52results about How to "Solve deposition" patented technology

The invention discloses a silicon carbide activation annealing method. The method comprises the following steps: forming a first protection layer on the surface, subjected to ion implantation, of oneside of a silicon carbide wafer; forming a second protective layer on the surface of one side, at which the first protective layer is formed, of the silicon carbide wafer; carrying out annealing treatment of the silicon carbide wafer with the second protection layer, wherein the thermal stability of the second protection layer is superior to that of the first protection layer during annealing treatment. A first protection layer and a second protection layer are formed on the surface of silicon carbide. During the annealing treatment of the silicon carbide wafer, the second protection layer canprevent the first protection layer from melting at a high temperature and prevents the sublimation of silicon atoms, and the first protection layer can effectively prevent silicon atoms on the surface of the silicon carbide wafer from sublimating and depositing again, so the problems of sublimation and deposition of silicon atoms on the surface of silicon carbide in the annealing process can be solved through the two protection layers, and the reliability of activating annealing protection of silicon carbide is improved.

The invention discloses a method for solving the problem of biological deposition of a sand-bottom stichopus japonicus aquaculture pond by the aid of biological functions. The method can solve problems that an effect for improving biological deposition of a sand-bottom stichopus japonicus aquaculture pond is poor in the prior art, a sedimentary environment of the stichopus japonicus aquaculture pond cannot be effectively improved, diseases of stichopus japonicus cannot be prevented and the like. The method is characterized in that certain quantities of penaeus japonicus, fenneropenaeus chinensiss, ruditapes philippinarum and sinonovacula constricta are fed into the stichopus japonicus aquaculture pond, an effect of loosening the bottom of the pond is realized owing to sand diving functions of the penaeus japonicus, the fenneropenaeus chinensiss, the ruditapes philippinarum and the sinonovacula constricta, organisms such as nereid and copepoda in the aquaculture pond are ingested by the penaeus japonicus and the fenneropenaeus chinensiss, and residual feeds, organic detritus, humus, fungi and the like are subjected to filter-feeding by the ruditapes philippinarum and the sinonovacula constricta. Accordingly, the method has the advantages that the purpose of improving a sedimentary environment of the aquaculture pond is achieved, and the problem of biological deposition of the aquaculture pond is solved.

The invention relates to the field of textile dyeing and finishing equipment, particularly to a dye vat dye liquor automatically feeding device. The dye vat dye liquor automatically feeding device comprises a dye vat module, a frame base, a liquor storage module, a dye liquor tube module, a liquor feeding driving module, a transmission wheel module and a dye liquor stirring module, wherein the dyevat module is fixedly connected on the left of the top end of the frame base; the liquor storage module is fixedly connected on the right of the top end of the frame base; one end of the dye liquor tube module is connected and communicated with the liquor storage module, and the other end of the dye liquor tube module is connected and communicated with the dye vat module; the lower end of the right of the dye vat module is connected and communicated with the liquor feeding driving module; the upper end of the liquor feeding driving module is connected with the front end of the transmission wheel module. According to the dye vat dye liquor automatically feeding device, dye liquor to be fed is placed inside the liquor storage module and then automatically fed inside a dye vat through the liquor feeding driving module, the transmission wheel module and the dye liquor tube module.

The invention discloses an SCR urea mixer for a diesel internal combustion engine aftertreatment system. The SCR urea mixer comprises a cylindrical shell and a urea nozzle, wherein a vortex mixing cavity is formed in the front end in the shell; an exhaust mixing cavity is formed in the rear end in the shell; the urea nozzle is arranged on the wall of the vortex mixing cavity; the vortex mixing cavity is arranged on the inner circumference of the cylindrical shell and is the gas flow mixing cavity with a spiral structure with convergent flow characteristics; air inlets are formed in the front end face and along the axial direction of the shell and the peripheral edge of the spiral structure; exhaust ports are formed in a connecting part connecting the vortex mixing cavity and the exhaust mixing cavity and along the peripheral direction of the central edge of the spiral structure; a circular hole is formed in the center of the rear end face of the exhaust mixing cavity; and a plurality of flow equalizing plate exhaust holes are uniformly formed in the radial periphery of the circular hole. According to the SCR urea mixer, urea liquid drops are transferred, crushed and atomized by utilizing exhaust hot tail gas flow, and is fully and uniformly mixed with the hot tail gas, so that the problems of urea deposition and crystallization are solved, and the gas flow uniformity and the ammonia gas uniformity of the mixer well meet the requirements of emission regulations.

