45results about How to "Energy utilization is reasonable" patented technology

The invention discloses a pump-free type thermal spray refrigerating cycle method and device. After working fluids are pressurized and conveyed through high-temperature high-pressure refrigerant steam generated by a generator, working fluids to be conveyed in next circulation are pressurized in advance, energy of the high-temperature high-pressure refrigerant steam is fully used, and the COP of a system is improved. The device comprises the generator, a throttling element, an evaporator, an ejector, a condenser and a liquid storage device. The liquid storage device comprises at least two matched liquid storage tanks in parallel connection, each liquid storage tank is communicated with the generator, the condenser and other matched liquid storage tanks through a control valve, the ejector is sequentially connected with the condenser, the throttling element and the evaporator in series to form a loop, and the condenser is sequentially connected with the liquid storage device and the generator in series to form a loop. By means of the device, energy utilization of the system is more economical and reasonable, the thermal load of cooling water is reduced, pump-free circulating of the system is achieved, the number of moving parts is reduced, and operation performance is more stable and reliable.

The invention discloses a water quenching and separating treatment method for anode carbon slime in aluminum electrolysis, and belongs to the technical field of aluminum electrolysis. The water quenching and separating treatment method comprises the steps of carrying out water quenching on the thermal-state carbon slime, classifying and sorting the water-quenched carbon slime, dehydrating the water-quenched carbon slime through a centrifugal dehydrator, carrying out wet grinding on the carbon slime and sorting the carbon slime through a flotation machine, finally carbon-rich products and electrolyte-rich products are obtained, the carbon-rich products can be used for producing carbon products, and the electrolyte-rich products can be purified and then used in the aluminum electrolysis process. According to the invention, the coarse crushing step and the fine crushing step can be simplified, and therefore the procedures are simplified, dust pollution in the crushing steps and the ore grinding step is greatly reduced, and the energy can be utilized more reasonably. The water quenching and separating treatment method can be effectively combined with the existing wet grinding technology, the existing flotation technology and the existing fluorine-containing water treatment technology.

The invention relates to a once-through boiler, steam turbine and power grid coordinated control method for primary frequency modulation analysis. The invention aims to solve a problem that characteristics of the boiler are not considered in the prior art so that great resistance is brought to participation of a high-capacity high-parameter thermal power generation unit in primary frequency modulation and safe and stable running of an electric power system is not facilitated. The method comprises the steps of firstly, performing once-through boiler energy state analysis so as to determine the once-through boiler energy state; secondly, performing power grid energy state analysis so as to determine the power grid energy state; and thirdly, determining a grid source energy coordinated control strategy according to the once-through boiler energy state determined in the step one and the power grid energy state determined in the step two. The once-through boiler, steam turbine and power grid coordinated control method enables the thermal power generation unit to not only sufficiently participate in frequency modulation, but also be operate safely and efficiently under the premise of meeting a requirement of safe running of a power grid. The once-through boiler, steam turbine and power grid coordinated control method is applied to the field of primary frequency modulation analysis.

The invention belongs to the technical field of melamine preparation, and relates to a system and a method for producing melamine. The system comprises a fluidized bed reactor, wherein mixed gas generated by the fluidized bed reactor goes into a hot gas cooler, a hot gas filter, a crystallizer, a catcher, a urea scrubber, a gas-liquid separator and a demister successively; the demister is connected with the crystallizer; a molten salt bath is successively connected with a molten salt furnace and the fluidized bed reactor to provide a heat transfer medium; a carrier gas preheater is connected with the fluidized bed reactor and the molten salt bath; molten salt enters the molten salt furnace, the fluidized bed reactor and the carrier gas preheater successively from the molten salt bath and then returns to the molten salt bath; granular urea outside a boundary area enters the lower part of the urea scrubber; part of molten urea flowing from the bottom of the urea scrubber partly enters the upper and middle parts of the urea scrubber through a circulating pump and the rest enters the fluidized bed reactor. The urea is added in a granule form of during the production of melamine, and reduces the energy consumption of the molten urea with less environmental pollution.

