98results about How to "Clean and efficient use" patented technology

The invention relates to a method for recycling lithium from a lithium ion battery waste electrolyte, and belongs to the technical field of resources cyclic utilization. The invention aims to providethe method for recycling the lithium from the lithium ion battery waste electrolyte. The method is mainly characterized by mixing and reacting the waste electrolyte and a halogenide solution containing a large positive ionic radius, wholly separating PF6- in the electrolyte, deeply purifying the lithium-containing solution after separation, and precipitating the lithium to obtain lithium carbonate, so that the aim of cleanly and high-efficiently utilizing the lithium ion battery waste electrolyte is achieved.

The invention discloses a method for producing corrugated base paper pulp by utilizing scrap materials of a fibre board. The method comprises the main steps of: preparing, soaking, steaming, spirally extruding, chemically processing, grinding, eliminating, washing and purifying materials. A majority of free formaldehyde in the raw material is removed and recycled possibly in a pulping process; a little of chemical solution is added from the rear part of a twin screw extruder, and the liquid medicine is uniformly mixed with the fibre and then subjected to mild chemical reaction by utilizing high-concentration mixing action of an extruder and heat energy generated in extruding and mixing processes, so that the high pulping yield is kept, the damage to the fibre in a grinding process is alleviated, the excellent physical strength of the pulp fibre is ensured, and the pollution load in the pulping process is reduced at the same time.

The invention provides a safe and efficient system and a safe and efficient method for preparing powdered coal. The system comprises a coal preparation system, a coal grinding system, a separating system and a superheated steam generating system, wherein the coal grinding system is provided with a material inlet, a superheated steam inlet, a powered coal outlet and a hot dust steam outlet; an outlet of the coal preparation system is communicated with the material inlet of the coal grinding system; an outlet of the superheated steam generating system is communicated with the superheated steam inlet of the coal grinding system; a hot dust steam outlet of the coal grinding system is communicated with an inlet of the separating system; the separating system is provided with a powered coal outlet and a hot steam outlet; the hot steam outlet of the separating system is communicated with a circulating steam inlet of the superheated steam generating system. Superheated steam is taken as protective gas, and thus the safety problem during the preparation of powered coal is solved; the protective medium of superheated steam can be basically subjected to full cyclic utilization, and thus the problems of pollutant discharge and heat waste are solved; the powered coal is dried by the superheated steam in a coal grinding machine, and thus the drying process is eliminated, the technical process is simplified, and the material processing cost is reduced.

The invention provides a high-nitrogen biomass waste gasification combustion heat supply system and a process. The system comprises a pyrolysis gasification furnace, a baking gas absorption device, avolatile component combustion boiler and a semicoke combustion heat utilization device in different zones, wherein the purpose that high-nitrogen biomass waste fuel volatile components and semicoke are firstly separated and are further respectively gasified and combusted independently is achieved, interaction of semicoke N and tar N is effectively weakened, conversion of fuel nitrogen to an NOx precursor is reduced, and meanwhile instable nitrogen structures in fuel are removed in a baking zone through pretreatment, so that the fuel nitrogen is reduced from sources, and NOx generated in laterheat supply process is effectively reduced. On premise that system energy is reasonably utilized, through pretreatment on instable fuel nitrogen and separation gasification combustion heat supply of semicoke nitrogen and volatile component nitrogen, conversion of the fuel nitrogen to NOx is weakened or inhibited in the high-nitrogen biomass waste gasification combustion heat supply process, and clean and efficient utilization of energy of high-nitrogen biomass wastes is achieved.

The invention discloses a system and a method for electrolyzing urea for wastewater treatment and coal liquefaction hydrogen supply. According to the system and the method, high-content urea in wastewater is oxydatively degraded by virtue of an electrolytic method so as to obtain high-purity hydrogen, and hydrogen is supplied to a coal liquefaction system to generate hydro-liquefaction reaction, so that the clean utilization of coal resources is promoted; the energy consumption of electrolytic hydrogen production can be reduced, and the urea in the wastewater is taken as the raw material, so that the electrolytic hydrogen production cost is further lowered, and the popularization of an environment-friendly and harmless electrolytic hydrogen production manner is promoted; the urea in the wastewater is removed by virtue of the electrolytic method, reaction conditions are mild, the treatment effect is good, and the environmental pollution caused due to NH3 released during the decomposition of the urea can be avoided; and the coupling of urea wastewater treatment and efficient electrolytic hydrogen production is realized, and electrolytically produced hydrogen is applied to a coal liquefaction process, so that the clean and efficient utilization of the coal resources is realized, and the system and the method have a relatively high environmental protection significance and comprehensive benefits.

