12 results about "Wobbe index" patented technology

Present disclosure relates to process for increasing the purity and recovery of hydrogen product stream obtained from a dehydrogenation process. The dehydrogenated effluent stream is separated to obtain the net gas stream. The net gas stream is compressed in a hydrogen compressor section. Even after compressing the net gas, traces of toluene are still present in the gas phase. Applicants have found to recover these toluene traces, the compressed gas from the hydrogen compressor section is chilled in a vapor economizer followed by a chiller to produce a chilled stream at a temperature of from about -27°C to about 17°C. This process also helps maintain the Wobbe Index of the hydrogen product stream in the range of about 44 to about 49 MJ / m3. In another embodiment, the compressed net gas stream from the hydrogen compressor section is adsorbed in an adsorption unit to separate hydrogen product stream from the recycle gas stream, wherein the recycle gas stream is completely recycled to the hydrogen compressor.

The invention discloses a fuel monitoring system suitable for a gas turbine and a control method, and relates to the technical field of gas turbines.The control method comprises the steps that a fuel real-time analyzer analyzes fuel components, a fuel heat value, a fuel wobbe index and a flow change condition based on gas information collected by a flowmeter and a plurality of fuel sampling pipelines; the analyzed information is transmitted to the gas turbine control system in real time; and the gas turbine control system performs logical operation processing according to the received information, diagnoses abnormal information, and regulates and controls operation parameters of the gas turbine in real time based on different abnormal information. A plurality of fuel sampling measuring points are arranged on a natural gas pipeline outside a production area, redundant configuration is achieved, fuel components are monitored in real time, the fuel calorific value, the wobbe index and the change of gas content components in fuel are analyzed, the analysis result is transmitted into a gas turbine control system to participate in logical operation, the fuel condition is diagnosed, and the fuel quality is improved. When an abnormal phenomenon occurs, corresponding measures are taken to prevent abnormal tripping of the gas turbine and guarantee normal operation of a power plant.

The invention relates in particular to a method for heating a semi-finished steel product (9) in a heating furnace (1) comprising at least two consecutive heating sections (10, 20, 30, 40), comprising feeding two respective fuel gas streams (F1, F2, F3, F4) having respective Wobbe indexes (Wob1, Wob2, Wob3, Wob4) to said two heating sections (10, 20, 30, 40), said Wobbe indexes (Wob1, Wob2, Wob3, Wob4) being different from each other.

Device for the central recording and transmission of gas quality parameters, in particular the Wobbe index, for the operation of gas consumption appliances such as thermal baths, gas boilers and gas meters, the device comprising: - a measuring unit for determining the gas quality parameters, - a communication interface for transmitting the measured parameters in real time or periodically to end devices, - Control mechanisms in the terminal devices that automatically adjust operating parameters such as the air-gas mixture ratio based on the received parameters.

The present invention relates in particular to a method for heating a steel semi-finished product (9) in a heating furnace (1), wherein the heating furnace comprises at least two consecutive heating sections (10, 20, 30, 40), and the method comprises supplying two respective fuel gas streams (F1, F2, F3, F4) having different Wobbe indices (Wob1, Wob2, Wob3, Wob4) to the two heating sections (10, 20, 30, 40).

The present disclosure relates to systems and methods for blending multiple fuels. A method (500) of blending at least two fuels (105), the method (500) comprising: providing at least two fuels (105) to a spiral static mixer (160) via a fuel supply system (300), the fuel supply system (300) comprising a fuel supply circuit (102) for each of the at least two fuels (105); mixing the at least two fuels (105) via the plurality of helical structures (164) of the helical static mixer (160) to form a fuel mixture (166); determining, via one or more sensors (110, 112, 114, 146), a measured interchangeability index of the fuel mixture (166), the interchangeability index being one of a measured Warburg index of the fuel mixture (166) or a measured modified Warburg index of the fuel mixture (166); comparing the measured interchangeability index with a predetermined interchangeability index; adjusting, via the fuel supply system (300), one or more parameters of at least one of the at least two fuels (105) based on the comparison between the measured interchangeability index and the predetermined interchangeability index; and providing the fuel mixture (166) to the combustion system (302).

