39results about How to "Guaranteed interception effect" patented technology

The invention relates to a preparation method and applications in supported catalysts of a carrier type titanium dioxide ultrafiltration membrane. According to the preparation method, a ceramic membrane is used as the support body, the self-growing phenomenon of titanium dioxide particles at high temperature is utilized, a titanium dioxide ultrafiltration membrane layer with high flux and tortuosity is formed on the surface of the ceramic membrane support body through the interweaving of titanium dioxide nanorods and calcining, thus the tortuosity and loose degree of the membrane layer can be effectively increased; an enough space is provided for supporting catalysts on the basis of ensuring the retention capacity of the original ceramic membrane; and the overall functionalization of the ceramic membrane is realized, namely the ceramic membrane supporting of multiple catalysts is realized and the product can be used in the fields such as photocatalysis, catalytic ozonation, catalytic hydrogen peroxide oxidation and catalytic wet oxidation.

The invention discloses a self-adaptive ship-intercepting method. The method has the following advantages that: the method overcomes the problem that because buoys and intercepting cables can be pressed into water by ships in the past, the anti-collision intercepting facilities can fail; moreover, because buoys and intercepting nets normally horizontally float on the water surface and the lengths of the buoys and the intercepting nets do not have affection on the stability of the whole system, the lengths of both the buoys and the intercepting nets are not limited, thereby the intercepting effect is ensured, and moreover, when the intercepting system used in the method normally horizontally floats on the water surface, sight on the sea surface cannot be affected; in addition, the intercepting system used in the method has the advantages of low construction cost, high economical efficiency, long service life and convenient replacement and maintenance; and moreover, the method can be flexibly transported to different places for use, and can change the arrangement position of the intercepting system.

The invention relates to a method for preparing a polyvinylidene fluoride hollow fiber membrane. The method comprises the steps of the preparation of a membrane liquid and the preparation of hollow fiber membrane silks, and specifically comprises the following steps of: injecting the membrane liquid and an internal gel medium into a latent solvent, namely external gel medium No. 1 of polyvinylidene fluoride by using an annular spinneret plate, drawing by using a group of traction wheels, and then making the obtained product enter gel medium No. 2, namely desalted water which is a non-solvent of the membrane liquid to ensure that the membrane silks are subjected to phase exchange formation quickly. The elasticity and flexibility of the hollow fiber membrane obtained by the method are greatly improved on the premise of ensuring higher pure water flux and strength to ensure that the membrane is more suitable for high-turbidity water quality treatment in which frequent gas washing and brushing are required, and only the stretch deformation of local membrane silk networks is caused during the gas washing and shaking of the membrane silks and the filter capacity of structural holes of other networks of the membrane is not damaged, so that the filter capacity of a membrane module cannot be influenced.

The invention relates to the technical field of access control design, An adjustable vehicle access control is disclosed, including the security gate box, A car stop lever comprises a connecting railconnected at one end to a safety guard road brake box, and an adjustable rail rod which is slidably connected with one end of the connecting rail, wherein the end of the connecting rail is far from the safety guard road brake box. A mounting bar is arranged on the connecting rail, the mounting bar is provided with a connecting groove for inserting after the upper side of the adjusting rail is moved, the upper side of the adjusting rail is provided with a rack embedded in the connecting groove, A sliding block is arranged on one side of the rack, a sliding groove for embedding the sliding blockis arranged on the inner wall of the connecting groove, a driving motor is arranged on the connecting rail, a gear meshed on the rack is connected on the output shaft of the driving motor, and a control device for driving the driving motor to rotate forward is also arranged on the connecting rail. The control device drives the gear to rotate so as to drive the rack to move, so that the adjustingrail can move toward the connecting groove, the length of the car stop rod is reduced, and small vehicles such as tricycles and the like can pass through the entrance guard.

