Weekly Topic Submission Post
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This post was last edited by lijianhuai on 2011-10-1 at 13:23. The three sections in the petrochemical area are seeking topics for discussion from all marine enthusiasts on a weekly basis. Everyone is welcome to propose meaningful topics; there is no need for a standard answer. It’s best if the topics relate to problems that arise during the operation of one’s own equipment. If you propose a topic and offer suggestions or recommendations, those suggestions must be kept hidden until the moderator approves them, after which they can be revealed. We welcome everyone to participate actively; participants will be rewarded with certain wealth in accordance with the rules.
Let’s discuss the types of main fans currently used in catalytic cracking units – which type is more suitable for operation in local refineries? Centrifugal? Axial flow? Pros and cons?
Let’s discuss which form of catalytic cracking tri-spiral is suitable Vertical? Horizontal? Multiple tubes? Single tube? Pros and cons?
Let’s discuss how the petroleum and chemical industry can cultivate and select professional talents, and establish a fair and credible system for competition and selection. How to assess practical skills and problem-solving abilities within the mechanism.
Discuss how to effectively detect the thermal expansion and displacement of equipment and pipelines, in order to identify potential hazards in a timely manner.
Let’s discuss the advanced foreign concepts in design, management, and operation, as well as the significant differences existing in domestic refineries.
This post was last edited by chengkang on 2011-10-15 06:55. How can one determine the amount of material stored in the catalyst regenerator? How should this amount be determined when the processing volume fluctuates significantly, for example, 25 T per hour today and 40 T per hour tomorrow? What are the advantages and disadvantages of having a certain level of material stored in the regenerator?
Since range hoods are operated for long periods of time, from installation to normal use, could everyone please discuss the shortcomings and advantages of their respective range hoods?
Reply to 1# lijianhuai: The coking unit is regarded as the ‘landfill’ of a refinery, but in the actual production process, in order to meet the quality requirements for coke, the properties of the raw materials used for coking must be kept within specified limits. This makes it difficult for the coking unit to function as a ‘landfill’; waste materials such as dirty oil and sludge from the refinery cannot be processed within this unit. Let’s discuss the advantages and disadvantages of allowing the coking unit to abandon focus on coke quality and instead function as a ‘landfill’ for the refinery’s waste
What are the differences between the newly adopted cyclone separators and traditional gravity separators, and what is their performance in gas-liquid separation? For light oil condensates containing free water, what is the best method of dehydration before they enter the condensation (cryogenic) unit?
Issues regarding the closed-loop startup of the atmospheric and vacuum distillation unit: The closed loop is operated at 330 degrees Celsius to initiate bottom blowing in the atmospheric side column; at 350 degrees Celsius, the oil from the bottom of the side column is circulated once. The residue is fed into the residue tank in an open-loop manner – can it be used as a raw material for the coking unit?