49results about "Working-up tar" patented technology

The invention discloses an efficient biomass oil recycling and separating device, and belongs to the field of biomass fuel pyrolysis equipment. An efficient biomass oil recycling and separating device comprises a stainless steel cylinder, a spiral pipe surrounded by a stainless steel hollow pipe, a condensed liquid outflow pipe, a liquid containing barrel, a water inlet pipe, a water outlet pipe, a connecting pipe of the stainless steel cylinder, a pyrolyzing furnace gas exhaust pipe and the like. The device is characterized in that a spiral pipe surrounded by a stainless steel hollow pipe is arranged in a stainless steel cylinder, one end of the spiral pipe surrounded by the stainless steel hollow pipe is connected with a water inlet pipe, and the other end of the spiral pipe surrounded by the stainless steel hollow pipe is connected with a water outlet pipe; and the other end is connected with a gas pipe. The efficient biomass oil recycling and separating device has the advantages that gases with different boiling points can be condensed at different positions without consuming energy, and the gases are changed into pharmaceutical and chemical raw materials with high additional value.

The invention discloses an acid tar resource utilization and environment-friendly treatment method which is characterized in that a full-automatic acid tar fishing device is mounted at the top of an ammonium sulfate mother liquor circulating tank, and a conveyor is mounted at the top of the ammonium sulfate mother liquor circulating tank and located on the front surface of the full-automatic acid tar fishing device; the full-automatic acid tar fishing device comprises an acid tar fishing tank, an oil fishing cylinder is installed on the top of the acid tar fishing tank, and an oil fishing connecting rod is arranged at the position, located on the inner side of the acid tar fishing tank, of the bottom of the oil fishing cylinder. The fully-closed, full-flow and full-automatic operation process is used, tail gas in the production process is recycled, and acid tar subjected to hazardous waste treatment is recycled into a tar product for resource utilization, so that the health of operators is prevented from being harmed, transportation equipment is prevented from being damaged, and the production cost is reduced. Meanwhile, the problem of environmental pollution caused in the manual tar fishing operation and transportation process is solved, and a series of environmental protection problems in the coal blending process are effectively solved.

The invention discloses a byproduct purification detection device for producing SNG based on coal gasification, and relates to the technical field of coal tar purification. The problem of backflow is solved. The device specifically comprises a detection part, a first backflow pipe and a second backflow pipe, an inlet of the detection part is connected to an outlet of the dehydration part, the detection part is provided with three outlets, two outlets are connected to the first backflow pipe and the second backflow pipe respectively, and the other outlet is used for discharging. The other end of the first backflow pipe is connected to a feeding port of the washing part, and the other end of the second backflow pipe is connected to the connecting pipe. The detection part comprises a detection mechanism and a channel control mechanism. The detection mechanism comprises a slow flow shell, a first resistance electrode tip and a plurality of second resistance electrode tips. By arranging the detection part, the water content and the salt concentration can be detected by utilizing the relationship between the conductivity of saline water and the salt concentration and the relationship between the water content and the thickness of a water layer, and then the water content and the salt concentration can be subjected to targeted backflow to realize retreatment, so that the purification reliability is ensured.

The invention discloses a treatment device and a treatment method for acid tar in ammonium sulfate production by a saturator method, and belongs to the technical field of coking. The treatment device comprises a full flow tank, an acid tar conveying inclined pipe, an acid tar heating tank, a conveying pump and a mechanical clarifying tank, an outlet of the full flow tank is connected with one end of the acid tar conveying inclined pipe through a pipeline, an ammonia water conveying inlet is formed in the acid tar conveying inclined pipe, and the other end of the acid tar conveying inclined pipe is connected with the acid tar heating tank; a steam heating pipe inlet is formed in the bottom of the side wall of the acid tar heating tank; a liquid outlet in the bottom is connected with the mechanical clarifying tank through a delivery pump. The inclined angle of the acid tar conveying inclined pipe is set, ammonia water generated by coking is jointly introduced to clean acid tar adhered to the pipe wall, meanwhile, steam is introduced into the acid tar heating tank to melt the acid tar, and finally, precipitation separation is performed in the mechanical clarifying tank, so that the environmental pollution is obviously reduced, the labor intensity of post personnel is reduced, and the production efficiency is improved. And the problem of acid tar treatment is effectively solved.

