102results about How to "Overcome blockage" patented technology

The invention discloses a bidirectional spiral electrostatic spinning device, and relates to an electrostatic spinning device. The bidirectional spiral electrostatic spinning device is provided with bidirectional threaded guide rods, liquid storage sliders, vertical slide bars, guide rails, a framework, a controllable injection device, a liquid guide pipe, a liquid distributing device, a high-voltage power source, air pumps, pressure regulating valves, air guide pipes, partition plates, motors, driven belt pulleys, driving belt pulleys, V-shaped belts, air hole arrays and collecting devices. The bidirectional spiral electrostatic spinning device has the advantages that large-area and multi-jet injection effects can be realized by the aid of the bidirectional threaded guide rods, so that the electrostatic spinning efficiency further can be improved, phenomena of electrostatic interference among spinning jets and electric field concentration can be reduced, uniform distribution of nano-fibers on collecting plates can be promoted, the thickness uniformity of collected nano-fiber membranes can be improved, the quality of the nano-fiber membranes can be enhanced, the multiple jets can be assuredly stably and quickly injected, and large-area uniform nano-membranes can be collected; the bidirectional spiral electrostatic spinning device is applicable to injection devices with different bidirectional threaded guide rods and different thread shapes, and the lengths, the quantities and the shapes of the bidirectional threaded guide rods of the injection devices can be different from one another.

The invention provides a double-helix boiler coal slime feeder, which is characterized by mainly comprising a coal slime feeding drum (3), a coal slime feeding helix and a feeding helix driving mechanism (4), wherein one end of the coal slime feeding drum (3) is connected with the feeding helix driving mechanism (4) and the other end of the coal slime feeding drum (3) is arranged on a boiler and is communicated with the interior of the boiler; a coal slime feeding hole (3) is formed on the coal slime feeding drum (3); the coal slime feeding helix comprises a first coal slime feeding helix (1) and a second coal slime feeding helix (2); and the feeding helix driving mechanism (4) comprises a power component and a transmission component. The double-helix boiler coal slime feeder has the advantages that: the feeder can be arranged at a plurality of positions of the boiler; the coal slime entering the boiler is fine granules so as to improve the combustion efficiency; and the problem that the coal slime is adhered to the feeding drum wall and the helixes is solved.

The invention provides a supercritical water oxidation treatment system and a supercritical water oxidation treatment system process for high-concentration dyeing sludge. After the high-concentration dyeing sludge is ground, the particle sizes of insoluble particles are reduced, and high-flow-speed suspension conveying can be realized; the sludge is further subjected to pyrohydrolysis, cell walls are broken and the viscosity is remarkably reduced; the sludge can be stably conveyed through a high-pressure diaphragm pump and enters into a heat exchanger for preheating, so that the required temperature is reached; subsequently, the sludge and oxygen jointly enter into an inlet in the upper part of a reactor, materials completely react in the up-down flowing process, organic matters are degraded and inorganic salts are separated out; the inorganic salts are secondarily dissolved by the cooling of a small amount of reacted clean fluid introduced from an inlet in the upper part of a third heat exchanger and sludge at the inner pipe side of a fourth heat exchanger; materials flow out of a cone base at the lower part of the reactor for heating soften water to generate steam and preheating the materials; cooled and reacted fluid is decompressed through coarse adjustment of a capillary step-down transformer and fine conditions of flow; decompressed fluid is separated through a pipeline filter to obtain a solid which is finally collected into a liquid collecting tank.

