421results about How to "Solve high" patented technology

The invention relates to a rapid prototyping apparatus for the manufacturing of three dimensional objects by additive treatment of cross sections comprising a wholly or partially light-sensitive material, said apparatus comprising at least one light source for illumination of a cross section of the light-sensitive material by at least one spatial light modulator of individually controllable light modulators, wherein at least one light source is optically coupled with a plurality of light guides arranged with respect to the spatial light modulator arrangement in such a manner that each light guide illuminates a sub-area of the cross section.According to the invention, it is possible to obtain a significant simplification of an RP design system, just as the apparatuses designed are essentially capable of creating prototypes of any size, according to the invention.

The invention belongs to the technical field of environment protection, and relates to a device and a process for temperature difference crystallizing ammonia process desulfurization, which is especially suitable for the ammonia process modification and newly-built desulfurization of the original calcium process desulfurization device. The device comprises a desulfurization tower, a densifying device, a gas-liquid heat exchanger, a circulating pump, a concentration circulating pump, a magma pump, a concentration crystallization tank and a drying system, wherein the desulfurization tower, the circulating pump, the magma pump and the drying system adopt the devices in the original calcium process desulfurization; the lower part of the densifying device is provided with a gas distributor, andthe upper part thereof is provided with spray heads which are arranged in 2-3 layers; spray heads in the desulfurization tower are arranged in 2-4 layers, a liquid supplementation pipe is connected with the spray heads at the lowest layer in the desulfurization tower; the concentration crystallization tank is a tank with a conical bottom part; and the upper part of the concentration crystallization tank is provided with a pipeline to be connected with the bottom of the densifying device, the middle of the concentration crystallization tank is provided with a pipeline to be connected with theconcentration circulating pump, and the bottom is provided with a pipeline to be connected with the magma pump. The invention can farthest utilize the original devices on the premise of guaranteeing the normal desulfurization efficiency, thereby saving the investment, reducing the energy consumption and eliminating the secondary pollution.

Submicron particles of an organic compound, such as therapeutic and diagnostic agent are disclosed. The organic compound particles are associated with at least two surfactants including a block copolymer and phospholipids conjugated with a hydrophilic polymer.

Specified phenylalanine derivatives and analogues thereof have an antagonistic activity to α4 integrin. They are used as therapeutic agents for various diseases concerning α4 integrin.

The invention discloses a polyvinyl alcohol-polyurethane elastic buffing wheel and a preparation method of the polyvinyl alcohol-polyurethane elastic buffing wheel. The preparation method comprises the steps that firstly, polyvinyl alcohol is mixed with distilled water, and the mixture is dissolved for 20-30 minutes under the condition of 50-95 DEG C water bath and at the rotation speed of 400-600r / min to obtain a polyvinyl alcohol aqueous solution; then, the polyvinyl alcohol aqueous solution is heated up to 30-100 DEG C, grinding materials are firstly added into the polyvinyl alcohol aqueous solution, after the mixture of the grinding materials and the polyvinyl alcohol aqueous solution is stirred and mixed evenly at the rotation speed of 400-600r / min, polyurethane pre-polymers, catalysts and air hole generating agents are added, and all the components are stirred and mixed evenly at the rotation speed of 400-600r / min and react for 5-10min; solidification is conducted for 2-4h under the condition of 30-100 DEG C, and then the buffing wheel which is good in elasticity, good in water resistance, good in heat-dissipating performance and high in mechanical strength is obtained. The elastic buffing wheel is even in foam hole, good in abrasion resistance and grinding force, not prone to deforming or curling in humid environment and applicable to long-time grinding work.

A system, method and computer-readable medium for providing a program featuring the re-purposing of consumer assets in a manner which allows the consumer to satisfy existing debt obligations in place with one or more creditors. The system, method and computer-readable medium re-purposes a different set of consumer assets—monthly debt payment savings, consumer necessity buying power, and previously untapped non-dollar assets- to repay creditor debts with a highly affordable and positive consumer solution that frees up cash flow for household necessity shopping and other needs. The system, method and computer-readable medium facilitate the creation of closed loop local market networks that expand to a national network of local market networks that enable consumers to affordably repay delinquent unsecured debts to creditors, including 90+ day delinquent debt.

