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Oleophylic ceramsite adopting oil-based drilling cutting residues obtained after thermal decomposition and preparation method of oleophylic ceramsite

An oil-based drill cuttings and thermal analysis technology, applied in ceramic products, applications, household appliances, etc., can solve the problems of not having lipophilic properties, increasing the strength of ceramsite, and restricting the production of raw materials, so as to achieve easy backwash regeneration, enhanced Oil removal performance, effect of saving clay or shale

Inactive Publication Date: 2017-03-22
SINOPEC ENERGY & ENVIRONMENTAL ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the main materials of water treatment filter materials are natural resources such as clay and shale, which not only restricts the production of raw materials, but also causes harm to the local environment
Although Publication Nos. CN102659390A, CN102584172A, CN104098321A, etc. are all for resource utilization of sludge, some need to add a certain amount of clay or sodium carboxymethylcellulose to increase viscosity, and some need to add chromium slag to reduce sintering temperature and increase pottery. Granular strength; moreover, the prepared ceramsite is and the prepared ceramsite is formed by foaming, the compressive strength is low, and it does not have lipophilic properties

Method used

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  • Oleophylic ceramsite adopting oil-based drilling cutting residues obtained after thermal decomposition and preparation method of oleophylic ceramsite
  • Oleophylic ceramsite adopting oil-based drilling cutting residues obtained after thermal decomposition and preparation method of oleophylic ceramsite
  • Oleophylic ceramsite adopting oil-based drilling cutting residues obtained after thermal decomposition and preparation method of oleophylic ceramsite

Examples

Experimental program
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Effect test

Embodiment 1

[0035] An oil-friendly ceramsite using thermal desorption of oil-based drilling cuttings residues, which is mainly composed of oil-based drilling cuttings thermal desorption residues, bauxite, potassium feldspar, and bentonite, and the raw materials are calculated in parts by mass: oil content 0.3 % oil-based drilling cuttings thermal analysis residue 60 parts, low-grade bauxite 20 parts, potassium feldspar 15 parts, bentonite 5 parts.

[0036] The above-mentioned preparation method of oil-friendly ceramsite utilizing thermal analysis of oil-based drilling cuttings residues comprises the following steps:

[0037](1) Mix and ball mill base drilling cuttings thermal analysis residue, low-grade bauxite, potassium feldspar, and bentonite at a weight ratio of 60:20:15:5, and pass the milled material through a 200-mesh screen;

[0038] (2) The material after ball milling and sieving is put into a ball forming machine and rolled into shape, and according to the size of the material p...

Embodiment 2

[0043] An oleophilic ceramsite using thermal analysis of oil-based drilling cuttings residues, which is mainly composed of oil-based drilling cuttings thermal analysis residues, bauxite, potassium feldspar, bentonite, and glass powder, and the raw materials are calculated as follows in parts by mass: 45 parts of thermal analysis residue of oil-based drilling cuttings with an oil content of 0.2%, 35 parts of low-grade bauxite, 10 parts of potassium feldspar, and 10 parts of bentonite; glass powder is added in the form of additives, and the amount of glass powder added accounts for 15% of the total weight.

[0044] The above-mentioned preparation method of oil-friendly ceramsite utilizing thermal analysis of oil-based drilling cuttings residues comprises the following steps:

[0045] (1) Base drill cuttings thermal analysis residue, low-grade bauxite, potassium feldspar, and bentonite are mixed in a weight ratio of 45:35:10:10, and 15% of the total mass of the mixture is added t...

Embodiment 3

[0051] An oleophilic ceramsite using thermal analysis of oil-based drilling cuttings residues, which is mainly composed of oil-based drilling cuttings thermal analysis residues, bauxite, potassium feldspar, bentonite, and glass powder, and the raw materials are calculated as follows in parts by mass: 30 parts of thermal analysis residue of oil-based drilling cuttings with an oil content of 0.05%, 40 parts of low-grade bauxite, 20 parts of potassium feldspar, and 10 parts of bentonite; glass powder is added in the form of additives, and the amount of glass powder added accounts for other raw materials 20% of the total weight.

[0052] The above-mentioned preparation method of oil-friendly ceramsite utilizing thermal analysis of oil-based drilling cuttings residues comprises the following steps:

[0053] (1) Oil-based drilling cuttings thermal analysis residue, low-grade bauxite, potassium feldspar, and bentonite are mixed in a weight ratio of 30:40:20:10, and 20% of the total m...

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Abstract

The invention discloses ceramsite with an oleophylic property. The different proportions of oil-based drilling cutting residues obtained after thermal decomposition, potassium feldspar, bauxite and bentonite are utilized, the performance of the ceramsite can be improved by adding a small amount of waste glass powder, and the prepared ceramsite has the oleophylic property through loading of an aluminic acid ester coupling agent. The ceramsite with the oleophylic property is large in compressive strength and good in acid and alkali corrosion resistance, and has the oleophylic property, powder is not likely to fall off, backflushing regeneration of the ceramsite is easy, hardening is avoided, and a good effect can be achieved when the ceramsite serves as a filtering medium. The ceramsite can be used for treating oily sewage and production sewage or printing and dyeing wastewater; when the ceramsite is used for treating the oily sewage, the oil removal rate is 85% or above, and the suspended solid removal rate is 80% or above.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of waste produced in shale gas exploration and development for environmental protection, and in particular relates to an oil-friendly ceramsite and a preparation method thereof by thermally decomposing oil-based drilling cuttings residues. Background technique [0002] Oil-based drilling cuttings are a kind of solid waste produced in the process of shale gas exploration and development. It is bulky and complex in composition. In addition to a large amount of residual oil, it also contains toxic substances such as benzene series, phenols, anthracene, and pyrene. , a large number of pathogenic bacteria, parasites, copper, chromium, lead and other heavy metals, salts and polychlorinated biphenyls and other refractory toxic and harmful substances. If oil-based drilling cuttings are discharged without effective treatment, it will not only occupy a large amount of land, but also cause envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B38/00C04B33/13C04B33/132
CPCC04B33/13C04B33/132C04B38/009C04B38/0645C04B2235/3217C04B2235/3472C04B2235/96Y02P40/60
Inventor 张建李清方何社云祝威桂召龙王海峰王利君骆建华吴事江李学忠
Owner SINOPEC ENERGY & ENVIRONMENTAL ENG CO LTD
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