50 results about "Paper mill" patented technology

The invention relates to the technical field of papermaking, in particular to a paper mill wastewater recycling device which comprises a connecting base, a neutralizing tank, a settling tank and a purifying tank are sequentially arranged on the connecting base from right to left, a stirring structure is connected in the neutralizing tank, a filter screen cleaning structure is connected in the settling tank, and a filter screen cleaning structure is connected in the purifying tank. A plurality of groups of purification cotton are connected into the purification tank, water pumps are connected to the end surfaces of the neutralization tank, the sedimentation tank and the purification tank, a dosing funnel is connected to the end surface of the neutralization tank, and a sewage inlet pipe is connected to the side wall of the neutralization tank. A driving motor in the stirring structure can drive a rotating stirring blade to move up and down while rotating, drive a swinging stirring blade to swing while revolving and drive a moving stirring blade to move left and right while revolving through a transmission structure, so that the stirring efficiency is improved.

The invention discloses polyacrylamide for a screw press of a pulp paper plant. The polyacrylamide is prepared from the following components in parts by weight: 3 to 10 parts of acrylamide, 1 to 6 parts of 2-acrylamido-2-methylpropanesulfonic acid, 0.1 to 3 parts of dimethyl diallyl ammonium chloride, 0.01 to 1 part of hydrophobic modifier, 0.01 to 0.5 part of cross-linking agent and 0.001 to 0.01 part of initiator. The invention also discloses a preparation method of the polyacrylamide. According to the invention, through copolymerization of the composite acrylamide and the salt-resistant monomer and combination of cross-linking modification, the salt resistance, shear resistance and floc strength of polyacrylamide are improved. By introducing hydrophobic groups, the adhesiveness of the filtrate is reduced, backmixing of the squeezed filtrate is reduced, and the dehydration speed and the floc stability are balanced.

1. The name of the design product: biogas torch (premixed type). 2. The use of the design product: for processing biogas generated in the production process of sewage treatment plants, waste treatment plants, farms, chemical plants, etc.; biogas generated by anaerobic fermentation in the sewage treatment of pharmaceutical factories, distilleries, paper mills, kitchen waste treatment, landfill leachate, food factories, beverage factories, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1. 5. The top surface of the design product is not easily visible or invisible during use, and the bottom view is omitted. The bottom surface of the design product is not easily visible or invisible during use, and the top view is omitted.

This invention addresses the issue that while there is a corresponding relationship between the components and oil absorption value in the glassine paper coating process, this relationship is non-linear and cannot be easily predicted. Therefore, it provides a soft measurement model based on SA-PSO-LSSVM to predict the oil absorption value of glassine paper. This model enables accurate detection of the oil absorption value in the glassine paper coating process, providing a quick method for optimizing the glassine paper coating process. It uses real daily production data from paper mills and is applicable to the actual production activities of most paper mills.

The utility model provides a kind of wastewater precipitation recovery device for paper mill, it is related to papermaking wastewater recovery technical field, and it includes: waste liquid precipitation body, the upper surface of waste liquid precipitation body is fixed with stirring motor, the lower end of stirring motor is connected with stirring paddle by stirring shaft, the inside of fine filter body is supported by transmission base insertion and has centrifugal filter cartridge, the lower end of transmission base is connected with centrifugal motor, the right side inner cylinder surface of centrifugal filter cartridge is contacted with long strip scraper, the left side inner cylinder end of centrifugal filter cartridge is provided with waste residue conveying cylinder, the inside of waste residue conveying cylinder is equipped with helical blade mechanism, the left side inner cavity wall of fine filter body is equipped with flushing nozzle by inclination frame, the upper end of inclination frame is connected with the inner cavity of fine filter body by circulating water pipe and communicates. The utility model solves the problem that the self-cleaning movement of the residue-water separation assembly vibration in the prior art is easy to aggravate the wear of the gear drive mechanism, affecting the service life of the recovery device.