The invention relates to an evaporation wall-type supercritical water oxidation reactor capable of directly separating salt and subcritical water. The cylinder is fixed with an upper end cover and a lower end cover; the middle part of the upper end cover is provided with a burner component which extends to the inside of the cylinder; the upper end cover is provided with a gas-phase outlet and a sewage secondary inlet; the upper part in the cylinder is fixedly provided with a shell-and-tube heat exchanger; the upper part of the cylinder is provided with a sewage primary inlet and a normal temperature sewage outlet; the cylinder is provided with a subcritical water outlet; the lower part in the cylinder is fixedly provided with a multilayer evaporation wall; a plurality of annular spaces are formed between the multilayer evaporation wall and the cylinder from top to bottom; the cylinder is sequentially provided with a plurality of evaporation wall water inlets; the upper edge of the multilayer evaporation wall is provided with an evaporation wall spherical baffle; the lower end of the burner component is fixedly provided with a burner spherical baffle; and the bottom of the lower end cover is provided with a brine outlet. The oxidation reactor effectively prevents the preheater, reactor and pipelines from blockage and corrosion, reduces the quantity of pure water used by the evaporation wall, and can reduce the reactor volume and lower the noble alloy consumption.

A cold-pneumatic spray coating method and apparatus by feeding powder at downstream is disclosed. Said method includes such steps as heating the working gas, delivering it to upstream of the flow channel in Laval nozzle, using the carrying gas to deliver the metallic powder to be sprayed to the downstream divergent segment via powder delivering tube, accelerating it by working gas, and spraying it. The cross-section the flow channel in divergent segment is elliptical or the combination of ellipse and rectangle. Its advantage is no pollution and blocking of nozzle throat.

The invention discloses a supervision method for sending mass spam messages. By establishing two text message buffer areas which are alternately used, different batch interception processing strategies are adopted for mass-sending spam messages according to the different flow rates of cached messages and the frequency situation of spam messages in different time, thus being capable of effectively overcoming the problem that the traditional supervision method for sending mass spam messages causes the blockage of a message service center network and unreasonable supervision.

The present invention relates to cold gas powered spraying method and device for spraying metal powder to the surface of sample or workpiece to form coating. The present invention features that work gas is first heated, then fed to the converging section in the upstream of the nozzle flow passage, and expanded and speeded in the divergent section of the nozzle, while the metal powder to be sprayed is fed directly to the converging section in the upstream of the nozzle through the powder feeding channel and two powder exhausting holes in some angle with the axis of the nozzle. The present invention has no contamination and jamming of the nozzle caused by the sprayed powder and easy manufacture of the nozzle.

The invention discloses a supercritical water oxidation treatment and generation system of municipal sludge having high-solid content. The municipal sludge having high-solid content orderly enters a filter basin and a homogenizing basin to carry out pretreatment, and then is transported to the system to carry out supercritical water oxidation treatment by using a high-pressure diaphragm pump; high-temperature fluid after reaction is fully utilized to preheat feedstock when the system runs. Surplus heat generates super-high pressure steam to generate electricity by adopting a low oxidation coefficient; a supercritical zone is arranged at the upper part of a reactor; a subcritical zone is arranged at the lower part of the reactor; an inorganic salt separated out from the supercritical zone at the upper part of the reactor falls into the subcritical zone at the lower part of the reactor to be dissolved again by virtue of inertia and gravity; strong brine containing solid (insoluble salt) orderly enters a cooler and a capillary step-down transformer for cooling and decompression.

The invention relates to a three-dimensional electro-fenton water treatment method. According to the method, an involved device comprises a reactor, a porous electrode plate, an active carbon loaded zero-valent metal fenton catalyst, a water outlet, a water inlet, a positive electrode and a negative electrode; a reaction area is divided into a positive electrode electro-fenton oxidation area and a negative electrode ion reduction area through a reaction device by taking a three-dimensional intensifying electro-fenton oxidation method as a kernel, an electrode material comprises active carbon loaded zero-valent metal ion, nickel, copper, cobalt, platinum and silver or palladium, inlet water passes through the positive electrode electro-fenton oxidation area, metal ions are digested under the action of an electric field to form an area high-concentration ion solution to intensify homogeneous-phase fenton reaction; a reacted water body enters a negative pole reduction area, and the metal ions contained in the solution are reduced to a cathodic active carbon electrode for recovery; and the negative electrode ion reaction area can generate hydrogen peroxide through oxygen aeration, so that the usage amount of added hydrogen peroxide is reduced. A dyeing waste water treatment result indicates that the method disclosed by the invention can outstandingly increase the chrominance and removal efficiency of CODCr (Chemical Oxygen Demand) of dyeing waste water and achieves the national industrial waste water recycling standard of effluent water.

