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沼气设备系统中生物脱硫系统的运行及控制?

时间:2020-08-27
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  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 and leaves from the top after passing through the packing layer. A flowmeter should be installed on the biogas pipeline to monitor the biogas flow in the pipeline at any time. In addition, a biogas composition analyzer should be installed on the biogas pipeline to monitor the content of hydrogen sulfide and methane 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 from the aeration reactor through the heat exchanger and enters into the upper part of the spray reaction tower. While the spray circulation is realized, the culture medium in the system is maintained at a certain temperature through the heat exchanger.
  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。
  During commissioning and operation, determine a suitable temperature value. If the temperature drops, start the pipe 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.
               生物脱硫
  3、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。
  3. The fan is controlled by frequency conversion. The oxygen content in the culture medium is determined by ORP (oxidation-reduction potentiometer) installed on the wall of the aeration reactor for culture medium, and the air volume of the fan is controlled by the frequency converter to control the oxygen content in the culture medium in an appropriate range.
  分析得出,这种控制方式的终端目的是控制进入沼气中的氧浓度,如上所述,沼气中混有不同的氧浓度,反应后的生成物是不相同的,反应后的产物可能是单质硫也可能会是稀硫酸,较为可能的会是两者的混合物。
  The analysis shows that the terminal purpose of this control mode is to control the oxygen concentration entering the biogas. As mentioned above, when the biogas is mixed with different oxygen concentrations, the products after reaction are different. The product after reaction may be elemental sulfur or dilute sulfuric acid, and more likely it will be a mixture of the two.
  4、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。
  4. A sampling port is set on the wall of the aeration reactor of the medium, and the pH value of the medium is collected manually to judge whether alkali is needed in the medium and the amount of alkali used. In general, when the end product is elemental sulfur, it is not necessary to add alkali to the medium. When the end product is dilute sulfuric acid, alkali should be added to the medium to maintain the neutral requirement of the medium.
  5、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。大致的数量是每天更换1至2立方米左右。
  5. The ideal operation mode 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 mode must be determined by experiment. Due to the different raw materials of biogas slurry, the replacement amount also needs to be determined after field test, and the general data is 1 / 20 to 1 / 30 of the daily replacement quantity. The culture medium out of the system needs to be precipitated to remove the possible elemental sulfur and other solid substances from the system at the same time. Different biogas liquid may be different. The specific requirements and quantity of nutrient solution to be used should be solved during commissioning. The approximate quantity is about 1 to 2 cubic meters per day.
  6、排渣采用了管道泵排渣的形式,经过过滤器以后把多余培养液送至污水处理车间。由此分析出,通常排放量与加入的培养液量相等。
  6. After passing through the filter, the excess culture liquid is sent to the sewage treatment workshop. From this analysis, the discharge amount is usually equal to the amount of culture medium added.
  本文由生物脱硫http://www.hneee.net厂家整理提供,相信大家都有所了解了,如您还有其他问题欢迎咨询我们网站。
  In this paper, biological desulfurization is introduced http://www.hneee.net The factory arranges to provide, believed everybody has understood, if you have other questions, welcome to consult our website.