High-Performance Environmental Protection Equipment for Acid Mist and Cyanide Treatment in the Electroplating Industry

Equipment Description:

I. Workflow

Exhaust Gas Collection: Exhaust gas sources (such as electroplating tanks and pickling tanks) are captured using a locally enclosed gas collection hood or an external suction hood.
Pretreatment: Dry filters intercept large particulate matter and oil mist to protect downstream equipment.
Multi-stage Purification: Acidic exhaust gas enters a spray tower for neutralization and treatment;
Organic waste gas/cyanide is degraded through activated carbon adsorption.
Emission Compliance: Purified gas is tested and found to comply with the "Comprehensive Emission Standard for Air Pollutants" (GB16297-1996) and is discharged through a chimney.

II. Technical Parameters

III. Application Scenarios

‌Electroplating Industry‌: Treatment of acid mist and cyanide from processes such as pickling and chrome plating.
‌Electronics/Semiconductor Manufacturing‌: Purification of hydrofluoric acid mist and organic solvent exhaust from etching and cleaning.
‌Chemical/Pharmaceutical Industry‌: Treatment of VOCs and acidic and alkaline gases emitted from reactors and storage tanks.

‌IV. Equipment Advantages

‌1. High-Efficiency Purification: Multi-stage treatment units connected in series adapt to complex exhaust gas compositions, achieving an overall purification rate of ≥90%.
‌2. Corrosion-Resistant Design: Fiberglass, stainless steel, and Teflon coating withstand highly corrosive media such as hydrofluoric acid and concentrated sulfuric acid.
‌3. Low-Energy Operation: The circulating water system reduces chemical consumption, and automated control reduces manual intervention costs.
‌4. Modular Expansion: Flexible configuration of spray towers, adsorption towers, and other units is supported to meet diverse operating requirements.

V. Key Operation and Maintenance Points

1. Daily Maintenance: Monitor the pH value of the spray liquid (recommended 8-10) and regularly replenish NaOH solution;
Clean the filter and check for nozzle blockage monthly; and replace the activated carbon and packing layer every six months.
2. Troubleshooting: Abnormal fan vibration: Check for impeller corrosion or dust accumulation, and replace the balancing weight promptly.
Decreased purification efficiency: Check the spray liquid concentration, activated carbon saturation, or packing blockage.

Main structures and components

I. Core Components

1. Impeller
Function: The core compression component, responsible for gas compression and transport, is made of corrosion-resistant metal (such as stainless steel, copper) or coated materials. The blade shape directly affects airflow and efficiency.
Design: Available in forward-curved, backward-inclined, arc-shaped, and linear types. Static and dynamic balancing are required to ensure smooth operation.
2. Motor
An AC asynchronous motor or DC motor, with power customized based on the airflow (1.5-75kW), drives the impeller.
3. Air Inlet/Outlet
Air Inlet: Equipped with a filter (expanded mesh stainless steel or aluminum) to intercept large particles (such as metal dust and liquid droplets) and reduce equipment wear.
Air Outlet: Optimize airflow guidance design to reduce exhaust resistance and ensure compliance with environmental standards.
4. Fan Case
The outer casing is made of welded steel plates or fiberglass reinforced plastic (FRP), integrating the impeller and deflector. It must be highly leak-tight and corrosion-resistant. 5. Bearings and Drive Unit
Bearings: Support the rotation of the impeller and are typically made of rolling bearings or corrosion-resistant sliding bearings.
Drive Unit: Includes the main shaft, couplings, pulleys, etc. Lubricant (such as L-AN32) is used to ensure smooth operation.

II. Auxiliary Structures
1. Air Guide
Directs airflow evenly into the impeller, improving airflow utilization. The material must be corrosion-resistant (such as stainless steel coating).
2. Bracket
Supports the overall fan structure and must possess high strength and vibration resistance to prevent imbalance during operation.
3. Circulation System
When used in conjunction with a spray tower or activated carbon adsorption tower, an acid- and alkali-resistant circulation pump and piping are required to achieve multi-stage exhaust gas purification.

III. Differentiated Design and Materials
1. Corrosion-Resistant Material Selection
For strong acid (such as hydrochloric acid and sulfuric acid) and strong alkaline exhaust gases, 316L stainless steel, fiberglass reinforced plastic (FRP), or Teflon coating are preferred.
For high-temperature exhaust gases (≤200°C), high-temperature alloy materials are required. 2. Layout Compatibility
Horizontal Fans: Suitable for high-volume applications (>50,000 m³/h), such as centralized exhaust systems. Vertical Fans: Compact design, suitable for combined systems (such as those located after a spray tower).

IV. Typical Applications and Operation and Maintenance
1. Application Scenarios
Acidic Waste Gas: Combined with an alkaline spray tower for neutralization treatment, achieving a purification efficiency of ≥90%. Organic Waste Gas: Combined with activated carbon adsorption or photocatalytic oxidation equipment to improve VOC removal rates.
2. Operation and Maintenance Key Points
Regular Cleaning: Check for impeller fouling and filter clogs every 1-3 months.
Explosion-Proof Design: When handling flammable gases, an explosion-proof motor and emergency discharge valve are required.

Features:

1.High cost performance: Based on the customer's product positioning and development strategy, and with economic affordability as the foundation, we achieve the best cost performance.
2.The advanced and meticulous design concept of the equipment, along with the highly automated industrial equipment, showcases the image of a modern and advanced enterprise.
3. It has high adaptability, meeting the current production requirements and reserving room for development, taking into account the needs of increased production and improved quality in the future.
4.Quality compliance strictly adheres to the ISO900 quality management system, with every minute detail of the entire equipment installation being strictly controlled.

Domestic large-scale coating equipment, intelligent equipment, and environmental protection equipment production enterprises-Zhejiang Huier Coating Environmental Protection Equipment Co., Ltd has 37 years of experience industry team in the powder coating equipment,intelligent equipment and environmental protection equipment.It is the national high and new tech enterprise,Specialized, refined, and innovative small and medium-sized enterprises， scientific and technological SMES 27years specialized R&D, design, manufacture, installation, commissioning ,maintenance of varies coating equipment, automatic equipment, intelligent control system, waste water,waste gas environmental protection equipment and treatment engineering.The company is located in Wukang Street, Deqing County, covers an area of 30,000 square meters, workshop of more than 20,000 square meters, more than 200 employees. The company has passed ISO9001 international system certification, ISO14001 environmental management system certification and ISO45001:2018 Occupational health and safety management system certification, and obtained more than 40 national patents.

The company actively and constantly introduce excellent talents, focus on the development of coating equipment and environmental protection equipment of new technology, new process and new products every year.It is the mission of all staff to continuously develop and grow, meet the needs of customers and create value for customers.

The products are used in all kinds of metal surface, plastic, aerospace, auto parts, mechanical equipment, furniture and other surface treatment.It will meet the customer needs, because it adopts automatic production to anti-corrosion and powder coating the user's products,coating solid bright.

In aerospace, household appliances, light industry, furniture, machine tools, construction, motorcycles, automobiles, communications, aluminum, electric power, agricultural machinery and transportation and other industries by the user's praise. The company continue to innovate, research and development of new products, design and manufacture safety, energy saving, environmental protection, intelligent features of fire-proof safe, powder coating environmental protection equipment and intelligent equipment engineering projects.

The company not only meet the needs of domestic customers, but also in Southeast Asia, the Middle East, Europe, North America, South America and other 27 countries occupied the market has won the favor of customers! The company always dedicated to our customers with the overall intelligent coating environmental protection system solutions and system services.