The present invention discloses a boat furrow forming device for synchronous furrowing in seeding, comprising a plow post and a forming frame for mounting the plow post; the forming frame includes two soil breaker plates, two shaping plates and two soil flattening plates, intersecting curves of soil breaking surfaces of the two soil breaker plates are edge curves, and every two of the two soil breaker plates, the two shaping plates and the two soil flattening plates are arranged symmetrically along a plane of the edge curves; the edge curves are exponential function curves, and surfaces of the two shaping plates are each a plow body surface. Furrows are formed through the action of the soil breaker plates, shaping plates and soil flattening plates upon soil, multiple experiments show that made furrows are trapezoidal furrows having clean bottom, smooth walls and uniform depth, and soil reflow can be effectively inhibited; during operation for viscous heavy caked high-moisture-content soil, the boat furrow forming device shows good trafficability, blocking and adhesion during equipment and soil acting are overcome, and the boat furrow forming device is convenient to mount to a combine harvester for use.

The invention relates to a high-efficiency silencing water surface or underwater driving technology. An air compressor / high pressure steam generator generates high pressure gas / steam, the gas outlet of the air compressor or high pressure steam generator is connected with a high pressure gas holder in parallel, the gas inlet of the air compressor or high pressure steam generator is connected with a low pressure gas holder / condenser in parallel, the high pressure gas holder is respectively connected with a boosting gas bag and an additional water ramjet subsystem, the low pressure gas holder / condenser is connected with the boosting gas bag, and the boosting gas bag is arranged in a guide pipe. The communication between a plurality of boosting gas bags and the high pressure gas holders or the low pressure gas holder / condenser is controlled to control expansion and contraction of the gas bags, the boosting gas bag is expanded to extrude the water in the guide pipe out, so as to generate athrust and drive a ship to move; the boosting gas bag contracts and the guide pipe is filled with water to be ready for jet flow at the next time; the direction of inlet outlet water in the guide pipe can be determined by controlling the open and close of water inlet outlet valves at the two ends of the guide pipe; and the process can be repeated to drive the ship to do various movements.

The invention discloses a highly clear methanol gas composition and its process for preparing. The said composition includes the following components: gas, carbinol and assisting solvent, in which the assisting solvent comprises methyl tert-butyl ether, toluene, 32# white oil, capryl alcohol, isobutanol, cleaning disperser, and corrosion inhibitor. The invented methanol gas has solved many problems existed in the prior methanol gas, has reduced the pollution to the environment caused by the traditional exhaust gas and largely improved the carbinol content, according to the percentage by weight, the carbinol content can reach 28.5 %-57 %, the methanol gas can not be stratified when storaged for 6 months at -10 DEG C-35 DEG C, and the invention has overcome the problems that the traditional methanol gas can cause corrosion to the engine and the oil pipeline and the spray bar are prone to block up. The process for preparing methanol gas of this invention is simple and easy to proceed.

The invention discloses a system and method for inducing vehicles to orderly enter a toll station, wherein the system comprises a vehicle detector, a traffic guidance screen and a calculation module;the vehicle detector is used for detecting the arrival condition of the vehicles in a toll collection square, and collecting the vehicle detection data of each toll collection channel; the traffic guidance screen is used for displaying the toll collection condition information of the toll collection channels so as to guide the vehicles to orderly enter the toll station; and the calculation moduleis used for counting the number of queuing vehicles in each toll collection channel according to the vehicle detection data, obtaining toll collection data, calculating estimated service time of eachtoll collection channel according to the toll collection data, and generating toll collection condition information according to the number of queuing vehicles and the service time. The traffic guidance screen is mounted on the traffic lane to publish queuing length, service time and other information of each channel in advance, a driver is guided to reasonably select a toll collection channel andchange lanes in advance before entering the toll station, the problems of highway toll collection square congestion, frequent traffic flow interleaving and the like are solved, and the method can bewidely applied to the field of traffic management and control.

