37results about How to "Reduce unit consumption" patented technology

This invention discloses a method for synthesizing cefotiam, using 7-aminocephalosporanic acid (7-ACA) as the parent nucleus and introducing a 4-dimethylaminopyridine-dimethyl carbonate composite catalytic system. The reaction is carried out in a one-pot process involving 3-position nucleophilic substitution, 7-position amidation, and simultaneous deprotection in a green mixed solvent of ionic liquid [BMIM]BF₄-water with 1-(2-dimethylaminoethyl)-1H-5-mercapto-tetrazole and compound I. This method simplifies the process, improves selectivity, produces a high-purity product with stable yield, and is suitable for industrial production.

The application discloses a zinc powder automatic control method, device and system for antimony salt purification process, which comprises the following steps: constructing a copper and cobalt removal fitting model, calculating the optimal potential setting value by using a particle swarm algorithm and setting the potential setting value; updating the potential setting value by using a fuzzy algorithm and a case reasoning method; constructing a three-dimensional fuzzy rule according to the difference between the current potential measurement value and the potential setting value, generating a zinc powder adjustment amount, adding the current zinc powder addition amount to obtain a new zinc powder amount setting value, writing the new zinc powder amount setting value into a DCS system on line, and controlling the automatic feeding device to add zinc powder. The above steps are repeated to achieve stable potential control and realize the minimum zinc powder consumption. The zinc powder automatic control method for the antimony salt purification process, which automatically adjusts the zinc powder addition amount according to the potential fluctuation, realizes accurate control of the zinc powder addition amount, effectively reduces the zinc powder consumption in zinc hydrometallurgy, and reduces the production cost in the antimony salt purification process.

The present application provides a kind of open-air blasting hole net parameter determination method, device, electronic equipment and detection system, belongs to blasting engineering technical field.The method comprises: S1, obtains the rock mass explosibility parameter of target blast area, initial hole net parameter;S2, the parameters obtained and blasting energy parameters are input into numerical simulation model, and output prediction result;S3, obtains the measured result according to the current hole net parameter execution blasting;S4, according to the measured result and prediction result, corrects the parameters of numerical simulation model;S5, optimizes hole net parameter;S6, based on the iteration control of multi-objective optimization repeatedly executes S2-S5, and the first preset number of iterations control executes S2-S5, subsequent iteration control only executes S2 and S5;Until the prediction boulder rate exceeds the first threshold value, stop iteration, and the optimal hole net parameter with the prediction boulder rate less than the first threshold value is determined as target hole net parameter.The method is used to solve the problem of high explosive specific consumption in related art.

The utility model provides a kettle for dehydration and alcohol removal of dichloroethane, which comprises a reaction kettle, the reaction kettle comprises a kettle body, a stirring mechanism is fixedly arranged at the top of the kettle body, a stirring shaft is fixedly connected with a transmission mechanism through a support rod, the bottom of the transmission mechanism is fixedly connected with a mixing mechanism, the mixing mechanism comprises a connecting seat, a stirring rod and a hydraulic cylinder, the connecting seat is fixedly connected with the bottom of the enclosure, the top end of the stirring rod is rotatably connected with the interior of the connecting seat, and a plurality of uniformly distributed rod bodies are arranged on the stirring rod. The stirring mechanism and the mixing mechanism are arranged in the kettle body and are matched to realize full mixing, and the mixing mechanism can be folded after stirring, so that the mixing efficiency can be improved, the subsequent standing layering cannot be influenced, the production period of dichloroethane can be effectively shortened, the production efficiency is improved, and the production cost is reduced. The dichloroethane recovery solvent is subjected to washing alcohol removal treatment, and the yield of acylation reaction is better stabilized and improved, so that the solvent scrap consumption and the production cost are reduced.

The application discloses a CO2 blasting intelligent control system and method based on digital twinning and edge computing, which deeply integrates wireless ad hoc network, radio frequency energy activation, edge computing collaborative decision and digital twinning modeling, realizes technical leap from preset triggering to intelligent closed loop, generates personalized parameters based on digital twinning model, combines edge computing real-time sensing and collaborative decision, reduces blasting vibration, improves ore crushing uniformity, reduces secondary crushing energy consumption, and improves blasting accuracy; radio frequency energy activation and electronic safety lock mechanism are adopted to realize zero live standby before detonation, eliminate early explosion risk caused by stray current and misoperation; the operator can complete all operations in a safe area one kilometer away, which essentially improves safety; through the wireless ad hoc network, the disconnection failure of wired connection is eliminated, intelligent collaborative detonation reduces the large block rate, the feedback optimization mechanism continuously reduces the unit consumption of explosives, and the comprehensive cost is reduced.

