dry blower fan 421 and have exhaust passage, air guide structure 422 is connected with exhaust passage, and stretches in oven dry housing 41, air guide structure 422 has a plurality of air outlets, and a plurality of air outlets set gradually along straight line.Air guide structure 422 can guarantee that air-out is even, avoids local air-out too fast, guarantees that the drying regime of each several part of SCR catalyst to be regenerated is consistent.
Frequency converter is electrically connected to drying blower fan 421, and controls the rotating speed of the motor of drying blower fan 421.By Frequency Converter Control, dry the motor speed of blower fan 421, to control air output and the wind speed of drying blower fan 421, avoid that wind speed is too fast, air quantity is excessive causes the damage for the treatment of regeneration SCR catalyst.
In the exhaust passage of oven dry blower fan 421, be provided with a plurality of chutes that extend along air-out direction, a plurality of chutes arrange along the short transverse interval of exhaust passage.
Air guide structure 422 comprises a plurality of air-out guide plates, and the air intake of a plurality of air-out guide plates is all arranged in exhaust passage movably, and adjacent two air-out guide plates form an air outlet, and air-out guide plate selectively inserts in chute.
When using, the shape material of the SCR catalyst to be regenerated of drying as required and structural strength are determined wind speed and the air quantity of drying blower fan 421, and then determine wind speed everywhere and the air quantity of SCR catalyst to be regenerated.According to wind speed everywhere and the air quantity of the SCR catalyst to be regenerated determining, can determine the position of each air-out guide plate, so that wind speed and the air quantity of the air outlet that adjacent two air-out guide plates form satisfy the demands, to guarantee drying effect.
Air-out guide plate comprises straightway and arc section, and arc section is arranged on SCR catalyst to be regenerated top, and the air-out direction of arc section straight down, and straightway is connected between arc section and exhaust passage.Air-out straight down can be avoided air quantity decay, guarantees best drying effect.
By SCR catalyst regeneration drying device of the present utility model, carry out dry embodiment as follows:
Embodiment 1: get one case honeycomb fashion SCR catalyst, the about 2m of volume
3after being cleaned, SCR catalyst is lifted in preliminary drying cadre's oven dry housing 41, open the control valve on companion's heat pipe of drying the hot portion of companion, the hot blast oven dry wind that oven dry blower fan 421 blows out together that discharge gas outlet 511 is entered in oven dry housing 41 together, to heat drying wind, dry wind and blow the catalyst to SCR from SCR catalyst top, wind speed is controlled at 5m/s.SCR catalyst was dried after 30 minutes, and SCR catalyst surface adsorption moisture is removed more than 50%.
Embodiment 2: get a boxboard typed SCR catalyst, the about 2m of volume
3after being cleaned, SCR catalyst is lifted in preliminary drying cadre's oven dry housing 41, open the control valve on companion's heat pipe of drying the hot portion of companion, the hot blast oven dry wind that oven dry blower fan 421 blows out together that discharge gas outlet 511 is entered in oven dry housing 41 together, to heat drying wind, dry wind and blow the catalyst to SCR from SCR catalyst top, wind speed is controlled at 10m/s.SCR catalyst was dried after 20 minutes, and SCR catalyst surface adsorption moisture is removed more than 40%.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect: SCR catalyst regeneration drying device of the present utility model rational in infrastructure, simple to operate, can remove at short notice the most of water in catalyst.Preliminary drying cadre utilizes high-pressure hot wind to dry catalyst, and can remove and be adsorbed on the most moisture of catalyst surface, and can preheating catalyst.This has greatly reduced the drying time of follow-up drying section, has improved operating efficiency; And preliminary drying cadre's oven dry accompanies hot portion to recycle heat, energy-efficient.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a SCR catalyst regeneration drying device, is characterized in that, comprising:
Prebake unit, described prebake unit comprise the oven dry air supplying part of drying housing (41), be communicated with described oven dry housing (41) and blow and be arranged on described oven dry air supplying part and described oven dry housing (41) between also the oven dry of heating, drying wind accompany hot portion;
Drying unit, described drying unit comprises and is provided with the dry seal casinghousing (51) of gas outlet (511), the heating arrangement that is arranged in described dry seal casinghousing (51) and described dry seal casinghousing (51) is heated, described oven dry accompanies hot portion to be communicated with described gas outlet (511), and by the sirocco reclamation of discharging from described gas outlet (511) and send in described oven dry housing (41).