The invention provides a roller-type self-adjusting polycrystalline silicon vibrating screening device, and relates to the field of mechanical equipment. The device mainly comprises an underbed, a screen box is arranged on the underbed, a damping spring is arranged between the underbed and the screen box, the lower surface of the screen box is provided with a vibration motor, the screen box is provided with a screen plate, the screen plate mainly comprises a framework, the two sides of the inside of the framework are provided with automatic adjusting devices, the insides of the automatic adjusting devices are hollow, the front end of each automatic adjusting device is provided with a shaft hole, the two sides of the hollow inner side of each automatic adjusting device are provided with springs, the springs on the two sides of each automatic adjusting device are connected with a shaft sleeve in a squeezing mode, the shaft sleeve of each automatic adjusting device corresponds to the shaft hole of the corresponding automatic adjusting device, the insides of the shaft holes of the automatic adjusting devices on the two sides are connected with a shaft, the shaft is provided with a roller, the two ends of the shaft are sleeved with the shaft sleeves, and the diameter of the shaft is smaller than that of each shaft hole. The screening device is high in screening precision, strong in processing capacity, simple in structure, little in energy consumption, low in noise, good in sealing performance, free of overflowing dust, convenient to maintain and capable of being used for automatic operations; the service life of a screen cloth is long.

Abstract of the Disclosure A Bose-Einstein condensate (102) of atoms is compressed and / or rapidly de-condensed in a reaction chamber (104) by a beam (109) in order to achieve nuclear fusion. A pre-formed Bose-Einstein condensate of atoms may be introduced into the reaction chamber (104), or the constituent atoms of the Bose-Einstein condensate may be introduced into the reaction chamber (104) with formation of the Bose-Einstein condensate from the constituent atoms occurring subsequently inside the reaction chamber (104). The constituent atoms of the Bose-Einstein condensate may be bosons, Fermions or both. The beam (109) is directed at and focused on the Bose-Einstein condensate so as to maximize the total compression of the Bose-Einstein condensate. Upon de-condensing, the Bose-Einstein condensate atoms fuse, releasing substantial amounts of energy. This energy is harnessed and used to drive a turbine (120) to run a generator (122).

The invention discloses a water treatment system with bidirectional cleaning function, and aims to provide a water treatment system capable of realizing bidirectional alternate cleaning. The upper water outlet of a double-end water outlet external-pressing membrane assembly is connected with an upper filtrate collecting conduit, while the lower water outlet is connected with a lower filtrate collecting conduit; the upper filtrate collecting conduit is connected with a first control valve and a second control valve; the lower filtrate collecting conduit is connected with a third control valve and a fourth control valve; the first control valve is connected in parallel with the third control valve and then is connected with a fifth control valve, a water pump and a seventh control valve in turn; one end of an eighth control valve is connected with a second connector of the water pump, while the other end is connected in parallel with the fifth control valve; one end of a sixth control valve is connected with a first connector of the water pump, while the other end is connected in parallel with the seventh control valve; and the second control valve is connected in parallel with the fourth control valve and then is connected with a residual cleaning solution outlet. The system can realize bidirectional alternate cleaning, improve the flushing effect on pollutants in a membrane cavity, and ensure the membrane cleaning efficiency and reflux recovery rate.

