The core equipment of an oil refinery is the distillation unit.
After injecting crude oil into the distillation unit, the preheated and desalinated crude oil can be separated using the differences in boiling points and the higher temperatures at the bottom of the distillation tower.
The distillation unit can divide crude oil into light fractions such as liquefied petroleum gas, gasoline, and naphtha; intermediate fractions like kerosene and diesel; and heavy fractions and residual oil, including heavy fuel oil, lubricating oil, wax, and asphalt.
After the initial separation of crude oil, these products need to be sent to catalytic units, catalytic cracking units, catalytic reforming units, and catalytic hydrogenation units for further processing to enhance product quality.
However, Sun Renqing's small refinery can only process a maximum of one hundred tons of crude oil per day, so he only purchased equipment for fuel refining.
As for the other industrial raw materials separated by the distillation unit, Sun Renqing sells them at low prices to large refineries capable of further processing.
If conditions allowed, Xu Zhengyang also wanted to build a comprehensive refinery in his shelter that could process and produce all petroleum products in one go.
But due to the limited space in the shelter, Xu Zhengyang could only complete the current tasks before planning for future development.
...
More than an hour later.
Under Da Bai's coordination, three Engineering Robots had already dismantled the core equipment of the refinery.
However, these devices were somewhat large.
In two days, Xu Zhengyang made six round trips between Lu Province and Bai City to bring all the equipment back to his shelter.
With the last unloading completed, Da Bai coordinated all the Engineering Robots to reinstall the equipment in the refinery within his shelter.
A series of system notifications finally appeared before Xu Zhengyang: [Main Quest: Oil Refinery (Completed)]
[Reward: Dimensional Pocket Upgrade Device IV]
...
[Dimensional Pocket Upgrade Device IV]
[Effect: Increases the space of the Dimensional Space Pocket to a spherical space with a diameter of 100 meters]
(Note: Effect activates upon placing in the Dimensional Space Pocket) "Awesome!"
Seeing the Level IV Dimensional Pocket Upgrade Device, Xu Zhengyang couldn't help but exclaim.
A spherical space with a diameter of one hundred meters has a volume of about 523,599 cubic meters! Feeling the upgraded Dimensional Space Pocket, Xu Zhengyang sighed, "If my Dimensional Space Pocket had this much space before, I could have moved all the refinery equipment back in at most two trips, saving so much time!"
As he spoke, Xu Zhengyang first used the shelter's Optical Camouflage Function to hide the refinery built next to the thermal power plant.
Then he opened his task list to check the latest main quest:
[Main Quest: Water Resource Treatment Center (In Progress)]
[In the apocalypse, clean water sources are an absolute necessity for survival. Even deep underground water can be contaminated. For your drinking safety, please build a water resource treatment center within the shelter.]
[Task Objective: Build a water resource treatment center in the shelter (the water treatment plant must have an area of no less than 500 square meters; the quality of domestic water must be pure water, with an output of no less than 100 tons/day; the quality of industrial water must be municipal tap water, with an output of no less than 1000 tons/day)]
[Task Reward: Building Effect · Leak-proof]
After reading the task details, Xu Zhengyang immediately said to Da Bai, "Da Bai, partition a 500-square-meter room in the shelter. Then, make sure to install the highest standard waterproofing in that room!"
"Understood, Master."
Da Bai responded, and the Engineering Robots immediately began their work.
*After Da Bai started working, Xu Zhengyang didn't idle either; he quickly went to the computer to search for information related to water treatment plants.
Thanks to the strong advantages of China's entire industrial chain, various water resource treatment equipment and consumables are very easy to purchase. Xu Zhengyang didn't even need to shop online; he could buy all the necessary equipment directly in Bai City.
So, while the Engineering Robots were still working in the shelter, Xu Zhengyang drove out to buy various consumables and equipment for water resource treatment.
...
Water treatment has become a quite mature industry, so various equipment and consumables are everywhere, and the parameters are quite competitive.
With Da Bai's filtering, Xu Zhengyang quickly bought all the necessary equipment and consumables for building the water treatment plant in Mechanical City, solving part of the industrial water task.
...
As for the pure water needed for the domestic water part of this task, the equipment was easy to buy, but some consumables were a bit troublesome.
The core consumable for producing pure water is the RO membrane, also known as the reverse osmosis membrane.
The flow of water generally moves from low concentration to high concentration, but once pressure is applied to the water, it will flow from high concentration to low concentration, which is the principle of reverse osmosis.
The pore size of the RO membrane is one-millionth of a hair's width (0.0001 microns).
Because of this, as long as an RO membrane is added to the filtration equipment, only water molecules and some mineral ions can pass through, meeting the standards for pure water!
An industrial-grade RO membrane can filter nearly a million liters of pure water.
However, this item is a consumable and will eventually run out.
In the post-apocalyptic world, Xu Zhengyang might not be able to find this item, so for his drinking safety, he decided to buy one hundred thousand rolls of industrial-grade RO membranes! Upon hearing this quantity, the boss was stunned, incredulously asking Xu Zhengyang, "How... how many?"
"One hundred thousand."
Xu Zhengyang said, directly switching his phone to the online banking app, telling the boss, "I'll pay the deposit right now; please ship it quickly! As soon as it arrives, I'll pay the balance immediately!"
"Okay, okay, okay!"
The boss was so excited he could hardly close his mouth, fearing Xu Zhengyang would change his mind, and hurriedly said, "I'll contact the manufacturer for expedited shipping right away!"
...
After purchasing the necessary items, Xu Zhengyang had no intention of lingering there and drove back to the shelter.
Passing through the High-tech Zone, the several large commercial areas here were once the most prosperous and lively places in Bai City.
However, after two zombie outbreaks in a short time, the area lost all its popularity. Even Da Bai noted that there were hardly any people on the streets, which felt desolate.
Just as Xu Zhengyang was driving through the High-tech Zone, he suddenly sensed a completely unmasked malice sweeping over him! At the same time, a series of system notifications appeared before Xu Zhengyang: [Emergency Time-limited Quest: Impostor (In Progress)]
[An impostor has appeared near your shelter; it can deceive human senses and infiltrate human gatherings to spread the Blood Plague! To prevent the impostor from creating a new Zombie Horde around your shelter, please eliminate it immediately!]
[Task Objective: Kill the impostor]
[Task Time Limit: 23 hours, 59 minutes, 58 seconds]
[Task Reward: Power of Disguise]
Thank you to [SCP-862] for the 588 reading coins!
Thank you to [Book Friend 140218091139827] for the 100 Qidian coins!
Thanks to both bosses for their generous support! Tonight, I have an unavoidable social engagement and will be back a bit late.
I'll update three chapters first, and the remaining two chapters will be posted after I finish writing them. The timing might be a bit late, so I suggest everyone check back tomorrow.
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