Method for producing brick from oil sludge and coal gangue

A technology of coal gangue and oil sludge, which is applied in the field of brick production, can solve the problems of water body, atmospheric environment pollution, accumulation and occupation of land, etc., and achieve the effects of protecting the environment, saving energy, and reducing the leachability of harmful substances.

Inactive Publication Date: 2010-11-24
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The discharged coal gangue not only accumulates and occupies land, but also

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example one:

[0014] Based on the total mass of the brick body, its components and mass percentages are 15% sludge, 25% coal gangue, 50% clay, 8% water, and 2% modified additives.

[0015] The sludge is oilfield scum sludge with 29% oil and 66% water content.

[0016] The components and mass percentages of the modified additives are 40% calcium oxide, 25% iron trioxide, 15% sodium phosphate and 20% calcium polystyrene sulfonate.

[0017] The production method is as follows: mix oil sludge, coal gangue, clay and modified additives in a mixing equipment and use a wheel to roll them, then add water and mix again, and use a hydraulic or extrusion brick machine to squeeze the above mixture The bricks of different shapes and sizes are pressed, and the bricks are dried by natural drying or the waste heat of the roasting kiln so that the moisture content of the bricks is 10%. The dried bricks are sintered at a high temperature of 1000°C for 3 hours to obtain the finished product.

Example Embodiment

[0018] Embodiment two:

[0019] Based on the total mass of the brick body, its components and mass percentages are 18% sludge, 28% coal gangue, 41.5% clay, 10% water, and 2.5% modified additives.

[0020] The sludge is oil field tank bottom sludge with 34% oil content and 61% water content.

[0021] The components and mass percentages of the modified additives are 42% calcium oxide, 23% iron trioxide, 16% sodium phosphate and 19% calcium polystyrene sulfonate.

[0022] The production method is as follows: mix oil sludge, coal gangue, clay and modified additives in a mixing equipment and use a wheel to roll them, then add water and mix again, and use a hydraulic or extrusion brick machine to squeeze the above mixture Press the bricks of different shapes and sizes, use natural drying or use the waste heat of the roasting kiln to dry the bricks so that the moisture content of the bricks is 13%, and sinter the dried bricks at a high temperature of 1100°C for 2 hours and 30 minutes to obta...

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PUM

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Abstract

The invention relates to a method for producing a brick from oil sludge and coal gangue as raw materials. The brick comprises the following components in percentage by weight: 10 to 20 percent of oilfield oil sludge, 10 to 30 percent of coal gangue, 40 to 65 percent of clay, 5 to 20 percent of water and 0.5 to 3 percent of modifying additive. The method comprises the following steps of: stirring the components uniformly in a stirring device to form a semi-finished brick blank, and drying and roasting the brick blank to form a finished product of the brick. By combining an internal combustion process for manufacturing the brick by sintering and making full use of heat values of the oil sludge and the coal gangue, the method reduces external fuels during roasting, saves a large amount of energy, meanwhile solves the treatment problem of the oil sludge and the coal gangue, and protects the environment. The brick manufacturing method is simple, has low cost, realizes reduced, harmless and recycling requirements of solid waste treatment, and has good market prospect and popularization value.

Description

Technical field: [0001] The invention relates to a recycling technology of solid waste, in particular to using oil sludge and coal gangue as raw materials to produce bricks. Background technique: [0002] Oil sludge is one of the main pollution sources of oil production, and it is also a major problem affecting the quality of oil fields and surrounding environments. The composition of oil sludge is extremely complex, mainly composed of three parts: water, sediment and oil. The three parts are in a very stable suspended emulsification state, and contain a large amount of additives and various toxic and harmful substances. It has been listed as hazardous solid waste at present. . As most oilfields enter the mid-to-late stage of production, the water content in the produced oil is getting higher and higher, and the output of oil sludge will continue to increase. [0003] Coal gangue is one of the largest industrial wastes in my country. It is a solid waste discharged in the p...

Claims

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Application Information

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IPC IPC(8): C04B33/132
CPCY02P40/60
Inventor 高洪阁张大松王涛
Owner SHANDONG UNIV OF SCI & TECH
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