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Process for oil-containing sludge and sand

A treatment process, mud and sand technology, applied in the direction of sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problem that the residue cannot meet the environmental protection discharge requirements, difficult to industrialize treatment, fixed investment To achieve the effect of large-scale continuous industrial production, low energy consumption and operating costs, and low fixed investment

Inactive Publication Date: 2009-02-04
大庆油田创业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the deficiencies of the existing cracking method for treating oily sludge sand, the residue after treatment cannot meet the environmental protection discharge requirements, the processing capacity is small, the safety is poor, and it is difficult to realize industrialized treatment. The present invention provides an oily sludge sand treatment process. The process and special equipment can process all kinds of oily sludge and sand, realize the resource utilization of oily sludge sand, high recovery rate of cracked oil, safe and reliable, low processing cost, less fixed investment, no secondary pollution, meet environmental protection requirements, easy to popularize and apply , capable of large-scale continuous industrial production

Method used

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  • Process for oil-containing sludge and sand
  • Process for oil-containing sludge and sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A cracking device used in an oily sludge sand treatment process, as shown in Figure 2, includes a shell 8 with a feed inlet 9 and a cracked gas outlet 10 on the shell 8, and the shell 8 is made of high-temperature heat-resistant steel , has good heat resistance and thermal conductivity. A chopping device 17 and a grille 18 are fixed on the feeding port 9 of the housing 8, which can chop large pieces of oily sludge and sand solids with high strength or strong viscosity, so as to avoid their blockage and damage to the internal screw conveyor 11. The housing 8 is placed in the heat-insulating shell 12, and there is an isolation support 14 between the shell 8 and the heat-insulation shell 12. There is a channel 15 on the isolation support 14, and a screw conveyor 11 is built in the shell 8, and the screw conveyor (11) consists of Shaft 19 and helical blade 20 are composed. The helical blade 20 forcibly scrapes off the oily sludge sand and residue adhering to the inner wall ...

Embodiment 2

[0046] As shown in Figure 2, on the basis of Embodiment 1, the outlet end of the housing 8 is placed in the large sealing box 30 fixed outside the slag chamber 16, and there is a high temperature resistant seal between the housing 8 and the large sealing box 30. Packing 23, the outlet end of housing 8 can slide in the large sealing box 30, and there is soft sealing packing 32 between cracking gas outlet 10 and heat preservation shell 12, avoids housing 8 to damage heat preservation shell 12 because of thermal expansion and contraction.

Embodiment 3

[0048] As shown in Figure 2, on the basis of embodiment 1 or 2, a level meter 26, a cracked gas outlet 10, a discharge port 34 and an explosion-proof port 27 are installed on the slag chamber shell 25 of the slag chamber 16. There is a residue screw conveyor 28 communicating with the discharge port 34 at the bottom of the chamber shell 25, and the residue screw conveyor 28 is connected with the power unit 31. A water spray pipe 29 connected to an external pressure water source is fixed in the slag discharge chamber 16, and an appropriate amount of water is sprayed on the high-temperature residue to generate water vapor and water gas, so that the water vapor can contact the high-temperature oily sludge sand being cracked, and the oily sludge Under the action of the natural catalyst of sand itself, the recovery rate of pyrolysis oil is improved, the residual carbon content is reduced, the production of non-condensable gas is increased, and the problem of dust pollution is also so...

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Abstract

The invention relates to an innocent treatment process of oil-contaminated argillo-arenaceous and an arrangement. It mainly settles the problems of no-reaching environment protection discharging requirement of residue, small handling capacity, weak security and no- realizing industrial treatment for present cracking method of handling oil-contaminated argillo-arenaceous. It characterized in that: the process has the following steps: a, preconditioning, b, heating, c, mixture gas treatment, d, innocent residue treatment; a cracking arrangement is needed to carry out said process, which comprising: a shell (8) mounted in a thermal insulation shell (12), a guard support (14) mounted between the shell and the thermal insulation shell, a conduit (15) in the guard support (14), a screw conveyor (11) mounted in the shell (8), a heat source orifice(13) and a venthole(7) in the thermal insulation shell (12), flexible sealing used in contact site of the shell (8) and the thermal insulation shell (12). The process and the arrangement have the characters of big handling capacity, high security, realizing industrialization treatment.

Description

Technical field: [0001] The invention relates to a treatment process of oily sludge sand in oil field crude oil production and oil refining production process, in particular to a treatment process of oily sludge sand. Background technique: [0002] At present, in the process of oil field crude oil production and oil refining production, a large amount of oily sludge sand is inevitably produced. These oily sludge sands are complex in shape, including solid, semi-solid, fluidized slurry, etc., and have complex components, including crude oil, water, chemical additives, etc. It takes hundreds of years to completely decompose under natural conditions. If no effective treatment measures are taken and natural stacking or burial occurs, it will not only directly occupy a large amount of land and space, but also seriously pollute the air, soil and groundwater. In addition to natural stacking and burial, the existing methods for treating oily sludge sand include incineration, solidi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/12C02F11/10F23G7/06
Inventor 李国祥郭富泰刘新飚于振兴姜亦坚张雪冬李学义杜海涛
Owner 大庆油田创业集团有限公司