This invention discloses a stable combustion control system based on a multi-dimensional furnace combustion measurement method, specifically relating to the field of furnace combustion measurement. This includes multi-dimensional sensor data acquisition, feature parameter quantification and extraction, combustion stability modeling, intelligent graded stable combustion control, iterative optimization of control effect, and dynamic evaluation of combustion state. Multi-dimensional sensor data acquisition involves synchronously acquiring data through an array of sensors. Feature parameter quantification and extraction involves preprocessing the acquired data to extract key feature parameters. Combustion stability modeling involves constructing a quantitative evaluation model of the combustion stability index based on the key feature parameters. Intelligent graded stable combustion control involves triggering a three-stage direct injection response mechanism for the fuel gun based on the combustion stability index, combined with an adaptive energy matching algorithm to dynamically adjust the stable combustion energy injection. This invention, through a multi-dimensional sensor array and feature extraction algorithm, achieves advanced identification of early combustion deterioration, solving the problem of lag in single flame detector monitoring.

The utility model provides a crude methanol refining device which comprises a pre-rectifying tower, the pre-rectifying tower is respectively connected with a side line tower and a pressurizing tower, the pressurizing tower is connected with an atmospheric tower, and a pre-tower reboiler, a side line tower reboiler, a pressurizing tower reboiler and an atmospheric tower reboiler are respectively arranged on the pre-rectifying tower, the side line tower, the pressurizing tower and the atmospheric tower. The gas phase extracted from the top of the atmospheric tower exchanges heat with the pre-tower reboiler and the side tower reboiler; gas extracted from the top of the pressurizing tower exchanges heat with a reboiler of the atmospheric tower; the thermal coupling technology of the pre-rectifying tower, the side tower, the pressurizing tower and the atmospheric tower is adopted, a heat exchange network is optimized, the energy-saving space is improved, methanol with the concentration larger than 99.99% can be extracted, and the content of ethanol is 10-200 ppm; according to the method, the original devices such as a pre-rectifying tower, a pressurizing tower and an atmospheric tower are improved, the improvement cost is low, and compared with the traditional methanol process, the unit consumption of steam can be reduced to 0.7-0.8 t steam / t refined alcohol, so that the energy consumption is greatly reduced.

The utility model discloses a decoloring device for calcium aspartate production, and relates to a decoloring device, the device comprises a main decoloring reactor and a secondary decoloring treatment unit, and the main decoloring reactor and the secondary decoloring treatment unit are connected in series for operation through a pipeline system. Wherein the main decolorizing reactor comprises a barrel structure, a feed port is formed in the top end of the barrel structure, a discharge port is formed in the bottom end, and the feed port and the discharge port form a closed loop through an external circulating pump; and the discharge hole is connected to the secondary decolorization treatment unit through a three-way valve in a shunting manner. A mechanical stirring assembly is coaxially arranged in the cylinder, a plurality of inclined adsorption units are uniformly distributed on the periphery of the mechanical stirring assembly in the circumferential direction, and each unit and a stirring shaft form an inclination angle and are spirally distributed in the circumferential direction. According to the decoloring device, a synergistic mechanism of an activated carbon modular carrier and a composite stirring system is constructed, so that the efficient mass transfer characteristic of mechanical stirring is reserved, solid-liquid contact is enhanced by utilizing the micro-disturbance effect of bubbles, meanwhile, direct contact abrasion of activated carbon and moving parts is avoided, and further, the service life of the decoloring device is prolonged. The device can obviously improve the adsorption utilization rate of unit activated carbon.