The invention discloses a hyperspectral and panchromatic image fusion method for extracting spatial features based on AAE, which solves the problems of serious spectral distortion and insufficient spatial detail injection in the existing hyperspectral image fusion, and comprises the following implementation steps of: obtaining an image data set for preprocessing; constructing and training a hyperspectral image spectrum constraint adversarial auto-encoder network; extracting spatial features of the hyperspectral image; acquiring space details of the enhanced panchromatic image; fusing the spatial information of the hyperspectral image and the enhanced panchromatic image; constructing a gain matrix; and obtaining a hyperspectral image with high spatial resolution. Hyperspectral and panchromatic image space information is considered at the same time, deep space features are extracted through AAE, spectral loss is effectively reduced, and the space resolution is effectively improved. Simulation proves that the hyperspectral image fusion method is better in fusion index and visual effect space and spectral performance, better in space detail maintenance and more perfect in spectral information, and is used for hyperspectral image fusion processing.

A catalyst composition is provided for use on a diesel particulate filter which facilitates the oxidation of soot from diesel engine exhaust and which generates low NO2 emissions during regeneration of the filter. The catalyst composition includes a catalytic metal comprising a platinum group metal selected from Pt, Pd, Pt—Pd, or combinations thereof, an active metal oxide component containing Cu and La; and an oxide component selected from oxides of Co, Fe, or combinations thereof. The catalyst composition includes a support selected from alumina, silica, zirconia, or combinations thereof. The catalyst composition may be provided on a diesel particulate filter by impregnating the filter with an alumina, silica or zirconia sol solution modified with glycerol and / or saccharose, impregnating the filter with a stabilizing solution, and impregnating the filter with a solution containing the catalyst metal precursor(s), the active metal oxide precursor(s) and the Co or Fe oxide(s). The resulting catalyst coated diesel particulate filter provides effective soot oxidation, exhibits good thermal stability, has a high BET surface area, exhibits minimal backpressure, and produces low NO2 emissions during filter regeneration.

A method and circuit for performing channel equalisation in a high speed transmission system comprising a transmitter and receiver. An application specific digital signal processor, ASDSP, performs channel equalisation and compensation on digital data received from an analogue-to digital converter of the receiver. The ASDSP is operable to execute an application specific set of op-codes needed for performing channel equalisation and compensation. An ASDSP register is coupled between the ASDSP and a system CPU in a feedback loop for performing channel equalisation at the receiver. The ASDSP stores equalizer parameters and bit error rate measurements used by the ASDSP for performing channel equalisation and compensation. An ASDSP program storage memory, coupled to and accessible by the ASDSP, stores an ASDSP micro-sequence program for controlling the processing steps for channel equalisation and dataflow through the ASDSP.

The invention relates to a radio frequency power amplifier based on a transformer, comprising an input transformer, a driving circuit, a power amplification circuit, an impedance matching network and an output transformer that are successively connected; the input end of the input transformer is respectively connected with a single-end radio frequency input (RFIN) signal and the ground; the output end of the input transformer is connected with the input end of the driver circuit; the single-end radio frequency input signal is converted into a differential signal, and the differential signal is output to the driver circuit; the differential signal of the driver circuit is output to the power amplification circuit after being amplified; and the power amplification circuit is in the cascode structure. In the radio frequency power amplifier, devices, such as an inductor, a capacitor, a transformer and the like are integrated on a substrate, impact on the performance of the amplifier by the complementary metal oxide semiconductors (CMOS) technology is effectively avoided on the premise of furthest utilizing the advantages of the CMOS technology, and circuit efficiency is improved; and compared with the traditional totally-integrated radio frequency power amplifier, the radio frequency power amplifier disclosed by the invention has the advantages of higher power and efficiency and more stable performance.

The invention relates to a special display platform for new energy automobile parts. The special display platform comprises a bottom board, wherein four universal wheels are symmetrically arranged on the lower end surface of the bottom board, through the four universal wheels, the special display platform can be moved to the needed display place, the mobility is good, and a rigid support device is mounted in the middle of the upper end surface of the bottom board; a rotation shaft is mounted on the middle part of the upper end surface of an operation table through a bearing, a display stand is welded to the upper end surface of the rotation shaft, and the upper end of the rotation shaft is mounted on a concave bracket through a bearing; the lower end of the concave bracket is welded to the operation table; a driven gear is mounted in the middle of the rotation shaft through a key, and is meshed with a drive gear, the drive gear is fixed on an output shaft of a rotation motor, and the rotation motor is mounted on the operation table through a motor base. With the special display platform, the function of simultaneously and dynamically displaying a plurality of new energy automobile parts can be achieved, meanwhile, the display height is adjustable, and the display effect is good.

