40 results about "Coking plant" patented technology

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 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 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 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 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.

According to the coking organic waste gas treatment device provided by the invention, organic gas escaping from a crude benzene storage tank, non-condensable gas discharged from a benzene removal tower and high-oxygen organic waste gas discharged from an ammonium sulfate working section and treated by an ammonium sulfate tail gas pretreatment device are treated by a negative pressure system; the organic waste gas generated in the coking process of the coking plant is subjected to centralized innocent treatment through cooperative use of the equipment, the organic waste gas generated in the coking process of the coking plant is subjected to concentrated innocent treatment, and the organic waste gas generated in the coking process of the coking plant is subjected to high-oxygen waste gas treatment and high-oxygen waste gas discharged by an ammonia washing system. The device can effectively overcome the defect that organic waste gas is difficult to treat due to the fact that various tanks in the coal gas purification and chemical product recovery process are numerous, the VOCs diffusion points are many, the range is wide, and pollution components are complex, in addition, the device conducts harmless treatment on the organic waste gas in a combustion mode, and the device has the advantages of being low in treatment cost, easy to operate and good in treatment effect.

The invention relates to the technical field of industrial safety monitoring, in particular to an artificial intelligence detection system and method for leakage of a tank field of a coking plant based on a rail robot, and an intelligent inspection robot system adopts a modular design and comprises a robot body moving unit and a wireless charger station for charging a robot body battery, the guide rail track is used for guiding the robot to run, and the background network and the server are used for storing and visualizing inspection data of the robot. According to the invention, a high-frequency all-weather regular inspection task is carried out by taking 30 minutes as a cycle, the concentration of specified gas in the environment is detected through a carried gas detector, the running state of equipment is automatically identified through AI image identification, and a report is generated.

The invention discloses an intelligent belt conveying system applied to the coking field, and relates to the technical field of coking production monitoring, and the intelligent belt conveying system comprises a mobile monitoring unit, a monitoring model unit, a training adjustment unit and a central control unit; the mobile monitoring unit comprises a mobile module, an intelligent camera and a control module, and the central control unit receives a signal sent by the mobile monitoring unit and controls the mobile monitoring unit; the monitoring model unit builds a virtual model in the belt vestibule through a digital twinning technology and a virtual technology, and after the virtual model is built, a monitoring scheme is formulated to manage a monitoring mode, and a prediction scheme is formulated to pre-judge a monitoring result. According to the system, flexible movement of the intelligent camera can be achieved, when a material overtemperature or material leakage accident occurs on the belt, real-time detection can be accurately carried out along with the accident occurrence position, and the running safety of the belt of the coking plant and the timeliness and accuracy of monitoring are improved.

The invention relates to desulfurization equipment for industrial waste gas in a coking plant and a desulfurization method thereof, belonging to the technical field of preparation of desulfurization liquid in the coking plant. The desulfurization equipment recycles water vapor generated after heat exchange use in the coking plant, and meanwhile, the dual temperature control requirements during preparation of a desulfurization solution and desulfurization treatment of industrial waste gas in the coking plant are met. The desulfurization equipment comprises a dosing room, a desulfurization tower and an intelligent adjustment control system. The water vapor generated after heat exchange in the coking plant is recycled and used for preparing the desulfurization liquid at the proper temperature, then the desulfurization liquid is used for desulfurization treatment of the industrial waste gas, and the temperature of the desulfurization liquid is adjusted to the target temperature by controlling the mixing ratio of the normal-temperature water and the water vapor in the whole process, so that the energy consumption is reduced. According to the invention, the dual temperature control requirements during preparation of the desulfurization liquid and desulfurization treatment of the industrial waste gas in the coking plant can be met at the same time, and the problems that surplus steam and condensate water in the coking plant are difficult to recycle, and the temperature of the desulfurization liquid does not reach the standard and the desulfurization efficiency is low due to fluctuation of the environment temperature in the coking plant are solved.