This invention relates to the field of coal washing and processing technology, and discloses a method and computer equipment for integrating a chemical dosing system and a filter press system in a coal preparation plant. The method includes the following steps: the chemical dosing system calculates the target value of the flocculant based on the raw coal quantity and process parameters, and generates the real-time flocculant flow rate by combining turbidity feedback correction. Key parameters are introduced, and the filter press system monitors the concentration pressure, controls operation, and generates an operating sequence. During the low-pressure stage, a follow-up strategy is implemented, using the real-time flocculant flow rate and critical proportionality constant to calculate the target flow rate of the filter aid and adjust the frequency. During the non-low-pressure stage, a feedback strategy is implemented, collecting the effective filter press feeding time according to the operating sequence, comparing it with the standard time, and then performing reverse feedback adjustment to correct the filter aid pump frequency. This invention overcomes the impact of process lag by constructing a segmented closed-loop control logic across systems, achieving dynamic and precise control of the chemicals, improving filter press efficiency and reducing costs while ensuring concentration effects.

The invention discloses a wet dust removal circulating water purification cooperative control method and system based on dust removal load feed-forward compensation. The method comprises the following steps: constructing a multi-source heterogeneous data and dynamic space-time alignment database; establishing a deep learning model, and predicting flux characteristics of future pollutants according to the working condition data of the dust removal system; constructing a hydrodynamic model, and calculating the dynamic time lag of pollutant transportation; and taking the predicted flux characteristics and the dynamic time lag as feed-forward signals, performing cooperative control on agent addition and equipment of the circulating water purification system, and feeding back closed-loop correction based on the effluent quality. Through prospective prediction of the dust removal load and accurate calculation of pollutant conveying time lag, predictive control of the purification system is realized, the problem of response lag of traditional feedback control is solved, the load impact resistance and control precision of the system are improved, the medicament ratio can be optimized, and medicament consumption can be reduced.

This invention relates to the technical field of functional finishing of nonwoven fabrics, specifically to a microcapsule preparation process and a functional finishing process for nonwoven fabrics. The microcapsule preparation process includes the following steps: dissolving bisphenol A in an aqueous sodium hydroxide solution to prepare a mixed solution; dissolving polytetrafluoroethylene emulsion and a water- and oil-repellent agent in a mixed solution of hexamethylene diisocyanate and trichloroethane; slowly and completely adding the mixed trichloroethane emulsion to the sodium hydroxide and bisphenol A mixed solution, stirring thoroughly to ensure uniform dispersion; heating the uniformly dispersed mixed solution to 45-55°C, causing hexamethylene diisocyanate and bisphenol A to undergo a condensation reaction at the particle interface, forming microcapsules with polyurethane as the wall material and a water- and oil-repellent agent as the core material. The microcapsules of this invention, used in the finishing process of nonwoven fabrics, can improve the stability of the treatment agent dispersion, while simultaneously improving the compatibility between components, the water- and oil-repellent properties of the woven fabric, and production efficiency.

The application provides a continuous production device and method for preparing squalane from squalene. The continuous production device comprises a feeding unit, a reaction unit and a separation unit connected in sequence; the reaction unit comprises a liquid-phase hydrogenation reactor provided with a catalyst fixed bed inside, which is used for catalyzing the continuous hydrogenation reaction of squalene raw materials and hydrogen; the liquid-phase hydrogenation reactor adopts gas-liquid countercurrent contact and is provided with a gas-liquid double circulation temperature control system, which is used for circulating and cooling the gas-phase materials and liquid-phase materials participating in the reaction respectively, so as to strictly control the bed temperature distribution; and the device further comprises a three-stage flash evaporation system, which is used for separating and purifying the liquid-phase materials after hydrogenation and recovering the solvent. The application can realize continuous hydrogenation and excellent bed temperature distribution control, and the hydrogen and solvent consumption of the application is low, which can significantly reduce the production operation cost. The application can replace the existing batch kettle reaction process and solve the continuous production problem of squalene for preparing squalane.

The utility model discloses a low-energy-consumption high-quality rice bran steaming system. An outlet of a rice bran articulated chute is connected with an inlet of a rice bran steaming machine through an iron remover, a rice bran cleaning sieve, a scraper conveyor and an elevator; the upper three layers of the rice bran steaming machine are steam steaming layers, the lower parts are a hot air drying layer and an air cooling layer, and the tops of a steam interlayer, a hot air interlayer and a cold air interlayer below each layer are respectively provided with a punching sieve plate; a drainage port of the steam interlayer is connected with a medium-temperature condensate water tank through a water seal, an outlet of the medium-temperature condensate water tank is connected with a hot side inlet of an air-water heat exchanger through a medium-temperature condensate water pump, and a hot side outlet of the air-water heat exchanger is connected with a low-temperature condensate water tank. An outlet of the low-temperature condensate water tank is connected with a top water spraying opening of the rice bran steaming machine through a low-temperature condensate water pump; a cold side inlet of the air-water heat exchanger is communicated with atmosphere, and a cold side outlet of the air-water heat exchanger is connected with an air inlet of the hot air interlayer; an inlet of the cold air interlayer communicates with the atmosphere. The system is low in steam consumption, capable of achieving continuous production and environmentally friendly.

