Process for making bio-diesel oil by using municipal sludge

A biodiesel, municipal sludge technology, applied in the petroleum industry, biofuels, sludge treatment and other directions, to achieve the effect of reducing investment in plant construction, reducing product costs, and reducing environmental pollution

Inactive Publication Date: 2007-05-16
任春山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the many problems caused by the above-mentioned urban sludge to the environment, and to invent a new method for treating urban sludge, using sludge as the main raw material to produce biodiesel, alleviating the serious problem of fuel shortage and improving environmental pollution situation

Method used

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  • Process for making bio-diesel oil by using municipal sludge

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Effect test

Embodiment 1

[0022] Biodiesel is produced from municipal sludge. The process of the present invention is composed of mechanical dehydration, tempering, evaporation, extrusion, stirring, reaction, distillation, blending, and filtration. The composition formula and its content (% by weight): sludge 70.5-56.5, solvent 20.0-40.0, additives 8.5-2.5, catalyst 1.0; the raw material is urban trench bottom sludge, or domestic sewage sedimentation sludge; solvents are rapeseed oil, kitchen waste oil, soybean oil, peanut oil, castor oil, corn oil, a Or mixed oil can be used; the auxiliary agent is methanol or cetyl alcohol; the catalyst is aluminum trichloride.

[0023] The process method is to pretreat the sludge at the bottom of urban road ditches, firstly through mechanical dehydration, so that the water content of the sludge is ≤ 65%, and then transfer to the sludge conditioning process, and add heavy oil with a viscosity of 10MPa·s, weight It is 6 times that of sludge, fully stirred evenly, and...

Embodiment 2

[0029] Biodiesel is produced from sludge. Raw material formula provided by the present invention and content (weight %) ratio thereof:

[0030] Sludge 63.5, solvent soybean oil (or kitchen waste oil) 30.0, additive cetyl alcohol 5.5, catalyst 1.0.

[0031] Weighing various raw materials:

[0032] 635kg of sludge, 300kg of soybean oil (or kitchen waste oil), 55kg of cetyl alcohol, and 10kg of catalyst; according to the amount of sludge, heavy oil with a viscosity of 10MPa s is added in the conditioning process, 5080kg, which is 8 times that of sludge; various raw materials Enter the stirring process, after fully stirring for 15 minutes, transfer to the reaction process, heat to 450 ° C, the reaction pressure is 6.8 MPa, and the reaction time is 50 minutes; enter the blending process, according to the test results of the gas oil, when the blending agent amyl nitrate When 2kg is added, the proportion of the blending agent is 0.2%, and qualified biodiesel can also be produced; t...

Embodiment 3

[0034] According to formula of the present invention and content (weight %) ratio thereof:

[0035] Sludge 56.5, solvent 40.0, additive 2.5, catalyst 1.0.

[0036] Weigh various raw materials, sludge is 565kg, solvent is peanut oil or castor oil 400kg, auxiliary agent is methanol 2.5kg, catalyst aluminum trichloride is 10kg; sludge is roadside ditch sludge. Sludge weight, add 7 times heavy oil 3920kg; Put the pretreated sludge and various raw materials into the mixer and stir for 14 minutes, then transfer to the reaction process, the reaction temperature is 500 ° C, the pressure is 6.5 MPa, and the time is 45 minutes; The detection and analysis result of the test, add blending agent pentyl nitrate 25kg altogether, account for 2.5% of gas oil; Other process conditions are all with embodiment 1.

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Abstract

The invention discloses a new technique of biological diesel through urban sludge in the energy domain, which comprises the following steps: allocating the component formula with 70.5-56.5% sludge, 20.0-40.0% solvent, 0.5-2.5% adjuvant and 1.0% catalyst; adopting urban sludge or living effluent mud as sludge; selecting the solvent form rape oil, soyabean oil, waste kitchen oil and arachis oil; setting carbinol as adjuvant and aluminium chloride as catalyst; stirring these materials completely for 10-15min; reacting under 400-600 Deg C at 5.5-9.0Mpa for 30-60min; heating to 360 Deg C to obtain the distillate oil (gas oil); transmitting to blending procedure; adding 0.2-1.0% amyl nitrate to generate the diesel.

Description

technical field [0001] The invention relates to the field of energy, in particular to a new process for preparing biodiesel by using urban sludge as the main raw material. Background technique [0002] The amount of urban domestic sewage and industrial wastewater in my country is increasing year by year, and the sludge content (in terms of dry weight) in domestic sewage is about 1.3 million tons, and the annual growth rate is greater than 10%, especially in cities and cities with a high level of urbanization in my country. If the urban sewage in the area is fully treated, it will produce 8.4 million tons of sludge (in terms of dry weight), and the sludge treatment volume is very outstanding. [0003] EU countries usually implement the hierarchical management principle of waste consumption, that is, recycling and priority incineration; the United States produced 6.9 million tons of dry sludge in 1998, 60% of which were effectively used, including direct fertilization of land a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C02F11/00
CPCY02E50/13Y02E50/10
Inventor 任春山
Owner 任春山
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