The utility model relates to the technical field of slag scraping devices, in particular to a rotary slag scraping device of a tar and ammonia water mechanical slag scraping tank of a coking plant, which comprises a tar and ammonia water slag scraping tank, and a cleaning component is arranged on the right side of the tar and ammonia water slag scraping tank; the cleaning assembly comprises two symmetrically-arranged supporting seats, a sewer pipe and an upper water pipe are fixedly installed between the two supporting seats and both penetrate through the back face of the supporting seat on the rear side, the rear end of the sewer pipe and the rear end of the upper water pipe are jointly communicated with a water injection pipe, and water spraying pipes are installed on the sewer pipe and the upper water pipe at equal intervals. A photosensitive screen is installed on the inner side of the front side supporting base in a screwed mode, an installation base is installed on the inner side of the rear side supporting base in a screwed mode, and an infrared laser emitting cylinder is fixedly installed on the side edge of the installation base. According to the utility model, the cleaning component is arranged, so that the residue scraping plate is cleaned once during each circulating residue scraping, the residue scraping plate is prevented from bringing residual scum into the tar ammonia water residue scraping groove again, and the residue scraping efficiency is improved.

The utility model discloses an intelligent monitoring alarm device for a coking high-risk area. The intelligent monitoring and alarming device for the coking high-risk area is provided for solving the problem that a monitoring device for the coking high-risk area cannot achieve real-time intelligent monitoring. The device comprises an explosion-proof box (8), and an ARM processor module (1), a temperature sensor module (2), a vibration sensor module (3), a gas sensor module (4), an alarm module (5), a LoRaWAN wireless remote transmission module (6) and a power supply module (7) which are arranged in the explosion-proof box (8), the ARM processor module (1) is connected with the temperature sensor module (2), the vibration sensor module (3), the gas alarm module (4), the alarm module (5) and the LoRaWAN wireless remote transmission module (6); the power supply module (7) supplies power to the whole system. The system can monitor environmental data of a coking process high-risk area in real time.

The invention relates to a sulfur foam liquid salt extraction and acid making coupling process, which comprises the following steps: carrying out solid-liquid separation on sulfur foam liquid to obtain a first solid material and a first liquid material, decoloring the first liquid material, and concentrating to obtain a slurry material and a second liquid material; the first solid material and the slurry material are incinerated, and first synthesis gas is obtained and used for preparing concentrated sulfuric acid; and cooling the second liquid material, and centrifuging to obtain ammonium thiocyanate. The sulfur foam liquid is subjected to solid-liquid separation, so that the waste liquid amount is reduced, the equipment volume in the salt extraction area is reduced, and the cost is reduced. An oxidation process in the salt extraction area is canceled, ammonium thiosulfate is subjected to high-temperature concentration and then is subjected to centrifugal separation to obtain crystals, the crystals and the separated ammonium sulfate are sent to the acid making area to be incinerated, and generated tail gas is sent to a desulfurization and denitrification section of a coking plant to be treated, so that emission without solid waste is realized, and maximum utilization of sulfur element and ammonium thiocyanate in sulfur foam liquid is realized.

The present application relates to a kind of combined fillings of microbial fuel cell for wastewater treatment, including four fillings of filler A, filler B, filler C and filler D, the filler A is adsorbed activated carbon, filler B is coking plant's crushed coke and coke powder, filler C is solid waste of chemical production recovery, filler D is blast furnace iron slag, four fillings in the combined filling are calculated with different material layer height, and the combination ratio is that filler A accounts for 50%~60%, filler B accounts for 20%~25%, filler C accounts for 10%~20%, and filler D accounts for 5%~10%.When coking wastewater is treated using microbial fuel cell, the production operation cost is reduced, and the fuel cell treatment efficiency is improved, and the solid waste discharge of steel plant is reduced.

The present application belongs to metallurgical technical field, and relates to a method for reducing concentration of sulfur trioxide in smelting roasting flue gas by using coking sulfur paste, comprising the following steps: 1) sulfur paste slurrying; 2) smelting roasting; 3) acid making purification. The present application uses sulfur paste waste residue as a reducing agent of oxygen and sulfur trioxide in flue gas, so that the sulfur paste waste residue reacts with oxygen to consume oxygen in flue gas and generate sulfur dioxide gas; at the same time, the sulfur paste and sulfur trioxide in flue gas have a reduction reaction, and the sulfur paste and sulfur trioxide are both converted into sulfur dioxide; the generation of waste acid by the combination of sulfur trioxide and water in the acid washing and purification process is inhibited from the source, the acid concentration of waste acid is significantly reduced, the utilization rate of sulfur is improved, the corrosion of equipment is reduced, the cost of waste acid neutralization treatment is reduced, the coking plant sulfur paste waste residue is consumed, the normal operation of the whole process is ensured, and the environmental protection benefit and economic benefit are remarkable.

