CN206139009U - Antisweat type selective catalytic reduction denitrating tower - Google Patents
Antisweat type selective catalytic reduction denitrating tower Download PDFInfo
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- CN206139009U CN206139009U CN201620866557.8U CN201620866557U CN206139009U CN 206139009 U CN206139009 U CN 206139009U CN 201620866557 U CN201620866557 U CN 201620866557U CN 206139009 U CN206139009 U CN 206139009U
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Abstract
The utility model relates to an environmental protection exhaust -gas treatment equipment specifically is an antisweat type selective catalytic reduction denitrating tower, and it has the pylon, installs at least two -layer conversion zone on the pylon, is equipped with smoke inlet hood and advances the tobacco pipe in the top of top layer conversion zone, is equipped with out the petticoat pipe and goes out the tobacco pipe in the below of bottom conversion zone, all is equipped with the soot blower on the tower jar lateral wall of each conversion zone, is furnished with the air -supply line, characterized by: the whole cellular low temperature denitration catalyst of formula of extruding has been placed in the tower jar of each conversion zone to be furnished with valve A with being equipped with the exhaust pipe on smoke inlet hood, add on advancing the tobacco pipe and be equipped with valve B, be furnished with valve C with being equipped with the blowing pipe on a petticoat pipe, add on a tobacco pipe and be equipped with valve D, the utility model discloses solve current denitrating tower betterly and produced the dewfall easily, influenced overhaul of the equipments and life's problem, extensively be used for the processing of industrial boiler such as combustion power plant, chemical industry, iron and steel glass, kiln tail gas.
Description
Technical field
This utility model is related to environmentally friendly waste gas treatment equipment, specifically a kind of moisture condensation resistant selective catalytic reduction denitration
Tower.
Background technology
Based on the hazardness of oxides of nitrogen gas, the control discharge to nitrogen oxides masonry in industrial waste gas, is national Jing
Ji sustainable development and the objective requirement of environmental conservation.Also, the development of denitration industry has obtained national relevant policies regulation
Support energetically, the pollutant emission standard of various industries is further received sternly, to reach increasingly to the emission limit of nitrogen oxides
Strict discharge standard, is particularly the minimum discharge standard of some key areas, it is necessary to which waste gas is effectively treated.
Although in the Processing tecchnics to nitrogen oxides harmful gass, method is a lot, SCR
（Selective Catalytic Reduction, SCR）After method is become with its high efficiency, economy and technology maturation
Process the first-selected method of denitration, at present coal fired plant, chemical industry, iron and steel, etc. industry, obtain universal promotion and application.SCR device
The high-temperature high dust section being typically located between boiler economizer and air preheater, operating temperature are interval at 350-420 DEG C, here
Temperature range is operated, and can avoid substantially SO in flue gas2Catalyst is poisoned.Flue gas through SCR device process after, nitrogen oxidation
Thing concentration can be reduced to less than 300mg/m3Or lower≤200mg/m3Below.
At present, in enterprise, wide variety of SCR denitration equipment mainly includes pylon, is provided with least two-layer anti-on pylon
Layer is answered, is provided with above top layer conversion zone into petticoat pipe and smoke-intake pipe, petticoat pipe and smoke is housed out in the lower section of bottom conversion zone
Pipe, is equipped with soot blower on the tower pot sidewall of each conversion zone, is furnished with blast pipe, and this equipment is in maintenance down or other need
When shutting down work for a long time, condensation in conversion zone tower tank, is easily produced, affect service work and subsequent regeneration to produce, while also tight
The service life of equipment is have impact on again.
The content of the invention
The purpose of this utility model seeks to solve the problems, such as that existing denitrating tower easily condenses, there is provided a kind of moisture condensation resistant choosing
Selecting property catalytic reduction method denitrating tower.
Concrete scheme of the present utility model is：A kind of moisture condensation resistant selective catalytic reduction denitrating tower, with pylon, tower
At least two-layer conversion zone is installed on frame, is provided with above top layer conversion zone into petticoat pipe and smoke-intake pipe, in bottom conversion zone
Lower section is equipped with out petticoat pipe and pipe, is equipped with soot blower, is furnished with blast pipe on the tower pot sidewall of each conversion zone, its feature
It is：The cellular low-temperature denitration catalyst of integral extruding type is placed with the tower tank of each conversion zone, and is added on petticoat pipe is entered
It is furnished with valve A equipped with exhaust duct, valve B is added on smoke-intake pipe, is furnished with valve C going out blower on petticoat pipe,
Valve D is added on pipe.
In this utility model, blast pipe is going out petticoat pipe or is entering the coiling of petticoat pipe inwall, and reacted layer interior axle is up and down back and forth simultaneously
It is also turned on each soot blower after installing around by tower top tank structure again.