This invention belongs to the technical field of solid waste pyrolysis and its energy-based applications, specifically relating to a water-washing purification system and method for high-temperature garbage pyrolysis oil and gas. This invention provides a system and method for purifying garbage pyrolysis oil and gas. These systems separate fly ash, tar, and acidic substances such as HCl and H2S from the garbage pyrolysis oil and gas, producing clean pyrolysis gas. This improves the calorific value of the pyrolysis gas, reduces corrosion of tar and acidic substances on pipelines and equipment, and ensures the stability and safety of system operation. Furthermore, through rapid cooling and removal of Cl ions, the formation of dioxins is eliminated.

The invention relates to a vertical multi-layer tar and ammonia water separation device and a working method thereof. The vertical multi-layer tar and ammonia water separation device comprises a tank body, a tar and ammonia water inlet pipe, a heavy tar outlet pipe, a light tar outlet pipe and an ammonia water outlet pipe, a plurality of layers of runner baffles are arranged in the tank body, a broken-line-shaped runner is formed in the height direction of the tank body, and the interior of the tank body is divided into a plurality of layers of separation chambers; the tar ammonia water inlet pipe is arranged at the bottom of the tank body; the side wall of the tank body at the lower end of the runner baffle is provided with a heavy tar outlet, and the higher end of the runner baffle is provided with a guide cylinder; a light tar outlet and an ammonia water outlet are formed in the top of the tank body. The vertical multi-layer tar and ammonia water separation device disclosed by the invention can ensure sufficient separation of light tar, heavy tar and ammonia water, improve the separation efficiency, greatly save the occupied area and save the investment.

The invention relates to the technical field of chemical additives, in particular to a coal tar emulsifying device which comprises a coal tar storage tank provided with a stirring mechanism used for preventing coal tar from being stirred, layered and solidified. The stirring mechanism comprises an upper side frame-type paddle arranged in the coal tar storage tank and a lower side frame-type paddle arranged at the bottom of the upper side frame-type paddle, an upper side turbo-type paddle is arranged on the inner side of the upper side frame-type paddle, an outer shaft sleeve is fixedly arranged at the axis of the upper side turbo-type paddle, and the outer shaft sleeve is fixedly connected with the upper side frame-type paddle. According to the invention, the layering or solidification phenomenon in the storage and transportation process is avoided, the fluidity of the coal tar is favorably improved, the uniformity of the coal tar in the emulsification process is ensured, and meanwhile, the coal tar and water or other emulsifiers form a stable emulsion through an emulsification technology, so that the fluidity of the coal tar is better; conveying and processing can be carried out more smoothly, and blocking and loss in the conveying process are reduced.

The utility model discloses an automatic tar discharging system of a clarifying tank. The automatic tar discharging system comprises a tar pipeline, a temperature measuring instrument, a moisture analyzer and a pipeline type flow meter, an inlet of the tar pipeline extends into the clarifying tank, and the moisture analyzer and the pipeline type flowmeter are mounted on the tar pipeline; the thermodetector extends into the clarifying tank, and a plurality of temperature measuring points are arranged on the thermodetector; an electric valve is further arranged on the tar pipeline, and the electric valve, the thermodetector, the moisture analyzer and the pipeline type flowmeter are all electrically connected with the controller; the automatic tar discharging system of the clarifying tank can solve the problems that the tar content in ammonia water exceeds the standard and the moisture content in tar exceeds the standard, and realizes automatic tar discharging in the whole process.

The utility model discloses a mechanical clarification tank tar supplementing and collecting device which comprises a clarification tank, a tail oil discharge pipeline and a separator, the input end of the tail oil discharge pipeline is communicated with the tail of the clarification tank, the output end of the tail oil discharge pipeline is communicated with the separator, a middle oil discharge pipeline is arranged in the middle of the clarification tank, and the input end of the middle oil discharge pipeline is communicated with the middle of the clarification tank. The output end of the middle oil discharge pipeline is communicated with the separator, the input end of the middle oil discharge pipeline is higher than the bottom end of the clarifying tank, a first observation opening is formed in the top end of the middle oil discharge pipeline, and a first closed observation device is arranged at the first observation opening. By arranging the middle oil discharge pipeline, tar is pressed out from the middle pipeline, the tar at the tail of the clarifying tank is reduced, the tar entrained in ammonia water is reduced, if the tar discharged for the first time is not thoroughly collected, the tar can be collected for the second time through the tail oil discharge pipeline, the emergency capacity of the clarifying tank is greatly improved, the yield of the tar is improved, and the quality of the ammonia water is better.

