CN1212900C - Method for preparing building block sintered from oil field mud - Google Patents
Method for preparing building block sintered from oil field mud Download PDFInfo
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- CN1212900C CN1212900C CN 03125450 CN03125450A CN1212900C CN 1212900 C CN1212900 C CN 1212900C CN 03125450 CN03125450 CN 03125450 CN 03125450 A CN03125450 A CN 03125450A CN 1212900 C CN1212900 C CN 1212900C
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- oil field
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- field sludge
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Abstract
The present invention relates to a method for sintering building blocks by sludge in oil fields, which comprises the following steps: 1, compounding: raw materials, 20 wt% to 80 wt% of clay soil, 20 wt% to 80 wt% of sludge in oil fields, and auxiliary materials accounting for 0.1 wt% to 30 wt% of the clay soil and the sludge in oil fields, are compounded with the soluble salt content lower than 0.5%; 2, mixing the materials by adopting two modes: (1) mixing the material by a dry method or a semi-dry method; (2) mixing the material by a wet method; 3, aging for 1 day to 7 days; 4, forming by the semi-dry method or a dry press method with the forming pressure larger than 4.0MPa; 5, drying; 6, sintering: the dried product is put into a high-temperature furnace to be sintered at the sintering temperature of 800 DEG C to 1200 DEG C, and the product is obtained by cooling after the temperature of a high-temperature zone is kept for 1 h to 3h. The present invention recycles the sludge in oil fields as a resource, changes waste into valuable articles, and protects the environment.
Description
Technical field
The invention belongs to building material technical field, particularly use the method for oil field sludge sintered building building block.
Background technology
Oil field sludge is the byproduct of disposing polluted water in oil, comes from the reaction product of material in solid particle (tiny landwaste, clay or the mud of oil-bearing layer such as sandstone, limestone) that crude oil extraction liquid takes ground to and the container.Its Main Ingredients and Appearance is different with the difference of geology condition, production technology, and Main Ingredients and Appearance is calcium carbonate, mineral oil, silicate, moisture content and soluble-salt etc. usually.The oily sludge outward appearance of press filtration after treatment is pitchy or grey blocks of solid, and tangible oil flavor is arranged.More than 450 at present domestic existing oil field, a large amount of oil field sludges that oil exploitation produced, except that fraction uses as mud circulation in the drilling well, also have a small amount of oily sludge after treatment to be used for agriculture and forestry, to pave the way or to carry out landfill, burning etc., more oily sludge then is to stack with selecting, sometimes even do not stint and occupy a large amount of arable lands.Owing to contain soluble-salt, a small amount of poisonous metal and a certain amount of mineral wet goods composition in the mud, therefore not only directly polluted soil, surface water and underground water, and caused the loss waste of petroleum resources.According to estimates, China produces nearly 3,000,000 tons of oily sludge per year, along with most of oilfield exploitations enter " three height " stage, keep crude output will strengthen water injection rate, and the oily sludge growing amount also can increase thereupon.
Up to the present, owing to also lack economic, ripe oily sludge treatment technology.Air storage, landfill disposal mode have caused serious pollution to the soil and the water body environment of locality, so oily sludge has become the heavy burden of oil play.From protection environment and economic angle, how to handle oily sludge better, to its development and use of carrying out the degree of depth, turn waste into wealth, be the problem that people paid close attention to always.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of with oil field sludge for the raw material sintering prepares the method for building block, its objective is to make oil field sludge become resource reutilization, turn waste into wealth protection environment, and make full use of fuel oil heat in the mud.
Technical scheme of the present invention is: the preparation method of oil field sludge sintered building building block with oil field sludge, clay, auxiliary material mix, can add entry when needing; After batch mixing, ageing, moulding, drying and sintering process processing, make it to become building block.
Its concrete preparation method is as follows:
1. raw material is handled
Oil field sludge generally contains the soluble-salt composition, soluble-salt is in the building block dry run or in using, can form " scum " phenomenon on the surface, scum causes surface layer peeling and short texture, intensity is descended, therefore will carry out the desalinization of soil by flooding or leaching to oil field sludge and handle, the method that the desalinization of soil by flooding or leaching is handled is controlled at below 0.5% the soluble-salt content in the goods for washing.To raw clay, preferably control its granularity below 100 orders, to improve Dispersion of Clay and caking property.