The invention discloses a safety verification system, a safety verification method and a safety verification device. The method comprises the steps of a first server: wherein when a webpage runs a logged-in target application through a browser, the first server monitors the behavior data generated by behaviors used for operating the webpage, and judges whether the behavior data have risks or not;a server communicated with the first server and used for generating a verification identifier and sending the verification identifier to the webpage under the condition that the behavior data has risks; a terminal used for scanning and analyzing the verification identifier to obtain an analysis result, wherein the server is also used for verifying the behavior data according to the analysis result. The technical problem that in the prior art, the crawler interception effect is poor is solved.

The invention belongs to the technical field of organic solvent nanofiltration membrane separation, and particularly relates to a regular layered inorganic-material solvent-resistant nanofiltration composite membrane and a preparing method thereof. The composite membrane is a composite membrane prepared through vacuum filtration. The composite membrane shows higher nanofiltration performance thansolvent-resistant nanofiltration membranes prepared by traditional methods.

The invention discloses a tramcar derailing preventer for mine inclined shafts and belongs to the technical field of tramcar derailing prevention for inclined shafts. The tramcar derailing preventer for mine inclined shafts comprises a winch and an arrester. The winch is connected with a rotary encoder. The arrester driven by an oil cylinder comprises a mesh curtain and wire ropes. The rotary encoder is connected with the oil cylinder through an electric cabinet. The electric cabinet is connected with a PLC (programmable logic controller) module. Buffers are symmetrically arranged on the inner side of a rail below the oil cylinder and are connected with the arrester through the wire ropes. A car stopper is disposed on the inner side of the rail between the winch and the electric cabinet and is connected with the electric cabinet. Both the winch and the oil cylinder are driven by a motor. The tramcar derailing preventer for mine inclined shafts has the advantages that the travel of the oil cylinder is reduced, opening-closing time of the arrester is shortened, work efficiency is improved, joint locking is achieved, the arrester closes and opens automatically, blocking effect is ensured, derailing hazard is reduced, and the tramcar derailing preventer for mine inclined shafts is easy to maintain and suitable for application in production operations.

The invention relates to a rapid assembly type flood prevention retaining wall and an application method thereof. The rapid assembly type flood prevention retaining wall comprises a chair-shaped plate bottom plate and a chair-shaped plate vertical plate. The chair-shaped plate vertical plate is vertically arranged at the end of the chair-shaped plate bottom plate, and an L-type chair-shaped plate is formed. Multiple protruding protrusions are arranged on the L-type chair-shaped plate formed by the chair-shaped plate vertical plate and the chair-shaped plate bottom plate. The protrusions are in arc transition at the joint of the chair-shaped plate vertical plate and the chair-shaped plate bottom plate. The chair-shaped plate bottom plate and the chair-shaped plate vertical plate are provided with clamping mechanisms used for adjacent rapid assembly type flood prevention retaining walls. The rapid assembly type flood prevention retaining wall has the beneficial effects that the structure is simple, design is reasonable, and mounting and using are convenient; manpower and time needed for carrying and laying are greatly saved; invasion of instant storm flood is effectively stopped; and various communal facilities and commercial and home environments are protected from water logging threats.

The invention discloses a refuse intercepting device for a wetland. The refuse intercepting device for the wetland comprises a base; positioning rods are arranged on the two sides of the base; fixingrods are arranged below the base; stones are arranged in the base; a conical head is arranged at the lower end of each positioning rod; auxiliary rods are arranged on each positioning rod in an inclined manner; a soft net is arranged above the base; a hard net is arranged above the soft net; a floating block is arranged above the hard net; floating rods are arranged on the two sides of the hard net and the floating block; a chute is formed in each positioning rod; each floating rod extends into the corresponding chute; a positioning block is arranged below each floating rod; an intercepting frame is arranged above the floating block; a frame is arranged on each of the two sides of the intercepting frame; and each frame is fixedly connected with the corresponding floating rod. According tothe refuse intercepting device for the wetland, the fixing capacity of the positioning rods can be enhanced by arranging the base and the fixing rods, so that the equipment can work stably in water.

