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沼氣預處理對沼氣發電機組影響及相關特點

來源:http://dgxcbw.comD88尊龙   發布于:2019-04-17

D88尊龙針對發起機對沼氣的請求,在沼氣發起機前裝置處置系統以處理了氣源側與用氣側的矛盾是目前處理沼氣發電機組應用問題的有效辦法,主要表如今以下兩個方面:

In response to the request of biogas generator for biogas, the disposal system in front of the biogas generator to deal with the contradiction between the gas source side and the gas side is an effective way to deal with the application of biogas generating units. The following two aspects are mainly manifested today:

D88尊龙1 降低氣體的相對濕度

D88尊龙1. Reducing the relative humidity of gases

D88尊龙水分的脫除,思索到詳細的狀況,簡單分為凝結水的脫除以及未凝結水脫除兩大局部,前者能夠采用汽水別離器來完成,后者的完成較為復雜,目前主要有下面幾種方式:

The removal of water can be divided into two parts: the removal of condensate water and the removal of non-condensate water. The former can be accomplished by steam-water separator, while the latter is more complex. At present, there are mainly the following ways:

(a)低溫除濕:經過制冷設備降低氣體的溫度,使得其中的水蒸氣凝結,然后掃除系統;

D88尊龙(a) Low temperature dehumidification: the refrigeration equipment reduces the temperature of the gas, condensates the water vapor in it, and then sweeps the system;

D88尊龙(b)吸附:采用對水有較強吸附作用的吸附劑,將氣體中的水剖析出;

D88尊龙(b) Adsorption: Water in the gas is separated by adsorbent with strong adsorbing effect on water.

QQ截圖20171025151837.jpg

D88尊龙(c)膜過濾:采用特殊構造的膜資料,在特定的條件下將水從氣體中分出。

(c) Membrane filtration: Water is separated from gases under specific conditions using specially constructed membrane data.

2 降低氣體雜質成分含量

D88尊龙2. Reducing the content of impurities in gases

氣體中的雜質是比擬復雜的成分,由于是針對發起機的應用,所以對雜質的判別主要以發起機的請求為準,主要有下面幾種:

Impurities in gases are comparatively complex components. Because they are for the application of the initiator, the identification of impurities is mainly based on the request of the initiator. There are the following main types:

(a)硫的去除:

(a) Removal of sulphur:

D88尊龙以硫化氫為主的硫化物的去除主要有物理、化學以及生物三種方式。其中物理辦法主要指物理吸附方式脫硫,這種方式操作煩瑣,但常常需求占地較大的設備,而且吸附劑需求再生。化學方式指以化學反響的方式將硫固化下來,目前有干法及濕法,其差異主要是反響物的物理形態是固體還是液體的差異。生物法脫硫是目前比擬新興的一種方式,其主要原理是在反響罐中培育出適宜的菌種,這些菌種以硫化物為養料,將其中的硫固定下來。 關于硫含量不高的氣體,采用物理吸附或者干法脫硫普通比擬經濟適用,而且操作煩瑣。

D88尊龙The removal of hydrogen sulfide mainly includes physical, chemical and biological methods. Physical method mainly refers to physical adsorption desulfurization, which is cumbersome to operate, but often requires larger equipment, and adsorbent needs regeneration. Chemical means that sulfur is solidified by chemical reaction. At present, there are dry and wet methods. The main difference is whether the physical form of the reactant is solid or liquid. Biological desulfurization is a newly developed method. Its main principle is to cultivate suitable strains in the reactor tank. These strains are fed with sulfide and fix sulfur in them. For gases with low sulfur content, physical adsorption or dry desulfurization is generally economical and applicable, and the operation is cumbersome.

此外,依據我國的環保規范規則:沼氣作為能源應用時,沼氣中的H2S含量不得超越200mg/Nm3。因而沼氣經過脫硫處置后需求采用沼氣剖析儀對沼氣中H2S含量停止實時在線監測,為業主提供實時精確的數據參考,協助其對沼氣預處置工藝停止優化調整,進步沼氣發電機組進氣質量,以保證H2S含量到達沼氣發電的請求。

In addition, according to China's environmental protection regulations, when biogas is used as energy, the H2S content in biogas should not exceed 200 mg/Nm3. Therefore, it is necessary to use biogas analyzer to stop real-time on-line monitoring of H2S content in biogas after desulfurization treatment, to provide real-time and accurate data reference for owners, to help them stop optimizing and adjusting the pretreatment process of biogas, and to improve the intake quality of biogas generating units, so as to ensure that H2S content reaches the requirement of Biogas power generation.

D88尊龙由于沼氣成分復雜,除H2S外還含有CH4、CO2、O2等氣體成分,假如要保證沼氣發電機組的沼氣質量,進步沼氣熱值,保證沼氣熄滅發電效率,除了要降低H2S含量,經過監測沼氣中CH4、CO2的濃度,為優化厭氧發酵工藝,進步CH4含量,降低CO2含量提供參考根據,也是非常必要的。

D88尊龙Because the composition of biogas is complex, besides H2S, it also contains CH4, CO2 and O2. If we want to ensure the biogas quality of biogas generating units, improve the calorific value of biogas, and ensure the efficiency of biogas extinguishing and generating electricity, besides reducing the content of H2S, the concentration of CH4 and CO2 in biogas should be monitored to provide reference basis for optimizing anaerobic fermentation process, improving the content of CH4 and reducing the content of CO2. Necessary.


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