Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A bypass valve, positioned on a bypass pipeline connecting the supply pipeline to the return pipeline, may be adjusted to a position sufficient to maintain temperature of the flow of gas above a threshold based on the inlet and outlet temperature.

A process and apparatus are provided for reducing content of tar in a tar containing syngas. The process includes contacting the tar containing syngas with a molecular oxygen containing gas in a first reaction zone to produce a gas mixture. The gas mixture is passed through a heat treatment zone maintained at a temperature between about 900 C. to about 2000 C. for a contact time of about 0.5 to about 5 seconds. In this aspect, at least a portion of the tar undergoes at least partial oxidation and/or cracking to produce a hot syngas.

An air conditioning system includes a compressor and a refrigerant line. A power generating unit may be disposed along the refrigerant line to generate power from the heat in the refrigerant line while helping to convert hot compressed refrigerant gas into a hot high-pressure refrigerant liquid. An air conditioning system may also involve using a cooling chamber to use refrigerant to cool a heat exchange medium which is then used in a cooling coil to condition air.

A process for reducing pressure of a vapor stream used for reducing a temperature or pressure in a reactor. A pressure of a vapor stream is reduced with a turbine to provide a lower pressure vapor stream. The vapor stream rotates a turbine wheel within the turbine. The turbine wheel is configured to transmit rotational movement to an electrical generator. Thus, electricity is generated with the turbine. The lower pressure vapor stream is injected into a reactor and reduces a temperature in the reactor or reduces a partial pressure of a hydrocarbon vapor in the reactor.

A method of steam cracking includes using a steam cracking arrangement that has a fired cracking furnace, a quench cooling train, and rotating equipment at least partly driven by electric energy. A process gas stream is passed through the furnace and the cooling train. A steam generation arrangement, operated in thermal association with the cracking arrangement, results in superheated high pressure steam at a first pressure level of 30 and 175 bar absolute pressure and at a first temperature level. No steam at a higher temperature level than the first is generated. The superheated high pressure steam is partially adiabatically and isenthalpically expanded to a second lower pressure level. The first temperature level is selected such that each intermediate temperature level reached at intermediate pressure levels of more than 20 bar during the adiabatic and isenthalpic expansion process is between 5 and 120 K above the dew point of steam.

A ceramic ferrule assembly is provided, including a head including at least one tab protruding outwardly from an inner peripheral surface thereof, and a stem having an annular flange about an outer peripheral surface thereof and having at least one slot formed therein, the slot being adapted to receive the tab and retain the tab in a stationary position when the stem is rotated relative the head, whereby the at least one tab and the at least one slot mechanically engage one another to secure the ferrule stem and ferrule head to prevent axial disassociation from one another without counter rotation.

An integrated combustion device power saving system includes: a hydrogen generation device, for generating a hydrogen-rich gas; a combustion device, for receiving the hydrogen-rich gas for combustion and generating heat energy and flue gas; a smoke distributing device, for distributing flue gas to the hydrogen generation device or atmosphere; a hydrogen-generation feed preheating device, for capturing waste heat of the flue gas from the smoke distributing device to preheat a hydrogen-generation feed to be used in the hydrogen generation device; and a power generating device, for receiving the flue gas from the hydrogen-generation feed preheating device while recycling waste heat of the flue gas to generate power to at least one of the hydrogen generation device or the combustion device.

The present invention provides a process for power recovery in a process for producing ethylene, comprising steam cracking a hydrocarbon feed to produce a cracked gas product; cooling the cracked gas product by indirect heat exchange with high pressure liquid water to obtain cooled cracked gas product while evaporating the high pressure liquid water to high pressure steam; expanding the high pressure steam in a first steam expansion turbine to produce power and to obtain medium pressure steam; heating at least part of the medium pressure steam to increase the temperature of the medium pressure steam by passing the medium pressure steam through a convection zone of the cracking furnace and retrieving reheated medium pressure steam from the convection zone; expanding at least part of the reheated medium pressure steam in a second steam expansion turbine to produce power and to obtain low pressure steam.

A distributed Biogas Combined Heat and Power (CHP) Generator can provide automatically hot water and electricity for local applications. Since biogas is produced by an anaerobic digester from human, animal, kitchen and agriculture's wastes, it is a short term recycled product from the photosynthesis of CO.sub.2, and has a net zero carbon emission.

The sulfur compounds in the biogas can be removed by the following steps: (1). converting all sulfur compounds into H.sub.2S by the hydrogen produced from the biogas over Pt group metal catalysts; (2). adsorbing the H.sub.2S at high temperature by the regenerable Pt group metal catalyst and adsorbents.

The desulfurized biogas is further converted by an ATR/CPO reformer or a steam generating reformer to produce various reformates, which can be connected to a downstream IC engine/gas turbine, and/or a steam turbine to drive electric generators for generating electricity. The hot reformate and the exhaust gases can be cooled in heat exchangers to produce hot water/hot air.

An Organic Rankine Cycle (ORC) device and method for transforming waste heat from a heat source containing compressed gas into mechanical energy. The ORC includes a closed circuit containing a two-phase working fluid, the circuit including a liquid pump for circulating the working fluid in the circuit consecutively through an evaporator which is in thermal contact with the heat source; through an expander like a turbine for transforming the thermal energy of the working fluid into mechanical energy; and through a condenser which is in thermal contact with a cooling element. The ORC determines the mechanical energy generated by the expander. A control device regulates the fraction of the working fluid entering the expander based on the determined mechanical energy such that the mechanical energy generated by the expander is maximum.