The invention relates to a preparation method of a high-flux loose hollow fiber nanofiltration membrane, which is characterized by comprising the following steps: (1) dissolving metal silver salt in water to prepare a metal silver salt solution, adding ethylenediamine into the metal silver salt solution, and stirring to obtain a uniform water phase solution, (2) soaking the hollow fiber ultrafiltration membrane into the prepared aqueous phase solution, taking out the hollow fiber ultrafiltration membrane after soaking, and removing the residual solution on the surface of the hollow fiber ultrafiltration membrane, (3) soaking the hollow fiber ultrafiltration membrane obtained in the step (2) into the prepared oil phase solution, and carrying out interfacial polymerization reaction on the surface of the hollow fiber membrane, and (4) taking out the hollow fiber ultrafiltration membrane obtained in the step (3) from the oil phase, drying, soaking in a salt solution, taking out, and cleaning with pure water to obtain the hollow fiber nanofiltration membrane. The silver chloride nanoparticles can be uniformly distributed in the ultrathin separation layer in an in-situ production mode, and the flux is greatly improved while the interception performance of the nanofiltration membrane is guaranteed through holes formed after the nanoparticles are dissolved.

The invention discloses a two-dimensional MXene-based oil-water separation membrane and a preparation method thereof, and belongs to the field of materials. The preparation method comprises the following steps: preparing T-ZIF-8 nanoparticles by a modification method of constructing a surface metal-phenolic aldehyde coating on the surface of ZIF-8 through TA; the method comprises the following steps: stripping MAX by using a LiF and HCl mixed solution to obtain a two-dimensional MXene material with a clear lamellar structure; the method comprises the following steps: ultrasonically mixing an MXene dispersion solution and a T-ZIF-8 dispersion solution, and constructing the T-ZIF-8-MXene composite membrane by using a CA membrane as a support layer in a vacuum filtration manner, and using the T-ZIF-8-MXene composite membrane for oil-water separation in industrial wastewater. According to the invention, the two materials T-ZIF-8 and MXene are creatively combined to construct the oil-water separation composite membrane with high permeation flux and strong pollution resistance, and the barrier that the MXene membrane can only be used for separating soluble small molecules is broken. The membrane is highly stable under complex chemical conditions, and has high treatment efficiency and recyclability, so that the purposes of reducing the industrial wastewater treatment cost and improving the treatment efficiency are achieved.

The invention discloses a profile drilling machine convenient for drill rod switching, and relates to drilling equipment. The drilling machine comprises a worktable; an object placing tank is formed in the worktable; a drilling module is arranged above the object placing tank, and comprises a base driven through a screwing driving module; a cavity is formed in the base; a rotating disc is rotationally mounted in the cavity; the base is provided with a positioning mechanism for limiting rotation of the rotating disc; part of a disc body of the rotating disc extends out of the cavity; and multiple drill rods with different rod diameters are fixed on the peripheral surface of the rotating disc in the peripheral direction at equal intervals. Through arrangement of the drilling module consisting of the base and the rotating disc, and through arrangement of a positioning mechanism, the switching of the drill rods can be realized through poking of the rotating disc without repeated disassembly, so that the switching efficiency is improved.

The invention discloses a self-adaptive ship-intercepting method. The method has the following advantages that: the method overcomes the problem that because buoys and intercepting cables can be pressed into water by ships in the past, the anti-collision intercepting facilities can fail; moreover, because buoys and intercepting nets normally horizontally float on the water surface and the lengthsof the buoys and the intercepting nets do not have affection on the stability of the whole system, the lengths of both the buoys and the intercepting nets are not limited, thereby the intercepting effect is ensured, and moreover, when the intercepting system used in the method normally horizontally floats on the water surface, sight on the sea surface cannot be affected; in addition, the intercepting system used in the method has the advantages of low construction cost, high economical efficiency, long service life and convenient replacement and maintenance; and moreover, the method can be flexibly transported to different places for use, and can change the arrangement position of the intercepting system.

The invention discloses a computer image output device. The device comprises a drawing table, wherein a canvas is arranged at an outlet of the drawing table, a drying mechanism for air-drying ink on the surface of the canvas is arranged at the top of the drawing table, and the drying mechanism comprises an inflation pipe fitting. According to the computer image output device, a cleaning mechanism is adopted to purify air blown out by the drying mechanism, the air firstly enters an inner cover through a bottom hole, and the inner cover is pushed by air pressure to move upwards along with more and more airflow entering the inner cover and the internal pressure exceeding the pulling limit of a pressure storage spring, so connecting holes of the inner cover and an outer cover are in butt joint, and high-pressure air accumulated in the inner cover is instantly ejected through the connecting holes; a fan continuously conveys air, the air flushes into a cleaning solution through the small connecting holes, dust in the air is mixed with the cleaning solution, and the air turns into bubbles which emerge from a water surface and are used by the drying mechanism; and therefore, the blown air has small influence on a drawn pattern, and the bright color of the pattern is ensured.

The invention discloses an oncomelania blocking wall and an oncomelania settling pond for water conservancy and hydropower engineering. The oncomelania blocking wall comprises an oncomelania blockingmechanism; the lower part of the oncomelania blocking mechanism is provided with a flow guiding mechanism, and the oncomelania blocking mechanism comprises a plurality of oncomelania blocking plates;the oncomelania blocking plates are arranged side by side and hinged together to form an oncomelania blocking portion, and a floating body is arranged on the upper portions of the oncomelania blockingplates; two sides of the oncomelania blocking portion sleeve main shafts correspondingly, and the oncomelania blocking portion can freely slide in the axial direction of the main shafts; and the flowguiding mechanism is located below the oncomelania blocking portion, the flow guiding mechanism is formed by connecting a plurality of flow guide plates in series, and the two sides of the flow guiding mechanism are fixedly connected with the lower portions of the main shafts correspondingly. According to the oncomelania blocking wall and the oncomelania settling pond, the water flow can be quickly recovered stably while the interception effect is guaranteed so as to make the oncomelania settle rapidly, so that the effects of interception and settling of the oncomelania are remarkably improved, and the defects existing in the prior art are overcome.

The invention discloses a water injection filtering device for an oil field water injection well. The device comprises a filter disc and a mixing box, wherein the mixing box is fixed below the filterdisc and is communicated with the interior of the filter disc, the filter disc is cylindrical, a disc cover is arranged at the top of the filter disc, a water inlet pipeline is inserted into the disccover, the water inlet pipeline is communicated with the interior of the filter disc, the interior of the filter disc is provided with a double-layer structure comprising an outer ring groove and an inner transfer cavity, the outer ring groove is located outside the inner transfer cavity, and an annular partition wall is arranged between the outer ring groove and the inner transfer cavity. According to the device, the filter disc with the inner-outer double-cavity structure is arranged, and the impurities in water are intercepted through a plurality of filter screen plates in the filter disc,so that the flowing path of water is increased under the condition that the occupied area is not increased so as to ensure the intercepting effect, and when one filter screen plate needs to be disassembled and maintained, normal filtering work can be conducted through the other filter screen plates so as to ensure the continuous water injection work and improve the production efficiency.

The invention discloses a snail blocking wall and a snail settlement tank for water conservancy and hydropower projects, comprising a snail blocking mechanism, the lower part of the snail blocking mechanism is provided with a flow guide mechanism, the snail blocking mechanism includes a plurality of snail blocking plates, and the snail blocking mechanism includes a plurality of snail blocking plates. The screw plates are arranged side by side and hinged together to form a screw blocking part. The upper part of the screw blocking plate is provided with a floating body. The two sides of the screw blocking part are respectively sleeved on the main shaft, and the screw blocking part can slide freely along the axial direction of the main shaft. The flow guide mechanism is located below the screw blocking part, and the flow guide mechanism is formed by a plurality of flow guide plates connected in series, and both sides of the flow guide mechanism are respectively fixedly connected with the lower part of the main shaft. The snail blocking wall and the settlement tank of the present invention, while ensuring the interception effect, can quickly restore the water flow to be stable, and then make the oncomelania sink and settle quickly, and the effect of oncomelania interception and settlement has been significantly improved, solving the problems in the prior art. There are deficiencies.