To provide a system and method for blending multiple fuels.SOLUTION: A method (500) includes: supplying at least two fuels to a helical static mixer via a fuel supply system, the fuel supply system including a fuel supply circuit for each of the fuels; mixing, via a plurality of helical structures of the helical static mixer, the fuels to form a fuel mixture; determining, via one or a plurality of sensors, a measured interchangeability index of the fuel mixture, the interchangeability index being one of a measured wobbe index of the fuel mixture or measured corrected wobbe index of the fuel mixture; comparing the measured interchangeability index to a predetermined interchangeability index; adjusting, via the fuel supply system, at least one of the parameters of the fuels based on the comparison between the measured interchangeability index and the predetermined interchangeability index; and supplying the fuel mixture to a combustion system.SELECTED DRAWING: Figure 14

This invention discloses a comprehensive analysis method and apparatus for the combustion characteristics of hydrogen-blended natural gas pipelines, relating to the fields of gas transmission and distribution and comprehensive utilization of hydrogen energy. Addressing the lack of a systematic method in existing technologies for simultaneously predicting the calorific value, Wobbe index, and combustion potential of hydrogen-blended natural gas, this invention constructs an integrated computational model encompassing thermodynamics, interchangeability, and combustion kinetics, employing a modular design: it calculates the higher and lower calorific values ​​of the mixed gas using a weighted average method, calculates the Wobbe index based on relative density and internationally accepted definitions, and innovatively quantifies combustion potential using a semi-empirical model; it also cross-compares with national standards such as GB17820, and uses multi-indicator collaborative decision-making to determine the feasibility of the proposed scheme. This invention overcomes the shortcomings of the three-dimensional comprehensive evaluation of hydrogen-blended natural gas, offering accurate calculations, strong compliance, and the ability to rapidly generate hydrogen blending ratio-combustion characteristic maps, providing technical support for the design of hydrogen-blended transportation projects, operational safety assessments, and the formulation of relevant national standards.

The present disclosure relates to systems and methods for blending multiple fuels. A method (500) of blending at least two fuels (105), the method comprising: providing at least two fuels (105) to an injector (206) via a fuel supply system (100), the fuel supply system (100) comprising a fuel supply circuit (102) for each of the at least two fuels (105); mixing the at least two fuels (105) via a diffuser (214) of the injector (206) to form a fuel mixture (166); determining, via one or more sensors (110, 112, 114, 146), a measured interchangeability index of the fuel mixture (166), the interchangeability index being one of a measured Warburg index of the fuel mixture (166) or a measured modified Warburg index of the fuel mixture (166); comparing the measured interchangeability index with a predetermined interchangeability index; adjusting, via the fuel supply system (100), one or more parameters of at least one of the at least two fuels (105) based on the comparison between the measured interchangeability index and the predetermined interchangeability index; and providing the fuel mixture (166) to the combustion system (302).

Present disclosure relates to process for increasing the purity and recovery of hydrogen product stream obtained from a dehydrogenation process. The dehydrogenated effluent stream is separated to obtain the net gas stream. The net gas stream is compressed in a hydrogen compressor section. Even after compressing the net gas, traces of toluene are still present in the gas phase. Applicants have found to recover these toluene traces, the compressed gas from the hydrogen compressor section is chilled in a vapor economizer followed by a chiller to produce a chilled stream at a temperature of from about −27° C. to about 17° C. This process also helps maintain the Wobbe Index of the hydrogen product stream in the range of about 44 to about 49 MJ / m3. In another embodiment, the compressed net gas stream from the hydrogen compressor section is adsorbed in an adsorption unit to separate hydrogen product stream from the recycle gas stream, wherein the recycle gas stream is completely recycled to the hydrogen compressor.

To provide a system and method for blending multiple fuels.SOLUTION: A method of blending at least two fuels includes: supplying at least two fuels to an eductor via a fuel supply system, the fuel supply system including a fuel supply circuit for each fuel of the at least two fuels; mixing, via a diffuser of the eductor, the at least two fuels to form a fuel mixture; determining, via one or a plurality of sensors, a measured interchangeability index of the fuel mixture, the interchangeability index being one of measured corrected wobbe indices of the fuel mixture; comparing the measured interchangeability index to a predetermined interchangeability index; adjusting, via the fuel supply system, at least one or a plurality of parameters on the basis of the comparison between the measured interchangeability index and the predetermined interchangeability index; and supplying the fuel mixture to a combustion system.SELECTED DRAWING: Figure 14

The present invention relates to the technical field of natural gas pipeline networks, and in particular to a method, a system, and an electronic device for determining the component distribution of a steady-state natural gas pipeline network. The method includes: obtaining the gas components of each gas source point in the steady-state natural gas pipeline network; constructing a calculation model for the component distribution of the steady-state natural gas pipeline network; and calculating the gas components at any position in the steady-state natural gas pipeline network according to the gas components of each gas source point and the component distribution calculation model. It can calculate the gas components at any position in the entire steady-state natural gas pipeline network, and then can determine the changes in the calorific value and Wobbe index of the fluid in the steady-state natural gas pipeline network, ensuring the stable gas use quality of downstream users.