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Method for preparing raw oil from sludge

A technology for raw oil and sludge, used in sludge treatment, chemical instruments and methods, preparation of liquid hydrocarbon mixtures, etc., can solve problems such as secondary pollution of the environment, achieve reduced emissions, high resource utilization, and land saving and the effect of fuel resources

Active Publication Date: 2014-07-16
长沙源宏环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Toxic substances are solidified in building materials to a certain extent, and there is a risk of secondary pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing raw oil from sludge, the specific steps are:

[0032] (1) Mechanically dewater the wet sludge so that the water content of the wet sludge is 65%-75% to obtain sludge intermediates;

[0033] (2) Add desulfurizer, deodorant and catalyst to the sludge intermediate, mix and stir, and dehydrate again so that the water content of the sludge is below 40%, forming dry sludge; the desulfurizer is carbide slag, The amount of desulfurizer accounts for 0.5% of the mass of the sludge intermediate; the amount of the deodorant is 3% of the mass of the sludge intermediate; the amount of the catalyst is 0.3% of the mass of the sludge intermediate; the deodorant is wood chips. The catalyst is composed of manganese, silicon, aluminum, calcium, sodium, iron and magnesium, wherein manganese accounts for 1.5% of the mass of the sludge intermediate, silicon accounts for 1% of the mass of the sludge intermediate, and aluminum accounts for 1% of the mass of the sludge int...

Embodiment 2

[0040] A method for preparing raw oil from sludge, the specific steps are:

[0041] Steps (1) and (2) are the same as in Example 1, but the catalyst is changed. The catalyst is composed of manganese, silicon, aluminum, calcium, sodium, iron and magnesium, wherein manganese accounts for 1% of the mass of the sludge intermediate , silicon accounts for 0.8% of the mass of sludge intermediates, aluminum accounts for 0.8% of the mass of sludge intermediates, calcium accounts for 0.8% of the mass of sludge intermediates, sodium accounts for 0.1% of the mass of sludge intermediates, and iron accounts for the middle of sludge 0.4% of the body mass, and magnesium accounts for 0.1% of the mass of the sludge intermediate;

[0042] In step (3), take 100 kg of sludge with a water content of less than 20%, and carry out catalytic cracking reaction. The reaction time is controlled at 20 minutes, and the temperature is controlled at 400°C. After the cracking reaction, mixed steam and slag ar...

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Abstract

The invention belongs to the field of sludge treatment, and in particular relates to a method for preparing raw oil from sludge. The method comprises the steps of performing mechanical dehydration on wet sludge to obtain a sludge intermediate; then adding a desulfurizing agent, a deodorizer and a catalyst into the sludge intermediate, mixing, and dehydrating again to ensure that the water content of the sludge is less than 40% and form dry sludge; performing combined catalytic cracking reaction on the dry sludge, and collecting mixed gas from the top of a cracking kettle; and cooling the mixed gas through a cooler, performing gas-liquid separation to obtain gas and an oil-water mixture, separating the oil-water mixture through an oil-water separator, and then collecting the oil phase to obtain the raw oil. By adopting the method, the sludge can be converted into the raw oil, so that the waste is changed into valuable; organic matters in the sludge are converted into storable energy in the combined catalytic cracking manner, so that secondary pollution is avoided; the temperature adopted in the reaction is less than 500 DEG C, so that carcinogenic waste gases such as dioxin are not produced.

Description

technical field [0001] The invention belongs to the field of sludge treatment, and in particular relates to a method for preparing raw material oil from sludge. Background technique [0002] With the continuous increase in the amount of urban sewage treatment, the problem of sludge treatment from sewage treatment has become increasingly prominent. At present, landfill is mostly used for sludge treatment and disposal in my country, and the amount of sludge treated by other treatment methods is very small. Landfill sludge has a great impact on the surrounding environment and groundwater resources, and there is serious secondary pollution. According to incomplete statistics, more than hundreds of millions of tons of sludge have been landfilled in my country, and now the annual landfill volume exceeds 30 million tons. These landfilled sludge are still creating a large amount of new pollution, which has caused great harm to the surrounding environment. In the prior art, the tr...

Claims

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Application Information

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IPC IPC(8): C02F11/00C10G1/00
Inventor 章亮庄谢田皋章琳茂戴凡皓
Owner 长沙源宏环保科技有限公司
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