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生物质气发电机组对燃气的要求有哪些?

来源:http://www.huannengpower.com   发布于:2019-01-03

1、生物质气温度≤40℃;

1. The temperature of biomass is less than 40 C.

2、生物质气压力3~20kpa,压力变化率≤1kpa/min;

2. The biomass pressure ranges from 3 to 20 kpa, and the pressure change rate is less than 1 kpa/min.

3、H2S≤200mg/Nm?;

3. H2S < 200mg/Nm?;

4、NH3≤20mg/Nm?;

4. NH3 < 20mg/Nm?;

5、焦油含量≤50mg/Nm?;

5. Tar content < 50mg/Nm?;

6、杂质粒度≤5um,杂质含量≤30mg/Nm?;

6. The particle size of impurities is less than 5 um and the content of impurities is less than 30 mg/Nm?.

7、生物质气中水分含量≤40mg/Nm?;

7. Water content in biomass gas is less than 40 mg/Nm?;

8、气体热值≥4.2MJ/Nm?。

8. Gas calorific value (> 4.2MJ/Nm?).

假如生物质气中含硫及氨成分较高,不仅会严峻腐蚀火花塞电极,而且会使机油中的酸值增加,腐蚀机组内部零件,同时易于生成沉淀物,增加对燃气发动机的磨损和腐蚀。

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If the sulfur and ammonia content in biomass gas is high, it will not only severely corrode the spark plug electrode, but also increase the acid value in the oil, corrode the internal parts of the unit, and easily generate precipitates, which will increase the wear and corrosion of the gas engine.

生物质气化发电技能又称生物质发电体系,简略地说,就是将各种低热值固体生物质能源资源(如农林业废弃物、生活有机垃圾等)经过气化转化为生物质燃气,经净化、降温后进入燃气发电机组发电的技能。

Biomass gasification power generation technology is also called biomass power generation system. Briefly speaking, it is the technology of converting various low calorific value solid biomass energy resources (such as agricultural and forestry wastes, domestic organic waste, etc.) into biomass gas by gasification, and then into gas-fired power generation units after purification and cooling.

生物质气化发电体系主要由气化炉、燃气净化体系和生物质气发电机组等组成:

The biomass gasification power generation system is mainly composed of gasifier, gas purification system and biomass gas generator set.

气化炉是将生物质能由固态转化为燃气的设备。生物质在气化炉内经过控制空气供应量,而进行不彻底焚烧,完结低值生物质能由固体向气态的转化,生成包括氢气(H2)、一氧化碳(CO)、甲烷(CH4)、多碳烃(CnHm)等可燃成分的燃气,完结生物质的气化进程。

Gasifier is a device that converts biomass energy from solid state to gas. After controlling the air supply in the gasifier, biomass is incinerated incompletely, and the conversion of low-value biomass energy from solid to gaseous is completed. The gasification process of biomass is completed by the formation of combustible gases including hydrogen (H2), carbon monoxide (CO), methane (CH4) and polycarbons (CnHm).

气化产生的燃气出口温度随气化炉型式的不同,在350℃~650℃之间,而且燃气中含有未彻底裂解的焦油及尘埃等杂质,为满足内燃机长时间可靠工作的要求,需要对燃气进行冷却和净化处理,使燃气温度降到40℃以下、焦油尘埃含量控制在50mg/Nm3以内,燃气经过净化后,再进入生物质气发电机组发电

The outlet temperature of gas produced by gasification varies with the type of gasifier, ranging from 350 to 650 degrees centigrade, and the gas contains impurities such as tar and dust which have not been completely cracked. In order to meet the requirement of long-term reliable operation of internal combustion engine, it is necessary to cool and purify the gas, so that the gas temperature can be reduced to below 40 degrees centigrade, the tar dust content can be controlled within 50 mg/Nm3, and the gas can be purified. After that, it enters the biomass gas generating unit to generate electricity.

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