A method for preparing a high-flux loose hollow fiber nanofiltration membrane, comprising the following steps: 1. dissolving a metallic silver salt in water to prepare a metallic silver salt solution, and then adding ethylenediamine to the metallic silver salt solution, Stir to obtain a uniform aqueous solution; 2. soak the hollow fiber ultrafiltration membrane in the aqueous solution prepared above, take it out after soaking, and remove the residual solution on the surface of the hollow fiber ultrafiltration membrane; 3. soak the hollow fiber ultrafiltration membrane obtained in step 2. Immerse in the prepared oil phase solution, and carry out interfacial polymerization reaction on the surface of the hollow fiber membrane; ④ take out the hollow fiber ultrafiltration membrane obtained in step ③ from the oil phase, dry it, and then soak it in a salt solution to remove it and then clean it with pure water A hollow fiber nanofiltration membrane was obtained. The silver chloride nanoparticles in the present invention can be uniformly distributed in the ultra-thin separation layer by in-situ production, and the holes formed after the nanoparticles are dissolved can greatly improve the flux while ensuring the interception performance of the nanofiltration membrane.

The invention discloses an ecological intercepting technology of a source of pollution of urban and rural polluted water, and technology is used for solving the problem of intercepting exogenous pollution of opened polluted water and ecological repair problem of the polluted water. The technology comprises the following steps: (1) arranging two ecological intercepting walls of the source of pollution at the entrance of the source of pollution of a river along the length direction to form an intercepting area; (2) arranging ecological floating islands on both sides of the river in the intercepting area; (3) putting complex enzymes and compound microorganisms to the intercepting area so as to purify the water; (4) putting aquatic animals to the intercepting area so as to purify the water. The water quality is enhanced, the ecological environment of the water is improved, and meanwhile, the effect of optimizing landscapes is realized.

The invention discloses a method for regenerating and extending the service life of scrapped PVDF membranes by adopting chemical cleaning-structural transformation-hydrophilic repair, which can realize regeneration and prolongation of scrapped PVDF membrane materials (that is, membranes that have reached their service life). The method comprises the following steps: after cleaning the discarded membrane with sodium hypochlorite and citric acid, treating the membrane with a structure transforming agent, while enlarging and hydrophilizing the PVDF membrane, washing out unrecoverable pollutants; subsequently, using dopamine The self-polymerization reaction on the surface of the membrane further improves the hydrophilicity of the membrane surface, improves the anti-pollution performance, and at the same time repairs the damaged points on the surface of the scrapped PVDF membrane during long-term operation. The water flux of the repaired regenerated membrane is not lower than that of the new membrane, the anti-pollution performance is improved, the service life of the membrane is extended, and the harm to the environment caused by the disposal of scrap PVDF membrane is significantly reduced. The operation method of the invention is simple and easy to realize industrial application.

