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Soft floating roof method for reducing evaporation of liquid fuel storage tank through hollow plastic product

A technology for plastic products and liquid fuels, applied in containers, packaging, transportation and packaging, etc., can solve the problems of limited minimum descending height, limited lifting speed, and high cost of floating roofs, reducing the risk of explosion and evaporation loss, The effect of suppressing volatilization and reducing evaporation loss

Inactive Publication Date: 2017-04-26
北京众信远新能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a soft floating roof method that reduces the evaporation of liquid fuel storage tanks through hollow plastic products, aiming to solve the problem of high cost of traditional floating roofs, high maintenance costs, limited lifting speed, and easy occurrence of chucking and floating plate drop. The problem of sinking accidents and the limitation of the minimum descent height

Method used

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  • Soft floating roof method for reducing evaporation of liquid fuel storage tank through hollow plastic product
  • Soft floating roof method for reducing evaporation of liquid fuel storage tank through hollow plastic product

Examples

Experimental program
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Effect test

preparation example Construction

[0018] The preparation method includes the following steps: first stirring, mixing, extruding, and granulating the masterbatch and the flame retardant, making a hemisphere through an injection molding process, and then combining the two hemispheres into a hollow covering sphere by welding; or The masterbatch and the flame retardant are stirred and mixed, then melted, and the hollow covering ball is directly obtained through the hollow blow molding process.

[0019] The hollow plastic product is not only resistant to non-polar petroleum-based fuels, but also resistant to polar dangerous chemicals such as methanol gasoline, ethanol gasoline, acetone, ethyl acetate and the like.

[0020] The plastic matrix material involved in the present invention includes nylon 6, nylon 66, polyetheretherketone PEEK and polyimide PI, and their modified products. Its specific performance requirements are as follows.

[0021]

[0022] Such as figure 1 As shown, the soft floating roof method ...

Embodiment 1

[0027] Use a cylindrical container with a diameter of 26cm to simulate an oil tank, put a certain volume of No. 93 motor gasoline into the container, and lay a Φ38mm×1.8mm nylon 66 covering ball with a certain thickness above the liquid surface. Fill another container with the same quality of oil, without putting in the hollow covering ball, as a blank experiment. Put the two in the same environment to let them volatilize naturally, and use a high-precision balance to obtain the volatilization of the oil after different times by weighing. Experimental data show that, compared with the oil without covering treatment, the volatilization loss of oil in the experimental group with covering balls can be reduced by 60%.

Embodiment 2

[0029] Use a cylindrical container with a diameter of 26cm to simulate an oil tank, put a certain volume of ethanol gasoline into the container, and lay a polyimide covering ball with a certain thickness of Φ40mm×1.0mm above the liquid surface. Fill another container with the same quality of oil, without putting in the hollow covering ball, as a blank experiment. Put the two in the same environment to let them volatilize naturally, and use a high-precision balance to obtain the volatilization of the oil after different times by weighing. Experimental data shows that, compared with the oil without covering treatment, the volatilization loss of oil in the experimental group with covering balls can be reduced by 65%.

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Abstract

The invention discloses a soft floating roof method for reducing evaporation of a liquid fuel storage tank through a hollow plastic product. The hollow plastic product is prepared from nylon 6, nylon 66 and PEEK (polyether-ether-ketone) or PI (polyimide) as substrate materials (master batch) as well as a flame retardant and a static electricity conductive agent with an injection welding process or a hollow blow molding process. The hollow plastic product adopts hollow spheres with the diameter ranging from phi 10 mm to phi 200 mm and the wall thickness ranging from 0.5 mm to 5 mm, and the surfaces are not coated. The soft floating roof method is applicable to storage tanks in various shapes, can realize mechanical filling and solves the problems of high fabrication cost, high maintenance cost, limited lifting and dropping speeds, high probability of subsiding accidents of a chuck and a floating tray, limited lowest dropping height and the like of traditional floating roofs; and the hollow plastic product floating on the liquid level in the storage tank is flame-retardant, high-temperature resistant, high in chemical inertness and long in service life, can be mechanically recovered, has no adverse effect on the structure of the storage tank and does not affect normal maintenance of the storage tank.

Description

technical field [0001] The invention belongs to the technical field of internal floating roofs of fuel storage tanks, in particular to a soft floating roof method for reducing evaporation of liquid fuel storage tanks through hollow plastic products. Background technique [0002] At present, the internal floating roof technology of liquid fuel storage tanks has always been the focus of attention. The use of internal floating roof technology can effectively prevent the intrusion of sand and dust and ensure the quality of the liquid storage. At the same time, the internal floating plate floats on the liquid surface. Make the liquid have no vapor space, reduce evaporation loss by 85% to 96%, and reduce air pollution; second, it can significantly reduce the risk of fire and explosion. Because the oil and gas concentration above the floating roof is significantly reduced, it is difficult to reach the explosion limit, and the explosion occurs. The odds are significantly lower. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D88/34
CPCB65D88/34
Inventor 祝艳杰
Owner 北京众信远新能源技术有限公司
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