The invention relates to a preparation method of a long-acting inner wall cleaning agent for a crude oil storage tank, and belongs to the technical field of chemical engineering cleaning agents. The method comprises the steps that a sulfuric acid solution, a polyethylene oxide-polypropylene oxide segmented copolymer, urotropine, o-xylene thiourea, sodium molybdate, triisopropanolamine, isobornyl methacrylate, benzoic acid and olive oil macrogol ester are heated and then mixed to be uniform, and a first mixture is obtained; a corrosion inhibitor and a thickening agent are added in the first mixture, heated and mixed to be uniform, and a second mixture is obtained; an anion surface active agent and paraffin emulsion are added into the second mixture, heated and then mixed under the high-speed dispersion condition, and a cleaning agent is obtained. According to the cleaning agent, the problem that iron sulfide surface depositions and corrosion are generated by a sulfur compound in the crude oil storage tank can be solved, and the cleaning agent has the effect of resisting rust in a long-acting mode.

The invention discloses an anti-jammed and anti-blocking wearproof ball valve which comprises a valve body, a valve element, a valve seat and a valve rod, wherein the valve body comprises a valve main body and a valve body side cover; the valve main body and the valve body side cover can be detached and assembled in a left-right manner; a medium inlet cavity (A), a valve cavity (B) and a medium outlet cavity (C) communicated with each other are arranged in the valve body; the medium inlet cavity (A) is arranged in the valve body side cover; the valve element is of U-shaped non-integral spherical structure composed of an integral valve ball with part of the side wall cut off; a side ball panel is in seal fit with the valve seat when the valve element is in a closed state; the central axis of the valve rod is eccentrically arranged relative to the spherical center of the side ball panel of the valve element, so that the maximum medium circulating clearance exists between the side ball panel and the valve seat when the valve element is in the full open state. The anti-jammed and anti-blocking wearproof ball valve has the advantage that the problems that the middle cavity of the valve is deposited and blocked and the switch of the valve is blocked can be solved during application of a solid particle medium, a solid-containing liquid medium, a solid-containing gas medium and a multiphase complex medium.

The invention discloses a cyclone separator capable of preventing particles from being deposited on the outer wall of an exhaust pipe. The problem that the outer wall of an exhaust pipe of the high-temperature cyclone separator is seriously coked is solved, and the cyclone separator is characterized in that a cylinder cavity which is coaxial with the exhaust pipe is arranged above a top plate of the cyclone separator, an air inlet is formed in the side wall of the cavity, and an annular gap is formed between the top plate and the exhaust pipe. According to the cyclone separator, a high-speed rotary air cushion layer formed on the outer wall of the exhaust pipe by using an air flow through the cyclone separator can not only prevent fine particles from adhering and depositing on the outer wall of the exhaust pipe, but also can carry out secondary separation on the fine particles near the outer wall of the exhaust pipe, and the separation efficiency of the small particles can be improvedwhile the coking of the outer wall of the exhaust pipe is overcome.

The invention relates to a soluble-substance dissolving device. The soluble-substance dissolving device comprises a solution circulation tank, a soluble-substance adding trough, a dissolving trough and a solution circulation pump. The solution circulation tank is connected with a feeding pipe of a liquid material and an external delivering pipe of a solution through a first pipe section and a seventh pipe section, and a solution external-delivering pump is arranged on the seventh pipe section; the soluble-substance adding trough is connected with the solution circulation tank through a second pipe section, and a plurality of adding openings are formed in the soluble-substance adding trough; the dissolving trough is communicated with the soluble-substance adding trough; the solution circulation pump is connected with the dissolving trough and the solution circulation tank through a fourth pipe section and a fifth pipe section. The invention also discloses a soluble-substance dissolving method with the soluble-substance dissolving device. By means of the soluble-substance dissolving device and the soluble-substance dissolving method, the problems such as sedimentation, agglomeration and heat releasing which are generated in the process that soluble substances are added into liquid are solved, the working efficiency is improved, the dissolving speed is increased, device plugging and pipe plugging are avoided, it is guaranteed that soluble-substance adding is convenient and efficient, and the labor strength is reduced.

