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Low-temperature crushing and separating treatment method for oil field waste plastic

A technology of separation treatment and low-temperature crushing, which is applied in the direction of plastic recycling, mechanical material recycling, recycling technology, etc., can solve the problems of exceeding national standards, polluting surface water and groundwater, etc., and achieve low operating costs, effective environmental protection, and resource utilization. The effect of recycling

Inactive Publication Date: 2016-01-27
王仁杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the oily sludge waste plastic cloth is not properly treated, the petroleum components in it will volatilize, causing the total concentration of hydrocarbons in the air in the oilfield-related areas to exceed the national standard, and the oily sludge scattered and randomly piled up will also pollute Surface water and groundwater, causing indicators such as oil and COD in the water to seriously exceed the national standard

Method used

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  • Low-temperature crushing and separating treatment method for oil field waste plastic
  • Low-temperature crushing and separating treatment method for oil field waste plastic
  • Low-temperature crushing and separating treatment method for oil field waste plastic

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specific Embodiment approach 1

[0022] Specific implementation mode one: as Figure 1~Figure 3 As shown, the low-temperature pulverization and separation treatment method of oilfield waste plastics, the low-temperature pulverization and separation treatment method of oilfield waste plastics includes the following steps:

[0023] Step 1: pretreatment; arrange the sludge and waste plastics in the hot water tank 1 for initial cleaning, and the temperature of the hot water in the hot water tank 1 is 50-55°C;

[0024] The purpose is to refine and separate the sand and gravel in the waste plastic cloth sludge, and the extracted sewage has a low oil content, which can be directly discharged into the sewage treatment device for biochemical treatment.

[0025] Step 2: low-temperature separation treatment; put the pretreated sludge waste plastic cloth into the low-temperature separation device 2, and simultaneously inject water into the low-temperature separation device 2 for oil-water separation, and the waste sludge...

specific Embodiment approach 2

[0035] Specific embodiment two: the low-temperature pulverization and separation treatment method of oil field waste plastics described in specific embodiment one. 25% (mass percentage) of alkanolamide, 0.2% (mass percentage) of sodium oleate, 3% (mass percentage) of sodium pyrophosphate, and the balance is composed of caustic soda, and all the above-mentioned raw materials are mixed in Together.

[0036]The feature of this cleaning aid is that it can quickly and effectively emulsify, disperse, and dissolve oil stains on waste plastic cloth, and it is non-toxic to washing materials and the environment, has no irritating odor, and does not pollute the environment.

specific Embodiment approach 3

[0037] Specific implementation mode three: the low-temperature pulverization and separation treatment method of oil field waste plastics described in specific implementation mode 1 or 2, the low-temperature separation treatment in step 2 is divided into two stages; in the first stage, the water temperature is 30~35°C, and the processing time is 20~ 25mim, the low-boiling light hydrocarbons on the waste sludge and waste plastic cloth volatilize from the oily sludge; in the second stage, when the water temperature is 36°C to 45°C, the heavy oil on the waste sludge and waste plastic cloth Initial partial separation; eventually four products of oil, water, waste plastic cloth and burnt sand (i.e. a small amount of debris) are separated.

[0038] This separation process consists of the following two stages:

[0039] Ⅰ Low-temperature separation stage: When the water temperature is 30-35°C, light hydrocarbons with low boiling points are volatilized from the oily sludge;

[0040] Re...

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Abstract

The invention belongs to the production field of waste plastic recycling, and relates to a low-temperature crushing and separating treatment method for oil field waste plastic. According to the treatment method, the treatment efficiency of dirty oil sludge waste plastic cloth can reach 99.5%, the content of oil in residues obtained after oil extracting is lower than 1%, and the requirement for environment protection can be met. The method includes the steps that the dirty oil sludge waste plastic cloth is arranged in a hot water tank to be primarily cleaned; then, the dirty oil sludge waste plastic cloth is thrown into a low-temperature separating device, and meanwhile water is injected into the low-temperature separating device for oil and water separation; separated oil enters an oil tank to be recycled, the separated water is conveyed to a filtering device through a pipe, the water enters a storage tank after being filtered by a filter device, and a small number of other sundries are discharged into a sand soil box; after the separated dirty oil sludge waste plastic cloth enters a crushing machine to be crushed, the dirty oil sludge waste plastic cloth is thrown in a cleaning and separating device; meanwhile, a cleaning assistant is thrown into the cleaning and separating device, water is injected, and the dirty oil sludge sand on the waste plastic cloth is thoroughly separated and removed; and drying and storing are carried out. The treated waste plastic cloth meets the recycling standard, and plastic regeneration particles can be directly produced.

Description

technical field [0001] The invention belongs to the field of recycling production of waste plastics, and relates to a treatment method for oily sludge waste plastics. Background technique [0002] The waste plastic cloth and the oil sludge sand contained in the oil production site are plastic woven cloth laid on the oil production site in accordance with the environmental protection requirements during the oil production process. It can effectively prevent oil and other substances from polluting the operation site during the oil production process. Since there is currently no advanced technology that can fully recycle it for recycling, it can only be treated by on-site burial, incineration, hot water washing or thermal desorption treatment. [0003] On-site burial treatment is adopted. Because there are some solid wastes rich in mineral oil on these waste plastic sheets, the appearance is black and viscous. If they are not treated and buried directly, it will not only occupy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/00B29B17/02B29B17/04
CPCY02W30/52Y02W30/62
Inventor 王仁杰吕丰民赵鹏
Owner 王仁杰
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