The invention relates to the technical field of sludge treatment, in particular to high-activity papermaking sludge incineration ash as well as a preparation method and application thereof. The preparation method of the high-activity paper mill sludge incineration ash comprises the following steps: S1, carrying out sectional type hot air drying on dewatered paper mill sludge, so that the water content of the sludge is reduced to 15-25%; s2, feeding the dried sludge into a circulating fluidized bed incinerator, and pyrolyzing the papermaking sludge at 450-550 DEG C under an anoxic condition; carrying out activated combustion on the pyrolysis product under the conditions of oxygen enrichment and superheated steam injection at the temperature of 650-750 DEG C; then carrying out short-time stabilizing treatment on ash particles generated by activated combustion at 850-950 DEG C, and quenching; and S3, the cooled ash is ground, and the high-activity paper mill sludge incineration ash is obtained. The high-water-absorption material is prepared from the sludge incineration ash, and efficient treatment and resource utilization of dredged soil, river and lake bottom mud and engineering slurry are achieved.

The application belongs to the technical field of low-carbon cement materials, and particularly relates to a low-carbon production process and system of high belite cement clinker, wherein the low-carbon production system comprises a raw material pretreatment module, a clinker firing module, a flue gas control module and a product detection module; in the application, traditional limestone and paper mill filter residue are used as calcium raw materials, coal cinder and coal gangue are used as aluminum / silicon raw materials, phosphogypsum is used to completely replace natural gypsum as sulfur raw material, copper residue is used to adjust iron material, and finally, calcium fluoride sludge is used to replace fluorite, so that the effective utilization of solid waste is improved, resources are saved, and the adverse effects of solid waste on the surrounding environment are reduced; in the calcination process, low-temperature staged calcination is adopted, the calcination temperature is controlled to be 1200-1300 DEG C, and staged temperature rising is adopted; compared with the traditional portland cement calcination temperature, the temperature is 50-100 DEG C lower, energy consumption and carbon dioxide emission are effectively saved, and the theme of energy saving and environmental protection is met.

The invention provides an energy-saving control method for a hydrapulper process of a paper mill. According to the process energy-saving control method for the hydrapulper of the paper mill, basic parameters are set in advance equal to the liquid level, the process stage, the concentration and the rotating speed, the first priority of control logic is overload protection, and when a motor has an overload risk, the speed of the motor is controlled to be reduced; the second priority of the control logic is liquid level safety limit, and when the liquid level is too low, the motor is controlled to decelerate or stop; the third priority of the control logic is process stage adjustment, the current process stage is judged, and the rotating speed range of the motor is limited based on the process stage; the fourth priority of the control logic is concentration dynamic optimization, and the rotating speed is adjusted based on the set concentration in different process stages. According to the energy-saving control method for the hydrapulper process of the paper mill, the problem that an existing pulper runs at a constant speed and cannot meet the production requirement is solved.

1. The name of the design product: measuring component. 2. The use of the design product: the design product is used for the accessories on the paper pulp concentration meter of paper mill. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The application belongs to the technical field of white water treatment, and particularly relates to a paper mill white water multi-stage treatment and recycling system, which comprises a white water collecting module, the white water collecting module is connected with a water quality online monitoring module, the water quality online monitoring module is connected with a pretreatment adjusting module, the pretreatment adjusting module is connected with a flocculant automatic adding module, the flocculant automatic adding module is connected with a high-efficiency flocculation reaction module, the high-efficiency flocculation reaction module is connected with a multi-disc filtering module, and the multi-disc filtering module is connected with a filtrate shunt module, the application realizes efficient and refined multi-stage treatment and recycling, significantly improves the overall efficiency of the system and the value of the recycled materials, builds an intelligent closed-loop control system with data driving as the core, guarantees efficient, stable and low-cost operation of the system, forms a sustainable closed-loop operation mode integrating energy saving, bacteriostasis and safety protection, and improves the reliability and environmental friendliness of the system.

