New process for performing thermal oxidation treatment on VOCs waste gas produced by coking as well as treatment device
A technology of oxidation treatment and waste gas heating, which is applied in the directions of gas treatment, chemical instruments and methods, and separation of dispersed particles, and can solve the problems that VOCs waste gas cannot meet the requirements of pollutant emission limits.
Pending Publication Date: 2018-10-16
SHANGHAI MEISHAN IND CIVIL ENG DESIGN & RES INST CO LTD
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Problems solved by technology
[0008] In order to overcome the above-mentioned defects of the prior art, and to solve the problem that the existing coking plants use the absorption method to treat VOCs waste gas and cannot meet the requirements of the national standard for pollutant discharge limits, the purpose of the present invention is to provide a safe and reliable coking plant The new technology and treatment device for thermal oxidation treatment of VOCs waste gas is the first case in China to use RTO thermal oxidation furnace (regenerative thermal oxidation furnace) for the treatment of VOCs waste gas in the coking industry. Thermal oxidation, the VOCs waste removal rate reaches 99%, which meets the requirements of "Special Emission Limits of Air Pollutants" in the "Emission Standards for Pollutants in the Coking Chemical Industry" (GB16171-2012)
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[0035] The new process of thermal oxidation treatment of VOCs waste gas produced by coking in the present invention was put into production in August 2017. So far, it is running normally and the system is stable. The maximum treatment capacity for VOCs waste gas is 18,000 m 3 / h, the actual processing capacity is between 4000 and 6000m 3 / h, the VOCs waste gas purification treatment effect is good, meeting the emission standards and index requirements in Table 1.
[0036] Table 1 "Coking Chemical Industry Pollutant Discharge Standard" (GB16171-2012) emission limits (unit: mg / m 3 )
[0037]
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The invention discloses a new process for performing thermal oxidation treatment on VOCs waste gas produced by coking as well as a treatment device. The new process comprises the following steps: after pretreating the VOCs waste gas by a washing oil absorbing device, carrying out preheating, decomposition and scavenging cyclic thermal oxidation treatment, and carrying out separation and aftertreatment, wherein an RTO thermal oxidation furnace is applied to VOCs waste gas treatment in coking industry, the VOCs waste which still does not reach to the standard after adsorption pretreatment is subjected to RTO thermal oxidation, the removal rate of the VOCs waste gas reaches to 99 percent, and the requirement of a discharge limit value in 'Coking Chemical Industry Pollutant Discharge Standard' (GB16171-2012) is met.
Description
technical field [0001] The invention belongs to the field of chemical waste gas treatment, and in particular relates to a new process and a treatment device for thermal oxidation treatment of VOCs waste gas produced by coking. Background technique [0002] The existing production units in the coking chemical production area include 3# tar distillation, tar intermediate tank area, oil depot unit, oil product preparation, oil depot west area, dephenolization and industrial naphthalene, phenoxide decomposition, phenol distillation, naphthalene flaking and modified asphalt In the production process, the materials and production equipment are different, and the waste gas produced is of various types and properties, and the characteristics of the sources are also different. Among them, the main components of coking waste gas are volatile organic compounds VOCs, including non-methane total hydrocarbons, benzene, phenols, and naphthalene, etc., and also contain a small amount of hyd...
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IPC IPC(8): B01D53/72
CPCB01D53/72B01D2257/708
Inventor 钱仲瑛陈泉明方文新秦文涛陈年连
Owner SHANGHAI MEISHAN IND CIVIL ENG DESIGN & RES INST CO LTD