2. SCR catalyst regeneration drying device according to claim 1, it is characterized in that, described oven dry accompanies hot portion to comprise companion's heat pipe and companion's air-heater, described companion's heat pipe is communicated with the gas outlet (511) of described dry seal casinghousing (51), recovery is by described gas outlet (511) effluent air, and described companion's air-heater is communicated with described companion's heat pipe and the gas of described companion's heat pipe recovery is blowed to described oven dry housing (41).
3. SCR catalyst regeneration drying device according to claim 2, it is characterized in that, described dry seal casinghousing (51) comprises a plurality of housing units that are interconnected and place successively, described in each, the top of housing unit is provided with described gas outlet (511), and described companion's heat pipe is all communicated with described a plurality of gas outlets (511).
4. SCR catalyst regeneration drying device according to claim 1, it is characterized in that, described oven dry air supplying part comprises air guide structure (422) and dries blower fan (421), described oven dry blower fan (421) has exhaust passage, described air guide structure (422) is connected with described exhaust passage, and stretch in described oven dry housing (41), described air guide structure (422) has a plurality of air outlets, and described a plurality of air outlets set gradually along straight line.
5. SCR catalyst regeneration drying device according to claim 4, it is characterized in that, described air guide structure (422) comprises a plurality of air-out guide plates, the air intake of described a plurality of air-out guide plates is all arranged in described exhaust passage movably, and adjacent two described air-out guide plates form a described air outlet.
6. SCR catalyst regeneration drying device according to claim 5, it is characterized in that, in described exhaust passage, be provided with a plurality of chutes that extend along air-out direction, described a plurality of chutes arrange along the short transverse interval of described exhaust passage, and described air-out guide plate selectively inserts in described chute.
7. SCR catalyst regeneration drying device according to claim 5, it is characterized in that, described air-out guide plate comprises straightway and arc section, described arc section is arranged on SCR catalyst to be regenerated top, and the air-out direction of described arc section straight down, described straightway is connected between described arc section and described exhaust passage.
8. SCR catalyst regeneration drying device according to claim 4, it is characterized in that, described oven dry air supplying part also comprises frequency converter, and described frequency converter is electrically connected to described oven dry blower fan (421), and controls the rotating speed of the motor of described oven dry blower fan (421).
9. SCR catalyst regeneration drying device according to claim 1, it is characterized in that, described drying unit also comprises heat-circulation structure, described heat-circulation structure is arranged in described dry seal casinghousing (51) corresponding to described heating arrangement, described heat-circulation structure comprises circulation pipe and circulating fan, described circulating fan is fixedly installed on the top of described dry seal casinghousing (51), and be communicated with described circulation pipe, described circulation pipe is arranged on described dry seal casinghousing (51), the heat of the described heating arrangement of mobile conduction by the circulatory mediator in described circulation pipe, make the temperature in described dry seal casinghousing (51) even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420269647.XU CN203857746U (en) | 2014-05-23 | 2014-05-23 | SCR (selective catalytic reduction) catalyst regeneration drying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420269647.XU CN203857746U (en) | 2014-05-23 | 2014-05-23 | SCR (selective catalytic reduction) catalyst regeneration drying device |
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| CN203857746U true CN203857746U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420269647.XU Expired - Fee Related CN203857746U (en) | 2014-05-23 | 2014-05-23 | SCR (selective catalytic reduction) catalyst regeneration drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105311957A (en) * | 2015-12-01 | 2016-02-10 | 苏州华乐大气污染控制科技发展有限公司 | SCR denitration catalyst regeneration heat treating device |
-
2014
- 2014-05-23 CN CN201420269647.XU patent/CN203857746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105311957A (en) * | 2015-12-01 | 2016-02-10 | 苏州华乐大气污染控制科技发展有限公司 | SCR denitration catalyst regeneration heat treating device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanxi Xin Yuan environmental protection science and technology limited company Assignor: Beijing Sheng Xinqianyuan Science and Technology Ltd. Contract record no.: X2019990000263 Denomination of utility model: SCR (selective catalytic reduction) catalyst regeneration drying device Granted publication date: 20141001 License type: Exclusive License Record date: 20191220 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20210523 |
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| CF01 | Termination of patent right due to non-payment of annual fee |