This invention relates to the field of catalyst preparation technology, and more specifically, to the preparation and application of a metal catalyst for the production of the rubber antioxidant 6PPD. Copper nitrate and zinc nitrate compounds are dissolved in deionized water, and silicate esters are added and mixed in a water bath. The pH is adjusted, the mixture is aged, filtered, and washed with water to obtain the catalyst precursor. Copper halide is added and stirred until homogeneous, then dried in an oven, ground, and calcined to obtain the metal catalyst for the production of the rubber antioxidant 6PPD. This invention's metal catalyst maintains high activity and selectivity while also being low in cost, exhibiting excellent stability and environmental friendliness. The preparation process is simple, reproducible, and suitable for large-scale production, providing a novel catalytic solution with high industrial application value for the efficient and green synthesis of p-phenylenediamine antioxidants.

The utility model provides a coarse methanol five-tower multi-effect rectification device which comprises a pre-rectification tower, a negative pressure rectification tower, a normal pressure rectification tower, a low pressure rectification tower and a high pressure rectification tower, a first pre-tower reboiler and a second pre-tower reboiler are arranged on the lower portion of the pre-rectification tower, and a first negative pressure tower reboiler and a second negative pressure tower reboiler are arranged on the lower portion of the negative pressure rectification tower. An atmospheric tower reboiler, a low-pressure tower reboiler and a high-pressure tower reboiler are respectively arranged at the lower parts of the atmospheric rectifying tower, the low-pressure rectifying tower and the high-pressure rectifying tower; heat at the top of the pre-rectifying tower is used for supplying heat to a first negative-pressure tower reboiler, heat at the top of the normal-pressure rectifying tower is used for supplying heat to a second negative-pressure tower reboiler, and heat at the top of the low-pressure rectifying tower is used for supplying heat to a normal-pressure tower reboiler and a second pre-tower reboiler; according to the invention, the steam unit consumption can be reduced to 0.52-0.54 t of steam per ton of refined methanol, and the highest steam unit consumption is 0.54 t of steam per ton of refined methanol, so that the steam unit consumption is reduced.

The invention discloses a control method of a calcium-based desulfurization system for coke charging dedusting flue gas of a dry quenching furnace, and belongs to the technical field of coking flue gas purification. The method comprises the following steps: monitoring the flue gas sulfur dioxide concentration in real time, and starting a calcium spraying system in an interlocking manner when a threshold value is reached; by controlling the calcium spraying time, the arrival time (T2) of the desulfurizing agent is smaller than or equal to the flowing time (T1) of the flue gas from the monitoring point to the spraying point, so that accurate and synchronous mixing is realized; according to the real-time flue gas flow and SO2 concentration, the calcium spraying amount is dynamically controlled in an interlocking mode, and the calcium-sulfur ratio is maintained to be 1.8-2.4; intelligent ash removal control based on single-bin or total pressure difference triggering is adopted for the bag type dust collector, and ash removal is executed by staggering coke charging operation time periods of the dry quenching furnace according to set intervals. According to the invention, through cooperative intelligent control of time sequence, dosage and ash removal, the problems of desulfurization agent waste, excessive emission and unstable system operation under the intermittent fluctuation flue gas working condition of dry quenching are solved, and efficient desulfurization, resource saving and reliable system operation are realized.

The application provides a smelting method of molten steel with scrap steel in a separate ladle, which breaks through the limitation of the scrap steel adding amount in the traditional process through the operation of adding scrap steel in multiple batches in a main refining furnace and adding scrap steel in the main refining furnace and an auxiliary refining furnace after the separate ladle operation. The multiple batch operation of the main refining furnace and the arrangement of at least two furnace bodies provide more opportunities and space for the scrap steel adding; the separate ladle operation further increases the number of molten steel ladles, greatly increases the total amount of scrap steel, effectively improves the scrap steel utilization rate, and reduces the molten iron consumption.

