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Half Coil Tube Heating Reactor: Advantages by Leading China Suppliers and Factory
Description
Compared with the commonly used jacket reactor in China, the outer half tube heating stainless steel reactor has many advantages.
Wall Thickness
Reduce the wall thickness of the kettle and improve its load-bearing capacity.
Heat Transfer
Beneficial for improving heat transfer efficiency. It can both improve the heating system and reduce thermal resistance.
Energy & Layout
Save energy consumption. The ratio of jacket volume to half pipe volume is used to reduce investment. Reducing the overall diameter of the reactor body is beneficial for workshop layout.
Steel Saving
Save steel.
The operating temperature of the reaction kettle is relatively high, and usually chemical reactions can only be carried out under certain temperature conditions, so the reaction kettle bears both pressure and temperature. There are usually several methods to obtain high temperatures:
1. Water Heating
When water heating requires a low temperature, it can be used. There are two types of heating systems: open and closed. The open type is relatively simple, consisting of a circulating pump, water tank, pipeline, and a regulator that controls the valve. When using high-pressure water, high mechanical strength is required for the equipment. The outer surface of the reactor is welded with a snake tube, which has a gap between the snake tube and the reactor wall, increasing thermal resistance and reducing heat transfer efficiency.
2. Steam Heating
When the steam heating temperature is below 100 ℃, steam below atmospheric pressure can be used for heating; Within the range of 100-180 ℃, use saturated steam; When the temperature is high, high-pressure superheated steam can be used.
3. Heating with Other Media
When heating with other media, if the process requires operation at high temperatures or to avoid using high-pressure heating systems, other media can be used instead of water and steam, such as mineral oil (275-300 ℃), biphenyl ether mixture (boiling point 258 ℃), molten salt (140-540 ℃), liquid lead (melting point 327 ℃), etc.
4. Electric Heating
Electric heating wraps the resistance wire around the insulation layer of the reaction vessel or installs it on a specially designed insulator at a certain distance from the reaction vessel, thus creating a small spatial gap between the resistance wire and the reaction vessel. The first three methods of obtaining high temperature all require adding a jacket on the kettle body. Due to the large amplitude of temperature changes, the jacket and shell of the kettle are subjected to temperature changes, resulting in temperature difference pressure. When using electric heating, the equipment is lightweight and simple, the temperature is easy to adjust, and there is no need for pumps, furnaces, chimneys, and other facilities. It is also easy to start, with low danger and cost. However, the operating cost is higher than other heating methods, and the thermal efficiency is below 85%. Therefore, it is suitable for heating temperatures below 400 ℃ and places with lower electricity prices.
Specification
| Working Volume | Full Volume (L) | Vessel diameter (mm) | External coil heat transfer area (m²) | Inner coil heat transfer area (m²) | Motor (kw) |
|---|---|---|---|---|---|
| 500L | 550 | 900 | 2.438 | 2 | 2.2 |
| 1000L | 1100 | 1100 | 2.867 | 2.6 | 4 |
| 1500L | 1650 | 1200 | 3.537 | 3.1 | 4 |
| 2000L | 2200 | 1300 | 4.165 | 3.8 | 5.5 |
| 3000L | 3300 | 1500 | 5.569 | 5.4 | 7.5 |
| 6000L | 6600 | 1800 | 10.323 | 8.7 | 15 |
| 10000L | 11000 | 2200 | 50.345 | 10.9 | 22 |
| 20000L | 22000 | 2400 | 101.679 | 13.8 | 55 |
Frequently Asked Questions
What are the main advantages of an outer half tube heating reactor?
Compared to standard jacket reactors, the outer half tube reactor reduces wall thickness, improves load-bearing capacity, enhances heat transfer efficiency by reducing thermal resistance, saves energy, and reduces overall steel consumption.
What temperature ranges are suitable for steam heating in these reactors?
Steam below atmospheric pressure is used for temperatures below 100 ℃. Saturated steam is utilized within the 100-180 ℃ range, and high-pressure superheated steam is used for higher temperature requirements.
Which alternative media can be used for high-temperature heating?
To avoid high-pressure systems at high temperatures, media such as mineral oil (275-300 ℃), biphenyl ether mixtures (boiling point 258 ℃), molten salt (140-540 ℃), and liquid lead (melting point 327 ℃) can be used.
What are the pros and cons of using electric heating for reactors?
Electric heating systems are lightweight, simple, easy to adjust, and do not require auxiliary facilities like pumps or chimneys. However, they have higher operating costs and a lower thermal efficiency (below 85%).
How does water heating affect heat transfer efficiency in reactors?
When using water heating, the outer surface of the reactor is welded with a snake tube. The gap between the snake tube and the reactor wall increases thermal resistance, which subsequently reduces heat transfer efficiency.