After sending Lu Wenwu away, Lu Yi's cheeks turned crimson and said apologetically: "I'm sorry, my brother doesn't know the rules and calls people around, don't be angry." ”

Geng Zhiyuan snorted and laughed: "Third brother-in-law, your brother is really a talent." ”

Lu Yi's face turned even redder with shame, and she said angrily: "Don't say it, what's so funny?"

"I really want to be his third brother-in-law, but unfortunately his sister doesn't want to. Geng Zhiyuan looked at her and joked.

Lu Yi blushed to the neck, and said angrily: "If you talk like this again, I'm leaving." ”

"Okay! I won't say anything. Geng Zhiyuan couldn't help but laugh and said: "What is the real third brother-in-law I am doing for him?

"Alas!" Lu Yi sighed: "The head nurse introduced me, the son of a teacher in the medical school." ”

"Very good, what does he do?"

"I said I started a small company, and I don't know what I did. As Lu Yi spoke, there was a faint trace of sorrow in his eyebrows, although Geng Zhiyuan saw it, he paused and finally couldn't help but ask.

After the National Day holiday, Geng Zhiyuan arranged Lu Wenwu into Yuxiang Restaurant for a one-month internship period, and the monthly salary after the internship period expired was 360 yuan, and the bonus was calculated separately. Lu Wenwu was very satisfied with the treatment and working environment of Yuxiang Restaurant, and happily went to work.

In early October, the additive project of the Chemical Research Institute officially started, and the official name of the project was the FG project of Donghai Chemical Research Institute.

Geng Zhiyuan borrowed a set of methanol distillation process drawings with an annual output of 10,000 tons from the archives for reference, combined with the technical process package provided by the research institute, and probably completed the first version of the flow chart and equipment layout drawing. In the preliminary design stage, there is no need for piping as a material, but it is necessary to put forward the conditions for each specialty.

In late October, not long after Geng Zhiyuan sent out the conditions for various majors, Zhu Lei, a professional in equipment, hurriedly found him.

"Man, there's something wrong with what you're proposing. Zhu Lei is also one of the twelve Arhats who entered the hospital last year, and they are familiar with each other, and they are naturally straightforward when they meet.

"Is there a problem with the conditions?" This is the first time that Geng Zhiyuan has proposed complex equipment conditions such as towers and heat exchangers after participating in the work. Since people came to the door, he hurriedly humbly asked, "Tell me what's wrong?"

"Look. Zhu Lei pointed to the conditions of the reboiler and heater and said: "You wrote in the medium column that crude methanol contains chloride ions, the content is up to 200ppm, and the maximum operating temperature of the reboiler has reached 110 degrees, how can you choose a heat exchange tube made of 0Cr18Ni9 (304)? This will lead to pitting and stress corrosion." ”

"Chloride ions?304?stress corrosion?" chemical engineering students have a shallow learning of materials courses, and have no concept of chloride ions that can cause porosity and stress corrosion of stainless steel.

According to the data given by the research institute, the crude methanol that needs to be distilled contains a small amount of chloride ions, and the content is about 200ppm at most, and the normal content is less than 100ppm. In the process technology package provided by the research institute, the heat exchanger of methanol distillation is all made of 0Cr18Ni9 (304), of which the maximum operating temperature of the reboiler is about 110 degrees, and Geng Zhiyuan is completely in accordance with the conditions proposed by the above data.

"I'm not mistaken, the material recommended by the institute is 304. Geng Zhiyuan pointed out the relevant content of the technical package to Zhu Leidao.

Zhu Lei shook his head and said: "He's definitely not right, I don't believe you read the manual." ”

Zhu Lei opened the "Corrosion Data and Material Selection Manual" he brought, pointed to the page of porosity and stress corrosion, and said: "You see, both kinds of corrosion mention austenitic stainless steel and chloride ion systems, I didn't lie to you, right?"