The invention discloses a straight-flow type pre-separating device for high temperature gas filtration and a filter of the device. The straight-flow type pre-separating device comprises a cylindrical main body, a helical diffuser axially arranged in the cylindrical main body, and a barrel-type outer cover sleeved at the outside of the cylindrical main body. The straight-flow type pre-separating device can be used for effectively reducing the dust load of a filtering unit and lowering the frequency of deashing by back flushing so as to reduce the heat impact from the back-blown airflow to a filtering pipe and prolong the service life of the filtering pipe; the pressure of the straight-flow type pre-separating device is reduced so as to reduce the operation energy consumption of the whole filtering system; the relation of the dust particle size and the filtering pipe can be rationally matched by the pre-separating device to overcome the phenomenon of the premature failure of the filtering pipe since the micropore is blocked by fine particles in the prior art; the straight-flow type pre-separating device cannot change the direction of the coming airflow, is convenient for the connection with the pipeline, and can be optimally arranged so that the filtering system structure is compact.

It relates to a current pressure reducing valve. It comprises a valve, valve core bar, pressure regulating cover, involucra, spring, spring base, regulating pressure screw, nut, epithelial pressure plate, O type ring of valve core bar, O type rings behind and before the pressure reducing valve base, pressure reducing valve base, seal gasket, seal gasket pressure plate, hexagonal cap, block and return hole, with inner thread on the valve fitting with the outside thread of the pressure regulating cap. It is reasonable, reliable in connection, convenient in installation, clean in working environment, endurable, good in performance and low in cost.

The present invention discloses a flue gas denitration porous organic catalyst and a preparation and application method. The components of the catalyst and the weight percentage content include 40-80 percent of humic acid, 2-20 percent of TiO2< / SUB, 2-20 percent of V2O5, 1-5 percent of polyurethane adhesive and 5-15 percent of water. The preparation method is that the humic acid, the TiO2< / SUB, THE V2O5, the polyurethane adhesive and the water are evenly mixed. Then, the mixture is extruded to be a honeycomb porous body through an extruder, which adopts a mode joint. The mixture is consolidated after drying. The prepared porous organic catalyst is arranged in a flue gas governance reactor. Ammonia is sprayed in a flue gas inlet port of the reactor. The humic acid reacts to NH3 to generate humic acidic ammonium. Under the function of the flue gas waste heat, the humic acidic ammonium is dehydrated to be amidohumic acid. And the amidohumic acid can further reacts to NOx in the flue gas to generate N2 and the humic acid. The present invention can realize the flue gas efficient catalytic denitration.

The invention discloses a solid-liquid filtering device. The device comprises a filter element and a cylindrical shell; the cylindrical shell is composed of a bottom plate and a cylinder wall, and thebottom plate is provided with a hole; the filter element is arranged in the cylindrical shell, and the filter element goes through the hole and goes out of the cylindrical shell; the filter element is composed of a buffer layer, a filter layer and a protective layer from the inside to the outside, and the lower end surface of the filter element is a convex surface; and the filter layer is made ofa flexible capillary fiber material, and the buffer layer is made of an elastic hydrophobic material. A material to be subjected to solid-liquid filtration is placed in the cylindrical shell, a liquid flows to the outside of the cylindrical shell from the inside of the cylindrical shell through capillaries formed by the flexible capillary fiber material under the action of gravity, and solid matters cannot be transferred to the outside of the cylindrical shell through the capillaries, so the purpose of solid-liquid separation is achieved. The buffering effect of the elastic hydrophobic material makes the capillaries not blocked even when the capillary material absorbs water and expands, so a problem that general filtering devices using flexible capillary fiber materials are prone to be blocked after meeting water and expanding. The solid-liquid filtering device is an energy-saving solid-liquid separation device. The solid-liquid filtering device can be combined with auxiliary pressurization or vacuum pumping and other technologies to further improve the working efficiency.

The invention discloses environment-friendly and energy-saving synthetic methanol gasoline. The environment-friendly and energy-saving synthetic methanol gasoline is characterized by comprising the following components in part by weight: 50 to 70 parts of methanol, 20 to 30 parts of gasoline, 10 to 25 parts of toluene and 1 to 3 parts of additive, wherein the additive comprises the following components in part by weight: 1 to 3 parts of oleic acid, 1 to 3 parts of methyl tertiary-butyl ether, 1 to 3 parts of tertiary butanol, 0.5 to 1.5 parts of acetone, 0.5 to 1.5 parts of petroleum ether, 0.5 to 1.5 parts of barium petroleum sulfonate and 0.5 to 1.5 parts of dodecane. The environment-friendly and energy-saving synthetic methanol gasoline has the characteristics that: the methanol content is high; the added additive can improve the combustion effect, so that fuel can be fully combusted; and the problems that the conventional methanol gasoline causes corrosion to an engine, oil pipelines and oil spraying nozzles are blocked in the using process and exhaust emission exceeds a standard are solved.

