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Sludge treatment method and application thereof

A sludge treatment and sludge technology, applied in the application field of sludge treatment, can solve the problems of low treatment capacity per unit time, long residence time, low utilization rate of organic matter, etc., to achieve resource utilization, improve mass transfer and The effect of heat transfer rate, reaction rate acceleration

Active Publication Date: 2012-07-11
ENN ENVIROTECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method mainly uses high temperature to pyrolyze sludge to obtain biomass liquefied oil, but in this method, normal pressure is used, so the utilization rate of organic substances in sludge is extremely low, and the operation process needs Carried out in a reducing atmosphere or an inert atmosphere, which increases the operating cost and difficulty of operation
In addition, the residence time of the process is long, and the processing capacity per unit time is low.

Method used

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  • Sludge treatment method and application thereof
  • Sludge treatment method and application thereof
  • Sludge treatment method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Sand was removed by gravity sedimentation, and the raw sludge from municipal sludge was purified to form a slurry with a sludge concentration of 15 wt%. Then the slurry was put into a reactor, and the reactor was controlled at a temperature of 350° C. and a reaction pressure of 17.0 MPa, and the sludge was reacted for 10 minutes under these conditions.

[0032] After the above reaction is finished, the reactant is taken out from the reactor, cooled, and then distilled to obtain a liquid product, which is an oil product. The liquid product is measured by an Agilent gas chromatography mass spectrometer. As a result, it is known that in this product, naphtha The content of gasoline and diesel oil is 52wt%, the content of gasoline and diesel oil is 28wt%, and the content of fuel oil is 20wt%, and the rest are various impurities. Table 3 shows the reaction conditions of this example together with the results obtained by the above measurements.

[0033] The distillation rang...

Embodiment 2～16

[0037] Examples 2-16 were carried out with the operation similar to that of Example 1, except that the reaction conditions were different. The specific reaction conditions and reaction results are shown in Table 3.1-3.3.

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Abstract

The invention relates to a sludge treatment method for preparing oil products by liquefying sludge. The method comprises the step of performing liquefaction on the sludge in the subcritical or supercritical state of water to obtain the oil products. In addition, the invention also relates to application of the sludge treatment method to sludge treatment.

Description

technical field [0001] The invention relates to a sludge treatment method and its application, in particular, to a sludge treatment method comprising liquefying sludge under certain temperature and pressure conditions to prepare oil products, and the application of the method in sludge treatment application. Background technique [0002] In recent years, the generation of municipal sludge in my country has been continuously increasing. According to the "Notice on the Construction and Operation of National Urban Sewage Treatment Facilities in the Fourth Quarter of 2010", by the end of 2010, my country's urban sewage treatment volume reached 34.3 billion cubic meters. The amount of sludge generated during sewage treatment has also increased significantly. In 2010, the national sludge production volume was about 21.99 million tons, and 60,200 tons of sludge were generated every day. According to the current development speed, by the end of 2015, my country's annual sludge outp...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/10C10G1/00
Inventor 宋庆峰程乐明曹雅琴杜娟高志远宋成才张玉宝田文堂谷蔚赵晓
Owner ENN ENVIROTECH CO LTD
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