Delivery Time:20 work days
Certification:ISO9001 : 2008
Production Description
Water film Desulphurization system (fast-assembling type) is the improvement of traditional granulite water film desulphurization dust collector, with outer lining steel plate, inter lining granite, and middle acid-resistant castable. 1-2 parts are separated transport to site after manufacturing, and assemble at site. It has the advantages of easy installation and short construction period, which is the idea product for boiler and furnace gas desulphurization treatment. Water film Desulphurization Dust Collector (fast-assembling type) is the improvement of traditional granulite water film desulphurization dust collector, with outer lining steel plate, inter lining granite, and middle acid-resistant castable. 1-2 parts are separated transport to site after manufacturing, and assemble at site. It has the advantages of easy installation and short construction period, which is the idea product for boiler and furnace gas desulphurization treatment.
Desulphurizer
Considering the origin of desulphurizer, desulfurization effect, operating cost and secondary pollution, NaOH is advised to be desulphurizer. Ammonia water can be adopted as well, however, after purifying; ammonia nitrogen waste water will cause secondary pollution so that post processing is very difficult.
|
1. Features of desulphurizer |
1.1 Low liquid gas ratio (1.0-1.5L/Nm3), high desulfurization efficiency |
| 1.2 Excellent solubility of sodium salt, difficult to precipitate and scale, preventing pipe clogging and operating normally. | |
| 1.3Low operating cost, adequate raw material | |
| 2. Technical Parameters of NaOH | 2.1 Particle Size: 125 mesh |
| 2.2 Pureness: 95% | |
| 3. Principle of desulfurization |
3.1 2NaOH+SO2←→Na2SO3+H2O (1) Na2SO3+SO2+ H2O←→2NaHSO3 (2) |
| 3.2 During this processing, there is no deposition generated because of sodium alkali absorption solution. | |
|
4. Statement |
4.1 The efficiency of desulfurization is based on coal sulfur content and the amounts of desulphurizer. |
| 4.2 When sulfur content is 0.8% to 1%, desulfurization efficiency can reach to 89% (There is monitoring data to prove.) |
Principle of Venturi Desulphurization Device Operation
Venturi desulphurization device contains shrinkage pipe, choke and diffuser pipe. It is designed to be rectangular to connect of the water - film desulphurization dust collector. Flue gas gradually accelerated entering into the shrinkage pipe. When the gas reaches the highest speed and the minimum pressure at the choke,it adsorbs the alkaline water sprayed. After fully mixed, the dust and sulfide in the flue gas are humidified and adsorbed to reach the purpose of removing part of dust and sulfide.
While the flue gas enters into the dust collector, alkaline water overflows from upper tower sink. It forms 5mm water film layer on the cylinder wall. The flue gas enters from bottom body with tangential velocity, which provides centrifugal force to make the gas rise and rotate along the wall inside the device. The flue gas gets in touch with water film of the cylinder body under the action of centrifugal force. While the dust is humidified by water film, sulfide reacts with alkaline droplets and flows into the circulation tank with the water from the bottom spillway hole. After purification, gas rises through the upper cylinder cone part and completes the purification process.
Characteristics
(1) Venturi atomizer is improved and optimized on the basis of venturi tube and retains all its advantages. The spray system is downstream inner spraying with even atomization and is made up of 316L material or its equivalents.
(2)The shell adopts carbon-steel structure outside with granite lining and vibrant castable in middle. Its inner face is very smooth, which can withstand high temperature of exhaust gas under 250℃. All has leaded up to the big reinforcement of the whole device and extend its working life at the same time.
(3)The sink is sintered by acid-base resistant, heat resistant ceramic materials. It adopts block overflow structure and the inner side of shell is smooth, thus reducing the water consumption.
(4)Simple installation. Each section is in general 1 to 2 meters and can be done in one day with hoisting on site, which reduces the construction period. There are concave and convex seams on each shell connection and when installed, furan resin clay shall be used to connect the seam to ensure no leakage of wind and water at the connection.
(5)The load rating of hoisting shall be taken into account during de
