摘要:
The invention relates to a method for determining the gas quality of a sample gas mixed at least in part with biogas, having the main components CH4, CO2, N2, O2, H2, proceeding from a spectrum of the sample gas determined by means of infrared-spectroscopy measurement methods, under operating conditions, from which the mole ratios of the sample gas are determined by means of correlative methods, and converted to characteristic variables of the gas quality. In this connection, the optical absorption of methane CH4 and carbon dioxide CO2 and the heat conductivity λ of the sample gas are measured, the mole ratio xCH4 is determined from the absorption of the CH4, the mole ratio xCO2 is determined from the absorption of the CO2, the mole ratios of nitrogen xN2, of oxygen xO2 and of hydrogen xH2 that are not detected optically are determined from the mole ratios xCH4, xCO2 and the heat conductivity λ, by means of a correlation calculation λ=F(xCH4,xCO2,xN2,xO2,xH2), whereupon characteristic parameters of the sample gas are calculated from the mole ratios obtained in this way.
摘要:
A method for measuring operational density and/or operational sound velocity in a gaseous medium uses a sound transducer that is capable of vibrating, which is disposed in a housing in such a manner that chambers having the same volume are formed on both sides of the sound transducer, which are filled by the gaseous medium. The chambers are connected with one another by way of an open channel having defined dimensions. Using an exciter vibration applied to the sound transducer, the impedance of the sound transducer, which is influenced by the density of the gaseous medium, is determined within a frequency range that can be established, as a function of the exciter frequency. From this, the operational density and/or the operational sound velocity of the gaseous medium are determined using a plurality of characteristic frequencies of the sound transducer vibrating in the gaseous medium.
摘要:
The industrial burner comprising a mixing chamber, which is provided with at least one opening into a furnace room, through which opening at least a partially-mixed fuel flow from the mixing chamber dispenses into the furnace room during operation. A combustion air supplier, through which the mixing chamber is supplied with combustion air during operation, and a fuel supplier, with which fuel is introduced into the mixing chamber, are provided. The fuel supplier can switch between a first and a second operation state, wherein in the first operation state, fuel is introduced into the mixing chamber at a first angle, and in the second operation state, fuel is introduced into the mixing chamber at substantially the same axial position with respect to the opening as in the first operation state and at a second angle with respect to the axial direction of the mixing chamber.
摘要:
Method for checking the leakproffness of safety valves. Method for testing the leadkproofness of two controllable valves (V1, V2), wherein the vales are arranged at opposite ends of a test volume (10). An inlet pressure pe is present upstream of the test volume, in front of valve V1, and an outlet pressure pa is present downstream of the test volume, behind the valve V2. A control device controls the valves to open and close, and the control device is coupled to at least two pressure switches (26, 27) which are both operatively connected to the test volume (10) in order to monitor the pressure. The first pressure switch is set to a first triggering threshold d1, wherein d1=pe/x, where x>3. The second pressure switch is set to a second triggering threshold d2, wherein d2=pe(1−1/x). A valve is controlled in order to open the valve for a period of time tL1 and then to close said valve. The process then waits for a measurement period tM1 and a first pressure switch is checked. The second valve is then opened and closed again and the second pressure switch is checked. The functionality of the valves is indicated if the method has not been aborted owing to a pressure switch being triggered.
摘要:
Method for checking the leakproffness of safety valves. Method for testing the leadkproofness of two controllable valves (V1, V2), wherein the vales are arranged at opposite ends of a test volume (10). An inlet pressure pe is present upstream of the test volume, in front of valve V1, and an outlet pressure pa is present downstream of the test volume, behind the valve V2. A control device controls the valves to open and close, and the control device is coupled to at least two pressure switches (26, 27) which are both operatively connected to the test volume (10) in order to monitor the pressure. The first pressure switch is set to a first triggering threshold d1, wherein d1=pe/x, where x>3. The second pressure switch is set to a second triggering threshold d2, wherein d2=pe(1−1/x). A valve is controlled in order to open the valve for a period of time tL1 and then to close said valve. The process then waits for a measurement period tM1 and a first pressure switch is checked. The second valve is then opened and closed again and the second pressure switch is checked. The functionality of the valves is indicated if the method has not been aborted owing to a pressure switch being triggered.