The invention relates to a system and a method for making hydrogen through ammonia electrolysis and applying the hydrogen to coal liquefaction. The system comprises an electrolyte supplying system, anelectrolysis bath and a coal liquefaction system; the outlet of the electrolyte supplying system is connected with the electrolyte inlet of the electrolysis bath; the cathode hydrogen outlet of the electrolysis bath is connected with the inlet of the coal liquefaction system; the conventional alkali electrolysis bath is utilized; the high-purity hydrogen is obtained through ammonia electrolysis and is supplied to the coal liquefaction system; hydro-liquefaction reaction is performed, so that clean utilization of coal resources is promoted; by adopting the method and the system, energy consumption of electrolytic hydrogen production can be lowered; cost of electrolytic hydrogen production is lowered, and promotion of a green and harmless electrolytic hydrogen production mode is facilitated; ammonia in waste water can be removed with the electrolysis method, so that coupling of waste water treatment and high-efficient electrolytic hydrogen production is realized; the hydrogen made through electrolysis is further applied to the process of coal liquefaction, so that clean and high-efficient utilization of the coal resources is promoted; and the method and the system are of high environment-protection significance and comprehensive benefits.

The invention belongs to the technical field of biomass pyrolysis and mainly provides a biomass pyrolysis and catalytic cracking system based on regenerative radiant tube heating. The system comprises the following parts: a pyrolysis hopper, a first feeding device, a pyrolysis and catalytic cracking reactor, a cracked gas cyclone separator, a spray tower and a gas tank, wherein the pyrolysis and catalytic cracking reactor comprises a feeding hole, a pyrolysis chamber, a cracking chamber, a cracked gas outlet, regenerative radiant tubes, a heat insulating brick wall, a catalyst adding device and a communicating component. The system has the beneficial effects that the reaction system has a simple structure, is convenient to operate, is uniform in temperature distribution and has good heating effects; the oil gas generated in the pyrolysis chamber can undergo deep cracking in the cracking chamber to crack macromolecular tar molecules into micromolecular gaseous hydrocarbon; the reaction system can generate plenty of cracked gas products, thus avoiding the problem that the pyrolysis oil contains dust and truly achieving clean and efficient utilization of fossil fuel.

The invention discloses a microwave pretreatment desulfurization coking device, and particularly provides a device for coking coal. The device comprises a coal blending process, a coal charging process and a coking process; and the method further comprises a microwave pretreatment process between the coal blending process and the coal charging process. The microwave pretreatment process adopts a microwave pretreatment device with the microwave frequency ranged from 300MHz to 300GHz for irradiating, dewatering and desulfurizing the blended coal; and the temperature of the pretreated coal sample is controlled between 150 and 250 DEG C; and then coal is prepared to be charged into a stove and coked. The microwave pretreatment device comprises a microwave reaction chamber body, a connecting device, a conveyor, an exhaust duct and a detection control system, wherein the connecting device, the conveyor, the exhaust duct and the detection control system are arranged among the microwave reaction chamber body, a coke stove coal tower and a coal charging trolley or a material bin. The device is simple; after being quickly preheated, dewatered and desulfurized, the blended coal can be coked so as to improve the bulk density, shorten the coking time and promote the yield of a single furnace as well as the coal quality; and clean and effective utilization of energy can be realized.

