31results 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 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 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 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 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 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 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.

The utility model belongs to the technical field of chemical production equipment, and discloses a tar residue separating device which comprises a liquefying tank, and a feed port of the liquefying tank is respectively communicated with a feed port of a diluted tar storage tank and a feed port of a raw material tar centrifugal machine through pipelines. A discharge port of the liquefying tank is communicated with a feed port of the tar residue centrifugal machine through a pipeline and a conveying pump; a solid material outlet of the tar residue centrifugal machine is communicated with a feeding hole of the dry residue storage tank, and a liquid material outlet of the tar residue centrifugal machine is communicated with a feeding hole of the recovered tar storage tank through a pipeline. According to the utility model, efficient separation and resource utilization of the tar residues are realized, the tar content in the obtained dry residues is low, the treatment is simple, and the harm to the environment is small.

The utility model belongs to the field of coal tar processing technology, and particularly relates to a light coal tar dewaxing device. The device comprises a feeding module, an adsorption module consisting of a first-stage fixed bed adsorption device and a second-stage fixed bed adsorption device which are connected in parallel, a recovery module and a control module, wherein the alternate operation of two-stage adsorption is realized by manually switching a control valve; during adsorption of a first-stage tower, a discharge valve is closed, and a second-stage tower can be started for supplementary adsorption; and after the adsorption is completed, switching to a desorption stage, and simultaneously switching to another tower for adsorption to realize continuous operation. A system pipeline of the device is coated with a thermal insulation material to ensure that light coal tar is kept in a gas form, a 5A molecular sieve adsorbent, N2 and other desorbents are adopted, real-time monitoring and thermal insulation measures are matched, the adsorption capacity and adsorption rate of n-alkanes can be improved, operation is easy and convenient, and design basic data are provided for industrial application.

The utility model relates to the technical field of coal tar, and discloses an oil residue separation device for coal tar recovery, which comprises a recovery component and a scattering component mounted on the upper surface of the recovery component, the recovery component comprises a recovery box, a discharge pipe is fixedly connected to the lower bottom surface of the recovery box, an oil outlet pipe is arranged on one side of the recovery box, and a sealing door is mounted on the recovery box. The scattering assembly comprises a scattering tank, a feeding opening is formed in the upper surface of the scattering tank, a motor is installed in the middle of the upper surface of the scattering tank, a stirring shaft is fixedly connected to the output end of the motor, and stirring blades are fixedly connected to the outer side surface of the stirring shaft; a heating pipe is installed on the outer surface of the scattering tank, the outer side surface of the heating pipe is covered with a protection shell, an oil discharging pipe is installed at the bottom of the scattering tank, by arranging the scattering assembly, the heating pipe is used for heating the scattering tank to reduce the viscosity of coal tar, and meanwhile blocky oil residues are scattered through stirring blades to facilitate discharging.

The present invention discloses a by-product purification and detection device based on coal gasification to produce SNG, which relates to the field of coal tar purification technology; in order to solve the reflux problem; specifically comprising a detection unit, a reflux pipe 1 and a reflux pipe 2, the inlet of the detection unit is connected to the outlet of the dehydration unit, the detection unit has three outlets, two of which are connected to the reflux pipe 1 and the reflux pipe 2 respectively, and the other outlet is used for discharging; the other end of the reflux pipe 1 is connected to the feed inlet of the water washing unit, and the other end of the reflux pipe 2 is connected to the connecting pipe; the detection unit includes a detection mechanism and a channel control mechanism, and the detection mechanism includes a slow flow shell, a resistor electrode head 1 and a plurality of resistor electrode heads 2. By setting up a detection unit, the present invention utilizes the relationship between the conductivity of the brine and the salt concentration and the relationship between the water content and the thickness of the water layer, thereby realizing the detection of the water content and the salt concentration, and then can also achieve targeted reflux according to the water content and the salt concentration to achieve re-processing, thereby ensuring the reliability of purification.

