The wet electrostatic precipitator (WESP) overcomes the shortcomings of traditional precipitators, such as dust re-entrainment and back corona. It can effectively remove high-specific-resistivity dust, with a good removal effect on PM2.5. is proposed to adopt chemical agglomeration humidification technology in precipitators achieve ultra-low emissions from coal-fired power plants. results show that addition agglomerates, surfactants, water vapor all affect diameter After adding sesbania gum...

An electro-Fe2+-activated peracetic acid (EC/Fe2+/PAA) process was established for organic dye removal in water. The operation factors such as the PAA dosage, Fe2+ amount, current density, and pH were investigated on methylene blue (MB) synergistic EC/Fe2+/PAA system. Efficient MB decolorization (98.97% 0.06992 min−1) achieved within 30 min under 5.4 mmol L−1 PAA, μmol Fe2+, 15 mA cm−2 intensity, 2.9. Masking tests affirmed that dominating radicals hydroxyl (OH), (CH3CO2·, CH3CO3·), singlet...

Two-dimensional hierarchically porous anatase TiO₂is fabricated through acetic acid etching. It exhibit high electrochemical stability and reversible capacity in lithium ion battery.

Multi-step bending is the key manufacturing technology of large-diameter straight seam submerged arc weld (LSAW) pipes JCO. The aim this search to predict precise final geometry pipe after forming because considerable elastic recovery during unloading leading springback affects precision in dimension. In study JCO process for X-80 with wall thickness 22 mm and diameter 1219 has been modeled numerically using finite element analysis method based on basic theory bending. particular, finds...

A wet electrostatic precipitator (WESP) has much higher capture rate for fine particulate matter, PM2.5, than a traditional dry type does. In order to make full use of existing dust removal equipment and reduce the emissions smoke zero, combination chemical coagulation humidification is proposed using WESP. The results show that addition coagulant can promote coal-fired particles. After pectin (PG), median diameter particles increases from 28.19 μm 45.28 μm. Water vapor When water injection...

Wet electrostatic precipitators (WESPs) are increasingly used in iron and steel plants coal-fired power due to their higher efficiency at capturing fine particles than conventional dry-type precipitators. In order achieve ultra-pure purification of dust plant gas, we propose an improved method that involves adding a chemical coagulant surfactant WESP. The effects the type concentration on agglomeration effect removal blast furnace were investigated. results show addition could promote...

Gas explosion is one of the most serious problems in operation electrostatic precipitation (ESP) which applied to purify producer gas. Simulation study on gas ESP has been conducted with computational fluid dynamic method. Producer was studied experimentally a closed rectangular vessel validate simulation results. Numerical results were proved be reliable and reasonable could meet engineering needs. The factors flame propagation pressure variation have also analyzed. Furthermore, effects...

In order to separate droplets from the steam, a new type steam separator with high efficiency in power plant is presented. An experimental model established for determining structure parameters and critical velocity of separator. Fibreglass filtering method used measuring separation The results show that collecting hooks higher than without it. plate length has almost no effect on efficiency. turning angle at 54°, spacing 20 mm 5 m/s improve water film adhering wall will break when gas more...

The wet electrostatic precipitator (WESP) is crucial for the ultra-purification of blast furnace gas in gas-fired generator units. To address issues like high water consumption, poor atomization leading to spark discharge, and uneven mist distribution, a testing system using laser particle-size analyzer was established. Eight spray nozzles were tested identify optimal performance operating parameters. effect chemical agglomeration agents on nozzle particle capture efficiency also examined....

The problem of clearance contact between the bearing plate and supporting guide rail is studied when heavy‐duty Apron Feeder subjected to impact load. Based on energy method, force falling ore was calculated, nonlinear finite element analysis structure with performed using ANSYS Workbench. results show that at first moment contact, initial shape an approximately linear then a deformation occurs near line, which quickly evolves from surface contact. stress distribution diffused outward along...

The separation efficiency and resistance loss of curved plate affected by blade spacing, velocity average particle size are experimentally investigated. Meanwhile, a new measuring device is used to detect the moisture content. results show that dehydration gradually decrease with spacing increasing. Resistance increases within critical as gas enhances. Dehydration atomizing size, but isn't significantly changed, herewith providing some referential material for design production such plate.