The invention discloses a method for preparing a polyvinyl alcohol and polyurethane super absorbent sponge. The method includes mixing polyvinyl alcohol with distilled water at first, dissolving the polyvinyl alcohol for 20 to 30 minutes under the condition that the water bath temperature ranges from 50 DEG C to 95 DEG C and rotational speed ranges from 400r / min to 600r / min to obtain polyvinyl alcohol aqueous solution; and then heating the polyvinyl alcohol aqueous solution until the temperature of the polyvinyl alcohol aqueous solution ranges from 30 DEG C to 100 DEG C, adding water-based polyurethane prepolymer, catalysts and auxiliary foaming agents into the polyvinyl alcohol aqueous solution, stirring and uniformly mixing the mixture under the condition of rotational speed ranging from 400r / min to 600r / min, enabling the mixture to react for 5 minutes to 10 minutes, and solidifying the mixture for 2 to 4 hours at the temperature ranging from 30 DEG C to 100 DEG C to obtain the sponge with the water absorbent rate higher than 9.8. The water absorbent rate of the obtained sponge is increased to 10-20 times from the original 6-8 times of an existing polyvinyl acetal sponge, the water absorbing velocity of the sponge is increased to 8g / ming from the original 4g / ming, and the polyvinyl alcohol and polyurethane super absorbent sponge has a broad development prospect in fields of aquatic product processing, food, clinical medicine, water treatment and the like.

The invention provides a homogeneous phase immunoassay POCT detection technique and a system using same. The homogeneous phase immunoassay POCT detection technique has the characteristics of high sensitivity, high precision and wide range of chemiluminescence immune assay technique and rapidness, portability and the like of a POCT detection technique; in addition, as pure liquid phase detection, the homogeneous phase immunoassay POCT detection technique overcomes the problem that CV is relatively high due to an NC membrane, so that the detection precision is high, generally the CV can be controlled to be within 5%, and the level of precision of the POCT detection technique can reach or even exceed that of the chemiluminescence immune assay technique. In the system using the homogeneous phase immunoassay POCT detection technique, a reagent card and a POCT analyzer are separately designed, a sample to be tested is acquired by using the reagent card, and the system is convenient to carry over.

The invention discloses an industrial organic waste gas catalytic degradation catalyst cooperated with low-temperature plasma, and a preparation method and application of the catalyst. The catalyst comprises a carrier, a main active ingredient and a catalyst promotion ingredient, wherein the carrier is SiC; the main active ingredient is a mixture of at least one kind of noble metal and at least one of transition metal oxide or at least one kind of noble metal or at least one kind of transition metal oxide; the catalyst promotion ingredient is a mixture of at least one kind of rare-earth oxide and alkaline earth oxide or at least one kind of rare-earth oxide or at least one kind of alkaline earth oxide; the main active ingredient accounts for 0.1 to 5 percent of the total mass of the catalyst; the catalyst promotion ingredient accounts for 0.1 to 5 percent of the total mass of the catalyst. The catalyst provided by the invention has the advantages that the preparation is simple; the price is low; the service life is long; the performance is good; the catalyst can be used for high-efficiency removal of industrial VOCs waste gas at room temperature after being combined with plasma; in addition, the discharge of low byproducts is guaranteed.

The invention discloses a height online monitoring device and closed-loop control method for laser cladding additive forming. The online monitoring device comprises a cladding forming unit and a monitoring control unit. The cladding forming unit comprises a laser device, a cladding head and a matrix. The monitoring control unit comprises an image taking unit, a connecting frame, an image processing unit, a control unit and an execution mechanism unit. In the closed-loop control method, the image taking unit is fixed to laser cladding equipment to move along with a cladding nozzle, images including the cladding nozzle and a molten bath in the cladding additive forming process are acquired in real time, and the image processing unit is utilized for carrying out pixel processing on the images; the outlines of the cladding nozzle and the molten bath in the cladding additive forming process are extracted, and the forming thickness of a single cladding layer is obtained; and the forming height of the formed cladding layer is obtained through layer-by-layer thickness accumulation, the lifting height of a cladding spray head of the next layer is corrected in real time in a self-healing interval, process parameters are optimized in good times, and forming height closed-loop control is achieved.

