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Chapter 126 Acids and Bases 2
Raw lacquer cut from the lacquer tree is almost not afraid of any corrosion, whether it is water, strong acid or strong alkali. Lingao does not produce lacquer trees but there are many in Guangdong. The Industrial Energy Commission imported some, and Xu Yingjie prepared a large water tank. After making it thick enough, he soaked straw ropes in it to replace asbestos ropes and water glass. But he also paid a price - even though he took full body protection, he still got "paint bites" on his hands. My fingers were swollen and I had to rest for several days.
Ji Sidei randomly picked up a jar and tried the threaded lid: "This jar is good. We need to maintain long-term production. In the future, there will be a huge demand for sulfuric acid, nitric acid, and hydrochloric acid." Ji Sidei said, " I also have an order for chemical equipment, please organize people to make it as soon as possible."
"We still have to do it," Xiao Bailang complained, "I haven't had a good night's sleep in three or four days. There are only a dozen workers in the ceramics factory. This is too much work." He took the list, which listed thirty There are multiple water jars of different sizes, as well as some other ceramics.
"To build a water tank like this, you have to make pickles."
"It has something to do with salt," Ji Situi said, "It's all used in engineering, so hurry up."
"Then please give me some overtime pay. The ceramic craftsmen here have been busy day and night recently."
"You ask Wu De for overtime pay. Where did I get the circulation coupons?" Ji Sidui was not interested in the welfare of the indigenous people. "They burn kilns in Fujian day and night. The kiln owner will give them overtime pay."
"You capitalist is too evil."
Ji Sidui interrupted his complaint: "I need this urgently, please hurry up."
After the cans were brought back, Ji Sidui built a straw shed next to the sulfuric acid plant and slept for a while. At night, after the 12 hours were up, he asked people to dig out all the firewood with iron drills, and immediately organized people to put a layer of gravel about the same size as ore into the furnace, and then put firewood into the four furnaces to light the fire.
Seeing that the fire was getting bigger, Ji Sidui asked the workers to add the best Hongji anthracite. The fire suddenly became fierce, and the entire sulfuric acid plant burst into flames.
"Okay, except for those who are watching the stove and lighting the fire, everyone else is going to have a rest. We'll start work again the day after tomorrow."
Seeing that he didn't have to worry about it now, Ji Sixui rushed to the next construction site - the caustic soda workshop.
The ammonia synthesis and combined alkali production plant can only produce soda ash. Caustic soda, which is widely used in industry, is relatively easy to prepare, and the raw material is simple-salt electrolysis. Not only can caustic soda be obtained, but many useful by-products can also be produced, including another important chemical raw material: hydrochloric acid. There is no need to install a special hydrochloric acid production line, which is the benefit of the chemical combined manufacturing method.
Even the Ministry of Light Industry has been focusing on the issue of caustic soda - which is related to the two major products of the Ministry of Light Industry: white paper and soap. Ji Sixui simply did it together this time.
"I can drive one sheep or two sheep, so I can do more work." Ji Sixui thought about walking to the caustic soda workshop. A train carrying construction materials to the caustic soda plant happened to be passing by. He trotted a few steps quickly, climbed up, and sat down on a pile of reed mats.
"Who is trying to kill the train?" shouted a man wearing a safety helmet on the tractor in front.
"You are also a train"
"It's not a train." As he spoke, the train arrived at the construction site of the caustic soda workshop, which was under construction.
Ji Sidui got off the car and saw that the man wearing a helmet turned out to be Bingfeng - it seemed that the caustic soda plant workshop must have a steel frame structure.
Sure enough, this caustic soda workshop is simple enough, but compared to the sulfuric acid workshop that is still exposed in the open air, it is still covered - the electrolysis workshop involves electrical issues and cannot be exposed to wind and rain. The entire building is a frame structure of brick columns and wooden beams. Except for a few key parts with walls, the rest of the building is open to facilitate ventilation. The precious and fragile transformers have separate transformer rooms with glass windows for easy observation.
The total area of the entire factory is approximately five hundred square meters. The floor is paved with bricks. Chang Kaishen is taking Ling Tian and several indigenous apprentices to install a transformer: convert the alternating current sent from the Bobu power station into direct current so that it can be used for electrolysis.
Ten electrolyzers are already in place. Ji Situi originally considered purchasing ready-made ones, but the weight made him give up the idea. In the end, he only purchased and prepared the core components, which were purchased in another time and space. The tank body is made locally. The square troughs are woven with steel bars and cast with cement yellow sand. Each trough is 14 meters wide, 08 meters wide and 04 meters high. The trough is lined with ceramic tiles to prevent corrosion. A barbed wire mesh is placed flatly in the tank at a distance of 01 meters from the bottom of the tank. Each trough also comes with a wooden lid, which is coated with wood tar pitch to prevent corrosion.
The heavy reinforced concrete electrolyzer is supported by a piece of hardwood board and elevated on two brick bottom brackets as an insulation measure.
Ji Sidui checked the quality of each trough to see if there were any leaks or weak tiles. It was discovered that linoleum coated with wood tar asphalt was laid between the supports as an additional measure of insulation. It's always a good idea to be careful - at 400 amps, this is no joke.
"Is this safe?" Ji Sixui looked at this simple look. I really feel uneasy.
"It's generally safe, but I can't say absolutely." Ling Tian said, "You still have to be careful when using electricity. Pay attention to wearing labor protection supplies and do a good job in safety education."
"The pressure is so heavy." Ji Situi has foreseen that the future of the chemical plant will not be peaceful. "The local law will kill people."
He turned around again and saw that a chlorine absorption tower combined with water tanks had been erected outside the house. The chlorine gas produced during electrolysis reacted with the slaked lime in the tower to obtain bleaching powder. It is a cheap, effective and widely used disinfectant.
After returning from the caustic soda workshop, I rested for a while, and the hot furnace work was finally almost over. At this time, everyone who had something to do with the chemical industry came.
"We won't sleep for two or three days in a row." Ji Sidui said and asked someone to drag out several boxes from the shed. "These are protective suits. They will be distributed to everyone first. Don't lose your mask and your glasses now."
Ji Sihui brought a lot of various labor protection supplies used in the chemical industry - there would be no room to replenish these items for a while. He brought enough wearing parts to last him ten years.
Everyone put on a full set of protective clothing, protective glasses and chemical masks. Then work started under the command of Ji Sixui.
Ji Sixui first closed the chimney's blocking plate, and then opened the converter's extraction plate. Turn on the blower. He constantly measured the thermometer at each entrance. When the inlet temperature of the first converter reached 450C, Ji Situi asked someone to open the top cover of the converter and put in quartz sand and catalyst. Then cover the top cover and apply acid-proof mud - water glass is no longer a rarity in the soda ash industry, and porcelain powder is even less so. So Ji Situi had no intention of saving at all, and he put the two top covers without hesitation. The lids are tightly sealed.
Seeing that he had sealed the top cover, Xu Yingjie and his men began to add crushed ore into the furnace. 20kg per furnace. Then close the oven door. At the same time, 98% concentrated sulfuric acid obtained from the Planning Commission warehouse is added to the absorption tower as a primer to start the acid cycle.
Ji Sidui tested the concentration of sulfur dioxide at the outlet of the first converter. It was close to 70 at this time. He knew that the preparation of sulfuric acid had been basically successful. After the absorption tower starts the acid cycle, 15 liters of acid are sprayed every ten seconds. The tower temperature had risen to 60c, and he asked people to turn on the water cooling.
In this way, one furnace is charged with ore every hour, and the four furnaces are cyclically charged and slag is discharged. This is how the indigenous sulfuric acid plant is operating. As long as stable feeding and heating are maintained, a workshop of this size can operate 345 days a year and produce 98% of concentrated sulfuric acid.
Ji Situi and others had no time to celebrate this great moment, but were busy explaining the key points of production to the indigenous workers while working - on-site observation is more intuitive than simple lectures and adapts to the cultural level of the indigenous workers.
Of course, once it is running, the furnace will not be shut down unless it is for maintenance or other important matters - after all, heating the furnace takes a long time and consumes a lot of fuel, which is not economical.
However, Ji Situi only had 20 tons of pyrite in total, which would be consumed within a month if production was at full speed. When the pyrite will be shipped again depends on how fast the shipbuilding speed is - but by this time, the sulfuric acid for coal coking should have been mass-produced. Sulfuric acid production here would not be too important. Ji Situi is already considering that if the coal chemical plant has enough sulfuric acid, the equipment here can be used to produce ammonium sulfate from pyrite as fertilizer.
The first batch of 98% concentrated sulfuric acid was produced. They were carefully packed into custom-made jars and sealed. The outside of the lid is then closed with plaster of paris plaster. It was covered with a clay raspberry to protect it from rain.
"Whether this method will work or not?" Xu Yingjie is used to seeing modern industrial packaging. Now at first glance, when he saw a clay pot that looked like rice wine, he felt incredible and had a very unreliable feeling.
"Sulfuric acid has been produced for two hundred years. Don't worry, it was always packaged like this in the past." Ji Situi said.
After the cans are labeled with "98 concentrated sulfuric acid", production date, and production location, they are carefully packed into special wooden boxes made by the woodworking factory, one or two per box. Straw ropes were wrapped around the cans in the box to act as shock absorbers. Then they are loaded onto a train and transported to a chemical hazardous materials warehouse.
After the initial victory in the sulfuric acid battle, Ji Situi led the indigenous workers to teach while producing for more than ten days, until the indigenous workers basically mastered the production technology and processes, and memorized all safety production regulations. ,.
