CN103113008A

CN103113008A - Method for recycling oil-containing sludge sand

Info

Publication number: CN103113008A
Application number: CN 201210261567
Authority: CN
Inventors: 张俊峰; 梁玉海
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-20
Filing date: 2012-07-20
Publication date: 2013-05-22

Abstract

The invention provides a method for recycling waste oil-containing sludge sand. The technical scheme is as follows: the method comprises the following steps: carrying out oil-water-sludge-sand separation, and researching the particle size composition of the oil-containing sludge sand by a sieve analysis process, wherein the particle size distribution of the oil-containing sludge sand is mainly concentrated at 0.1-0.85mm, the yield is 90%, the average particle size is 0.23mm, the sludge content is 1.74%, and the oil-containing sludge sand is suitable for making baking-free bricks; and adding 15-50% of cement, 10-30% of gravel, 1-10% of curing agent and 20-50% of clear water into the separated sand, stirring in a stirrer to make mortar, transmitting into a molding press by a transmission band, and carrying out molding pressing to obtain the mechanically pressed baking-free bricks. The invention effectively solves the problem that the sludge sand pollutes the soil and environment, saves the precious energy sources and abundant funds, can generate huge social benefit and economic benefit, and is suitable for wide popularization and use.

Description

A kind of method of oily sandy sludge recycling

Technical field:

The present invention relates to a kind of method of utilizing of oily sandy sludge, especially a kind of method of oily sandy sludge recycling.

Background technology:

At present, oily sandy sludge is mainly that the oil field produces in petroleum prospecting, exploitation, the composition of oily sandy sludge own is comparatively complicated, contain a large amount of aging crude oil, wax, colloid, suspended solid, salt, sour gas etc., the existence of these compositions causes to decompose fully under natural condition needs the years up to a hundred; Oily sludge directly effluxes and can take a large amount of soils, and toxic substance meeting polluted water, soil and air that it contains worsen ecotope; At present, Sludge in Oilfields sand is put into the oily waste class (HW08 item) in " national Hazardous wastes catalogue ", and (16 * 108t/a) estimations have the oil sludge and sand of nearly 1,000,000 tons to produce every year according to the present crude production rate of China, seriously polluted, need to be resolved hurrily.

Summary of the invention

Purpose of the present invention is exactly the defective that exists for prior art, and the method for a kind of oily sandy sludge recycling of utilization of waste material is provided.Its technical scheme is: first oily sandy sludge is carried out oil, water, mud, four separation of sand, work out the size composition of oil sludge and sand with the screen analysis method, the size-grade distribution of oil sludge and sand mainly concentrates on 0.1-0.85mm, productive rate is 90%, mean particle size is 0.23mm, silt content is 1.74%, is fit to make non-burning brick.

Non-burning brick fabrication processing is: the sand after separation adds 15%-50% cement, 10%-30% gravel, 1%-10% solidifying agent, 20%-50% clear water and stirs the making mortar in stirrer, then be sent to transport tape and carry out mold pressing in moulding press and namely make machine and press non-burning brickly, can make the azulejo of different colours through further increasing fabric.Reach MU15 through the sampling Detection strength grade, the indexs such as size deviation, outward appearance, freeze thawing, scum, lime blowing satisfy the building material products such as vitrified brick of the index request of national standard, the inside and outside radioactive indicator IRa=0.176 of vitrified brick, Ir=0.248, desired value (IRa=1 far below national Specification, Ir=1), can use under any condition.Can be applicable to lay ground, build and spend pond, block courtyard wall etc., average every brick oil sludge and sand 30-60% processes with solidification method with traditional burning and compares the recycling of having realized refuse.

mud sand processing technique flow process is: oily sandy sludge enters sand-washing device through sand pump in the pond, after sand-washing device cleans separation, sand is disposed to the washed-out sand tank, the sand-washing device overflow sewage, sump oil, mud goes back to sump oil silt particle pond and reclaims, add the joint station oil extraction-generated waste water to mix in the washed-out sand tank, opening the tank top agitator carries out stirring while rinsing, mixed sand water liquid is promoted to thickener by concentrate pump, and to carry out secondary cleaning concentrated, sand after concentrated enters concentration tank and concentrates, the thickener overflow liquid flows back to mud sand pond, long-pending sand in concentration tank regularly discharges, drain into transfer roller be promoted to vibratory screening apparatus carry out sand moisture from, sewage is squeezed into the joint station waste disposal plant through sump pump and is processed by the oil recovery factory.

The present invention has effectively solved the problem of mud sand contaminated soil and environment, and refuse is become renewable resource, has saved the valuable energy and a large amount of funds, can have a tremendous social and economic benefits, and is fit to generally promote the use of.

Description of drawings

Fig. 1 is the size composition figure of oil sludge and sand of the present invention;

Fig. 2 is mud sand processing technique schema of the present invention;

Fig. 3 is the non-burning brick fabrication processing figure of the present invention.

Embodiment:

Oily sandy sludge is carried out oil, water, mud, four separation of sand, see Fig. 1 with the size composition test result of screen analysis method Research on Oil silt particle.

