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Method for preparing ceramsite by using coal chemical processing wastes and refinery oily sludge

A technology for coal chemical industry and refinery, which is applied in the field of chemical mixed waste to prepare ceramsite, can solve the problems of high treatment cost and large amount of waste treatment, and achieves the effect of simple operation and avoiding high energy consumption.

Inactive Publication Date: 2018-08-28
SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, due to the sharp drop in international crude oil prices and the rapid rise in demand for petroleum products, the scale of my country's coal chemical industry has grown rapidly, and the hazardous waste generated by the coal chemical industry has also increased significantly. The sand content also increases at the same time, facing the problem of large amount of waste treatment and high treatment cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] According to mass percentage, 45% fly ash, 3% refinery oily sludge, 2% coal chemical cinder, 50% special proppant, the special proppant is a mixture of bauxite, kaolin and bentonite, and the ratio is 1:0.8 : 1.5, obtain raw material after mixing; Described fly ash, coal cinder are to remove sundries and larger particles. The refinery oily sludge is oily sludge after being centrifuged in a refinery sewage treatment plant.

[0016] The raw materials are fed into the ball mill to produce 300-mesh fine powder, and then put into the disc granulator to make balls with a diameter of 0.5-0.85cm. Minutes; the ceramsite is prepared after the pellets are lowered to ≤50°C in the furnace and taken out.

[0017] After the quality inspection, the ceramsite manufactured above meets the national standard: the diameter of ceramsite is 0.5-1cm, and the bulk density is 800kg / m 3 , The barrel pressure strength is 4.02Mpa.

Embodiment 2

[0019] According to mass percentage, 40% fly ash, 4% refinery oily sludge, 3% coal chemical cinder, 53% special proppant, the special proppant is a mixture of bauxite, kaolin and bentonite, and the ratio is 1:0.8 : 1.5, obtain raw material after mixing; Described fly ash, coal cinder are to remove sundries and larger particles. The refinery oily sludge is oily sludge after being centrifuged in a refinery sewage treatment plant.

[0020] The raw materials are sent to the ball mill to produce 300 mesh fine powder, and then put into the disc granulator to make balls with a diameter of 0.5-0.85cm. Minutes; the ceramsite is prepared after the pellets are lowered to ≤50°C in the furnace and taken out.

[0021] After the quality inspection, the ceramsite manufactured above meets the national standard: the diameter of ceramsite is 0.5-1cm, and the bulk density is 800kg / m 3 , The barrel pressure is 4.01Mpa.

Embodiment 3

[0023] According to mass percentage, 37% fly ash, 6% refinery oily sludge, 5% coal chemical cinder, 52% special proppant, the special proppant is a mixture of bauxite, kaolin and bentonite, and the ratio is 1:0.8 : 1.5, obtain raw material after mixing; Described fly ash, coal cinder are to remove sundries and larger particles. The refinery oily sludge is oily sludge after being centrifuged in a refinery sewage treatment plant.

[0024] The raw materials are fed into the ball mill to produce 300-mesh fine powder, and then put into the disc granulator with water to make balls with a diameter of 0.5-0.85cm. Minutes; the ceramsite is prepared after the pellets are lowered to ≤50°C in the furnace and taken out.

[0025] After the quality inspection, the ceramsite manufactured above meets the national standard: the diameter of ceramsite is 0.5-1cm, and the bulk density is 800kg / m 3 , The barrel pressure is 4.11Mpa.

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Abstract

The invention discloses a method for preparing ceramsite by using coal chemical processing wastes and refinery oily sludge. Fly ash from chemical processing of coals, refinery oil sludge, coal chemical processing cinder and a special proppant are evenly mixed, the mixture is added with water, and pelletized in a disk grain making machine, and then the pellets are sent to a calcining furnace for high-temperature sintering, then cooled for discharging, and placed at room temperature to prepare ceramsite. According to the method provided by the invention, reduced oil sludge, homogenization-drying-sorting integrated treatment and a rotary kiln high-temperature melting solid waste treatment coupling technology are adopted to carry out harmless treatment and resource utilization on oily sludge.The method provided by the invention can effectively reduce the landfill treatment capacity of coal chemical processing residues and converts the residues into a light wall material available for construction. On the other hand, based on the proppant developed by a large number of researches on basic components of oily sludge, the defect of insufficient ceramsite cylinder compressive strength after burning of the oil sludge and coal chemical processing residues is successfully solved. The resource utilization and harmless treatment of the oil sludge is truly realized and sustainable economic development is achieved.

Description

technical field [0001] The invention relates to the technical field of preparing ceramsite by utilizing chemical mixed waste, in particular to a production method for preparing ceramsite by utilizing coal chemical waste and oily sludge from a refinery. Background technique [0002] In recent years, due to the sharp drop in international crude oil prices and the rapid rise in demand for petroleum products, the scale of my country's coal chemical industry has grown rapidly, and the hazardous waste generated by the coal chemical industry has also increased significantly. The sand content also increases at the same time, facing the problem of large amount of waste treatment and high treatment cost. Therefore, it is necessary to make better comprehensive utilization of refinery oily sludge and coal chemical waste. Contents of the invention [0003] The purpose of the present invention is to solve the problem of comprehensive utilization of coal chemical waste and refinery oily ...

Claims

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Application Information

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IPC IPC(8): C04B33/135C04B33/132C04B33/13C04B38/06
CPCC04B33/131C04B33/1321C04B33/135C04B33/1352C04B38/009C04B38/068C04B2235/3217C04B2235/77C04B2235/96Y02P40/60
Inventor 许磊李霁阳屈文婷杨东元王青
Owner SHAANXI YANCHANG PETROLEUM GRP
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