With the continuous development of radiator technology, now the insert radiator no longer uses the traditional welding technology, but uses a new type of brazing special ammonia decomposition hydrogen production furnace technology, this new type of welding technology is similar to the traditional welding technology Compared with, what are the advantages?

1) Calciner tank: The inner tank of the ammonia decomposition hydrogen production furnace is made of high-quality heat-resistant stainless steel 2520, which is welded by TIG. The U-shaped tubular vertical decomposition furnace can be used to slow down the flow rate of liquid ammonia evenly when entering, and make full use of the nickel catalyst in the furnace without dead corners. The use of this material has the characteristics of high temperature resistance, strong corrosion resistance and long service life.

2) Catalyst: Adopting Z204 high temperature sintered nickel catalyst from Southwest Institute of Chemical Industry, which has good decomposition effect on liquid ammonia, has high decomposition activity, is not easy to pulverize, and the catalyst is not easy to age.

3) Heating element: The internal heating system uses nickel-chromium alloy, which has high thermal efficiency and is not prone to failure. The heat preservation system adopts light aluminum silicate fiber insulation cotton formed by vacuum suction filtration, which has good heat insulation effect and reduces heat dissipation of the ammonia decomposition furnace. It can effectively reduce the consumption of electric energy. The ammonia decomposition furnace of our company adopts a new structure, and the heating wire is replaced without stopping the gas: When the heating wire is broken or damaged, disconnect the power supply, and then pull the heating wire out of the side of the furnace. Just plug in the new heating wire and turn on the power supply. The drawing-type heating wire has a short replacement cycle, and the replacement can be completed in 10 minutes. The old-fashioned structure used a built-in heating wire. When the heating wire is broken or damaged, the entire furnace must be stopped, and the furnace temperature will drop, then the furnace will be opened to take out the heating wire for replacement, because some companies cannot buy two devices at the same time. , One working and one standby. This is a waste of time and affects the company's normal production. Sometimes the price of a furnace product of the company may be more expensive than the price of a set of equipment.

4) Heat exchanger: When the ammonia decomposition furnace is working, the liquid ammonia in the ammonia cylinder enters the vaporizer to vaporize the liquid ammonia, so that the liquid ammonia is changed from liquid to gas, reducing the electrical energy consumption of ammonia decomposition, and ensuring the decomposition rate of ammonia , And to ensure the service life of the catalyst.

5) Gas cooler: Equipped with a gas heat exchanger, which can initially reduce the temperature of the pyrolysis gas from the ammonia decomposition furnace, and can also vaporize the liquid ammonia entering the ammonia decomposition furnace, reduce the pressure of the ammonia decomposition furnace, and remove the heat from the gas. The exchanger was initially cooled.

6) Temperature control: Digital display temperature controller and K-type thermocouple are used to control the temperature in different zones. The thermocouple adopts compensation wire, which effectively solves the phenomenon of large temperature deviation during the heating process of the ammonia decomposition furnace. Such setting value temperature or control adjustment is extremely convenient.

Different parts of the insert radiator are connected by welding, and the quality of welding directly affects the quality and service life of the insert radiator. The welding process mainly includes filler welding and bulk welding. Relatively speaking, bulk welding has good corrosion resistance, and there is a uniform weld scar, without grinding; filler welding has poor corrosion resistance, and the surface is smooth and smooth after polishing. Consumers mainly look at whether the welding is firm, the appearance of the weld seam is uniform, and whether there is unevenness when buying. However, it is not necessary to make the weld be smooth and flat, because excessive grinding treatment will easily reduce the strength of the welded part and cause water leakage. Therefore, welding is one of the important reasons that affect the life of the insert radiator.

The welding technology of the insert radiator is a very rigorous work, and we cannot tolerate any carelessness, so as to ensure the quality of the insert radiator to the greatest extent.