How sulfuric acid is made and how to make sulfuric acid

Industrial Method. The raw materials for the production of sulfuric acid include sulfur, pyrite, non-ferrous metal smelting flue gas, gypsum, hydrogen sulfide, sulfur dioxide and waste sulfuric acid. Sulfur, pyrite and smelting flue gas are the three main raw materials.

1.Sulfur dioxide is produced by burning sulfur or treating pyrite at high temperatures.

S+O2 = (ignition) SO2

4FES2 + 11O2 = (high temperature) 8SO2 + 2FE2O3H2SO4 industrial production equipment.

2.Oxidation to sulfur trioxide on contact.

2SO2+O2=( ,V2O5)2SO3 (the reaction is reversible).

3.Absorbed with sulfuric acid.

SO3 + H2SO4 = H2S2O7 (pyrosulfuric acid).

4.Add water. h2s2o7+h2o=2h2so4

Purification process. Industrial concentrated sulfuric acid can be distilled to obtain commercial sulfuric acid with a concentration of 95 98

Laboratory sulfuric acid method.

It can be strengthened with heat, condensed with ice-water mixture + U-shaped tube, and SO2 can be absorbed with NaOH, and the theoretically available H2SO4 can be obtained

The key lies in exhaust gas absorption.

1. Sulfuric acid production method for concentrating low-concentration sulfur dioxide gas by amino acid method.

2. An integrated process that uses on-site regenerated sulfuric acid as a catalyst.

3. Utilization of sulfuric acid waste liquid in oxalic acid production.

4. Purification and concentration process of waste sulfuric acid obtained from the nitration of mixed acid of aromatic compounds.

5. Regeneration method of waste sulfuric acid solution discharged from titanium oxide production process.

6. Method for separating organophosphorus compounds and other impurities from dilute sulfuric acid.

7. Method for preparing sulfuric acid from sulfur-containing by-products of 2-hydroxy-4-methylthiobutyric acid (MHA) process.

8. Catalytic oxidation of ** method containing organic waste sulfuric acid.

9. Sulfuric acid production device for batteries.

10. Liquid phase conversion method from sulfur dioxide source to sulfuric acid.

11. Method for preparing sulfuric acid by roasting sulfur in boiling furnace.

12. Utilization of dilute acid in the boiling furnace blended sulfur production device.

13. Production method of high-concentration sulfur dioxide gas with three turns and three absorption of sulfuric acid.

14. Wear-resistant shaft sleeve for high-temperature concentrated sulfuric acid submerged pump.

15. High-efficiency anodic protection shell and tube type concentrated sulfuric acid cooler.

16. Energy-saving refining sulfuric acid furnace device.

17. Method for preparing sulfuric acid by incineration of refined benzene regeneration acid.

18. Method and device for using waste sulfuric acid regeneration liquid.

19. The use of acid gas containing hydrogen sulfide and sulfur combined to produce high-concentration sulfuric acid.

20. Use acid gas containing hydrogen sulfide to produce high-concentration sulfuric acid.

How is sulfuric acid formed, and what happens when water is added to concentrated sulfuric acid.

There are many square combustion carrying methods and chemical equations for the preparation of sulfuric acid in <> laboratory, and here are two methods that are easier to prepare.

Method 1: 1. Prepare the experimental equipment such as sulfur, water, crucible, alcohol lamp, test tube, beaker, tweezers, catheter and so on;

2. Put sulfur on the crucible for combustion to obtain gas sulfur dioxide;

2. The sulfur dioxide produced is introduced into the wheel water in the beaker through a thin catheter to absorb it to form sulfurous acid;

3. Add hydrogen peroxide to nitrous acid to oxidize it and then obtain sulfuric acid.

Method 2: 1. Prepare the experimental equipment such as copper sulfate pentahydrate, crypto water, crucible, beaker, catheter, alcohol lamp and so on;

2. Heat and decompose copper sulfate pentahydrate at high temperature on the crucible, and a small amount of sulfur trioxide can be obtained after decomposition;

3. Introduce sulfur trioxide into a beaker filled with water with a catheter, and the product obtained after absorbing sulfur trioxide with water is sulfuric acid.

The method of making sulfuric acid is as follows:1. You can use FeSO·7HO to strengthen the heat, condense it with a U-shaped tube with ice-water mixture, and absorb SO with NaOH, and the theoretically available Hso can be obtained. The key lies in exhaust gas absorption.

2. Sulfur dioxide gas can be passed into hydrogen peroxide to produce sulfuric acid, and the proportion of this method is low.

3. Another lesser-known method is to add molar concentration of hydrochloric acid to metabisulfite (SO-), and then inject the resulting gas into nitric acid, which will release brown and red gas, and when no gas is generated, it means that the reaction is completed.

1. You can use FeSO·7HO to strengthen the heat, condense it with a U-shaped tube with ice-water mixture, and absorb SO with NaOH, and the theoretically available Hso can be obtained. The key lies in exhaust gas absorption.

2. Sulfur dioxide gas can be passed into hydrogen peroxide to produce sulfuric acid, and the proportion of this method is low.

3. Another little-known method is to add molar concentration of hydrochloric acid to metabisulfite (SO-), and then inject the resulting gas into nitric acid, which will release brown and red gas, and when there is no gas generated, it means that the reaction is completed.

Sulfuric acid is produced by the oxidation of sulfur.

