60results about How to "Reduce plugging" patented technology

A method for removing contaminants from an process stream that includes the use of reticulated material to filter the process stream. The reticulated material also facilitate process stream flow distribution in process units. The reticulated material can be packed with a void space between a substantial number of the reticulated material that can be varied to enhance filtration and flow distribution. The method of filtering also provides a method of removing contaminants leaving process equipment. The methods can be used on a variety of process streams and process equipment. The reticulated material can include ceramics, metallic materials, and chemical vapor deposition elements. The reticulated material can be of various shapes and sizes, and can also be catalytically active.

The invention discloses high-strength silicon carbide foam ceramic and a one-time pulp hanging carburizing sintering preparation method thereof, and belongs to the technical field of silicon carbide foam ceramic preparation. The method comprises the steps that foamed plastic serves as a template, a one-time pulp hanging carburizing sintering method is adopted, high-char polymer resin, silicon powder, sintering aids and ethyl alcohol are mixed to be prepared into pulp with certain viscosity, the foamed plastic is immersed in the pulp and then taken out, then surplus pulp is removed through a centrifugal method, drying is conducted in the shade, and then pulp hanging is repeated until the needed volume fraction is reached; a foam precursor obtained after pulp hanging is put into a tubular furnace to be subjected to pyrolysis carbonization in a nitrogen or argon atmosphere, a foam ceramic carbon precursor framework formed by pyrolytic carbon, the silicon powder and the sintering aids is obtained, the foam ceramic carbon precursor framework is put in an atmosphere furnace to be sintered, and the high-strength SiC foam ceramic is obtained. Compared with a traditional template method, the method is simple in technology, mild in reaction condition, low in equipment requirement and capable of achieving large-scale production easily.

The invention discloses a method for strengthening regional gas extraction through hydro-thermal coupling fracturing. The method comprises steps as follows: firstly, a main fracturing hole, branch fracturing holes and lead holes are sequentially formed in a coal seam roadway through construction, the main fracturing hole is formed in the central position of an equilateral triangle, the opening positions of the branch fracturing holes are distributed at three vertexes of the equilateral triangle separately, the borehole bottom locations of the branch fracturing holes are converged in a center line of the equilateral triangle, the lead holes are located in a circle with the main fracturing hole serving as a center of the circle, and the radius of the circle is 5-15 m; fracturing equipment comprises water injection equipment and a powder injection device, and the water injection comprises an intelligent water tank and a fracturing pump. Quicklime powder in the powder injection device is injected into the main fracturing hole and the branch fracturing holes through underground air pressure; the water injection equipment performs hydraulic fracturing on the main fracturing hole, the quicklime powder is carried by high-pressure water to enter cracks, meanwhile, the quicklime powder and water have a thermal reaction to generate a large amount of heat, and hydro-thermal coupling fracturing is realized; with the implementation of the method for strengthening the regional gas extraction through the hydro-thermal coupling fracturing, the regions influenced by fracturing are increased, the concentration of extracted gas is increased, the effect is remarkable, and demands of work such as regional gas treatment in a coal mine site and the like are met.

The invention discloses a preparation method of a selective water plugging agent and belongs to the technical field of high molecular materials. The preparation method comprises the following steps: mixing a pre-treated mixed solution and a silane coupling agent according to the mass ratio ranging from (80 to 1) to (100 to 1); adding modified graphene oxide which is 0.03 to 0.09 time of the mass of the pre-treated mixed solution, epoxidized soybean oil which is 0.01 to 0.02 time of the mass of the pre-treated mixed solution and a catalyst which is 0.008 to 0.009 time of the mass of the pre-treated mixed solution; after stirring and mixing, adding an initiator which is 0.01 to 0.03 time of the mass of the pre-treated mixed solution; after stirring and reacting, obtaining a blank mixture; filtering the blank mixture; and washing, drying and crushing to obtain the selective water plugging agent. The selective water plugging agent disclosed by the invention has excellent selective permeability and water plugging performance.

