A composite power generating device of the present invention includes an engine (110), a first flow line (121), a turbocharger (130), a second flow line (122), a third flow line (123), a compressor (211), a first medium line (221), a medium turbine (212), a second medium line (222), a working medium cooler (213), a recuperator (215), a power generating unit (214), a cross-line (233), a first heat exchanger (251), a second heat exchanger (252), and a third heat exchanger (253).

A power pack for converting waste heat from exhaust gases of an internal combustion engine to electrical energy includes a working fluid loop fluidly connecting an evaporator, an expander, a condenser and a pump. The power pack also includes a working fluid tank fluidly connected to the working fluid loop between an outlet of the condenser and an inlet of the pump. The working fluid tank has a single working fluid port operable to receive working fluid from the outlet of the condenser and to supply working fluid to the inlet of the pump. The power pack also includes a power pack control unit in communication with the working fluid tank. The power pack control unit is operable to change a pressure of the working fluid in the working fluid loop at the inlet of the pump by changing the pressure of the working fluid in the working fluid tank.

Operating coal fired energy systems. A method of operating a coal fired energy system comprises operating a coal fired steam generator comprising a coal feed system and a main air feed system to provide a coal-air mixture as a heating source for a boiler for generating steam. The method includes operating an auxiliary air compression system comprising a fueled engine coupled to a compressor for providing an auxiliary supply of compressed air to a soot blower of the coal-fired steam generator. The method comprises injecting the auxiliary supply of compressed air along walls of the boiler to remove soot and ash buildup from the boiler.

A chemical plant and operating method therefor; the chemical plant comprises a steam turbine having a shaft, a first pressure turbine stage and a second pressure turbine stage, each being arranged on the shaft and being connected in series in terms of the steam process; steam for driving the steam turbine is obtained from a reactor plant, said reactor plant producing a hydrogen-containing substance from a carbon-containing energy carrier stream; the steam is heated in an overheating step before being supplied to the second pressure turbine stage; the steam turbine has a third pressure turbine stage which is arranged on the shaft and which is connected between the first pressure turbine stage and the second pressure turbine stage in terms of the steam process; and the steam passes through the overheating step after exiting the third pressure turbine stage.

Provided is a new binary power generation system that, in the binary power generation system using exhaust gas as a heating source, maximizes the power generation amount while considering the sulfuric acid dew point temperature of the exhaust gas. In this binary power generation system, corrosion due to sulfuric acid is prevented. Provided is a binary power generation system including a binary power generation apparatus that generates power by vaporizing a power generation medium using heat of exhaust gas output from a drive apparatus, wherein the binary power generation apparatus includes a control section that controls a mass flow rate of the power generation medium based on at least a sulfur concentration of the exhaust gas.

A filter backwashing unit is disposed in a path in which process gas flows to remove at least a part of trapped dust included in a process gas by backwashing an element of a filter device that traps the dust when a process gas passes. The filter backwashing unit includes a gas injection device disposed downstream of the element in a flow direction of a process gas to inject backwashing gas toward the element from downstream; a parameter detection device configured to detect a parameter used for determination of a state of dust adhering to the element; and a control device configured to estimate a thickness of dust deposited on a surface of the element upstream of a process gas based on a result of the detection, and determine an interval at which the element is backwashed based on the estimated thickness of the dust.

Certain aspects of natural gas liquid fractionation plant waste heat conversion to simultaneous power, cooling and potable water using integrated mono-refrigerant triple cycle and modified MED system can be implemented as a system that includes two heating fluid circuits thermally coupled to multiple heat sources of a NGL fractionation plant. An integrated triple cycle system, which includes an organic Rankine cycle (ORC), a refrigeration cycle and an ejector refrigeration cycle, is thermally coupled to the first heating fluid circuit. A MED system, configured to produce potable water, thermally coupled to the second heating fluid circuit. The system includes a control system configured to actuate control valves to selectively thermally couple the heating fluid circuits to portions of the heat sources of the NGL fractionation plant.

An improved method and system of carbon sequestration of a pyrolysis piston engine power system is provided. The system includes a pyrolysis piston engine for generating power and exhaust gas and a water cooling and separation unit which receives the exhaust gas and cools and removes water from the exhaust gas to create C02 gas supply. The system also includes a mixing pressure vessel which receives at least a portion of the C02 gas supply from the water cooling and separation unit and mixes the C02 gas supply with oxygen to create a working fluid to be provided to the piston engine and an oxygen generator for providing oxygen to the mixing pressure vessel. The system also includes a pyrolysis interface for inputting byproducts from a pyrolysis system, wherein the pyrolysis interface comprises a pyrolysis gas interface and a pyrolysis gas/oil interface.

Processes for controlling at least one process condition of a chemical processing unit with a turbine. In the processes, a flow of a fluid is adjusted with a turbine in order to provide the fluid with a flow associated with at least one process condition of a chemical processing unit. The turbine wheel is rotated within the turbine, and the turbine wheel is configured to transmit rotational movement to an electrical generator. The resistance of the turbine is modulated and adjusts the flow of the fluid through the turbine. A response time of at least one steady state process condition to a new steady state process condition of at least 10% difference is at least one second to reach 50% of the difference between the at least one steady state process condition and the new steady state process condition after modulating the resistance of the turbine.

A fluidized bed boiler plant and a method of preheating combustion gas in a fluidized bed boiler plant. The boiler plant includes a furnace and a combustion gas channel, and a water-steam cycle including an evaporator section, a superheater section including a last superheater and a steam turbine, and a superheating path for conveying steam from the evaporator section via the superheater section to the steam turbine, and a first combustion gas preheater. The fluidized bed boiler plant includes a second combustion gas preheater, a steam extraction line attached in flow connection with the second combustion gas preheater and with the superheating path in a location upstream of the last superheater for conveying steam from the superheating path to the second combustion gas preheater.