SCR Denitration Technology Introduction
Selective catalytic reduction technology SCR is injecting reducing
agent into the flue gas. Under a certain temperature conditions,
reduction reaction occurs between reducing agent and NOx in flue
gas with catalysis of metal catalyst. Finally, pollution-free N2
and H2O are produced, and reducing agent is mainly composed of NH3
Oxidation Method Basic Denitration Principle
The main components of nitrogen oxides in the flue gas are NO and
NO2, and there are significant differences between NO and NO2. NO2 has characteristic of high solubility in water. After dissolution,
generated nitric acid and nitrous acid can take chemical reactions
with common desulphurization absorbent (such as CaO, Na2CO3 and so on). NO does not only has minimal solubility in water, but
also has no reaction with common alkaline absorbent. Therefore, NO
can be oxidized to NO2 and higher oxides through oxidation technology, and then be
absorbed by absorbent.
H2O2 Oxidation denitration system includes storage system, conveyor
system, distribution systems, injection reaction system, compressed
air system, electrical and control system.
|NO.||Model Item||Main Equipment||Technical Specifications||Quantity||Function|
|1||Discharging & Storage Tank||Storage Tank|
|Bucket Pump||H=7m;Q=6m3/h;N=0.55Kw||1||Medicament charging|
|2||Conveyor Model||Transfer Pump||H=65m;Q=1m3/h;N=0.55Kw||1||Pressure Medicament|
|Pneumatic Valve||1||Automatic Control|
|3||Distribution Model||Distributor||1||Delivery Measuring|
|4||Injection Model||Fast-inserted spray gun||4||Atomization|
|5||Compressed Air Model||Air Compressors||P=0.8MPa;Q=1.5m3/min;N=15Kw||1||Producing Compressed Air|
|Air Storage Tank||V=1.5m3||1||Buffering|
|6||Control ControCabinet||1||Power Distribution, Control|
Precautions before Centrifugal Pumps Operation
Please pay more attention to the pressure gauge, ammeter reading.
Once abnormal situation occurs, the problems should be figured out
and solved timely.
Standard lubricants should be often observed to ensure the amount
of oil is within a predetermined range. Check the oil quality
regularly, and once the change is found, it should be replaced
immediately as required grades.
Frequently observed lubricants and oil seal condition. Abnormal
situation should be corrected in time.
Regular check fastening bolt condition of centrifugal pump and
motor, temperature of pump, pump shaft and the pump running sound.
Centrifugal pump with complex structure and high degree of
automation must be operated, maintained and stopped in accordance
with relevant rules.
If denitration system does not operate for a long time, please
empty hydrogen peroxide in pipes and tanks as much as possible.
Hydrogen peroxide will naturally slow decompose into oxygen and
water , which will reduce the pesticide performance. The gas after
decomposition is also easy to accumulate in the pipes and pump
body, which makes it difficult for pump to start sucking directly.
It also easily leads to pump cavitation. Therefore, discharging gas
in pump is necessary.
Why Us ?
1 . Haina has 20-year experience on Flue Gas Treatment Solutions
that widely used in various industries
2 . Large stock of devices and big-scale assembly line to satisfy
any urgent orders from customers .
3 . Talented technical team to solve any difficult gas treatment
proposes and special orders .
4 . Exported all over the world with rich experience on