Sulfuric acid is a commonly used chemical, and a common method for preparing sulfuric acid is called the oilstone method.

1. Preparation of raw materials: It is necessary to prepare sulfur ore (an ore containing a higher content of sulfur), air and water.

2. Refining sulfuric acid gas: First, the sulfur ore is crushed and added to the high-temperature furnace, and enough air is added to oxidize it. This process will produce sulfur dioxide (SO2) gas. Sulfur dioxide is cooled and collected through a condensation process.

3. Sulfur dioxide oxide: the collected sulfur dioxide gas is passed into the reaction chamber and reacted with oxygen to obtain sulfur trioxide (SO3).

4. Synthesis of sulfuric acid: sulfur trioxide is reacted with water to form sulfuric acid (H2SO4). This reaction is called the water absorption reaction, and it is a violently exothermic reaction. Therefore, it is necessary to operate carefully when carrying out the reaction and control the temperature of the reaction.

It is important to note that the preparation of sulfuric acid is a complex process that involves operations such as high temperatures and chemical reactions. When carrying out preparation, it is easy to produce toxic gases and harmful substances, so it is necessary to strictly follow the relevant safety operating procedures and carry out under the guidance of professionals.

In addition to the oil stone method, there are other ways to prepare sulfuric acid, such as iron-copper method, oxidized sulfuric acid method, etc. The specific preparation method will vary according to the actual needs and conditions. If you have a specific purpose or condition that can provide more details, I can give more specifics.

Precautions when preparing sulfuric acid:

1. Safe operation: The preparation of sulfuric acid involves high temperature and chemical reactions, so the safety operation procedures must be strictly observed. Wear appropriate protective equipment such as a lab coat, goggles, gloves, and a chemical mask.

Ensure that the operating environment is well ventilated to avoid the accumulation of toxic gases.

2. Corrosiveness: Sulfuric acid is a strong acid with strong corrosiveness. Avoid contact with **, eyes, or other body parts. In case of accidental contact, rinse immediately with plenty of water and seek medical assistance.

3. Temperature control: In the process of preparing sulfuric acid, it is necessary to control the temperature of the reaction. The water absorption reaction is a violently exothermic reaction, and if the temperature is too high, it can lead to dangerous situations.

Therefore, the temperature during the reaction should be carefully controlled and the recommendations in the operating manual should be followed.

4. Gas treatment: In the oil stone method, sulfur dioxide is produced by sulfur oxide ore. Pure sulfur dioxide is a toxic gas that must be disposed of properly. Ensure proper ventilation systems are in place and that equipment that collects and treats sulphur dioxide gas is functioning properly.

The main method of preparing sulfuric acid is through the oxidation reaction of sulfur. The following is a common method of preparing sulfuric acid, known as the contact method:

1.Raw material preparation: Prepare sulfur (S), concentrated nitric acid (HNO3), concentrated sulfuric acid (H2SO4).

2.Oxidation reaction: In the reactor, sulfur is mixed with concentrated nitric acid. The reactor is heated to the appropriate temperature (typically 450-500) to facilitate the reaction. The reaction equation is as follows:

s + 2hno3 h2so4 + 2no2 + h2o

In this reaction, sulfur is oxidized to sulfuric acid, producing nitrogen dioxide and water.

3.Absorption of nitrogen dioxide: The nitrogen dioxide produced is introduced into the absorption tower and reacts with concentrated sulfuric acid to convert it into nitric acid. This process is known as the absorption step.

4.Concentration: Through an evaporation and cooling process, the resulting nitric acid is concentrated into concentrated sulfuric acid. This process is known as the enrichment step.

Please note that the preparation of sulfuric acid is a complex chemical process and requires operation under appropriate equipment and conditions. Ensure that proper safe handling and operating guidelines are followed when performing any chemical experiments or preparation processes.

1.Dry preparation of sulfuric acid: At high temperatures, sulfur reacts with oxygen to form sulfur dioxide, then reacts with oxygen in the air to form sulfur trioxide, and finally reacts with water to form sulfuric acid.

Reaction Equation:

s + o2 so2

2 so2 + o2 2 so3

so3 + h2o h2so4

2.Wet preparation of sulfuric acid: This method usually uses pure sulfur, copper, and air to prepare vertical sulfuric acid.

First, sulfur is heated and reacts with oxygen in the air to produce sulfur dioxide. Sulfur dioxide then reacts with water to form sulfurous acid. Finally, sulfurous acid is oxidized to sulfuric acid.

Reaction Equation:

s + o2 so2

so2 + h2o h2so3

2 h2so3 + o2 2 h2so4

Categories: Education, Science, >> Science & Technology.

Problem description: It is better to use materials from life.

Analysis: I know a way:

Heating of green alum (ferrous sulfate heptahydrate FeSO4·7H2O) reaction conditions: heating.

FeSO4·7H2O===Fe2O3+SO2 (gas symbol)+SO3+14H2O (1).

Too lazy to match the ......）

Then the resulting mixture of sulfur dioxide and sulfur trioxide is introduced into the water, (a) SO3 + H2O = H2SO4 (2).

At this time, most of the solution is sulfuric acid, of course, there is also a small part of sulfurous acid, which can be converted into sulfuric acid by continuing oxidation.

But this method is polluting the environment!

In fact, the reaction in (1) should already have an oily liquid (sulfuric acid), and the step of (a) may not be necessary, but the reaction in (2) must occur.