The Development and Present Situation of Intelligent Control of Continuous Exothermic Reaction Kettle
In the chemical production process, the temperature of the reactor had a serious impact on the production quality of chemical products, so the intelligent control of temperature was crucial to production. For the temperature control of the reaction kettle, the conventional single-loop pid adjustment was suitable for simple situations. It included the controlled object (reaction kettle), the detection and transmission device (thermocouples or thermal resistance), the control device (DPS), and the executive adjustment mechanism (regulating valve). For example, when the temperature of the reactor did not reach the set value, the hot water intake valve was opened wide, and when it reached the set temperature, it was closed to maintain the temperature. However, for a relatively complicated reaction process such as a continuous exothermic reactor (such as heating up the reaction first, releasing a large amount of heat after the reaction starts, and cooling down to make the reaction proceed smoothly), simple PID control was difficult to meet the requirements. At present, there were many research results on the temperature control of the reactor (including the continuous exothermic reactor) at home and abroad. There are many ways to improve on the basis of the PID control: 1. Some scholars combined the prediction model with the PID control and proposed the output prediction PID controller to compensate the lag problem. 2. There were also methods to combine double cross limiting with PID, or to combine the inner membrane control IMC with PID to improve the control effect. 3. Furthermore, the fuzzy PID control algorithm was designed by combining PID and fuzzy ideas, which was superior to the general PID algorithm in response, overshooting and tracking performance. Based on expert experience and rules, fuzzy control was suitable for non-linear and lagging complex systems. However, it was easy to cause oscillations when used alone, so it was often combined with other algorithms to improve. For example, it could be combined with PID control to meet the requirements of large inertia molten salt temperature control system, or applied to furnace temperature control, air conditioning control to improve control accuracy, etc. By predicting the future state of the controlled object in advance, the prediction control can solve the control problem of the lagging system. There are many kinds of prediction control algorithms, such as combining fuzzy and prediction ideas to design fuzzy prediction controller to solve the temperature control problem of gas phase equipment; proposing a new type of general prediction control algorithm (AM-GC) to solve the problem of large lag, large inertia and time-varying in temperature control; combining grey prediction and PID to improve the traditional control method of large lag system. In addition to the above methods, there were also Smith prediction control, neural network control, self-adapting control, and a class of advanced optimization algorithms (such as particle swarm, ant colony, etc.) combined with the above methods. Although the Smith Predictor Control had a simple structure, it was too dependent on the system model and was sensitive. The neural network was a multi-disciplinary field of technology, not a specialized control algorithm. In short, the intelligent control of the continuous exothermic reactor process was constantly developing, and the research and combination of various control methods were constantly improving the temperature control of the reactor. Read more exciting novels for free
What is the price of the Reversible Counterattack Hammer Crusher?
The price of the Reversible Counterattack Hammer Crusher will vary according to different sales situations, such as the number of purchases. For example, the price of 1 - 999 pieces is $13.50, the price of 1000 - 99999 pieces is $13.00, and the price of 100000 pieces is $10.00. There is also a Beijing counterattack stone breaker, a reverse-counterattack hammer breaker, a secondary breaker, and the price is $488,888.00 (1 unit). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The female protagonist is always an 18-year-old novel
The following are some stories related to novels where the female lead may forever be eighteen years old: - In "Forever 18 (Brain Hole Story)," the female protagonist was told that she would forever be 18 years old. The story described her life experiences, including her encounter with a witch when she was sick. Under the setting of this story, the female protagonist had a special situation of being forever 18 years old. - In "Best Actor, Help Me Fight Against the Anti-Fans," there was a story setting of an eternally 18-year-old female star and a powerful Best Actor who doted on his wife. The female star and the female lead here were also eternally 18-year-old. The story was a sweet story in the entertainment industry, involving the male star helping the female lead who was exposed online. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Pokémon was swallowed
In the world of Pokémon, there are scenes involving Pokémon being swallowed. For example, the Arabian Flower would lure its enemies by emitting a fragrance. When it found prey, it would often use the leaves on both sides of its body as an auxiliary tool to tie the enemy over and swallow them. The Devouring Beast was a poisonous Pokémon. It did not have teeth. When dealing with enemies or eating, it would first spit out the poisonous liquid in its body and then swallow the other party in one gulp. However, this was more likely to happen in Pokémon's battle, hunting, and other settings.
A novel where the female protagonist went to an appointment with someone else behind his back
In the reference materials," Morning and Evening " mentioned that the female protagonist went to the Southern Courtyard to meet Qin Siyuan's son. After the prince knew about it, he went back to pick up the female protagonist. This was in line with the plot of the female protagonist going to meet someone else behind the prince's back. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction that forms the deposit is all heat. Why?
The reaction that formed the deposit was not always an exothermic reaction. There were many factors to consider when determining the thermal effect of the precipitations. From the point of view of precipitation-dissolution equilibrium, precipitation-dissolution equilibrium was generally an heat-absorbing reaction. Judging from the law of the change of the solute with the temperature, the higher the temperature, the greater the solute, which meant that the precipitation-dissolving process was moving in the direction of dissolving and was heat absorbing. Then, the reverse process of forming the precipitations was heat releasing. The lower the temperature, the smaller the solute. The precipitation-dissolving equilibrium was heat absorbing, and the formation of precipitations was heat absorbing. For example, the reaction of diluted sulfuric acid and lithium hydrogen to produce lithium hydrogen and water was an acid and base neutralizing reaction, and the acid and base neutralizing reactions were all exothermic. However, one could not assume that all reactions that formed precipitations were heat-generating. From the nature of the reaction, the formation of a deposit could be seen as the reverse reaction of the ionisation process. The ionisation process was heat absorbing, which also meant that the reaction that formed a deposit was not necessarily an exothermic reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Chun Huayan's complete cast list
The cast list of " Spring Flower Flame " included Liu Xueyi and Wu Jinyan as the leading actors, Bi Wenjun as the special actor, Zhao Xiaotang and Chen Chuhe as the special guest actors, Huang Riying as a guest actor, and Huang Yunyun as a guest actor. Liu Xueyi played Murong Jinghe and Wu Jinyan played Mei Lin. Watching " Hunting Poison " wasn't enough. Everyone, please click to read the novel!
The oldest cellar
The old well of Kouzi wine was said to have been dug during the Sui and Tang Dynasties. Its old cellar had high scientific value, but it was not certain that this was the oldest cellar. At present, there was no definite information on which cellar was the oldest. While waiting for the TV series, he could also read the exciting content related to this site!
Tianming Li's novels
According to the reference materials, there were novels related to Tianming Li, such as The First God of All Ages, which described Tianming Li's pets as legendary primordial Chaos beasts and his chickens as the eternal purgatory phoenix that fed on the sun. Also, Master of the Eastern Emperor Sword also involved Li Tianming's plot. For example, in the introductory chapter, episode 2282, it mentioned that his hometown was destroyed, and in episode 2252, it mentioned that he was coerced. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Who is Fan Xian? Which celebrity?
Fan Xian was the main character in Maoni's novel Joy of Life and its derivative works. He was played by Zhang Ruoyun in the TV series Joy of Life Season 1, which aired in 2019.
Please keep quiet when you get to your seat. Translate English
When you get to your position, please keep quiet. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>