The invention relates to a coal pyrolysis tar recovery method and system.The method comprises the steps that oil mist and raw coke oven gas are introduced into a washing tower, the oil mist, the raw coke oven gas and washing oil make direct contact for cooling and separation, liquid-phase coal tar and a gas-phase medium are obtained, the gas-phase medium is subjected to two-stage cooling through an air cooler and a condenser in sequence, then oil-water separation is conducted, and the gas-phase medium is recycled; the method comprises the following steps: finely filtering liquid-phase solid-containing coal tar from outside to inside by adopting a 0.1-micron metal sintered film-coated filter element under the conditions of 260-280 DEG C and 1.0-1.2 MPa, discharging filter residues through a pressurized residue discharge valve, and carrying out vacuum fractionation on the solid-removed coal tar to recover wash oil and clean tar. By controlling the cooling temperature of the liquid-phase coal tar at 110-120 DEG C and adopting specific filtering parameters, high-efficiency removal of micron-sized solid particles in the high-temperature viscous medium is realized. The method is suitable for efficient recovery of coal pyrolysis tar, the obtained washing oil can be recycled, and the clean coal tar can be directly used as fuel or a chemical raw material.

The present invention discloses a carbonization furnace decoking device, including a carbonization furnace, wherein the furnace body of the carbonization furnace is connected to a first condensation bin and a second condensation bin, the first condensation bin and the second condensation bin are arranged in parallel through pipes and are provided with a placement cavity inside, a honeycomb condenser is placed in the placement cavity, the first condensation bin and the second condensation bin are connected by a pipe connecting the first heat exchanger and the second heat exchanger arranged in series, the first heat exchanger and the second heat exchanger are provided with a cavity inside, a heat exchanger is placed in the cavity, the other end of the second heat exchanger is connected to a pipe between a first filter element and a second filter element, the other end of the first filter element is connected to a first vacuum pump, and the other end of the second filter element is connected to a second vacuum pump. The present invention not only maintains good permeability through the honeycomb coal-shaped condenser, but also plays a role in collection and cooling.

The utility model discloses a device for preventing a biomass dry distillation pipeline from being blocked, which comprises a separating tower and a spraying tank, three layers of spraying components are arranged at the upper part of an inner cavity of the separating tower, and the spraying components are connected with the bottom of an inner cavity of the spraying tank through a pipeline; the bottom of the inner cavity of the separation tower is connected with the wood tar storage tank through a pipeline; one side of the bottom side of the inner cavity of the separation tower is connected with the top of the inner cavity of the spraying tank through a communicating pipe; a gas phase outlet in the top of the inner cavity of the separation tower is communicated with the bottom end of a condensation straight pipe through a pipeline, and the condensation straight pipe is fixedly connected to the top of the inner cavity of the spraying tank in the vertical direction; a spiral heat exchange pipe is wound on the outer portion of a main body of the condensation straight pipe, and a spiral clamping cavity is formed between the spiral heat exchange pipe and the outer wall of the condensation straight pipe. According to the device, mixed gas can be effectively cooled through three-layer spraying washing, wood tar precipitation and wood vinegar collection are accelerated, the production efficiency can be improved, pipeline blockage is reduced, and the production cost is reduced.

The utility model relates to the technical field of coal tar recovery, discloses a device convenient for recovering coal tar, and solves the problems of poor extrusion effect and low coal tar recovery efficiency caused by the fact that impurities remain on an extrusion component in a conical spiral extrusion process due to the fact that the impurities remain on the coal tar. Through the arrangement of the recycling box, the connecting pipe, the mounting plate, the fixing rod, the spring, the filter screen and the notch, coal gas enters the recycling box from the gas inlet pipe, the spring makes contact with the fixing rod and is squeezed, elastic force generated by squeezing can clamp and fix the fixing rod, the filter screen can filter residues of coal tar, and when residues on the filter screen need to be cleaned, the spring is squeezed, and the filter screen can filter the residues of the coal tar. At the moment, the fixing rod is pulled out, so that the filter screen can be taken out from the notch, and the filter screen is cleaned.