Based on CFD software and two-phase theory, lag range model was adopted to calculate gas flow in the wet electrostatic precipitator. Dispersed phase also used simulate mist The results show that gets homogeneous by changing distribution plate's parameter. droplet's diameter has great influence flow's distribution. It is good for when 50 µm.

The mechanism of homogeneous charge compression ignition (HCCI) combustion is introduced. Based on single zone model HCCI under early injection, coupled with fuel oxidation reaction dynamical model, the mathematics in cylinder built and simulated, then engine's working characteristics combusted biodiesel diesel oil compared original, it shows that calculation matched trial results well. And through analyzing performance different mixture ratio oil, two-stage heat release appeared combustion,...

A new method on measuring moisture content in gas with high accuracy is presented. Fibreglass filled a filter tube fixed the sampling pipe. Mist of will be intercepted by fibreglass when flows through fibreglass. Moisture can calculated condition that volume flowing pipe at unit time measured. Collected efficiency increases filling ratio, thickness and single fibre collected while decreases diameter. should more than 99% if suitable diameter selected. The cooling exsiccator must 20 minutes....

In order to measure aerosol in gas of electronic and accurate manufacturing industry, a new method on measuring dust content with high precision by using superfine purity fiberglass is presented. As Fiberglass has the advantage small diameter porosity, will be intercepted completely when flows through sampling tube filled fiberglass. Dust can calculated condition that volume flowing pipe at unit time measured. Collected efficiency increases filling thickness, ratio single fiber collected...

Based on computational fluid dynamics method of two-phase flow, separation efficiency steam separator used for steam-water separating in power plant is presented. A mathematical model established simulating the flow field gas channels separator. The trajectory droplets obtained by using particle motion equation. gas-water calculated at different diameter. equations are solved method. An experimental determining structure parameters and critical velocity results show that inlet have great...

Abstract Wet electrostatic precipitator (ESP) has been paid more and attention because of its good collection effect on fine particles in coal-fired power plants. Spraying system is an important part the wet ESP atomization characteristics influence efficiency. The performance solid hollow nozzles was tested under varying pressure. dust efficiency affected by parameters corona discharge were studied. Dust removal experiments carried out using fly ash from Results show that best working water...

The present study evaluated the nutritional values and in vitro fermentation characteristics of 29 different Chinese herbs order to develop effective feed additives for livestock nutrition. were analyzed their chemical composition. using gas production technique with swine cecal chyme inoculum. results showed that Allium tuberosum Rottl (Semen allii tuberosi, SAT) had highest gross energy (GE), crude protein (CP), ether extract (EE), total amino acid (TAA) contents, whereas Anemones...

Abstract The fine particle dust produced by coal-fired power plants is one of the important sources air pollutants. Wet electrostatic precipitator (WESP) effective methods to remove dust. However, traditional wet still has low collection efficiency for superfine To improve and chemical coagulation method applied precipitator. Experiments are carried out varying agent type, concentration, surfactant species. results show that: Adding coagulants can promote effect particles, Xanthan gum (XTG)...

Due to the turbulent mixing between agglomeration agent and dust, number of collisions per unit time particles droplets increases with particle size in process chemical agglomeration, efficiency accordingly. Turbulent can promote effect subsequent by strengthening collision agglomerant droplets. The author used cooperate order improve dust removal. from removal efficiency, which greatly electric technologyTurbulent is most intense at inlet box position, best. synergistic has an on...

It is necessary to measure the dust content with high precision for blast furnace gas when it reused by a combined cycle power plant. can improve measurement accuracy effectively investigate on results affected different factors. The fiber diameter, particle diameter and sampling time which has influence result of was studied, show that superfine glass collection efficiency, successfully collect particles less 10 μm. best 5 minutes. Through calculation standard deviation value membrane...

In order to improve collecting efficiency of wet electsostatic precipitation a new polar matching system is presented. Based on Gauss Theorem and image charge method the mathematical model established for calculating electric field intensity distribution system. The results show that gets homogeneous at plate when space suitable value. meets well arbitrary section. structural characteristics affected by many factors, such as: geometrical parameters, dust concentration applied voltage. has...

The V-I characteristic is a basic method to analyze the discharge performance and operation state of electrostatic precipitator. deep investigation characteristics can be made improve collection efficiency, by which theory basis will provided for controlling fine particles. influence different gas velocity, droplet diameter amount spraying water has been studied in this paper. results show that precipitator work its optimal under condition velocity 1.0~1.2 m/s, nozzle pressure 0.3~0.4 MPa...