2. prepare burden
With raw material by weight, clay 20～80, oil field sludge 20～80 adds auxiliary material for 0.1～30% of clay and oil field sludge total amount, prepares burden.Auxiliary material can be one or more the mixture in binding agent and the industrial residue, and the component of mixture is any proportioning.Described binding agent is any one or the mixing more than two kinds in brick and tile binding agent and the waterglass etc., is any proportioning during mixing more than two kinds.Described industrial residue is any one or the mixing more than two kinds in slag and the flyash etc., is any proportioning during mixing more than two kinds.The effect of auxiliary material: strengthen the intensity of building block, reduce the influence of " scum ", reduce sintering temperature, improve the physics and the chemical property of material, help improving Products Quality.
Because the clay quality of various places differs, same oil field also exists bigger difference at its mud composition of different times, therefore each proportion of raw materials amount will be according to raw materials used chemical composition, mineral composition and selected technological process in the prescription, take all factors into consideration as factors such as mixing method, molding mode, briquetting pressure, sintering schedules, formulate reasonably prescription according to above-mentioned value range.
3. batch mixing
The purpose of batch mixing is in order to allow raw material disperse fully and to mix.Batch mixing can adopt dual mode: 1. dry method or semidry method batch mixing: adopt and both raw material fully can be mixed, and again can be best to the mode that raw material is further pulverized.When material moisture content is crossed when low, then supplementing water to compound moisture content at 4-10%.The method that is characterized in is simple, easy operating.2. material by wet type mixing: add the water of total inventory 30-50%, carry out wet-mixing, after mixing, compound is dried to the moisture content 4-10% that is fit to moulding, carry out compound abrasive as adopting ball mill.It is very even to be characterized in that raw material mixes, and feed particles is tiny simultaneously, and sludge content can strengthen in the prescription, burns back product strength height, and presentation quality is better.
4. ageing
Water content behind the batch mixing is met the requirements of material carry out ageing.Ageing can make the further homogenizing of each composition in the raw material, helps improving material performance, improves the quality of products.The digestion time process generally needs 1～7 day.
5. moulding
Forming method and briquetting pressure are very big to the product quality influence, and forming method can adopt extrusion modling or compression moulding.During extrusion modling, material water content height, briquetting pressure is less, and the intensity of goods is not as the compression moulding height, but technical process is simple relatively.For the content that improves oil field sludge in the prescription and the intensity of product, preferably adopt half-dried platen press or dry pressure formed, briquetting pressure is big as far as possible, to guarantee the intensity of product.Briquetting pressure is controlled at greater than 4.0MPa.
6. dry
Goods after the moulding can carry out drying, also air dry in the open in hothouse.
7. sintering
Dried goods are put into the high temperature kiln roasting, in the roasting process, all should keep good oxidizing atmosphere, sintering range is 800-1200 ℃, need be incubated 1～3 hour at high temperature furnace, makes it to be sintered to the building block with certain intensity.
This preparation method's advantage is: 1. oil field sludge uses as the Main Ingredients and Appearance of building block, and treating capacity is big, not only can consume mud effectively, can also save the clay in the building block, helps protecting farmland; 2. mud is adopted the method for sintering curing, eliminated the pollution of heavy metal environment; 3. be that high temperature sintering is handled owing to what oil field sludge was carried out, oil in the mud at high temperature can fully burn, therefore not only can utilize the heat energy of mud intermediate fuel oil fully, can also reduce the sintering cost, be the not only treatment measures of economy but also environmental protection; Therefore 4. the building block after firing can obtain the bigger porosity, has that unit weight is light, the characteristic of heat-insulation and heat-preservation, is a kind of ecological architectural material with applications well prospect.
Adopt the building block of above method preparation, its sample goods compression strength can reach 70MPa, therefore can be widely used in load-bearing and non-bearing wall body, in actual industrial production, can also be made into the porous building block, be a kind of method of effectively utilizing oil field sludge, have very good prospects for application.
