46results about How to "Improve energy grade" patented technology

The invention discloses a comprehensive sludge treating method based on hydrothermal carbonization and fast microwave pyrolysis. The method comprises two steps of hydrothermal carbonization and fast microwave pyrolysis of sludge. The hydrothermal carbonization is applied to pretreatment of the sludge at an earlier stage, and can be used for solving the difficulties of high moisture and low heating value of the sludge and improving the energy grade of the sludge from the sources; fast microwave pyrolysis is performed on the sludge carbon subjected to the hydrothermal carbonization, liquid fuel and combustible gas with better productivity can be obtained, and the residue solid cokes can be used as industrial raw materials, so that the energy source recycling with high efficiency and low pollution for the sludge is realized. The method has the advantages of high resource utilization degree, cleanness, environment protection, low operating cost and wide application prospect. Besides, the method is a method for fast treating the sludge.

The present invention provides a water source heat pump and a sludge anaerobic digestion integration method and the system thereof, belongs to the filed of saving energy and lowering the consumption by the sewage treatment plant. The method uses the water source heat pump for realizing the recovery of low-grade heat energy in the discharging water of the sewage plant. The sludge generated by the municipal sewage plant enters the anaerobic reactor and is heated by the hot water provided by the heat pump which extracts heat from the discharged water to react for generating marsh gas, and the marsh gas is used for drying the sludge or driving the aeration blast engine. The digested sludge passes a series of processes such as mechanical dehydration and anhydration to obtain the dewatered sludge which can be used as the high quality fertilizer or solid fuel. The method and the system can realize the stabilization of the sludge and set the stage for the subsequent reducing and resource disposing of the sludge, the configuration of water, heat and energy at the inner part of the sewage plant can be optimized and the whole energy consumption of the sewage plant can be reduced for above 20%.

The invention relates to a method for separating acetic acid from water by rectification of an acetic acid dehydrating tower, mainly solving the problems of high energy consumption, high equipment manufacture cost and high operation cost in a process of dehydrating acetic acid in the prior art. The method comprises the steps of: carrying out azeotropic distillation by adopting the acetic acid dehydrating tower for dehydrating, adopting water or cyclohexane in a heat pump circulation as a heat exchange medium, absorbing heat released by condensation of top discharged materials of the acetic acid dehydrating tower through a heat exchange medium in a closed heat pump process, raising the temperature after the heat exchange medium absorbs the heat of the top discharged materials and then compressed, desuperheating high-temperature overheat steam by a desuperheating device to form saturated steam, introducing into a kettle reboiler and exchanging heat with bottom discharged materials; throttling and decompressing the steam subjected to kettle heat exchange and then entering into a gas and liquid separation tank, enabling the separated liquid phase to a tower top condenser for exchanging heat, mixing the separated gas phase with gas at an outlet of the tower top condenser together to enter into a compressor for exchanging heat with a kettle again. According to the technical scheme, the problem is better solved, thus the invention can be applied to industrial production of separating the acetic acid from the water.

The invention provides an absorption and hydration coupling device and a method for separating ethylene and ethane in catalytic cracking dry gas or ethylene pyrolysis gas. The method is divided into two processes: the catalytic dry gas or the ethylene pyrolysis gas enters an absorption separation process; a high-purity C2 product is obtained through absorption, desorption and absorbent regeneration; C2 lean gas at the top of an absorption tower enters a hydration separation process; and then C2 gas recovered in hydration separation and virgin gas are merged and return to the absorption separation process. The absorption separation process and the hydrate separation process are combined; the advantages that the separation efficiency of an absorption method in a high concentration area is high, and the separation efficiency of a hydration separation method in a low concentration area is high are exerted; the solvent amount required by the absorption process is reduced; the defects that the hydration separation purity is not high and the separation efficiency is low are avoided; the purity of the obtained C2 product can reach 99.6%; and the C2 product can directly enter an ethylene tower. The method is suitable for separating the recovered C2 from the catalytic cracking dry gas or the ethylene pyrolysis gas, and is hopeful for substituting a cryogenic separation technology.

