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一般气源生产厂家供给煤气输送公司煤气时,其流量贸易结算主要采用标准孔板节流装置及配套仪表计量系统,大多数节流装置是以焦炉煤气工艺条件为标准设计制作的,其组分体积百分比分别设定为H2(58.6%)、CH4(24.9%)、CO(8.1%)、CmHn(2.9%)、N2(2.8%)、O2(0.3%),同时设定焦炉煤气生产的温度、压力等工艺条件。下面以此为例,就混合煤气的组分、温度、压力等实际工作状态与设计状态不符时,仪表显示值与实际值之间的关系进行分析和讨论。
General gas supply gas supply company gas company, the flow of trade settlement using standard orifice throttling device and supporting instrumentation system, most of the throttling device is based on coke oven gas process conditions as the standard design and production, and its group The volume percentages are set to 58.6% for CH4, 24.9% for CH4, 8.1% for CO, 2.9% for CmHn, 2.8% for N2 and 0.3% for O2. The temperature, pressure and other process conditions. The following as an example, mixed gas composition, temperature, pressure and other actual working conditions and design state does not match, the instrument display value and the actual value of the relationship between analysis and discussion.