Efficient rinsing desorption technique of sand filteration tank

A sand filter tank, desorption technology, applied in the direction of filtration separation, gravity filter, loose filter material filter, etc., to achieve the effect of protecting the environment, improving the effect, and huge economic and social benefits

Active Publication Date: 2012-11-28
王自治
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that it has caused serious consequences to the development of oilfield water injection

Method used

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  • Efficient rinsing desorption technique of sand filteration tank
  • Efficient rinsing desorption technique of sand filteration tank
  • Efficient rinsing desorption technique of sand filteration tank

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Experimental program
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Embodiment Construction

[0013] figure 1 In , the pre-filter water inlet and the rinse water inlet are separated by a concentric sleeve. Concentric tubes extend vertically into the canister from the center of the tank top. There is an annular plate (4) connected and sealed between the surface layer pipe (5) and the inner layer pipe (6), and there is an annular centralizing plate (19) at the lower end of the annular space (7). The inner layer pipe (6) and the center pipe (8) ) with a gasket (10) at the lower end, the upper end of the inner tube (6) is higher than the annular plate (4) and a flange (3) is connected to the elevator (2), the surface tube (5) is connected to the filter tank (11) Connect, the part that the lower end of the concentric sleeve pipe stretches into the filter tank is the loose water tailpipe (9). The filtration process is: the pre-filtered water enters the filter tank (11) from the water inlet (17) through the annular space (7) and the diffuser tailpipe (9), and passes through...

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Abstract

The invention relates to a water treatment and filtering sand leaching tank in the environmental protection field, which is characterized in that in a sand leaching tank, leaching and a flushing inlet and an outlet are mutually separated. A new flushing process is high inlet and high outlet, and the traditional 'back flushing' way which is characterized by low inlet and high outlet is replaced bya mobile-type flushing desorption system. A flushing desorption device can carry out vertical reciprocating motions. In a descending process, the function of the flushing desorption device gradually helps to suspend and boil heavy sand leaching materials and a so-called boiling bed can be formed. As the fixed pore structure of a sand filter bed is changed into a non-fixed pore structure, desorption problems are completely solved; and a compound supporting layer becomes requirements for forming the boiling bed and improving filter fineness. The mobile-type flushing desorption system can completely satisfy the requirements of advanced wastewater treatment in oil fields, which especially provides a multifunctional and high efficient flushing desorption technique for the common difficult problem of polymer contained sewage advanced treatment of polymer oil fields at home and abroad, so that the tank can replace the unadapted traditional waste water sand filtering technique.

Description

Technical field [0001] The invention relates to a sand filter tank for water treatment and filtration in the field of environmental protection, in particular to a sand filter tank for treatment and filtration of oily and polymer-containing sewage in oil fields. Background technique [0002] During the production process of the oil field, there is always a large amount of sewage. Entering the secondary oil recovery stage of water injection mining, the amount of sewage increases, and entering the tertiary oil recovery stage of polymer injection mining. Not only the amount of sewage is more, but also the composition of sewage is more complex. After the sewage is separated from the crude oil, it is pretreated. According to oilfield regulations, not only can the sewage not be discharged, but it must also be reinjected as the main water source for oilfield water injection. The pretreated sewage still contains a certain amount of crude oil and suspended solids, etc., and must be r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D24/12B01D24/46
Inventor 王自治
Owner 王自治
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