The application discloses a chemical precipitation method using magnesium oxide and a metal hydroxide product, and the chemical precipitation method comprises the following steps: S1, obtaining a pre-reaction solution capable of being used for a precipitation reaction, and obtaining a pulp solution containing ions of a target metal in the pre-reaction solution; S2, mixing magnesium oxide powder and the pulp solution, and obtaining a first slurry through a pulp treatment; and S3, putting the first slurry into a reactor to perform a precipitation reaction, and generating a precipitated slurry containing a metal hydroxide of the target metal. In the magnesium oxide powder, a first part of the magnesium oxide powder has a higher average activity than that of the whole magnesium oxide powder. The method is used to solve the problem of serious activity attenuation of the magnesium oxide slurry, improve the precipitation efficiency of the target metal in the precipitation reaction, increase the content of the target metal in the metal hydroxide product, and reduce the single consumption of the magnesium oxide and the content of magnesium impurities in the product.

The utility model belongs to the technical field of sorting procedure, especially relates to a sorting procedure green environmental protection water balance system, including the pit water storage area, the ore dressing operation main factory building, the roller grinding operation area, the high -placed water pool, the floating boat pump station, the concentration tank, the ring water pump house, the buffer pool, the floating boat pump station is located in the pit water storage area, the floating boat pump station connects the high -placed water pool, the high -placed water pool connects the ore dressing operation main factory building, the roller grinding operation area and the ring water pump house, the ring water pump house and the concentration tank are provided with near the ore dressing operation main factory building, the drainage of ore dressing operation main factory building passes through the tailing way and leads to the concentration tank, the concentration tank connects the ring water pump house, the ring water pump house connects the water inlet of ore dressing operation main factory building, the buffer pool is provided near the ring water pump house, the buffer pool connects the pit water storage area, the automatic liquid level device is equipped in the buffer pool, the roller grinding operation area connects the ore dressing operation main factory building. The utility model will effectively control production wastewater storage water level, effectively reduce enterprise new water unit consumption, effectively control production water and so on and discharge.

The invention discloses a preparation method of 3 ', 4', 5 '-trifluoro-2-aminobiphenyl. A reactant I and a reactant II are used, a black phosphorus-palladium-carbon nitride ternary composite catalyst BPQDs-Pd-C3N4 is used as a bifunctional catalyst for coupling and hydrogenation, and an alcohol-water system is used as a common solvent; the preparation method comprises the following steps: adding a black phosphorus-palladium-carbon nitride ternary composite catalyst BPQDs-Pd-C3N4 into a reaction kettle, carrying out coupling in the same reaction kettle, switching to introduce H2 for hydrogenation, filtering and recovering the catalyst after the reaction is finished, concentrating the filtrate, and crystallizing to obtain 3 ', 4', 5 '-trifluoro-2-aminobiphenyl, and realizing the one-pot preparation of 3', 4 ', 5'-trifluoro-2-aminobiphenyl by adopting the prepared black phosphorus-palladium-carbon nitride ternary composite catalyst BPQDs-Pd-C3N4. Suzuki coupling and nitro hydrogenation are sequentially completed in the same reaction kettle, an intermediate does not need to be separated, the operation steps are simplified from two-pot two-filtration and solvent replacement to one-pot one-filtration, and the unit consumption of a solvent and the dosage of a catalyst are reduced by more than half.

The invention discloses a preparation method and application of cobalt hydroxide based on seed crystal circulation and special active magnesium oxide. Through cooperation of a seed crystal circulation technology and a special auxiliary agent, the generated cobalt hydroxide is converted into a core of subsequent crystal growth, uniform and thick growth of the cobalt hydroxide is guided, and the industry bottleneck that the underflow concentration of a thickener is low when high-activity magnesium oxide is adopted for cobalt precipitation is effectively solved. The average particle size (D50) of the product is increased from 16.81 [mu] m to 21.81 [mu] m or above, the underflow concentration is increased from 27% to 28-30%, and the sedimentation and compaction performance of ore pulp is remarkably improved. While excellent physical properties are obtained, the chemical quality of the product is excellent, the cobalt content reaches 40% or above, and the magnesium residue is lower than 5%. The process economy is outstanding, the cobalt precipitation rate is increased to 98% or above, and the unit consumption of magnesium oxide is reduced to 0.70-0.71 t / t Co. According to the method, the seed crystal derives from the process, parameter regulation and control are flexible, compatibility with an existing production line is good, and large-scale industrial application prospects are achieved.

