By setting baffles of different widths to optimize the flow field in the tower and changing the distribution of flue gas, this model reduces the scaling while ensuring the …
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Atmospheric sulfur dioxide (SO 2) is a toxic and notorious air pollutant that has negative effects on both humans and ecosystems [10].The ultra-low emission reconstruction has been implemented in China for thermal power plants requiring SO 2 emissions to be less than 35 mg m −3 [11,12]. Consequently, many techniques are provided to mitigate the release of SO 2 …
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This system mainly uses a fuzzy neural network water quality controller that adapts to the fluctuation of water quality, and provides intelligent adjustment services for operating …
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As a precondition for the optimization of the operating parameters, the target of desulfurization efficiency (η) and SO 2 emissions should be set according to the requirements. Moreover, optimal parameters such as the lime slurry pH and number of circulating pumps in operation also have reasonable and controllable ranges.
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the operation data from a 1000-MW unit, and the performance of model prediction and operation opti-mization is analyzed. Modeling and optimization results proved that the optimized operating parameters are able to minimize the total operating cost, with SO 2 emissions meeting the emission standards. Hybrid model of limestone-gypsum–based WFGD ...
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The desulfurization system for SO 3 removal mainly relies on the gas–liquid mass transfer process [18]. It has been shown that the SO 3 removal rate of wet desulfurization is affected by various factors such as inlet flue gas temperature, liquid to gas ratio, flue gas flow rate, spray layer coverage area, and slurry pH value.
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during low-load operation, and the flue gas parameters are quite different from those during normal high-load operation, which adversely affects the operation of various equipment in coal-fired power plants. For example, increasing the actual operating coal consumption of the unit, affecting the cooling of the boiler, reducing the NO
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A collaborative energy-saving operation optimization method and system for a dedusting and desulfurization system, and a device and a storage medium. The method comprises the following steps: calculating the total power consumption N of a dedusting and desulfurization system according to operation power consumption of an electric dust remover, a desulfurization …
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Generally, the operation parameters of many working conditions such as liquid/gas ratio (L/G) and tube immersion depth have a great influence on desulfurization efficiency. Other operation conditions such as flow patterns, pressure drop, temperature, and the velocity of gas-phase could be strongly influenced by the internal geometry structures ...
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Naphtha reforming in the absence of hydrogen along with desulfurization capability of zeolite catalysts has made the process considerably popular. In order to investigate the effect of operation conditions on the naphtha reforming process using zeolite catalyst in the absence of hydrogen, ZSM-5 catalyst (Si/Al = 50) was successfully synthesized.
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To solve this problem, Lu et al. [18] built a novel liquid separation device to adjust the zeotrope components in WHR systems, and then established thermoeconomic evaluation model and component adjustment strategy. Its power and energy-efficiency were improved by 0.52% and 2.20%, compared with traditional scheme, and the LCOE was reduced by 21. ...
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This review will focus on the recent advances in adsorptive desulfurization with respect to materials development and efficiencies, synthesis strategies and mechanisms of adsorption. Adsorptive desulfurization is usually conducted with the use of solid sorbents of different porosity and functionalities to achieve maximum adsorptive capacity.
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The desulfurization wastewater treatment device has three control objectives including pH control, PAH control, and turbidity control, which are to ensure that the desulfurized wastewater meets the requirements of IMO washing water discharge regulations.
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Adjusts the plasticity of mud, and make CMC and PEO play a role in weak acid or weak alkali ... (mass transfer) effect, and increase gas-liquid separation in the tower, a dual cyclone-enhanced desulfurization device was developed, as shown in Appendix A Fig. S4. Air entered the cyclone device via a central blind plate, reducing the rotation ...
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Handbook Of Refinery Desulfurization Chemical Industries Navigating the Maze: A Handbook of Refinery Desulfurization in Chemical Industries The global demand for cleaner fuels has pushed the chemical industry to adopt sophisticated
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The parameters related to the desulfurization efficiency and the desulfurization cost are: unit load L, flue gas flowrate F g, inlet SO 2 concentration C i, slurry flowrate supplied F s, pH value of slurry, density ρ of slurry, liquid level h and operation condition of related equipment.
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（1）Adjusting the liquid level of desulfurization tower to the set value by controlling seawater supply pump. （2）Adjust the pH value of washing circulation liquid to reach the set value by controlling the alkali liquor supply pump. （3）During the desulfurization process, the circulating pump is always running so that the washing
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Experimental research on the use of steel slag as a desulfurizer for FGD was started in China as early as 1996 [14]. Ding et al. [15], [16] studied the effect of process parameters on FGD of steel slag, and obtained the optimal process parameters of pH= 8–11, L/G= 10–24 L/m 3, μ = 4 %.Shi et al. [17] studied the mechanism of FGD of steel slag and pointed …
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As a relatively new type of desulfurization system, long-term high-efficiency desulfurization is a critical issue for commercial spray dispersion system applications. To analyze the coupling effects of different operation parameters, a series of operation performance predictions with their optimizations are implemented.
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To ensure the efficiency and process safety of the WFGD system during long-term operation, it is necessary to accurately predict the degree of influence of operating parameters …
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The operation optimization method of the desulfurization system based on data mining proposed in this paper mainly includes the following parts: data cleaning, …
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Industrial flue gas desulfurization technologies include the dry method (Kang et al., 2022), the semi-dry method (Cai et al., 2022), and the wet method (Cui et al., 2021). Dry and semi-dry desulfurization methods rely on the properties of the absorbent. Its sulfur adsorption capacity and desulfurization rate are lower than those of the wet method.
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In view of the BinYang existing characteristics of the equipment, the programmable controller PLC combined with ozone desulfurization denitration, design the real-time monitoring, the operation is ...
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Flue gas desulfurized gypsum mainly comes from thermal power plants, smelters, and large-enterprise boilers, and contains industrial by-products produced through a wet desulfurization combustion process, where SO 2 gas and lime slurry react under strong oxidation conditions. The main component of this gypsum is calcium sulfate dihydrate, which also …
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lifting device at the top to simplify the manual operation strength of loading and unloading. In the process of replacing the desulfurizer filler with the desulfurization tower, the normal use of the desulfurization tower can not be affected by the design of …
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2500 mg/Nm3, desulfurization efficiency above 95%, The SO2 emission concentration at the outlet of the desulfurization device is 100 mg/Nm3. After the desulfurization system has operated for a period of time, the phenomenon of bubbling and overflow occurs, which seriously affects the normal operation of the desulfurization process.
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shown in Figure 1, the control value of desulfurization efficiency in actual operation of a desulfurization device is as high as 99.742%, but the concentration of SO 2 emission value is only about 12 mg/m3, which necessitates the increase of …
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Sulfides are widely present in industrial wastewater cause environmental problems like malodorous, corrosive, and toxic. Microbial desulfurization technology has the advantages of ambient conditions, low energy consumption, and enables the recovery of sulfur (S 0).These advantages make it the technology of choice for treating middle and low loads of sulfide …
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desulfurization system operation data are used to improve the ORP semi-empirical formula obtained in the laboratory. It was concluded that the ORP was mainly affected by the concentration of sulfite and pH during the operation of the actual desulfurization system, the dissolved oxygen was less affected by
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