Basic Info.
Product Description
Degreasing, Rinsing, Pickling, catalyst process and fully enclosed acid-proof room
For example: Technical Process of Galvanizing
The pretreatment tanks are made of treatment grooves are made of high strength steel frames and are embedded in PP boards. PP,. Due to the very high strength of the steel frame and the thick PP plate, these pretreat ment acidproof tanks fully meet the requirements for galvanizing Because the steel frame is not in contact with acid, the acid corrosion resistance is very good. In addition, if the acid leakage, it is also easy to find leakage points quickly, and also easy to repair leakage. Because the PP board is welded from the slot, it can be repaired just only need pump the acid tanks empty.
The system of pretreatment
PP Pickling Tank
Advantages
| 1 | The p ickling tank is welded with polyethylene sheet, and supported by Steel external frame, that make the whole structure compact and reasonable; |
| 2 | Good anti-aging property, up to 5 years; |
| 3 | Install PP slot in the foundation, easy to observe acid leakage. |
Performance characteristics:
1. Operating temperature is 10 ~100 °C.
2. Strong corrosion resistance, convenient operation, long service life;
3. Light weight, easy to transport and install;
4. Simple and convenient to maintain.
5. Applicable Media : almost all of the inorganic medium and most organic solvents.
PP Pickling Room
The automatic crane and other sensitive equipment such as pumps and sensors, are all protected to avoid vapour and acidic fumes. During regular operation, no person work inside the fully enclosed pickling area.
Advantages
- The pickling tank is welded with polyethylene sheet, and supported by Steel external frame, that make the whole structure compact and reasonable;
- Good anti-aging property, up to 5 years;
- Install PP slot in the foundation, easy to observe acid leakage.
The degreasing tank and the last step of the catalyst treatment tank are external to the Fully Enclosed Room. Because the solution in these two tanks does not have corrosive effects and emit harmful gases
Related Equipment
1. Fluxing Tank Reprocessing & Regenerating System
Flux regeneration units are key equipment in a modern hot dip galvanizing plant. A balanced chemical composition in the flux tank is vital to high quality galvanizing. Normally, fluxes are polluted with iron ions that are dragged in from previous steps in the process. Iron is naturally bond to zinc so an abundance of iron in the flux will inevitably generate large amounts of undesired floating or bottom dross. It is therefore quite crucial to keep iron content in flux under control, avoiding expensive zinc waste in the form of dross
Features
- Easy to use and to maintain, even inexperienced operators will be able to handle them
- Stable operation
- High treatment efficiency
- Small size and light weight, simple structure
Technical parameters
- Max processing capacity: 8-10m3/h
- Power: 14KW
- Control mode: PLC centralized control
Effect Analysis - Adjust the proportion of acid, iron, ammonia and zinc in the flux tank to the best - Recycling of the flux,achieve zero effluents - Control the content of iron is under 1g/L, reduce the zinc consumption - improve the fluidity of zinc liquid and surface quality of workpiece 2. Wastewater Treatment Equipment The hot-dip galvanizing plant must treat the waste water which discharged from pickling, in order to remove hydrochloric acid and iron ions from the water.
2. Wastewater Treatment Equipment
This system can adapt to the impact of waste water quantity and quality's changing. After the treatment of this system, the discharged water quality is stable and reliable, and the effluent water can be fully reached first level of "Intergrated Wastewater Discharge Standard (GB8978- 1996)". Features: The control system of clean water neutralisation & recycle system, is a new mechatronics control system which integrating mechanical and electronic control. According to the quantity changing of wast water, it can receive and transmit signal automatically. 3.Waste Acid Regeneration Treatment & Recycle Equipment System
3.Waste Acid Regeneration Treatment & Recycle Equipment System
A special pickling acid regeneration system is the natural completion to a full hot dip galvanizing plant. Thanks to the use of regeneration systems we can positively impact the environment while elevating the production performance in the plant.
Great savings in disposal costs are the main advantage of installing an acid regeneration system in the plant. Any modern hot dip galvanizing installation should include this specific system, which saves money and improves surface quality. In addition, the great reduction in environmental impact can help the galvanizer in gaining important credits for specific public or private tenders where sustainability is a plus.
by sulfate crystallization and distillation process, the ferrous chloride in waste acid will be separated through sulfuric acid crystallization, increasing concentration, cooling, crystallization, separation. Then the mother liquid is back to the system, and the dilute acid which are extracted can be reused .
Composition:
- Graphite evaporator,
- graphite condenser,
- preheater,
- graphite crystallizer,
- crystal - liquid separator,
- cooling device.
Characteristic:
1, process control: precisely control the amount of sulfuric acid, will not cause excessive sulfuric acid to affect the pickling speed .
2, energy-saving: after two-stage heat exchange before the mother liquid enters the evaporator, the temperature of mother liquid reaches about 80 degrees, saving heat.
Technology advantage
(1) stable operation
(2) low operating cost
(3) reduction of sludge volume
(4) cover a small area
(5) good processing effect
(6) good adjustability
(7) fully automatic control
(8) long service life
Characteristic: - The equipment is suitable for a wide range, easy operation; - large processing capacity, cost-effctive. - Customer can choose the model according to the requirement of water quality and water volume. - Because of good adjustability, it can avoid wasting money.
- The equipment is with a longer service life, low maintenance rate;
- wasted acid regeneration is processed at room temperature, lower energy consumption;
- the complete set of waste acid regeneration equipment can achieve zero emission.
4.acid mist scrubber system
The acid mist scrubber system sucks the collected exhaust gas into the acid mist scrubbing tower and flows through the packed bed section (the gas/liquid contact reaction medium), so that the exhaust gas and the chemical liquid flowing on the surface of the filler are in full contact, and the exhaust gas is utilized. The principle of acid-base neutralization is to adsorb acidic or alkaline impurities contained in the exhaust gas. This achieves the purpose of clean air.
Structure The tower body material: PP board Component: - liquid tank - the wind input section - first and second spray section - mist eliminator - exhaust vent
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