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Method for obtaining sludge pyrolytic oil with different uses in circulating fluidized bed reactor

A circulating fluidized bed and reactor technology, applied in pyrolysis treatment of sludge, petroleum industry, by-product vaporization, etc., can solve the problem of reducing the output of high calorific value component oil, and achieve the effect of improving the effect of gas-solid heat transfer

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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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  • Method for obtaining sludge pyrolytic oil with different uses in circulating fluidized bed reactor

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Embodiment Construction

[0023] Refer below figure 1 , to specifically illustrate the present invention.

[0024] A method for obtaining sludge pyrolysis oil for different purposes in a circulating fluidized bed reactor. The method uses an adjustable rate circulating fluidized bed as the reactor for pyrolyzing sludge, and the high solid circulation rate is maintained at 30-50. The low solid circulation ratio is kept at 1-29; the solid circulation ratio of the circulating fluidized bed is controlled by adjusting the opening frequency and opening time of the slagging valve of the adjustable ratio circulating fluidized bed. details as follows:

[0025] 1) The sludge enters from the bottom side of the adjustable rate circulating fluidized bed, and the fluidization air enters through the bottom air chamber of the adjustable rate circulating fluidized bed. The adjustable rate circulating fluidized bed includes furnace slag discharge pipe 1, air chamber 2, Feeding screw 3, sludge silo 4, circulating fluidi...

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Abstract

The invention discloses a method for obtaining sludge pyrolytic oil with different uses in a circulating fluidized bed reactor. A ratio-adjustable circulating fluidized bed is adopted as a reactor to pyrolyzing sludge, a high solid circulation ratio is kept at 30-50, and low and intermediate solid circulation ratios are kept at 1-29. The solid circulation ratios of the circulating fluidized bed are controlled by regulating the start frequency and the start time of a slag discharge valve of the ratio-adjustable circulating fluidized bed. The low and intermediate solid circulation ratios are adopted to obtain the pyrolytic oil used as fuel oil, and the high solid circulation ratio is adopted to obtain the pyrolytic oil used for extracting industrial chemicals. The method adopts a mode of circulating fluidized bed so as to increase the gas-solid heat transfer effect and realize that the sludge pyrolytic oil with different uses is obtained in the same circulating fluidized bed reactor.

Description

technical field [0001] The invention belongs to the field of solid waste resource disposal, and relates to a method for obtaining sludge pyrolysis oil with different uses 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 of c...

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Application Information

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IPC IPC(8): C10G1/00C10B53/00C10B49/10C10B49/22C02F11/10
CPCY02W10/40
Inventor 孙国平金保昇孙宇左武贾纪强冯四平黄亚继张勇祁红
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