CN202485381U - SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system - Google Patents
SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system Download PDFInfo
- Publication number
- CN202485381U CN202485381U CN2012200870720U CN201220087072U CN202485381U CN 202485381 U CN202485381 U CN 202485381U CN 2012200870720 U CN2012200870720 U CN 2012200870720U CN 201220087072 U CN201220087072 U CN 201220087072U CN 202485381 U CN202485381 U CN 202485381U
- Authority
- CN
- China
- Prior art keywords
- air
- steam
- air channel
- return air
- return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to an SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system, wherein a hot air duct is arranged on the lower part of a drying chamber, a general return air duct and branch return air ducts are arranged on the upper part of the drying chamber; the general return air duct is positioned on the axis of the drying chamber, and the branch return air ducts are symmetrically connected to two sides of the general return air duct and extend along the breadth direction of the drying chamber; the general return air duct is connected with a suction port of a circulating fan; the inlet of the general return air duct and the middle part of each branch return air duct are respectively provided with an adjusting valve; a heat exchanger is positioned on the air outlet duct of the circulating fan; a main steam pipe, a steam branch I and a steam branch II are communicated; the steam branch I is connected with the steam inlet of the heat exchanger; the steam branch II is connected with the air outlet duct of the circulating fan; the steam branch I and the steam branch II are respectively provided with a steam adjusting valve; the outlet duct of the circulating fan is connected with a moisture eliminating duct; and a moisture elimination duct adjusting valve is arranged at the inlet of the moisture eliminating duct. The system ensures more uniform temperature and humidity in the drying chamber.
Description
Technical field
The utility model relates to a kind of production equipment of SCR denitrating catalyst, particularly a kind of SCR denitrating catalyst primary drying hot air circulating system.
Background technology
The nitrogen oxides pollution of flue gas is on the rise at present, and country has strengthened the dynamics of forcing denitration.Denitration method for flue gas can be divided into two types of dry method and wet methods.The wherein selective catalytic reduction of dry method (be called for short SCR, Selective Catalytic Redution), SNCR (SNCR), non-selective catalytic reduction (NSCR), electron beam, molecular sieve, active carbon adsorption and combined desulphurization and denitrification process or the like.
Hygrometric state catalyst after the extrusion molding needs air-dry; Catalyst can cause the contraction of product on length and width because of losing of moisture in air-dry process; If at this moment the temperature field in the hothouse will cause the moisture on same catalyst to lose different with moisture field is inhomogeneous; Same catalyst contraction in the horizontal and vertical directions is inconsistent, thereby causes the catalyst cracking.
Existing SCR denitrating catalyst primary drying hot air circulating system comprises hothouse, heat exchanger and circulating fan; The hothouse bottom is provided with the hot blast air channel; Be evenly distributed with the hot blast air outlet on the hot blast air channel, hothouse top is provided with return airway, is evenly distributed with return air inlet on the return airway; The hot blast air channel links to each other with the outlet of circulating fan, and return airway links to each other with the suction inlet of circulating fan, and heat exchanger is positioned on the outlet air channel of circulating fan, and the steam inlet of heat exchanger is connected with main steam pipe.The weak point of this device is: the skewness of return airway, and inspectable space is few, and the temperature and humidity in the hothouse is inhomogeneous, causes the primary drying excessive cycle, even the dry products cracking, and this is the technical barrier of a long-term puzzlement catalyst industry.
The utility model content
The purpose of the utility model is, overcomes the problem that exists in the prior art, and a kind of SCR denitrating catalyst primary drying hot air circulating system is provided, and makes the temperature and humidity in the hothouse more even.
