What is ammonia desulfurization? What is the principle of ammonia desulfurization?

1. The desulfurization tower is not easy to scale, because ammonia has higher reactivity, and ammonium sulfate has very soluble chemical characteristics, so the ammonia desulfurization system is not easy to produce scaling.

2 Adaptability of ammonia method to sulfur content in coal Ammonia desulfurization has a wide adaptability to sulfur content in coal, and can be adapted to the desulfurization of low, medium and high sulfur coal types, especially suitable for the desulfurization of medium and high sulfur coal. When the limestone-gypsum method is used, the higher the sulfur content of the coal, the greater the limestone dosage, and the higher the cost. When the ammonia method is used, especially when the waste ammonia water is used as the desulfurization absorbent, due to the higher value of the desulfurization by-product, the higher the sulfur content in the coal, the larger the output of ammonium sulfate, the by-product of desulfurization, and the more economical it is.

3 No secondary pollution: ammonia is the raw material for the production of chemical fertilizers. Using ammonia as raw material, realizing flue gas desulfurization, producing chemical fertilizers, not consuming new natural resources, not producing new wastes and pollutants, turning waste into treasure, turning harm into profit, and green production technology, will produce obvious environmental, economic and social benefits. Therefore, there is a clear difference between the ammonia method and the calcium method.

The ammonia method belongs to the ** method, and the calcium method belongs to the discarding method. The disadvantage of the discarding method is that it consumes new natural resources, generates new waste and pollutes, and has obvious secondary environmental problems.

4. The system is simple, the equipment is small, the energy consumption is low, ammonia is a good alkaline absorbent, from the absorption chemical mechanism, the absorption of SO2 is an acid-base neutralization reaction, the stronger the alkalinity of the absorbent, the more conducive to absorption, the alkalinity of ammonia is stronger than that of calcium-based absorbent; Moreover, from the analysis of the physical mechanism of absorption, the absorption of SO2 by calcium-based absorbent is a gas-solid reaction, with slow reaction rate, incomplete reaction, and low utilization rate of absorbent, which requires a large amount of equipment and energy consumption for grinding, atomization, and circulation to improve the utilization rate of absorbent. The SO2 of ammonia absorption flue gas is a gas-liquid reaction, with fast reaction speed, complete reaction and high utilization rate of absorbent. It can achieve high desulfurization efficiency, and at the same time, compared with the calcium-based desulfurization process, the system is simple, the equipment is small, and the energy consumption is low. In addition, its desulfurization by-product ammonium sulfate is an agricultural fertilizer, and the sales revenue of ammonium sulfate can offset the cost of absorbent, and even the entire operating cost, especially for enterprises that produce liquid ammonia or waste ammonia water as their own by-products, they can use liquid ammonia or waste ammonia as a desulfurization absorbent to achieve the purpose of treating waste gas with wastewater, and the sales revenue of by-products can also bring certain economic benefits to the desulfurization device.

Summary. To quote a netizen: There is usually a higher content of SO2 in industrial waste gas, which passes ammonia, NH3+SO2+H2O==NH4HSO NH3+SO2+H2O==(NH4)2SO3, through these two reactions to obtain ammonium sulfite and ammonium bisulfite, both of which can be used as by-products, and at the same time remove SO2 to reduce pollution.

To quote a netizen: There is usually a higher content of SO2 in industrial waste gas, which passes ammonia, NH3+SO2+H2O==NH4HSO NH3+SO2+H2O==(NH4)2SO3, through these two reactions to obtain ammonium sulfite and ammonium bisulfite, both of which can be used as by-products, and at the same time remove SO2 to reduce pollution.

What is the temperature required for ammonia desulfurization?

What temperature works best.

It is not higher than 60 degrees, and the effect is best at 45 degrees.

The ammonia desulfurization process is an effective desulfurization technology, which can effectively reduce the sulfide content in the flue gas to meet the requirements of environmental protection. The principle of the ammonia desulfurization process is: the sulfide in the flue gas is adsorbed through activated carbon, and then the activated carbon is added to the ammonia-containing aqueous solution to convert the sulfide into sulfate through the reaction, and the ammonia of ammonia water can convert the sulfide into harmless sulfate, so as to achieve the purpose of purifying the flue gas.

The process of ammonia desulfurization process is mainly divided into three steps: first, in the activated carbon adsorber, the sulfide in the flue gas is adsorbed, and then the activated carbon is added to the solution containing ammonia, and the sulfide is converted into sulfate through chemical reaction. Secondly, activated carbon and ammonia are added to the mixture, and the mixture is heated, and a small amount of alkali solution is added at the same time to react with the ammonia and sulfide in the ammonia water to convert the sulfide into sulfate.

Finally, the sulfate in the mixture is filtered through the filtrate, and the sulfate in the solution is filtered out so that a clean flue gas can be obtained. The ammonia desulfurization process has a strong advantage in flue gas treatment, which can effectively reduce the content of sulfide in the flue gas, so as to meet the requirements of environmental protection. At the same time, due to the simplicity of the ammonia desulfurization process, its investment cost is relatively low, which can save equipment investment costs, and at the same time can save a lot of energy consumption.

In short, the ammonia desulfurization process is an effective desulfurization technology, which can effectively reduce the sulfide content in the flue gas to meet the requirements of environmental protection, and it has a low investment cost and saves energy consumption, therefore, it is an ideal desulfurization process.