The invention provides a test method and device for half cell of fluid bed electrode direct carbon fuel cell. The method comprises the following steps: firstly, arranging a current collector and the mixture of carbon fuel and catalyst granules in a half cell; secondly, fixing a porous plate in a preset position, and sequentially adding an auxiliary electrode, a reference electrode and carbonate; then, introducing nitrogen gas into the half cell, heating the nitrogen gas to a preset reaction temperature, regulating the flow of the nitrogen gas, and introducing oxygen gas and carbon dioxide into the reference electrode to balance the gas; and finally, connecting to an external circuit to start experiment. The device for realizing the testing method is a half-cell reaction device and comprises a half-cell reactor and a gas preheater, two electric heating devices are respectively used for carrying out temperature control on the half-cell reactor and the gas preheater, and a rotatable support structure is used for supporting and fixing the half-cell reaction device and the electric heating devices and realizing the dumpage of molten carbonate in the half cell. By making full use of theadvantages of the fluid bed electrode and the direct carbon fuel cell, the performance of the cell can be improved.

The invention relates to a supercritical heat accumulating type organic Rankine cycle exhaust afterheat comprehensive utilization device which comprises a subcritical ORC module, a supercritical ORC module and a supercritical heat accumulating module. The supercritical heat accumulating type organic Rankine cycle exhaust afterheat comprehensive utilization device is mainly composed of a condenser, a working medium storage tank, an electromagnetic valve, a working medium pump, an expansion machine, a preheater, a postprocessor, a supercritical heat accumulator, an overheating evaporator, a control unit and the like. The exhaust temperature is stabilized within a certain range by the supercritical heat accumulator, then exhaust enters the postprocessor, and the postprocessor is made to keep high purification efficiency and lower pollution emission under most of the working conditions of an engine. Meanwhile, organic Rankine cycle is used for recovering the heat of the exhaust to improve the utilization rate of energy. The supercritical heat accumulating type organic Rankine cycle exhaust afterheat comprehensive utilization device has the advantages that the organic Rankine cycle is used for achieving low pollution emission and efficient energy utilization.

The invention relates to a method for separating acetic acid from water, which mainly solves the problems of high energy consumption and high operating cost in an acetic acid dehydration process in the prior art. In the invention, distillation and dehydration are carried out by pressurizing an acetic acid dehydration tower, water is used as a heat exchange medium in heat pump circulation, the heat released by condensing the discharged material at the top of the acetic acid dehydration tower is absorbed by a heat exchange medium in a closed heat pump process, the heat exchange medium after absorbing the energy of the discharged material at the top of the tower is compressed by a compressor so as to raise temperature, the high-temperature steam is used for carrying out heat exchange with the discharged material at the bottom of the tower in a tower kettle reboiler, the steam subjected to heat exchange in the tower kettle enters a gas-liquid separation tank after decompression, the separated liquid phase enters a condenser at the top of the tower to carry out heat exchange, and the separated gas phase is mixed with the gas at the outlet of the condenser at the top of the tower to enter the compressor, thereby being used for carrying out heat exchange again with the tower kettle. The technical scheme provided by the invention better solves the problems and can be applied to industrial production for separating acetic acid from water.

The invention discloses an energy recycling method for a process for preparing propylene from oxygenated compounds, for mainly solving the problems that in the prior art, a heating furnace is high in heat load, low in heat exchange depth and low in efficiency level. The adopted technical scheme comprises the following steps: (1) desorbing micromolecule organic acid from an oxygenated compound prepared propylene reactor outlet product by using a deacidification reactor, so as to obtain a high temperature material flow I; (2) compressing and heating the high temperature material flow I, so as to obtain a high temperature material flow II; and (3) sequentially feeding the high temperature material flow II into a raw material gas preheater, a methanol gasifier and a circulation water preheater for respectively preheating a raw material gas, gasifying methanol and preheating circulation water. The method saves the energy consumption of a heating furnace of a conventional process and improves the process efficacy level, and meanwhile as the compression section of the product is brought forward, a better effect is achieved in phase separation, and the content of water in gas phase and oil phase is greatly reduced.

