CN202485382U - Single dry air pressure regulating device for SCR (Selective Catalytic Reduction) denitration catalyst - Google Patents
Single dry air pressure regulating device for SCR (Selective Catalytic Reduction) denitration catalyst Download PDFInfo
- Publication number
- CN202485382U CN202485382U CN2012200871009U CN201220087100U CN202485382U CN 202485382 U CN202485382 U CN 202485382U CN 2012200871009 U CN2012200871009 U CN 2012200871009U CN 201220087100 U CN201220087100 U CN 201220087100U CN 202485382 U CN202485382 U CN 202485382U
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- China
- Prior art keywords
- air channel
- circulating fan
- hot blast
- hothouse
- drying chamber
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Abstract
The uitliyt model relates to a single dry air pressure regulating device for an SCR (Selective Catalytic Reduction) denitration catalyst. The single dry air pressure regulating device comprises a drying chamber, a heat exchanger and a circulating fan, wherein the lower part of the drying chamber is provided with a hot blast air channel; hot blast outlets are uniformly distributed on the hot blast air channel; the upper part of the drying chamber is provided with a return air channel; the hot blast air channel is connected with an outlet of the circulating fan; the return air channel is connected with a suction port of the circulating fan; the heat exchanger is located on an outlet air channel of the circulating fan; a steam inlet of the heat exchanger is connected with a main steam pipe; a dehumidifying air channel is further connected to the outlet air channel of the circulating fan; a fresh air channel is connected to a suction port air channel of the circulating fan through a tee joint; a fresh air channel regulating valve is mounted at an inlet of the fresh air channel; and a pressure sensor for sensing an air pressure in the drying chamber is mounted in an inner cavity of the drying chamber. By controlling the opening degree of the fresh air channel regulating valve, the entering amount of cold air can be controlled, air leakage caused by too much negative pressure in the drying chamber is avoided, so that the temperature and the humidity in the drying chamber are more uniform.
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 barometric control unit.
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 barometric control unit 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; Return airway links to each other with the suction inlet of circulating fan; 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, also is connected with the hydrofuge air channel on the outlet air channel of circulating fan.The weak point of this device is: behind the hydrofuge, occur negative pressure in the hothouse, the existence of negative pressure will cause hothouse to leak out, and be in disordered state because of leaking out, and temperature and humidity is inhomogeneous in the hothouse that will cause, and cause the dry products cracking.
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 barometric control unit 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 barometric control unit 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, and the steam inlet of said heat exchanger is connected with main steam pipe, also is connected with the hydrofuge air channel on the outlet air channel of said circulating fan; Be connected with new wind air channel through threeway on the suction inlet air channel of said circulating fan, the porch in said new wind air channel is equipped with new wind air channel control valve.
With respect to prior art; The utility model has been obtained following beneficial effect: be connected with new wind air channel through threeway on the suction inlet air channel of circulating fan, through controlling the aperture of new wind air channel control valve, can control the inlet of cold wind; And then controlled the negative pressure in the hothouse; Avoid hothouse internal cause negative pressure excessive and leak out, make that the temperature and humidity in the hothouse is more even, satisfy the requirement of drying process.
As the preferred version of the utility model, said hothouse inner chamber is equipped with the pressure sensor of surveying the hothouse internal gas pressure.Pressure sensor in time offers the control system with the pressure in the hothouse, and the control system can adjust the aperture of new wind air channel control valve, keeps dry indoor air pressure in the reasonable scope.
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 barometric control unit.
Among the figure: 1. hothouse; 2. hot blast air channel; 3. return air branch air duct; 3a. return air branch air duct control valve; 4. the total air channel of return air; 4a. the total air channel of 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; 11. new wind air channel; 11a. new wind air channel control valve; 12. pressure sensor.
The specific embodiment
As shown in Figure 1, the SCR denitrating catalyst primary drying barometric control unit 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.
Be connected with hydrofuge air channel 7 on the outlet air channel of circulating fan 5, the porch in hydrofuge air channel 7 is equipped with hydrofuge air channel control valve 7a.Be connected with new wind air channel 11 through threeway on the suction inlet air channel of circulating fan 5, the porch in new wind air channel 11 is equipped with new wind air channel control valve 11a.
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 equipped with temperature sensor 10 and pressure sensor 12.
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.
Pressure parameter according to pressure sensor 12 feedbacks; Regulate the aperture of new wind air channel control valve 11a, can control the inlet of cold wind, and then controlled the negative pressure in the hothouse; Avoid hothouse internal cause negative pressure excessive and leak out, make that the temperature and humidity in the hothouse is more even.
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 (2)
1. SCR denitrating catalyst primary drying barometric control unit; 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, and the steam inlet of said heat exchanger is connected with main steam pipe, also is connected with the hydrofuge air channel on the outlet air channel of said circulating fan; It is characterized in that: be connected with new wind air channel through threeway on the suction inlet air channel of said circulating fan, the porch in said new wind air channel is equipped with new wind air channel control valve.
2. SCR denitrating catalyst primary drying barometric control unit according to claim 1 is characterized in that: said hothouse inner chamber is equipped with the pressure sensor of surveying the hothouse internal gas pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200871009U CN202485382U (en) | 2012-03-09 | 2012-03-09 | Single dry air pressure regulating device for SCR (Selective Catalytic Reduction) denitration catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200871009U CN202485382U (en) | 2012-03-09 | 2012-03-09 | Single dry air pressure regulating device for SCR (Selective Catalytic Reduction) denitration catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485382U true CN202485382U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200871009U Expired - Lifetime CN202485382U (en) | 2012-03-09 | 2012-03-09 | Single dry air pressure regulating device for SCR (Selective Catalytic Reduction) denitration catalyst |
Country Status (1)
| Country | Link |
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| CN (1) | CN202485382U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388962A (en) * | 2013-08-15 | 2013-11-13 | 蚌埠玻璃工业设计研究院 | Drying device of refractory material brick |
| CN110006225A (en) * | 2019-04-02 | 2019-07-12 | 中山市爱美泰电器有限公司 | A kind of agricultural and sideline product drying system based on heat pump techniques |
-
2012
- 2012-03-09 CN CN2012200871009U patent/CN202485382U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388962A (en) * | 2013-08-15 | 2013-11-13 | 蚌埠玻璃工业设计研究院 | Drying device of refractory material brick |
| CN103388962B (en) * | 2013-08-15 | 2015-09-30 | 蚌埠玻璃工业设计研究院 | A kind of drying device of fire proof material brick |
| CN110006225A (en) * | 2019-04-02 | 2019-07-12 | 中山市爱美泰电器有限公司 | A kind of agricultural and sideline product drying system based on heat pump techniques |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |