Headquartered in California, USA, with a history of more than 73 years, it mainly produces Clayton steam generators. This product is a national honor product of the United States, has more than 30 patented technologies, and was used for military purposes during World War II. After World War II, some were converted to civilian use. The current Belgian branch in Europe mainly produces marine exhaust gas steam generators and waste heat boilers for power plants. The main production equipment of the Los Angeles headquarters in the United States can be supplied to the American, Asian and Chinese markets. Clayton steam generator is different from ordinary traditional boilers. It has low pollution, high efficiency, energy saving, small footprint, strong flexibility, low failure rate and high degree of automation. It is incomparable to any traditional boiler. The biggest advantage is that it is absolutely safe and has no risk of explosion. At present, more than 60,000 units have been used around the world, and there has never been an explosion. Therefore, it has been praised by users around the world and unanimously praised by China's fire protection and labor departments.
Performance comparison between Clayton steam boiler and fire tube boiler
Boiler
Type
Clayton Steam Boiler
Fire tube boiler
Water circulation method
It adopts forced circulation of coils and has high heat transfer efficiency in counter-current heat exchange.
Using fire tubes and large drums, natural circulation results in low heat transfer efficiency.
Node
Structure
Upper
Ratio
Comparison
Volume
p>The structure is compact and the volume is small. The floor area is only 1/4-1/3 of the fire tube boiler with the same capacity, and the heating area is only 1/2 of the fire tube boiler with the same capacity.
It occupies a larger area and the heating area is twice as large as that of the Clayton boiler.
Weight
Since there is no large water storage drum, it is light in weight and is 75% less than a fire tube boiler of the same capacity.
Due to the large drum, a large amount of steel is used and the weight is high.
Safety
Since there is no water storage drum, it will not explode naturally. It is also equipped with various multi-level protections such as water shortage and overpressure, which further increases its safety. The boiler can be installed anywhere. Over 56,000 units have been sold around the world over the past 50 years, and there has never been an explosion or personal injury accident.
It has large energy storage, potential explosion hazard, and the installation location is restricted.
Start-up time
The temperature rises quickly at startup. The cold furnace can provide steam to users in about five minutes after igniting the nozzle. Operators do not need to go to work in advance.
The temperature rises slowly. It takes at least forty minutes for the cold furnace to ignite the nozzle before steam is available. The operator needs to go to work early.
Use
Use
Use
Compare
Compare
Scale Control Certificate You can tell whether the boiler is scaled by whether the feed water pressure rises. If scale is formed, it is easier to clean. For soft scale, water can be used to clear the coil with water; for hard scale, the boiler feed water pump can be used for pickling, which ensures that every heating surface can be pickled and consumes less acid. It is difficult to remove scale. A large amount of acid is consumed during pickling and an acid pump is required. There is no guarantee that every heating surface can be pickled.
Smoke scale control: Whether there is soot scale can be determined based on whether the exhaust gas temperature and the feed water pressure increase. The boiler is equipped with steam soot blowing and rinsing devices to remove soot scale. There is no soot blowing device, and the furnace needs to be shut down for cleaning, which is labor-intensive and expensive. It is impossible to accurately judge whether soot or scale has been generated based on the increase in exhaust gas temperature.
Steam humidity: The steam moisture content at the outlet of the boiler steam-water separator is only 0.5%, and the dryness is high, which is beneficial to production and steam transportation. The heat loss of steam with water is small. Under all loads, the heat from the boiler The steam-water mixture can pass through the separator at high speed, maintaining high quality dry steam even under strongly changing load conditions. The moisture content of the steam outlet of the boiler is generally 2%-4%, which is higher when the load changes drastically, so the heat loss of the entrained water is greater than that of the Clayton boiler.
Exhaust smoke temperature
Due to counter-current heat exchange, the boiler flue gas outlet meets the inlet water, so the exhaust gas temperature is limited by the feed water temperature. At low load, the boiler exhaust gas temperature Lower than the steam temperature and lower than the exhaust temperature of the fire tube boiler.
The exhaust gas temperature is limited by the steam temperature and is always higher than the steam temperature.
The allowable total dissolved solids content of boiler water is generally controlled at about 3500-6500ppm (up to 8550ppm). Since it is forced circulation, the total dissolved solids concentration in the water discharged from the steam-water separator is up to 40,000 ppm, it will not cause problems such as moisture carrying and foam overflow. Compared with the total dissolved solids allowed by fire tube boilers, which is 3500 ppm, the sewage discharge rate is much smaller than that of fire tube boilers. The allowable total dissolved solids content of boiler water is 3500ppm, and the sewage discharge rate is larger than that of Creden boiler.
The performance of the feed water pump can transport feed water at 204°C, so it can feed high-temperature condensate water directly to the boiler. The water pump is a diaphragm pump, and its inlet and outlet water avoids contact with vulnerable moving parts, so there is no packing. leakage and wear of moving parts, requiring less maintenance. It can only transport water at about 100°C, and its moving parts are prone to leakage and wear, requiring a large amount of maintenance.
Boiler efficiency The thermal efficiency of the boiler increases as the load decreases. The thermal efficiency at low load is higher than at full load. The average thermal efficiency at 20%-100% load is 84.3% (based on the high calorific value of the fuel) , if calculated based on low calorific value, this efficiency should increase by 5%), which is 6.7% higher than the average efficiency of fire tube boilers. Thermal efficiency decreases with the decrease of load. The average thermal efficiency of 20%-100% load is about 77.6%.
Fuel Savings Clayton boilers can save 20%-50% of fuel than fire tube boilers, so the investment in a complete set of boiler equipment can generally be recovered in about 2-3 years. The savings are broken down as follows:
1. Quick heating and steam supply at cold furnace start-up 2-20%
2. Average operating efficiency (30-70% load) 1-12%
3. Control of soot and scale 2-10% (identification-prevention-removal)
4. Automatic sewage discharge (allowing a higher total dissolved solids of 0.2-2%
5. Condensate heat recovery (when using a high-temperature 5-15% condensate recovery system)
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