3898results about "Steam generation using hot heat carriers" patented technology

This invention is related to so-called combined cycle co-generation installations, and it addresses present concerns of the industry. Among these, combustion stability, corrosion (due to large water content in the flue gases), large heat transfer areas, and the like. In some embodiments, an additional heat exchanger is added to heat combustion air with a portion of the exhaust gases resulting from an engine, preferably a gas turbine. As a result, the efficiency of the cycle will improve, the oxidant will be enriched by above 50% oxygen, the combustion process will be enhanced, and the dimensions of the boiler may be reduced. It is considered that the combustion air will require between 10% and 80% of the total flue gas volume, more preferably between 20% and 40%. This is the portion of the flue gases sent through the heat exchanger. A control system designed to optimize the flow of the different streams is also presented. Other inventive embodiments forego heat exchanges in lieu of precise control of two flows of exhaust gas, with preferred addition of additional oxidant to the boiler bumers.

A sound attenuating duct unit suitable for connection to an outlet of a gas turbine and an improved heat recovery apparatus for use with such a turbine are disclosed. The former unit includes a duct housing having exterior sides, an air inlet at one end and first and second air outlets. Interior walls define a main airflow passageway extending from the air inlet to both of the outlets. Sound absorbing and heat insulation material is arranged between these walls and the exterior sides. Sound attenuating members are mounted in the passageway and a diverter damper is mounted in the housing and is able to direct air flow to either one of the air outlets. The sound attenuating members are mounted between the diverter damper and the air inlet. The heat recovery apparatus includes a series of aerodynamic diffusers mounted in a housing adjacent an air flow inlet connectable to the gas turbine.

An evaporation based method for generation of high pressure steam from produced water in the heavy oil production industry. De-oiled produced water is processed through a high pH/high pressure evaporator driven by a commercial watertube boiler. The vapor produced by the evaporator is suitable for the steam assisted gravity drainage (SAGD) method being utilized by heavy oil recovery installations, without the use of once through steam generators that require extensive chemical treatment, and without requiring atmospheric distillation, which requires high power consuming compressors. Evaporator blowdown may be further treated in a crystallizing evaporator to provide a zero liquid discharge (ZLD) system and, with most produced waters, at least 98% of the incoming produced water stream can be recovered in the form of high pressure steam.

A radiant syngas cooler used to contain and cool the synthesis gas produced by coal gasification processes employs radiant and convection surfaces in a specific arrangement to achieve a cost-effective, compact design.

A combined cycle power plant of the present invention is configured of a compressor; a combustor for combusting compressed air compressed by the compressor together with supplied fuel; a gas turbine driven by a combustion gas exhausted from the combustor; a heat recovery steam generator for recovering high temperature exhaust heat exhausted from the gas turbine; a steam turbine driven by steam obtained from the heat recovery steam generator; and an exhaust gas duct having an HRSG inlet duct that is provided between the gas turbine and the heat recovery steam generator and introduces an exhaust passage into the heat recovery steam generator, and a bypass stack that leads the exhaust gas outside, wherein the exhaust duct is configured of a damper, a damper drive for changing any of angle and opening of the damper, and a guide mechanism for preventing a vibration of the damper.

A Waste to Liquid Hydrocarbon Refinery System that transforms any municipal solid wastes and hazardous industrial wastes, Biomass or any carbon containing feedstock into synthetic hydrocarbon, particularly, but not exclusively, diesel and gasoline and/or electricity and co-generated heat, comprising three major subsystems: i) the Pyro-Electric Thermal Converter (PETC) (10) and Plasma Arc (PA) waste and biomass gasification subsystem (1); ii) the hydrocarbon synthesis subsystem (2); and iii) the electricity generation and heat co-generation subsystem (3).

The invention is about a submerged combustion method and the device; in details, it is a submerged combustion method and the device utilizing turbine heat engine principle. In the invention, turbine power combustion means is used and substituted conventional submerged combustion system that must equip air blowing means. The high temperature gases generated from the combustion within the turbine power combustion means will do works on turbine, which will drive the air compressor means of the turbine power combustion means to induce air for combustion, and will drive the second-time complete combustion of high temperature gases and the complement fuel, and then the gases will come out from water bottom against tank water pressure and carry out heat interchange with tank water. The turbine submerged combustion boiler device of the invention need not equip air blowing means additionally which would consume energy. So it has high energy efficiency and a simple system structure. And it has features of high heat interchange rate, stable long term heat efficiency, environmental protection, etc.

The invention relates to an ammonia desulfurization and denitrification dedusting method and device utilizing catalytic cracking regeneration flue gas, comprising the following steps: enabling high-temperature catalyst regeneration flue gas coming from a catalytic cracking unit and containing catalyst dust to firstly enter a waste heat boiler I, reducing the temperature of the flue gas to 280-430 DEG C, wherein the heat of the flue gas is externally supplied by steam produced by the waste heat boiler I; enabling flue gas at temperature of 280-430 DEG C to enter a denitrification device for denitrification and enter a waste heat boiler II through an outlet flue after sufficiently reacting on the surface of a denitrification catalyst in a denitrification reactor; removing sulfur dioxide, nitric oxide and byproduct ammonium sulfate by taking ammonia as a reactant, and removing catalyst dust in the regeneration flue gas to achieve clean gas up-to-standard release; the three waste free release purifying method can be applied to catalytic cracking catalyst regeneration flue gas treatment in oil refining.

