Heat storage type combustion device and method for processing dust-containing VOC waste gas
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An incineration device and regenerative technology, which is applied in the combustion method, incinerator, combustion type, etc., can solve the problems of heat exchange deterioration, over-temperature burning of the regenerative body, blockage of small holes, etc., and achieve the effect of high-efficiency and energy-saving treatment
Active Publication Date: 2016-11-09
BEIJING AEROSPACE PROPULSION INST +1
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[0004] The VOC exhaust gas in the industry often contains dust or tar and other substances that are easily adsorbed or bonded, and the ceramic honeycomb regenerator commonly used in the regenerator has a small pore size. Blockage, which in turn leads to deterioration of heat transfer, and even more severe overheating of the heat storage body. It can be seen that the dust or tar in the exhaust gas and other easily adsorbed or sticky substances have a greater impact on the service life of the RTO, and should be removed before the waste gas enters the heat storage body. Or filtering out such substances is an effective way to extend the service life of RTO
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Embodiment 1
[0023] Such as figure 1 As shown, a regenerative incineration device for treating dusty VOC waste gas according to the present invention includes a linkage valve combination 100, a regenerative ash cleaning device 200, a regenerator 300, an oxidation incinerator 400, a burner 500, Waste heat boiler 600 and quench absorption device 700 .
[0024]The upper part of the regenerator 300 is a connected oxidation incineration chamber 400, and the lower part of the regenerator 300 is arranged with a heat storage and ash cleaning device 200. The regenerator 300 is connected to the waste gas pipeline 110, the reverse blowing pipeline 120 and the flue gas through the linkage valve combination 100. Pipeline 130; two burners 500 for combustion are arranged on the oxidation incineration chamber 400.
[0025] The regenerator 300 includes the first regenerator 310, the second regenerator 320 and the third regenerator 330, and the same linkage valve combination 100 is distributed under each r...
Embodiment 2
[0031] The regenerative incineration method for treating dust-containing VOC waste gas using the device described in Example 1 includes the following steps: the VOC waste gas contains harmful gases such as toluene, xylene, sulfur-containing compounds, and a large amount of dust, and in the operating condition Large fluctuations in composition and flow rate, resulting in large fluctuations in calorific value, the design waste gas treatment capacity is 30000Nm 3 / h.
[0032] First, the fresh air blower is started to pre-purge the regenerator 300 and the oxidation incineration chamber 400 for three minutes, and the residual waste gas in the incineration device is discharged; the burner 500 is started to ignite and heat up to 850-950°C (for example: 850°C, 900°C or 950°C), switch to work mode:
[0033] In the first step, the exhaust gas is preheated to a higher temperature of 800-900°C (for example: 800°C, 850°C or 900°C) through the heat storage bin 1 310, and then enters the ox...
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Abstract
The invention discloses a heat storage type combustion device and method for processing dust-containing VOC waste gas. Efficient and energy-saving processing of the high-dust-containing VOC waste gas is finally achieved. The device comprises linked valve assemblies, a heat storage dust removal device, a heat storage chamber, an oxidization combustion chamber, combustors, a waste heat boiler and a quenching absorbing device. The upper portion of the heat storage chamber is provided with the oxidization combustion chamber which is communicated with the heat storage chamber. The lower portion of the heat storage chamber is provided with the heat storage dust removal device. The heat storage chamber is connected with a waste gas pipeline, a reverse blowing pipeline and a smoke pipeline through the linked valve assemblies. The combustors for combustion supporting are arranged on the oxidization combustion chamber. The heat storage chamber comprises a plurality of heat storage bins. The same linked valve assemblies are distributed below the heat storage bins. Efficient and energy-saving process of dust-containing, sulfur-containing, halogen-containing harmful VOC waste gas and large working condition fluctuation can be achieved. The heat recovery rate of 95% or above can be achieved, the removal rate of combustible components and harmful components can reach 99% or above, little NOX is generated, and the device is an ideal scheme for processing high-dust-containing VOC waste gas.
Description
technical field [0001] The invention relates to the field of high-dust VOC waste gas treatment in petrochemical, surface coating and other industries, in particular to a regenerative incineration device and method for treating dust-containing VOC waste gas. Background technique [0002] Volatile Organic Compounds, VOC is a common pollutant emitted by petrochemical and various industries that use organic solvents. Xylene, toluene, methyl ethyl ketone, and halogen compounds contained in VOC exhaust gas are toxic gases. Most of these compounds have pungent odors. Direct contact will cause harm to human health, and some components have been listed as carcinogens. VOC organic waste gas also has a certain calorific value, and it is directly discharged without treatment, which pollutes the environment and wastes energy. [0003] In the prior art, the most ideal way to treat VOC waste gas is to use RTO, that is, regenerative thermal oxidation furnace. Its working principle is to p...
Claims
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