Geng Zhiyuan took the "Corrosion Data and Material Selection Manual" and took a closer look, and as Zhu Lei said, it was mentioned in the chapter on porositic corrosion and stress corrosion that austenitic stainless steel and chloride ion systems are prone to corresponding types of corrosion. He found the chapter 0Cr18Ni9, which clearly states that "salt solutions containing halogen ions may cause pitting. Sensitive ionic solutions containing chloride ions can cause stress corrosion rupture."

"What can I do about this?" Geng Zhiyuan said worriedly with the manual.

"Isn't this simple?" Zhu Lei suggested: "Isn't it okay to change to titanium, titanium is not afraid of chloride ions, don't believe it." ”

In the titanium chapter of the "Corrosion Data and Material Selection Manual", it is indeed written that titanium is not afraid of chloride corrosion. Geng Zhiyuan hesitated and said: "If we change to titanium, it will be different from the material provided by the research institute." What if they don't want to?"

"Cut ......" Zhu Lei sneered: "The drawings are made by us, if the person responsible for the problem is also me and you, they will not take the initiative to take responsibility, and they will definitely be clean." ”

Once the heat exchanger tube is pitted or stress corrosion leads to leakage, the toxic methanol will leak into the steam system to pollute the steam and boiler, resulting in economic losses and even personal injury.

Geng Zhiyuan has always been cautious in doing things, he pondered it carefully, but he still couldn't make up his mind, so he took Zhu Lei to find Xiao Yuying. Xiao Yuying said with a smile after listening to the story: "The matter of equipment materials still has to respect the opinions of equipment professionals, after all, they are experts in this regard, and they are more professional than our technology." ”

Geng Zhiyuan was relieved at this time, and hurriedly discussed with Zhu Lei to change the conditions, but he didn't notice Jia Rui on the side secretly sneering: "Boy, this time you bumped into my hands, see how I clean you up." ”

As soon as Zhu Lei was sent away, Chen Ying found him again, called him to no one and whispered: "The classmate I mentioned last time was on a business trip a while ago, and he just came back in the past two days, are you free tonight? ”

Geng Zhiyuan hesitated for a moment, nodded and said, "Okay, I'm free at night." ”

"Then set for half past six, meet at the gate of our hospital, okay?"

"Okay, I'm fine. ”

After dinner, Geng Zhiyuan simply washed up and changed into a gray suit he bought last year and put on a tie. After dressing, he looked in the mirror, and the person in the mirror was gentle and handsome, and he was a handsome guy in Yushu Linfeng.

At about six o'clock, he came to the gate early to wait. As a man, it's obligatory to be a little early when dating a girl.

Just after 6:20, Chen Ying led a tall and thin girl to the scene. This girl has short ear-length hair and a long figure, more than 1.75 meters, which is significantly taller than Chen Ying, who is 1.7 meters.

Chen Ying saw that Geng Zhiyuan was already waiting at the door, and immediately breathed a sigh of relief, and introduced to both parties: "This is my classmate Xiao Mei, who works in the Municipal Architectural Design Institute. This is my colleague Geng Zhiyuan, who is also my junior brother. ”

Xiao Mei's appearance is average, she can only be regarded as having straight eyebrows, and her pretty face without powder is facing the sky. She saw that Geng Zhiyuan was a talent, and he was much taller than herself, and she was secretly happy at the moment, after all, a tall girl like her was very restricted in finding a partner, and the range of choices was not large.

"Let's talk, I'm leaving. Chen Ying completed the matchmaker task and hurriedly said goodbye.

Geng Zhiyuan looked at Xiao Mei in front of him, feeling a little stressed. Several of his former girlfriends, Wei Xiao and Yin Xue, are all about 1.65 meters, while Xu Rong is even shorter, only a little more than 1.5 meters.