The invention provides a methane pyrolysis gas-solid separation method which comprises the following steps: 1) performing high-temperature pyrolysis on CH4-rich raw material gas to obtain mixed gas of hydrogen and tar steam; (2) carrying out two-stage cooling on the mixed gas obtained in the step (1); (3) carrying out heat exchange cooling on the mixed gas cooled in the step (2) by adopting air until tar is separated out to obtain tar and hydrogen, and collecting hot air obtained after heat exchange; and 4) burning the collected tar by using the hot air collected in the step 3), and preheating the feed gas by using high-temperature flue gas generated by burning. According to the methane cracking gas-solid separation method disclosed by the invention, the condensation efficiency of tar is improved, and decomposition and secondary reaction of the tar in a high-temperature stage are reduced; hot air after heat exchange is collected for burning tar, and high-temperature flue gas generated by tar burning is used for preheating feed gas again, so that cyclic utilization of heat is realized, and energy is further saved.

The utility model discloses a coal tar separating device, which relates to the technical field of coal tar production and comprises a bottom plate and a U-shaped plate, the U-shaped plate is fixedly arranged on one side of the upper surface of the bottom plate, a rotating rod is rotatably arranged in the middle of the upper surface of the bottom plate, and a rotating plate is fixedly arranged at the top end of the rotating rod. A first motor is fixedly arranged on the lower surface of the bottom plate, the output end of the first motor is fixedly connected with the lower end of a rotating rod, transmission rods are rotationally arranged in the two sides of the rotating plate, centrifugal barrels are fixedly installed at the lower ends of the transmission rods, and baffles abut against the two sides of a U-shaped plate; one side of the lower end of the U-shaped plate is rotationally sleeved with a transverse rod, and the two ends of the transverse rod are fixedly connected with the corresponding baffles respectively. According to the coal tar separator, the double centrifugal barrels are arranged, so that highly continuous coal tar separation work can be carried out, the time wasted by cleaning the centrifugal barrels can be reduced, and the production efficiency can be further improved.

The invention relates to a horizontal tar and ammonia water separation device and a working method thereof. The horizontal tar and ammonia water separation device comprises a tank body, a runner baffle, a tar and ammonia water inlet pipe, a heavy tar outlet pipe, a light tar outlet pipe and an ammonia water outlet pipe, one end of the tank body is provided with a tar ammonia water inlet; a light tar outlet, an ammonia water outlet and a heavy tar outlet are formed in the other end of the tank body; a plurality of runner baffles are arranged in the tank body at intervals along the tar ammonia water flowing direction to form a snakelike tar ammonia water runner; and a hydrophobic oleophylic material coating is sprayed on the surface of the runner baffle. According to the horizontal tar and ammonia water separation device, sufficient separation of light tar, heavy tar and ammonia water can be guaranteed, the separation efficiency is improved, the occupied area is greatly saved, and investment is saved; the problems that an existing tar and ammonia water separation device is poor in separation effect, long in tar and ammonia water retention time, large in equipment occupied area and high in total investment are solved.

The present invention discloses a slag removal device, which relates to the technical field of tar residue processing. The slag removal device includes a separator and a filter assembly. The separator includes a shell and a separation cylinder arranged in the shell. The shell is a hollow cylinder. The top of the separation cylinder is fixedly connected to the top surface of the shell. The bottom end of the separation cylinder is spaced apart from the bottom surface of the shell. The top surface of the shell is provided with a liquid outlet pipe, and the liquid outlet pipe extends into the separation cylinder. The bottom surface of the shell is provided with a slag discharge port. The side wall of the shell is provided with a liquid inlet pipe. The liquid entering the liquid inlet pipe can flow circumferentially along the inner wall of the shell. The filter assembly includes a first filter element, which is arranged in the separation cylinder and has a through hole. The slag removal device can separate tar residue without stopping the machine for cleaning, thereby improving the continuity of production and reducing the consumption of manpower and material resources.

The invention belongs to the technical field of catalysts for biomass gasifiers, and particularly relates to a nickel-based catalyst doped with rare earth elements and a preparation method of the nickel-based catalyst doped with the rare earth elements. Al2O3: 65%-70%; 3%-5% of MgO; 2%-4% of SiO2; and 2%-5% of rare earth elements. The catalyst has the advantages that the specific surface area is increased, the adaptive temperature range is widened, and the catalyst has high catalytic activity, excellent thermal stability, good anti-coking performance and long service life and is particularly suitable for tar cracking reaction of a biomass gasifier under the high-temperature condition. The porous graded pore structure design and the nano-particle dispersion technology reduce the adsorption and deposition of macromolecular hydrocarbons on the surface of the catalyst, and significantly reduce the risk of carbon deposition.

