CN202506304U - SCR (selective catalytic reduction) denitration device - Google Patents
SCR (selective catalytic reduction) denitration device Download PDFInfo
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- CN202506304U CN202506304U CN2012201128704U CN201220112870U CN202506304U CN 202506304 U CN202506304 U CN 202506304U CN 2012201128704 U CN2012201128704 U CN 2012201128704U CN 201220112870 U CN201220112870 U CN 201220112870U CN 202506304 U CN202506304 U CN 202506304U
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- ammonia
- scr
- tank
- denitrification apparatus
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Abstract
The utility model discloses a SCR (selective catalytic reduction) denitration device, which is composed of the following successively connected parts: a liquid ammonia unloading compressor (1), a liquid ammonia stock tank (2), a liquid ammonia evaporator tank (3), an ammonia buffer tank (4), an ammonia/air mixer (6) and a SCR reactor (8), wherein the ammonia/air mixer (6) is connected with a blower (7), the liquid ammonia stock tank (2) and the ammonia buffer tank (4) are both connected with an ammonia absorption trough (5), and the ammonia absorption trough (5) is connected with a pool (9). The denitration device adopts the liquid ammonia as a reducer, has the advantages of simple structure and low dissipation of energy, the liquid ammonia stock tank and the ammonia buffer tank are both connected with the ammonia absorption trough, the gas is discharged after the alkaline is absorbed, thus the production safety is ensured; the denitration effect is good, that the device is environment-friendly.
Description
Technical field
The utility model relates to a kind of equipment for denitrifying flue gas, particularly a kind of SCR (selective catalytic reduction) equipment for denitrifying flue gas.
Background technology
SCR (selective catalytic reduction) utilizes ammonia (NH3) to the NOx restoring function, under 320～400 ℃ condition, utilizes catalyst action NOx to be reduced to N2 and the water that atmosphere is not had influence.The meaning of " selectivity " is meant that ammonia selectively carries out reduction reaction, only selects the NOx reduction here.
Present SCR denitrification apparatus is not generally installed the ammonia absorption amchine structure to liquid ammonia storage tank and ammonia surge tank, makes ammonia directly discharge, and has potential safety hazard; Also have the mixed effect of ammonia/air mixer uneven, cause gaseous mixture denitration effect in the SCR reactor relatively poor, finally cause environmental pollution.
The utility model content
The purpose of the utility model is, a kind of SCR denitrification apparatus is provided.The utlity model has production safety, denitration effect is good and the protection environment characteristics.
The technical scheme of the utility model: a kind of SCR denitrification apparatus; It is characterized in that: comprise the liquefied ammonia discharging compressor, liquid ammonia storage tank, liquefied ammonia evaporator tank, ammonia dashpot, ammonia/air mixer and the SCR reactor that connect successively; Ammonia/air mixer is connected with air blast; Described liquid ammonia storage tank all is connected with the ammonia absorption cell with the ammonia dashpot, and the ammonia absorption cell is connected with the pond.
In the aforesaid SCR denitrification apparatus, be provided with water pump in the described pond.
In the aforesaid SCR denitrification apparatus, described ammonia/air mixer comprises the blender body, and the blender body is provided with the air intake and the mixed gas outlet that is connected the SCR reactor that connects air blast, is provided with tilt clapboard arranged in a crossed manner up and down in the blender body.
In the aforesaid SCR denitrification apparatus, the angle of inclination of described tilt clapboard is 70 °～80 °.
In the aforesaid SCR denitrification apparatus, the angle of inclination of described tilt clapboard is 75 °.
Compared with prior art, the utility model is through adopting liquefied ammonia as reducing agent, and is simple in structure; Energy consumption is lower, and liquid ammonia storage tank all is connected with the ammonia absorption cell that has the pond with the ammonia dashpot, through discharging behind the Chi Shui absorption ammonia; Can guarantee production safety, adopt the dividing plate of special angle in addition, make and in ammonia/air mixer, to mix fully with air through pressure and the adjusted ammonia of flow; Denitration effect is better, can effectively protect environment.The utility model also has the characteristics simple in structure and easy to use of implementing.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of ammonia/air mixer.