This invention relates to a method for preparing a low-temperature denitrification catalyst using industrial by-products. The method involves mixing and grinding industrial solid waste vanadium-titanium smelting slag and coking plant dust, which is then used as a catalyst carrier. Metal ions from by-products such as electroplating sludge and electrolytic cation mud are precipitated and enriched using an acidic solution, and then used as catalytic particle elements. These particles are impregnated into the solid waste carrier, enriching the catalyst's catalytic performance and improving its efficiency. Under low-temperature conditions, CO in flue gas is directly used to reduce nitrogen oxides, achieving low manufacturing costs and low operating consumption. This method enables the reuse of industrial solid waste and by-products, reducing the environmental harm caused by the release of heavy metal pollutants. Compared to NH3-SCR denitrification technology, this technology eliminates the need to purchase liquid ammonia, ammonia water, or urea as reducing agents, reducing flue gas denitrification costs. It also solves problems associated with ammonia reducing agents, such as equipment corrosion, high storage and usage risks, inaccurate metering of reducing agents, and the potential formation of ammonium sulfate.

This invention relates to the field of wastewater treatment technology, specifically to a system and process for treating desulfurization and decyanation wastewater from coking plants. It includes an oxidation reactor and a horizontal centrifuge connected to the oxidation reactor. By incorporating an inclined plate, the stirring rod drives the inclined plate to rotate while stirring the solution inside the reactor. This causes the inclined plate to slide along the inner wall of the reactor, scraping off the supersaturated liquid film adhering to the inner wall and mixing it into the solution inside the reactor. This prevents excessive local supersaturation of the solution adhering to the inner wall, thereby reducing the precipitation of crystal nuclei on the reactor wall. The rotation of the inclined plate by the stirring rod generates a strong shearing effect on the inner wall of the reactor, scraping off the adhering microcrystals and preventing the precipitated crystals from continuously growing on the reactor wall. This reduces scale buildup on the inner wall of the reactor, thus increasing its service life and ensuring efficient heat transfer, thereby improving the quality of product crystallization.

The invention discloses VOCs tail gas treatment equipment for a coal gas purification system of a coking plant, and belongs to the technical field of tail gas treatment. Comprising an activated carbon adsorption tower, an exhaust funnel and a combustion box spray tower, a spraying mechanism is mounted at the upper end of the spraying tower, and a circulating mechanism is mounted at the lower end; a desorption mechanism is mounted between the activated carbon adsorption tower and the combustion box, and impurities on an adsorption carbon layer in the activated carbon adsorption tower are discharged into the combustion box for treatment through the desorption mechanism when the adsorption capacity of the activated carbon adsorption tower reaches a threshold value; the desorption mechanism comprises an upper desorption cylinder and a lower desorption cylinder, one end of the upper desorption cylinder is connected with a cooling assembly, and a recovery assembly is installed between the combustion box and the upper desorption cylinder; the primary purification effect is improved, the treatment efficiency is improved, and the problems that an existing device is poor in primary adsorption effect, turbine fan blades are prone to adsorbing particulate matter and blocking, the water consumption is large, the energy consumption is high, and shutdown cooling is needed are solved.

The catalytic oxidation system comprises a main pipeline, and the main pipeline is sequentially connected with a pipe heat exchanger, a buffer tank, a combustible gas detector, a flame arrester, a catalytic oxidation furnace and a PID non-methane total hydrocarbon analyzer. The system further comprises a plate type gas-gas heat exchanger and a frequency conversion fan, the plate type gas-gas heat exchanger and the frequency conversion fan are installed on the main pipeline and located between the catalytic oxidation furnace and the PID non-methane total hydrocarbon analyzer, and the plate type gas-gas heat exchanger is connected with the fresh air valve through a pipeline. Safe and efficient purification is achieved through a condensation pretreatment structure, a catalytic oxidation structure, a waste heat recovery structure and an emergency adsorption structure, and the device is suitable for tail gas containing combustible VOCs generated by carbonization furnaces, coking plants and the like.