A composite treatment method for radioactive waste oil

A composite treatment and radioactive technology, applied in radioactive purification, nuclear engineering and other directions, can solve the problems of high difficulty and high cost of environmental pollution control, local environmental pollution, difficulty and high cost of radioactive organic waste oil, and achieve easy collection and reduce seepage. The effect of oil rate, excellent strength properties

Active Publication Date: 2019-06-14
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the difficulty and cost of radioactive organic waste oil transportation are relatively high. Once leakage occurs during transportation, it is difficult to recycle it, causing local environmental pollution, and the difficulty and cost of subsequent environmental pollution control are higher.

Method used

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  • A composite treatment method for radioactive waste oil
  • A composite treatment method for radioactive waste oil
  • A composite treatment method for radioactive waste oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The inventors found that the thickener can disperse in the waste oil and form a structural framework, and make the waste oil be absorbed and fixed in the structural framework, thereby forming a plastic semi-solid lubricating grease. Thus, the present inventors examined the thickening effect on waste pump oil of the following substances, which may have a thickening effect: paraffin wax, stearic acid, sepiolite, sericite, and organobentonite.

[0055] Test 1#: Turbine oil 85g, add organic bentonite (consumption is 25wt%, promptly account for 25wt% of the quality of the oil product to be treated, for example, 100g of waste oil to be treated, add 25g of organic bentonite, the same below), stir at room temperature Evenly, then add a small amount of ethanol (5ml), continue stirring to obtain a sample, and take a sample for oil leakage test;

[0056] Test 2#: Turbine oil 85g, add organic bentonite (consumption is 30wt%), stir evenly at room temperature, then add a small amount...

Embodiment 2

[0064] Several groups of samples using organic bentonite as the thickener were tested for oil seepage rate, and the test 1#, 4# and 6# samples in Example 1 were selected and placed on 10 layers of filter paper respectively, and observed and recorded after 12 hours. The size of the mimeograph and the number of layers of oil seepage, the test results are as follows image 3 Shown: With the gradual increase of the amount of organic bentonite, the number of sheets and wetted area of ​​filter paper wetted by the treated oil gradually decreased.

[0065] The results of the turbine oil thickening test of comprehensive embodiment 1 and 2 can be known: sepiolite and sericite have no obvious thickening effect to turbine oil; Notable thickening effect. According to the test phenomenon, the advantages and disadvantages of the three thickeners are listed in Table 4.

[0066] Table 4 Comparison of advantages and disadvantages of three thickeners

[0067] Advantages of thickener ...

Embodiment 3

[0070] Organic bentonite is used to thicken turbine oil. Although the oil seepage rate after thickening is low, it still cannot meet the requirement of less than 1% oil seepage rate. In view of this, the inventor continues to add an appropriate amount of curing agent on the basis of the thickened oil. Ideally, the selected curing agent should have a stronger oil retention and oil fixation effect, so as to reduce the oil leakage rate of the thickened oil to a greater extent.

[0071]In this example, polyurea was selected as the curing agent, and 100 g of X46 turbine oil was used to compare and analyze the curing effects of three polyureas Q4, Q2 and S2 on turbine oil through the following three sets of experiments. Test 1#: 10g Q4; Test 2#: 10g Q2; Test 3#: 10g S2. After adding polyurea, stir evenly at room temperature, and take samples for observation. Depend on Figure 4 It can be seen that the curing effects of Q4 and Q2 on turbine oil are similar. The cured turbine oil c...

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Abstract

The invention relates to a composite treatment method of radioactive waste oil. The method sequentially includes the steps that 1, at the room temperature, a thickening agent is added into the waste oil during stirring, and even stirring continues to obtain a first material; 2, an addition agent is added into the first material during stirring, and even stirring continues to obtain a second material; 3, a curing agent is added into the second material during stirring, and even stirring continues to obtain a cured product. The method can be completed at the room temperature and has good compatibility with different waste oils or waste liquids, the obtained cured body is low in oil penetration rate, has certain strength and is easy to recycle after scattering and good for transportation, andthe cured body is combustible, so that subsequent incineration treatment is convenient.

Description

technical field [0001] The invention relates to a composite treatment method of radioactive waste oil, in particular to a composite treatment method of thickening and solidification, and belongs to the technical field of radioactive nuclear waste treatment. Background technique [0002] With the development of my country's nuclear power industry, the amount of temporary storage of nuclear power radioactive waste oil is increasing. Due to the characteristics of fluidity, flammability, permeability and dispersibility of radioactive organic waste oil, it is not suitable for long-term storage, and it should be cleaned as soon as possible. Conditioning or processing. [0003] Throughout the waste oil treatment and preparation methods at home and abroad, they can be roughly divided into two categories, namely non-destructive technology and destructive technology: 1) non-destructive technology refers to changing the physical properties of radioactive waste oil to improve its further...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21F9/20G21F9/10
CPCG21F9/10G21F9/20
Inventor 肖宁朱盈喜陈沛邓晨辉张鸿钟云韩敬王宇
Owner BEIJING UNIV OF CHEM TECH
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