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System and method for obtaining oil and formed granular fuel by oil-containing sludge-biomass combined extrusion

An extrusion molding, pellet fuel technology, applied in the direction of biofuels, waste fuels, fuels, etc., can solve the problems of oily sludge pollution, etc., and achieve the effect of long processing cycle and high cost

Inactive Publication Date: 2021-03-02
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a system and method for obtaining oil and shaped granular fuel through joint extrusion of oily sludge and biomass, which can not only effectively solve the pollution problem of oily sludge, reduce the waste status of biomass, and recycle oily sludge At the same time, it can also obtain shaped pellet fuel with high calorific value, realizing the harmless and effective resource utilization of oily sludge

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  • System and method for obtaining oil and formed granular fuel by oil-containing sludge-biomass combined extrusion

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A system for oily sludge-biomass co-extrusion to obtain oil and shaped granular fuel, the system includes an oily sludge homogenization unit, a biomass homogenization unit, a crushing and screening device, a material mixing unit, a water-containing Rate adjustment unit, mechanical extrusion molding device, water / oil separation unit, waste water treatment unit, waste gas treatment unit, waste gas collection device and shaped particle baking unit.

[0026] The oily sludge used in the experiment was taken from an oil refinery in Panjin City. It is dark brown at room temperature, semi-solid and sticky, accompanied by a pungent petroleum gas smell. The oily sludge has a moisture content of 51.05% and an oil content of 28.00 %, solid content 20.95%; choose dry pine sawdust to mix with oily sludge, the mixed sample is fluffy; after mixing the two materials, the viscosity and compressibility of the oily sludge are improved, making the oily sludge loose and porous .

[0027] Af...

Embodiment 2

[0029]After the oily sludge is homogenized by the oily sludge homogenization unit, it is ready for use; after the pine wood chips pass through the crushing and screening device, 40-60 mesh pine wood chips are selected as raw materials; the above two materials are fully mixed at a dry weight ratio of 1:1 The obtained mixture has a moisture content of 52.15% on a dry basis, without adjusting the moisture content, weighs about 4.00g (about 2.65g of oily sludge) of the mixture into a universal machine for mechanical extrusion, under 50MPa, at 10mm / min Apply force at the pre-tightening speed. After the pressure reaches the pre-tightening force (0.314kN), pressurize at a pressurization speed of 0.1kN / s. The target pressure is 15.7kN. After reaching the target pressure, keep it for 60s. At this point, the extrusion process is completed and the separated Liquid phase and solid particles; solid particles enter the shaped particle baking unit and bake at 150°C for 30 minutes to obtain sh...

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Abstract

The invention relates to a system and a method for obtaining oil and formed granular fuel by oil-containing sludge-biomass combined extrusion, which aim to solve the problems of large secondary pollution, high cost and the like of hazardous waste oil-containing sludge harmlessness and reclamation. The specific process comprises steps of mixing oil-containing sludge and biomass into a mechanicallyextruded raw material, separating a liquid phase from a solid phase after extruding under a certain pressure, wherein the liquid phase is a water / oil mixture, water and oil are separated after the water / oil mixture passes through the water / oil separation unit, crude oil is obtained, and crude oil recovery is achieved, enabling the water to return to the water content adjusting unit through circulation or return to the water content adjusting unit after passing through the wastewater treatment unit, wherein the solid phase is formed particles, and the formed particles are baked at a certain temperature to form formed particle fuel, and in the baking process, enabling residual moisture and part of oil in the particles to be volatilized from the particles, and treated and discharged by the waste gas treatment unit. According to the process, the purposes of harmlessness and reclamation of the oil-containing sludge are achieved, and meanwhile secondary pollution generated in the process isavoided.

Description

technical field [0001] The invention belongs to the field of recycling and utilization of oily sludge resources, and relates to a new treatment method for resourceful oily sludge, specifically refers to a system for recovering oil through joint extrusion of oily sludge and biomass, and simultaneously obtaining shaped granular fuels and method. Background technique [0002] Oily sludge is a typical solid waste produced by the petrochemical industry. With the increasing demand for oil, the "blood" of modern industry, the production of oily sludge is also increasing. The composition of oily sludge is complex and harmful. , exists in a stable colloidal dispersion system (water-in-oil and oil-in-water, etc.), it is difficult to achieve three-phase separation with conventional treatment and disposal methods, and it is difficult to handle; the "National Hazardous Waste List" released in 2016 included oily sludge , it is very urgent to solve the pollution problem of oily sludge. A...

Claims

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Application Information

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IPC IPC(8): C10L5/46
CPCC10L5/46Y02E50/10Y02E50/30
Inventor 张雷杨睿丽李爱民
Owner DALIAN UNIV OF TECH