The invention provides a technology for preparing natural gas or liquefied natural gas from Lurgi and coke oven gas mixture. The technology comprises at least a first-stage multifunctional catalytic reaction, and parts of sulfur-tolerant shift conversion and sulfur-tolerant methanation reactions and an organic sulfur hydrogenation conversion reaction are carried out in the multifunctional reaction; a gas from a multifunctional reactor undergoes heat exchange and high pressure superheated steam recovery, undergoes selective oxidation to remove hydrogen sulfide, undergoes transformation adsorption to remove carbon dioxide, and enters a sulfur-intolerant methanation reactor (heat insulation or isothermal reaction) to undergo a CO methanation reaction, and a gas from the outlet of the sulfur-intolerant methanation reactor is finished natural gas or is sent o a low temperature cold box to liquefy methanol in order to form liquefied natural gas, wherein the CO content is smaller than 0.1%, the CO2 content is smaller than 0.5%, and the CH4 content is greater than 97%.

The invention relates to the crude oil separation field, and especially relates to a crude oil stripping stabilization device. The crude oil stripping stabilization device mainly comprises a heat exchanger, a stabilization tower, a compressor, a condenser, a three-phase separator, a tower bottom oil pump, a reboiling oil pump and a heating furnace, wherein the heat exchanger is connected with the stabilization tower, the top of the stabilization tower is connected with the compressor, the compressor is connected with the three-phase separator through the condenser, the separator is provided with a water outlet, a light oil outlet and a gas outlet, and the bottom of the stabilization tower is connected with the heat exchanger through the tower bottom oil pump. The crude oil stripping stabilization device has the advantages of simple crude oil stripping stabilization process flow, easy operation management, reasonable energy utilization, low device investment and operation cost, resource saving, and production efficiency improvement.

The invention relates to the field of crude oil separation, in particular to a heating, flashing and separating device. The heating, flashing and separating device mainly comprises a heat exchanger, a heater, a stabilizer, a condenser, a condensate separator, an oil pump, a secondary cylinder and a fractionating column, wherein the heat exchanger is connected with the heater; the heater is connected with the stabilizer; the oil pump is arranged between the stabilizer and the heat exchanger; the stabilizer is connected with the condensate separator through the condenser; and the condensate separator is respectively connected with a water outlet, the secondary cylinder and the fractionating column. The invention has the advantages that a process flow of heating, flashing and separating crude oil is simple and easy to operate and manage, energy is utilized reasonably, device investment and operating cost are low, resources are saved, and the production efficiency is improved.

The invention belongs to the field of petrochemical engineering, and particularly discloses an oil-gas separation and recovery device and a method thereof. According to the oil-gas separation and recovery device and the method thereof, gasoline and C4 and below components are separated in advance before light hydrocarbon separation, so that in the follow-up process, gasoline does not need to be adopted for absorbing liquefied gas components, consumption of absorbent circulation is saved, and meanwhile, the tower top material flow of a light hydrocarbon-light gasoline separation tower is desulfurized, so that the material flow does not contain H2S in the light hydrocarbon separation process, the material requirement of a light hydrocarbon separation and recovery system is reduced, the risk possibly caused by H2S leakage is reduced, and the safety of the whole process is ensured; meanwhile, the method is simple in technological process, mild in operation condition and low in energy consumption.

The invention relates to the field of oxidized tail gas energy recovery method during cyclohexanone oxidation production and provides an oxidized tail gas energy recovery method during cyclohexanone oxidation production in order to solve the problems that an existing cyclohexanone device is high in energy consumption and unreasonable in energy utilization. The method comprises the steps of conducting catalytic combustion on organic matter such as cyclohexane, cyclohexanone and cyclohexanol with the total content of 10-3000 ppm to form carbon dioxide and water; feeding treated exhaust gas intoan expansion machine; converting heat energy generated during the catalytic treatment process and the pressure of an expansion power generator unit into electric energy through one-time expansion, anddirectly emptying the exhaust gas subjected to energy recovery from an outlet of the expansion machine. According to the oxidized tail gas energy recovery method during cyclohexanone oxidation production, the device is simple in structure, stable in operation, reasonable in energy utilization and high in economic benefit, extra equipment investment is avoided, consumption of low-pressure steam isreduced, and the problems existing in the prior art are solved well.