SO2 + H2O = H2SO3 (Sulphurous acid.

NH3 + H2O = NH4OH (ammonia.

2NH4OH + H2SO3 = NH4)2SO3 (ammonium sulfite) + 2H2O (NH4)2SO3 + 2H2SO3 = 2NH4HSO3 (ammonium bisulfite) + H2O oxidation: (NH4)2SO3 + 1 2O2 = NH4)2SO4 NH4HSO3 + 1....

SO2 + H2O = H2SO3 (Sulphurous Acid) NH3 + H2O = NH4OH (Ammonia) 2NH4OH + H2SO3 = NH4)2SO3 (NH4) +2H2SO3 = 2NH4HSO3 (Ammonium Bisulfite) + H2O Oxidation: (NH4)2SO3 + 1 2O2 = NH4)2SO4 NH4HSO3 + 1....

In ammonia desulfurization, the influence of oxidation fans on desulfurization is very important. Specifically, the function of the oxidation celery fan is to oxidize hydrogen sulfide gas to elemental sulfur, and this process requires the consumption of a large amount of oxygen. Therefore, the performance and operating status of the oxidation fan will directly affect the desulfurization efficiency and operating cost.

First of all, the oxygen supply capacity of the oxidation fan determines the oxidation rate and oxidation effect of hydrogen sulfide gas. If the oxygen supply of the oxidation fan is not sufficient, it will lead to insufficient oxidation of hydrogen sulfide gas, which will affect the desulfurization efficiency. In addition, the oxygen supply of the oxidation fan will also affect the output of elemental sulfur, if the oxygen supply is too much, it will lead to excessive oxidation of elemental sulfur, which will affect the desulfurization efficiency and product quality.

Secondly, the temperature and pressure of the oxidation fan will also affect the desulfurization effect. If the inlet temperature of the oxidation fan is too high, it will lead to a decrease in the oxidation effect, which will affect the desulfurization efficiency. At the same time, the pressure of the oxidation fan will also affect the inlet speed and distribution of hydrogen sulfide gas, if the pressure is insufficient, it will lead to uneven distribution of hydrogen sulfide gas, thereby affecting the desulfurization effect.

In short, the oxidation fan plays a key role in ammonia desulfurization, and its performance and operating status will directly affect the desulfurization efficiency and product quality. Therefore, in actual operation, it is necessary to pay close attention to the operation status of the oxidation fan, adjust and maintain it in time to ensure the stable and efficient operation of the desulfurization system.

Summary. Hello, ammonia desulfurization is the use of gas ammonia or ammonia water as an absorbent, and the gas and liquid are counter-current contact in the desulfurization tower to remove SO2 in the flue gas.

Hello, ammonia desulfurization is the use of gas ammonia or ammonia water as an absorbent, and the gas and liquid are counter-current contact in the desulfurization tower to remove SO2 in the flue gas.

The desulfurization raw materials of the whole desulfurization system are ammonia and water, and Sun Shengchang's desulfurization product is solid ammonium sulfate, and the process does not produce new waste gas, waste water and waste residue. It not only improves sulfur resources, but also does not produce secondary pollution.

Its main technical characteristics are as follows: 1) single tower design, which has the effect of noisy chain to reduce costs and save space; 2) Empty tower spray to reduce the pressure drop of the system and save electric energy; 3) Large circulating volume, increase the liquid-gas ratio to make up for the shortcomings of the decrease in the desulfurization efficiency of the branch due to the increase of concentration, and ensure the desulfurization efficiency; 4) The flue gas spray cooling technology raises the stove to make the flue gas temperature reach the optimal temperature of ammonia desulfurization as soon as possible, increase the desulfurization efficiency, and reduce the height of the tower itself as much as possible;

5) The flue gas direct exhaust process completely solves the problem of original chimney corrosion, reduces the equipment investment, operating cost and maintenance loss of flue gas heating; 6) Improve the mixing method, reduce the cost, and enhance the market competitiveness of ammonia desulfurization technology; 7) The ammonium sulfate system adopts a new process, which fundamentally solves the problem of traditional ammonium sulfate. 8) No wastewater, waste gas, waste residue in the whole process, no secondary pollution; 9) The process is similar to limestone-gypsum, but the by-product is in the form of ammonium sulfate, which is an important fertilizer product, and its process is in line with the principles of circular economy.

Raw materials for desulfurization and ammonia? For example, there is urea, what else?

Hello, the raw material is ammonia, the desulfurization method is to use ammonia as the desulfurizer, the boiler flue gas enters the desulfurization tower and is absorbed by ammonia water circulation to generate ammonium sulfite, and the flue gas after desulfurization is purified by defogging and entering the Changshen chimney for discharge. The ammonium sulfite formed by absorption is transformed into ammonium sulfate at the bottom of the absorption tower, and the finished sulfur ammonia is obtained after evaporation crystallization, solid-liquid separation, drying and packaging.

What raw materials are used for deamination?

The ingredients are generally water, acid (neutralizing phosphoric acid), surfactant (non-ionic surfactant), flavor, corrosion inhibitor, pigment, etc. Among them, there can be many kinds of acids depending on the use, such as hydrochloric acid, phosphoric acid and other compound acids, mixed acids, etc. Late burial.