The invention relates to granular stearate, a preparation method thereof, and application of the granular stearate in the field of rubber and plastic. The stearate provided in the invention has granularity of 150 to 880 mu m, bulk density of 0.3 to 0.7 g / cm<3> and a heating loss no more than 1.5 wt%. The method provided in the invention comprises the steps of emulsifying stearic acid in an aqueous solution of a metal salt corresponding to the stearate under the condition of heating and adding an aqueous solution of sodium hydroxide. The stearate in the invention is granular, contains no dust and is environment friendly; when the stearate is used as a rubber and plastic auxiliary agent, it is convenient to add and measure the stearate, and production efficiency and quality of major products of rubber and plastic are substantially enhanced.

The invention discloses a vertical-parting casting ball and casting section die. A plurality of casting balls and casting section models and air vents (7) are arranged on a parting surface of a die body (1), shape of the casting balls and casting section models is a spherical casting section model (8), or the shape of the casting balls and casting section models is a cylindrical casting section model (21), a dead head (2) and an air vent (7) are equipped on the upper part of the parting surface, a dead head splitting area (5) which is communicated with the dead head (2) is arranged in the lower opening of the dead head (2), and a dead head splitting area air vent (9) is arranged on the upper part of the dead head splitting area (5) to cause the dead head splitting area (5) to be communicated with the outer of the die. By the technical proposal, bottle-neck blockage of the dead head during casting can be overcome, overflow of liquid metal can be avoided or reduced, smooth flow of the liquid metal in the casting cavity can be fully ensured, and the casting ball product quality can be ensured.

An apparatus for deeply treating the sewage features that the percolation treatment of sewage is divided into four segments: the organic substance (BOD) and suspended substances (SS) removing segment, NH4-N removing segment, NO3-N removing segment and soluble phosphate removing segment.

The invention relates to a device and method for measuring ammonia escape content in flue gas and ammonia escape content in smoke dust simultaneously. At present, no device and method which are accurate in measurement and capable of measuring ammonia escape content in flue gas and ammonia escape content in smoke dust simultaneously exist. The device is characterized in that one end of an air guide pipe is connected with one end of a sampling pipe, the other end of an absorption liquid supply pipe is connected with the air guide pipe, one end of a first air guide branch pipe and one end of a second air guide branch pipe are both connected with the other end of the air guide pipe, the other end of the first air guide branch pipe is connected with a first condensation cylinder, the other end of the second air guide branch pipe is connected with a second condensation cylinder, and an analyzer and a flowmeter are both connected with a single-chip microcomputer. The method comprises the steps that the first condensation cylinder and the second condensation cylinder conduct sampling alternately in sequence, the analyzer conducts analysis, the ammonia content in sampled flue gas is obtained, the flowmeter conducts measurement, the volume of the sampled flue gas is obtained, and thereby the ammonia escape concentration in the sampled flue gas is obtained. The device and method for measuring the ammonia escape content in the flue gas and the ammonia escape content in the smoke dust simultaneously are accurate in measurement, and the ammonia content in the flue gas and the ammonia escape content in the smoke dust can be measured simultaneously.

