What are the ghosts that emit white smoke, black smoke, yellow smoke, and colorful smoke from the chimney? What are the hazards?
Publishdate：2020-10-23 Views：16
The smoke emitted by factories can be roughly divided into the following categories: white smoke, black smoke, yellow smoke, "fire smoke", and smokeless. So what exactly are all these types of cigarettes? Will it pollute the environment?
White smoke
White smoke should be the most common type of smoke we have now, and many people will find that the colder the weather, the more obvious the white smoke. What is white smoke? Why is the sky noticeably cooler? In fact, most white "smoke plumes", especially those seen in cold weather, are only water vapor (and condensed water droplets). The boiler feed water tank is equipped with a chimney, which only emits water vapor and air. Water is one of the important byproducts of combustion, therefore, water vapor exists in the chimneys of coal, oil, and natural gas boilers. This can also prove that the company used environmentally friendly equipment. In order to meet emission standards and reduce dust pollution, the company will install water filtration equipment at the emission terminals of the equipment. The exhaust gas from the boiler enters the water filter, and all the dust inside is filtered out before being discharged into the atmosphere. When filtering dust, the high heat in the exhaust gas is also absorbed by water, forming water vapor that is discharged from the chimney. When it is cold, we see white smoke. It can also be seen from the side that the pollutants emitted by the boiler comply with the national emission standards.
black smoke
Careful friends should notice that the black smoke from the large chimney is decreasing, but some small businesses and workshops still emit a lot of black smoke from their chimneys. Most of these small businesses burn the cheapest and worst quality bulk coal, and the exhaust gas generated from combustion is basically discharged without treatment. Bulk coal contains a large amount of sulfur and nitrate. The sulfur dioxide and nitrogen oxides produced after combustion are harmful to the human body. The harm is significant, therefore the pollution is also significant.
tobacco
If the flue gas column discharged from the chimney is yellow, it indicates that the flue gas contains a large amount of sulfides, indicating that the desulfurization equipment of the boiler has not been put into use.
"Fire and smoke"
In a chemical plant, you can always see a chimney with flames, which burns day and night. Actually, this is not a chimney, its name is a safety torch. In the production process of chemical plants, many flammable and explosive gases are produced, many of which are harmful to human health. Most of them are heavier than air. If they are placed in the atmosphere and spread, they will deposit on the ground and reach high concentrations, which will cause serious environmental pollution and endanger human health. If a fire occurs, it will cause a fire or even an explosion. To prevent these dangers from happening, people collect them and burn them to prevent future troubles. The torch converts these flammable, explosive, toxic, and corrosive gases into harmless carbon dioxide, water, or other non-toxic and less toxic substances through combustion. Burning these fuels directly in this way is indeed a waste, so the factory is doing everything possible to recycle torch gas as useful fuel. However, even if the recovery is thorough, the cutting torch cannot be cancelled because in the event of an accident, a large amount of combustible gas must still be burned to ensure safety. Therefore, it can be said that the cutting torch device is a safety barrier for chemical plants.
cooling tower
There is also a cooling tower mistaken for a chimney. Unless the cooling tower catches fire, there are traces of discharged water vapor, as well as some fungicides and algae drugs. Cooling towers use the flow of water and air to exchange heat and cold to generate steam. The evaporation of steam carries away heat, thereby achieving the principles of evaporative heat dissipation, convective heat transfer, and radiative heat transfer, in order to dissipate waste heat generated in industry, refrigeration, and air conditioning, and reduce water temperature. The evaporative heat dissipation device ensures the normal operation of the system, so the upper part is filled with water vapor.
smokeless
There are basically two situations where there is no smoke. One scenario is the installation of environmental protection facilities and the installation of GGH flue gas heat exchangers in the unit. The principle is to increase the temperature of the exhaust gas through heating to make it higher, but due to high failure rates and extremely high investment and operating costs, it is gradually being phased out. Another situation is that there is no installed environmental protection equipment, but the coal quality is good or simple dust removal treatment has been carried out, but the flue gas contains a large amount of sulfur dioxide and nitrogen oxides, which are more harmful than white. Smoking.
These are just some knowledge introduced by the editor, but by no means all. It cannot be said that all white smoke is pollution-free. Nothing is relative, will the emissions from chimneys pollute our eyes. It cannot be evaluated, but can be used as an advanced checkpoint for us to determine whether it is contaminated.
Colored smoke
Colored smoke is the most toxic.
In some chemical plants, if a fire occurs, bright smoke will be emitted. Although they look good, the opposite of their appearance is smoking.
Colored smoke is the most toxic, highly toxic, and corrosive. Moreover, this poison is very powerful. Once inhaled, the human body will suffocate and die. Corrosive to the skin. Once the human body touches it, it will be immediately destroyed like being poured into sulfuric acid.
