1General Provisions:

1.1This technical solution proposes requirements for the functionality, design, structure, performance, and other aspects of electrostatic dust removal.

1.2The equipment structure and main components must consider the possibility of manufacturing, transportation, and on-site construction.

1.3Seriously implement the national policies and guidelines on environmental protection, strictly abide by relevant national laws, regulations, norms, and standards. Selecting advanced and reliable dust removal technology and processes, while ensuring high dust removal efficiency, emphasizing the safety and stability performance of the system, and minimizing system operating costs to the greatest extent possible.

2Engineeringgeneralization:

Main technical parameters of dust removal equipment;

Characteristics of sintering flue gas ：

①High smoke volume and temperature Fine dust.

②High specific resistance, easy to generate back corona;

③Imported dust content is high, which can easily cause corona sealing;

④The viscosity of dust is high, which can easily cause the electrode plates and wires to stick to dust.

Therefore, in addition to the general requirements of conventional power station electrostatic precipitators, electrostatic precipitators used under such working conditions should also prevent the occurrence of back corona and corona sealing phenomena. How to reduce and prevent dust adhesion on anode plates and cathode wires, and improve the lifespan and reliability of components. Improving the polar matching type is the key technology to ensure the design dust removal efficiency and safe and reliable operation.

3、 Technical measures:

（1）Adopting a wide polar distance:

Widening the electrode distance, increasing the operating voltage, and enlarging the corona zone are beneficial for dust charging. The electric field strength near the dust collection plate is significantly increased, which improves the driving speed of dust; The current density of the dust collection plate tends to be uniform, delaying and reducing the occurrence of back corona; The increase in operating voltage, enhanced wind power, and increased electrostatic agglomeration of dust have all improved the dust collection efficiency of the electrostatic precipitator to varying degrees.

（2）Using auxiliary electrodes:

Transforming the conventional "single zone" electrostatic precipitator into a "dual zone" electrostatic precipitator with "charging" and "dust collection" inserted and connected in series, it can adopt reasonable matching according to different smoke and dust properties, and strengthen the "charging" and "dust collection" processes separately. Greatly improving the adaptability of electrostatic precipitators to dust specific resistance, effectively preventing secondary dust and improving dust collection efficiency.

（3）Using horizontal groove plates:

At the last electric field outlet of the electrostatic precipitator, two rows of staggered transverse slot plates are arranged perpendicular to the direction of the flue gas. When the smoke passes through the slot plates, the charged dust is driven closer to the slot plates by the electric field force and inertia force, and adheres to the slot plates by electrostatic force. It not only has the function of collecting secondary dust, but also improves the uniformity of the electric field airflow.

（4）Reliable insulation structure minimizes the temperature drop of flue gas inside the electrostatic precipitator to ensure that the flue gas temperature is higher than the dew point temperature.

（5）Strictly control the air leakage rate of the shell. Because the "leaking" cold air can lower the temperature in certain areas, causing local condensation and sticking dust, and also affecting the lifespan of the equipment.

（6）Adopting double-layer manhole doors with good sealing measures, it solves the problem of air leakage caused by poor sealing of manhole doors.

（7）Measures to ensure safe and reliable operation:

The most common accidents in the actual operation of electrostatic precipitators are four types: cathode wire breakage or disconnection, hammer detachment, insulator breakage, and ash hopper blockage. If the occurrence of the "four major accidents" mentioned above can be effectively prevented, the reliability of the operation of the electrostatic precipitator will be greatly improved.

AWe have adopted a new type of tubular barbed wire that ensures continuous and disconnected cathode wires. useRSThorn thread with high strength,Good rigidity,Ensure that there will be no disconnection during operation.

BThe vibration motor is placed outside the dust collector for easy maintenance and low failure rate.

DTo prevent the occurrence of creeping electrical breakdown caused by insulator dust deposition, cathodic vibration and anode suspension insulators are exposed to an electric field to prevent sticky dust from easily adhering to the surface of the insulator and causing creeping electrical breakdown. Therefore, we have installed electric heating in both the cathodic vibration and cathodic suspension insulator chambers to prevent dust adhesion and ensure the safe and reliable operation of the electrostatic precipitator.

（8）Design scheme basis:

★ On site inspection (based on our company's experience in designing and manufacturing dust collectors)

1.1 Comprehensive Emission Standards for Air Pollutants（GB26197-1996）

1.2 Several Decisions on National Environmental Issues

1.3 Environmental Air Quality Standards（GB3095-1996）

1.4 Emission Standards for Air Pollutants from BoilersGB13271-1996

1.5 Emission Standards for Air Pollutants from Industrial FurnacesGB9078-1996

1.6 Environmental Air Quality Standards（GB3095-1996)

1.7 General Technical Conditions for Dust Collectors（JB/EQ4000.10)

1.8 Code for Design of Steel Structures（GBJ17-88)

1.9 Guidelines for operation and maintenance of electrostatic precipitators in coal-fired power plantsDL/T 461-2004

2.0 Performance testing method for electrostatic precipitatorsGB/T 13931-2002

4、 Technical measures:

1.Design indicators:

（1）Equipment name: Electrostatic precipitator;

（2）Type: dry, horizontal; Dual zone four electric field

（3）Inlet flue gas volume of dust collector540000 m3/h；

（4）Inlet flue gas temperature of dust collector120℃；

（5）Dust concentration at the inlet of the dust collector1500mg；

（6）Emission concentration50mg

（7）Annual operating hours ≥7000 Hour;

（8）Number of imports and exports of electrostatic precipitators: imports2 One, exit2 One;

（9）The pressure drop at the inlet and outlet of the dust collector is less than500 pa；

（10）Dust collector body air leakage rate ＜3 %；

（11）The strength of the dust collector casing is ensured to be under negative pressure Time does not deform;

（12）The smoke adopts a horizontal inlet and outlet method;

（13）Distance from the dust collector casing1.5mLocation, noise ≤80dB.

2Equipment specifications and selection

（1）Model and quantity of electrostatic precipitator

Selection:WD-250-4High voltage electrostatic four electric field dust collector,

（2）Flow rate of flue gas in power plant:0.6m/S；

（3）Effective width, height, and length of electrostatic precipitator(20500×19600×16500）

（4）Same pole spacing500mm；

(5)Number of channels for electrostatic precipitator:40One;

（6）Number of inlet and outlet flanges for dust collector: one each;

（7）Anode plate form:480CType Material:SPCCProduced by Baosteel in Shanghai, with a plate thickness not less than1.5mm；

（8）Cathode wire form: adoptedRSMaterial of Thorn Thread:SPCCProduced by Baosteel in Shanghai,.

（9）Anode vibration method: Top electromagnetic vibration;

（10）Cathodic vibration method: Top electromagnetic vibration;

（11）Heating form of ash hopper: steam heating (both inlet and outlet contain high-temperature resistant valves, pressure>1.0 Mpa,warm

Degree>300℃）；

(12)Ash hopper capacity: guaranteed at rated load8 Less than gray hours; Quantity of ash hoppers:8One.

（13）Electrical part: The high-voltage controller has remote communication function and reserved communication interface;

5、 Supply List: