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Fired brick and preparation method thereof

A technology of sintered bricks and adobe, which is applied in the field of sintered bricks and its preparation, which can solve the problems of ecological environment risks and occupation of large land resources, and achieve the effects of good environment, cost saving and avoiding secondary pollution

Inactive Publication Date: 2021-02-09
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, drilling solid waste is mainly stored, which not only occupies a large amount of land resources, but also causes potential ecological environmental risks. The comprehensive utilization of drilling waste will become the main driving force for the sustainable development of the natural gas industry

Method used

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  • Fired brick and preparation method thereof
  • Fired brick and preparation method thereof
  • Fired brick and preparation method thereof

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preparation example Construction

[0027] The invention provides a method for preparing sintered bricks, comprising the following steps;

[0028] Sieve the water-based drilling cuttings to obtain cuttings samples with a particle size not greater than 5mm;

[0029] Using water to adjust the moisture content of the cuttings sample to 20%±2%, to obtain the cuttings sample slurry;

[0030] Mixing the cuttings sample slurry, high-efficiency stabilizer and improved blending agent to obtain drilling solid waste;

[0031] mixing the drilling solid waste, internal combustion coal and fly ash to obtain a mixture;

[0032] Stirring and shaping the mixture with water in turn to make adobe;

[0033] The adobe is dried, sintered and cooled in sequence to obtain the sintered brick.

[0034] In the present invention, the water content of the solid drilling waste is preferably less than 40%. In the present invention, the drilling solid waste is preferably leached according to the GB5086.1-1997 method, and the COD concentrat...

Embodiment 1

[0053] figure 1 The flow chart of preparing sintered bricks for the embodiment of the present invention.

[0054] Taking water-based drilling cuttings in the Sulige Gas Field in Ordos as an example, the following processing methods are adopted:

[0055] Sieve the water-based drilling cuttings (indicators shown in Table 2) to obtain cuttings samples with a particle size not greater than 5 mm. Use water to adjust the moisture content of the cuttings samples to 20%, and add a high-efficiency stabilizer (PAC, The amount used is 1.2% of the mass of the cuttings sample) and the improved blending agent (FeSO 4 , the dosage is 0.4% of the mass of the cuttings sample) and mixed evenly, then mixed with internal combustion coal and fly ash, according to the ratio of drilling solid waste: internal combustion coal: fly ash: 50-60:10:40-50 The mixture obtained by mixing is transferred to the brick-making mixing system, and a certain amount of tap water is added, stirred, shaped, and made ...

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Abstract

The invention provides a fired brick and a preparation method thereof, and belongs to the technical field of resource reutilization. According to the method, two solid wastes, namely water-based drilling cuttings and fly ash, are comprehensively utilized at the same time, the utilization rate of the treatment process is high, secondary pollution is avoided, and the product additional value is high; in addition to the addition of 10% of internal combustion coal in the fired brick production process, no other expensive additive is needed, the production cost is low, the technology is mature, andthe practicability is high; and related properties such as compressive strength, water absorption and the like of the produced fired brick meet the standard of GB / T 5101-2017 Fired common bricks. Compared with traditional drilling solid waste stacking treatment and roadbed filling methods, the method of the invention has the advantages that: the treatment efficiency is high, resources can be utilized to the maximum extent, the potential influence on the environment is relatively small, the environmental protection benefit is remarkable, and the economic value is high.

Description

technical field [0001] The invention relates to the technical field of resource reuse, in particular to a fired brick and a preparation method thereof. Background technique [0002] Natural gas is a high-quality clean energy. my country is rich in natural gas reserves. In order to continuously optimize the structure of natural gas utilization, the state vigorously promotes the development of the natural gas industry. The consumption of natural gas is still in the stage of rapid growth. It is estimated that the demand for natural gas in my country will increase by more than 15% every year in the next 20 years. A large amount of drilling waste will be produced during the drilling of natural gas wells. Tens of thousands of wells are added every year in my country. According to statistical calculations, the average amount of drilling cuttings and waste drilling fluid produced by a typical single well (well depth 3,500 meters) is about 1,000 m 3 . With the increase of natural g...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B33/13C04B33/135C04B33/32
CPCC04B33/131C04B33/1315C04B33/1324C04B33/1328C04B33/1352C04B33/32C04B2235/444C04B2235/448C04B2235/96Y02P40/60
Inventor 李子秀周长波韩桂梅方刚党春阁林雨琛
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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