Liang Guangyuan's office was almost full of smokers, each person had a cigarette to compete with the living immortals, and several people took turns swallowing clouds and spitting fog, making the office full of smoke.

Liang Guangyuan is a veteran smoker, his teeth are scorched, his skin is rough, and he dresses casually, so he looks like he is in his 50s, but in fact he is only a year older than Xia Su at 34 years old.

At this time, Liang Guangyuan was staring intently at the computer screen and playing a small game of digging mines, Geng Zhiyuan walked up to him without noticing at all, and was still busy digging mines. The Pentium computer of more than 20,000 yuan became a game console in his hands, and the cost of playing this game was a bit large.

"Liang Gong, Director Yang arranged for me to go to Haibin County for the construction service of the nitric acid project, and he asked me to find you. Geng Zhiyuan saw that he was having a good time, and after waiting for a while, he saw that he was still fighting, so he had to interrupt.

"Oh...... Oh...... Excuse me. Liang Guangyuan turned off the game with a smile, took a deep breath of cigarette and spit out a few smoke rings, and said leisurely: "You go to the factory to find Chen Jian Chen, director Chen, he is responsible for dealing with our design institute, you buy a ticket and tell me, I will ask him to send a car to pick you up." ”

"Okay, where did I go to live?" Geng Zhiyuan was dizzy from the heavy smell of smoke in the room, and just wanted to hurry up and go out to breathe.

"Live in their guest house, right in their town, can take a shower and have a TV, the condition is not bad. Liang Guangyuan took a piece of paper from the table and said: "This is the phone number of the person in charge of each major of the nitric acid project. There are drawings on site, so you don't need to bring them, just bring a stamped design change order. ”

"Hmm. I'm going to buy a ticket right now. Geng Zhiyuan took the paper and took a look, and the person in charge of the process was Wang Ping.

"You go there and go to the site more often, and you have time to study carefully and get familiar with the process. We still have several medium-pressure nitric acid projects behind us, and we will dry them quickly when the time comes. Liang Guangyuan didn't have his own students, and recently heard Wang Ping talk about Geng Zhiyuan, saying that this child is down-to-earth and stable, and he is a good seedling for design. So I have the heart to envelop him, so that I can be my helper in the future.

Geng Zhiyuan was really not interested in his sloppy image, and did not take his words to heart, and politely replied: "Okay, thank you Liang Gong." ”

At half past eleven o'clock at noon the next day, Geng Zhiyuan walked out of Liangcheng Station alone with a leatherette travel bag on his back. Less than ten days after his last absence, he returned to his hometown.

When he came, he originally wanted to say hello to Lu Yi and tell others, but then he thought that he was only one side of the relationship with other girls, and the relationship was far from that point, and finally Geng Zhiyuan dispelled this slightly abrupt thought.

A tall and burly young man at the exit of the station held a piece of white paper with the words "Geng Gong of the Design Institute" written on it, and it seemed that nine times out of ten he was the person who picked up the station from the fertilizer factory. Geng Zhiyuan stepped forward head-on and nodded: "Hello, I am Geng Zhiyuan of the Provincial Chemical Design Institute." ”

The factory arranged to pick up the station was Sun Daqi, deputy director of the nitric acid workshop, who was a little stunned when he saw Geng Zhiyuan so young: "Geng Gong is so young, I really didn't expect it." ”

"I just graduated, please advise. Geng Zhiyuan knows that a person's technical level cannot be pretended to be in front of his peers, so it is better to tell each other frankly as soon as they meet, and he will be laughed at in the future.

Sun Daqi saw that Geng Zhiyuan was a real person, and said happily: "I am Sun Daqi of the nitric acid workshop, I don't dare to advise, let's learn from each other." ”

The two exchanged a few more pleasantries, and Sun Daqi led him to the parking lot and got into a square-headed Beijing Grand Cherokee.

"Let's go to the guest house for lunch first, and after dinner, open a room to rest. I'll pick you up again in the afternoon and take you to the factory. Sun Daqi briefly said the itinerary.

"Okay, no problem. Geng Zhiyuan is not a picky person, and he is very satisfied with having a clean place to eat and live.

It is about 20 kilometers from the railway station to the hometown town where the fertilizer plant is located, and it takes 40 or 50 minutes to drive. Geng Zhiyuan looked at the familiar street scene flashing outside the car window, and said secretly in his heart: "It's a business to come back this time, don't tell your family first, your parents in the province are worried." ”

The Fertilizer Factory Guest House is located in the living area of the fertilizer factory in the town, with two four-storey buildings facing each other from north to south, standing very conspicuous in the small and simple town, and it is also the only decent high-end hotel in the town.

Sun Daqi and the driver accompanied Geng Zhiyuan to have a simple lunch in the restaurant, and helped with the formalities to open a standard room. Seeing that the time was close to two o'clock, Geng Zhiyuan took the initiative to give up his rest and followed Sun Daqi into the fertilizer factory.

Facing the main entrance, the office building of the fertilizer plant is a four-storey brick and concrete building with an old-fashioned layout from the 70s. Sun Daqi led him to the office on the second floor and found Chen Jian, the deputy director in charge of the nitric acid project. Chen Jian is in his thirties, not tall, wearing a pair of gold-rimmed glasses, with a gentle temperament, and he looks like a college student.

After the two shook hands and exchanged a few words, Chen Jian grabbed the phone and said, "I called Mr. Zhang, and Geng Gong will follow him in the future." ”

"Zhang is always the deputy chief engineer in charge of the process in our factory. Sun Daqi quietly explained to Geng Zhiyuan.

