Heat Resistant Flue Gas Desulfurization Systems Simple Installation

Production Description

Desulphurization Systems is mainly composed of main cylinder, vice cylinder, cylinder bridge, the overflow tank and water coil, spillway hole, slag hole, flue gas import and export, etc. It 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.

Principle of Operation

Venturi Desulphurization Device 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

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.

The load rating of hoisting shall be taken into account during device design and manufacturing. The hoisting device adopted by our factory has been through mechanical calculations and the hoisting hook is cut by lasers. The outer face of the hook is smooth without any burrs,which strengthen its visual beauty.

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.

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.

Preparations and Operation

Preparations

1.Fill full the circulating sink, the limestone slurry pool and soda slurry pool shall be filled adequate water, or high water level will bring about corrosion of circulating water pump), Start the limestone slurry pump and soda slurry pump to ensure the PH value of clean water sink fall between 9 and 12. Control the water level of sink to avoid water being extracted out completely.

2.Check whether the quality of joints between electric motor and water pipe valve is acceptable and water supply system works.

3.Check whether electric motor of stirrer can operate normally and storage of alkaline solution is enough.

4.Check whether sealing device of electric motor is good and shaft is lubricative enough.

5.Check whether outlet baffle of induced fan is open.

6.Check whether outlet of wet scrubber spray desulphurization tower is smooth

7.Open the valves of spray devices.

Operation

1. Firstly, please turn on pump, turn off the door of induced fan, reduce current. Then, open the door of the fan when the fan operates normally. At last, when there is water overflowing at the outlet of water spray tower, please turn on the induced fan.

2. When operating, please observe the operation of water supply system and ensure water supply even and normal.

3. When operating, it is not allowed that there is no water in cylinder. Please check whether the outlet of ash water is smooth regularly and observe the temperature of flue gas and resistance of system.

4. When operating, PH value of water in tank should be tested regularly, when PH value is less than 7, alkali matter should be added to ensure the PH value of circulating water.