The invention provides a cyclone type supercritical water oxidation reactor. The cyclone type supercritical water oxidation reactor comprises a reactor barrel, an electric heating module wrapping theperiphery of the reactor barrel and a sealing cover connected with the reactor barrel, wherein the reactor barrel comprises a cylindrical barrel, a conical barrel connected with the cylindrical barreland arranged below the cylindrical barrel, a water inlet pipe arranged on the inner wall of the cylindrical barrel and a salt discharge pipe arranged at the bottom of the conical barrel, and the extension direction of the water inlet pipe is the horizontal direction and is tangent to the inner wall of the cylindrical barrel. According to the cyclone type supercritical water oxidation reactor disclosed by the invention, organic waste liquid, water and an oxidizing agent do cyclone motion in a supercritical region of the reactor, so precipitated inorganic salt is effectively prevented from being deposited on the inner surface of the supercritical region; inorganic salt particles generated in the reaction process fall into a subcritical region under the action of gravity, are dissolved againand are then discharged from the bottom, so long-term stable operation of the reactor is guaranteed; and the reactor is compact in structure and small in occupied area.

The invention provides an application of a mixture of a carbon material and an ionic bromide in a battery positive electrode active material of an aqueous electrolyte. The invention also provides an aqueous zinc-bromine double-ion battery which comprises a positive electrode active material, a negative electrode active material and an electrolyte, wherein the positive electrode active material comprises a mixture of a carbon material and an ionic bromide. The electrolyte comprises a saturated ZnCl2 aqueous solution. The battery provided by the invention has relatively long cycle life and operation stability. The deposition and dissolution processes of the metal Zn negative electrode active material in the saturated ZnCl2 hydrate adopted by the invention are very efficient and reversible, and dendritic crystal growth risks are avoided, and therefore the negative electrode side has good operation stability. The battery disclosed by the invention is high in safety and environment-friendly. The battery disclosed by the invention is low in cost and relatively high in energy density.

The invention provides a method for preparing conductive fiber paper with a lithium-philic and lithium-phobic gradient structure and the conductive fiber paper. The preparation method of the conductive fiber paper comprises the following steps: forming a lithium-philic coating layer on the surface of a carbon nanotube by adopting an atomic layer deposition method, and then carrying out gradient papermaking to form a film according to different proportions of lithium-philic / lithium-phobic materials by adopting a wet papermaking process. The invention further provides a preparation method of the composite metal lithium negative electrode, wherein solid lithium is heated to a molten state, and then the lithium in the high-temperature molten state is injected into a lithium-philic layer. The invention also provides a LiF protective layer formed on the surface of a composite metal lithium negative electrode through atomic layer deposition treatment or HF fluorination treatment. According to the invention, the lithium affinity of the formed conductive fiber paper is gradually weakened from the bottom layer to the top layer, and the top layer is completely lithium-phobic, so that the metal lithium can be uniformly deposited from the bottom layer to the top layer, the problem of deposition of the metal lithium on the top layer is solved, and the cycle stability and the cycle life of a lithium metal negative electrode are remarkably improved.

The invention relates to the field of traditional Chinese medicines, and particularly relates to a traditional Chinese medicine preparation for treating hyperuricemia and a preparation method thereof. The preparation is prepared from the following components in parts by weight: 5-15 parts of ash bark, 25-75 parts of plantain, 15-45 parts of semen plantaginis, 15-45 parts of lysimachia christinae hance, 15-45 parts of lygodium japonicum and 5-15 parts of cortex mori radicis. The preparation method comprises the following steps: weighing, and mixing the raw materials; extracting with an ethanol solution for multiple times; filtering the extract; and concentrating and drying the filtrate. The preparation can be used for effectively reducing the value of blood uric acid and uric acid deposition.

