76 results about "Coking plant" patented technology

The invention discloses a phenol-cyanogen wastewater tail gas deodorization treatment process which comprises the following steps: firstly, intensively collecting tail gas through a system consisting of a sealing cover, a collecting pipeline and an induced draft fan aiming at normal-temperature odor containing ammonia gas, hydrogen sulfide and organic waste gas generated by structures such as an adjusting tank and a floatation tank in a phenol-cyanogen wastewater system of a coking plant; the chemical washing tower is used for removing alkaline substances and the like by using a phosphoric acid solution, the biological filter prewashing section is used for absorbing impurities and humidifying gas by using clear water, the biological section is used for degrading pollutants by using microorganisms, the activated carbon is used for adsorbing residual organic waste gas, and finally, the gas reaches the standard and is discharged through a chimney. The process can effectively reduce the concentration of each pollutant in the waste gas, improves the environment quality, provides treatment demonstration for the industry, and has remarkable environmental and economic benefits.

The invention discloses a method for sequestration of carbon by using strong brine wastewater of a steel plant and a used device, and belongs to the technical field of tempering co-production process production. The method comprises a sodium carbonate production process I and an ammonium chloride production process II which form a cycle; raw materials NH3, salt NaCl and gas carbon dioxide are continuously added into the circulating system, and meanwhile sodium carbonate and ammonium chloride products are continuously produced; the raw material carbon dioxide comes from steel mill blast furnace top gas, steel rolling heating furnace tail gas or lime kiln tail gas; the raw material salt NaCl comes from concentrated salt wastewater of a steel mill; the raw material NH3 is from a byproduct coke oven gas generated in the production process of a steel enterprise and a coking plant. According to the method, sodium carbonate is prepared by fully utilizing three wastes, the situation that soxhlet and Hou's alkali production is adopted in the traditional alkali production industry to damage natural ecology and generate a large amount of waste gas, waste water and waste residues is broken, and double protection of resource recycling and environment is realized.

The present invention discloses a combined control method for automatically balancing the pressure of multiple coke oven gases, comprising the following steps: connecting to the pressure measurement points of each gas source and the usage measurement points of each gas user in the original DCS system of the power plant, and remotely controlling the gas release regulating valves of each gas source; measuring the pressure values, target deviation values, and gas usage values ​​of each gas user at each gas source pressure measurement point; comparing the gas pressure target values ​​set by each gas user with the measured gas pressure values, target deviation values, gas usage values, and average gas flow values ​​of each gas user; and outputting different control instructions for the gas release regulating valves of each gas source through a combined calculation method. The combined control method for automatically balancing the pressure of multiple coke oven gases of the present invention has the advantages of automatically adjusting the gas pressure, timely and accurately adjusting the gas pressure of each coking plant, uniformly regulating the pressure, and preventing the backflow of low-pressure incoming gas.

The invention relates to the technical field of health impact assessment, and discloses a health impact assessment method and system for the coking industry, and the method comprises a plurality of steps: multi-path data collection, pollutant migration simulation, data classification processing, deep neural network row model establishment, risk assessment prediction and the like. According to the method, a complete coking plant pollutant health assessment system is formed, migration simulation is performed on pollutants around the coking plant, the carcinogenic risk level of the pollutants is predicted according to pollutant indexes and a deep neural network model, the pollutants around the coking plant can be accurately predicted and classified, and the risk level of the pollutants around the coking plant is predicted. And risk level evaluation is performed for pollutant migration, and meanwhile, calculation of carcinogenic risks is completed based on pollutants under different exposure paths, so that evaluation of the carcinogenic risks of influence of pollutants around the coking plant on human health is completed, and the risk evaluation accuracy is improved.

