10 results about "Ash preparation" patented technology

The invention discloses an ash sample preparation method of ultra-low ash coal, which comprises the following steps: (1) drying pretreatment: putting a coal sample into drying pretreatment equipment, drying according to a preset drying condition, removing external moisture in the coal sample, and enabling the coal sample to be burnt to reach a dry state; (2) firing treatment: placing the cupel filled with the coal sample in firing equipment, and performing firing treatment to ash the coal sample to obtain an ash sample; and (3) cooling, grinding and screening: after firing is finished, taking out the cupel from the firing equipment, cooling, transferring an ash sample into grinding equipment, grinding, and screening the ash sample with a preset particle size to obtain a coal ash sample. According to the method, the remarkable breakthrough that the single-time coal ash preparation efficiency of single equipment is improved by 300% is achieved. The strict specification and optimal design of the ash sample preparation method of the ultra-low ash coal provide a solid guarantee for the quality of the coal ash sample. The efficiency is greatly improved, the quality is stably guaranteed, and the comprehensive cost of coal ash preparation is reduced.

The utility model discloses sodium carbonate preparation equipment with a tail gas treatment function, which comprises a main body assembly, a tail gas treatment device and a tail gas treatment device, and is characterized in that the main body assembly comprises a fixed frame and a top plate; the homogenizing assembly comprises a motor, a rotating shaft, a driving wheel, a supporting plate, a driven wheel, a rotating rod and a stirring rod; the motor is fixed to the middle of the top of the top plate, the output end of the motor extends into the fixing frame, the rotating shaft is connected to the output end of the motor, the driving wheel is connected to the lowermost end of the rotating shaft through a screw, the supporting plate is welded to the middle of the lower surface of the top plate, the rotating rod is rotationally connected to the lower end of the supporting plate, the driven wheel is connected to the rotating rod through a screw, and the stirring rod is fixed to one end of the rotating rod. And the driving wheel is meshed with the driven wheel. The utility model relates to a soda ash preparation device, and aims to solve the problems that the existing soda ash preparation device reacts with acidic substances in a filter plate to remove residual alkaline substances during purification, but the acidic substances are accumulated in the filter plate, so that the acid-base neutralization reaction is slow, part of acidic substances are not fully reacted, and the tail gas treatment efficiency is influenced.

This utility model relates to the field of bamboo aggregate preparation technology, specifically to a system for utilizing waste heat from bamboo leaf ash preparation flue gas. The system includes a calcining furnace, a drying device, and a drying tower. The calcining furnace is connected to the drying device and the drying tower. A partition plate is installed inside the calcining furnace, dividing it into a first chamber and a second chamber. A preparation cylinder is installed in the second chamber and is detachably mounted on the partition plate. Several through holes are provided on the partition plate, and the first chamber communicates with the second chamber through these through holes. The system also includes a collector, pipe A, and pipe B. The collector communicates with the second chamber, and the end of pipe B communicates with the drying tower. This system solves the problems of low energy utilization efficiency in the preparation of functional additives in bamboo aggregate concrete production, lack of waste heat recovery from bamboo leaf calcination, and energy waste caused by fragmented heat supply in various process stages.

The utility model provides a tail gas purification treatment device for sodium silicate preparation, and belongs to the technical field of sodium silicate preparation. The sodium silicate preparation tail gas purification treatment device comprises the connecting assembly and the filtering assembly, firstly, waste heat of tail gas is used for fully heating water in the circulating pipe, so that the effect of waste heat energy-saving recycling is achieved, energy consumption is reduced, and the energy consumption is reduced; when the tail gas enters the treatment box, washing liquid is in full contact with the tail gas through a spraying piece, harmful substances in the tail gas are absorbed, the tail gas is purified through cooperation with a first activated carbon filter screen, and the situation that the atmospheric environment is polluted by emission is effectively avoided; and the connecting plate can be moved to drive the splitter plate to move out of the interior of the box body, flue gas impurities attached to the surface of the splitter plate can be cleaned, then the flue gas impurities attached to the surface of the splitter plate can be cleaned conveniently, meanwhile, the tail gas purification effect is improved, and therefore the practicability is improved.

The utility model discloses a reducing sieve plate type carbonizer for sodium carbonate preparation, which comprises a base, a sieve plate and a reducing carbonizer body, the base is mounted above the reducing carbonizer body, the sieve plate is clamped on the inner wall of the reducing carbonizer body, a plurality of holes are formed in the surface of the sieve plate, and the sieve plate is connected with the reducing carbonizer body. According to the variable-diameter carbonization tower disclosed by the utility model, the pore size of the variable-diameter sieve plate can be adjusted according to different reaction stages and working conditions through the matching of the adjusting assembly and the driving assembly, so that the gas-liquid mass transfer is more sufficient, and the gas-liquid mass transfer efficiency is improved. And the gas-liquid mass transfer process is optimized, so that the reaction is more sufficient and more uniform, the purity and the quality of a sodium carbonate product are favorably improved, and the increasingly stringent quality requirement of the market on sodium carbonate is met.