The specific embodiment
Embodiment 1:
Used clay and oily sludge chemical analysis are as shown in the table among this preparation method.
| Project | SiO 2 | Al 2O 3 | Fe 2O 3 | CaO | MgO | K 2O | NaO | Soluble salt | Loss on ignition | |
| Mineral oil | Other | |||||||||
| Oil field sludge | 2.5 | 3.2 | 0.8 | 38.5 | 2.2 | 0.5 | 0.2 | 1.5 | 17.1 | 31.2 |
| Clay | 69.5 | 16.8 | 5.8 | 0.6 | 0.2 | 2.3 | 0.3 | / | 4.5 | |
After above-mentioned clay and oil field sludge pulverized, be to prepare burden at 70: 30 by weight, add the brick and tile binding agent of clay and oil field sludge gross weight 0.2%, this binding agent can improve sample intensity, reduce shrinkage factor and crackle.The mode that adopt to stir is mixed material, and adding entry to compound moisture content while stirring is 7.5-8.5%, after mixing, is placed in the polybag of sealing and carries out ageing.After the ageing 48 hours, compression moulding is the sample of Φ 40mm * 10mm specification on press, and briquetting pressure is 8.0MPa.With the goods after the moulding put into baking oven 100 ℃ dry two hours down, take out and put into the high temperature kiln roasting, in 1050 ℃ of insulations after 1.5 hours down, with stove cool off product.Sintered specimen after tested, its compression strength is 36.5MPa, unit weight is 2.0g/cm
3, the porosity is 18.7%.
Embodiment 2:
Take by weighing oil field sludge 500 grams among the embodiment 1, after in 500ml water, fully eluriating, remove by filter most of soluble-salt.With the clay among the embodiment 1 and the oil field sludge after the desalinization of soil by flooding or leaching is handled is to carry out weighing at 50: 50 by weight, adds the water of oil field sludge and clay gross weight 35% and the waterglass of oil field sludge and clay gross weight 0.5%.Above-mentioned material is placed the ball mill ball milling, and the control granularity is surplus less than 15% at 10000-hole sieve.It is 5.0-6.5% that slip is poured out back air dry to moisture content, places the polybag of sealing to carry out ageing.After the ageing 36 hours, compression moulding is the sample of Φ 60mm * 50mm specification on press, and briquetting pressure is 12.0MPa.After 5 days, place the high temperature kiln roasting in outdoor air dry, 1100 ℃ of down insulations after two hours, with stove cool off product.Sintered specimen after tested, its compression strength is 16.3MPa, unit weight is 1.7g/cm
3, the porosity is 25.6%.
Embodiment 3:
Clay among the embodiment 1 and oil field sludge are made into major ingredient in 65: 35 ratio, adding the flyash of clay and oil field sludge total amount 25% and the waterglass of oil field sludge and clay gross weight 0.5% expects as auxiliary, above-mentioned material is placed ball mill, the water that adds material total amount 40%, carry out ball milling then, the granularity of control material is surplus less than 12% at 10000-hole sieve.It is 4.5-5.5% that slip is poured out back air dry to moisture content, places the polybag of sealing to carry out ageing.After the ageing 36 hours, compression moulding is the sample of Φ 60mm * 50mm specification on press, and briquetting pressure is 15.0MPa.After 5 days, place the high temperature kiln roasting in outdoor air dry, 1050 ℃ of down insulations after two hours, with stove cool off product.Sintered specimen after tested, its compression strength is 19.6MPa, unit weight is 1.6g/cm
3, the porosity is 22.4%.