The utility model discloses a device convenient to recover coal tar, which relates to the technical field of coal tar recovery, and comprises a box body, a condenser pipe is arranged in the box body, one end of the condenser pipe is fixedly connected with an air supply pipe, one end of the outer wall of the air supply pipe close to the condenser pipe is fixedly connected with a first valve, and the bottom of the condenser pipe is fixedly connected with a discharge main pipe. A second valve is fixedly connected to the outer wall of the discharging main pipe, a discharging branch pipe is fixedly connected to one side of the outer wall of the discharging main pipe, a third valve is fixedly connected to the outer wall of the discharging branch pipe, an air outlet pipe is fixedly connected to the end, away from the air feeding pipe, of the condensation pipe, a filter screen is fixedly connected to the interior of the air outlet pipe, and a fourth valve is fixedly connected to the outer wall of the air outlet pipe. Liquid medicine is fed into the condensation pipe through the water pump to wash the condensation pipe, and the liquid medicine is prevented from entering other pipelines through the first valve, the second valve and the third valve; the heat preservation sleeve is matched with the heat preservation cotton to avoid temperature loss in the gas inlet pipe and prevent coal tar in gas from being solidified in the gas supply pipe.

The utility model discloses a device for quickly separating and extracting quinoline insoluble substances in coal tar, which comprises a separation box which is integrally of a big-end-up conical structure, a separation structure is mounted in the separation box and used for separating the quinoline insoluble substances, and the separation box moves circumferentially to accelerate separation of the quinoline insoluble substances; the feeding box is installed at the feeding area of the top of the separation box, a feeding port is formed in one side of the feeding box, a steam collecting pipe is arranged in the middle of the top of the feeding box, the bottom of the steam collecting pipe extends into the separation box, and the separation box and the feeding box rotate relatively. The evaporation structure is installed on the inner wall of the separation box and used for separating a solvent in the mixed liquid. According to the method, quinoline insoluble substances are separated from mixed suspension liquid in a centrifugal mode, separation of the quinoline insoluble substances is accelerated through a rotating separation box, separation liquid separated through a separation structure makes contact with an evaporation structure, liquid-liquid separation is carried out through the gasification temperature difference, and a solvent is collected in a steam mode; further, the separation of the quinoline insoluble and the separation of the solvent are completed.

The invention belongs to the technical field of biomass utilization, and particularly relates to a biomass tackifying modification and tar hydrogenation utilization process, which specifically comprises the following steps: selecting biomass, crushing, screening, preparing a framework material and a formed carbon main material, pyrolyzing, hydrogenating, desulfurizing and deoxidizing, mixing obtained solids to prepare a binder, and preparing formed carbon through the binder. According to the method, hydrogen is not used as a raw material, and biomass is subjected to hydrolysis modification by utilizing a supercritical / subcritical system, so that the biomass has an adhesive function and participates in subsequent biomass carbon preparation. The hydrogenation tackifying process of the waste biomass solid and the hydrogenation deoxidation and desulfurization process of the biomass tar are realized, and the green low-carbon cycle development of the biomass is realized.

The efficient and rapid emulsifier comprises the following raw materials in parts by weight: 30-40 parts of an ether auxiliary agent, 30-40 parts of an amino auxiliary agent, 4-8 parts of sodium carbonate, 3-6 parts of sodium chloride, 3-5 parts of sodium dodecyl benzene sulfonate, 6-8 parts of octylphenol polyoxyethylene ether and 12-18 parts of polyacrylamide. According to the efficient and rapid emulsifier and the preparation method thereof, the prepared emulsifier has good emulsification stability and emulsification effect.

The utility model discloses a tar filtering device which comprises a vacuum system, a filter tank, a tar adsorption layer and a filter layer, the tar adsorption layer and the filter layer are sequentially arranged in the filter tank, and the filter layer comprises a filter aid layer and a filter paper layer. The tar adsorption layer is used for adsorbing tar, the filter aid layer is composed of a filter aid with a certain thickness, the filter paper layer comprises at least one layer of filter paper, and the tar adsorption layer, the filter aid layer and the filter paper layer are sequentially arranged above a sieve plate of the filter tank from top to bottom; and a connector is arranged at the bottom of the filter tank and is connected with a vacuum system. A series of problems caused by tar blockage are solved.

