How to carry out air pollution control glass steel purification tower: chemical washing tower principle is mainly based on the odor components by using strong acid (sulfuric acid), alkali (sodium hydroxide) and oxidant (sodium hypochlorite) as washing spray solution and odor molecules in the gas gas liquid contact, the gas phase to the liquid phase transfer of odor components and, by chemical and odor components or other chemical reaction, oxidation and odor removal. Application of chemical cleaning method for treatment of odor substances including organic sulfur compounds, nitrogen compounds, organic acids, oxygenated hydrocarbons, containing halide waste material. Suitable for sludge treatment, food, petroleum, chemical, pharmaceutical and other industries. Treatment of waste gas pollution with glass fiber reinforced plastic tower
(1), washing equipment chemical washing equipment commonly used for filling liquid chemical absorption tower, from the top down to the upper spray, exhaust gas, odor and absorbing liquid full contact and reaction can be removed. The absorption liquid and the exhaust gas flow ratio (liquid / gas ratio) is generally 1-3 L/m 3, the packing height is generally 2-5 meters, gas air tower flow rate is generally 0.5-1 M / s. Well packed tower, deodorization effect can reach more than 90%.
(2), chemical absorbents commonly used chemical absorbents including the following: (1) alkaline solution alkaline absorption solution containing 1~10% sodium hydroxide is used to remove hydrogen sulfide, very effective, such as methyl mercaptan, methyl sulfide, two methyl sulfide, lower fatty acids, often in wastewater treatment field caused by the smell of the material, this method can obtain good treatment effect. (2) acid solution acid washing is mainly used to eliminate the odor caused by ammonia, trimethylamine and other basic gases, the general use of sulfuric acid (0.5-5% solution) for the washing liquid. (3) sodium hypochlorite solution: sodium hypochlorite and general acid-base absorption liquid used together. Methyl sulfide for other methods is difficult to eliminate the use of sodium hypochlorite solution absorption control effect is very good. Treatment of high concentration wastewater treatment plant odor, concentration of sodium hypochlorite solution (available chlorine concentration) is about 500~2000 ppm; and the lower concentration of odor when using sodium hypochlorite solution concentration of about 50~500 ppm. The performance of the oxidizing agent, sodium hypochlorite is the cheapest, the effect is good, it is the most commonly used. In the sodium hypochlorite solution of hypochlorite (HOCl): NaOCl+ H2O HOCl+ to form NaOH... In... PH=7.5, available chlorine hypochlorite solution with 50% HOCI and hypochlorite ion (OCl -) existence. In pH=l0, only 0.3% available chlorine existed in HOCl; in pH=l1 or 12, HOCl is almost completely dissociated into useless hypochlorite ions, so the pH value control is very important. Treatment of waste gas pollution with glass fiber reinforced plastic tower