The invention discloses a drilling, cutting, discharging and diversion integrated coal seam physical and chemical combination permeability increase system and method, and belongs to soft coal seam pressure relief permeability increase systems and methods. The system comprises a chemical supply jet flow generation device, a drilling, cutting and discharging integrated device and a water, coal and gas separation device. In the chemical supply jet flow generation device, high-pressure water and chemical reagents are fed into a jet flow mixer to be fully mixed through a high-pressure water pump and a chemical adding pump, so that chemical supply jet flow is formed. The drilling, cutting and discharging integrated device can achieve the integration of drilling, slitting and in-hole slag discharging, and the frequency of the phenomenon that holes are blocked in the slitting process is reduced. The water, coal and gas separation device can completely separate the water, coal slag and gas mixture ejected out in the slitting process, separated gas enters an extraction pipeline, and water enters a water tank after being filtered to be recycled. According to the system, ground stress and gas pressure are relieved through slitting, and physical permeability increase is achieved; under the combined action of physical and chemical permeability increase, the air permeability of a coal seam and the gas extraction effect are remarkably improved.

The invention relates to a process for removing sulfur particles from an aqueous catalyst solution used to remove hydrogen sulfide from a gas stream (1, 5), comprising the steps of directing a flow of a suspension (12) comprising reduced catalyst solution and sulfur particles to an oxidizer zone (20), where the catalyst solution is regenerated by contacting said suspension with a gas (22) containing oxygen; and removing sulfur from said suspension at least by gravity sedimentation at a bottom (21) of said oxidizer zone (20). According to the invention a flow deflecting means (34) is disposed at least at an outlet (35) for the oxidized catalyst solution leaving said oxidizer zone (20) such as to prevent any turbulent state caused at least by a stream of oxidized catalyst solution leaving said oxidizer zone (20) such as to reduce foaming and plugging of the whole system. A gas (27) is additionally injected at the conical bottom (21) of the oxidizer zone (20) in parallel to said slanted surface (23) for avoiding sedimentation and agglomeration of sulfur particles on said bottom (21). Heavy hydrocarbons are eliminated to further reduce foam production. Further, foaming and plugging is controlled by using proper packings in the absorber. Proper controls are used to avoid flooding. The temperature is adjusted such that not only the reaction rate in the oxidizer is high, but also the catalyst degradation is kept low. Thus excessive foaming and flooding of the oxidizer zone is avoided.

The invention discloses a method for coal uncovering in a cross cut by hydrothermal coupling based coal fracturing. The method includes: sequentially constructing a main fracturing hole, branched fracturing holes and guide holes in a rock stratum roadway section, wherein the main fracturing hole is formed in the center of an equilateral triangle, hole starting positions of the branched fracturing holes are arranged at three vertexes of the equilateral triangle while hole finishing positions of the same meet at a central line of the equilateral triangle, the guide holes are positioned on a circle taking the main fracturing hole as a circle center and with radius of 5-15m, and herein fracturing equipment comprises water injection equipment composed of an intelligent water tank and a fracturing pump and a powder injector; injecting quicklime powder in the powder injector into the main fracturing hole and the branched fracturing holes through underground air pressure; hydraulically fracturing the main fracturing hole through the water injection equipment, wherein the quicklime powder carried by high-pressure water enters fractures and thermally reacts with water to generate a lot of heat to realize coal uncovering in the cross cut through hydrothermal coupling based coal fracturing. By the method, ground stress and gas pressure of pre-uncovering coal seams are lowered, safety effect is remarkable, and cost is low.

The invention discLoses a downward bedding Layer driLLing hydrauLic sLitting process method, and beLongs to the fieLd of coaL mine gas drainage. The method incLudes the steps of driLLing down the bedding Layer of a soft coaL Layer, using a system pressure wind and a spiraL driLL pipe for construction, stopping driLLing, cLosing the pressure wind, introducing the medium and high pressure water to perform the sLitting, and repeating after compLetion; for the downward bedding driLLing of a medium hard coaL Layer, using Low pressure water and the spiraL driLL pipe for construction, stopping driLLing, switching to the high pressure water for the sLitting operation, and repeating hydrauLic driLLing and sLitting work; adopting a forward driLLing and sLitting method in the soft and medium hard coaL Layer to form a Large area coaL body around the bedding driLLing for pressure reLief and permeabiLity enhancement. The method is suitabLe for pressure reLief and permeabiLity enhancement of the hydrauLic sLitting of the downward bedding driLLing of the high gas outburst coaL Layer in a coaL mine underground coaL road strip and a backstoping area, increases the exposed area of a coaL body, the effective infLuence range of the driLLing and the gas drainage rate, and reduces the number of hoLes driLLed. The method has the advantages of simpLe method, convenient operation, remarkabLe effect andwide popuLarization and appLication vaLue.