The invention relates to the technical field of solar cells, and provides a cell electrode printing method, a back contact cell and a photovoltaic module. The method comprises the steps that a screen printing plate is not changed, an N-type auxiliary grid and a P-type auxiliary grid are firstly printed, a main grid is finally printed, main grid printing is a sequence of overlapping and printing the main grid in three working procedures, and a composite electrode structure is formed on the back face of the battery. According to the invention, the step effect of the auxiliary grid printing can be eliminated and the forming uniformity of the main grid can be optimized through the matching of the printing sequence of the first auxiliary grid and the multi-channel main grid, so that the line width of the auxiliary grid is effectively reduced, the height-width ratio is improved by about 3-5%, the unit consumption of silver paste is saved by about 5-10% under the condition that the design line width of the screen printing plate is not changed, and meanwhile, a foundation is laid for 1-3 mu m lower detection of the design line width of the screen printing plate; and the series resistance and electrode shading loss can be effectively reduced.

The invention discloses a method and device for preparing aniline through catalytic hydrogenation of nitrobenzene, a jet loop reactor is adopted as core equipment to complete nitrobenzene hydrogenation reaction, and the device comprises a pressure control valve, the jet loop reactor, a flow regulating valve, a circulating pump and a steam generator which are connected according to a certain mode. The process method provided by the invention can realize efficient nitrobenzene catalytic hydrogenation, has the advantages of high mass transfer efficiency, high heat utilization rate and low catalyst unit consumption, and is suitable for being used as a technical route for aniline preparation.

The utility model relates to sewage treatment technical field provides a kind of high density sand adding equipment of sand precipitation tank, including discharge pipe, bunker and fan, the top of discharge pipe is provided with bunker, the bottom of bunker is provided with spiral machine, the rear end of discharge pipe is provided with fan, the front end of discharge pipe is respectively provided with A pipeline and B pipeline, the utility model directly adds microsand into precipitation tank by pipeline, cancels manual handling microsand step, reduces microsand leakage risk from source;Meanwhile, the whole closed sand blowing avoids dust generation, reduces the harm of dust to employee respiratory system, significantly improves the sanitary condition of pool surface, equipment and surrounding environment, creates safe and healthy working environment for employee. Through full-automatic control realizes unattended operation, only needs artificial periodic replenishment bunker microsand, substantially shortens manual handling distance and operation time. Reduce the physical labor of operation and maintenance personnel, so that they can engage in other work, significantly reduce labor cost.

The utility model discloses a multi-flow-path saline water double-alkali concentration online detection device which comprises a crude saline water sampling pipeline, a refined saline water sampling pipeline, a pure water pipeline and a double-alkali online analyzer, a micro HVM membrane filter is mounted on the crude brine sampling pipeline; the number of the sampling pipelines is one or more; a liquid outlet of each sampling pipeline is connected with a sample overflow pool; the double-alkali online analyzer comprises a sample injection pipeline, a cleaning pipeline and a waste liquid pipeline; the cleaning pipeline is connected with a pure water pipeline; the plurality of sample injection pipelines are respectively connected with the sample overflow pools; the waste liquid pipeline is connected with the salty mud tank. According to the utility model, on-line detection and detection route switching of the component content of the crude brine in the reaction tank in the primary brine process in the chemical chlor-alkali industry are realized, manual sampling analysis is replaced, the analysis efficiency of an inspection system is greatly improved, the labor cost is saved, and the process control is adjusted in time through display of on-line detection data, so that the production efficiency is improved. The unit consumption of sodium carbonate and caustic soda is reduced.

This invention discloses an SCR ammonia injection control method and system. First, a PLS regression is constructed by collecting signals such as inlet / outlet NOx, flue gas volume, temperature, oxygen content, and ammonia flow rate. The regression coefficients are then used as state variables and updated online adaptively by Kalman filtering. Next, the ammonia injection quantity is calculated using SCR stoichiometry as feedforward, and model-based feedback correction and inlet NOx slope disturbance feedforward are introduced. Combined with operating condition fluctuation detection, valve smoothing, and amplitude limiting, ammonia injection valve commands are generated, achieving stable control of outlet NOx near a narrow-band setpoint, reducing ammonia consumption and valve adjustment frequency.

