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沼氣提純水洗法的劣勢(shì)有哪些?

  水洗法劣勢(shì):

Disadvantages of water washing method:

  1) 微生物會(huì)在洗滌塔內(nèi)的填料表面生長(zhǎng)形成生物膜,從而造成填料堵塞,因此,需要安裝自動(dòng)沖洗裝置,或加氯殺菌;

1) Microorganisms will grow and form biofilms on the surface of the packing in the washing tower, causing packing blockage. Therefore, it is necessary to install an automatic flushing device or add chlorine for sterilization;

  2) 雖然水洗過(guò)程可以同時(shí)去除H2S,但為了避免其對(duì)脫碳階段所用壓縮設(shè)備的腐蝕,應(yīng)在脫CO2之前將其去除;

2) Although the washing process can simultaneously remove H2S, in order to avoid corrosion of the compression equipment used in the decarbonization stage, it should be removed before CO2 removal;

  3) 提純后的產(chǎn)品氣處于水分飽和狀態(tài),須進(jìn)行干燥;

3) The purified product gas is in a water saturated state and needs to be dried;

  4) 廢氣含有硫和低濃度的甲烷,在處理量大的水洗中,需用蓄熱式熱氧化技術(shù)進(jìn)行廢氣處理;

4) The exhaust gas contains sulfur and low concentration methane, and in high capacity water washing, thermal storage oxidation technology is required for exhaust gas treatment;

  5) 當(dāng)解析塔中的利用空氣進(jìn)行解析時(shí),空氣將溶解于水中的CO2和H2S剝離出,然后空氣/氣體混合物從剝離器頂部流出??諝庵械难鯕鈺?huì)部分溶解于水,可能會(huì)增加產(chǎn)品氣中氧氣的含量;

5) When using air for analysis in the tower, the dissolved CO2 and H2S in the water are stripped out by the air, and then the air/gas mixture flows out from the top of the stripper. The oxygen in the air will partially dissolve in water, which may increase the oxygen content in the product gas;

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  6) 有廢水產(chǎn)生,洗氣容器應(yīng)配有一個(gè)倒出裝置用來(lái)撇去和去除容器內(nèi)頂層液體。其中可能含有輕微的烴餾成分、硫、脂肪及其它污染物。撇出的液體(廢水)應(yīng)進(jìn)行收集并進(jìn)行處理;

6) If wastewater is generated, the gas washing container should be equipped with an outlet device to skim and remove the top liquid inside the container. It may contain slight hydrocarbon fractions, sulfur, fats, and other pollutants. The skimmed liquid (wastewater) should be collected and treated;

  7) 為了最大限度的提高在洗氣容器內(nèi)對(duì)CO2和H2S的吸收,工藝用水水溫應(yīng)小于10℃,一般大約保持在7℃,需配置工業(yè)冷水機(jī)組保持工藝用水溫度。在寒冷的環(huán)境中,連同冷水機(jī)組,增加風(fēng)冷散熱器用以增強(qiáng)系統(tǒng)效率。同時(shí)對(duì)工藝用水的要求是干凈不含礦物質(zhì)的軟化水;

7) In order to maximize the absorption of CO2 and H2S in the gas washing container, the process water temperature should be less than 10 ℃, generally maintained at around 7 ℃, and an industrial chiller unit should be installed to maintain the process water temperature. In cold environments, along with chillers, adding air-cooled radiators to enhance system efficiency. The requirement for process water is clean and mineral free softened water;

  8) 工藝水的pH值應(yīng)保持穩(wěn)定,由于吸收了原料氣中的H2S,會(huì)降低工藝水的pH,需要加堿來(lái)維持穩(wěn)定的pH值;

8) The pH value of the process water should be kept stable. Due to the absorption of H2S in the feed gas, the pH of the process water will be reduced, and alkali needs to be added to maintain a stable pH value;

  9) 吸收塔容易產(chǎn)生泡沫,需要消泡劑進(jìn)行處理。

9) The absorption tower is easy to produce foam and needs defoamer for treatment.

以上是關(guān)于 沼氣提純 的介紹,若想了解相關(guān)知識(shí)可請(qǐng)點(diǎn)擊:http://aycqc.cn 我們將會(huì)全心全意為您提供滿分服務(wù),歡迎您的來(lái)電!

The above is an introduction to biogas purification. If you want to learn more about related knowledge, please click: http://aycqc.cn We will wholeheartedly provide you with full score service. Welcome to call us!

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