Standing close to Xiao Mei, who is more than 1.75 meters tall, Geng Zhiyuan feels that the two of them are about the same height, and even Xiao Mei is a little taller than himself. Originally, he had developed the habit of holding his girlfriend's shoulders to admire the girls' black hair, but if he was with Xiao Mei, he could only look at her waist and hug her.

"Let's go around Daxue Road?" There is no park to visit near the design institute, and the campus of the Polytechnic University on Daxue Road is full of green mountains and green waters, flowers, and the scenery is no worse than that of the park, which is a good place to talk about love.

"Well......" Although Xiao Mei has an average appearance, she has a good temperament, and she walks side by side with Geng Zhiyuan, looking very compatible.

"Do you have a lot of projects in your hospital?" Geng Zhiyuan was afraid that he would be cold, so he had nothing to say.

"It's okay, it's busy. Xiao Mei replied softly.

"You're mainly designing residential buildings?"

Xiao Mei smiled: "Sort of, there are also public buildings, such as gymnasiums, convention and exhibition centers, etc." Unlike yours, we design all civil buildings."

"We can't compare to you. Geng Zhiyuan sighed: "It's still civil construction to make money." ”

The two of them are peers in the design institute, and there are a lot of common topics at work, chatting all the way, walking to the gate of the University of Science and Technology, Geng Zhiyuan said: "Let's go in and go around, this is our alma mater." ”

"No......" Xiao Mei glanced at her watch and said, "I have to work overtime in the evening, I have to go back." ”

When they met for the first time, the girl was always a little reserved, Geng Zhiyuan didn't dare to be reluctant, left contact information with Xiao Mei, and waved goodbye at the school gate. Xiao Mei took a taxi and disappeared on the road with rolling traffic, Geng Zhiyuan turned around and walked back slowly.

Xiao Mei gave him the feeling of being like a glass of boiled water, tasteless when he drank it, and he would be thirsty if he didn't drink it, which could only solve the problem of emotional needs. Back in the office, after careful consideration, he decided to date Xiao Mei for a while before deciding whether to continue to go deeper.

At the same time, Jia Rui and Cheng Jianguo in the equipment room were having a few drinks in a small restaurant near the second dormitory of the design institute.

"Lao Cheng, do you understand what I told you?" Although Jia Rui is a good wine, it is a pity that the amount of alcohol is really not flattering, and the stomach of the two taels of white wine is already red and his ears are red, and his speech is slurred.

Cheng Jianguo was admitted to the hospital in the same year as Jia Rui and Ye Shoufeng, and the relationship between the three of them is good, and he is now the backbone of the equipment room, and the person in charge of the equipment major of the FG project.

"Hmph!" Cheng Jianguo snorted and said: "Zhu Lei is a little kid, he dares to make up his own mind, I'll go to bear him tomorrow to see if he dares to take me in his eyes?"

Jia Rui said slyly: "You can't blame Zhu Lei for this, you also understand that the equipment professional only accepts the conditions, and you can do whatever the process says." Geng Zhiyuan has to blame for changing the material. ”

"Geng Zhiyuan......" Cheng Jianguo took a sip of wine and said, "Is it the guy who made the girl's belly bigger and let her parents come to the door?"

"Yes, it's that kid, it's not a human thing. Jia Rui looked around and whispered, "This guy, he told Xiao Yuying in front of me that day...... You have to listen to the process of materials, and what do you know about equipment?"

"How dare he say that?" Cheng Jianguo said noncommittently, staring at his red eyes.

"That's ......," Jia Rui said, "This kid is crazy." ”

"Bang!" Cheng Jianguo slammed the wine glass on the table and said angrily: "I'll go to that kid tomorrow and ask, why does he look down on our equipment?"

"Look at ...... Look at ......" Jia Rui narrowed his eyes and said, "Aren't you excited?" I tell you, don't go directly to him, he won't admit it." You're so ......."

"Good idea! Great idea!" Cheng Jianguo gave a thumbs up and admired after listening: "Lao Jia, your trick is really amazing, I listen to you!"