Urea hydrolysis process

Poster: It is understood that many manufacturing companies do not possess the necessary engineering design qualifications; can they still provide process design? I guess it won’t work, right?

LXQ. . . . : What you are asking is also what I want to know. The hydrolysis system for the set of equipment I’m currently using was developed by a single manufacturing factory; there has been no progress on the details yet, which is why I came here to ask for advice. If things proceed according to the current plan, I will continue to follow up until it is put into use.

This post was last edited by qiwu9981 on 2010-12-13 at 13:39. OP, how could your boss make such a mistake? These are two completely different fields – the qualifications, certification requirements, and technicians employed are all different. Equipment manufacturers simply process materials according to provided designs; they can manufacture equipment for hydrolysis processes as well as for sulfuric acid production plants. Of course, there are also equipment manufacturers, such as crane manufacturers, who design and produce their own products, but they still work in the steel industry. Chemical engineering design firms, on the other hand, work with drawings and computers; they can design systems for urea production, hydrolysis processes, ammonia synthesis, as well as sulfuric acid production facilities. It depends on each firm’s specialized area of expertise, and the work involves various disciplines such as civil engineering, process engineering, equipment design, piping, instrumentation, electrical engineering, automation, analysis, layout planning, surveying, and cost estimation. In the case of hydrolysis/desorption process design, many of these disciplines need to work together to complete the project. For reference only.

Regarding the desorption-hydrolysis process, large-scale urea plants generally use foreign process packages provided by the patent holders, with domestic design institutes responsible for the construction drawings. Currently, some research institutions in China can provide the desorption-hydrolysis process packages on their own. As Haiyou mentioned on the 4th floor, a design firm is needed to create the construction drawings, as this involves specific issues such as design qualifications and various technical aspects.

Xi Shui is absolutely right; “civil engineering.” . . . \"Processes, equipment, piping, instrumentation, electrical systems, automation, analysis, layout design, measurement, and cost estimation\" – these tasks are certainly carried out by the design institute. However, some of the data related to the processes is provided by the manufacturers of the hydrolysis units; in other words, the design institute is only responsible for refining that information!

After some research, it seems that there are indeed manufacturers in China that handle both design and equipment production; for example, Ningbo Far East seems to be capable of doing this. I assume your hydrolysis equipment was designed and supplied by Ningbo Far East?

Those using Ningbo Far East Company’s hydrolysis technology, please provide information on the operation status: has it met the design requirements? Does the purified water quality meet the discharge standards or the recovery standards?

Friend on the 6th floor, the basic data is provided by the design institute responsible for the urea process design, or by your client; I’m not sure about that. How can the manufacturers of chemical equipment know your basic data regarding hydrolysis/depolymerization? They can’t possibly be gods, right? Things like the overall layout, depolymerization flow rates, temperature and concentration, steam parameters, the purity level required for the waste liquid, the concentration of the reflux liquid, and circulating water parameters – all of these are data held by the client and the original urea design institute. For example, if the conditions of the circulating water differ, even the design area of the reflux condenser will change; it’s really interesting.

LXQ…… The detailed process package has not been finalized yet, and the manufacturer is still looking for it. For now, the Sixth Research Institute has provided a preliminary PID diagram. Once the supplier for this processing unit is determined, the information will be updated immediately!

Our company uses products from Ningbo Far East, which meet the emission requirements