The invention discloses a novel biomass-solar distributed poly-generation system. The system comprises pretreatment equipment, a heat pipe gasification reactor, a solar heat collecting device, purification equipment, a combined cooling heating and power device, a biochar deep processing system and a biomass extract deep processing system; biomass particles pretreated by the pretreatment equipment are conveyed to the heat pipe gasification reactor for a thermochemical reaction; obtained biochar enters the biochar deep processing system; an obtained gaseous product is sent to the purification equipment for purification operation; biomass extract obtained through the purification process is conveyed to the biomass extract deep processing system; purified biomass gas is conveyed to the combined cooling heating and power device. The novel biomass/solar distributed poly-generation system provided by the invention can realize the transformation of biomass to diversified high-value products through the complementary self-adaption of biomass energy and solar energy, and the problem that the energy of the input end of a traditional biomass combined cooling heating and power system is single is effectively solved.

The invention provides a solar-gas combined triple-generation system with gradient utilization of thermoelectric power generation. The system comprises a solar cooling-heating-electricity triple-generation system, a gas cooling-heating-electricity triple-generation system and a thermoelectric power generation system. According to the solar-gas combined triple-generation system, three functions ofefficient cooling, heating and power generation and combination thereof are achieved mainly through solar heat-collection power generation and gas-thermoelectricity technologies, under the condition of enough solar irradiance, the solar-gas combined triple-generation system is used for heating a room or making hot water by utilizing solar energy as a low-temperature heat source, under the condition of insufficient solar irradiance, the solar-gas combined triple-generation system is used for heating a room or making hot water by utilizing gas as energy, hot water can be made during indoor cooling in summer, and the solar-gas combined triple-generation system can continuously, stably and efficiently operate without limitation of weather; meanwhile, the thermoelectric power generation technology is utilized, waste heat generated in the system operation process is subjected to gradient utilization of energy, and thus the comprehensive energy efficiency ratio of the system is improved.

The invention relates to an air cooling unit steam turbine waste heat using system and method. The system is characterized in that a waste heat working medium in a steam turbine waste heat working medium pipe returns to the steam turbine side after entering a cold air pre-heater (2) to heat boiler cold air; the boiler cold air passes through an air heater to be subject to water condensation through a condensation water pipe (7), is heated again, and then enters an air pre-heater to push out boiler discharge smoke waste heat; and the part of waste heat enters a smoke-water heat exchanger along with smoke to be used for heating steam turbine low temperature condensation water, and a part of heated high temperature condensation water returns to a steam turbine side condensation water system through a condensation water pipe. As the steam turbine waste heat is used for heating the boiler cold air, the outlet smoke temperature of the air pre-heater is improved; and the smoke water heat passes through a smoke-water heat exchanger (5) to be absorbed by the low temperature condensation water, the low temperature condensation water becomes the high temperature condensation water to return to the steam turbine side so as to be used for pushing a high temperature section to carry out steam extraction and acting, and therefore the overall circulation heat efficiency of a unit is improved.

The invention provides a high-temperature heat pump system with water as a working medium for industrial wastewater waste heat recovery and a method. The high-temperature heat pump system with the water as the working medium for the industrial wastewater waste heat recovery comprises an evaporator, a water steam compressor, a contact type condenser, a first heat exchanger, a second heat exchangerand an electric heating water tank; a steam outlet of the evaporator is connected with an inlet of the water steam compressor, and an outlet of the water steam compressor is connected with a bottom inlet of the contact type condenser; one way of industrial wastewater is connected with a heat exchange tube in the evaporator and flows out after being preheated and supplemented through the first heatexchanger, and the other way of the industrial wastewater is heated and supplemented; and one way of the heated supplemental water is sprayed into the evaporator, and the other way of the heated supplemental water enters the electric heating water tank and then is sprayed into the contact type condenser. The industrial wastewater waste heat recovery heat pump system uses the water as the workingmedium, nontoxicity, environmental protection and high efficiency are achieved, the industrial wastewater waste heat with the temperature above 50 DEG C can be recycled, and high-quality and high-temperature hot water used for living with the temperature above 80 DEG C can be provided.