The invention relates to a medium filter for reclaimed water treatment in the field of urban sewage recycling. The medium filter comprises a filtering tank, a water inlet pipe, a water outlet pipe and a filtering medium, the filtering tank is provided with a pore plate upwards from the bottom by a certain distance, one end of the water inlet pipe extends into the filtering tank from the top of the filtering tank, and one end of the water outlet pipe is communicated with a drainage port formed in the bottom of the filtering tank and located below the pore plate; the water inlet pipe is provided with a filter water inlet; the water outlet pipe is provided with a filter water outlet; the filtering medium comprises an anthracite filtering layer, a quartz sand filtering layer and a gravel cushion layer, and the anthracite filtering layer, the quartz sand filtering layer and the gravel cushion layer are sequentially laid on the pore plate from top to bottom. Through the structural design of the tank body and the filtering layer, impurities such as colloids, BOD5 and COD in reclaimed water can be effectively removed, so that the water quality reaches the standards that suspended solids are less than 2mg / L, the turbidity is less than 2NTU and the reverse osmosis SDI is less than 4, and the requirements of water reclaiming devices such as back-end ultrafiltration, reverse osmosis and ion exchangers on the water quality of inlet water are met.

The invention discloses a rapid oxygenation sewage treatment device. The rapid oxygenation sewage treatment device comprises a dissolved oxygen chamber and a filter chamber in parallel. The top of thedissolved oxygen chamber is provided with a water inlet. Through a diagonal sliding groove at the top of the dissolved oxygen chamber, large solid wastes in the sewage are effectively intercepted anddischarged timely so that the interception ability of an inclined groove to solid wastes is guaranteed in a continuous treatment process. Through a drum, small waste particles are blocked and the sewage is broken into water drops so that the dissolved oxygen content in the sewage is greatly increased. Through multiple oxygenation processes based on a mixing nozzle and a water falling plate, the organic matters in the sewage can be completely precipitated. A microfiltration membrane can fully intercept the organic matters so that the organic matter content of the sewage reaches to the discharge standard. The activated carbon adsorption network preferentially intercepts the floc formed by the precipitation of the organic matters before the microfiltration membrane intercepts so that the service life of the microfiltration membrane is greatly prolonged and the treatment cost is reduced.

The invention belongs to the technical field of organic solvent nanofiltration membrane separation, and in particular relates to a regular layered inorganic solvent-resistant nanofiltration composite membrane and a preparation method thereof. The layered inorganic solvent-resistant nanofiltration composite membrane is a composite membrane prepared by vacuum suction filtration. The layered inorganic solvent-resistant nanofiltration composite membrane provided by the invention exhibits higher nanofiltration performance than the solvent-resistant nanofiltration membrane prepared by a traditional method.

The invention discloses a heat-preserving glue spraying cotton and a glue spraying device thereof, and relates to the technical field of glue spraying cotton production; in order to improve the glue spraying effect; the glue spraying device includes a negative pressure table, and a support frame is installed above the negative pressure table Glue spraying mechanism, the glue spraying mechanism includes a moving seat and a glue spraying head, the glue spraying head is equidistantly installed on the outer wall of the bottom of the moving seat, and the outer wall of the top of the moving seat is provided with a rubber delivery tube connected with the glue spraying head, and the rubber delivery tube is another One end is connected with a glue supply device; when the glue spraying cotton is produced, the glue spraying link is produced by the above glue spraying device; the raw materials of the thermal glue spray cotton are 4080 low-melting point polyester fiber, polyester staple fiber and superfine fiber . In the present invention, by setting a negative pressure platform and a negative pressure mechanism, the glue sprayed on the upper surface of the glued cotton by the glue spray head can be attracted downward during the processing of the glued cotton, so that it can be fully diffused inside the glued cotton, thereby improving the The effect of glue spraying guarantees the product quality.

The invention discloses an exhaust gas purification device, which comprises a box body and a conveying structure. A support leg is arranged at the bottom of the box body, the conveying structure is located at the bottom of the box body and communicates with the inside of the box body, and an exhaust pipe is arranged on the upper part of the side surface of the box body. , the conveying structure includes an input connecting pipe, a first one-way valve pipe and a second one-way valve pipe, both of the first one-way valve pipes are connected with expansion pipes, the input connecting pipe and the second one-way valve pipe The valve pipes are located on both sides of the first one-way valve pipe and are sealed with the expansion pipe; the device drives the telescopic rod to reciprocate through the hydraulic cylinder during transportation, and the gas volume in the expansion pipe changes, which can change the gas during the transportation process. The flow speed, when the expansion pipe connected to the interception pipe shrinks, the gas flows rapidly to the interception pipe, which impacts the interception net in the interception pipe, avoids the blockage caused by too many suspended particles on the interception net during long-term transportation, ensures the transportation efficiency, and Ensure the interception effect of the interception tube on suspended particles.

