Energy-saving activating reaction furnace for preparing special activated carbon for sewage treatment

Abstract

The invention relates to an energy-saving activation reaction oven which is used for preparing active carbon that is specially used for wastewater treatment. The oven mainly consists of an oven body, a checker chamber, a secondary checker return combustion chamber, a steam generator, a water supply system, a steam supply system, a temperature control system and a fume extraction system. The invention adopts raw materials containing carboniferous material woodbase carbonized materials, the inherent fixed carbon content is 75-80 percent, the carbon material self-conbusts in high temperature during the activation process to produce heat quantity and the checker chamber and the secondary return combustion checker chamber are utilized for accumulating heat, the water supply system is adopted to supply water to the steam generator, a coal burning boiler is replaced by a heat-accumulating inductive steam generator of the checker chamber to generate steam, then a water steam activation agent is transferred to the hearth by a steam transfer system so as to lead the activation material in the oven to be activated under the condition of water steam and high temperature provided by the burning of the carbonized material, the activation temperature and speed can raise by the strong cycling extraction force of a chimney, the activation temperature can be controlled by an upper flue control valve and a return combustion control valve, the secondary return combustion checker chamber is utilized for raising the activation temperature in the oven and leading the activation material in the oven to be further activated sufficiently. The invention can be utilized for batch-producing active carbon with rich coarse micropores, the distribution of 10-16nm pores reaching 65 percent at least, the iodine sorption value greater than 950mg / g, and the methyl thionine chloride reaching 180-200mg / g, and the invention can be specially applied for urban multi-ingredient wastewater treatment.

Description

Technical field [0001] The invention relates to an energy-saving activation reaction furnace device for preparing activated carbon special for urban sewage treatment. technical background [0002] The energy-saving physical method activation reaction furnace device is the key equipment for preparing activated carbon for urban multi-component sewage treatment, and it is the main means of endowing activated carbon with developed coarse and micro pores and strong adsorption performance. Activated carbon is a porous carbon-containing substance with a thickness of 700-1400m 2 The adsorption characteristics formed by the specific surface area and pore size distribution in the range of 2-1000nm per gram are widely used in various fields of the national economy. This traditional activated carbon shows well-developed micropores <2nm and macropores >50nm. The substance is well adsorbed, and its adsorption capacity is limited when used in urban multi-component sewage treatment. ...

AI Technical Summary

Problems solved by technology

The activation reaction furnaces for the production of activated carbon by the traditional method mainly include the Sleep furnace imported from the former Soviet Union and the rotary furnace and vertical fluidized fluidized furnace independently formed by Chinese enterprises. These furnaces have large specifications, large floor space, large investment, and high energy consumption. , It needs external coal-fired boiler to supply water steam, which will inevitably result in single product performance, high unit cost and coal-fired boiler emitting SO into the atmosphere 2 , CO and other polluting environment

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