The invention discloses a secondary reheat type solar energy and coal-fired power plant complementary power generation system. The secondary reheat type solar energy and coal-fired power plant complementary power generation system comprises a solar heat collection field, a steam heating subsystem and a coal-fired power generation subsystem, wherein a steam conveying pipeline of the coal-fired power generation subsystem is in cooperation connection with the steam heating subsystem, and the steam heating subsystem is in cooperation connection with a high temperature heat exchange fluid conveyingpipeline of the solar heat collection field. The solar heat collection field can conduct secondary reheating on a part of the steam used for the coal-fired power generation subsystem through the steam heating subsystem. The secondary reheat type solar energy and coal-fired power plant complementary power generation system carries out secondary reheating on the coal-fired power generation subsystem through the solar heat collection field and the steam heating subsystem, the average heat absorption temperature of circulating working media in the Rankine cycle of the coal-fired power generationsubsystem is increased, and thus the power generation efficiency of a coal-fired power plant is improved. Meanwhile, the coal-fired power generation subsystem can improve the energy grade and work capacity of solar energy heat introduced into the coal-fired power generation subsystem, and the light-heat conversion efficiency of solar energy and the light-electricity conversion efficiency of the power plant are indirectly improved.

The invention discloses a zero-carbon-emission combined cooling heating and power system based on solar energy methanol decomposition synthesis cycle and a method, and belongs to the field of distributed energy sources. According to the method, methanol is heated and decomposed by solar energy to obtain carbon monoxide and hydrogen, and low-grade solar energy is converted into high-grade chemical energy to be stored; in an synthesis gas internal combustion engine, carbon monoxide and hydrogen are combusted to generate carbon dioxide and water, a rotating crankshaft drives a generator to generate electric energy to supply power, multi-stage waste heat generated by the system can supply heat, an absorption refrigeration device can supply cold, and low-temperature waste heat can be utilized to generate power through an organic Rankine cycle device; and power is supplied to a load and an electrolytic cell through a photovoltaic device, the electrolytic cell electrolyzes water generated in the synthesis gas internal combustion engine to produce hydrogen, methanol is synthesized again with carbon dioxide generated in the synthesis gas internal combustion engine, and carbon circulation is achieved. The system inputs solar energy and outputs cold and hot electric energy, expensive energy storage equipment is not needed, the energy efficiency is high, and carbon emission is zero.

The invention discloses a method and a system for integrating a compressed air thermochemical process and fuel cell energy storage hydrogen production. In an energy storage stage, compressed air is coupled with a heat absorption type chemical reaction, so that not only is the mixed storage of physical/chemical energy realized, but also the energy grade of compression heat can be improved; in an energy release stage, a solid oxide fuel cell-turbine system matched with compressed air energy storage pressure is adopted, and stored chemical energy and pressure energy are efficiently converted into electric energy; and in the energy storage stage and the energy release stage, hydrogen serves as an energy carrier to achieve conversion from low-grade heat energy to high-grade chemical energy, and the energy utilization efficiency of the system is improved while the energy storage and hydrogen production integrated application mode is achieved.

The invention discloses a selective absorption-compression composite heat pump circulating device and method based on a chemical reaction. The device is mainly composed of an exothermic reactor, a heat absorption reactor, an absorber, a generator, a compressor, a Roots blower, a solution heat exchanger and the like. According to the device, a gas cycle working medium is used for synthetic reactionin the exothermic reactor to heat heating medium water, and a synthetic reactant is used for decomposition reaction in the heat absorption reactor to absorb low-grade heat energy; and mixed gas generated by decomposition is subjected to primary pressure boosting through the Roots blower and then separated through absorption, selective absorption gas is subjected to secondary pressure boosting through thermal compression, and absorbed residual gas leaves from the upper part of the absorber, enters the compressor to increase pressure and enters the reactor to form circulation. According to thedevice and the method, compression is carried out to required working pressure after selective absorption, electric compression and thermal compression are combined for use, the main driving energy islow-grade heat energy driving, and the primary energy utilization rate of the system is improved.