D88尊龙

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D88尊龙不同層次的瓦斯發電機系統的特點介紹

來源:http://dgxcbw.com   發布于:2019-04-27

中國現有煤層氣發電技術有很多種,但是如何選擇瓦斯發電機組,需求依據實踐狀況選擇,我國煤層氣呈現的特性是:甲烷含量低、濃度動搖大。這直接招致其不能像自然氣那樣大范圍的開采和應用。目前國內的煤層氣應用主要集中在甲烷濃度大于或等于30%的這局部,如今有兩種應用方式,一是供居民運用,二是停止瓦斯發電,五種適用于各種煤層氣發電技術比擬如下:

D88尊龙There are many kinds of coal-bed methane (CBM) power generation technologies in China, but how to select gas generating units depends on the actual situation. The characteristics of CBM in China are low methane content and high concentration fluctuation. This directly leads to the fact that it can not be exploited and applied on a large scale like natural gas. At present, the domestic application of CBM is mainly concentrated in the area where methane concentration is greater than or equal to 30%. Now there are two ways of application, one is for residents to use it, the other is to stop generating electricity from gas. Five kinds of technologies for generating electricity from coal-bed methane are compared as follows:

一、燃氣內燃機發電系統

I. Gas-fired Internal Combustion Engine Power Generation System

優點:熱效率較高;構造緊湊、重量輕,適于挪動;啟動便當;可選功率范圍寬;對瓦斯濃度順應性強;

Advantages: high thermal efficiency; compact structure, light weight, suitable for moving; easy start; wide range of optional power; strong compliance with gas concentration;

D88尊龙缺陷:構造復雜,噪音大;熄滅不完整,廢氣中CH、CO、NOX 等污染物含量較高;

D88尊龙Defects: Complex structure, high noise, incomplete quenching, high content of CH, CO, NOX and other pollutants in exhaust gas;

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二、燃氣輪機發電系統

II. Gas Turbine Power Generation System

優點:構造簡單、緊湊,運轉維護便當;單機功率大;啟動快捷、運轉平穩;毛病率低、自動化水平高;

D88尊龙Advantages: simple structure, compact, convenient operation and maintenance; high single-machine power; fast start-up, smooth operation; low defect rate, high automation level;

缺陷:小型燃氣輪機價錢昂貴,效率小,對瓦斯濃度請求較高40%以上;

D88尊龙Defects: Small gas turbines are expensive, inefficient and require more than 40% higher gas concentration.

三、蒸汽輪機發電系統

三、蒸汽輪機發電系統

優點:較好的應用余熱;技術較為成熟,主要用于結合循環發電;

D88尊龙Advantages: better application of waste heat; more mature technology, mainly used for combined cycle power generation;

D88尊龙缺陷:設備龐大、復雜不能挪動;初投資大,低負荷運轉時效率低;對瓦斯濃度請求高30%以上;

Defects: the equipment is huge, complex and can not be moved; the initial investment is large, the efficiency of low-load operation is low; the request for gas concentration is higher than 30%;

四、熱電聯產

IV. Cogeneration of Heat and Power

優點:熱效率高、污染小、環境代價低;節約用水、占地儉省、設備靈敏;

Advantages: high thermal efficiency, low pollution, low environmental cost, water saving, land saving, sensitive equipment;

缺陷:僅適用于大型電站 ;

Defects: Only suitable for large-scale power plants;

五、混合熄滅

D88尊龙V. Mixed extinction

優點:減少 SO2、NOX 的排放;減少純燃煤時的結垢;投資少, 技術風險小;

Advantages: reduce SO2, NOX emissions; reduce scaling in pure coal combustion; less investment, less technical risk;

D88尊龙缺陷:對水質請求高;鍋爐的功率必需足夠大僅適用于大型電站;

Defects: High requirement for water quality; Boiler power must be large enough for large-scale power plants;


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