The invention discloses a steam utilization method and related equipment, and relates to the technical field of coking production, and the method comprises the following steps: carrying out sensible heat recovery on raw coke oven gas discharged by a coke oven riser in a target coking plant area to obtain a first steam source; steam extraction is conducted from a dry quenching power generation turbine in the target coking plant area, and a second steam source is obtained; acquiring steam demand parameters of a plurality of process units in the target coking plant; based on the steam demand parameters, the first steam source and the second steam source are distributed for use by the plurality of process units. According to the method, a high-pressure steam pressure reduction mode is replaced by raw gas sensible heat recovery steam and steam turbine medium-pressure extraction steam, flexible distribution is combined with process requirements, steam cascade efficient utilization and self-sufficient balance in a plant area are achieved, energy consumption and cost are reduced, stable production is guaranteed, and meanwhile energy-saving and environment-friendly benefits are achieved.

The invention relates to a refrigerating system and method for recovering coking high-temperature condensed water waste heat coupling steam temperature adjustment. The refrigerating system comprises a crude benzene distillation unit, an ammonium sulfate unit, an ammonia distillation unit, a three-section type gas primary cooler, a condensed water heat exchanger, a steam heat exchanger, a waste heat water type refrigerating machine and a condensed water recovery water tank. The problem that a refrigerating station needs to be provided with a waste heat water type refrigerating machine and a steam type refrigerating unit due to the fact that waste heat of waste heat water of the primary cooler is insufficient can be solved while waste heat of high-temperature condensed water of a coking plant is recycled, the temperature of the waste heat water is increased through the steam heat exchanger, and then the heat exchange efficiency of the refrigerating machine is improved; the total investment is reduced, and the operation cost is saved.

The utility model relates to the technical field of ascension pipes, in particular to coking plant furnace top ascension pipe dust removal equipment which comprises an ascension pipe body. Tar in raw coke oven gas is left at the bottom of the filter screen, then flows downwards through the inner wall of the ascending pipe body and finally gathers at the annular notch part, and the right side of the annular notch part is higher than the left side of the annular notch part, so that the tar flows towards the left side and is discharged through the discharge pipe; the movable end of the electric push rod drives the rectangular box to move rightwards to the center of the top of the filter screen, a water pump is started, the water pump pumps out cleaning liquid in the water tank and conveys the cleaning liquid into the rectangular box through a water outlet pipe and a hose, finally, the filter screen is washed and cleaned through a high-pressure spray head, and similarly, water flow can also be discharged through a discharge pipe. Therefore, the tar is prevented from adhering to the filter screen and the inner wall of the ascending pipe body, the tar and dust can be automatically cleaned, and time and labor are saved.

The invention relates to the technical field of energy recovery of coking plants, in particular to a coking plant condensation water heat recovery system and method. Comprising a condensed water feeding pipeline, an evaporator, a working medium storage tank, a heat engine, a condenser and a condensed water collector, the condensation water feeding pipeline is connected with a first inlet of the evaporator, a first outlet of the evaporator is connected with an inlet pipeline of the condensation water collector, and the condensation water collector is of a closed structure. An outlet of the working medium storage tank is connected with a second inlet pipeline of the evaporator, a second outlet of the evaporator is connected with an inlet pipeline of the heat engine, an outlet of the heat engine is connected with a first inlet pipeline of the condenser, and a first outlet of the condenser is connected with an inlet pipeline of the working medium storage tank. Heat contained in the high-temperature condensed water is efficiently recycled, the problem of evaporation loss of the condensed water in the evaporation process is fundamentally avoided, the manufacturing cost of heat utilization equipment is saved, and heat pollution is avoided.

The invention relates to the technical field of coking plant flue gas treatment, in particular to an efficient multistage spraying pretreatment coking plant flue gas purification spray tower which comprises a tower body, a water tank and an induced draft fan, the water tank and the induced draft fan are located at the bottom of the tower body, the induced draft fan is connected with a first gas pipe and a second gas pipe, and the second gas pipe extends into the bottom of the tower body. A packing frame is arranged in the tower body, a cleaning mechanism for cleaning packing in the packing frame is arranged in the tower body, the packing is subjected to water spraying cleaning through a cleaning assembly to be subjected to first-layer treatment, supporting on the packing frame is relieved through a limiting assembly, and then the packing frame falls off to impact a first vibration spring after lacking of supporting; the vibration generated by falling and impacting of the filler frame can remarkably improve the treatment effect on filler impurities, high-frequency friction and displacement are generated among filler particles through instant impact force, stubborn dirt and cakes attached to the surface of filler are effectively loosened, and the vibration-scouring synergistic effect is formed in cooperation with flushing, so that the deep cleaning effect is achieved.