By the screen analysis result as seen, the size-grade distribution of oil sludge and sand mainly concentrates on 0.1-0.85mm, and productive rate is 90%, and mean particle size is 0.23mm, and silt content is 1.74%, is fit to make non-burning brick.through repetition test, sand after finding to separate adds 15%-50% cement in stirrer, the 10%-30% gravel, the 1%-10% solidifying agent, the 20%-50% clear water stirs the making mortar, then be sent to transport tape and carry out mold pressing in moulding press and namely make machine and press non-burning brick, can make the azulejo of different colours through further increasing fabric, reach MU15 through the sampling Detection strength grade, size deviation, outward appearance, freeze thawing, scum, the indexs such as lime blowing satisfy the building material products such as vitrified brick of the index request of national standard, the inside and outside radioactive indicator IRa=0.176 of vitrified brick, Ir=0.248, desired value (IRa=1 far below national Specification, Ir=1, ), can use under any condition.Can be applicable to lay ground, build and spend pond, block courtyard wall etc., average every brick oil sludge and sand 30-60% processes with solidification method with traditional burning and compares the recycling of having realized refuse.

, detect through experiment and find that non-burning brick ultimate compression strength reduces greatly greater than 60% the time when the oil sludge and sand consumption, do not meet relevant national standard, same, we are by great many of experiments and detect and confirm that cement amount must not be lower than 15%, otherwise the indexs such as ultimate compression strength will descend.

Mud sand processing technique flow process is: oily sandy sludge enters sand-washing device through sand pump in the pond, after sand-washing device cleans separation, sand is disposed to the washed-out sand tank, sand-washing device overflow sewage sump oil mud goes back to sump oil silt particle pond and reclaims, add the joint station oil extraction-generated waste water to mix in the washed-out sand tank, open the tank top agitator and carry out stirring while rinsing; Mixed sand water liquid is promoted to thickener by concentrate pump, and to carry out secondary cleaning concentrated, and the sand after concentrated enters concentration tank and concentrates, and the thickener overflow liquid flows back to mud sand pond; Long-pending sand in concentration tank regularly discharges, drain into transfer roller be promoted to vibratory screening apparatus carry out sand moisture from; Sewage is squeezed into the joint station waste disposal plant through sump pump and is processed by the oil recovery factory, and schema is seen Fig. 2.

Non-burning brick fabrication processing is: the sand after separation adds 15%-50% cement, 10%-30% gravel, 1%-10% solidifying agent, 20%-50% clear water and stirs the making mortar in stirrer, then be sent to transport tape and carry out mold pressing in moulding press and namely make machine and press non-burning brickly, can make the azulejo of different colours through further increasing fabric.Reach MU15 through the sampling Detection strength grade, the indexs such as size deviation, outward appearance, freeze thawing, scum, lime blowing satisfy the building material products such as vitrified brick of the index request of national standard, the inside and outside radioactive indicator IRa=0.176 of vitrified brick, Ir=0.248, desired value (IRa=1 far below national Specification, Ir=1), can use under any condition.Can be applicable to lay ground, build and spend pond, block courtyard wall etc., average every brick oil sludge and sand 30-60% processes with solidification method with traditional burning and compares the recycling of having realized refuse.Its process flow sheet is seen Fig. 3.

Claims

1. the method for an oily sandy sludge recycling, it is characterized in that: first oily sandy sludge is carried out oil, water, mud, four separation of sand, work out the size composition of oil sludge and sand with the screen analysis method, the size-grade distribution of oil sludge and sand mainly concentrates on 0.10.85mm, productive rate is 90%, mean particle size is 0.23mm, and silt content is 1.74%, is fit to make non-burning brick.

2. the method for a kind of oily sandy sludge recycling according to claim 1, it is characterized in that: the sand after separation adds 15%-50% cement, 10%-30% gravel, 1%-10% solidifying agent, 20%-50% clear water and stirs the making mortar in stirrer, then be sent to transport tape and carry out mold pressing in moulding press and namely make machine and press non-burning brickly, can make the azulejo of different colours through further increasing fabric.

3. the method for a kind of oily sandy sludge recycling according to claim 2, it is characterized in that: oily sandy sludge enters sand-washing device through sand pump in the pond, after sand-washing device cleans separation, sand is disposed to the washed-out sand tank, the sand-washing device overflow sewage, sump oil, mud goes back to sump oil silt particle pond and reclaims, add the joint station oil extraction-generated waste water to mix in the washed-out sand tank, opening the tank top agitator carries out stirring while rinsing, mixed sand water liquid is promoted to thickener by concentrate pump, and to carry out secondary cleaning concentrated, sand after concentrated enters concentration tank and concentrates, the thickener overflow liquid flows back to mud sand pond, long-pending sand in concentration tank regularly discharges, drain into transfer roller be promoted to vibratory screening apparatus carry out sand moisture from, sewage is squeezed into the joint station waste disposal plant through sump pump and is processed by the oil recovery factory.

4. the method for a kind of oily sandy sludge recycling according to claim 3, is characterized in that: non-burning brick inside and outside radioactive indicator IRa=0.176, Ir=0.248.