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Production technology of reclaimed rubber prepared from sewage sludge

A production process and technology for sludge sludge, applied in sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of polluting water, soil and air, deteriorating ecological environment, occupying large land, etc. Achieve the effect of improving production efficiency, saving energy and avoiding damage

Active Publication Date: 2016-11-09
东营金岛环境工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Oily sludge sand is mainly produced by oil fields in oil exploration and development. Oily sludge sand itself has complex components, containing a large amount of aged crude oil, wax, colloid, suspended solids, salts, acid gases, etc. It takes hundreds of years to completely decompose under natural conditions; the direct discharge of oily sludge will occupy a large amount of land, and the toxic substances contained in it will pollute water, soil and air, and deteriorate the ecological environment; at present, oily sludge sand in oil fields has been listed Included in the "National Hazardous Waste Catalog" as oily waste (HW08 item); according to the current crude oil production (16×108t / a) in my country, nearly one million tons of oily sand is produced every year, causing serious pollution and urgently needed to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] According to the weight ratio of 1:4, add the sludge to the 8wt% sodium p-styrene sulfonate aqueous solution, adjust the pH to 12; stir at 250r / min at 70°C for 2 hours, fully precipitate, and take the upper layer and the second supernatant, combined as a mixed solution for later use. Take waste tires, rubber hoses, and rubber shoes for classification and cleaning; crush to form rubber powder with a particle size of 100 mesh. In the activation tank, according to the weight ratio of 1:5, add the rubber powder to the aforementioned mixed solution; then add 0.05% benzoyl peroxide based on the total weight of the raw materials, and stir under nitrogen atmosphere to fully mix the raw materials. The temperature was raised to 60° C., and the reaction was carried out for 5 hours. Heat the raw materials in the activation tank to 220° C., control the pressure at 2.4 MPa, and keep it warm for 5 hours to obtain desulfurized reclaimed rubber. Relieve the pressure, cool down, and di...

Embodiment 2

[0025]According to the weight ratio of 1:2, add the sludge to the 5wt% sodium p-styrene sulfonate aqueous solution, adjust the pH to 14; stir at 250r / min at 90°C for 0.5 hours, fully precipitate, and take the upper layer and the second supernatant, combined as a mixed solution for later use. Take waste tires, rubber hoses, and rubber shoes for classification and cleaning; crush to form rubber powder with a particle size of 60 mesh. In the activation tank, according to the weight ratio of 1:2, add the rubber powder to the aforementioned mixture; then add 0.03% benzoyl peroxide based on the total weight of the raw materials, and stir under nitrogen atmosphere to fully mix the raw materials. The temperature was raised to 50° C., and the reaction was carried out for 3 hours. Heat the raw materials in the activation tank to 180° C., control the pressure at 3.2 MPa, and keep it warm for 8 hours to obtain desulfurized reclaimed rubber. Relieve the pressure, cool down, and discharge...

Embodiment 3

[0027] According to the weight ratio of 1:6, add the sludge to 10wt% sodium p-styrene sulfonate aqueous solution, adjust the pH to 10; stir at 250r / min at 50°C for 1 hour, fully precipitate, and take the upper layer and the second supernatant, combined as a mixed solution for later use. Take waste tires, rubber hoses, and rubber shoes for classification and cleaning; crush to form rubber powder with a particle size of 160 mesh. In the activation tank, according to the weight ratio of 1:18, add the rubber powder to the aforementioned mixed solution; then add 0.1% benzoyl peroxide based on the total weight of the raw materials, and stir under nitrogen atmosphere to fully mix the raw materials. The temperature was raised to 70° C., and the reaction was carried out for 12 hours. Heat the raw materials in the activation tank to 260° C., control the pressure at 1.8 MPa, and keep it warm for 7 hours to obtain desulfurized reclaimed rubber. Relieve the pressure, cool down, and disch...

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Abstract

The invention discloses a production process for preparing regenerated rubber from oil sludge. The production process comprises the following steps of: (1) treating the oil sludge by taking a sodium p-styrenesulfonate water solution as a cleaning agent and adopting a thermochemical cleaning method, sufficiently depositing, and taking upper crude oil and secondary supernatant as mixed liquor for later use; (2) crushing waste rubber to form rubber powder; (3) reacting the rubber powder and the mixed liquor obtained from the step (1) in the presence of an initiating agent in an activating tank; (4) desulfurizing at high temperature and high pressure; (5) refining desulfurized regenerated rubber to prepare a rubber product. The production process disclosed by the invention can be used for more effectively solving the problem that the oil sludge pollutes soil and environment, changing the wastes into renewable resources and saving the precious energy and a large quantity of funds. The prepared rubber product can reach or be superior to the relative national standard on various mechanical properties, is outstandingly increased in addition value of the oil sludge, can generate huge social and economic benefits, and is suitable for general popularization and use.

Description

technical field [0001] The invention relates to a utilization method of sludge, in particular to a production process for preparing reclaimed rubber from sludge. Background technique [0002] Oily sludge sand is mainly produced by oil fields in oil exploration and development. Oily sludge sand itself has complex components, containing a large amount of aged crude oil, wax, colloid, suspended solids, salts, acid gases, etc. It takes hundreds of years to completely decompose under natural conditions; the direct discharge of oily sludge will occupy a large amount of land, and the toxic substances contained in it will pollute water, soil and air, and deteriorate the ecological environment; at present, oily sludge sand in oil fields has been listed Included in the "National Hazardous Waste Catalog" in the oily waste category (HW08 items); according to my country's current crude oil production (16 × 108t / a), nearly one million tons of oily sands are produced every year, causing seri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L17/00C02F11/00
Inventor 梁玉海于国明张俊锋刘德华崔志峰战宁梁燕
Owner 东营金岛环境工程有限公司
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