The application provides a coking furnace tail gas clean combustion utilization system. The coking furnace tail gas clean combustion utilization system comprises, in sequence, a combustor, a heating device, a drying device and a dust collecting device, wherein the air inlet end of the combustor is connected with a tail gas valve group and a blower of a coking furnace; and the combustor is a pre-combustion chamber type coal powder cyclone combustor. Through the combustor, the heating device, the drying device and the dust collecting device connected in sequence, the VOCs tail gas of the coking plant can be efficiently and cleanly utilized.

The utility model provides a kind of SCP integrated machine tamping coal automatic water replenishing device, belong to coal material water replenishing technical field, including coal box, the left side of coal box is provided with tamping machine for tamping coal material, coal box upper surface is provided with water replenishing mechanism, water replenishing mechanism is used to realize the water replenishing treatment to tamping machine place coal material, the utility model can carry out water replenishing operation to furnace coal, to ensure that coal box coke side furnace coal moisture is in proper range, it is favorable to reach coke oven's coal collapse rate index, improve the economic benefit of coking plant.

The utility model discloses a coking plant fly ash recycling device, which relates to the field of coal coke chemical industry, and comprises a support base, the top of the support base is provided with a first screw conveyer, the first screw conveyer comprises a first variable frequency motor, and the right side of the first variable frequency motor is fixedly connected with the first screw conveyer. Materials are fed from a stock bin on the top of the second spiral conveyor, conveyed to an inner cavity of the first spiral conveyor through the second spiral conveyor and discharged through a discharging pipe, and in order to achieve quantitative feeding of a discharging port, a weighing sensor is arranged on the first spiral conveyor and can detect the weight of the conveyed materials and send out a signal in real time. The frequency converter dynamically adjusts the rotating speed of the feeding screw in the conveyor according to a material signal sent by the sensor, so that quantitative feeding is achieved, the quantitative feeding precision can reach 0.2%, the feeding capacity is about 0.1-100 t / h, and therefore the problems in the background technology are solved.

The utility model relates to the technical field of coke dry quenching machinery in a coking plant, in particular to a dry quenching one-time dust removal water-cooling sleeve device, which comprises a protective part, a heat exchange part fixedly connected with the protective part and a connecting part fixedly connected with the heat exchange part. The condition of water leakage caused by weld joint cracking due to high temperature is avoided, the dust removal operation of the primary dust removal device is further stabilized, the maintenance frequency is reduced, and the dust removal efficiency is improved.

The application discloses a coking low-quality sulfur extraction refining process and system and belongs to the field of chemical production processes.The process comprises the following steps: obtaining liquid crude sulfur by melting sulfur and clarifying HPF ammonia desulfurization sulfur foam; forming particles by spraying liquid crude sulfur through an underwater granulation nozzle in a two-phase medium containing a crude benzene phase and a circulating water phase, so that organic matters enter the crude benzene phase and ammonium salt enters the circulating water phase at 75-85 DEG C; cooling the mixed liquid to 20-25 DEG C, and forming a crude benzene layer, a circulating water layer and a sulfur layer from top to bottom in a cooling separation tank by using the density difference, and obtaining the product by centrifugal separation of the sulfur layer.The application realizes the separation of organic matters and ammonium salt simultaneously under low-temperature conditions by step-by-step selective extraction of the two-phase medium, the product reaches the A-grade industrial sulfur standard, and a material closed loop is formed with the existing system of a coking plant.

