法脱硫工艺的整个过程包括冷却、吸收、再热、石膏回收、原料调制等工序。脱硫脱硝设备工艺用雾化的石灰浆液在喷雾干燥塔中与烟气接触，石灰浆液与SO2反应后生成一种干燥的固体反应物，然后连同飞灰一起被除尘器收集。工业污水处理目前，国内外常用的烟气脱硫方法按其工艺大致可分为三类：湿式抛弃工艺、湿式回收工艺和干式工艺。其中变频器在设备中的应用为节约能源做出了巨大贡献。烟气中的二氧（Oxygen）化硫气体在玻璃钢脱硫塔内与碳酸钙吸收液进行气液接触。反应如下：脱硫塔内：CaCO3+SO3+12H2O CaSO3?12H2O+CO2氧化塔内：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.脱硫（化学符号：S）（产物:SO2）塔的特性

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

1.属于低温、低压且时间常数大的设备;

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

2.吸收液的氢离子浓度指数及浓度影响脱硫效率;

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

3.是处理腐蚀性很强的流体的设备，因而塔内易发生结垢、堵塞和腐蚀。烟气脱硫脱硝该装置的腐蚀控制一直是影响装置长周期安全运行的重点问题之一。

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.脱硫塔在设计时应注意事项

C. Precautions in the design of desulfurization tower

1.采用垢难以附着的、液体滞留少的简单塔结构。

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

2.通过试验调试控制吸收反应的pH值范围和吸收液的汽液比，在提高脱硫率的同时减少石灰石的过剩率。

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.通过数值模拟对玻璃材质钢脱硫塔流场分析，选择（xuanze）佳烟气流速，进行吸收液的佳分配，使吸收液能均匀分布，防止偏流发生，从而提高脱硫效率，减少结垢（属于化学遗留物）发生。 由以上介绍可见，公司在选择脱硫塔时应全面考虑，不仅要有较高的脱硫效率，石灰石的过剩率也不能太高，否则会结垢严重，影响塔的使用寿命。

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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