With the trend of "converting coal to gas (steam)", enterprises need to choose between the two schemes of medium temperature and medium pressure steam and burning natural gas. The steam molding machine due to no fire hazards, no greenhouse gas emissions, no need to replace the combustion nozzle, stable supply, low price and other obvious advantages of printing and dyeing enterprises become the best choice. So what are the common mistakes? The following is the introduction:

Steam modification of molding machine

One, after the steam molding machine through the steam trap into the drainage pipe network, and then directly discharged to atmospheric pressure, and then recycling or direct discharge.

Compared with the heat transfer of conductive oil, the steam exchange has more "condensate" as a byproduct. As a result, the following two problems arise:

1, to ensure the continuous operation of the molding machine reconstruction project, to add a trap after the heat exchange equipment. And trap movement nearly 2 million times a year, once damaged need to replace, otherwise it will affect production. This creates replacement and maintenance costs.

2. The 234℃ steam in the heat exchange equipment generates isothermal saturated condensate, which is discharged through the steam trap and instantaneously generates a large amount of flash steam, and at the same time becomes 100℃ condensate for discharge or recycling. According to the "Thermal Manual", the flash evaporation capacity is 1.56% for every 10℃ drop in the saturated condensate temperature after the trap, and the waste can be calculated as 20.28%.

Ii. Improper energy saving scheme: The disadvantages of the steam transformation of this molding machine lie in:

1) Use front and rear valves to control temperature. In fact, the temperature is controlled by letting the equipment store water. Not to mention this method can not accurately control the temperature inside the box, heat exchange efficiency can not meet the requirements. As is known to all, the heat exchange efficiency of water is far lower than saturated steam, equipment water storage, will inevitably lead to low heat exchange efficiency, thus affecting the feeding speed, and ultimately affecting the setting machine speed (that is, output), resulting in high unit product cost.

2) High cost of steam modification of molding machine. The system includes DCS control system, temperature sensor and electronic valve. The complete system is imported from Korea and the price is around 500,000. Domestic imitation of the system also to tens of thousands.

3) Complex system, high replacement and maintenance costs.

Above is about the molding machine steam transformation common related error introduction, want to know more about the molding machine transformation price related issues, welcome to inquire about our official website, we will explain in detail for you.