The utility model discloses waste heat recovery energy-saving equipment of a device for preparing ethylene glycol through hydrolysis, which belongs to the technical field of chemical production and comprises a circulating liquid cooler and an ethylene glycol refining tower top cooler, and an ethylene glycol refining tower is arranged on one side of the ethylene glycol refining tower top cooler. A discharge port of the reactor is connected with a feed port of the reaction circulating liquid pump through a pipeline, a flow meter d, a flow control valve d and a waste heat recovery supercharger are arranged on the bypass pipeline, the bypass pipeline is connected with the waste heat recovery supercharger, and a flow meter e and a flow control valve e are arranged on the bypass pipeline. After being pressurized, process steam generated by the circulating liquid cooler and the ethylene glycol refining tower top cooler meets the requirement of 0.6 Mpa grade steam which can be used by a hydrolysis ethylene glycol preparation device, so that the problem of waste is avoided, meanwhile, the circulating water consumption of the device can be reduced, the steam unit consumption and the circulating water unit consumption in the operation of the device are reduced, and the energy consumption of the device is reduced. And economic income is increased for the device, so that the device is in efficient and energy-saving operation for a long time.

A process and a system for cleaning acetylene and sulfuric acid relate to the technical field of acetylene cleaning processes, and the system comprises an acetylene pretreatment device, an acetylene water removal device, an acetylene impurity removal device, an acid mist trapping device, a sulfuric acid circulating device, a sulfuric acid storage device, an acetylene cooler of the acetylene pretreatment device and an acetylene demister, the acetylene demister is communicated with a sulfuric acid washing tower of an acetylene water removal device, the sulfuric acid washing tower is connected with a bubble cap combination tower of an acetylene impurity removal device, the bubble cap combination tower is connected with an acid mist trapping device, and the acid mist trapping device is an acid mist trap; the sulfuric acid circulating device comprises a sulfuric acid washing tower circulating device and a bubble cap combined tower circulating device. According to the invention, the problem of sewage discharge is solved; waste acid can be recycled and mixed with limestone powder to serve as a cement raw material, sulfur and phosphorus in acetylene gas are removed more thoroughly, and meanwhile, the water mass fraction of acetylene gas is reduced, so that the service time of a synthetic converter catalyst is prolonged, the unit consumption of the catalyst is reduced, and the safety coefficient is improved.

The utility model relates to the technology of chemical production equipment, and discloses a crushing system capable of reducing unit consumption, which comprises a dust hood, a crusher and a dust remover, the crusher is arranged in the dust hood, the crusher comprises a primary jaw crusher and a secondary jaw crusher, a conveying belt is arranged below the primary jaw crusher, an iron remover is arranged above the conveying belt, and the dust remover is arranged above the iron remover. A second-stage jaw crusher is connected below the conveying belt, a discharging port of the second-stage jaw crusher is connected with a bucket elevator, an upper discharging port of the bucket elevator is connected with a calcium carbide bin, a vibrating filter sieve is arranged at a discharging port of the calcium carbide bin, a dust outlet is formed in the top of the dust removal cover and connected with a dust remover through a dust removal pipe, and the dust removal pipe is connected with a discharging port of the dust removal cover. The two-stage jaw crusher is arranged to prevent large-particle calcium carbide from causing blockage of conveying equipment, the dust hood is additionally arranged, dust is conveyed back to the bucket elevator through the spiral conveyor, and unit consumption is effectively reduced.

This invention discloses a 5G-based remote data monitoring and parameter control system and method for explosive loading equipment. The system includes: a field perception layer, a data transmission layer, a remote control layer, and an execution control layer. The field perception layer includes flow sensors, pressure sensors, temperature sensors, position sensors, speed sensors, a Beidou positioning module, and a camera installed on the explosive loading equipment. These sensors are used to collect data on latex matrix flow rate, sensitizer flow rate, delivery pressure, matrix temperature, hydraulic oil temperature, explosive loading height, delivery pump speed, equipment location, and on-site environmental imagery. This invention achieves remote real-time monitoring and parameter control through 5G communication technology, integrating high-precision data acquisition, rapid data transmission, intelligent data analysis, and precise execution control. It solves many shortcomings of traditional explosive loading equipment, improves explosive loading efficiency, blasting effect, and intrinsic safety level, and provides strong technical support for the construction of smart open-pit mines.