The present invention discloses a method and device for tail gas treatment in tar processing, relating to tail gas treatment technology, including a discharge pipe. A loading arm is used to drive the discharge pipe to be docked with the tank truck interface. A docking mechanism is installed at the pipe orifice of the discharge pipe. The docking mechanism includes an inner connecting pipe and an outer connecting pipe that are sleeved with each other. An exhaust chamber is formed between the outer side wall of the inner connecting pipe and the inner side wall of the outer connecting pipe. The exhaust chamber is used to discharge the gas in the tank. The present invention provides a method and device for tail gas treatment in tar processing. When the outer connecting pipe is docked and sealed with the tank truck interface, liquid asphalt is output through the inner connecting pipe. At this time, the gas in the tank and the gas volatilized from the liquid asphalt are centrally discharged into the outdoor environment or the recovery space through the exhaust chamber. In this way, the original gas in the asphalt tank truck and a large amount of yellow asphalt fumes volatilized from the high-temperature liquid asphalt are centrally treated, avoiding environmental pollution and ensuring the physical health of the staff.

The utility model discloses coal tar pretreatment equipment, and relates to the technical field of coal tar pretreatment, the coal tar pretreatment equipment comprises a shell, the outer side of the shell is provided with a treatment mechanism, the two sides of the bottom end of the shell are both provided with two supports, the two supports are both fixedly connected with the shell, and the outer side of the shell is provided with the treatment mechanism. The processing mechanism comprises a fixing plate, and the fixing plate is located on the top of the shell. According to the coal tar pretreatment equipment, by using a motor, an annular plate can move up and down, when the annular plate moves downwards, a steel wire rope is stretched, a pushing plate moves downwards, a lifting plate moves upwards through stretching of the steel wire rope, the inner wall is scraped, coal tar adhering to the interior of a shell is reduced, and the pushing plate moves downwards; the coal tar treatment device can push the impact block to move to impact the inner wall of the shell, coal tar on the inner wall of the shell is accelerated to fall off, the coal tar can be comprehensively pretreated during treatment, and follow-up treatment is facilitated.

The present invention relates to an ammonium sulfate mother liquor acid tar separation device and an operation method thereof, belonging to the technical field of chemical equipment, comprising a full flow tank, a mother liquor storage tank, an air spray tower, a spray pump, an exhaust gas fan and a small mother liquor pump, a sealing top cover is installed on the top of the full flow tank, a water seal structure is arranged on the sealing top cover, a concentrated sulfuric acid feeding pipe and a saturator full flow mother liquor feeding pipe are arranged above the full flow tank, the concentrated sulfuric acid feeding pipe and the saturator full flow mother liquor feeding pipe are connected with the water seal structure together and inserted into the bottom of the full flow tank, the small mother liquor pump is connected with the acid tar pipeline via a second valve, and the full flow tank acid tar outlet is connected with the air spray tower via the acid tar pipeline. The present invention realizes the sealing of the top space of the full flow tank, effectively solves the problem of full flow tank tail gas recovery and acid tar separation, has a simple structure, low equipment investment and operation cost, high waste gas treatment efficiency, good acid tar separation effect, and has significant application and promotion value.

The utility model discloses coal tar separation equipment which comprises a frame and a tank body, wherein a bearing of the tank body is connected to the top surface of the frame in a penetrating manner; the feeding pipe is fixedly arranged in a manner of penetrating through the upper end of the side wall of the tank body, and a valve is arranged on the feeding pipe; the discharging pipe is fixedly arranged in a manner of penetrating through the bottom surface of the tank body, and a valve is arranged on the discharging pipe; the housing is fixedly mounted on the top surface of the frame; the driving mechanism is arranged on the inner wall surface of the right side of the housing; the uniform heating mechanism is connected with the driving mechanism; and the stirring mechanism is connected with the uniform heating mechanism. The coal tar separation equipment can fully stir raw materials in various stirring forms, ensures uniform heating of the raw materials, can better promote separation work of coal tar, is beneficial to improvement of coal tar separation efficiency, and is simple, convenient and flexible to operate and high in practicability.