The invention relates to the technical field of clean energy, and specifically provides a multi-grade liquefying technology of coal and biomass. The technology is characterized in that the coal and the biomass raw materials are processed by crushing, compressing and crushing again, then the sizing is prepared, so that biomass diesel oil which is high in solid content and can be stably conveyed through a pump can be obtained; high-viscosity waste oil which cannot be used as a coal and biomass liquefying solvent in the prior art can be utilized. According to the technology, coal and biomass canbe liquefied under high pressure and high temperature in the existence of proper volume of water; the liquefying product is sequentially subjected to primary cracking, hydrogenation reaction and deepcracking and hydrogenation reaction under the effects of resisting hydrogen and a first catalyst and a second catalyst, so that the coal and the biomass can be converted into biomass oil, and the biomass oil can be refined; the conversion rate of the biomass and the coal is up to 95-99%; the yield of the biomass oil is up to 70-80%; and moreover, the residue content is less than 2.5%.

The invention belongs to the technical field of pyrolysis of waste tires and mainly relates to a self-dust-removal type pyrolyzing and cracking system for the waste tires based on regenerative radiant tube heating. The self-dust-removal type pyrolyzing and cracking system is used for preparing clean combustible gases. Aiming at the defects in the prior art, the invention designs and develops a self-dust-removal type pyrolyzing and cracking reaction system for the waste tires. The reaction system can perform two operations of pyrolyzing and cracking; oil gas generated by pyrolyzing enters into a particle bed dust removing device; after the oil gas is subjected to filtering and dust removal, clean oil gas enters a cracking chamber, so that the dust removing pressure of a subsequent process is reduced, and tar macromolecules are cracked into small molecule gaseous hydrocarbons. According to a reactor, a large amount of cracking gases can be generated, thereby solving the problem that produced pyrolytic tar is difficult to utilize, and really realizing clean and efficient utilization of the waste tires.

The invention belongs to the technical field of chemical exhaust gas resource utilization, and particularly relates to a resourceful utilization method and system for combining waste gas containing hydrogen and fuel cell clean power generation. The method comprises the following steps that 1, preliminary separation is conducted, wherein the concentration of CO in virgin gas is 7-50%, and is then lowered within 5%; 2, the virgin gas enters a PSA pressure swing adsorption device to be subjected to pressure swing adsorption after being subjected to buffering and liquid separation through a gas and liquid separation unit; 3, after the concentration of CO in the virgin gas is lowered to 10 ppm or below from 5% after treatment, hydrogen is obtained at the tower top; then the virgin gas of whichthe concentration of CO is smaller than or equal to 10 ppm is regarded as fuel cell virgin gas, and fuel cell power generation is conducted through a proton membrane hydrogen cell stack system. The output electric energy is in parallel use, and the generated water enters an origin water pipe network for use. The resourceful utilization method and system have high industrial economic value.

The invention provides a coal pyrolysis and cracking gas production combined gas power generation system, which comprises a pyrolysis hopper, a first feeding device, a pyrolysis and cracking reactor, a spraying tower, a gas tank and a generator set, wherein the pyrolysis and cracking reactor comprises a heat insulation brick wall and a communicating component; the internal space of the reactor is divided into a pyrolysis chamber and a cracking chamber by the heat insulation brick wall; the communicating component is arranged at the lower part of the heat insulation brick wall; the spraying tower is connected with a cracking gas outlet; the gas tank is connected with the spraying tower; the generator set is connected with the gas tank. The reactor of the power generation system is divided into the pyrolysis chamber and the cracking chamber, and oil gas generated by the pyrolysis chamber can enter the cracking chamber for deep cracking, so that the problem that produced pyrolitic oil contains dust is solved, and clean and efficient utilization of coal is really implemented. Two kinds of operation can be integrally executed in one furnace body, so that construction cost is reduced, and the occupied area is saved; a small part of pyrolysis gas is supplied to a radiator tube for combustion, and the rest gas enters the gas generator set to be combusted for power generation.

