Treatment method of waste paper making waste gas

Abstract

The invention discloses a treatment method of waste gas generated during process of making paper by using waste paper. A secondary furnace hearth is built beside a main furnace hearth; a plurality ofsecondary incineration chambers are formed in the secondary furnace hearth; the set time for driving each sludge incineration isolation net layer to rock back and forth through a swinging mechanism iscontrolled according to the set time interval; secondary heat exchangers mounted in the secondary incineration chambers are used for absorbing heat generated in the sludge incineration process; a water vapor discharging pipe arranged at the upper part of the secondary furnace hearth is used for recycling the water vapor; a waste gas recycling channel is connected with a gas inlet in the lower part of a waste gas treatment tower; the waste gas flows through dynamic balanced water, is diffused and filtered, and is subsequently discharged by a main chimney. The treatment method is easy to implement, low in infrastructure investment cost and low in operation cost, is capable of efficiently treating the papermaking waste gas generated in the incineration process of high-flow sludge, can achieve zero emission of waste gas, is more environmentally friendly in production process, and is used as an important component in achievement of clean production in the papermaking enterprises.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment methods, in particular to a treatment method for waste gas produced by incinerating sludge by using waste paper to make paper. Background technique [0002] With the improvement of the government's environmental protection requirements for enterprises, the requirements for the treatment of three wastes in polluting enterprises are getting higher and higher. Paper-making enterprises that use waste paper to make paper have relatively large pollution. Paper-making enterprises generally have boiler power stations. At present, the main fuel of boiler power stations has been replaced by natural gas. The waste gas produced after natural gas combustion is mainly carbon dioxide, which is very environmentally friendly. [0003] However, due to the use of waste paper in papermaking enterprises, a large amount of sludge will be generated in the papermaking process, and the sludge must be treated,...

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Problems solved by technology

[0004] However, after adding dried sludge as fuel in the boiler power station of the papermaking enterprise, the sludge combustion process will produce waste gas with multiple components, and the composition of the waste gas is more complex. Therefore, the waste gas needs to be treated before it can be discharged. , although there are many ways to treat waste gas in the prior art, and zero emission of waste gas can be realized after treatment, but the cost of waste gas treatment equipment and waste gas treatment is very high, so it is necessary to improve

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