For solving above technical problem; A kind of SCR denitrating catalyst primary drying hot air circulating system that the utility model provided; Comprise hothouse, heat exchanger and circulating fan, said hothouse bottom is provided with the hot blast air channel, and said hot blast is evenly distributed with the hot blast air outlet on the air channel; Said hothouse top is provided with return airway, is evenly distributed with return air inlet on the said return airway; Said hot blast air channel links to each other with the outlet of said circulating fan; Said return airway links to each other with the suction inlet of said circulating fan; Said heat exchanger is positioned on the outlet air channel of said circulating fan; The steam inlet of said heat exchanger is connected with main steam pipe, and the return airway of said hothouse comprises total air channel of return air and return air branch air duct, and the total air channel of said return air is positioned on the axis of said hothouse; Said return air branch air duct symmetry is connected the both sides in the total air channel of said return air and extends along hothouse fabric width direction, and the total air channel of said return air links to each other with the suction inlet of said circulating fan.
With respect to prior art; The utility model has been obtained following beneficial effect: the total air channel of return air is positioned on the axis of hothouse; Return air branch air duct symmetry is connected the both sides in the total air channel of return air and extends along hothouse fabric width direction; Can make return air inlet cover the whole fabric width of hothouse, return air is more even, just makes that also temperature, the humidity in the hothouse is more even.
As the preferred version of the utility model, the porch in the total air channel of said return air is equipped with the total air channel of return air control valve, and the middle part of each said return air branch air duct is separately installed with return air branch air duct control valve; The left, center, right portion of said hothouse fabric width direction is provided with humidity sensor respectively, and the middle part of said hothouse fabric width direction is provided with temperature sensor.Can be according to the parameter of temperature sensor and left, center, right portion humidity sensor feedback, comprehensive adjustment left and right side return air branch air duct control valve and the total air channel of return air control valve, thus make the temperature and humidity in the hothouse satisfy technological requirement.
As the preferred version of the utility model, said main steam pipe is connected with steam branch road one and steam branch road two, and said steam branch road one links to each other with the steam inlet of said heat exchanger, and said steam branch road two links to each other with the outlet air channel of said circulating fan; In the said main steam pipe main steam control valve is installed, steam branch road one control valve is installed in the said steam branch road one, steam branch road two control valves are installed in the said steam branch road two.The aperture of adjustment main steam control valve can be adjusted the size of total quantity of steam; The aperture of adjustment steam branch road one control valve can be adjusted and get into the quantity of steam size that heat exchanger carries out indirect heat exchange, and the aperture of adjustment steam branch road two control valves can be adjusted the quantity of steam size in direct entering circulating fan outlet air channel.
As the preferred version of the utility model, be connected with the hydrofuge air channel on the outlet air channel of said circulating fan, the porch in said hydrofuge air channel is equipped with hydrofuge air channel control valve.The aperture of adjustment hydrofuge air channel control valve can be adjusted the hydrofuge amount.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation, accompanying drawing only provides reference and explanation usefulness, and is non-in order to restriction the utility model.
Fig. 1 is the sketch map of the utility model SCR denitrating catalyst primary drying hot air circulating system.
Among the figure: 1. hothouse, 2. hot blast air channel, 3. return air branch air duct, 3a. return air branch air duct control valve, the 4. total air channel of return air, the total air channel of 4a. return air control valve, 5. circulating fan, 6. heat exchanger, 7. hydrofuge air channel, 7a. hydrofuge air channel control valve, 8. main steam pipe, 8a. main steam control valve, 8-1. steam branch road one, 8-1a. steam branch road one control valve, 8-2. steam branch road two, 8-2a. steam branch road two control valves, 9. humidity sensor, 10. temperature sensor.
The specific embodiment
As shown in Figure 1, the SCR denitrating catalyst primary drying hot air circulating system of the utility model comprises hothouse 1, heat exchanger 6 and circulating fan 5, and hothouse 1 bottom is provided with hot blast air channel 2, is evenly distributed with the hot blast air outlet on the hot blast air channel 2.The return airway of hothouse 1 comprises total air channel 4 of return air and return air branch air duct 3; The total air channel 4 of return air is positioned on the axis of hothouse 1; Return air branch air duct 3 symmetries are connected the both sides in the total air channel 4 of return air and extend along hothouse fabric width direction, are evenly distributed with return air inlet on the return air branch air duct 3, and the total air channel 4 of return air links to each other with the suction inlet of circulating fan 5; The porch in the total air channel 4 of return air is equipped with the total air channel of return air control valve 4a, and the middle part of each return air branch air duct is separately installed with return air branch air duct control valve 3a.