This invention relates to the field of gold extraction technology and discloses an automated fire testing system, comprising a manual operation area, a sample mixing and melting area, and an ash blowing area. Centered on the manual operation area, a crucible preparation area is connected in series with the starting point of the sample mixing and melting area. The process areas of the sample mixing and melting area are linearly distributed and unidirectionally connected. The melting furnace is located at the far end of the manual operation area and is connected in series with the backup area of ​​the manual operation area via an AGV, forming a closed loop. The ash blowing area is divided into a buffer area, an ash preparation area, and a processing area. The buffer area and the processing area are bidirectionally connected in a closed loop. A novel automated equipment layout is implemented to optimize temperature and process flow, reducing the impact on manual labor while shortening the conveying distance. The improved batching system allows for simultaneous batching and crucible preparation processes. The mixing platform enables pre-batching, multiple interval mixing, and the addition and covering of the covering agent, thereby significantly shortening the linear length of the sample mixing and melting area and improving production line efficiency.

The invention relates to the technical field of preparation of sodium carbonate by resource utilization of desulfurization wastewater, and discloses a method for preparing sodium carbonate by using power plant desulfurization wastewater and carbon dioxide, in particular to a method for producing high-purity sodium carbonate by taking desulfurization wastewater and carbon dioxide generated by a power plant as raw materials through a combined-soda process. The method is characterized in that NaCl in the desulfurization wastewater is concentrated and purified into saturated saline solution through a purification and concentration technology, then the saturated saline solution is combined with synthesis ammonia and carbon dioxide discharged by a power plant to form high-concentration ammonia salt mother liquor, and the high-concentration ammonia salt mother liquor is introduced into a carbonization tower to prepare sodium carbonate, so that the high-purity sodium carbonate meeting the GB / T 210-2022 superior product standard (dry basis Na2CO3 is greater than or equal to 99.2%) is stably produced. And an effective technical route is provided for zero discharge of waste water of a coal-fired power plant.

The utility model relates to the technical field of devices for preparing heavy soda ash based on hot alkali liquor, and discloses a device for preparing the heavy soda ash based on the hot alkali liquor, which adopts the following technical scheme that two groups of pipelines are arranged on one side of a reaction tank and are respectively used for placing the hot alkali liquor and liquid alkali; the reaction tank is used for reacting hot alkali liquor with liquid alkali and reducing the content of bicarbonate radicals in the hot alkali liquor, an ammonia still is arranged on one side of the reaction tank, the ammonia still is communicated with the reaction tank through a pipeline, and a liquid blending pump is arranged on the pipeline. Sodium bicarbonate in hot alkali liquor is completely converted into sodium carbonate in a mode of heating the hot alkali liquor or adding liquid alkali into the hot alkali liquor, the problems of pipeline blockage, equipment scabbing and the like caused by relatively small solubility of the sodium bicarbonate are avoided, and the converted hot alkali liquor can be used for preparing common heavy ash through solid-phase hydration. And the method can be used for preparing high-quality heavy ash by liquid-phase hydration, and can be flexibly adjusted according to market requirements and actual production conditions.

The utility model relates to the technical field of sodium silicate preparation, and discloses accurate batching and mixing equipment for sodium silicate preparation, which comprises a stirring barrel, the upper surface of the stirring barrel is fixedly connected with a U-shaped block, the interior of the U-shaped block is fixedly connected with a motor, the output end of the motor is fixedly provided with a first bevel gear, and the output end of the first bevel gear is fixedly provided with a second bevel gear. The tooth end of the first bevel gear is in meshed connection with a second bevel gear, the interior of the second bevel gear is fixedly connected with a rotating rod, the outer wall of the rotating rod is fixedly connected with a first stirring rod, the outer wall of the rotating rod is rotatably connected to the interior of a U-shaped block, and the tooth end of the first bevel gear is in meshed connection with a third bevel gear. According to the utility model, the motor drives the first bevel gear so as to drive the second bevel gear, the second bevel gear drives the rotating rod so as to drive the first stirring rod, and the first bevel gear drives the third bevel gear so as to drive the rotating drum, so that the effects that raw materials are uniformly distributed in the mixing process and the local concentration is prevented from being too high or too low are achieved.

The application discloses a kind of alkali leaching equipment in the process of aluminum ash preparation aluminum hydroxide, the equipment is integrated heating and temperature control on the basis of alkali leaching tank, containing heat buffer cavity in the flue gas conduction path downstream of calcination flue gas passageway, phase change temperature in cavity encapsulation matches the phase change heat storage material of alkali leaching process interval to dynamically buffer flue gas heat fluctuation;Multi-source sensing unit real-time acquisition reaction slurry temperature, flue gas temperature and flow data;Dual-mode control execution mechanism is accurately controlled flue gas heat input by main flow regulating valve and assisted by tank wall auxiliary heating element to fine-tune;Control module fuses feedforward compensation and feedback fine-tuning logic, and cooperate flue gas bypass branch, waste heat cascade recovery unit and double fault-tolerant mechanism, effectively overcome the problem of alkali leaching reaction temperature instability caused by calcination flue gas waste heat non-steady-state fluctuation, while ensuring high-precision temperature control of alumina leaching reaction, realize the full-chain efficient utilization of flue gas waste heat from high-temperature buffer to low-temperature preheating.