Not long after Jian Chen put down the phone, an old comrade with a dark face and gray hair pushed open the door and broke into the office. This old comrade looked to be fifty or sixty years old, wearing a clean old overalls, with a straight waist and a thin figure, and a pair of small eyes that were bright.

"Lao Zhang, this is Geng Gong of the Design Institute, he came to our factory as a construction service representative for the nitric acid project, and he will follow you in the future, and you arrange him. Chen Jian introduced.

"Oh, Geng Gong, welcome, welcome!" Lao Zhang did not dislike Geng Zhiyuan's youth, but grabbed his hand with a smile and shook it vigorously.

Lao Zhang's hand was very strong, Geng Zhiyuan only felt that his hand was being clenched, and he couldn't help grinning slightly, and said secretly: "Good guy, is this to give me a dismount?"

"My name is Zhang Shulin, you can call me Lao Zhang, you don't have to shout anything. Zhang Shulin said briskly.

I couldn't figure out the situation when we first met, Geng Zhiyuan didn't dare to make a mistake, and said modestly: "Then how can I do it?" I'm a junior, let's call you Mr. Zhang." ”

"Okay. Xiao Geng is so polite, then my old Zhang can't bully young people. Zhang Shulin laughed, waved his hand and said, "Let's go, go to my office to meet everyone." ”

Zhang Shulin's chief engineer's office is located at the east end of the second floor, and a large office is more than 50 square meters, with six or seven desks in it. There were five or six people in the room, some of them were reading drawings, some were drinking tea, and some were chatting together.

Seeing Zhang Shulin leading a strange young man in, everyone stopped talking and the work in their hands, and turned their eyes over.

"This is Geng Gong of the Provincial Chemical Design Institute, who came to us to be the on-site construction representative of the nitric acid project. Zhang Shulin pointed to Geng Zhiyuan and introduced.

Geng Zhiyuan hurriedly nodded to everyone: "Hello! I'm Geng Zhiyuan, please take care of me." ”

"I'll introduce you. Zhang Shulin pulled him and pointed to the chief engineer office and introduced them one by one: "This is Mr. Liu of the equipment major, this is Mr. Zhao of the electrical major, this is Mr. Wang of the civil engineering major, this is the general manager of the instrument major, and the female comrade is the general manager of Li who is in charge of us." ”

Before the words fell, the middle-aged woman known as Mr. Li pretended to be angry and said: "Don't listen to Lao Zhang's nonsense, my name is Li Ying, I am a clerk of the Chief Engineer's Office, Xiao Geng will ask me if he needs tea, pen and paper." ”

"Sister Li, I'm sorry for you. Geng Zhiyuan was a little face blind, and he was a little confused when he saw so many people at once, and he couldn't tell which one was which one for a while. Only this Li Ying is the only lesbian, so she can't recognize it well.

"Xiao Geng just sit here, this seat is empty and no one. Zhang Shulin pointed to a table against the door.

There was wind at the door, and the cold didn't say there was any privacy, so no one wanted to sit there. Geng Zhiyuan only came here to work temporarily, so he didn't care about this position, and sat down after seeing that the tables and chairs were clean.

"There are all kinds of professional drawings here, so if you need to see them, you can get them. Zhang Shulin opened a cabinet against the wall and said.

"Xiao Geng, I have tea and boiling water here, can I have a cup of tea?" Li Ying said enthusiastically.

Zhang Shulin and Li Ying's amiable attitude towards him made Geng Zhiyuan secretly sigh that he was lucky, and it was rare to meet a manufacturer who was easy to deal with when he was a construction service representative for the first time.

The manufacturer is easy to deal with, it is easy to discuss when something happens, and it can be scolded less, which is definitely a blessing for the construction service representative.

In the afternoon, Zhang Shulin led Geng Zhiyuan to inspect the scene.

The civil works of each plant of the nitric acid project have been basically completed, and the remaining civil works are only the pipe frame foundation and anti-corrosion ground.

Large-scale equipment such as three-in-one units, nitric acid absorption towers, and concentration towers have also been installed in place, and pipeline installation has just begun.

"You must be familiar with it first, and you must pay attention to safety when you come to the site. Zhang Shulin admonished.

"Well, okay. Geng Zhiyuan honestly followed behind Lao Zhang, and went to the ammonia oxidation plant and the concentrated nitric acid plant in turn to check one by one.

"This is nitric acid by full medium pressure, and the oxidation and absorption pressures are three and a half kilograms (note). After the two absorption towers absorb the acid, the concentration is about 45%, and then it is concentrated to more than 98% after dehydration distillation. Zhang Shulin learned that Geng Zhiyuan had never done nitric acid design, and he was a recent graduate, so he must have a black eye, so he led him to teach patiently.

"Well, Mr. Zhang, is there any information related to nitric acid for me to study?" Geng Zhiyuan's engineering experience is basically zero, and the courses taught in the university are biased towards science, which is far from actual engineering, and it can almost be said that he is out of touch, and he has to pick up books and re-study after joining the work.

"Oh, the information...... Zhang Shulin thought for a while and said, "I have a nitric acid design manual, you can take it and take a look." ”

"Nitric acid design manual? Great, thank you, Mr. Zhang. Geng Zhiyuan said with sincere gratitude.

Zhang Shulin has done more than 30 years of technical work, from the bottom of his heart like to study the young people of technology, immediately encouraged: "On the spot can combine the drawings and the real thing, it is definitely more impressive than staying in the design institute, learn faster, if you can learn here for a few months with peace of mind, and understand the medium pressure nitric acid technology, the design level will be greatly improved." ”

"Well, you're right, thank you, Mr. Zhang!" Geng Zhiyuan nodded gratefully.

Note: Kilogram is the unit of engineering pressure, and three and a half kilograms is equivalent to 0.35MP of gauge pressure.