The left, center, right portion of hothouse 1 fabric width direction is provided with humidity sensor 9 respectively, and the middle part of hothouse fabric width direction is provided with temperature sensor 10.Each control valve preferably adopts pneumatic control valve.
According to the parameter of temperature sensor 10 and left, center, right portion humidity sensor 9 feedbacks, comprehensive adjustment left and right side return air branch air duct control valve 3a and the total air channel of return air control valve 4a, thus make the temperature and humidity in the hothouse 1 satisfy technological requirement.The aperture of adjustment steam branch road one control valve 8-1a can be adjusted and get into the quantity of steam size that heat exchanger 6 carries out indirect heat exchange, and the aperture of adjustment steam branch road two control valve 8-2a can be adjusted the quantity of steam size in direct entering circulating fan 5 outlet air channels.The aperture of adjustment hydrofuge air channel control valve can be adjusted the hydrofuge amount.
More than be merely the preferable possible embodiments of the utility model, non-so the limitation the utility model scope of patent protection.Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (4)
1. SCR denitrating catalyst primary drying hot air circulating system; Comprise hothouse, heat exchanger and circulating fan; Said hothouse bottom is provided with the hot blast air channel; Said hot blast is evenly distributed with the hot blast air outlet on the air channel, and said hothouse top is provided with return airway, is evenly distributed with return air inlet on the said return airway; Said hot blast air channel links to each other with the outlet of said circulating fan; Said return airway links to each other with the suction inlet of said circulating fan; Said heat exchanger is positioned on the outlet air channel of said circulating fan; The steam inlet of said heat exchanger is connected with main steam pipe, it is characterized in that: the return airway of said hothouse comprises total air channel of return air and return air branch air duct, and the total air channel of said return air is positioned on the axis of said hothouse; Said return air branch air duct symmetry is connected the both sides in the total air channel of said return air and extends along hothouse fabric width direction, and the total air channel of said return air links to each other with the suction inlet of said circulating fan.
2. SCR denitrating catalyst primary drying hot air circulating system according to claim 1; It is characterized in that: the porch in the total air channel of said return air is equipped with the total air channel of return air control valve, and the middle part of each said return air branch air duct is separately installed with return air branch air duct control valve; The left, center, right portion of said hothouse fabric width direction is provided with humidity sensor respectively, and the middle part of said hothouse fabric width direction is provided with temperature sensor.
3. SCR denitrating catalyst primary drying hot air circulating system according to claim 1; It is characterized in that: said main steam pipe is connected with steam branch road one and steam branch road two; Said steam branch road one links to each other with the steam inlet of said heat exchanger, and said steam branch road two links to each other with the outlet air channel of said circulating fan; In the said main steam pipe main steam control valve is installed, steam branch road one control valve is installed in the said steam branch road one, steam branch road two control valves are installed in the said steam branch road two.