The present application relates to a coal pyrolysis tar recovery method and system, which passes oil mist and raw coal gas into a washing tower to make the oil mist and raw coal gas directly contact with washing oil for cooling, separates to obtain liquid phase coal tar and gas phase medium, and then the gas phase medium is sequentially cooled by an air cooler and a condenser to separate oil and water, the liquid phase solid-containing coal tar is fine filtered from outside to inside by a 0.1 micron metal sintered membrane filter under the condition of 260-280 DEG C and 1.0-1.2 MPa, the filter residue is discharged through a pressurized residue discharge valve, and the solid-removed coal tar is recovered by decompression fractionation to obtain washing oil and pure coal tar. By controlling the cooling temperature of the liquid phase coal tar to be 110-120 DEG C and using specific filtering parameters, the micron-level solid particles in the high-temperature viscous medium are efficiently removed. The method is suitable for efficient recovery of coal pyrolysis tar, the obtained washing oil can be recycled, and the pure coal tar can be directly used as fuel or chemical raw material.

The invention belongs to the technical field of functional application materials and coal chemical industry, and discloses an intelligent response type coal tar viscosity reducer and a preparation method and application thereof.The viscosity reducer serves as a novel intelligent material, the temperature and pH dual response mechanism is integrated into one molecule for the first time, the leap from a static material to a dynamic intelligent material is achieved, and the application prospect is wide. The viscosity reduction behavior of the viscosity reducer can be adaptively adjusted according to environmental conditions, the intelligent effects of strong viscosity reduction at low temperature / unfavorable pH and moderate viscosity reduction at high temperature / neutral pH are achieved, the dynamic requirements of a coal tar whole-flow process are perfectly matched, and the viscosity reducer has essential leap with a traditional viscosity reducer with fixed functions.

The application discloses a kind of coal tar phenolic compound separation device and process, polyether modified silicone oil compounding defoaming agent is added to boiler, coal tar and water, after preheating, it is mixed by first oil-water mixer, then enters second oil-water separator separation, obtains phenol-removing coal tar and water phase, water phase is sent to second oil-water separator, cooling, obtain water phase and crude phenol.The present application utilizes the solubility difference of phenolic substances and oil substances in water, thereby realizing the separation of coal tar to obtain crude phenol and phenol-removing coal tar, solving the problems of large energy consumption, complex operation process and serious environmental pollution in the extraction process of phenolic compounds in existing coal tar.The present application is a green separation process, without wastewater, waste residue and waste gas, and the process has mild and simple operating conditions, low cost and low investment.

The utility model provides a multifunctional filtering system for coal tar, which comprises a raw material liquid inlet, a soak solution inlet, a filter, a clear liquid outlet, a collecting tank, a gas buffer tank and a control subsystem, and is characterized in that the filter is connected with the raw material liquid inlet and the clear liquid outlet; the soaking liquid inlet is connected with the filter; the filter is connected with the gas buffer tank and the collecting tank; the collecting tank is used for collecting a sewage solution carrying sediments and a soaking sewage solution which are formed after the filter is subjected to backwashing; and the control subsystem can control the operation of the filtering system. The series connection mode of the filtering system realizes multi-stage filtering, and the two filters are connected in series for use, so that the filtering precision of the filtering system is greatly improved. According to the parallel connection mode of the filtering system, one filter is standby and the other filter is used, when one filter is used for backwashing, the other filter is automatically switched to work, the filtering system continuously filters, and the filtering efficiency of the system is improved.

The invention relates to the technical field of coal tar recovery, in particular to a coal tar pretreatment device which comprises a standing box, the bottom of the standing box is open, two symmetrically-distributed side plates are slidably connected into the standing box, the side plates are connected with a driving mechanism, and the driving mechanism is used for driving the side plates to move horizontally. The bottom of the standing box is rotatably connected with two turning plates which are symmetrically distributed, the top of each turning plate is fixedly provided with a sealing gasket, and the turning plates are connected with a rotating mechanism. The action not only enables viscous lower-layer materials accumulated at the bottom to become loose and flow more easily, but also is matched with downward turning of the turning plate to open the discharging channel, so that the lower-layer materials are effectively promoted to be discharged smoothly and completely under the action of gravity, and the problems of residues and blockage caused by the fact that the materials are adhered to the side plates and the inner wall of the standing box are solved. And the deslagging efficiency and the cleanliness are obviously improved.