The integral extruding type honeycomb that prioritizing selection is produced by Dalian Chemiclophysics Inst., Chinese Academy of Sciences in this utility model
Shape low-temperature denitration catalyst, and this utility model has also especially installed blower and exhaust duct additional, for maintenance or other need compared with
When long-time shuts down work, anti-condensation process is carried out, its principle is：After a shutdown, valve B and valve D is closed, while valve A
Open with valve C, low temperature natural air is entered from blower；A period of time is exhausted in the High Temperature High Pressure section of conversion zone, is made
When in tower, temperature is reached as outdoor temperature, then Close All valve；Due to pressure and temperature with reach outside tower it is consistent after,
Vapor dew point is reduced, so as to prevent steam to separate out, it is ensured that do not affected by aqueous vapor in tower, it is ensured that denitrating tower normal work.
This utility model design is ingenious, adapts to process less than 250 DEG C of low-temperature flue gas, and the tail gas after process is fully achieved
Discharging standards.Using built-in blast pipe, energy saving, reduce investment outlay, without the need for matching somebody with somebody outward heating system；Employ anti-condensation row
Gas system, it is ensured that do not affected by aqueous vapor in tower, it is ensured that the normal work in denitrating tower later stage, improves the service life of equipment.
Description of the drawings
Fig. 1 is general structure schematic diagram of the present utility model.
In figure：1- smoke-intake pipes, 2- enter petticoat pipe, 3- pylons, 4- valve B, the first conversion zones of 5-, and 6- catalyst, 7- second are anti-
Answer layer, 8- blast pipes, the 3rd conversion zones of 9-, 10- go out petticoat pipe, 11- pipes, 12- soot blowers, 13- valve C, 14- exhaust ducts,
15- valve A, 16- blowers, 17- valve D.
Specific embodiment
Referring to Fig. 1, this utility model has pylon 3, is provided with three-layer reaction layer 5,7,9, in the first conversion zone on pylon 3
5 top is provided with into petticoat pipe 2 and smoke-intake pipe 1, petticoat pipe 10 and pipe 11 is housed out in the lower section of the 3rd conversion zone 9, each
Soot blower 12 is equipped with the tower pot sidewall of conversion zone, is furnished with blast pipe 8, the blast pipe 8 be introduce from pipe 11 and
Go out in petticoat pipe 10 and each layer conversion zone each soot blower 12 is also turned on after coiling heating（Can also be from smoke-intake pipe 1 introduce and
Enter in petticoat pipe 2 and each layer conversion zone each soot blower 12 is also turned on after coiling heating）, particularly：In the tower tank of each conversion zone
In to be placed with the cellular low-temperature denitration catalyst of integral extruding type 6 (be to be given birth to by Dalian Chemiclophysics Inst., Chinese Academy of Sciences's invention
Produce), and exhaust duct 14 is added on petticoat pipe 2 is entered be furnished with valve A15, valve B4 is added on smoke-intake pipe 1, is going out petticoat pipe
Blower 16 is added on 10 and is furnished with valve C13, valve D17 is added on pipe 11.
In the present embodiment, after the coiling of 10 inwall of petticoat pipe is gone out, reacted layer interior axle is up and down back and forth simultaneously for preferred blast pipe 8
It is also turned on each soot blower 12 after installing around by tower top tank structure again.
This utility model designs two-layer conversion zone or more according to said structure principle according to treatment quantity and requirement
Reaction Rotating fields.
Claims (1)
1. a kind of moisture condensation resistant selective catalytic reduction denitrating tower, with pylon, is provided with least two-layer conversion zone on pylon,
It is provided with above top layer conversion zone into petticoat pipe and smoke-intake pipe, petticoat pipe and pipe is housed out in the lower section of bottom conversion zone,
Soot blower is equipped with the tower pot sidewall of each conversion zone, is furnished with blast pipe, be it is characterized in that：Put in the tower tank of each conversion zone
The cellular low-temperature denitration catalyst of integral extruding type is equipped with, and exhaust duct is added on petticoat pipe is entered and be furnished with valve A, entering cigarette
Valve B is added on pipe, is furnished with valve C going out blower on petticoat pipe, valve D is added on pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620866557.8U CN206139009U (en) | 2016-08-11 | 2016-08-11 | Antisweat type selective catalytic reduction denitrating tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620866557.8U CN206139009U (en) | 2016-08-11 | 2016-08-11 | Antisweat type selective catalytic reduction denitrating tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206139009U true CN206139009U (en) | 2017-05-03 |
Family
ID=58628122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620866557.8U Active CN206139009U (en) | 2016-08-11 | 2016-08-11 | Antisweat type selective catalytic reduction denitrating tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206139009U (en) |
-
2016
- 2016-08-11 CN CN201620866557.8U patent/CN206139009U/en active Active
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