The utility model relates to the field of coconut shell carbonization, in particular to an environment-friendly coconut shell carbonization furnace which comprises a carbonization box body, a right exhaust pipe is arranged at the top of the carbonization box body, a carbonization cavity is formed in the carbonization box body, a coconut shell placing plate is horizontally mounted at the bottom of the carbonization cavity, and a filter plate is mounted at the bottom of the coconut shell placing plate. Coconut shells needing to be carbonized are placed through the coconut shell placing plate, liquid generated in carbonization is discharged through the liquid discharging holes in the coconut shell carbonization process, impurities in the liquid can be effectively filtered through the arranged filter plate, and finally the impurities are collected through the liquid collecting ball, so that when the coconut shells are carbonized through the charcoal fire furnace, the impurities can be effectively removed through the liquid collecting ball. According to the device, the generated liquid can be effectively collected, acetic acid, methanol, wood tar and the like in the liquid can be subsequently extracted to serve as raw materials of fuel, the liquid can be collected while the gas is collected, the fuel of a charcoal stove can be prepared, the cost is reduced, and the environmental protection value is improved.

The invention is applicable to the technical field of tar residue filtering, and provides a tar residue filtering device for coal tar processing, which comprises a separating and filtering box, a feeding channel and a plurality of filtering and discharging mechanisms, the feeding channel is fixedly communicated with the top of the separating and filtering box, and the plurality of filtering and discharging mechanisms are uniformly arranged at the bottom of the separating and filtering box. The filter is used for filtering tar and discharging; the filtering and discharging mechanism comprises a tar collecting box, a discharging pipe, a filtering plate and a dredging mechanism, the tar collecting box is fixedly mounted at the bottom of the separating and filtering box, and the discharging pipe is fixedly communicated with the bottom of the tar collecting box. According to the tar residue filtering device for coal tar processing, the filtering holes are dredged from bottom to top through the dredging mechanism, it is ensured that tar can continuously and smoothly pass through the filtering holes, due to the fact that the dredging mode from bottom to top is adopted, impurities can be more easily reserved in the separating and filtering box and are not prone to falling into the lower portion to be mixed into the tar again, and the whole filtering device is purer.

The invention discloses a polyamide-PTFE composite nanofiltration membrane, a preparation method and a method for extracting o-methylphenol from coal tar, the polyamide-PTFE composite nanofiltration membrane comprises a separation layer and a support layer, and the separation layer is a polyamide membrane prepared by adopting a reverse interfacial polymerization method. And the supporting layer is a polytetrafluoroethylene nanofiltration membrane. According to the separation layer, a polyamide membrane contains a large number of amide groups which can form hydrogen bonds with hydroxyl groups in o-methylphenol in coal tar, so that the o-methylphenol is adsorbed on the surface of the polyamide membrane. The polyamide-PTFE composite nanofiltration membrane prepared by the preparation method disclosed by the invention shows excellent nanofiltration performance in an organic solution. The rejection rate of the polyamide-PTFE composite nanofiltration membrane to o-methylphenol can reach 26.1-60.6%, and the permeation flux of an organic solvent can reach 15-30 L.m <-2 >. Bar <-1 >. S <-1 >. In addition, the polyamide-PTFE composite nanofiltration membrane is relatively high in stability, can keep stable interception performance under 15-day continuous operation, and has a very good industrial application prospect.

The utility model relates to the technical field of saucepan blanking, in particular to a tar residue scraping structure, which comprises a channel plate arranged at a tar discharge port. According to the slag scraping device, the output end of the driving motor in the slag scraping device drives the synchronous belt wheel to rotate, so that the two winding wheels can drive the connecting rope to rotate in a winding mode, the end of the connecting rope can drive the movable plate and the n-shaped columns to slide along the limiting grooves, and the two n-shaped columns are driven to move away from each other; the horizontal U-shaped column is driven by the driving motor to rotate, so that the scraper plates can be driven to scrape the tar residues on the intercepting plate, then the driving motor reversely drives the two winding wheels to rotate reversely, and the horizontal U-shaped column slides to the original position under the extrusion of the reset spring, so that the two scraper plates can scrape the tar residues in a reciprocating manner, and the scraped tar residues can be discharged through the discharging plate. Therefore, the slag scraping efficiency of the tar separator can be improved.