The invention discloses a Web service oriented home network system architecture which comprises a physical architecture and a logical architecture. The Web service oriented home network system architecture is characterized in that a home area network is constructed by the aid of IEEE (institute of electrical and electronic engineers) 802.3 and IEEE 802.11 protocols in the architecture, the problem of semantic difference is solved by the aid of a home gateway, the home gateway is divided into a broadband router and a central server when the home gateway is designed, a home gateway software system is deployed on the central server, a virtual equipment technology is adopted in the home gateway software system of the central server and provides an operation interface and an API (application program interface) for end users and third-party application programs, and design detail, implementation algorithm and coding operation for realizing functions is completed. The Web service oriented home network system architecture has the advantages that an equipment interconnecting function which is the most important in various functions of an existing home network is realized, the problem of semantic difference of equipment is solved, and the system architecture is sufficiently flexible and expandable.

A method for coordinating and controlling a multi-terminal flexible direct current transmission system, the method comprising the following steps: (1) a sagging slope control regulated by direct current is added to a constant direct current voltage station in a multi-terminal flexible direct current transmission system; (2) the sagging slope control regulating direct current voltage is added to a constant active power station; (3) when interstation communication does not exist, two constant current voltage stations in a multi-terminal system are set as constant direct current voltage control stations, and the constant direct current voltage control stations serve as balancing nodes in a direct current network. When the system operation condition is out of the range adjusted by the direct current voltage sagging slope control, the method optimally adjusts the system direct current voltage and the power of each station, such that the direct current network can maintain the optimal voltage level after experiencing a major failure.

The embodiment of the invention provides a parallel computing method and a computing platform for security and stability analysis of large power grid, which can solve the problem that the computing and analysis efficiency is lower in the prior art. The parallel computing method comprises the following steps: dividing a computing task into at least two task sets and distributing the task set and fixed data corresponding to the task set to each computing node; sending operation data of a power grid to each computing node; and carrying out parallel commutating through each computing node according to the operation data of the power grid and the fixed data. The computing platform comprises a management node and computing nodes. The invention realizes the analysis on the safety and the stability of a large power grid by applying a large-scale parallel computing method based on data broadcast, task predistribution and time sequence control, adopts a way of combining task parallel computing and subnetwork parallel computing, simplifies the complexity of task schedule, improves the stability of the system and realizes a technical leap from offline computing of a power system to online stable analysis.

Disclosed is an efficient cleaning device. The efficient cleaning device comprises a cleaning pool, a material cleaning groove, a circulating water treating pool, a connecting pipeline and the like. Gas can be fed into the material cleaning groove to conduct bubble-type washing on materials. Enough purified water is added into the material cleaning groove to spray and flush the materials. The water and sewage penetrate through the material cleaning groove and then are sucked by a water intake formed nearby. Water of the water intake flows into the circulating water treating pool through the pipeline or a water pump and the pipeline. Impurities or sludge or high-concentration sewage can be filtered or discharged from a sewage discharging valve. The purified water obtained after being treated can flow back through the pipeline or be conveyed back to the cleaning pool or the material cleaning groove by the water pump and the pipeline to form recycling of the water. Meanwhile, the materials can be washed under the environment with cleaner water. The circulating water treating pool is independent of the cleaning pool and is provided with a filtering device, a fine filtering layer and the like, water treatment like sediment or filtering or medicine adding or ozone disinfection or sterilization and disinfection can be carried out on the water. The efficient cleaning device is suitable for fixation of materials like fruits and vegetables or continuous cleaning.

The present invention relates to a fuel cell based on the in-plate counter-flow flow field and belongs to the technical field of fuel cell. The air flow field plate of the cell unit is provided with two pairs of air ports, two groups of air flow channels with are distributed separately with each other and two groups of air through-holes which pass through the air flow field plate thereby forming the inner counter-flow flow field of the air plate. The air flow field plate is also provided with two pairs of fuel ports, two groups of fuel flow passages which are arranged separately and two groups of fuel through-holes which pass through the fuel flow field plate thereby forming the inner couter-flow flow field of the fuel plate. The air flow field plate is also provided with two pairs of fuel ports which are provided with two pairs of air ports thereby realizing the integration of two flow field plates. In the fuel cell of the invention, the gradual reduction of the concentration of each component of the fluid in one flow passage is averaged by the gradual increase of the concentration of each component of the fluid in the adjacent flow passage thereby realizing that the concentration of each component in the fluid is kept same basically in any macroscopic micro cells in the whole active region.