The utility model discloses a paper mill trench low-concentration tailing separation system, which comprises a trench body, a slag salvaging mechanism, a slag collecting hopper and a screw elevator, a sinking groove is concavely arranged on the bottom wall of the trench body, the slag salvaging mechanism is vertically arranged, the feeding end of the slag salvaging mechanism extends into the sinking groove, and the discharging end of the slag salvaging mechanism extends into the sinking groove. The slag collecting hopper is vertically arranged below the discharging end of the slag salvaging mechanism, the discharging end of the slag collecting hopper is connected with the feeding end of the spiral elevator, and the slag salvaging mechanism is used for collecting tailings flowing through the sinking groove and sending the tailings upwards into the slag collecting hopper. The spiral elevator is used for conveying tailings in the slag collecting hopper out, so that the tailings in the trench body can be fished up into the slag collecting hopper by the slag fishing mechanism at the sinking groove, and when the tailings in the slag collecting hopper are almost full, the tailings in the slag collecting hopper can be conveyed out in a centralized mode by the spiral elevator at the moment. And at the moment, the tailings sent by the screw elevator can be manually received by a cart and pushed to a solid garbage station for treatment.

The invention relates to a reclaimed water recycling system, a backwashing control method and an interlocking backwashing control method. The reclaimed water reuse system comprises: a discharge treatment subsystem, which is used for treating paper mill sewage into wastewater meeting the discharge standard; the recycling treatment subsystem is arranged at the downstream of the discharging treatment subsystem, the recycling treatment subsystem comprises a fine filtering part section, and the fine filtering part section is used for filtering impurities exceeding a first preset size in the wastewater; and the water supply treatment subsystem selectively connects and disconnects the fine filtering part section and / or the clear water supply part through a valve at the downstream, the water supply treatment subsystem comprises a booster pump, and the booster pump is used for outputting treated waste water and / or clear water with preset pressure to the downstream paper mill paper machine shaft seal water system.

This invention discloses an defoamer, its preparation method, and its application. By weight, it comprises the following components: 100-110 parts silicone paste; 5-8 parts polyether-modified silicone oil; 10-20 parts surfactant; 2-4 parts dispersing agent; and 200-250 parts distilled water. Based on the weight of the silicone paste, the silicone paste is prepared from raw materials comprising the following components: 100 parts organosiloxane; 6-8 parts active particles; and 1-1.5 parts silane coupling agent. The anionic surfactant of this invention helps to improve the defoaming speed of the defoamer, while simultaneously increasing the cloud point of the nonionic surfactant and improving its high-temperature resistance to prevent demulsification and failure. The nonionic surfactant assists in the fusion of the components in the defoamer, making it less prone to stratification and improving the defoamer's performance. Specifically, this invention involves adding the defoamer to the extraction and rinsing stages of black liquor during the pulping process in paper mills to achieve defoaming treatment of the black liquor.

The present disclosure relates to a method of treating an aqueous foamable medium, such as a process stream of a pulping and paper mill, comprising contacting the aqueous process stream with a defoaming agent comprising: a) at least one C12 to C40 Guerbet alcohol; and / or b) at least one polyol ester.

The invention relates to the field of reclaimed water recovery of paper mills, in particular to a reclaimed water recovery mechanism for sewage treatment of a paper mill, which is applied to mid-stage water and comprises an aerobic tank, an anaerobic tank, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, and the aerobic tank is located at one end of the anaerobic tank and used for receiving sewage of the anaerobic tank and performing biochemical treatment on the sewage; according to the method, sewage is subjected to purification treatment through an aerobic tank, a secondary sedimentation tank and a recovery tank in sequence, and in the biochemical treatment process of the sewage through the aerobic tank, an aeration machine acts on a sleeve through an aeration pipe and an aeration head to drive filler to spirally ascend in the sewage, so that the contact area between the filler and microorganisms is rapidly increased in an aerobic environment, and the biofilm culturing time is shortened; and the propagated microorganisms can spirally act on different depths of sewage, so that the sewage can be purified relatively consistently at different depths, the defect that the microorganisms cannot act on a sewage environment far away from the position of the aeration head in a time period is effectively overcome, and the comprehensive efficiency of biochemical treatment of the sewage is improved.