Claims (6)
1. the preparation method of oil field sludge sintered building building block is characterized in that may further comprise the steps:
1). batching:
With raw material by weight, clay 20～80, oil field sludge 20～80, add auxiliary material for 0.1～30% of clay and oil field sludge total amount, prepare burden, the soluble-salt content in described total dosage is controlled at below 0.5%, if greater than this value, then to carry out the desalinization of soil by flooding or leaching and handle oil field sludge;
2). batch mixing:
Batch mixing can adopt dual mode: 1. dry method or semidry method batch mixing: raw material is fully mixed, adjust the 4-10% that compound moisture content accounts for gross weight; 2. material by wet type mixing: add the water of total inventory 30-50%, carry out wet-mixing, be dried to the 4-10% that moisture content accounts for gross weight then, carry out compound abrasive as adopting ball mill;
3). ageing:
The material that water content behind the batch mixing is reached 4-10% carries out ageing, digestion time 1-7 days;
4). moulding
Adopt half-dried platen press or dry pressure formed, briquetting pressure is greater than 4.0MPa;
5). drying:
Goods after the moulding can carry out drying, also air dry in the open in hothouse;
6). sintering:
Dried goods are put into the high temperature kiln roasting, and sintering temperature is 800-1200 ℃, after high temperature furnace insulation 1～3 hour, with stove cool off product.
2. the preparation method of oil field sludge sintered building according to claim 1 building block is characterized in that: described oil field sludge soluble-salt content is washing greater than the method for carrying out desalinization of soil by flooding or leaching processing at 0.5% o'clock.
3. the preparation method of oil field sludge sintered building according to claim 1 building block is characterized in that: described clay, its granularity is the smaller the better, preferably is controlled at below 100 orders.
4. the preparation method of oil field sludge sintered building according to claim 1 building block is characterized in that: describedly add auxiliary material and be one or more the mixture in binding agent and the industrial residue, the component of mixture is any proportioning.
5. the preparation method of oil field sludge sintered building according to claim 4 building block is characterized in that: described binding agent is the mixing of any one or two kinds in brick and tile binding agent and the waterglass, and two kinds is any proportioning when mixing.
6. the preparation method of oil field sludge sintered building according to claim 4 building block is characterized in that: described industrial residue is any one or the two kinds of mixing in slag and the flyash, and two kinds is any proportioning when mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03125450 CN1212900C (en) | 2003-09-25 | 2003-09-25 | Method for preparing building block sintered from oil field mud |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03125450 CN1212900C (en) | 2003-09-25 | 2003-09-25 | Method for preparing building block sintered from oil field mud |
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| CN1528530A CN1528530A (en) | 2004-09-15 |
| CN1212900C true CN1212900C (en) | 2005-08-03 |
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| CN 03125450 Expired - Fee Related CN1212900C (en) | 2003-09-25 | 2003-09-25 | Method for preparing building block sintered from oil field mud |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272342A (en) * | 2015-11-12 | 2016-01-27 | 山东洁康环保科技有限公司 | Foamed ceramic heat insulation board and preparation method thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481228B (en) * | 2008-01-08 | 2011-07-27 | 中欣工程行股份有限公司 | Method for sintering stiffener from waste sludge |
| CN109053142A (en) * | 2018-09-12 | 2018-12-21 | 上海环辉智能科技有限公司 | A kind of method and its Lightweight clinker brick preparing Lightweight clinker brick using oily sludge |
| CN109293190B (en) * | 2018-11-02 | 2020-07-24 | 南华大学 | Treatment method of oily sludge |
| CN111516128A (en) * | 2020-04-14 | 2020-08-11 | 广西博世科环保科技股份有限公司 | Resource treatment method for high-concentration petroleum hydrocarbon contaminated soil |
| CN111807814A (en) * | 2020-06-16 | 2020-10-23 | 日昌升建筑新材料设计研究院有限公司 | Process for preparing sintered heat-insulation building block from filter cake |
| CN112110621A (en) * | 2020-06-22 | 2020-12-22 | 常州桂城环保建材股份有限公司 | Sludge curing agent |
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2003
- 2003-09-25 CN CN 03125450 patent/CN1212900C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272342A (en) * | 2015-11-12 | 2016-01-27 | 山东洁康环保科技有限公司 | Foamed ceramic heat insulation board and preparation method thereof |
| CN105272342B (en) * | 2015-11-12 | 2019-12-03 | 铜仁学院 | Foamed ceramic heat insulating board and preparation method thereof |
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| CN1528530A (en) | 2004-09-15 |
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