The invention discloses a novel process for pyrolysis of solid wastes. According to the existing pyrolysis technology, the solid wastes with low calorific values and high moisture content are difficult to treat, and effects of being completely harmless, reduced and recycled cannot be achieved. The novel process provided by the invention comprises the following steps of: uniformly crushing the solid wastes by a crushing system and conveying the crushed solid wastes to a drying system to be dried; carrying out the pyrolysis in a pyrolysis system and treating a pyrolyzed product by a re-burning system to provide energy needed by the pyrolysis system; conveying high-temperature smoke into a residual heat boiler to generate saturated vapor with a temperature which is higher than 1000 DEG C; carrying out heat exchange on the vapor by a vapor-air heat exchanger; after raising the temperature of normal-temperature air, conveying the air into the vapor-air heat exchanger to carry out the heat exchange with output smoke of the residual heat boiler; conveying the hot air into the pyrolysis system and carrying out processes of cooling combustion smoke, de-acidifying and removing dust on the smoke of the residual heat boiler through an exhaust gas treatment system; receiving uncondensed gas in condensed odor vapor by the deodorization system, carrying out final treatment on the uncondensed gas and exhausting. According to the invention, the residual heat value of the high-moisture solid wastes is sufficiently utilized and the utilization is not limited by types of the solid wastes, so that the energy source and the operation cost are saved.

A coke oven includes an oven chamber, an uptake duct in fluid communication with the oven chamber, the uptake duct being configured to receive exhaust gases from the oven chamber, an uptake damper in fluid communication with the uptake duct, the uptake damper being positioned at any one of multiple positions, the uptake damper configured to control an oven draft, an actuator configured to alter the position of the uptake damper between the positions in response to a position instruction, a sensor configured to detect an operating condition of the coke oven, wherein the sensor includes one of a draft sensor, a temperature sensor configured to detect an uptake duct temperature or a sole flue temperature, and an oxygen sensor, and a controller being configured to provide the position instruction to the actuator in response to the operating condition detected by the sensor.

An apparatus and a method generate power and refrigeration from low-grade heat. The apparatus includes a heating module, a power generator module, an ejector, a heat exchanger, a condenser module, a low-temperature evaporator, a reservoir, a pressure pump and two direction controllable three-way valves. The heating module includes a heat source and a boiler. The power generator module includes an expansion turbine and a power generator. The condenser module includes a condenser and a cooling tower. The method is that the direction controllable three-way valves are operated to change the flow directions of the working fluid for executing a power generation and refrigeration mode, a power generation mode, a refrigeration mode or an idle mode.

The invention relates to a blast furnace slag heat recycle system and relative production, wherein it is formed by cooling-breaking, gas-slag heat exchanger, and left-heat boiler units; the slag outlet has cooling-braking unit which will cool the slag to the solidify point 1200-1300Deg. C, to be broken into the slag particles whose diameter is less than 100mm; the transmitter is connected to the gas-slag heat exchanger to heat the air to 700-800Deg. C; the slag will be cooled under 150Deg. C; the heated air will be transmitted to the left-heat boiler; the water of heating tube of boiler will adsorb the heat of gas, to generate the steam whose pressure at 0.3-0.4MPa and temperature at 260-350Deg. C. The invention can improve the energy recycle efficiency more than 70%, to reduce the energy consumption of steel production, reduce the consumption of cooling water, and reduce the environment pollution.

The invention relates to a method of complex utilization of the waste residue that from gold extraction with cyanidation. This invention belongs to the field of metallurgy and chemical technology. Firstly, the waste residue that from gold extraction with cyanidation is pretreated with acid. The floatation process is adopted here. The first step is to concentrate cuprum, plumbum, zincum and argentum; Secondly, collect 47%-52% of the high-grade sulfur and concentrate gold and argentums; Then roast the high-grade sulfur concentrate, the gas is utilized to produce acid, and the waste heat is utilized to produce electricity, and the waste residue is utilized to extract gold with cvanidation. After washing by water, the leavings which contains 62%-68% iron can be used as iron concentrate. Finally, produce slag brick with the refuse. The technology which could reclaim the elements, such as Fe, S, Cu, Pb, Zn, Au, Ag, complex utilizes the waste residue that from gold extraction with cyanidation. The invention takes full advantage of resource. The effect of integrated utilization of resource and the economic benefit are enhanced and the environmental pollution is lessened by this way.

Methods and systems for converting waste heat from cement plant into a usable form of energy are disclosed. The methods and systems make use of two heat source streams from the cement plant, a hot air stream and a flue gas stream, to fully vaporize and superheat a working fluid stream, which is then used to convert a portion of its heat to a usable form of energy. The methods and systems utilize sequential heat exchanges stages to heat the working fluid stream, first with the hot air stream or from a first heat transfer fluid stream heated by the hot air stream and second with the flue gas stream from a second heat transfer fluid stream heated by the hot air stream.

A reheat-and-regenerating type thermal power plant (A) using Rankine cycle has a water feed bypass (BW) which suppies high temperature fluid (28) produced in a large incineration plant (27) to a heat exchanger (29) and by which confluent feed water (Wg) resulting from the confluence of separated condensed-water (32), separated low temperature feed water (33), separated medium temperature feed water (34) and separated high temperature feed water (35) is supplied to a superheat conduction pipe (3a) through a heat exchanger conduction pipe (29a). The water feed bypass (BW) is installed separately from a feed water path (W), thus insuring an efficient use of the high temperature fluid (28) produced upon incinerating a huge amount of combustible wastes in the large incineration plant (27).