Reward-based question submission board for the “One Question per Day” activity in the tower area
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This post was last edited by wu_pb on 2011-5-1 09:22. Sequence: Starting from this month, in order to actively implement the \"one question per day\" format, and based on the surveys conducted in this forum (http://bbs.hcbbs.com/viewthread.php?tid=832261&from=recommend_f), the \"one question per day\" format in this forum has been revised as follows: Mondays and Tuesdays are dedicated to noun explanations/fill-in-the-blank questions, Wednesdays and Thursdays to short-answer questions, Fridays and Saturdays to discussions (essentially topics related to real-world work situations), and Sundays are reserved for summarizing the week’s content! To increase the level of participation from forum users in this section and ensure the smooth operation of the “One Question per Day” activity, we are now seeking questions for this purpose by offering rewards, following the example of other popular sections. Those who participate will be rewarded, and those whose questions are selected will receive substantial prizes. Requirements regarding the number and format of questions: 1 definition (with more than 2 entries) ； 2 Short-answer questions (with answers attached). 3 Essay questions (related to real-life situations; design, production, or manufacturing are all acceptable; background information as well as the questioner’s own understanding or opinions must be provided), and the questioner may choose one type or multiple types of questions. This post is dedicated to collecting questions for the Daily Question challenge; once a question bank is established, the Daily Question activity will be carried out on a regular basis. Please do not reply with answers here! A fine of 5 wealth points for violators! Thank you for your cooperation! 5 J- W9 A- v1 t% \6 P$ @I. Rules of the activity: 1. The topics for questions can include equipment design, selection calculations, practical operations, production processes, equipment maintenance, renovations, and other related knowledge areas. 2. The questions provided must come with answers or explanations; if there are doubts about the answers, they can be indicated after the question. Both the question and answer must be posted in hidden form within the reply to this post; otherwise, they will be invalid. Hidden method: http://bbs.hcbbs.com/thread-492556-1-1.html1 X6 T9 H x, L% v! B II. Reward system: * z5 |) A H0 k5 Z 1. Those who actively participate in creating questions will be rewarded with 5 to 20 units of wealth, depending on the quality of their questions. 2. If the submitted question is adopted as a “Question of the Day,” a charm reward of 1–3 is given.
This post was last edited by wu_pb on 2011-5-9 21:15. Why is the middle part of the HCl absorption tower used in polysilicon production cone-shaped? Is a liquid distributor installed inside?
1. Definition of terms a. Distillation: A process that involves multiple cycles of partial vaporization and partial condensation, taking advantage of the differences in the volatility of various components. b. Plate efficiency: Also known as Murphry plate efficiency, it is the ratio of the composition change after a gas or liquid passes through an actual plate to the composition change after it passes through an ideal plate. 2. Short answer to the question: How many types are there of tower panels? What are the indicators for evaluating tray performance? Plate trays can be divided into two categories: those with downcomers (also known as overflow plate trays) and those without downcomers (also known as through-flow plate trays). The main indicators for evaluating the performance of tower equipment are: production capacity, tray efficiency, tray pressure drop, and operational flexibility. These parameters are closely related to the tray structure and the flow behavior of the gas-liquid phases inside the tower, and the proper operation of the tower is also dependent on the hydrodynamic conditions within it. PS: I’m still in school and don’t have any practical work experience, so I can’t help with question 3. Waiting for the opinions of professionals in this field.
What are the explosion conditions for gasoline vapor? Answer: (1) Gasoline vapor mixes with air, and its concentration must be within the explosive range. Under normal temperature and pressure, the explosive range of gasoline, on a volume basis, is 0.76–6.9%. (2) There is a fire source in the space within the explosion limit range. Gasoline is a volatile liquid, and its evaporation rate is related to its composition; lighter variants with fewer carbon atoms evaporate more quickly. Under standard conditions, one kilogram of gasoline can evaporate approximately 400 liters of gas, which can bring 36 cubic meters of air to the lower limit of its explosive concentration. Therefore, when using gasoline, there is a high possibility that its vapors may reach the explosive limit in certain areas. Gasoline vapor within its explosive range can explode upon encountering even a tiny spark with just 0.15 millijoules of energy; therefore, in addition to open flames, things such as the operation of electrical switches, collisions between metal objects, and sparks generated by static discharge can all cause gasoline vapor to explode
Among the following monohydrocarbons, the one that reacts fastest in catalytic cracking is: A. Alkanes B. Cycloalkanes C. Aromatic hydrocarbons D. Alkenes. Answer: D
In an atmospheric pressure column, what is a reasonable range for the pressure drop per unit height of the packing layer? Answer: 145 to 490 Pa/m
Is it possible to use wireless control valves for chemical processing units to enable remote control? Why?
Under what circumstances should a conical skirt be used for towers?
It’s so troublesome; you have to reply first to be able to view it. . . . . . . . . . . . . . . . . . . . . . . . . .