The invention discloses a dual-piston pressure-controlling type material steam explosion method comprising the following steps of: feeding materials into a tank body from a feed opening of the tank body; steaming towards the tank body at the rear part of the closed feed opening; when the materials are heated to the steam explosion temperature, pushing a boosting piston in the tank body to compress the materials to allow the tank body to boost to the steam explosion pressure; and quickly releasing pressure to enable the materials to expand and burst and discharging the materials. The invention discloses a steam explosion device comprising the tank body, wherein a boosting piston and a pressure-relief piston are arranged in the tank body; the feed opening, a steam inlet and a discharging port are arranged on the tank body between the initial positions of the boosting piston and the pressure-relief piston; a valve is arranged on the steam inlet; The invention also discloses an another steam explosion device comprising a tank body, wherein a boosting piston and a pressure-relief piston are arranged in the tank body; a feed opening and a discharge opening are arranged on the tank body between the initial positions of the boosting piston and the pressure-relief piston; a heating jacket is arranged on the tank body between the feed opening and the discharge opening and is provided with a heating medium inlet and a heating medium outlet; and valves are respectively arranged on the heating medium inlet and the heating medium outlet.

The invention relates to an environment-friendly processing technique of an ultrathin high-gloss downproof chemical fiber fabric. The processing technique sequentially comprises the following steps: (1) performing dyeing drying on a grey fabric with the breadth of a and the normal calendaring temperature of T to lower the a to a-delta a1, wherein delta a1 is more than zero; (2) soaking the grey fabric into impregnation liquid containing functional assistants, fully absorbing the impregnation liquid, then shaping and drying, and drawing till the breadth is equal to a-delta a2, wherein delta a2 is more than or equal to zero and less than delta a1, and the functional assistants at least comprise a protective agent and a smoothing agent; and (3) calendaring the grey fabric at the temperature of T plus delta T and under the pressure of 6-10 MPa, wherein delta T is more than or equal to 0 and less than or equal to 30 DEG C, and the breadth of the grey fabric is reduced to a-delta a3, and delta a1 is less than or equal to delta a3. The prepared fabric solves the problems of hardening, thickening, weight increasing, and non-lasting downproof effect, and can achieve downproof, wind-resistant, breathable and moisture permeable effects under conditions of environment protection and no pollution; besides, the processing technique is simple in operation.

The invention discloses an air brick stacking manipulator system and a control method. An air blank grabbing manipulator and an air brick stacking manipulator are integrated into a uniform connecting body through a portal frame foundation, after air bricks are grabbed by the air brick grabbing manipulator, the air bricks are transferred and carried subsequently by the air brick stacking manipulator, movement continuity is enhanced, working efficiency is substantially improved, the takt matching problem between two work procedures is solved, a lifting and swinging device of the whole small manipulator is integrated in a closed barrel-shaped structure, and the system is simple in structure, small in size, beautiful in appearance and convenient to mount in an inverted hanging mode; double-side supporting is formed by the large manipulator through an X-direction guide rail and a Y-direction guide rail on the two sides, and the problems that a traditional stacking manipulator is of a single stand column cantilever structure and is uneven in stress, and eccentric abrasion to the rails is caused are solved; both the two manipulators are installed in the inverted hanging mode, idle space in the portal frame space is utilized, the space utilization rate is high, and operation is not disturbed.