The invention discloses a density measurement system for slurry in a wet flue gas desulfurization absorption tower of a thermal power plant. The density measurement system comprises a controller and at least one group of measurement mechanisms, wherein each measurement mechanism comprises two pressure transmitters and two sampling tubes; each two pressure transmitters are arranged outside the desulfurization absorption tower at intervals along the vertical direction, and an included angle between a tube connecting hole of each pressure transmitter and the desulfurization absorption tower is 30-35 degrees; one end of each sampling tube is connected into the desulfurization absorption tower, and the other end of each sampling tube is connected with the tube connecting hole of the corresponding pressure transmitter; a manual valve is arranged on each sampling tube. According to the density measurement system, by virtue of a differential pressure type measurement manner, the problem that a pipeline is worn during the measurement of a mass flow meter is solved, the maintenance cost is greatly saved, and the real-time density of slurry in the desulfurization absorption tower can be further accurately and stably displayed; furthermore, the included angle between the tube connecting hole of each pressure transmitter and the desulfurization absorption tower is 30-35 degrees, so that the problem of slurry deposition is solved, and the corrosive damage caused by slurry to the pressure transmitters is avoided.

The invention relates to a method for modifying organic polymer material and a modified organic polymer material. The method for modifying organic polymer material comprises the following steps: (1) placing the organic polymer material in an atomic layer deposition reaction chamber; (2) introducing a carrier gas into a precursor 1, sealing an atomic layer deposition reaction chamber for 180-600 seconds for the first time, and introducing an inert gas for purging and cleaning; and (3) introducing into a precursor 2 again, and sealing the atomic layer deposition reaction chamber for 180-600 seconds for the second time; wherein the precursor 2 is selected from ammonia plasma or mixed plasma of nitrogen and hydrogen. According to the invention, an ALD technology is utilized, a nitrogen-containing precursor is taken as a main raw material, a nitride is filled into the organic polymer material at proper filling depth and filling density, a film is formed on the surface of the organic polymer material, and the modified organic polymer material with better chemical and mechanical properties is obtained.

The invention discloses a reversed polarity plasma spraying gun for ultralow-pressure plasma spraying. The reversed polarity plasma spraying gun comprises a gun body part and an external spraying pipe part. The gun body part adopts a reversed polarity electrode structure design of a front central through hole cathode and a rear cup-shaped anode, so that the spray gun can realize higher power under the condition of lower current, and the ablation of the electrode and the pollution of the coating are reduced; a graphite spray pipe with a straight-barrel-shaped through hole is adopted as an external spray pipe part, the jet flow temperature under low pressure is increased through compression jet flow, the retention time of powder in a high-temperature jet flow area is greatly prolonged, and the powder can be fully melted and gasified under the conditions of a low-pressure environment and small spray gun power; and the graphite spray pipe is quantitatively cooled by adopting gas cooling, so that the inner wall of the spray pipe is at a higher temperature, and the problem that powder deposits and blocks the inner wall of the pipe wall is effectively solved in combination with larger plasma gas flow.

The invention provides a distillation and condensation device for strong acid and strong alkali. The distillation and condensation device provided by the invention has high distillation efficiency andgood distillation effect. The distillation and condensation device provided by the invention comprises a distillation reactor, a condensation cylinder and a cooling tube. According to the invention,stirring blades are utilized to stir a feed liquid, so the problems of deposition and incomplete distillation of the feed liquid are solved, and the utilization rate of the feed liquid is improved; distribution of the feed liquid is completed through diversion grooves and evaporation members, and the feed liquid can be guaranteed to be flatly spread on the inner wall of a second shell, the outer wall of a third shell and the inner wall of a fourth shell so as to form thin films on the inner walls, so the speed of evaporation is improved; the feed liquid is introduced into a main guiding grooveand an auxiliary guiding groove respectively through a guiding sheet and a baffle plate, and flows downward along the main guiding groove and the auxiliary guiding groove to form thin films on the inner wall of the second shell and the outer wall of the third shell, so the feed liquid is guaranteed to be completely heated; and bulges are utilized to reduce the flow rate of the feed liquid and increase the time of contact between the feed liquid and the inner wall of the second shell, so the efficiency of distillation is improved.