The invention discloses a pretreatment system and method for high-chlorine-containing medium- and low-temperature coal tar, comprising a tar raw material tank, a raw material preheater, a desalting tank, a low-chlorine tar tank, and a desalted water cooler, an oil-water separation tank, an alkali liquid tank, an ammonia still, and a multiple-effect evaporator connected by pipelines. The high-chlorine-containing medium- and low-temperature coal tar is mixed with water and then enters the preheater for preheating and is transported to the desalting tank. After multi-stage desalination, the tar finally enters the low-chlorine tar tank, and the wastewater is cooled by the desalted water cooler and enters the oil-water separation tank; the tar in the oil-water separation tank is transported back to the tar raw material tank, and the wastewater and the alkali liquid from the alkali liquid tank are mixed and sequentially passed through the ammonia still and the multiple-effect evaporator; the ammonia water at the top of the ammonia still and the concentrated liquid at the bottom of the multiple-effect evaporator are recycled, and the fresh water at the top of the multiple-effect evaporator is returned to the desalting tank for recycling. The present invention can effectively reduce the chloride ion content in medium- and low-temperature coal tar, recycle and reuse desalted wastewater, and greatly reduce the cost of water treatment.

The invention is applicable to the technical field of tar treatment, and provides a coal pitch tar treatment device, which comprises a heat preservation outer tank, and a pretreatment inner tank, a material gathering guide hopper, an external expansion guide hopper and an annular filter plate which are arranged in the heat preservation outer tank, an opening is formed in the bottom of the inner pretreatment tank, the top of the inner pretreatment tank is fixedly connected with the inner wall of the top of the outer heat preservation tank, the material gathering and guiding hopper is fixedly installed at the bottom of the inner pretreatment tank and used for guiding and gathering tar, and the outer edge of the material gathering and guiding hopper is fixedly connected with the inner wall of the outer heat preservation tank. According to the coal pitch tar treatment device provided by the scheme, the design of the annular filter plate and the plurality of rows of filter holes is adopted, so that the filter area is effectively increased, and the tar filter efficiency is improved; meanwhile, a plurality of groups of dredging mechanisms are arranged, so that the blocked filtering holes can be timely cleaned, and the filtering channel is kept unblocked; the solid impurity content of the coal tar subjected to fine filtration is greatly reduced, and the quality of the finished fuel oil product is effectively improved.

The present invention relates to a method and system for recovering valuable aromatic components from styrene tar, which includes: (1) mixing styrene tar with a depolymerization solvent in a mixer and then feeding it into a separator. After standing and separating layers, the upper depolymerized liquid is fed into a first polymerization inhibitor filter; (2) adding a sedimentation agent S1 to the first polymerization inhibitor filter. After sufficient reaction and filtration, the filtrate F1 enters a second polymerization inhibitor filter; (3) adding a sedimentation agent S2 to the second polymerization inhibitor filter. After sufficient reaction and filtration, the resulting filtrate F2 enters an aromatic hydrocarbon separator; (4) recovering the solvent in the aromatic hydrocarbon separator, and the remaining liquid is the recovered aromatic hydrocarbon. The method of the present invention has the advantages of good recovery effect, good quality of the recovered aromatic hydrocarbon, relatively low recovery cost, and no secondary pollution, etc.

The invention discloses a Ni / porous carbon composite catalyst and a preparation method and application thereof.The preparation method comprises the steps that zinc acetate, a template agent and nickel nitrate are dissolved in methyl alcohol, and a solution A is obtained through ultrasonic treatment; adding a methanol solution of 2-methylimidazole into the solution A, and reacting to obtain Ni / ZIF-8; adding Ni / ZIF-8 into the organic ligand solution, carrying out a hydrothermal reaction, and calcining the product in a nitrogen atmosphere to prepare a product B; and soaking the product B in an acid solution to prepare the Ni / porous carbon composite catalyst. The Ni / porous carbon composite catalyst prepared by the preparation method has a relatively large specific surface area, good stability and a controllable pore diameter and gap structure, and the problem that the catalyst is easy to inactivate is effectively avoided. The Ni / porous carbon composite catalyst prepared by the invention is combined with a low-temperature plasma technology, shows excellent catalytic activity and stability in a tar reforming process, and has a good application prospect.