The application discloses a paper mill water pollution treatment device, which comprises a sedimentation treatment tank, a water inlet and a water outlet communicated with the sedimentation treatment tank, the sedimentation treatment tank is in a square shape, a V-shaped bottom with a V-shaped section is arranged in the bottom of the sedimentation treatment tank, and a sludge output mechanism matched with the V-shaped bottom is arranged in the bottom of the sedimentation treatment tank, the sedimentation treatment tank is arranged in a V-shaped structure, so that the sediments can be gathered in the center of the V-shaped bottom, the sludge pump is arranged in a movable structure, when pumping, the sludge pump is driven to move along one end of the V-shaped bottom to the other end through the moving driving mechanism, so that the whole bottom is pumped, the sludge can be completely pumped out, a sludge scraping device is not needed to be additionally arranged to cooperate with the sludge pump, the sludge is not easy to be stirred and floated up in the pumping process, and residual sludge is reduced. The sealing sleeve and the hard blow-off pipe are matched to realize the sealing of the hard blow-off pipe, and leakage is avoided.

The utility model relates to a kind of paper mill workshop interior dust removal device, when needing to carry out dust removal to paper mill workshop interior in actual production use process, the dust in workshop can be transported to the interior of spray tower body by ventilation duct, then spray tower body is operated, spray tower body is cooled and dusted and absorbs water-soluble pollutant to the gas containing dust that enters first, then dust removal gas after cooling continues to rise to gas outlet, then into gas pipe, the ultraviolet lamp tube in gas pipe excites catalyst coating and generates strong oxidizing free radical, sulfide (such as HzS, methyl mercaptan) in stench, VOCS etc. are decomposed into CO2, H20 etc. Harmless substance, then discharge through outlet, when needing to clean the adherent of ultraviolet lamp tube outer surface stickiness, mobile assembly can be operated, so that mobile assembly drives several groups of scraping component to scrape the adherent on the outer surface of ultraviolet lamp tube by connecting piece, then reset is carried out to scraping component.

The present invention pertains to the fields of industry (refrigeration installations, dairy plants, paper factories and asphalt smelting plants), commerce (hotels, warehouses and swimming pools), agriculture (aviaries, pigsties and silos) and / or residences (condominiums and houses) and relates to directly and / or indirectly heating liquid masses, more specifically water, using an electrical process in the production of heat. The electrical induction resistor (1) is formed by four electrodes arranged at 120° on a circumference and a neutral central electrode. The electrodes are surrounded by a metal bushing with a reducer (6), a stainless steel tube (7) and inner layers of insulation (8A), (8B) and (8C), with connections (9) arranged at the exposed ends of the electrodes. Results demonstrate that the heating performance of the electrical induction resistor (1), mainly for water, is greater, more efficient, safer and more effective when compared with conventional systems.

The invention relates to a preparation method of cigarette paper based on full pulp enzymolysis modification and a product and application thereof, and the preparation method comprises the following steps: carrying out enzymolysis treatment on full pulp containing hemp pulp and wood pulp by adopting xylanase under the conditions that the temperature is 45-55 DEG C and the pH value is 7.0-8.0, and carrying out papermaking on the pulp subjected to enzymolysis treatment to obtain the cigarette paper. Under the conventional production conditions of a paper mill, xylanase is adopted to conduct enzymolysis treatment on the full pulp composed of the hemp pulp and the wood pulp, then papermaking is conducted, the production energy consumption is reduced, meanwhile, the problems that when the hemp pulp is replaced by the wood pulp, the strength of cigarette paper is reduced, and the combustion performance is degraded can be solved, and the production cost is reduced. According to the method, the prepared cigarette paper can keep good physical properties, the release amount of tar and CO of cigarettes can be reduced synergistically, the method is completely compatible with an existing production line, the existing white water condition of a paper mill can be directly utilized, the pH and temperature do not need to be adjusted additionally, the cost is saved, and the technology has excellent industrial popularization prospects.

The application provides a plate truck identification method, which realizes sub-pixel level segmentation and positioning of a high plate loading surface of a plate truck, a whole vehicle loading surface and a height increasing tool (such as a small stool) by orthogonal projection conversion from a three-dimensional point cloud to a two-dimensional image, construction of an instance segmentation model combining a convolutional neural network and a Transformer architecture, and output of verified three-dimensional corner point coordinates to a downstream intelligent logistics system after multi-dimensional geometric constraint verification. The method can support automatic loading of paper rolls by unmanned forklifts in paper mills, automatic stacking of container goods and other industrial scenes, and provide centimeter-level spatial positioning guarantee for automatic loading and unloading.