The invention provides a double-layer coupling beam hole opening formwork system and a construction method of the double-layer coupling beam hole opening formwork system applied to a double-layer coupling beam. The double-layer coupling beam hole opening formwork system comprises a hole opening formwork and a formwork support; the hole opening formwork comprises a frame body and a frame body back edge; the frame body is arranged in a double-layer coupling beam hole opening and is matched with the double-layer coupling beam hole opening in size; the frame body at least comprises an upper side plate, a lower side plate, a left side plate and a right side plate; and the hole opening formwork further comprises at least one lower ash vibrating drum which connects the upper side plate with the lower side plate in a vertical through mode and is arranged in the frame body. The construction method comprises the steps of reinforcing steel bar bundling, hole opening formwork mounting, concrete pouring, drum column removing, curing and the like. The double-layer coupling beam hole opening formwork system and the construction method of the double-layer coupling beam hole opening formwork system applied to the double-layer coupling beam greatly reduce the quality defects of concrete, avoid forming of air holes in beam side forms, reduce construction procedures of hole forming and plugging, and shorten construction periods; and meanwhile according to the construction method, the flatness of the reinforcing steel bar protective layer of a concrete component around the hole opening and the flatness of a structure concrete face are controlled, and the poured concrete is good in appearance and quality.

The positive pressure concentrated phase constant pressure conveying system includes upper bin bump with material level gauge, pressure transducer, pneumatic ball valve, feeding valve and pneumatic butterfly valve; air feeding system comprising pneumatic control valve connected to the bin pump, orifice plate and the first non-return valve; and conveying system comprising flow regulating valve connected to the pneumatic ball valve and the second non-return valve. After the bin pump is full, air from the air compressor will be supplied to the bin pump to fluidize the material, and the orifice plate controls the air flow for constant flow rate. After the bin pump reaches set pressure, air from the air compressor forms secondary blast entering the conveying pipeline via the pneumatic ball valve. The system has one set constant conveying pressure, which is maintained via the automatic regulation of the opening of the automatic regulating valve.

A process for deactivating an active catalyst species in an olefin polymer stream exiting a polymerization reactor and neutralizing catalyst residues, as well as reducing corrosion, plugging or fouling of olefin production and recovery equipment and imparting antioxidative properties to an olefin polymer comprising adding a catalyst deactivator and an alkaline earth metal salt of a phosphoric- or phosphonic acid to an olefin polymer stream exiting a polymerization reactor, each in a quantity at least sufficient to deactivate active catalytic species in the polymer stream and neutralize catalyst residues, respectively, and subsequently recovering the resulting polymer product.

The invention relates to an application of a Micro-TCA system, more particularly relates to a multifunctional, economical and manageable MCH required by the system, belonging to the technical field of network processing. The MCH card is composed by a line card module, a NPU module, an exchange module and an IPMI module; the line card module is connected with the NPU module through a gigabit Ethernet, the NPU module is connected with the exchange module through the gigabit Ethernet and a configuration channel, the exchange module is connected with a backboard golden finger through the gigabit Ethernet. An external interface of the line card module is a gigabit electric hole or a gigabit optical hole. The integrated circuit board size and golden finger pin functions of the Micro-TCA system are consistent with the Micro-TCA criterion. The invention disposes the high bandwidth channel among a plurality of integrated circuit boards into one integrated circuit board, efficiently solving the problem about shortage of bandwidth among the integrated circuit boards, realizing less slot positions and compacter system frame, and reducing the cost of entire Micro-TCA system; and the system reliability is improved by lessening the backboard connections, removing power source loss of the line card and the NPU card.

The invention discloses a carbon fiber spinning assembly and bottom spinneret plate cleaning method, comprising the following steps: after a spinning machine conducts high-temperature melt spinning, introducing asphalt or resin with low softening points into a spinning machine box to completely fill a carbon fiber spinning assembly and a bottom spinneret plate; discharging the asphalt or the resinin the carbon fiber spinning assembly and the bottom spinneret plate through high-temperature and high-purity nitrogen; detaching the carbon fiber spinning assembly and the bottom spinneret plate from the spinning machine box and cooling them; carrying out vacuum high-temperature calcination on the carbon fiber spinning assembly and the bottom spinneret plate; primarily flushing the carbon fiberspinning assembly and the bottom spinneret plate by a high-pressure air gun; cleaning the carbon fiber spinning assembly and the bottom spinneret plate through ultrasonic vibration; and secondarily flushing the carbon fiber spinning assembly and the bottom spinneret plate through the high-pressure air gun. According to the method, the carbon fiber assembly and the bottom spinneret plate can be efficiently cleaned, so that the spinning assembly and spinneret orifices are smooth and clean, and certain precision and dimensional stability are kept.