4. SCR denitrating catalyst primary drying hot air circulating system according to claim 1 is characterized in that: be connected with the hydrofuge air channel on the outlet air channel of said circulating fan, the porch in said hydrofuge air channel is equipped with hydrofuge air channel control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200870720U CN202485381U (en) | 2012-03-09 | 2012-03-09 | SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200870720U CN202485381U (en) | 2012-03-09 | 2012-03-09 | SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485381U true CN202485381U (en) | 2012-10-10 |
Family
ID=46959799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200870720U Expired - Lifetime CN202485381U (en) | 2012-03-09 | 2012-03-09 | SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202485381U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486841A (en) * | 2013-09-24 | 2014-01-01 | 无锡华光新动力环保科技股份有限公司 | Hot air circulation system for I-phase drying air distribution of SCR (selective catalytic reduction) denitrated catalyst |
| CN103743219A (en) * | 2013-12-24 | 2014-04-23 | 烨辉（中国）科技材料有限公司 | Hot air dryer system for drying steel plates |
| CN105865186A (en) * | 2016-05-19 | 2016-08-17 | 无锡华光新动力环保科技股份有限公司 | Hot air circulation drying system for SCR denitration catalysts |
| CN106017001A (en) * | 2016-07-14 | 2016-10-12 | 江苏龙净科杰催化剂再生有限公司 | Drying device special for honeycomb type selective catalytic reduction (SCR) denitration catalyst regeneration |
| CN106322976A (en) * | 2016-08-19 | 2017-01-11 | 安徽元琛环保科技股份有限公司 | Denitration catalyst secondary drying procedure hot air circulatig system |
| CN109442917A (en) * | 2018-12-14 | 2019-03-08 | 广东百维生物科技有限公司 | Fish scale dryer |
-
2012
- 2012-03-09 CN CN2012200870720U patent/CN202485381U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486841A (en) * | 2013-09-24 | 2014-01-01 | 无锡华光新动力环保科技股份有限公司 | Hot air circulation system for I-phase drying air distribution of SCR (selective catalytic reduction) denitrated catalyst |
| CN103486841B (en) * | 2013-09-24 | 2015-08-19 | 无锡华光新动力环保科技股份有限公司 | The hot air circulating system of the dry cloth wind of a kind of SCR denitration I section |
| CN103743219A (en) * | 2013-12-24 | 2014-04-23 | 烨辉（中国）科技材料有限公司 | Hot air dryer system for drying steel plates |
| CN105865186A (en) * | 2016-05-19 | 2016-08-17 | 无锡华光新动力环保科技股份有限公司 | Hot air circulation drying system for SCR denitration catalysts |
| CN106017001A (en) * | 2016-07-14 | 2016-10-12 | 江苏龙净科杰催化剂再生有限公司 | Drying device special for honeycomb type selective catalytic reduction (SCR) denitration catalyst regeneration |
| CN106322976A (en) * | 2016-08-19 | 2017-01-11 | 安徽元琛环保科技股份有限公司 | Denitration catalyst secondary drying procedure hot air circulatig system |
| CN109442917A (en) * | 2018-12-14 | 2019-03-08 | 广东百维生物科技有限公司 | Fish scale dryer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202485381U (en) | SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system | |
| CN103303878B (en) | Method for preparing sulfuric acid by iron pyrite | |
| CN102389691A (en) | Low dew point turning wheel dehumidification device | |
| CN203928615U (en) | A kind of heated-air circulation oven | |
| CN204529655U (en) | A kind of closed-loop control blower system of glass tempering unit | |
| CN101810981B (en) | Efficient low-resistance cross-flow type moving bed desulfurizing tower | |
| CN202485382U (en) | Single dry air pressure regulating device for SCR (Selective Catalytic Reduction) denitration catalyst | |
| CN102490938B (en) | Air feed and exhaust system for tunnel-type sterilizing dryer | |
| CN202168443U (en) | Multi-section-hot air self circulation medlar drying machine | |
| CN207042258U (en) | Selective catalytic reduction denitration device | |
| CN203797834U (en) | Dehumidifier with double turning wheels | |
| CN206240285U (en) | One kind compression waste heat zero regeneration gas loss absorption drier | |
| CN201926249U (en) | Belt type circulation drier | |
| CN202237713U (en) | Efficient cross flow type activated coke moving bed sintering flue gas purifying unit and purifying tower | |
| CN203443284U (en) | Drying device used for secondary drying of honeycomb catalysts | |
| CN206240191U (en) | A kind of air flow guiding panel structure | |
| CN209944886U (en) | Uniform air type drying box | |
| CN205066332U (en) | Energy -saving carbon material of construction drying and dehumidification device | |
| CN101402055B (en) | Ribbed catalyst structure | |
| CN102003869B (en) | Vertical double-cylinder drier | |
| CN204240789U (en) | The vertical reclaim equiment of a kind of SCR denitration | |
| CN105865186A (en) | Hot air circulation drying system for SCR denitration catalysts | |
| CN201572596U (en) | Cross flow type moving bed desulfurizing tower | |
| CN205747885U (en) | A kind of heat-wind circulate drying system of SCR denitration | |
| CN203100393U (en) | Rapid drying device for SCR denitration catalysts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |