Type:
Off-gas collecting and environmental protection system
Application:
Applied in lead plant for smelting furnace off-gas control
The off gas treatment equipment mainly includes water spraying cooling tower, surface cooler, bag-type dust collector, absorption/desulfurizing tower, dust collection fan and gas pipelines.
The high-temperature smoke will enter water spraying tower through pipeline, through which the temperature of smoke will be lower to 500℃. Then the smoke from cooling tower enters 360m2 surface cooler with its temperature lower to ≤200℃. And then the smoke goes into bag-type dust collector. If the environmental requirement standard is high, we can use absorption tower or pneumatic emulsion tower to press the smoke for desulfurization by induced draft fan. At last, the smoke filtered will be discharged from chimney by dust collection fan.
1.Bag collector specification
|
No. |
Name |
Model |
Qty |
|
1 |
Dust collector |
400m2 |
1 |
|
2 |
FMS filter bag |
φ130×6000 |
165 |
|
3 |
Organosilicone bag cage |
φ125×5980 |
165 |
|
4 |
EMP |
3″submerge |
15 |
|
5 |
Pulse-jet device |
Assembly |
15 |
|
6 |
Disc lift valve |
DN550 |
3 |
|
7 |
Airflow distributor |
Φ315*1640 |
3 |
|
8 |
Air storage tank |
1.0m3 |
1 |
|
9 |
Hopper wall vibrator |
ZF-25 |
2 |
|
10 |
Control system |
Siemens PLC-100 |
1 |
|
11 |
Star-shape dust valve |
YJD-16C |
2 |
|
12 |
Cable and bridge |
For dust collector with 15m |
1 |
|
13 |
Cooler |
|
1 |
|
14 |
Star-shape dust valve |
YJD-16C |
1 |
|
15 |
Dust valve control system |
|
1 |
|
16 |
Dust collecting fan |
4-68-8C, 30kw |
1 |
2. Surface cooler specification
Surface cooler consist of stand column, box, ash bucket, heat dissipation pipeline, air inlet, air outlet, and so on. The high-temperature smoke enters the cooler box through the air inlet. The box also functions as a gravity settling chamber. The big particle dust will fall down into ash bucket due to gravity and be collected and discharged by a unloader. The high-temperature smoke will have heat exchange with air in the heat dissipation pipeline and then be discharged from the air outlet.
|
No. |
Name |
Model |
Qty |
|
1 |
Surface cooler body |
360m2, Q235B |
1 |
|
2 |
Star-shape dust valve |
YJD-16C |
3 |
|
3 |
Dust valve operation cabinet |
BL9.0 |
1 |
3. Water spraying cooling tower specification
Water spraying cooling tower consists of stand column, shell, ash bucket, cold water pipeline, air inlet, air outlet, and so on. High-temperature smoke will enter the cooler shell. The shell also functions as a gravity settling chamber. The big particle dust will fall down into ash bucket due to gravity and be collected and discharged by a unloader. The high-temperature smoke will have heat exchange with the cold water pipeline in the shell. The circulation water in the pipeline will bring away part of heat. And then the smoke will be discharged from the air outlet of the water cooling tower.
|
No. |
Name |
Model |
Qty |
|
1 |
Cooler main body |
50m2, Q235 |
1 |
|
2 |
Star-shaped dust valve |
YJD-16C |
1 |
|
3 |
Dust valve operation cabinet |
BL9.0 |
1 |
4. Pneumatic emulsion tower specification
Pneumatic emulsion tower consists of three parts, flue gas containing sulfur will first go into the gas uniformization chamber, and then into the filter element group of pneumatic emulsion, and finally through the gas-liquid separation chamber. The purified flue gas will come out of the tower and be discharged into the atmosphere. The filter element group of pneumatic emulsion is the core of the filter, which provides a pneumatic lime emulsion layer for strong mass transfer of turbulent mixing and is the main component of the flue gas purification. The structure of the pneumatic emulsion filter element, airflow velocity and liquid distribution amount have a direct impact on the efficiency of flue gas purification. The gas-liquid separation chamber is used for separating gas from liquid, which adopts the principle of coagulation and inertia and has simple structure as well as can further remove dust.
|
Item |
Item Name |
Model/Specification(Qty) |
Qty |
|
|
I |
Equipment List |
|||
|
1 |
Desulfurizing tower |
YH1100-2A Tower body of PP material, The amount of flue gas treatment is 25000m3 / h, with two annular sprayer |
2 set |
|
|
2 |
Supporting bracket and steel platform of desulfurization tower |
Carbon steel + corrosion resistance |
2 set |
|
|
3 |
Demister |
3-layer plate+1 lay tube demister |
1 set |
|
|
4 |
Air blower for oxidation |
Q=1000m3/h，P=40000pa，22KW |
1 set |
|
|
5 |
Circulating pump 1 |
100UHB-ZK-100-25/18.5KW-2 |
4 set |
|
|
6 |
Circulating pump 2 |
65UHB-ZK-50-25/5.5KW-2 |
4 set |
|
|
7 |
Circulating pool mixer |
54rpm,N=4Kw |
2 set |
|
|
8 |
Oxidation pond mixer |
54rpm,N=4Kw |
1 set |
|
|
9 |
Circulating pool |
φ3000×3000，made of concrete |
1 pc |
|
|
10 |
Oxidation pond |
φ3000×3001，made of concrete |
1 pc |
|
|
11 |
Slurrying pool mixer |
54rpm,N=3Kw |
1 set |
|
|
12 |
Slurrying pool |
φ3000×2000, made of concrete |
1 pc |
|
|
13 |
Slurry feeding pump |
32YU-1A-5-9/1.5KW-2 |
2 pc |
|
|
14 |
Filter press |
Filtering area of 100m2 |
1 set |
|
|
15 |
Filter pump |
65UHB-ZK-B-10-50/7.5KW-2 |
1 pc |
|
|
16 |
Wet electric precipitator |
|
1 set |
|
|
II |
Process part list |
|||
|
1 |
Desulfurizing tower inlet flue gas pipes |
DN800，Carbon steel |
0m |
|
|
2 |
Inlet cooling system |
2205stainless steel，DN800*3000 |
1 set |
|
|
3 |
Desulfurizing tower connecting pipes |
DN800，PP |
20m |
|
|
4 |
Desulfurizing tower outlet flue gas pipes |
DN800，PP |
20m |
|
|
5 |
Circulating slurry pipes |
PPR，DN100 |
150m |
|
|
6 |
Pipe fittings |
Valves, bends and rubber joint |
1 batch |
|
|
7 |
Flue gas pipe support |
Flue gas platform and pipe support |
2 ton |
|
|
III |
Electric part list |
|||
|
1 |
Low-voltage inlet wire cabinet |
GGD2 |
1 pc |
|
|
2 |
Low-voltage power distribution cabinet |
GGD2 |
2 pcs |
|
|
3 |
Cables |
|
1 set |
|
|
4 |
Installation materials |
FRP bridge |
1 set |
|
|
IV |
Instrument&meter list |
|||
|
1 |
PLC control system. |
PLC+ touch panel |
1 set |
|
|
2 |
Solenoid valve |
DN40，stainless steel PN1.0 |
4 set |
|
|
3 |
PH meter |
|
1 set |
|
|
4 |
Diaphragm pressure-proof pressure gauge |
Diaphragm：316L DN25 PN1.0 |
3 pcs |
|
|
5 |
Instrument cables |
ZR-KVV |
0.1km |
|
|
6 |
Installation materials |
Bridge and galvanized pipe |
1 set |
|
|
7 |
External screw stop valve |
J23W-16P DN10 SUS304 |
3 pcs |
|
|
8 |
Ball valve with fluorine lining |
Q41F-10F DN25 CS fluorine-lined |
3 set |
|
Add:25F, B-4, Guanming Business Center, No. 798 Zhongyi Rd, Yuhua, Changsha, Hunan, China
Tel:86 0731 65152558
Mobile:86 173 0849 3887
Whats/Wechat：173 0849 3887
Email：[email protected]
Add：No.3 Puxinhu Center 4 Rd, Tangxia, Dongguan, Guangdong, China
Tel：86 0769 86959488
Fax：86 0769 86959398
Mobile：173 0849 3887 (Whatsapp/Wechat)
Email：[email protected]
