法脫硫工藝的整個(gè)過程包括冷卻、吸收、再熱、石膏回收、原料調(diào)制等工序。脫硫脫硝設(shè)備工藝用霧化的石灰漿液在噴霧干燥塔中與煙氣接觸，石灰漿液與SO2反應(yīng)后生成一種干燥的固體反應(yīng)物，然后連同飛灰一起被除塵器收集。工業(yè)污水處理目前，國內(nèi)外常用的煙氣脫硫方法按其工藝大致可分為三類：濕式拋棄工藝、濕式回收工藝和干式工藝。其中變頻器在設(shè)備中的應(yīng)用為節(jié)約能源做出了巨大貢獻(xiàn)。煙氣中的二氧（Oxygen）化硫氣體在玻璃鋼脫硫塔內(nèi)與碳酸鈣吸收液進(jìn)行氣液接觸。反應(yīng)如下：脫硫塔內(nèi)：CaCO3+SO3+12H2O CaSO3?12H2O+CO2氧化塔內(nèi)：CaSO3?12H2O+32O2+32H2O CaSO4+2H2O2。

The entire process of desulfurization technology includes cooling, absorption, reheating, gypsum recovery, raw material preparation, and other procedures. The atomized lime slurry used in the desulfurization and denitrification equipment process is in contact with the flue gas in the spray drying tower. The lime slurry reacts with SO2 to generate a dry solid reactant, which is then collected by the dust collector together with the fly ash. At present, the commonly used flue gas desulfurization methods for industrial wastewater treatment at home and abroad can be roughly divided into three categories according to their processes: wet abandonment process, wet recovery process, and dry process. The application of frequency converters in equipment has made significant contributions to energy conservation. The sulfur dioxide gas in the flue gas comes into gas-liquid contact with the calcium carbonate absorption solution in the fiberglass desulfurization tower. The reaction is as follows: Inside the desulfurization tower: CaCO3+SO3+12H2O CaSO3? 12H2O+CO2 oxidation tower: CaSO3? 12H2O+32O2+32H2O CaSO4+2H2O2。

B.脫硫（化學(xué)符號：S）（產(chǎn)物:SO2）塔的特性

B. Characteristics of desulfurization (chemical symbol: S) (product: SO2) tower

1.屬于低溫、低壓且時(shí)間常數(shù)大的設(shè)備;

1. It belongs to equipment with low temperature, low pressure, and large time constant;

2.吸收液的氫離子濃度指數(shù)及濃度影響脫硫效率;

2. The hydrogen ion concentration index of the absorption solution and its impact on desulfurization efficiency;

3.是處理腐蝕性很強(qiáng)的流體的設(shè)備，因而塔內(nèi)易發(fā)生結(jié)垢、堵塞和腐蝕。煙氣脫硫脫硝該裝置的腐蝕控制一直是影響裝置長周期安全運(yùn)行的重點(diǎn)問題之一。

3. It is a device that deals with highly corrosive fluids, so scaling, blockage, and corrosion are prone to occur inside the tower. The corrosion control of flue gas desulfurization and denitrification equipment has always been one of the key issues affecting the long-term safe operation of the equipment.

C.脫硫塔在設(shè)計(jì)時(shí)應(yīng)注意事項(xiàng)

C. Precautions in the design of desulfurization tower

1.采用垢難以附著的、液體滯留少的簡單塔結(jié)構(gòu)。

1. Adopt a simple tower structure that is difficult for scale to adhere to and has less liquid retention.

2.通過試驗(yàn)調(diào)試控制吸收反應(yīng)的pH值范圍和吸收液的汽液比，在提高脫硫率的同時(shí)減少石灰石的過剩率。

2. By conducting experiments and adjusting the pH range of the absorption reaction and the vapor-liquid ratio of the absorption solution, the excess rate of limestone can be reduced while improving the desulfurization rate.

3.通過數(shù)值模擬對玻璃材質(zhì)鋼脫硫塔流場分析，選擇（xuanze）佳煙氣流速，進(jìn)行吸收液的佳分配，使吸收液能均勻分布，防止偏流發(fā)生，從而提高脫硫效率，減少結(jié)垢（屬于化學(xué)遺留物）發(fā)生。 由以上介紹可見，公司在選擇脫硫塔時(shí)應(yīng)全面考慮，不僅要有較高的脫硫效率，石灰石的過剩率也不能太高，否則會(huì)結(jié)垢嚴(yán)重，影響塔的使用壽命。

3. Analyze the flow field of the fiberglass desulfurization tower through numerical simulation, select the optimal flue gas flow rate, and distribute the absorption liquid evenly to prevent bias flow, thereby improving desulfurization efficiency and reducing scaling (which belongs to chemical residues). From the above introduction, it can be seen that the company should consider comprehensively when choosing a desulfurization tower. Not only should it have a high desulfurization efficiency, but the excess rate of limestone should also not be too high, otherwise it will cause serious scaling and affect the service life of the tower.

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