摘要:
The invention relates to a method for determining the gas quality of a sample gas mixed at least in part with biogas, having the main components CH4, CO2, N2, O2, H2, proceeding from a spectrum of the sample gas determined by means of infrared-spectroscopy measurement methods, under operating conditions, from which the mole ratios of the sample gas are determined by means of correlative methods, and converted to characteristic variables of the gas quality. In this connection, the optical absorption of methane CH4 and carbon dioxide CO2 and the heat conductivity λ of the sample gas are measured, the mole ratio xCH4 is determined from the absorption of the CH4, the mole ratio xCO2 is determined from the absorption of the CO2, the mole ratios of nitrogen xN2, of oxygen xO2 and of hydrogen xH2 that are not detected optically are determined from the mole ratios xCH4, xCO2 and the heat conductivity λ, by means of a correlation calculation λ=F(xCH4,xCO2,xN2,xO2,xH2), whereupon characteristic parameters of the sample gas are calculated from the mole ratios obtained in this way.
摘要:
The invention relates to a method for determining the gas quality of a sample gas having the main components H2, CO, CO2, N2, CH4, proceeding from a spectrum of the sample gas determined by means of infrared-spectroscopy measurement methods, from which the mole fractions of the sample gas are determined by means of correlative methods, and converted into characteristic variables of the gas quality. In this connection, the optical absorption of carbon monoxide CO, carbon dioxide CO2, methane CH4 and the heat conductivity λ of the sample gas are measured, the mole fraction xCO is determined from the absorption of the CO, the mole fraction xCO2 is determined from the absorption of the CO2, and the mole fraction xCH4 is determined from the absorption of the CH4, the optically not detected mole fractions of nitrogen xN2 and of hydrogen xH2 are determined from the mole fractions xCO, xCO2 xCH4 and the heat conductivity λ, by means of a correlation equation λ=F(xH2,xCO,xCO2,xN2,xCH4), whereupon characteristic parameters of the sample gas are calculated from the mole fractions obtained in this manner.
摘要翻译:本发明涉及一种用于确定从通过红外光谱测量方法确定的样品气体光谱进行的具有主要组分H 2,CO,CO 2,N 2,CH 4的样品气体的气体质量的方法, 通过相关方法确定样品气体的摩尔分数,并将其转化为气体质量的特征变量。 在这方面,测量一氧化碳CO,二氧化碳CO 2,甲烷CH 4的光吸收和样品气体的热导率λ,摩尔分数xCO由CO的吸收确定,摩尔分数xCO 2由 CO 2的吸收和摩尔分数xCH4由CH 4的吸收确定,光学上未检测到的氮xN 2和氢x H 2的摩尔分数由摩尔分数xCO,xCO 2 x CH 4和导热系数λ由 相关方程式的手段λ= F(xH2,xCO,xCO2,xN2,xCH4),由此以这种方式获得的摩尔分数计算样品气体的特征参数。
摘要:
The invention relates to a radiant-heating device for heating an industrial furnace using radiated heat. A first burner unit (1) comprises a first burner (2), which heats an air mixture by burning a fuel (6), a first air supplier (60), via which the first burner (2) is supplied with fresh air, and a first elongated radiant-heating pipe (20), which includes a rearward end (20a) connected with the first burner (2) and a forward end (20b) spaced from the rearward end (20a) and in which the hot exhaust gas generated by the first burner (2) flows from the rearward end (20a) to the forward end (20b) of the first radiant-heating pipe (20) and supplies heat energy along this path to the pipe wall of the first radiant-heating pipe (20). A second burner unit (1′) is constructed like the first burner unit (1). A first connection element (50) connects the rearward end (20a) of the first radiant-heating pipe (20) with the forward end (20b′) of the second radiant-heating pipe (20′), so that at least a portion of the exhaust gas generated in the second radiant-heating pipe (20′) is conducted to the first burner (2) and is burned again using the first burner. A second connection element (50′) connects the rearward end (20a′) of the second radiant-heating pipe (20′) with the forward end (20b) of the first radiant-heating pipe (20), so that at least a portion of the exhaust gas generated in the first radiant-heating pipe (20) is conducted to the second burner (2) and is burned again using the second burner.