Being labeled as in the accompanying drawing: 1-liquefied ammonia discharging compressor, 2-liquid ammonia storage tank, 3-liquefied ammonia evaporator tank, 4-ammonia dashpot; 5-ammonia absorption cell, 6-ammonia/air mixer, 7-air blast, 8-SCR reactor; The 9-pond, 10-safety valve, 11-air intake; 12-blender body, 13-tilt clapboard, 14-mixed gas outlet.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.A kind of SCR denitrification apparatus; Constitute as illustrated in fig. 1 and 2; Comprise the liquefied ammonia discharging compressor 1, liquid ammonia storage tank 2, liquefied ammonia evaporator tank 3, ammonia dashpot 4, ammonia/air mixer 6 and the SCR reactor 8 that connect successively; Ammonia/air mixer 6 is connected with air blast 7, and described liquid ammonia storage tank 2 all is connected with ammonia absorption cell 5 with ammonia dashpot 4, and ammonia absorption cell 5 is connected with pond 9.Be provided with water pump 10 in the described pond 9, enter in the wastewater disposal basin through water pump 10.
Described ammonia/air mixer 6 comprises blender body 12, and blender body 12 is provided with the air intake 11 and the mixed gas outlet that is connected SCR reactor 8 14 that connects air blast 7, is provided with tilt clapboard 13 arranged in a crossed manner up and down in the blender body 12.
The angle of inclination of described tilt clapboard 13 is 70 °～80 ° (reasonable is to adopt 75 °).
The operation principle of the utility model is following: the supply of liquefied ammonia is transported by liquefied ammonia tank vehicle; Utilize liquefied ammonia discharging compressor 1 that liquefied ammonia is imported in the liquid ammonia storage tank 2 by tank car; The liquefied ammonia of liquid ammonia storage tank 2 outputs is evaporated to ammonia in liquefied ammonia evaporator tank 3; Carry the air that provides with air blast 7 in ammonia/air mixer 6, to spray into SCR reactor 8 after the diluted mixture through ammonia surge tank 4, under the effect of catalyst, remove nitrogen oxide.Liquid ammonia storage tank 2 then can enter in the ammonia dilution trap 5 with the ammonia of ammonia dashpot 4 dischargings, enters wastewater disposal basin again through the absorption of water, can effectively guarantee safety in production.This novel practical type adopts liquefied ammonia as reducing agent, and system is simple, and energy consumption is low; Ammonia/air mixer adopts special structure design, in establish dividing plate, angle becomes 75 °; Make and in blender, to mix fully with air that denitration effect is better through pressure and the adjusted ammonia of flow.
Claims (5)
1. SCR denitrification apparatus; It is characterized in that: comprise the liquefied ammonia discharging compressor (1), liquid ammonia storage tank (2), liquefied ammonia evaporator tank (3), ammonia dashpot (4), ammonia/air mixer (6) and the SCR reactor (8) that connect successively; Ammonia/air mixer (6) is connected with air blast (7); Described liquid ammonia storage tank (2) all is connected with ammonia absorption cell (5) with ammonia dashpot (4), and ammonia absorption cell (5) is connected with pond (9).
2. SCR denitrification apparatus according to claim 1 is characterized in that: be provided with water pump (10) in described pond (9).
3. SCR denitrification apparatus according to claim 1; It is characterized in that: described ammonia/air mixer (6) comprises blender body (12); Blender body (12) is provided with the air intake (11) and the mixed gas outlet that is connected SCR reactor (8) (14) that connects air blast (7), is provided with tilt clapboard (13) arranged in a crossed manner up and down in the blender body (12).
4. SCR denitrification apparatus according to claim 3 is characterized in that: the angle of inclination of described tilt clapboard (13) is 70 °～80 °.
5. SCR denitrification apparatus according to claim 4 is characterized in that: the angle of inclination of described tilt clapboard (13) is 75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201128704U CN202506304U (en) | 2012-03-23 | 2012-03-23 | SCR (selective catalytic reduction) denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201128704U CN202506304U (en) | 2012-03-23 | 2012-03-23 | SCR (selective catalytic reduction) denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202506304U true CN202506304U (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201128704U Expired - Lifetime CN202506304U (en) | 2012-03-23 | 2012-03-23 | SCR (selective catalytic reduction) denitration device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202506304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028300A (en) * | 2012-11-23 | 2013-04-10 | 广东依科电力技术有限公司 | Fume cleaning and desulfurizing system and working method thereof |
-
2012
- 2012-03-23 CN CN2012201128704U patent/CN202506304U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028300A (en) * | 2012-11-23 | 2013-04-10 | 广东依科电力技术有限公司 | Fume cleaning and desulfurizing system and working method thereof |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |