What material should be used for the valve of caustic soda liquid soda waste soda?

304 stainless steel, corrosion-resistant, iron is not good.

I guess it's corrosion-resistant plastic.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

304 material is OK, caustic soda, liquid soda, waste soda valves in practical application most of the use of cast steel valves or cast iron valves.

Stainless steel is OK, but it is better to be nickel, but the price is different.

The intuitive judgment should be trivalent iron ions, and the green color in the alkali residue should be the color of ferrous ions, which has been oxidized by nitric acid to become soluble ferric nitrate, which should be the product after your final concentration and crystallization.

Sodium hydroxide is a strong alkali, its corrosive ability is similar to that of sulfuric acid, and it is "luring wolves into the room" to remove sulfuric acid, which can be removed, but it is still very corrosive and dangerous. In contrast, the compound alkali is a weak alkali, which can remove sulfuric acid without danger, and the price is much cheaper than sodium hydroxide. The key here is that sodium hydroxide is a corrosive dangerous good, remember.

The role of complex bases.

As a strong alkaline agent to neutralize acidic wastewater or heavy metal wastewater, so that acidic wastewater becomes neutral.

Absorb sulfur dioxide in boiler flue gas, so that the sulfur content of the discharged flue gas meets environmental protection standards.

It can play a coagulant role in colloidal particles in wastewater, and act as a particle nuclear weight gainer to accelerate the separation of insoluble substances.

It can effectively remove anions such as phosphate, sulfate and fluoride ions.

It can destroy the binding of some metal ions by complexing agents or chelating agents such as sulfamate.

By adjusting the pH value, it has the effect of destabilizing and demulsifying the emulsion wastewater.

Compared with the sodium hydroxide lye with the content of three percent, the ** per ton of sodium hydroxide lye is equivalent to each ton of composite alkali powder, but from the treatment effect, the first of the composite alkali powder is less than half of the sodium hydroxide lye, and it is better than the sodium hydroxide alkali solution from the effect of coagulation and decolorization, and it is the preferred alkaline neutralizing agent recognized by the world. The difference between compound alkali and sodium hydroxide is expected to be adopted.

1. Calcium oxide or compound alkali is generally used to neutralize acidic wastewater, and sodium hydroxide cannot be used for the following reasons:

Sodium hydroxide is highly corrosive and too alkaline, which is easy to cause local alkalinity; The solubility of hydrated lime calcium oxide in water is very small, so even if it is added, it will not cause alkalinization of wastewater;

Hydrated lime is less expensive than sodium hydroxide.

2. Sodium hydroxide and its basic introduction. Sodium hydroxide, with the chemical formula NaOH, commonly known as caustic soda, caustic soda, caustic soda, is a strong alkali with strong corrosiveness, generally in the form of flakes or granules, soluble in water (exothermic when dissolved in water) and forms an alkaline solution, and deliquescent, easy to absorb water vapor and carbon dioxide in the air. NaOH is one of the essential chemicals in chemical laboratories and one of the common chemicals.

Pure products are colorless and transparent crystals. Density. Melting point.

Boiling point 1390 . Industrial products contain small amounts of sodium chloride and sodium carbonate, which are white opaque crystals. There are blocks, sheets, granules and rods, etc.

Sodium hydroxide can be used as an alkaline cleaning agent in water treatment, soluble in ethanol and glycerol; Insoluble in propanol, ether. It also has a corrosive effect on sodium carbon at high temperatures. It disproportionates with halogens such as chlorine, bromine, and iodine.

It neutralizes with acids to form salt and water.

Sodium hydroxide is not used to neutralize acidic wastewater because sodium hydroxide is a strong alkali, and it is easy to form strong alkaline wastewater in excess when used.

Sodium hydroxide is too alkaline, corrosives the container, and is too dangerous for people.

Let the mass of sodium hydroxide be x

naoh+hcl=nacl+h2o

x 5kg×

x5kg x=2kg, the mass fraction of the solute in the sulfuric acid solution used is yh2so42naoh=na2

so42h2o

5kg×y 2kg

5kg×y2kgy=

Therefore, c

1 All the landlords themselves are right, that is, kilograms, not tons. However, the actual amount will be much larger, because the acidity of wastewater is not all caused by strong acid, in fact, it is often caused by weak acid, with different wastewater**, its alkali consumption is different. Therefore, in actual operation, it is necessary to use sampling tests and re-feed according to the test results.

The density of wastewater is calculated according to the density of water: the mass of flake alkali to be required is: tons.

The ion concentration of [H+] is 10e-4,578*1000*10-4=

Kilograms = tons.