Regenerative thermal oxidation device and process for processing electroplating sludge sintering waste gas

Abstract

The invention relates to a regenerative thermal oxidation device and process for processing electroplating sludge sintering waste gas. The temperature of the inlet waste gas entering an RTO heat storage bed and the flow rate of the waste gas flowing through the heat storage bed are flexibly adjusted by arranging an inlet fresh air fan. An RTO cold bypass regulating pipeline and heat bypass regulating pipeline are arranged to flexibly adjust the heat load distribution, so as to adjust the temperature of an RTO regenerator and combustion chamber and improve the heat recovery efficiency. Throughthe fresh air fan and the cold and heat bypass adjustment, the organic silicon burned in the middle of the heat storage body can be avoided, and at the same time, a replacement layer is arranged on the top of the heat storage bed to solve the problem that the bed is blocked and difficult to clean. Through targeted improvement of the RTO device and process, the regenerative thermal oxidation deviceand process can adapt to the characteristics of electroplating sludge sintering waste gas, solve existing practical problems, realize long-term safe and efficient operation, meet the requirements ofemission standards, remove more than 99% volatile organic compounds, and have good economic and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a regenerative thermal oxidation (hereinafter referred to as RTO) device and process for treating electroplating sludge sintering waste gas. Background technique [0002] Due to the complex composition of electroplating sludge sintering waste gas, in addition to dust, sulfur oxides, nitrogen oxides and other pollutants, there are also combustible components (including volatile organic compounds, carbon monoxide, etc.) with large calorific value fluctuations and low spontaneous ignition components. Due to the characteristics of high ratio and organic silicon components, it is not possible to simply apply existing mature technologies in other industries, and it is necessary to develop a suitable technical route according to the actual situation of the industry. [0003] At present, domestic electroplating sludge sintering devices are generally only equipped with dust re...

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is that the heat value of the combustible components of electroplating sludge sintering waste gas fluctuates greatly in the above-mentioned prior art, the proportion of components with low spontaneous ignition point is large, and the components containing organic silicon components cause the RTO heat storage body to heat up. In order to solve the problems of low recovery efficiency and bed blockage that is difficult to clean up, a regenerative thermal oxidation device and process for treating electroplating sludge sintering waste gas can be provided, which can effectively improve the heat recovery efficiency of the regenerator, and can meet the needs of RTO devices in electroplating sludge. Long-term safe and stable operation under various working conditions where the calorific value of the components of the sintering waste gas fluctuates, and at the same time avoids the problem that the organosilicon burns inside the regenerator and causes the internal clogging of the regenerator to be difficult to clean

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