The present invention relates to the field of coal tar processing, and discloses a method for producing clean diesel oil through coal tar hydrogenation, and a system for the method. The method comprises: introducing a coal tar raw material into a pretreatment unit; introducing the obtained material into a slurry bed hydrogenation reactor; sequentially carrying out separation and fractionation on the obtained material to obtain a light distillate, a middle distillate and a heavy distillate; throwing out part of the heavy distillate; introducing an anthracene oil raw material, the middle distillate and the light distillate into a refining reactor; recycling the remaining heavy distillate back to the slurry bed hydrogenation reactor; sequentially carrying out separation and fractionation on the effluent from the refining reactor; recycling part of a first diesel oil distillate back to the slurry bed hydrogenation reactor; and introducing the remaining first diesel oil distillate into a hydrogenation modification reactor. With the method of the invention, the yield of the liquid can be maximized, the utilization ratio and the utilization value of coal tar resources are improved, and the operation cycle of the equipment is prolonged.

The invention relates to a fluidized combustion and mobile pyrolysis double-furnace compounded circulating fluidized bed. The fluidized combustion and mobile pyrolysis double-furnace compounded circulating fluidized bed comprises a gasification furnace, a gasification agent guide pipe and a slag discharging guide pipe; a circulating gasification furnace is arranged at the upper part of the gasification furnace, and a fixed gasification furnace is arranged at the lower part of the gasification furnace; an air distribution plate is arranged at the lower part of the circulating gasification furnace, a furnace core is arranged under the air distribution plate; the upper end of the furnace core is connected with the lower end of the air distribution plate; a gasification agent channel is arranged in the furnace core, and a gasification agent penetrates through the air distribution plate and enters the circulating gasification furnace to circularly gasify feed coal; an annular channel is arranged between the outer edge of the air distribution plate and the upper furnace body; an annular space between the outer side of the furnace core and the lower furnace body is a pyrolyzing furnace chamber of fixed the gasification furnace; the upper part of the pyrolyzing furnace chamber is an annular channel, and the lower part of the pyrolyzing furnace chamber is provided with an air distribution grate; a semicoke falling from thecirculating gasification furnace enters the pyrolyzing furnace chamber, and the gasification agent enters the pyrolyzing furnace chamber through the air distribution grate to re-gasify the fallen semicoke; and generated high-temperature coal gas enters the upper furnace chamber through the annular channel, and gasified slag is discharged through the slag discharging guide pipe. The circulating fluidized bed is high in carbon conversion rate, energy-saving and environment-friendly.

The invention belongs to the technical field of pyrolysis and cracking of fossil fuel and in particular relates to a self-dust-removal type pyrolysis and catalytic cracking reactor which is mainly specific to resources such as oil shale and coal and used for preparing flammable gas and semicoke products. The invention, aiming at overcoming the defects of the prior art, designs and develops a self-dust-removal-type pyrolysis and catalytic cracking reactor. In the reactor, a pyrolysis chamber and a cracking chamber are designed in an integrated manner, oil gas produced in the pyrolysis chamber enters a particle bed dust removal device, after dust removal is carried out by the particle bed dust removal device, clean oil gas enters the cracking chamber to be deeply cracked, rear-end dust removal pressure is reduced, macromolecular tar molecular is cracked into micromolecular gaseous hydrocarbon, and a large amount of hydrogen is produced in a catalytic cracking manner, so that the problem that pyrolyzed oil contains dust is avoided and clean and efficient utilization of the fossil fuel is really realized.

The invention discloses a coal pyrolysis device and particularly provides a direct heating type coal pyrolysis device. The direct heating type coal pyrolysis device comprises a bottom inlet, a lower-portion fluidization section, an upper-portion outlet, an upper-portion inlet, a feeding port and a pressure-bearing housing and further comprises a central pipe and an upper-portion temperature regulating section, wherein the upper-portion temperature regulating section is located above the lower-portion fluidization section, the upper-portion inlet is communicated with the upper section of the upper-portion temperature regulating section, the central pipe is located in the cavity defined by the upper-portion temperature regulating section and the lower-portion fluidization section, the upper port of the central pipe is communicated with the upper-portion outlet, and the lower port of the central pipe is located in the lower-portion fluidization section. By arranging the upper-portion temperature regulating section and the central pipe and adopting an indirect heat exchange principle, different products are produced by controlling different temperatures, secondary reaction of pyrolysis products is prevented, and improvement of the methane concentration of product gas is facilitated.