9 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 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.

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