The invention relates to a pore plate grating system which comprises a rack for supporting and two groups of guide grooves for guiding rotation of a pore plate chain, wherein the two groups of guide grooves are oppositely arranged; a main shaft which is rotatably mounted on the rack, wherein the main shaft is provided with a chain wheel; the pore plate chain which comprises a plurality of pore plates and a plurality of rotating shafts, the two ends of each pore plate are rotatably connected to the two adjacent rotating shafts respectively, the pore plates jointly define an annular structure, and the two ends of each rotating shaft are movably restrained in the guide grooves respectively; a plurality of sealing parts are arranged at the two ends of the pore plate chain respectively, each sealing part is provided with a first matching surface, at least one side of each guide groove is provided with a second matching surface, and the first matching surfaces and the second matching surfaces are mutually staggered and matched to form dynamic sealing; according to the pore plate grating system, the sealing parts are arranged so that sewage can flow out of the pore plate chain only through the filtering holes of the pore plate, the capability of intercepting grating slag can be ensured, and the sewage treatment effect can be improved.

The invention discloses a coal-water slurry purification pre-change furnace, which comprises a furnace body, a dirt collection basket and a distribution basket arranged in the furnace body, and upper alumina ceramic balls are laid on the upper side of the pre-change protective agent layer in the furnace body layer, the dirt collection basket is placed on the upper layer of alumina ceramic balls, and there is a gap between it and the inner wall of the furnace body, the distribution basket is located on the lower side of the dirt collection basket, and the lower end of the distribution basket extends into the pre-change protective agent layer , the projection of the dirt collection basket covers the distribution basket; the dirt collection basket has a first gas flow channel, and is filled with at least one of the strip-shaped pre-change protection agent and the second alumina ceramic ball, and the bottom of the dirt collection basket is provided with Outriggers; the distribution basket has a second gas flow channel and is filled with third alumina ceramic balls, and the airflow can enter the distribution basket through the space between the legs of the dirt collection basket. Utilizing the application, the effective scale collection capacity of the pre-conversion furnace is greatly increased, the operation period of the pre-conversion furnace is extended, and the number of times of changing the agent is reduced, thereby effectively reducing the cost of changing the agent and the operation risk of the enterprise.

The invention discloses a coal water slurry purification pre-conversion furnace which comprises a furnace body, a scale collecting basket and a distribution basket, the scale collecting basket and thedistribution basket are arranged in the furnace body, an upper aluminum oxide ceramic ball layer is laid on the upper side of a pre-conversion protective agent layer in the furnace body, the scale collecting basket is placed on the upper aluminum oxide ceramic ball layer, a gap is formed between the scale collecting basket and the inner wall of the furnace body, and the distribution basket is arranged at the lower side of the scale collecting basket. The lower end of the distribution basket extends into the pre-conversion protective agent layer, and the projection of the scale collecting basket covers the distribution basket; the scale collecting basket is provided with a first gas flow channel and is filled with at least one of a strip-shaped pre-conversion protective agent and a secondaluminum oxide ceramic ball, and supporting legs are arranged at the lower part of the scale collecting basket; the distribution basket is provided with a second gas flow channel and is filled with athird aluminum oxide ceramic ball, and gas flow can enter the distribution basket through the space between the supporting legs of the scale collecting basket. By utilizing the pre-conversion furnace,the effective scale collection capacity of the pre-conversion furnace is greatly increased, the operation period of the pre-conversion furnace is prolonged, and the agent replacement frequency is reduced, so that the agent replacement cost and the operation risk of an enterprise are effectively reduced.