The invention relates to a high-pressure steam sterilizer cleaning fluid for a laboratory. The high-pressure steam sterilizer cleaning fluid comprises a component A, a component B and a component C, wherein the component A is prepared from the following raw materials: 1-3% of sodium carbonate, 1-2% of citric acid, 1-2% of lactic acid, 0.3-0.8% of a surfactant and 92-97% of water; the component B is prepared from the following raw materials: 50-65% of diesel oil, 18-22% of fatty acid, 8-12% of soft soap, 4-5.5% of rosin, 3.5-6% of sodium hydroxide and 0.3-0.8% of a surfactant; and the component C is prepared from the following raw materials: 45-55% of water, 18-22% of sodium dodecyl benzene sulfonate, 12-18% of petroleum ether, 4-6% of an OP-10 emulsifier, 4-6% of phosphoric acid and 4-6.5% of zinc nitrate. The problem that scales and erosion of a high-pressure steam sterilizer after use are difficult to clean is solved.

The invention relates to a lime slaking tank capable of removing tank bottom deposits without shutdown and a working method thereof. The lime slaking tank comprises a slaking tank body and a stirrer; the lower part of the slaking tank body is provided with a ring pipe, the ring pipe is provided with a plurality of nozzles, the plurality of nozzles spray in a tangential direction, liquid sprayed by the plurality of nozzles forms a rotational flow at the bottom of the slaking tank, the annular pipe is connected with a circulating slurry pump which is connected with the upper part of the digestion tank body through a pipeline. The invention has the following beneficial effects: 1) the problem of deposition of impurities at the tank bottom is effectively solved through the tank bottom rotational flow formed by the circulating slurry pump and the nozzle; 2) the problem that impurities are deposited on the periphery of the tank bottom is effectively solved by the conical tank bottom; 3) the backwashing device fully solves the problem of blockage of the emptying pipe caused by impurities.

The intelligent in-situ implanted artificial bladder consists of urine conveying and storing system and automatic intelligent system, the former includes artificial ureter, artificial bladder body and artificial urethra; and the latter incldues pressure sensing alarm, automatic flow returning mechanisms, urine pump and controller. The present invention is used mainly for patient needling bladder reconstruction and urethra reformation owing to bladder tumor, necrotic and interstitial cystitis, traumatic bladder damage, etc. After the body's bladder is ablated, the artificial bladder is in-situ implanted into the pelvic cavityk, the artificial ureter is anastomosed with the ureter stump, the artificial urethra is anastomosed with the urethra strump, and the urine conveying and storing system is reconstructed. The present invention makes it possible for the patient to control urination time autonomously.

The invention relates to the field of plasma technology and chemical synthesis, in particular to a direct-current plasma device cathode applied to plasma high-temperature synthesis and a protecting method thereof. The problems of low energy utilization rate and serious ablation of the traditional plasma cathode are solved. The plasma cathode is a composite cathode of a hollow cathode and a water cooling cathode, wherein one end of the composite cathode is the hollow cathode with a hollow structure while the other end is the water cooling cathode with a water cooling structure; gas passages communicated with each other are arranged on the hollow cathode and the water cooling cathode; one end of each gas passage is communicated with a gas inlet while the other end is communicated with the inner cavity of the hollow cathode; and mixed protective gas consisting of hydrogen and hydrocarbon is introduced into the hollow cathode from the gas passages. The technical scheme provided by the invention can greatly prolong the service life of the plasma cathode and improve the energy utilization rate of the cathode and has the characteristics of high working stability and wide application range.

The invention belongs to the technical field of shape control of porous materials, and discloses a TEMPO-pretreated nanocellulose-cuprous oxide / silver micro-nano structure composite material and a preparation method and application thereof. The method comprises the following steps: mixing wood pulp, TEMPO, sodium bromide and an aqueous sodium hypochlorite solution, adjusting a pH value, then conducting centrifugation and dialysis, mixing an obtained TEMPO-pretreated nanocellulose suspension with a Benedict's reagent, conducting heating in a water bath at 70-95 DEG C, stirring a centrifugal precipitate to obtain a mixture solution, dropwise adding a silver nitrate solution, and performing centrifugal treatment to obtain the TEMPO-pretreated nanocellulose-cuprous oxide / silver micro-nano structure composite material. The composite material has the advantages of low synthesis energy consumption, good stability and uniform size. A surface-enhanced Raman scattering film substrate prepared from the composite material has the advantages of strong adsorption capacity to organic molecules, good dispersibility and good Raman enhancement effect, and is applied to Raman detection of ultralow-concentration molecules, macromolecules and micromolecules.

