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沼气脱硫脱水工艺流程先容

时间:2021-09-17
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沼气脱硫原因:沼气中含有水份,水分对沼气的利用影响大,沼气中的水分与硫化氢共同作用,能加速管道及阀门、流量计等的腐蚀,对家用电器也有腐蚀作用。为正常供气,延长设备的使用寿命,在输气管路中须安装沼气脱硫器。所以在进行沼气脱硫时,需要同时进行脱水处理。去除沼气中的水分,增加产出沼气的质量。
Reasons for biogas desulfurization: biogas contains water, which has a great impact on the utilization of biogas. The combined action of water in biogas and hydrogen sulfide can accelerate the corrosion of pipelines, valves and flow meters, and also have a corrosive effect on household appliances. In order to supply gas normally and prolong the service life of the equipment, a biogas desulfurizer must be installed in the gas transmission pipeline. Therefore, during biogas desulfurization, dehydration treatment needs to be carried out at the same time. Remove the moisture in biogas and increase the quality of biogas.
沼气脱硫方法:沼气脱硫器的脱硫方法有湿法和干法脱硫两种,干法脱硫具有工艺简单、成熟可靠、造价低等优点,并有较好的净化效果。
Biogas desulfurization methods: the desulfurization methods of biogas desulfurizer include wet desulfurization and dry desulfurization. Dry desulfurization has the advantages of simple process, mature and reliable, low cost and good purification effect.
沼气脱水器外部采用碳钢结构,内部防腐处理,当沼气以一定的压力从上部的进气口进入后,水滴在离心力作用下旋转与脱水器壁发生碰撞,使水滴失去动能与沼气相分离,以达到除尘和脱水的目的。而后器内的水滴沿内壁向 下 流动,而存于装置底部;并定期排除。
The outside of the biogas dehydrator adopts carbon steel structure and internal anti-corrosion treatment. When the biogas enters from the upper air inlet under a certain pressure, the water droplets rotate and collide with the dehydrator wall under the action of centrifugal force, so that the water droplets lose kinetic energy and separate from the biogas, so as to achieve the purpose of dust removal and dehydration. The water droplets in the latter flow downward along the inner wall and are stored at the bottom of the device; And eliminate it regularly.
沼气脱硫脱水工艺流程:
Biogas desulfurization and dehydration process flow:
从软体沼气池中出来的沼气中含有大量的水气、粉尘杂质、硫化氢等有害气体。沼气经过初步脱水除尘后然后进入脱硫器,利用合理的反应条件可将沼气中的硫化氢脱至200ppm以下,脱硫后的沼气进入沼气增压风机进行增压输送,增压后的沼气进入缓冲系统进行缓冲,一方面进行沼气除杂处理,另一方面稳定送气压力,以保后续发电机组的稳定运行,缓冲稳压后的沼气进入终端用气设备。
The biogas from the soft biogas digester contains a lot of harmful gases such as water gas, dust impurities and hydrogen sulfide. After preliminary dehydration and dust removal, the biogas enters the desulfurizer. The hydrogen sulfide in the biogas can be removed below 200ppm by using reasonable reaction conditions. The desulfurized biogas enters the biogas booster fan for pressurized transmission, and the pressurized biogas enters the buffer system for buffering. On the one hand, the biogas is subject to impurity removal and on the other hand, the gas supply pressure is stabilized, In order to ensure the stable operation of subsequent generator units, the buffered and stabilized biogas enters the terminal gas equipment.
沼气脱硫器维护和保养:
Maintenance of biogas desulfurizer:
使用一段时间后,脱硫器内的脱硫剂会变黑,失去活性,脱硫效果降低,也可能板结,增加沼气输送阻力,严重时,沼气会被阻塞不能通过。此时,须将脱硫剂进行再生。
After using for a period of time, the desulfurizer in the desulfurizer will turn black, lose activity, reduce the desulfurization effect, or harden and increase the resistance of biogas transmission. In serious cases, the biogas will be blocked and cannot pass through. At this time, the desulfurizer must be regenerated.
再生的方法:是将失活的脱硫剂取出,均匀疏松地堆放在平整、干净、背阳、通风的场地上,经常翻动脱硫剂,使其与空气充分接触氧化再生。当脱硫剂中水分含量低时,可均匀喷撒稀碱液,以加速再生速度,缩短再生时间,一般经过1个月左右,可装入脱硫器内继续使用。脱硫剂可以再生1~2次。
Regeneration method: take out the deactivated desulfurizer, stack it evenly and loosely on a flat, clean, sunny and ventilated site, and often turn the desulfurizer to make it fully contact with the air for oxidation regeneration. When the moisture content in the desulfurizer is low, dilute alkali liquor can be sprayed evenly to accelerate the regeneration speed and shorten the regeneration time. Generally, it can be put into the desulfurizer for further use after about one month. Desulfurizer can be regenerated for 1 ~ 2 times.
用户可根据实际气体气量和气体中硫化氢含量,量身定做沼气脱水器外形尺寸和内部结构。不同类型的气体,不同气体中硫化氢含量,不同气体压力设计的脱硫设备尺寸不同,内部结构也不同。
Users can customize the overall dimension and internal structure of biogas dehydrator according to the actual gas volume and hydrogen sulfide content in gas. Different types of gases, hydrogen sulfide content in different gases and different gas pressures design desulfurization equipment with different sizes and internal structures.

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