The invention relates to a preparation method of an environment-friendly flame-retardant fiberboard, and belongs to the technical field of decorative materials. Magnesium nitrate and aluminum nitrate are used as raw materials, rare earth and diatomite are doped, diatomite with magnesium-aluminum hydroxide of a layered structure deposited is prepared through a coprecipitation method, the layered structure is bridged through the diatomite, the blocking effect is achieved, holes in the surface of a carbon layer formed in the combustion process are reduced, the better blocking effect is achieved, further entry and release of combustible gas and oxygen are inhibited, and at the same time, cooperation with the rare earth elements is adopted to achieve an effective smoke suppression effect, cooperation with a flame retardant is adopted to achieve flame retardance, the flame retardance of the fiberboard is effectively improved, the effects of reducing smoke and heat release in the combustion process are achieved, and meanwhile, the effects of dehumidification, deodorization, indoor air purification and the like by utilizing the diatomite are achieved. Diatomite is used as an additive to manufacture the fiberboard which is light in weight, flame-retardant and capable of reducing indoor toxic gas, and the artificial board is endowed with new functions of flame retardance, low formaldehyde release and capability of adjusting the indoor environment.

The invention discloses a grouting and sealing waterproof shield segment structure and a construction method thereof. The segment structure comprises four splicing surfaces, wherein the four splicingsurfaces are arranged by adopting the same structure and include a rubber waterstop area, a grouting and sealing area, a small grouting hole and a bolt hole from outside to inside. The method specifically comprises the following steps of (1) forming a sealed grouting and sealing area by grouting and sealing grooves of adjacent segments after the segments are spliced; (2) using grouting equipment for pouring sealing grout to the grouting grooves from the small grouting hole to fill up during shield construction; and (3) immediately sealing the small grouting hole when a guide tube is pulled outso as to prevent the grout from flowing back. According to the grouting and sealing waterproof shield segment structure and the construction method, the problem of leakage of water in a shield tunnelcan be economically and effectively solved.

The invention discloses a low-permeability increment ceramic coated diaphragm and a preparation method thereof, and the coated diaphragm has the advantages of small permeability increment, high peel strength, high heat-resistant temperature, safety, environmental protection and the like, and is beneficial to lithium ion transmission and reduction of internal resistance of the diaphragm. According to the method, two different binders, namely a water-resistant binder and a solution binder (hydrolytic binder), are used, a water washing process is added after coating and drying are completed, the solution binder is cleaned away, so that hole blocking of the binders is reduced, the ventilation increment is reduced, and in addition, the process has the characteristics of safety, environmental protection and no pollution due to the fact that water is used as a solvent. The invention discloses a low-permeability increment ceramic coated diaphragm and a preparation method thereof, the process design is reasonable, the operation is simple, the prepared ceramic coated diaphragm not only has excellent permeability, small permeability increment and excellent heat resistance, the adhesive force between a ceramic coating and the diaphragm is ensured, and the low-permeability increment ceramic coated diaphragm has relatively high practicability.

The invention provides an organic light-emitting display device. Specific layout is carried out on pixels, the hole size of the adopted vacuum evaporation mask plate is increased greatly, under the same mask plate design standards, a higher-resolution pixel design standards can be more applicable, and thus manufacturing of the display device of higher resolution can be realized. On the premise that the technology complexity and the processes are not increased, four-color display can be realized through using three-color stacking, and defects of blocked holes, deformation and the like of the mask plate can be reduced.

The invention provides an evaporation device, which comprises an evaporating source and an electromagnetic induction heater. The evaporating source is provided with a shell and a plurality of evaporating nozzles arranged at the top of the shell; and the electromagnetic induction heater is used for heating the evaporating nozzles, and arranged to have the adjustable distance relative to the evaporating nozzles. By adopting the electromagnetic induction heater, vortexes are generated in the evaporating nozzles and quickly heated, blocked materials are evaporated, and the phenomenon that the evaporating nozzles are blocked in the evaporating process of the organic materials can be conveniently avoided.

The invention relates to an integrated treatment method for viscous oil wastewater, and belongs to the technical field of water treatment. The method mainly utilizes demulsification, sedimentation hardness-removal, flocculation, oxidation, ultrafiltration, adsorption and reverse osmosis treatments to achieve the comprehensive and stable running effect. The method has the advantages of cooperationof all units, stability in running, and good water discharge effect.