Food factory steam pharmaceutical industry boiler normal shutdown procedure which steps food factory steam boiler shutdown of normal What? For food factory, the sometimes off-season production or production needs to be suspended, are the need for shutdown operations, normal shutdown shall be provided for the shutdown procedure in accordance with the boiler safety rules is in order. If the middle improper operation, then there will likely lead to accidents. (1) a gradual decline boiler load, fuel is supplied to the furnace suspended, followed by suspension of the air blowing, the wind drops, eventually abort the wind. After gas boiler, furnace ceasefire, Fan continue for at least the wind more than talent 5min closed. (2) will take the initiative to manual water supply and water supply, adhere to the boiler water level slightly higher than normal level. (3) when the fire is reduced to the weak state, steam pressure has dropped, the steam supply discontinued, closing the main steam valve and steam barrier to the adapter main pipe. Boiler superheater, should open superheater outlet header properly discharge the steam trap, the superheater to cool, successively with the drain valve closed. (4) When the shutdown, the door is closed and the boiler outlet dampers. With a cast iron boiler economizer, economizer bypass flue damper should be open, but still Boiler Feed via economizer. Steel pipe economizer, the boiler water suspension, should open economizer recirculation pipes and valves; for no separable economizer bypass flue, economizer outlet water temperature should be close supervision, ensure economizer outlet water pressure corresponding saturation temperature is lower than 40 ℃ steam boiler. If the water temperature is higher than this temperature, turn on the water can be appropriately selected, Sheung Shui to cool down.
Industrial pharmaceutical industry boilers prevent scale measures what? Industrial boilers prevent scale measures what? To ensure that no knot or less furring industrial boilers, water treatment work must strengthen measures usually taken include the following items. (1) pretreatment of raw water in the raw water to be taken using the coagulating sedimentation, filtration, purification and the like. (2) the outer pot pot water treatment comprising oxygen and softening process. Raw water often dissolved oxygen, carbon dioxide and other gases, is likely to cause boiler corrosion. Industrial boilers generally use heat deaerator, water for Ca2 +, Mg2 + and other harmful ions often used ion exchange softening. (3) pot-treatment chemical is added directly into the furnace slag fluidity reaction occur through ionic water chemicals with the furnace, and then discharged through the sewage in time. This method is suitable for small-scale low-pressure boilers. (4) Operation reasonable industrial boiler blowdown during operation, due to the continuous delivery of external steam, boiler water is reduced, resulting in increase in solid concentration in the furnace was dissolved, a precipitate gradually accumulated and formed in the long term high temperature scale, so We must be regularly sewage, reducing scale production. If it is found in boiler water alkalinity is too large, increase the sewage; on the contrary, should be reduced.
Improper methods how to solve pharmaceutical industry boiler with a boiler water treatment to be applied more widely up, while there are many companies to reduce costs, save money, boiler water treatment will often take unscientific method, and in the boiler water treatment process as used tools, instruments, also do not meet the relevant requirements, such as three non-electronic scale equipment and antifouling agents. Speaking from personal interests, this approach not only to minus expenses chemicals can also be removed from water analysis personnel expenses, but not fundamentally solve the problem of boiler scale and corrosion, but not only resulted in a waste of energy also reduces the life of the boiler. Also, if used improperly will play a scale inhibitor for the protection of the boiler opposite effect, accelerate the scaling and corrosion of boilers, to the normal operation of the boiler poses a serious threat. For the case of improper boiler water treatment method to re-adjust the boiler water treatment, for the use of new technologies to be approved by the relevant departments for the record and to report to the local labor department, before new technology on the specified boiler treatment, if the boiler water treatment to get good results, then the promotion given by the higher authorities after technical accreditation in order to ensure that the boiler can be used safely. In summary, boiler water treatment method is inappropriate measures to address, in order to ensure the safe use, we must use the correct method to treat boiler water, avoid safety hazards caused by improper handling.
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