The utility model discloses a white mud desulfurization system. A large amount of white mud is generated by paper mills around a power plant, the white mud comes from waste residues generated by papermaking, the main component of the white mud is calcium carbonate, and the white mud can be completely used as a desulfurizing agent. The water content of the white mud reaches about 30%, and the white mud is convenient to transport. The device comprises a dissolving tank, a water supply pipeline and a mud supply pipeline, the water supply pipeline and the mud supply pipeline are respectively communicated with the dissolving tank, the dissolving tank is connected with a circulation pipeline for slurry circulation, a liquid outlet of the dissolving tank is communicated with at least one slurry supply pipeline, and the slurry supply pipeline is communicated with the dissolving tank. A slurry supply pump is mounted on each slurry supply pipeline, and each slurry supply pipeline is communicated to an absorption tower. The device is used for white mud desulfurization.

The invention relates to the technical field of wastewater deodorization, purification and recovery, in particular to a paper mill wastewater deodorization, purification and recovery device which comprises a purification barrel, a purification partition plate and a filter sieve plate are sequentially connected in an inner cavity of the purification barrel from top to bottom, and a stirring structure is connected in the inner cavity of the purification barrel and located above the purification partition plate. A cleanable slag guide structure is connected to the position, located on the upper portion, in an inner cavity of the purification barrel, and a controller is connected to the side wall of the purification barrel. A driving motor in the stirring structure can drive a lifting stirring blade to rotate and simultaneously drive the lifting stirring blade to move up and down in a reciprocating manner through a transmission structure, and drives a movable stirring blade to move while driving the movable stirring blade to revolve and rotate, so that the lifting stirring blade and the movable stirring blade can stir in a diversified manner; therefore, the wastewater and the purifying agent are mixed more sufficiently, and the wastewater purifying effect is improved.

The utility model belongs to the technical field of grinding tool machining, and particularly relates to a conical grinding tool machining device of a papermaking pulping machine, which comprises a supporting side plate, an electric telescopic rod, a rotating motor I and a rotating motor II, a positioning table is arranged on one side of the supporting side plate, and a top plate is arranged at the top of one side of the supporting side plate. The electric telescopic rod is fixedly connected to the bottom of the top plate, the first rotating motor is fixedly connected to the bottom of the electric telescopic rod, a conical block is arranged at the bottom of the first rotating motor, and a sand cleaning assembly is slidably connected to one side of the conical block; through rotation of the conical block and the threaded rod, the sand removal assembly can be driven to rotate and slide up and down in a gap between the conical block and the grinding disc, so that the contact area of the sand removal assembly and the grinding disc is guaranteed, and the situation that sand removal is affected by many dead angles due to the small space in the grinding disc and the small distance between grinding patterns is reduced; and the sand cleaning efficiency of the sand cleaning assembly on the grinding disc is improved.

The utility model provides a paper thickness detection device for paper mill workshop, its characterized in being including support structure, pretreatment structure, detection structure, the one side of support structure is provided with pretreatment structure, detection structure, support structure and pretreatment structure, detection structure are connected through bolt, nut, the utility model of improvement pretreatment structure, the pretreatment structure that is composed of telescopic cylinder B, pressing plate, rubber protection sleeve, paper dust dust catcher, collection box, telescopic cylinder B can drive pressing plate and realize accurate up and down movement, through the stable pressure of exerting is even to paper and carries out the even processing, can effectively eliminate paper because of transport, the wrinkle, curling etc. of stacking generation, even after the paper thickness distribution is more even, can pressing plate one side through the rubber protection sleeve connected of adhesive way, avoid the hard pressing plate direct contact and lead to paper edge breakage, indentation or tear, especially suitable for processing thinner, easily broken paper, reduce production cost.

