D88尊龙

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煤礦瓦斯發電機組的技術研究

來源:http://dgxcbw.com   發布于:2019-01-24

1內燃機瓦斯發電技術

1. Gas Power Generation Technology of Internal Combustion Engine

D88尊龙內燃式瓦斯發電機組不只可以燃用高濃度瓦斯,還可以燃用低濃度瓦斯。它經過機組燃氣閉環控制系統,將瓦斯與空氣中的氧自動混合,根據燃燒室容積及壓縮比,對空燃比進行精確控制,確保淡漠燃燒及發電做功。自動檢測燃氣進氣溫度、燃氣進氣壓力、燃氣閥后肯定壓力、溫度、功率、轉速、均值排溫等參數,自動調整機組運轉工況,習慣現場瓦斯濃度及壓力動搖,確保機組平穩運轉,具有濃度習慣規模廣、抗動搖能力強、自動化程度高的特點。內燃式瓦斯發電機組采用了預燃技術和數字燃燒技術,經過這兩項技術,可以有效地增加燃燒能量,下降排汽溫度,提高機組功率。

D88尊龙Internal combustion gas generating units can burn not only high concentration gas, but also low concentration gas. Through the closed-loop control system of the unit gas, the gas and oxygen in the air are automatically mixed. According to the volume and compression ratio of the combustion chamber, the air-fuel ratio is accurately controlled to ensure indifferent combustion and efficient power generation. Automatic detection of gas intake temperature, gas intake pressure, gas valve after certain pressure, temperature, power, speed, mean temperature and other parameters, automatic adjustment of the unit operating conditions, habitual site gas concentration and pressure shaking, ensure the smooth operation of the unit, with a wide concentration habit, strong anti-shaking ability, high degree of automation. Pre-combustion technology and digital combustion technology are adopted in internal combustion gas generating units. Through these two technologies, combustion energy can be increased effectively, exhaust temperature can be lowered, and unit power can be increased.

D88尊龙2 高濃度瓦斯運送技術

2 High-concentration Gas Transportation Technology

高濃度瓦斯從抽放站引出經過水封阻火器、氣水分離器及干式阻火器至集裝箱式氣體預處理設備處理后送至發電機組發電,當瓦斯過剩或機組缺點檢修時,瓦斯經過火炬燃燒后排空。

D88尊龙High-concentration gas is extracted from the drainage station and sent to the generating unit after being treated by water-sealed flame arrester, gas-water separator and dry flame arrester. When the gas is excessive or the unit is defective, the gas is exhausted after the torch burning.

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1.1 集裝箱式瓦斯預處理工藝

1.1 Container Gas Pretreatment Technology

氣體預處理過程是自動控制的。它將瓦斯進行脫水、除塵、冷卻、加壓,并對瓦斯流量、濃度、壓力、溫度、濕度等參數進行監控,根據凝結水水位自動排水和報警。

The gas pretreatment process is automatically controlled. It will dehydrate, dedust, cool and pressurize the gas, and monitor the gas flow rate, concentration, pressure, temperature, humidity and other parameters. It will automatically drain and alarm according to the condensate water level.

1.2 火炬

1.2 torch

瓦斯濃度在30%以上的高濃度瓦斯發電工程,當瓦斯發電機組不能消耗一切的瓦斯氣時或發電機組缺點、正常檢修期間,高濃度瓦斯需放空時,自動點燃火炬燃燒后再排放大氣。當瓦斯濃度動搖改變,濃度低于30%時,火炬停止工作,瓦斯直接排空。火炬方式為落地封閉式火炬,流量調度規模根據總的瓦斯流量及機組的裝備情況來判定。火炬的處理氣量和燃氣發電機組的用氣量動態匹配。

In high-concentration gas power generation projects with gas concentration above 30%, when the gas generating unit can not consume all the gas, or the shortcomings of the generating unit, during the normal maintenance period, when the high-concentration gas needs to be emptied, it automatically ignites the torch and then discharges the atmosphere. When the gas concentration shakes and changes below 30%, the torch stops working and the gas is directly exhausted. The mode of flare is ground-closed flare, and the scale of flow dispatch is determined by the total gas flow and the equipment of the unit. The processing gas of the torch matches the gas consumption of the gas generator set dynamically.

1.3 低濃度瓦斯運送技術

1.3 Low Concentration Gas Transportation Technology

低濃度瓦斯從抽放站引出運用水位自控式水封阻火泄爆設備、絲網過濾器、瓦斯管道專用阻火器、溢流水封阻火泄爆設備、低溫濕式放散閥及低濃度瓦斯與細水霧混合安全運送等技術,完結瓦斯的安全運送,確保機組正常發電。

D88尊龙Low concentration gas is extracted from the drainage station by using water level automatic water seal fire and explosion relief equipment, screen filter, special flame arrester for gas pipeline, overflow water seal fire and explosion relief equipment, low temperature wet release valve and low concentration gas and water mist mixed safe transportation technology to complete the safe transportation of gas and ensure the normal power generation of the unit.

D88尊龙低濃度瓦斯與細水霧混合安全運送系統主要包含細水霧發作系統、脫水系統和控制系統,系統主要由濕式阻火泄爆設備、阻火器、水霧發作器、脫水器、循環水泵、水池及管道閥門組成。

The safe transportation system of low concentration gas and water mist mainly consists of water mist attack system, dehydration system and control system. The system is mainly composed of wet flame retardant and explosion relief equipment, fire retarder, water mist attack device, dehydrator, circulating water pump, pool and pipeline valve.

1.4 余熱運用技術

1.4 Waste Heat Utilization Technology

瓦斯發電機組燃燒后的煙氣排放溫度約為500~600℃。為了節能,在每臺機組排氣管道上設備一臺蒸汽余熱鍋爐,將軟化水經過給水泵送人余熱鍋爐中回收機組的排氣余熱,使排煙溫度降到150℃左右。生成的蒸汽聚集后送至熱用戶,凝結水回收至軟化水箱循環運用。

D88尊龙The flue gas emission temperature of gas generator set after combustion is about 500 - 600 C. In order to save energy, a steam waste heat boiler is equipped on the exhaust pipe of each unit. Softening water is pumped through the feed water to the waste heat boiler to recover the exhaust heat of the unit, so that the exhaust gas temperature is reduced to about 150 C. The generated steam is gathered and sent to the heat user, and the condensate water is recycled to the softening water tank for recycling.

軟化水系統由過濾器、全自動軟化水設備、管道泵、軟化水箱等組成,軟化水作為蒸汽余熱鍋爐的補水和發電機組內循環冷卻水系統補水以及霧化水池的補水。

Softening water system is composed of filters, automatic softening water equipment, pipeline pumps, softening water tanks, etc. Softening water is used as supplementary water for steam waste heat boiler and circulating cooling water system of generator set, as well as supplementary water for atomizing water pool.


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