The application discloses a dust escaping and recycling system of a coking plant dust removal ash bin, relates to the technical field of industrial dust removal, and comprises a dust removal ash unloading room, an ash tank operation platform, a dust removal ash storage tank, a dust collection pipeline, an automatic sealing gate, a dust humidifying and stirring system, a dust removal butterfly valve, a fluid conveying control valve, a dust remover and a control device. A mounting hole corresponding to the dust removal ash storage tank is formed in the side wall of the dust removal ash unloading room, one end of the dust collection pipeline is arranged in the mounting hole, the other end of the dust collection pipeline is connected to the input end of the dust remover, the output end of the dust removal ash storage tank is connected to the input end of the dust humidifying and stirring system, a dust suction inlet is formed in one end of the dust collection pipeline located in the dust removal ash unloading room, the dust removal butterfly valve is arranged in the dust collection pipeline, and the automatic sealing gate is arranged at the entrance of the dust removal ash unloading room. Through the arrangement, dust pollution is significantly reduced, equipment corrosion is reduced, manual cleaning intensity is reduced, and the working environment is improved.

The invention discloses a process for co-processing copper slag and fly ash by using steelmaking refining slag, which comprises the following steps: mixing fly ash generated by a coking plant with copper slag for pelletizing, adding pellets with the diameter of 5-20mm into the refining slag, and carrying out co-processing on the copper slag and the fly ash by using physical heat and high-alkalinity mineral structure of the steelmaking refining slag, heavy metal elements in the copper slag are reduced and recycled to serve as raw materials of the iron and steel industry for resource utilization, arsenic compounds in the alkaline steel slag and the copper slag react to form calcium arsenate, harmless conversion of harmful components in the copper slag is achieved, meanwhile, the technology optimizes the technological structure of the refining slag, the risk in the resource utilization process of the refining slag is reduced, and the economic benefit is increased. And economic benefits and environmental protection benefits are huge.

The utility model discloses a coke oven gas purification system for efficiently recycling a heat source of a coking plant, which comprises a heat source recycling unit and a coke oven gas purification unit, the coke oven gas purification unit comprises a dust removal system, a desulfurization system and an ammonium sulfate elution benzene system, and the heat source recycling unit comprises a heat source recycling pipe and a boiler. The interior of a desulfurization waste liquid treatment device of the desulfurization system is sequentially divided into a stirring chamber, a crystallization chamber and a drying chamber from top to bottom through a plurality of oblique cones, the stirring chamber, the crystallization chamber and the drying chamber are communicated, a hollow shaft and a mandrel movably installed in the hollow shaft are coaxially arranged in the stirring chamber, an outer stirring plate is arranged on the upper portion of the hollow shaft through a connecting rod, and an inner stirring plate is arranged on the hollow shaft; a middle stirring plate is arranged between the outer side stirring plate and the inner side stirring plate, a cooling mechanism is arranged in the crystallization chamber, a jacket is arranged on the outer side of the drying chamber, and a steam outlet of the boiler is communicated with the jacket. In conclusion, the device has the advantages of high desulfurization waste liquid extraction efficiency, good product quality, good extraction effect and efficient recycling of a heat source.

The present application belongs to the field of information technology, and particularly relates to a coal mine methane emission tracing method based on multi-isotope analysis and associated gas coordination. By fusing multi-isotope characteristics and associated gas ratio analysis, a multi-dimensional tracing system for coal mine regional methane emission is constructed, which significantly improves the accuracy and reliability of methane source identification. Compared with the traditional tracing method relying on single isotope or concentration statistical method, the present application can effectively distinguish various emission types such as coal mine gas, coking plant, coal-fired and agricultural sources in a complex mixed source environment, and realize high-precision cause analysis of multi-source methane emission. The present application realizes the spatio-temporal matching of isotope characteristics and transport path, and can quantitatively identify the influence of high-altitude and external source input on ground concentration.

