廢氣噴淋塔是在可浮動(dòng)填料層氣體凈化器的基礎(chǔ)上改進(jìn)而產(chǎn)生的，廣泛應(yīng)用于工業(yè)廢氣凈化、除塵等方面的前處理，利用氣體與液體間的接觸，而將氣體中的污染物傳送到液體中，然后再將清潔氣體與被污染的液體分離，達(dá)到清凈空氣的目的。廢氣經(jīng)由填充式洗滌塔，采用氣液逆向吸收方式處理，即液體自塔頂向下以霧狀（或小液滴）噴撒而下。廢氣則由塔體（逆向流）達(dá)到氣液接觸之目的。此處理方可冷卻廢氣、調(diào)理氣體及去除顆粒，再經(jīng)過(guò)除霧段處理后，排入大氣中。

The waste gas spray tower is an improved version of the floating packing layer gas purifier, widely used in pre-treatment of industrial waste gas purification, dust removal, and other aspects. It utilizes the contact between gas and liquid to transfer pollutants from the gas to the liquid, and then separates the clean gas from the polluted liquid to achieve the goal of clean air. The exhaust gas is treated through a packed scrubbing tower using gas-liquid reverse absorption, where the liquid is sprayed down from the top of the tower in the form of mist (or small droplets). The exhaust gas achieves gas-liquid contact through the tower body (reverse flow). This treatment can cool the exhaust gas, regulate the gas, and remove particles. After passing through the defogging section, it is discharged into the atmosphere.

廢氣噴淋塔原理主要是根據(jù)臭氣的成分利用強(qiáng)酸（硫酸）、強(qiáng)堿（氫氧化鈉）、強(qiáng)氧化劑（次氯酸鈉）作為洗滌噴淋溶液與氣體中的臭氣分子發(fā)生接觸，使氣相的臭味成分轉(zhuǎn)移至液相，并借助化學(xué)藥劑與臭味成分中和、氧化反應(yīng)去除臭味物質(zhì)。

The principle of the exhaust gas spray tower is mainly based on the composition of the odor, using strong acids (sulfuric acid), strong bases (sodium hydroxide), and strong oxidants (sodium hypochlorite) as washing spray solutions to come into contact with odor molecules in the gas, transferring the odor components from the gas phase to the liquid phase, and using chemical agents to neutralize and oxidize the odor components to remove the odor substances.

噴淋塔廠家設(shè)備性能特點(diǎn)常用的洗滌設(shè)備為填充塔，化學(xué)吸收液從塔頂往下噴淋，廢氣向上流，臭氣與吸收液充分接觸、反應(yīng)從而被去除。吸收液與廢氣流量比例(液/氣比)一般為1-3 L/m3，填料高度一般為2-5米,氣體空塔流速一般為0.5-1米/秒。操作良好的填充塔，除臭效果可達(dá)到90%以上

The commonly used washing equipment for spray tower manufacturers is the filling tower, where the chemical absorption liquid is sprayed downwards from the top of the tower, and the exhaust gas flows upwards. The odor is fully contacted and reacted with the absorption liquid to be removed. The ratio of absorption liquid to exhaust gas flow rate (liquid/gas ratio) is generally 1-3 L/m3, the packing height is generally 2-5 meters, and the gas flow rate in the empty tower is generally 0.5-1 meters/second. A well operated filling tower can achieve a deodorization effect of over 90%

廢氣PP噴淋塔常用的化學(xué)吸收劑種類(lèi)

Types of chemical absorbents commonly used in exhaust gas PP spray towers

堿性溶液：堿性吸收液常用含有1%~10%的氫氧化鈉溶液，對(duì)消除硫化氫廢氣效果顯著，其它如甲硫醇、硫化甲基、二硫化甲基、低級(jí)脂肪酸等經(jīng)常在廢水處理場(chǎng)造成臭味的物質(zhì)，處理效果也很顯著。

Alkaline solution: Alkaline absorption solution commonly contains 1% to 10% sodium hydroxide solution, which has a significant effect on eliminating hydrogen sulfide waste gas. Other substances that often cause odor in wastewater treatment plants, such as methyl mercaptan, methyl sulfide, methyl disulfide, and lower fatty acids, also have significant treatment effects.

酸性溶液：酸液洗滌主要用于消除由氨、三甲胺等堿性氣體所致臭味，一般使用硫酸 (0.5%-5%的溶液)作為洗滌液。

Acidic solution: Acid washing is mainly used to eliminate odors caused by alkaline gases such as ammonia and trimethylamine. Generally, sulfuric acid (0.5% -5% solution) is used as the washing solution.

次氯酸鈉溶液：次氯酸鈉一般與酸堿性吸收液一起使用，對(duì)于其它方法很難消除的硫化甲基，使用次氯酸鈉吸收液的控制效果甚佳。

Sodium hypochlorite solution: Sodium hypochlorite is generally used together with acidic and alkaline absorbent solutions. For sulfurized methyl groups that are difficult to eliminate by other methods, the use of sodium hypochlorite absorbent solutions has excellent control effects.

處理高濃度臭氣時(shí)，次氯酸鈉溶液濃度 (有效氯濃度) 約為500~2000 ppm；而處理較低濃度臭氣時(shí)，使用次氯酸鈉溶液濃度約50~500 ppm。以各項(xiàng)氧化劑的性能而言，次氯酸鈉便宜，處理效果好，所以使用廣泛。在溶液中的次氯酸鈉以次氯酸 (HOCl)形式存在：

When dealing with high concentration odors, the concentration of sodium hypochlorite solution (effective chlorine concentration) is about 500-2000 ppm; When dealing with low concentration odors, sodium hypochlorite solution with a concentration of about 50-500 ppm is used. In terms of the performance of various oxidants, sodium hypochlorite is cheap and has good treatment effects, so it is widely used. Sodium hypochlorite in solution exists in the form of hypochlorous acid (HOCl):

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在pH=7.5，次氯酸鹽溶液的有效氯以50% HOCI和次氯酸根離子(OCl-)存在；

At pH 7.5, the effective chlorine in the hypochlorite solution exists as 50% HOCI and hypochlorite ions (OCl -);

在pH=l0，只有0.3%有效氯以HOCl存在；

At pH=10, only 0.3% of available chlorine exists as HOCl;

或12，HOCl幾乎完全解離成無(wú)用的次氯酸根離子，因此pH值控制很重。

Or 12, HOCl almost completely dissociates into useless hypochlorite ions, so pH control is very important.

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