濕法脫硫反應原理

　　Principle of wet desulfurization reaction

　　濕法脫硫塔主體包括洗滌塔、硫化氫采樣與監(jiān)測系統(tǒng)、堿液配置槽、供水軟水裝置、液位控制系統(tǒng)、支撐件和連接件。脫硫系統(tǒng)通過對出氣硫化氫濃度的監(jiān)控以及PH值監(jiān)控，實現全自動運行。運行時，沼氣由下至上通過脫硫塔，Wa2C03溶液(或Ha0H溶液)從頂部向下噴淋，使得H2S氣體與堿液發(fā)生了充分的化學反應。

　　The main body of the wet desulfurization tower includes a washing tower, a hydrogen sulfide sampling and monitoring system, an alkali solution preparation tank, a water supply soft water device, a liquid level control system, supporting components, and connecting components. The desulfurization system achieves fully automatic operation by monitoring the concentration of hydrogen sulfide in the exhaust gas and pH value. During operation, biogas passes through the desulfurization tower from bottom to top, and Wa2C03 solution (or Ha0H solution) is sprayed downwards from the top, causing sufficient chemical reaction between H2S gas and alkali solution.

　　由于沼氣中含有的大量C02成分，同樣會消耗堿液。系統(tǒng)應能對反應條件(包括反應溫度、PH值)等進行控制，設置合適反應條件，盡可能地減少堿液的消耗里。濕法催化脫硫一般采用酞菁鈷磺酸鹽系有機高分子化合物做為催化劑，反應原理如下:酞菁鈷磺酸鹽系有機高分子化合物，它是以多種金屬離子為中心的配位化合物，與其它液相催化氧化法脫硫的本質區(qū)別是脫硫和氧化再生兩個過程均有催化作用，它將一般液相催化氧化的再生過程的控制步驟，改變?yōu)槊摿蜻^程為全過程的控制步驟。

　　Due to the large amount of CO2 component contained in biogas, it also consumes alkaline solution. The system should be able to control the reaction conditions (including reaction temperature, pH value), set appropriate reaction conditions, and minimize the consumption of alkali solution as much as possible. Wet catalytic desulfurization generally uses phthalocyanine cobalt sulfonate organic polymer compounds as catalysts. The reaction principle is as follows: phthalocyanine cobalt sulfonate organic polymer compounds are coordination compounds centered on multiple metal ions. The essential difference from other liquid-phase catalytic oxidation desulfurization methods is that both desulfurization and oxidation regeneration processes have catalytic effects. It changes the control step of the regeneration process of general liquid-phase catalytic oxidation to the control step of the entire desulfurization process.

　　無機硫的化學吸收與催化轉化

　　Chemical absorption and catalytic conversion of inorganic sulfur

　　H,S + a2C0:= NaHS + NaHCO:2NaHS +NaHC0:+(X-1)S=NaSX +CO:+ HO

　　H,S + a2C0:= NaHS + NaHCO:2NaHS +NaHC0:+(X-1)S=NaSX +CO:+ HO

　　NaHS + H? = aOH + H,S

　　NaHS + H? =  aOH + H,S

　　33)

　　33)

　　a,SX + H20 = aOH + H,SX(4)

　　a,SX + H20 = aOH + H,SX(4)

　　反應(2)是酞菁鈷磺酸鹽法的反應，所謂催化化學吸收，就是指此反應。對有機硫的脫除反應

　　Reaction (2) is a reaction of cobalt phthalocyanine sulfonate method, and the so-called catalytic chemical absorption refers to this reaction. Removal reaction of organic sulfur

　　RSH + HaCO:= RSa + HaSCO.(5)C0S+2aC0:+H,0=NaCO,S + 2NaHCO:(的)CS:+NaC0:+H0=2NaHCO3

　　RSH+HaCO:=RSa+HaSCO. (5) C0S+2AC0:+H, 0=NaCO, S+2NaHCO: (of) CS:+NaC0:+H0=2NaHCO3

　　硫化物的催化氧化(再生)

　　Catalytic oxidation (regeneration) of sulfides

　　IagS +1/20,+H0=aOH + S+(8)

　　IagS +1/20,+H0=aOH + S+(8)

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