The invention discloses a resource utilization method of sulfur dioxide in incineration flue gas, and relates to the technical field of incineration flue gas purification processes, and the method comprises the following steps: S1, introducing flue gas after hydrogen chloride is removed by a quench tower, a bag-type dust collector and a water absorption process into a multi-stage sulfur dioxide absorption tower, absorbing sulfur dioxide in the flue gas by taking a sodium hydroxide solution as an absorption medium to generate a mixed solution of sodium sulfite and sodium sulfate; s2, transferring the saturated absorption liquid into an oxidation device, and introducing air for oxidation reaction to obtain an oxidation reaction liquid; s3, cooling and crystallizing the oxidation reaction liquid, separating to obtain sodium sulfate decahydrate crystals, detecting and treating mother liquor, and recycling the mother liquor in an absorption tower. Resourceful treatment of sulfur dioxide in flue gas of waste incineration, coal-fired boilers, oil-fired boilers, thermal power plants, coking plants and other acid gases containing sulfur, chlorine and the like is realized; and resource utilization of sulfur dioxide in the flue gas is realized, no waste is generated, and the method is simple and efficient.

The invention discloses a coke dry quenching bleeding system for a coking plant, which comprises a common bleeding pipeline arranged outside a dry quenching furnace top dust collection cover A and communicated with a dry quenching furnace top dust collection cover B. The outlet end of the dry quenching furnace top dust collection cover B is connected with a pretreatment device. The pretreatment device comprises a first treatment section and a second treatment section, the first treatment section and the second treatment section are connected in series, an outlet of the second treatment section is directly discharged, and the dry quenching furnace top dust hood B comprises a cube shell and a buffer section welded to the cube shell. The buffer section is formed by splicing and welding shells with two triangular sides and two square sides, a bent pipeline is fixedly welded to the dry quenching furnace top dust hood B and connected with an inlet of a pretreatment device, and a narrow air channel is formed in the connecting position of the bent pipeline and the dry quenching furnace top dust hood B and is of an oval structure.

The invention discloses a plane layout system for a ferrous metallurgy plant, and relates to the technical field of plant layout, the plane layout system comprises a raw material wharf, a finished product wharf, a stock yard group, a pre-iron plant group, an iron plant, a steel plant and a rolling mill, the finished product wharf and the raw material wharf are arranged side by side, the stock yard group is adjacent to the raw material wharf, and the stock yard group comprises a coal yard, a pellet yard and a mineral yard; the pre-ironmaking plant group comprises a coking plant, a sintering plant and a pelletizing plant, the pre-ironmaking plant group is adjacent to the stock yard group, the ironmaking plant group is adjacent to the pre-ironmaking plant group, the raw material wharf, the stock yard group, the pre-ironmaking plant group and the ironmaking plant are sequentially arranged according to a first direction, the steelmaking plant is adjacent to the ironmaking plant, and the steel rolling plant is adjacent to the steelmaking plant and the finished product wharf; the iron making plant, the steel making plant, the steel rolling plant and the finished product wharf are sequentially arranged in the second direction, and the second direction is opposite to the first direction. According to the invention, the whole production process is compact, efficient and smooth in a manner of sequentially and smoothly arranging the plants according to an advanced process flow.

The invention relates to the technical field of fire safety, in particular to a coking plant fire protection method and system based on equipment health degree and fire risk coupling analysis, and the method comprises the steps: collecting operation parameters, environment parameters and video image data in real time through a multi-dimensional data collection module, and generating standardized data through a data preprocessing module; inputting the data into an equipment health degree evaluation module and a fire risk prediction module for quantitative evaluation and prediction; the coupling analysis module obtains a coupling degree and a coupling coordination degree based on the equipment health degree index and the fire risk value; and the fire-fighting linkage control module executes a differential response strategy according to a coupling analysis result, and corresponding model parameters are optimized regularly through the model updating module. The method has the advantages that by constructing the coupling analysis model, the equipment health degree index and the fire risk value serve as the correlation sequence parameters for the first time, the internal interaction and co-evolution law between the equipment health degree index and the fire risk value is quantitatively revealed, and potential hidden danger missed judgment caused by isolated and one-sided analysis can be avoided.

