Catalytic combustion equipment greatly improves environmental pollution issues
Release time:
2023-04-14 09:17
1： Industrial catalytic combustion waste gas treatment, industrial catalytic combustion catalyst for waste gas treatment, low combustion energy consumption, initial things, electric heating temperature and discomfort conjunctions, frequently used.
2： In the use of catalytic combustion, the following are the drawbacks of catalytic combustion technology.
1. High temperatures can easily damage pipelines and equipment;
If the heat storage body clumps and has a short lifespan;
3. The pressure inside the furnace changes significantly, causing a large amount of heat to overflow and not achieving the actual energy-saving effect;
4. Daily maintenance quantity and cost.
In fact, each type of exhaust gas treatment process has the upper hand, and the practical purification of exhaust gas in catalytic combustion process. If intermittent exhaust is used, not only will the energy of each preheating be dissipated, but the reaction heat cannot be used, resulting in a large amount of energy waste. In order to deal with the exhaust gas discharged from high-temperature areas such as enameled wires, insulation materials, paint, and other dry exhaust gases, the temperature can reach 300 degrees Celsius or above, and there is no need to set up a preheating device.
Catalytic combustion can be widely used for purifying low concentration exhaust gases produced in industries such as petroleum, chemical, rubber, paint, coatings, furniture, household appliances, printing, etc. The types of substances that can be processed include benzene, ketones, esters, alcohols, ethers, and alkanes.
Long service life: The catalyst is usually replaced within 8000 hours, and the carrier can be used.
The purpose of producing catalytic combustion equipment is to protect the environment. It is a method of industrial waste gas pollution. In industrial production, a large amount of waste gas containing benzene, alcohols, ketones, etc. is emitted. It endangers the health of workers and pollutes the environment. Catalytic combustion equipment, as a means of controlling exhaust gas pollution, has achieved considerable results in China. However, there are still some potential uncertainties and accident hazards in the design, processing, and application of catalytic combustion devices, and serious fires and explosions may occur in the devices. Therefore, concentration control standards or design specifications should be unified to treat waste gas through catalytic combustion. In addition to the above factors, from a technical perspective, the following points need to be noted:
Generally speaking, at the same lower explosive limit concentration, the combustion heat values of most components in the exhaust gas can be considered to be the same. If the calorific value of each lower explosive limit is used to heat the exhaust gas itself, the exhaust gas with a lower explosive limit of 1% can be burned. The exhaust gas can be heated at 15.3 ℃. When the concentration of exhaust gas reaches the lower explosive limit of 25%, the exhaust gas itself can be heated. Attention should be paid when using catalytic combustion equipment. Operate according to regulations to avoid accidents.
The lower explosive limit of a gas is related to temperature. Usually, the higher the temperature, the faster the reaction speed, and the larger the explosion range. When the concentration of exhaust gas entering the catalytic combustion device is too high, the temperature of the catalytic combustion device will increase. Moreover, due to the lack of exhaust gas concentration detection and control equipment in previous domestic catalytic combustion devices, the exhaust gas with a lower explosion limit and a higher temperature will be less than the value given in the manual, plus the waste in the equipment. The uneven mixing of gas components may exceed the actual explosion limit of exhaust gas at high temperatures in local areas, which may lead to explosion risks.
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The approximate process flow of catalytic combustion equipment
Preheating: Preheating is the basic process form of catalytic combustion. The exhaust gas temperature is below 100 ℃ and the concentration is also low, so heat cannot be self-sufficient. Therefore, before entering the reactor, it needs to be heated in the preheating chamber. After combustion and purification, the gas exchanges heat with the untreated exhaust gas in the heat exchanger to recover some of the heat. This process usually uses gas or electric heating to raise the temperature to the ignition temperature required for the catalytic reaction.
With the continuous deterioration of the environment, China also advocates environmental protection. The existing catalytic combustion equipment is not only environmentally friendly, but also recyclable
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