The utility model provides paper slitting equipment for a paper mill, and relates to the field of paper slitting. The paper mill paper slitting equipment comprises a mounting frame, a slitting mechanism is arranged in the middle of the mounting frame, the slitting mechanism comprises a supporting roller, a limiting roller and a slitting knife, the supporting roller is rotationally connected with the mounting frame, a scale plate is fixedly connected to the surface of the limiting roller, an impurity removing mechanism is arranged in the middle of the mounting frame, and the scale plate is fixedly connected to the surface of the limiting roller. The impurity removing mechanism comprises a suction box fixedly connected with the mounting frame, and the bottom of the suction box fixedly communicates with a filter cartridge. According to the paper slitting equipment for the paper mill, the position of a slitting knife is accurately adjusted through a scale plate, the paper cutting accuracy is improved, the slitting knife is driven to rotate by rotating a supporting roller and controlling a limiting roller to rotate, paper is slit, paper fragments and dust are sucked through a suction box, impurities are filtered through a filter cylinder, and the paper cutting efficiency is improved. Impurities are prevented from being diffused into the external environment, and the paper cutting yield is increased.

The invention discloses a technology for reducing papermaking white mud and then preparing the papermaking white mud into calcium oxide and related calcining equipment, relates to the technical field of preparation of calcium oxide through reduction of white mud, and solves the problems that in the prior art, drying efficiency is low, energy consumption is high, the white mud is prone to hardening, and calcining and discharging are inconvenient. A calcining mechanism is arranged on the right side of the top of the base. Through cooperation of the mechanisms and the process, resource utilization of the white mud is achieved, the white mud generated by sewage treatment of a paper mill is reduced to be prepared into calcium oxide, and solid waste discharge pollution is reduced; a process closed loop is formed, reduced calcium oxide is reused for sewage treatment, raw material purchase is reduced, calcination waste heat is used for white mud drying, and the treatment cost is reduced; the structural design is optimized, the drying mechanism increases the contact area of white mud and hot air, caking crushing, feeding and drying are efficiently linked, the calcining mechanism automatically unloads, and the production efficiency is improved.

The invention discloses polyacrylamide for a plate-and-frame filter press of a pulp paper plant. The polyacrylamide is prepared from the following raw materials in parts by weight: 75 to 85 percent of acrylamide, 8 to 12 percent of methacryloyloxyethyl trimethyl ammonium chloride, 3 to 6 percent of octadecyl methacrylate, 0.02 to 0.1 percent of cross-linking agent and 0.05 to 0.2 percent of initiator. The invention also discloses a preparation method of the polyacrylamide for the plate-and-frame filter press of the pulp paper factory. The polyacrylamide for the plate-and-frame filter press of the pulp paper plant can improve the paper pulp dehydration efficiency, reduce the water content of a filter cake and enhance the stripping property of the mud cake.

The invention provides an online replacement method for a drying cylinder shaft head of a paper mill. The online replacement method is characterized by comprising the following steps of: 1, performing power failure and safety isolation on equipment; secondly, auxiliary equipment special for the drying cylinder shaft head is selected to conduct auxiliary supporting on the drying cylinder shaft head; thirdly, a new shaft head is replaced; 4, detecting and debugging; the special auxiliary supporting equipment is arranged, the hydraulic cylinders are matched with the supporting rings, the drying cylinder shaft head is replaced more quickly and conveniently, meanwhile, the replaced shaft head can be conveniently moved to a designated position to be maintained, operation is easy and convenient, and the working efficiency is improved.

This invention relates to the field of environmental engineering and waste resource utilization technology, and discloses a modified biochar preparation and application for enhancing methane production from anaerobic fermentation of recycled paper mill wastewater. The modified biochar uses recycled paper mill wastewater sludge biochar as a base, which is sequentially modified by loading nano-manganese iron spinel and encapsulating polyaniline conductive polymer. The material of this invention possesses high conductivity, paramagnetism, selective adsorption, and microbial carrier functions, synergistically promoting direct interspecies electron transfer, breaking down recalcitrant organic matter, adsorbing toxic substances, and buffering system pH, thereby significantly improving methane production, rate, and system stability during anaerobic fermentation of recycled paper mill wastewater. This invention achieves "waste-to-waste treatment," providing new materials and technologies for the efficient energy recovery of recycled paper mill wastewater.