濕式除塵的優(yōu)點(diǎn)是易于維護(hù)，通過(guò)配制不同的除塵劑，可以同時(shí)達(dá)到除塵和脫硫(脫硝)的效果。缺點(diǎn)是除塵液需要處理，可能導(dǎo)致二次污染。根據(jù)風(fēng)量設(shè)計(jì)或選擇袋式除塵器時(shí)，一般不允許在風(fēng)量超過(guò)規(guī)定風(fēng)量的情況下運(yùn)行，否則容易堵塞濾袋，縮短使用壽命，大大增加壓力損失，也降低除塵效率。但風(fēng)量不宜過(guò)大，否則會(huì)增加設(shè)備投資和占地面積。
The advantage of wet dedusting is easy maintenance. By preparing different dedusting agents, the effects of dedusting and desulfurization (denitration) can be achieved at the same time. The disadvantage is that the dedusting liquid needs to be treated, which may lead to secondary pollution. When designing or selecting the bag filter according to the air volume, it is generally not allowed to operate when the air volume exceeds the specified air volume, otherwise it is easy to block the filter bag, shorten the service life, greatly increase the pressure loss and reduce the dust removal efficiency. However, the air volume should not be too large, otherwise the equipment investment and floor area will be increased.
目前使用的PPS濾料有很多。溫度是170℃。對(duì)于袋式除塵器，使用溫度與除塵效率的關(guān)系不明顯，與靜電除塵器不同。對(duì)于靜電除塵器來(lái)說(shuō)，溫度的變化會(huì)影響粉塵的比電阻和除塵效率。玻璃鋼的長(zhǎng)期耐溫性較差。玻璃鋼一般不能長(zhǎng)期高溫使用，一般聚酯玻璃鋼在50℃以上強(qiáng)度會(huì)明顯下降，一般只能在100℃以下使用。當(dāng)溫度超過(guò)60℃時(shí)，通用環(huán)氧玻璃鋼的強(qiáng)度明顯下降。

There are many PPS filter materials used at present. The temperature is 170 ℃. For bag filter, the relationship between service temperature and dust removal efficiency is not obvious, which is different from electrostatic precipitator. For electrostatic precipitator, the change of temperature will affect the specific resistance of dust and dust removal efficiency. FRP has poor long-term temperature resistance. FRP generally cannot be used at high temperature for a long time. Generally, the strength of polyester FRP will decrease significantly above 50 ℃, and it can only be used below 100 ℃. When the temperature exceeds 60 ℃, the strength of general epoxy FRP decreases obviously.
但可選用耐高溫樹(shù)脂，可將長(zhǎng)期工作溫度保持在200~300℃。玻璃纖維增強(qiáng)塑料(FRP)層間剪切強(qiáng)度層間剪切強(qiáng)度由樹(shù)脂承擔(dān)，因此比較低。膜脫硫除塵器的清洗孔應(yīng)位于管道的側(cè)面或上部，所有清洗孔嚴(yán)密不透氣。如果有漏氣，清洗孔上游管道內(nèi)的流速會(huì)降低，積塵會(huì)更加嚴(yán)重，導(dǎo)致吸塵孔的排氣量減少。因此，在玻璃鋼脫硫除塵器的日常維護(hù)工作中，一定要注意細(xì)節(jié)。
However, high temperature resistant resin can be selected to maintain the long-term working temperature at 200 ~ 300 ℃. The interlaminar shear strength of glass fiber reinforced plastics (FRP) is borne by resin, so it is relatively low. The cleaning holes of membrane desulfurization dust remover shall be located at the side or upper part of the pipeline, and all cleaning holes must be tight and airtight. If there is air leakage, the flow rate in the pipeline upstream of the cleaning hole will be reduced, and the dust accumulation will be more serious, resulting in the reduction of the exhaust volume of the dust suction hole. Therefore, attention must be paid to details in the daily maintenance of FRP desulfurization and dust collector.
實(shí)際運(yùn)行中，由于沼氣脫硫裝置生產(chǎn)設(shè)備的間歇運(yùn)行以及一些未考慮的因素，粉塵也會(huì)沉積在管道中，越積越厚，一時(shí)難以清除。
In the actual operation, due to the intermittent operation of the production equipment of the biogas desulfurization unit and some factors not considered, the dust will also be deposited in the pipeline, the more accumulated and thicker, which is difficult to remove at the moment.
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