Therefore, we must wrap ourselves in clothes, not expose our skin, and stay away from this highly toxic colored smoke. Run as far as you can when encountering colorful smoke.
The smoke emitted by factories can be roughly divided into the following categories: white smoke, black smoke, yellow smoke, "fire smoke", and smokeless. So what exactly are all these types of cigarettes? Will it pollute the environment?
White smoke
White smoke should be the most common type of smoke we have now, and many people will find that the colder the weather, the more obvious the white smoke. What is white smoke? Why is the sky noticeably cooler? In fact, most white "smoke plumes", especially those seen in cold weather, are only water vapor (and condensed water droplets). The boiler feed water tank is equipped with a chimney, which only emits water vapor and air. Water is one of the important byproducts of combustion, therefore, water vapor exists in the chimneys of coal, oil, and natural gas boilers. This can also prove that the company used environmentally friendly equipment. In order to meet emission standards and reduce dust pollution, the company will install water filtration equipment at the emission terminals of the equipment. The exhaust gas from the boiler enters the water filter, and all the dust inside is filtered out before being discharged into the atmosphere. When filtering dust, the high heat in the exhaust gas is also absorbed by water, forming water vapor that is discharged from the chimney. When it is cold, we see white smoke. It can also be seen from the side that the pollutants emitted by the boiler comply with the national emission standards.
black smoke
Careful friends should notice that the black smoke from the large chimney is decreasing, but some small businesses and workshops still emit a lot of black smoke from their chimneys. Most of these small businesses burn the cheapest and worst quality bulk coal, and the exhaust gas generated from combustion is basically discharged without treatment. Bulk coal contains a large amount of sulfur and nitrate. The sulfur dioxide and nitrogen oxides produced after combustion are harmful to the human body. The harm is significant, therefore the pollution is also significant.
tobacco
If the flue gas column discharged from the chimney is yellow, it indicates that the flue gas contains a large amount of sulfides, indicating that the desulfurization equipment of the boiler has not been put into use.
"Fire and smoke"
In a chemical plant, you can always see a chimney with flames, which burns day and night. Actually, this is not a chimney, its name is a safety torch. In the production process of chemical plants, many flammable and explosive gases are produced, many of which are harmful to human health. Most of them are heavier than air. If they are placed in the atmosphere and spread, they will deposit on the ground and reach high concentrations, which will cause serious environmental pollution and endanger human health. If a fire occurs, it will cause a fire or even an explosion. To prevent these dangers from happening, people collect them and burn them to prevent future troubles. The torch converts these flammable, explosive, toxic, and corrosive gases into harmless carbon dioxide, water, or other non-toxic and less toxic substances through combustion. Burning these fuels directly in this way is indeed a waste, so the factory is doing everything possible to recycle torch gas as useful fuel. However, even if the recovery is thorough, the cutting torch cannot be cancelled because in the event of an accident, a large amount of combustible gas must still be burned to ensure safety. Therefore, it can be said that the cutting torch device is a safety barrier for chemical plants.
cooling tower
There is also a cooling tower mistaken for a chimney. Unless the cooling tower catches fire, there are traces of discharged water vapor, as well as some fungicides and algae drugs. Cooling towers use the flow of water and air to exchange heat and cold to generate steam. The evaporation of steam carries away heat, thereby achieving the principles of evaporative heat dissipation, convective heat transfer, and radiative heat transfer, in order to dissipate waste heat generated in industry, refrigeration, and air conditioning, and reduce water temperature. The evaporative heat dissipation device ensures the normal operation of the system, so the upper part is filled with water vapor.
smokeless
There are basically two situations where there is no smoke. One scenario is the installation of environmental protection facilities and the installation of GGH flue gas heat exchangers in the unit. The principle is to increase the temperature of the exhaust gas through heating to make it higher, but due to high failure rates and extremely high investment and operating costs, it is gradually being phased out. Another situation is that there is no installed environmental protection equipment, but the coal quality is good or simple dust removal treatment has been carried out, but the flue gas contains a large amount of sulfur dioxide and nitrogen oxides, which are more harmful than white. Smoking.
These are just some knowledge introduced by the editor, but by no means all. It cannot be said that all white smoke is pollution-free. Nothing is relative, will the emissions from chimneys pollute our eyes. It cannot be evaluated, but can be used as an advanced checkpoint for us to determine whether it is contaminated.
Colored smoke
Colored smoke is the most toxic.
In some chemical plants, if a fire occurs, bright smoke will be emitted. Although they look good, the opposite of their appearance is smoking.
Colored smoke is the most toxic, highly toxic, and corrosive. Moreover, this poison is very powerful. Once inhaled, the human body will suffocate and die. Corrosive to the skin. Once the human body touches it, it will be immediately destroyed like being poured into sulfuric acid.
Therefore, we must wrap ourselves in clothes, not expose our skin, and stay away from this highly toxic colored smoke. Run as far as you can when encountering colorful smoke.
