Sulfur Recovery Daily Question 2018.12.24
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Question 1: What factors affect the combustion of exhaust gases? Answer: The purpose of the incinerator is to burn all of the H2S in the exhaust gases into SO2, while minimizing the generation of NOX. There are the following factors that influence this process. (1) Incineration temperature: H2S in the exhaust gases reacts with O2 to form SO2; the higher the temperature, the greater the conversion rate of this reaction. Therefore, a higher temperature is favorable for the incineration of H2S, but extremely high temperatures are not necessary – the temperature is generally controlled between 550-720°C. (2) Air flow: To ensure complete combustion of H2S in the exhaust gases, an adequate amount of air is necessary; the greater the amount of air, the more complete the combustion of H2S. However, too much air increases the energy consumption of the system. In accordance with environmental regulations, the O2 content in the flue gases should be controlled at 1.5–4.0% (V). (3) Distribution of air flow: The burners in the incinerator are low-NOx burners. To reduce the formation of NOx during gas combustion, the main air flow to the burners is approximately 80% of the stoichiometric amount required for gas combustion; the remaining 30% of the stoichiometric air enters the rear part of the burner, thereby preventing the formation of NOx due to excess oxygen in the high-temperature areas of the burner.
Temperature, oxygen concentration, ventilation rate
Answer: The purpose of the incinerator is to burn all of the H2S in the exhaust gases into SO2, while minimizing the generation of NOX. There are the following factors that influence this process. (1) Incineration temperature: H2S in the exhaust gases reacts with O2 to form SO2; the higher the temperature, the greater the reaction conversion rate
Answer: The purpose of the incinerator is to burn all of the H2S in the exhaust gases into SO2, while minimizing the generation of NOX. There are the following factors that influence this process. (1) Incineration temperature: H2S in the exhaust gases reacts with O2 to form SO2; the higher the temperature, the greater the reaction conversion rate
The purpose of the incinerator is to burn all of the H2S in the exhaust gases into SO2, while minimizing the generation of NOX; there are the following factors that influence this process. (1) Incineration temperature: The reaction of HS in the exhaust gases results in the formation of SO2; the higher the temperature, the greater the conversion rate of this reaction. Therefore, a higher temperature is favorable for the incineration of H2S, but extremely high temperatures are not necessary. Generally, the temperature is controlled between 550–720°C. (2) Air flow: To ensure complete combustion of H2S in the exhaust gases, an adequate amount of air is necessary; the greater the amount of air, the more complete the combustion of H2S. However, too much air increases the energy consumption of the system. In accordance with environmental regulations, the oxygen content in the flue gases should be controlled between 1.5% and 4.0% (V). (3) Distribution of air flow: The burners in the incinerator are low-NOx burners. To reduce the formation of NOx during the combustion of gas, the main air flow to the burners amounts to about 80% of the stoichiometric amount required for gas combustion; the remaining 30% of the stoichiometric air enters the rear part of the burner, thereby preventing the formation of NOx due to oxygen excess in the high-temperature areas of the burner.
The purpose of the incinerator is to burn all of the H2S in the exhaust gases into SO2, while minimizing the generation of NOX; there are the following factors that influence this process. (1) Incineration temperature: The reaction of HS in the exhaust gases results in the formation of SO2; the higher the temperature, the greater the conversion rate of this reaction. Therefore, a higher temperature is favorable for the incineration of H2S, but extremely high temperatures are not necessary. Generally, the temperature is controlled between 550–720°C. (2) Air flow: To ensure complete combustion of H2S in the exhaust gases, an adequate amount of air is necessary; the greater the amount of air, the more complete the combustion of H2S. However, too much air increases the energy consumption of the system. In accordance with environmental regulations, the oxygen content in the flue gases should be controlled between 1.5% and 4.0% (V). (3) Distribution of air flow: The burners in the incinerator are low-NOx burners. To reduce the formation of NOx during the combustion of gas, the main air flow to the burners amounts to about 80% of the stoichiometric amount required for gas combustion; the remaining 30% of the stoichiometric air enters the rear part of the burner, thereby preventing the formation of NOx due to oxygen excess in the high-temperature areas of the burner.
There are the following influencing factors. (1) Incineration temperature: H2S in the exhaust gases reacts with O2 to form SO2; the higher the temperature, the greater the conversion rate of this reaction. Therefore, a higher temperature is favorable for the incineration of H2S, but extremely high temperatures are not necessary – the temperature is generally controlled between 550-720°C. (2) Air flow: To ensure complete combustion of H2S in the exhaust gases, an adequate amount of air is necessary; the greater the amount of air, the more complete the combustion of H2S. However, too much air increases the energy consumption of the system. In accordance with environmental regulations, the O2 content in the flue gases should be controlled at 1.5–4.0% (V). (3) Distribution of air flow: The burners in the incinerator are low-NOx burners. To reduce the formation of NOx during gas combustion, the main air flow to the burners is approximately 80% of the stoichiometric amount required for gas combustion; the remaining 30% of the stoichiometric air enters the rear part of the burner, thereby preventing the formation of NOx due to excess oxygen in the high-temperature areas of the burner
The purpose of the incinerator is to burn all of the H2S in the exhaust gases into SO2, while minimizing the generation of NOX; there are the following factors that influence this process. (1) Incineration temperature: H2S in the exhaust gases reacts with O2 to form SO2; the higher the temperature, the greater the reaction conversion rate