This invention discloses a method and system for synergistic regulation of low oil content and high-quality tar in circulating ammonia water of coking plants, belonging to the field of coal chemical tar ammonia water separation and purification technology. The system includes a gas-liquid separation device, a tar ammonia water separation device, a reagent quantitative dosing device, a tar residue draining device, and a control system. The gas-liquid separation device includes a gas-liquid separator, a horizontal tube primary cooler, an upper condensate circulation tank, and a lower condensate circulation tank. The tar ammonia water separation device includes a mechanized tar ammonia water separation tank, a first-stage circulating ammonia water tank, and a second-stage circulating ammonia water tank. The reagent quantitative dosing device includes a multi-point synergistic demulsifier dosing device and a flocculant dosing device. The tar residue draining device includes a liquefaction tank, a grinding pump, a centrifuge, and a slag hopper. The control system includes a hysteresis-stretching interface meter, an automatic regulating valve, and a PLC controller. This invention breaks through the traditional single-improvement mode, forming a systematic solution; it can significantly reduce the oil content of circulating ammonia water and improve tar quality.

The invention relates to the field of waste heat utilization and hydrogen energy preparation in the coking industry, in particular to a system and a method for producing hydrogen by utilizing waste heat of a coking plant through electrolysis. The system comprises a steam pressure regulating system, a solid oxide electrolysis system, a hydrogen compressor, a hydrogen storage system, an air compressor and an oxygen-enriched air storage system, and a first steam inlet of the steam pressure adjusting system is connected with high-temperature and high-pressure steam of a coking plant. High-pressure steam of a coking plant forms low-pressure steam with stable flow after passing through the steam pressure adjusting system, the feeding requirement of the solid oxide electrolysis hydrogen production system can be met, the solid oxide electrolysis system electrolyzes the high-temperature steam into hydrogen, and the generated hydrogen is stored in the hydrogen storage system. According to the system, low-energy-consumption preparation of hydrogen is achieved, the hydrogen can be used for hydrogen metallurgy, and the system has important significance on energy conservation, carbon reduction and green transformation in the iron and steel industry.

The utility model provides a coal gas water seal system, which is suitable for a cold blowing process of a coking plant, belongs to the technical field of energy conservation of the cold blowing process of the coking plant, and comprises a first coal gas water seal, a second coal gas water seal, a first heat tracing pipe and a second heat tracing pipe, an inlet of the first tracing pipe is connected with an outlet of the oil depot dehydration pipeline tracing pipe, the second tracing pipe is arranged on the outer surface of the second gas water seal, and an inlet of the second tracing pipe is connected with an outlet of the crude benzene deslagging pipeline tracing pipe. According to the system, heat tracing steam in the oil depot dehydration pipeline heat tracing pipe and the crude benzene deslagging pipeline heat tracing pipe is used for heat tracing of the first gas water seal and the second gas water seal, a large amount of steam consumption is saved, and effective utilization of energy is achieved.

The utility model discloses a coke oven basement guniting joint, which comprises an interface main body, two ends of the interface main body are respectively connected with guniting equipment and a guniting pipeline, the interface main body is provided with a quick connecting mechanism, and the quick connecting mechanism comprises a control switch, an external thread, a sealing gasket, a connecting part, an annular groove and a group of limiting grooves. The connector has the advantages that the connector body can be quickly connected with a guniting device and a guniting pipeline through the quick connection mechanism, and the control switch is arranged on the connector body and is convenient to switch on and switch off; the interface main body is made of a high-strength and corrosion-resistant alloy material, and the sealing ring and the sealing gasket are made of a high-temperature-resistant and wear-resistant material, so that the guniting interface can adapt to a severe construction environment of a basement of a coking plant, and the service life of the guniting interface is prolonged; through the dual sealing effect of the sealing ring and the sealing gasket, leakage of slurry is effectively prevented, and the quality and efficiency of slurry spraying operation are improved.

