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Comparative selection of sulfuric acid equipment

2009-03-09View Original

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Our company plans to build a sulfur-based sulfuric acid production plant with an annual capacity of 120,000 tons. We are considering two companies; both have submitted their technical proposals. How should we choose the main equipment from these two companies? I would be extremely grateful for the guidance of all experts! !
Reply #22009-03-09
The process for producing sulfuric acid from sulfur is quite mature nowadays. Selection of main equipment: It is recommended to choose options that offer good quality at a reasonable price.
Reply #32009-03-09
For the main equipment, it’s still best to use products from reputable manufacturers; the same goes for vulnerable equipment and components. For everything else, practicality should be the guiding principle.
Reply #42009-03-09
It’s best to refer to their performance records and check the prices of similar devices to see if their specifications meet your requirements
Reply #52009-03-11
Now, in the market, everyone is capable of manufacturing custom equipment. For non-standard equipment, construction is carried out according to the designs; it’s important to control the quality of the raw materials used and to ensure proper welding and shaping of the equipment. As long as the intermediate processes are well controlled, there should be no major quality issues. The production of electrostatic dust collectors is usually done by people from Taixing or Zhejiang, while acid-resistant lining bricks are typically manufactured in Pingxiang, Jiangxi. Refractory material linings are often produced by people from Henan and Hunan. Insulation materials are produced everywhere; the key to making a good choice lies in the design! In many construction projects, no fundamental mistakes are detected during the building process, but too many unexpected problems arise when the project is put into use; therefore, I personally believe that the key lies in choosing the right design firm! Of course, it is also essential to assess the reputation of the construction manufacturers.
Reply #62009-03-12
What items offer good quality at reasonable prices? You get what you pay for, after all. To put it bluntly, imported equipment is far superior to domestic equipment. It turned out.
Reply #72009-03-12
As someone in this industry, I’d like to remind you that general contractors sometimes subcontract the non-standard equipment they have to individuals, hiring a group of people on a temporary basis. Of course, these individuals operate under a legal facade; they often choose companies with construction qualifications to use as fronts, paying fees for management services as well as taxes and other related charges. Such construction teams often cause a lot of trouble for the owner’s management during the construction process. For example, individual owners consider their own interests and fail to work overtime when they should ; Insufficient staffing ; Insufficient technical capabilities ; Safety is not given enough attention ; Between them, delays in payment and poor food conditions might lead workers to go on strike and delay projects; they might even resort to extreme actions such as tampering with certain equipment to damage it. Of course, I’m just talking about the pessimistic possibilities.
Reply #82009-03-13
It’s so complicated! Ah, it’s a shame that no one in our company understands this technology! ! !
Reply #92009-03-13
Haha, those of us who’ve been through it know that sulfuric acid isn’t something fun to deal with – a slight carelessness can lead to an environmental disaster, and hundreds of acres of land can be damaged as a result! If the construction quality is poor or the design is unreasonable, the plant has to stop operating frequently, which is extremely annoying!
Reply #102009-03-13
I feel that the designs these days are not as good as those from before, and the technical skills of the employees in manufacturing companies today are also not as high as they used to be. It’s impossible for a project to operate without any problems right from the start. It should be said that the sulfuric acid production processes and equipment in China are already quite mature; (leaving aside the most advanced ones) then why do various problems keep arising? The key lies in professionalism and the level of skill of the employees – perhaps less than half of the employees in sulfuric acid manufacturing companies have received a higher education. This is perhaps a common problem in the sulfuric acid manufacturing industry.
Reply #112009-03-14
  I agree with what was said on floor 11; many manufacturers of non-standard equipment do indeed operate in this way. Frontline workers have limited skills; most of them can only carry out work according to the diagrams provided. They are unfamiliar with manufacturing and installation standards, lack a sense of these standards, and simply proceed with work based on their habits.   From the previous year to the first half of last year, the sulfate market was in good condition; as business activity increased, companies faced a shortage of talent (to be precise, labor force), and competition was fierce. Many workers were dissatisfied with their current situation and had high aspirations, leading to high staff turnover. When the economic crisis hit, many people were laid off. Additionally, some companies tried to cut costs by reducing wages, which resulted in a decline in workers’ motivation and sense of responsibility. Companies without a formal management system face greater difficulties in performance management in the face of this economic crisis.  
Reply #122009-03-16
With energy conservation and emission reduction being a top priority in the country at present, it is advisable to approach the issue from a developmental perspective. Select qualified products, provided that environmental protection can meet needs for a long time in the future. Do not ruin your descendants’ future for short-term gains. Hehe.
Reply #132009-04-02
You can inquire about the design precedents of the two companies to understand how they are used.
Reply #142009-04-03
There are many manufacturers for which the system operates successfully from the first attempt after completion, with no issues at all; our installation is one of them. The key lies in how the project is managed. If one or two experienced engineering managers who have worked on the production line are included in the project team, they will be familiar with the common problems that arise during system startup due to their long-term experience in managing such operations, and they will naturally pay close attention to preventing these issues. If the project team consists only of people who work with drawings, no matter how good the design may be, it may not be practical in actual production. Generally, there are few problems related to the overall process, while issues usually arise in the details.
Reply #152009-04-03
I’m not sure whether the “experienced engineering management personnel” you mentioned are from the owner’s side or from the design firm If it’s the owner’s decision, then the design institute may not listen to what he says, or even if they do listen, they may not make any changes ; If they are from a design institute, such people are truly rare. :)
Reply #162009-04-03
Even the most sophisticated design firm should listen to the owner’s reasonable suggestions.
Reply #172009-04-04
It is recommended to hire a professional company for the construction and installation of sulfuric acid systems. Assign a dedicated person to coordinate the installation process; such professional companies will take into account all the factors that could affect production during installation, provide reasonable suggestions. Moreover, when taking on the entire project, they will also review some of the drawings prepared by the design institute. In fact, there are no issues with the design, installation of equipment, pipes, and instrumentation related to the dry absorption section, which will help ensure that the whole project proceeds smoothly.
Reply #182009-04-07
The logic is correct; everyone understands it. The problem is that your opinions are usually only raised after seeing the drawings, which forces the designers to make numerous changes, and it may also involve other related fields, causing a lot of trouble. So even if they hear the owners’ reasonable suggestions, they may not change anything; the end result is that improvements will be made during the next design phase (and maybe they’ll forget about it by then :P).

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