Device for obtaining sludge pyrolysis oil of different purposes in circulating fluidized bed reactor

Abstract

The invention discloses a device for obtaining sludge pyrolysis oil of different purposes in a circulating fluidized bed reactor. A sludge storage bin is connected to the lower end of a circulating fluidized bed body through a feeding spiral; a primary cyclone separator is connected to the upper part of the circulating fluidized bed body; the lower end of the primary cyclone separator is connected to the lower part of the circulating fluidized bed body through a return feeder; a return feeder slag discharge valve for controlling a solid circulation rate of the circulating fluidized bed is arranged on the return feeder; the top end of the primary cyclone separator is connected with a secondary cyclone separator; the top end of the secondary cyclone separator is connected with a spray tower main body; a carbon residue storage tank is arranged at the bottom of the secondary cyclone separator; the spray tower main body is connected with an upper oil recovery bottle; a lower oil discharge opening is formed in the bottom of the spray tower main body. A circulating fluidized bed mode is adopted, so that a gas-solid heat transfer effect is improved. Moreover, high-ash sludge pyrolysis oil of different purposes is obtained in one circulating fluidized bed reactor.

Description

technical field [0001] The invention belongs to the field of solid waste resource disposal, and relates to a device for obtaining sludge pyrolysis oil for different purposes in the same circulating fluidized bed reactor. Background technique [0002] At present, the total scale of urban sewage treatment in my country has reached 100 million tons per day, and the amount of sludge has reached 50,000 tons per day. Improper or untimely treatment of these large amounts of sludge will cause serious secondary pollution. At present, 83% of the sludge in urban sewage treatment plants with a national sewage treatment capacity of 200,000 t / d or more has not been properly disposed of. . [0003] Sludge low-temperature pyrolysis oil production technology is to dry the sludge to a certain temperature (<500°C) by anaerobic heating, and convert the sludge into oil, reaction water, non-condensable gas (NGG) and charcoal by dry distillation and thermal decomposition. And other 4 kinds o...

AI Technical Summary

Problems solved by technology

However, the continuous increase of ash concentration in the reaction zone will reduce the production of high calorific value component oil

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