CN2228183Y

CN2228183Y - Boiler smoke airflow spray drying desulphurizing device

Info

Publication number: CN2228183Y
Application number: CN 95213425
Authority: CN
Inventors: 邱富荣; 吴安; 张文霖; 张玉桂; 陈冰冰
Original assignee: Five State Engineering Design And Research Institute; No5 Designing Inst Of Chinese Weapons Industry
Current assignee: Five State Engineering Design And Research Institute; No5 Designing Inst Of Chinese Weapons Industry
Priority date: 1995-06-16
Filing date: 1995-06-16
Publication date: 1996-05-29
Anticipated expiration: 2005-06-16

Abstract

The utility model relates to the spray-drying desulphurizing device of smoke airflow for a boiler. Two or four or six two-fluid sprayers are arranged in the cover part of the desulfurizing tower top of spray drying. A central emulsion pipe, a compressed air pipe, and a sprayer are arranged on the two-fluid sprayer. Compressed air is sprayed in a high speed from the spray nozzle of the sprayer. The high speed airflow is contacted with emulsion. Thus, the emulsion is crushed into fine mist. A spray process is completed. A fume inlet is arranged in the upper part of a tower. A fume outlet is arranged in the lower part of the tower. The utility model has the advantages of easy manufacture and low manufacture cost. Rotation parts with a high speed does not exist. A manufacture task can be accomplished in an ordinary mechanical processing plant. The diameter of the spray-drying tower can be reduced. Thus, an occupation area can be saved.

Description

The dry desulfurizer of boiler exhaust gas air-stream spraying

The utility model relates to a kind of Air Pollution Control device, the dry desulfurizer of particularly a kind of boiler exhaust gas air-stream spraying.

Abroad, researched and developed rotary spray dry desulfurization device as states such as the U.S., Denmark, ten thousand rev/mins of rotating sprayer rotating speed 1-2, high speed rotating plate is atomized into the droplet of 60-70 micron to lime slurry, sprays into the spray dry desulfurization tower then and removes sulfur dioxide with the flue gas hybrid reaction that enters desulfurizing tower; Rotary sprayer rotating speed height, processing and manufacturing required precision height, the maintenance and installation technical sophistication, cost is expensive, and spreading of spray is big, makes with its supporting spray dry desulfurization tower diameter big.

The purpose of this utility model is: design a kind of novel spray dry desulfurization device, make it simple in structure, take up an area of little, the desulfurizer that cost is low.

This novel employing such as lower device are realized above-mentioned purpose, design the dry desulfurizer of a kind of air-stream spraying, at spray dry desulfurization

cat head cap

2 or 4 or 6 two-fluid sprayers are installed, its number is decided on handling cigarette amount size, high-order emulsion groove is equipped with at the top of tower, high-order emulsion troughed belt agitator, have the emulsion inflow pipe on the high-order emulsion groove, center latex vessel and compressed air hose and spray nozzle are arranged on the two-fluid sprayer, compressed air enters compressed air hose by the compressed air inlet and enters sprayer again, on the sprayer basis spray nozzle is arranged, the center latex vessel equates with emulsion inflow pipe quantity and communicates, satisfy pressure simultaneously greater than 0.3MPa, absorb emulsion and flow to nozzle by the center latex vessel, compressed air is sprayed at a high speed by the atomizer spray mouth, after compressed air enters sprayer, because pressure is higher than atmospheric pressure, must expand rapidly downwards by spray nozzle and produce high speed jet stream, the center latex vessel is that the emulsion in the head tank is passed near the nozzle, flow out by the emulsion mouth, be ground into mist with the high-speed air flow contact, finish spray process; Smoke inlet is established on tower top, and exhanst gas outlet is established in the bottom, and ash discharging hole; Sprayer and air-stream spraying desulfurizing tower adopt carbon steel material,

Adopt the dry desulfurizer of this boiler exhaust gas air-stream spraying, its overdraught sprayer processing and manufacturing is simple, low cost of manufacture does not have high-speed rotating component, and manufacturing operation can be finished in the general machining field, because the gas stream atomizer spreading of spray is littler than rotation spray zero device spreading of spray, a plurality of gas stream atomizers can dwindle the diameter of spray drying tower, save floor space, owing to can be housed, be convenient to regulate spray amount, the fogging degree of gas stream atomizer is better than rotary sprayer.

Illustrate below in conjunction with example:

Fig. 1. be the dry desulfurizing tower of air-stream spraying.

Fig. 2. be two-fluid sprayer profile.

Fig. 3. be Fig. 2 vertical view.

Fig. 4. the dry desulfurizer flow chart of boiler exhaust gas air-stream spraying.

As shown in Figure 1, the dry desulfurizing tower of air-stream spraying (hereinafter to be referred as tower) 5 is equipped with two two-fluid sprayers 4 and is fixed on the tower lid 18 by screw 17 and is connected with tower 5 sealings, compressed air inlet D and center latex vessel 11 and sealing ring 13 are arranged on the two-fluid sprayer 4, have emulsion inflow pipe 1 on the high-order emulsion groove 2, each emulsion inflow pipe 1 communicates with center latex vessel 11 on the sprayer 4, and number is identical, and sprayer 4 and desulfurizing tower 5 adopt carbon steel material to manufacture; Tower 5 is fixing by installing ring 6, have agitator 3 on the high-order emulsion groove 2, its operation principle as shown in Figure 4, water 9, lime 8 stirs in emulsion groove 7, its bits are discharged by slag-drip opening E, lime slurry is got on the high-order emulsion groove 2, stir by agitator 3, emulsion enters in the center latex vessel 11 on the sprayer 4 by emulsion inflow pipe 1, and from emulsion outlet 15 discharges, the flue gas of band sulphur enters the tower 5 from smoke inlet A, and compressed air enters the cavity 16 of spray gas 12 from compressed air inlet D end, and from nozzle 14 discharges, high-speed air flow is after the port of export 14 contact emulsions, and emulsion is ground into mist, becomes vaporific lime slurry, react in tower 5 with the flue gas of band sulphur, its reaction equation is:

Quick lime slurrying:

The desulfurization net reaction:

Finish sweetening process by top reaction equation, sediment is discharged by ash discharging hole C, and flue gas advances in the high-efficiency dust remover 10 by exhaust opening B, and final free of contamination gas enters chimney by exhaust opening H, and dust is discharged by ash discharging hole F,

Claims

1. the dry desulfurizer of boiler exhaust gas air-stream spraying is made up of emulsion groove, spray dry desulfurization tower, high-efficiency dust remover, it is characterized in that; 2 or 4 or 6 two-fluid sprayers are housed on the spray dry desulfurization tower, and high-order emulsion groove is equipped with at the top of tower, and high-order emulsion troughed belt agitator has the emulsion inflow pipe on the high-order emulsion groove.

2. the dry desulfurizer of boiler exhaust gas air-stream spraying according to claim 1, it is characterized in that: have compressed air inlet and center latex vessel on the two-fluid sprayer, spray nozzle is arranged on the sprayer body, and the center latex vessel equates with emulsion inflow pipe quantity and communicates.

3. the dry desulfurizer of boiler exhaust gas air-stream spraying according to claim 1, it is characterized in that: sprayer and air-stream spraying desulfurizing tower adopt carbon steel material.