The invention relates to a turning-back desulfurization tower with a tray on one side. The bottom of the desulfurization tower is an oxidation crystallization slurry tank, the upper part of the desulfurization tower is a desulfurization area, and a turning-back section is arranged between the oxidation crystallization slurry tank and the desulfurization area; a vertical flue gas partition plate isarranged in the middle of the desulfurization area, and divides the desulfurization area into a down-flow-side desulfurization area and a reverse-flow-side desulfurization area which are separated left and right; a desulfurization tower inlet is formed in the upper part of the down-flow-side desulfurization area, and a down-flow-side spraying layer is vertically arranged in the down-flow-side desulfurization area; a desulfurization tower outlet is formed in the upper part of the reverse-flow-side desulfurization area, and a reverse-flow-side spraying layer is vertically arranged in the reverse-flow-side desulfurization area; the tray is vertically arranged below the reverse-flow-side spraying layer; and through holes are formed in the tray. According to the invention, two-section sprayingin the turning-back tower is used for washing and absorbing, so that high desulfurization efficiency and high dust removal efficiency are achieved. Meanwhile, the tray with the through holes is arranged at the lower part of the reverse-flow-side desulfurization area, and a very good uniform distribution effect of flue gas passing through the tray is achieved, so that the problem that the flue gasin the tower is not uniformly distributed is solved, and desulfurization efficiency of the absorption tower is improved.

The invention relates to a vertical flow type coagulating sedimentation and air floatation tank. The vertical flow type coagulating sedimentation and air floatation tank comprises a barrel as well as a coagulation basin and a flocculation basin which are located on the outer side part of the barrel, wherein an overflow port in the upper part of the coagulation basin is communicated with the flocculation basin; the barrel is characterized in that an annular overflow weir is arranged along the upper part of the inner side of the barrel wall, a water inlet formed in the upper part of a central barrel is connected and communicated with an outlet of the flocculation basin through a water inlet pipe, an air dissolving port in the lower part is connected and communicated with an air dissolving water pipe, upper and lower end surfaces of the central barrel are open, a stirring motor mounted at the top of the barrel is connected with a stirring shaft supported on the barrel, a residue scratch board is arranged at the upper part of the stirring shaft, a sludge scraping board is arranged at the bottom of the stirring shaft, a sludge collecting trough is arranged at the lower part of the residue scratch board, a sludge discharge pipe at the bottom of the sludge collecting trough extends out of the barrel, a clear liquid outlet in the upper part of the barrel is connected and communicated with a water outlet pipe, and the water outlet pipe is further connected and communicated with the air dissolving water pipe which is connected and communicated with an air dissolving pump. The vertical flow type coagulating sedimentation and air floatation tank is compact in structure, low in energy consumption and good in sludge and water separation effect, occupies small area and can solve the problems of bubbled sludge in effluent and sludge deposition at the bottom.

The invention discloses a gas distribution device for a slurry bed reactor and the slurry bed reactor. The gas distribution device includes: an air inlet pipe, the air inlet pipe has an air inlet and an air outlet; a uniform distribution piece, the uniform distribution piece is arranged on the air intake pipe, and a gas passage is arranged in the uniform distribution piece, the gas passage communicates with the air outlet, and the gas passage The bottom wall is provided with a plurality of uniform air holes, and the plurality of uniform air holes are distributed around the circumference of the inlet pipe at intervals; the spoiler, the spoiler includes a plurality of air injection pipes located in the kettle body, and each air injection pipe has an air injection pipe with an opening facing downward. Mouth, each air injection port is positioned at the below of the uniform air hole, and each air injection pipe communicates with the part outside the kettle body of the air inlet pipe through the connecting pipeline extending out of the still body. According to the gas distribution device of the present invention, the uniform distribution of the gas in the still body can be realized under relatively low pressure drop, and the problem of the deposition of solid particles in the still body can be effectively solved.

