What is the longest operating cycle for a statistical chemical plant?
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Prize contest! ! ! In today’s increasingly competitive environment, chemical companies strive to achieve better market competitiveness and greater efficiency by maintaining production that is \"safe, stable, long-term, at full capacity, and of high quality\" (referred to as \"S, S, L, F, H\"). Therefore, we should learn from the advanced practices of those companies that are able to meet these requirements and operate stably over the long term, while also drawing lessons from their failures, in order to ensure that our own companies can also achieve \"S, S, L, F, H\" level of production! So please tell us what is the longest continuous operating period your company (enterprise) has achieved since it started operating (Mention the product name, raw materials, scale, and production process.) As far as I know, the record holder for the longest operating cycle to date is Chuan Tianhua (378 days), followed by Chi Tianhua and Yun Tianhua (both over 350 days). (All three of these companies use natural gas as a raw material to produce synthetic ammonia and urea.) I’m not sure if this information is accurate; please share your opinions and insights based on what you know! Participation earns rewards! Everyone is encouraged to participate actively and claim their prizes! (The content of the posts must be reliable, as once the event is over, I will rank the operating cycles of various companies to avoid any mistakes. Thank you for your cooperation!) ! ) Event deadline: January 31, 2008
From October 6, 2001, to January 13, 2004, for 27 months (the exact dates are not clear), the German AQUAFIL three-reactor process continuous polyester plant (with a daily production capacity of 100 tons of PET resin), using purified terephthalic acid and ethylene glycol as raw materials. On January 15, 2004, capacity was increased to 150 tons per day through technical upgrades. It has dual power supply, so it was not affected by power outages. Short shutdown incident that occurred during this period: During the commissioning of the new unit, in the final stage of the process, there were design issues with the conveying pipelines, resulting in waste discharge at low load for half a day ； A problem occurred in the slurry preparation process, resulting in a four-hour shutdown, but subsequent processes were not affected ； The esterification reactor was emergency repaired once, but there were no significant adjustments to the process operating conditions ；
Excuse me, is this the record of that factory upstairs? ?
Do we include our oil and gas production in the calculations? We are able to produce for a very long time; we have offshore gas fields that can operate continuously. We haven’t calculated this yet, as shutdowns for maintenance are required every year, but if there is an unexpected shutdown during production, operations are resumed quickly
Production of urea at 200 kt/a using the full-circulation aqueous solution method, taking about 200 days
It seems there’s no basis for comparison; it only makes sense to break it down by industry
Due to inadequate consideration, the scope of the industry was set too broadly; therefore, taking into account my own industry, the scope has now been defined as: fertilizer plants and coal chemical enterprises, methanol production facilities, and their downstream products! Everyone is welcome to continue the discussion! !
I agree with the view from floor 7 – such things are completely incomparable. But let me talk about my company’s gas fractionation units: they require annual maintenance, with an operational cycle of 350 days
Our company’s ion-exchange membrane caustic soda has achieved a maximum continuous operation time of 210 days
Our company is the nylon chemical production facility in Asia with the longest operating cycle. I remember that a reward system was introduced for completing 100-day periods: a reward of 100 yuan per person for the first 100 days, double that amount, That is, 200 yuan per person, for the second 100 days; 400 yuan per person for the third 100 days. The fourth period was not 100 days but 50 days, with a reward of 800 yuan per person. Due to the extremely long operating time, the operation had to be halted, and it took a year and a half before operations could resume. At that time, when one unit stopped operating, the other units were also affected, especially the electrical and instrumentation staff who would arrive immediately upon being called, which completely changed the previous attitude of reluctance to respond. Only by working together as a team have we been able to persevere for such a long time; hehe, it’s the bonuses that attract everyone here
Our heavy oil catalytic cracking unit has been in operation for 500 days now, and the company requires that it continue to run until March or April 2008 in order to carry out scheduled maintenance. The device operates smoothly, and there should be no issues with continuous production.
We are a manufacturer of melamine, and our company has only been in operation for 50 days – isn’t that too short a period of time?
Attention! ! :hug: :hug: Attention! ! :Attention! ! : Statement: I have already defined the scope as follows: fertilizer factories and coal chemical enterprises, methanol production facilities, and their downstream products! So please stay on topic! Please indicate the factory name when participating simultaneously, so that it is easier to rank at the end of the event! Thank you for your cooperation!
In our plant, a single gasification furnace has operated continuously for 136 days, while the burner has operated continuously for 197 days.
In my opinion, the long cycle time in the chemical industry is related to its processes and procedures. Coal chemical processing is affected by gas conditions, and the gasification process is a key factor that determines the length of this cycle time. Theoretically, coal chemical processes have a shorter operational lifespan compared to those based on natural gas, as they lack one important limiting factor. By the way, friends upstairs, does your factory use ceramic burners? 197 days is quite impressive. Nowadays, a major overhaul once a year is quite common, and an operation cycle of 330–350 days is also typical, with a few processes being exceptions. Last edited by bluetop on 2008-1-9 20:29.]
What was said on the first floor is correct; that was before we arrived here~~1`
It’s too general. For example, in the fine chemicals industry, how is operating time calculated?
It has been three years since Yangba Vinylene was put into operation, and it is planned to run for another year or so