The invention relates to the technical field of wastewater treatment, and discloses an industrial carbon dioxide capture and utilization and sodium-based recycling method based on cavitation air floatation, which comprises the following steps: S1, proportioning integrated wastewater of an iron and steel plant and waste ammonia water obtained by a coking plant to obtain a first target mixed solution, s2, carbon dioxide-containing gas in an iron and steel plant serves as a gas supply source of a first-stage cavitation air flotation fan blade, and carbon dioxide rapidly reacts with calcium and magnesium ions in the first target mixed solution to generate calcium carbonate, magnesium carbonate crystals and other solid impurities, and S3, the ammonia-containing treatment solution, the integrated wastewater and the waste ammonia water are matched to obtain a second target mixed solution; in a steel mill environment, carbon capture and waste water can be realized in the same device, waste ammonia which can be easily obtained by a steel mill is utilized, waste water and flue gas are integrated for coupling, and economic extraction of calcium and magnesium ions and sodium groups is realized. The extract can be used in steel mills or produce economic by-products, so that reasonable utilization of resources is realized, and meanwhile, the wastewater and waste gas treatment cost is reduced.

A method for preparing coal or binder material used alone or in combination with other coals as a raw material for coke making, before the coal or binder material enters the coking plant, while heating the coal or binder material contained in a container and rotating a stirrer, the content of particles with a particle size of 6 mm or more of the coal or binder material that satisfies at least one of the following: the bond strength (a - b) / a represented by the height b of the semi-coke formed on the inner side wall of the container and the height a of the semi-coke attached to the stirrer is 0.20 or more, and the height a is 30 mm or more, is adjusted to 30% by mass or less.

The invention discloses a multi-type industrial enterprise flue gas carbon dioxide in-situ conversion and carbon neutralization fuel oil synthesis process and a modular device, and belongs to the technical field of carbon capture and utilization, carbon neutralization and new energy fuel. According to the invention, various heat-producing and carbon dioxide-producing industrial enterprises such as thermal power plants, coking plants, chemical plants and the like are integrated, double modes of nearby wind power / photovoltaic / hydroelectric green power hydrogen production and direct outsourcing of green hydrogen are newly added, and flue gas, industrial water sources and surplus heat energy of the enterprises are utilized; through flue gas purification, carbon dioxide in-situ capture (dual-mode switching), green electricity / industrial electricity hydrogen production or green hydrogen supply, catalytic synthesis and waste heat self-heating, liquid fuel oil which is only used for internal use of an enterprise is generated, and full-closed-loop carbon neutralization is achieved. The device is of a modular skid-mounted structure, green power and green hydrogen interfaces are reserved, the device can be flexibly adapted to various enterprises and green energy scenes, large-scale transformation is not needed, the cost is low, the compliance is high, the carbon neutralization effect is remarkable, and the device is suitable for industrial enterprise green transformation and carbon emission reduction.

This invention provides an energy-saving and efficient method and system for producing concentrated ammonia from coking waste ammonia water. The system includes an ammonia stripping tower (1), an ammonia washing tower (2), a desorption tower (3), a steam compressor (4), a wastewater evaporator (5), a fractional evaporator (6), a condenser evaporator (7), an ammonia stripping wastewater pump (8), a phosphate fertilizer circulation pump (9), a phosphate fertilizer feed pump (10), a wastewater circulation pump (11), a phosphate fertilizer circulation liquid cooler (12), a phosphate fertilizer rich liquid heat exchanger (13), an ammonia stripping wastewater heat exchanger (14), a concentrated ammonia water cooler (15), and a heater (16). This invention also discloses an energy-saving and efficient method for producing concentrated ammonia from coking waste ammonia water. The system for producing concentrated ammonia from coking waste ammonia water using this invention is simple, energy-saving, and efficient. The concentrated ammonia water product prepared using this system meets relevant standard requirements.