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生物脱硫系统的运行及控制?

时间:2021-09-30
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一起来详细了解下沼气设备系统中生物脱硫系统的运行及控制吧!
Let's learn more about the operation and control of biological desulfurization system in biogas equipment system!
1、沼气从喷淋反应器的下端进入,穿过填料层后从顶部离开,进入后续处理阶段,在沼气管道上应设有流量计,以随时监测管道内的沼气流量,此外,在沼管道上还应安装有沼气成份分析仪,以定时监测沼气中脱硫后沼气内的硫化氢含量和甲烷含量。
1. Biogas enters from the lower end of the spray reactor, leaves from the top after passing through the filler layer and enters the subsequent treatment stage. A flowmeter shall be set on the biogas pipeline to monitor the biogas flow in the pipeline at any time. In addition, a biogas composition analyzer shall be installed on the biogas pipeline to monitor the hydrogen sulfide content and methane content in the biogas after desulfurization.
2、喷淋培养液从曝气反应器泵出经换热器后至喷淋反应塔上部进入,在实现喷淋循环的同时,通过换热器使系统中培养液维持在一定的温度环境下。
2. The spray culture liquid is pumped out of the aeration reactor through the heat exchanger to the upper part of the spray reaction tower. While realizing the spray cycle, the culture liquid in the system is maintained at a certain temperature environment through the heat exchanger.
3.在调试及运行的期间,先确定一个适合的温度值。如果温度下降,启动换热器热水端的管道泵以升高温度。当温度升高到设定值时,停止管道泵。
3. During commissioning and operation, determine a suitable temperature value first. If the temperature drops, start the pipeline pump at the hot water end of the heat exchanger to increase the temperature. When the temperature rises to the set value, stop the pipeline pump.
4、风机采用了变频控制,经过培养液曝气反应器壁面上安装的ORP(氧化还原电位计)来测定培养液之中的含氧量,并经过变频器调节控制风机的出风量,以使培养液之中的含氧量控制于适当的范围。
4. The fan adopts frequency conversion control. The oxygen content in the culture medium is measured by ORP (redox potentiometer) installed on the wall of the culture medium aeration reactor, and the air output of the fan is adjusted and controlled by the frequency converter to control the oxygen content in the culture medium within an appropriate range.
5、在培养基曝气反应器壁上设置取样口,人工采集培养基的pH值,判断培养基中是否需要碱,碱的用量大小。通常来说,当终端产物为元素硫时,不需在培养基中加入碱。当终端产品为稀硫酸时,需要在培养基中加入碱,以保持培养基的中性要求。
5. A sampling port is set on the wall of the medium aeration reactor to manually collect the pH value of the medium to judge whether alkali is needed in the medium and the amount of alkali. Generally speaking, when the end product is elemental sulfur, it is not necessary to add alkali to the culture medium. When the end product is dilute sulfuric acid, alkali needs to be added to the culture medium to maintain the neutral requirements of the culture medium.
6、理想的操作模式是每天更换一部分培养基。培养基的来源可通过沼液后的过滤和稀释进行调节,调节方式须经试验确定。由于沼液原料不同,置换量也需要现场试验后确定,一般数据为每天更换数量的1/20至1/30。排出系统外的培养液需经过沉淀,以便在排出多余的培养液同时,从系统中带走可能存在的单质硫等固体物质。不同的沼气液可能不相同,使用何种营养液,具体要求和数量尽量是在调试时解决这个问题。
6. The ideal mode of operation is to change part of the medium every day. The source of culture medium can be adjusted by filtration and dilution after biogas slurry, and the adjustment method must be determined by test. Due to different biogas slurry raw materials, the replacement amount also needs to be determined after field test. The general data is 1 / 20 to 1 / 30 of the replacement amount per day. The culture solution discharged from the system needs to be precipitated to take away the possible solid substances such as elemental sulfur from the system while discharging the excess culture solution. Different biogas liquid may be different. The specific requirements and quantity of nutrient liquid to be used shall be solved during commissioning.

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