The invention relates to the field of shielding protection equipment, in particular to a lagging discharge preventing device and method for high-pressure flushing systems in shielding equipment, and aims at solving the problem that the stones with too large particle sizes or broken stones accumulated at the bottoms of warehouses cannot be carried out from the warehouses due to circulation so as tocause lagging discharge to the tunneling mud circulation deslagging systems in the prior art. The device comprises a mid circulation system which is connected with a reverse flushing branch; a mud inlet pump and a mud discharge pump are mounted on the trunk of the mud circulation system; and the trunk is connected with a tunneling branch, a maintenance and pressure maintenance branch, a bypass branch, a halt mud protection branch, the reverse flushing branch and a muddy water recovery branch. The device and method have the advantages of greatly reducing the lagging discharge of the circulation deslagging systems and being easy for manual operation.

The invention relates to the field of glass production and discloses tempered antibacterial glass and a preparation method and application thereof. The preparation method includes the steps of firstly, heating zinc nitrate and zinc carbonate until the zinc nitrate and the zinc carbonate melt to obtain first molten liquid, and performing first ion exchange on plain plate glass in the first molten liquid to obtain first cover plate glass; secondly, heating silver nitrate until the silver nitrate melts to obtain second molten liquid, and performing second ion exchange on the first cover plate glass obtained in the first step in the second molten liquid to obtain second cover plate glass; thirdly, heating potassium nitrate until the potassium nitrate melts to obtain third molten liquid, and performing third ion exchange on the second cover plate glass obtained in the second step in the third molten liquid to obtain the tempered antibacterial glass. The preparation method has the advantages that the prepared tempered antibacterial glass is good in tempering performance and antibacterial performance, and the problem of ion channel blocking during preparation can be avoided effectively.

The present invention relates to a perforated column type fractionating tower. It is an equipment for purifying arsenic trichloride. Said fractionating tower still, tower column and condenser, the top portion of said tower column is connected with said condenser, and its bottom portion is connected with the tower still. It is characterized by that the vertical tower column is formed from several sectional tower shell which are connected together, in the interior every sectional tower shell several horizontal trays are set, and connected with sectional tower shell wall, on every tray several perforated columns and one overflow tube are set, the top end of said perforated column is closed, and on the column wall at least one layer of air holes is set, the vertical overflow tubes of adjacent trays are alternatively arranged, and the lower portion of overflow tube of lowest one tray of tower column is equipped with a liquid seal ring.

The invention provides a treatment method of heavy oil in coal tar. The treatment method comprises the following steps of heating heavy oil of light oil extracted in coal tar to 360-380 DEG C, then conveying the heavy oil into an intermittent kneading machine for carrying out negative pressure distillation and separation, returning the light oil obtained by separation to a light oil hydrogenation device, feeding the rest of asphalt, namely modified asphalt with the high additional value and the particle size in the range from 3mm to 5mm into a liquid nitrogen device, cooling to below -15 DEG C to -20 DEG C, then feeding into a high-speed rotary type mill with the rotating speed of 800-1200r / min, and grinding the cooled asphalt particles into 0.0063mm-0.15mm powder when the cooled asphalt particles pass through a gap between a rotor and a stator. The treatment method has the advantages of short technological process and high light oil yield, and is easy to operate.

The invention discloses a waste heat comprehensive utilization system for a fluidized bed. The waste heat comprehensive utilization system comprises the fluidized bed, a flue gas pipeline, a slag discharge pipeline, a slag cooler connected to the slag discharge pipeline, and a waste heat boiler connected to the slag cooler, wherein the waste heat boiler comprises an air channel, a first water tank and a second water tank which are sequentially arranged at the outer side of the air channel in an air flow direction of the air channel; at least one first through hole is formed in the air channel which corresponds to the first water tank; the first through hole is provided with a spray tube section in a downward extending manner; a heat exchange barrel, which is concentric with the spray tube section and is arranged in the air channel, is arranged outside the spray tube section in a sleeved manner; the first through hole is provided with a water supply tube section in an upward extending manner; the top of the water supply tube section is arranged at the outer side of the first water tank; the water supply tube section communicates with the spray tube section; at least one second through hole is formed in the air channel which corresponds to the second water tank; a heat tube is inserted into the second through hole; the evaporation end of the heat tube extends into the air channel; and a condensation end of the heat tube extends into the second water tank.