The invention discloses a self-energy-supply double-rod electrorheologic damper capable of achieving symmetric self-energy supply free of a compensated air chamber. The damper is mainly composed of adamper part and two sets of energy supply parts which are symmetrically arranged. When a piston rod is vibrated by the outside, a compressed spring plate follows the piston rod to move, two sets of piezoelectric ceramics are squeezed respectively in the two strokes of compression and restoration to produce induced voltage which is connected to an inner electrode and outer electrode through a wireto produce an electric field, the viscosity of electrorheological fluids between the inner electrode and the outer electrode is increased, differential pressure is formed between damping cavities, andtherefore, vibration of a piston is reduced. The larger the vibration amplitude of the piston, the higher the voltage generated by the piezoelectric ceramics, and the greater the resistance producedby the electrorheological fluids. In this way, the purpose that the system conducts self-coupling vibration attenuation is achieved. The damper adopts the symmetric structure and the symmetric workingmode of double rods, loads can be borne from the two sides, and vibration attenuation is achieved; the air chamber compensation part is omitted, the reliability and working stability of the damper are improved, unnecessary devices are reduced, and rigid mechanical sealing and inflation processes are omitted.

A sulfur dispersion stabilizer to prevent sulfur blocking of a sulfur-evolving wellhead is a solution prepared with lower alcohol and polyacrylamide macromolecule polymer as a component and water as asolvent in a certain ratio. Existing conventional sulfur deblocking methods include injection of sulfur melting agents, heating and other washing modes; the sulfur melting agents are mostly high in price, toxic and harmful and have stinking smell. The sulfur dispersion stabilizer herein is a nontoxic, odorless, secondary-pollution-free green environment-friendly agent; by adding the sulfur dispersion stabilizer into a sulfur-bearing natural gas well blocking point, surface tension of sulfur particles can be effectively reduced, sulfur aggregation and adhesion can be prevented, the sulfur particle adhesion and precipitation problems can be solved, and pipeline and equipment washing periods can be greatly shortened.

The invention relates to an anti-blocking and scouring-resistant stop valve which comprises a valve and a bonnet. A valve seat assembly is arranged on the valve and is provided with a valve ball, a valve stem and a lower shaft are respectively arranged on the upper side and the lower side of the valve ball, the valve ball is coaxially and centrally constrained by the lower shaft and the valve stem and can carry out rotation action along the coaxial central lines of the lower shaft and the valve stem, the valve seat assembly fittingly clings to the valve ball, the valve, the bonnet, the valve ball and the valve seat assembly are provided with coaxial straight circular flow channels, the bonnet is provided with a medium inlet end, the valve is provided with a flow channel outlet end, and the size of the inlet end of the bonnet is consistent with the inner diameter of a connecting pipeline and is inwardly reduced until the size of the inlet end of the bonnet is identical to the inner diameter of the valve seat assembly and the inner diameter of the valve ball, so that a flared inlet flow channel of the inlet end of the bonnet can be formed. The anti-blocking and scouring-resistant stop valve has the advantages that actual problems of material sedimentation and incapability of resisting scouring can be thoroughly solved by the aid of the anti-blocking and scouring-resistant stop valve, and the production running and operational safety can be guaranteed.

The invention discloses a boiler structure for artificial board production. The boiler structure comprises a boiler main body and a flue gas pipeline leading to each application direction, wherein the application directions at least comprise a drying direction, and the flue gas pipeline is provided with an ash discharge port, so that the space of the flue gas pipeline is enlarged at the ash discharge port, and ash is deposited and discharged at the ash discharge port. According to the boiler structure, the problems that existing boiler equipment is not adaptive to the fuel composition change, raw materials such as barks are prone to enter a flue gas pipeline along with flue gas and deposit in the flue gas pipeline in the combustion process, the cleaning difficulty is increased, the flue gas pipeline is even blocked, and the production is influenced is solved, an ash discharge port is particularly arranged on the flue gas pipeline leading to each application direction of the boiler main body, an area with an enlarged area or volume is constructed at the ash discharge port, and then a flow rate of flue gas at the area is reduced, so that ash settles at the area and is discharged by the ash discharge port, ash deposition is reduced, and a flue is prevented from being blocked.