The invention relates to an electric power overhauling supporting device. The electric power overhauling supporting device comprises a fixed platform. Four parallel supporting chains are symmetrically installed on the upper end surface of the fixed platform. An operating platform is installed at the top ends of the four parallel supporting chains. A rotating shaft is installed in the middle of the lower end surface of the fixed platform through a bearing. A rotating motor is connected to the lower end of the rotating shaft through a coupler and installed on a bottom plate through a motor base. Three fixing shafts are uniformly arranged on the upper end surface of the bottom plate in the axis direction of the fixed platform. Three planetary wheels are installed at the upper ends of the three fixing shafts through bearings correspondingly. The inner sides of the three planetary wheels are all engaged with a sun wheel. The sun wheel is installed on the rotating shaft through a key. The outer sides of the three planetary wheels are all engaged with an inner gear ring. The electric power overhauling supporting device is capable of solving the problems that an existing substation rigid support is poor in dynamic adjustment performance, nonadjustable in height, small in application scope and the like and has the advantages of being good in rigid supporting performance, height adjustment performance and stability performance, wide in application scope, high in working efficiency and the like.

Enhanced oil recovery becomes increasingly important in satisfying the growing demand for fossil fuel. The efficiency of secondary recovery processes like water flooding is however largely influenced by the rock characteristics, fluid characteristics, chemistry and physics. For development of the full potential of secondary oil recovery, it remains a challenge to obtain sufficient knowledge about the reservoir conditions. The present invention provides a novel water-dispersed, nano-sensor composition based on. InP / ZnS quantum dots (“QDs”) and atomic silver clusters, which exhibit a bright visible fluorescence combined with dedicated sensor functionalities. The QD and silver nano-sensors were tested in simulated reservoir conditions to determine their selected functionality to these reservoir conditions. The developed nano-sensors showed improved sensor functionalities towards pH, temperature, and subterranean reservoir rock, such, as clay or limestone.

The present invention relates to medium- or high-voltage equipment having low environmental impact, including a leaktight enclosure in which there are located electrical components covered with a solid dielectric layer of varying thickness and a gaseous medium for providing electrical insulation and / or for extinguishing electric arcs that are likely to occur in said enclosure, and that comprises heptafluoroisobutyronitrile in a mixture with a dilution gas.

The invention discloses a large long cone-shaped horn cylinder part extruding forming method. The large long cone-shaped horn cylinder part extruding forming method includes the following steps that firstly, saw cutting, blanking and upsetting pre-forming are performed, a blank is put into an upsetting concave mold and an upsetting convex mold puncher chip is used for carrying out upsetting and an upsetting blank is formed; secondly, a semi-spherical bottom straight wall cylinder is extruded in a one-time mode and a pre-forming convex mold puncher chip is used for replacing the upsetting convex mold puncher chip and the upsetting blank is extruded by the semi-spherical bottom straight wall cylinder to form a pre-formed part; thirdly, secondary flaring, reshaping and cone-shaped cylinder extruding are performed, the finally-formed convex mold puncher chip is used for replacing a pre-forming convex mold puncher chip, the upsetting concave mold is replaced by a finally-forming concave mold, the pre-formed part suspends when being placed in a mold cavity of the finally- forming concave mold and the head portion of a first section rod body of the finally- forming convex mold puncher chip directly acts on a semi-spherical bottom of a center cavity of the pre-formed part. When extruding is finally finished, a third section rod body of the finally-forming convex mold puncher chip is in contact with a port of the center cavity of the pre-formed part. The cone face of the third section rod body is used for finishing flaring, shaping and cone-shaped cylinder extruding.

Provided is an anchor hole based slope afforesting method. The method comprises the following steps that firstly, reconstructing is carried out on an anchor hole; secondly, an inner space of a water and fertilizer storing cavity is divided into a water storing area and a fertilizer storing area; thirdly, a prefabricated PVC pipe is embedded into the hole opening portion of the water and fertilizer storing cavity; fourthly, parthenocissus tricuspidata and kudzu seeds are planted into the prefabricated PVC pipe, and slope afforesting is achieved. According to an anchor hole based slope afforesting system, the water and fertilizer storing cavity is formed by hole broadening of the hole opening of the anchor hole, and an anchor rod is bended at the bottom of the water and fertilizer storing cavity to form a step shape to be matched with the water and fertilizer storing cavity; the inner space of the water and fertilizer storing cavity is divided into the water storing area and the fertilizer storing area, and the parthenocissus tricuspidata and the kudzu seeds are planted into the prefabricated PVC pipe. According to the anchor hole based slope afforesting method and the system, water preserving and fertilizer preserving can be effectively achieved, the manufacturing cost is low, the afforesting effect is good, the long-acting afforesting effect is good, and the afforesting can be achieved in a short time.

Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.