Drill cutting brick-firing gas tunnel kiln

Abstract

The invention discloses a drill cutting brick-firing gas tunnel kiln comprising a kiln body. A kiln inlet and a kiln outlet are arranged in the kiln body; a preheating section, a combustion section and a cooling section are sequentially arranged on the kiln body from the kiln inlet to the kiln outlet; ventilation and exhaust ducts are evenly distributed in the preheating section, and an upper row and a lower row of grate furnace fire-jet heads in uniform distribution are arranged on the two sides of the combustion section, and each grate furnace fire-jet head is connected with a gas supply station through a gas supply pipeline; a combustion fan is arranged over the combustion section and connected with the grate furnace fire-jet heads. The drill cutting brick-firing gas tunnel kiln has the advantages that by making use of the characteristics of fast temperature rising by natural gas combustion and small floor area of the device, the temperature is raised to the needed temperature for brick firing within a short time; meanwhile, the kiln is downsized, making while firing of the drill cutting bricks is realized, and environmental value and economic value are high.

Description

technical field [0001] The invention relates to the technical field of drilling cuttings processing, in particular to a drilling cuttings burning brick gas tunnel kiln. Background technique [0002] During the drilling process of oil and gas, a large amount of industrial waste will be generated, including waste water, rock cuttings and drilling mud. Taking a 3,000-meter-deep well as an example, about 250m³ of cuttings and about 500m³ of mud will be produced. [0003] Drilling cuttings contain complex components such as oil, clay, various chemical treatment agents, weighting materials, dirty oil, sewage, and drill cuttings. They have the characteristics of high oil content and many organic pollutants, and there is a significant risk of environmental pollution. Oil-based drilling cuttings have been listed as national hazardous waste because they contain pollutants such as petroleum hydrocarbons, heavy metals, and organic matter. If they are discharged directly without treatme...

AI Technical Summary

Problems solved by technology

[0004] One way to deal with drilling cuttings is to use cement to solidify the landfill. The disadvantages of this treatment method are: the actual effect of solidification is difficult to control, a large amount of dirt will eventually pollute the soil and groundwater in some form, and the solidified landfill also takes up lots of land

[0006] 1. Because the drilling cuttings are very viscous, the shale crushing equipment in the shale brick factory cannot crush the drilling cuttings;

[0007] 2. The production of shale brick factories is mass production, and the amount of drilling cuttings is relatively small, while the conventional brick kilns in shale brick factories are re-ignited and heated to the temperature required for burning bricks after each cooling, and it takes several days. time, therefore, it is not economical to use conventional brick kilns to fire shale bricks;

[0008] 3. Drilling cuttings need to be stored at the drilling site and brick factory, and need to be transported from the drilling site to the brick factory. The storage of drilling cuttings requires a lot of space, and the transportation of drilling cuttings also requires a lot of transportation costs.

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