A method and device for removing iron

Abstract

A method and device for removing iron, characterized in that it includes a magnetic field, a channel with a fluid inlet at the top and a fluid outlet at the bottom that can enter and exit the magnetic field relatively, a soft magnetic medium set in the channel, and a power set on the fluid outlet Open / close the valve, the upper part of the channel is closed, when the power open / close valve is fully opened, the opening degree makes the fluid level higher than the soft magnetic medium in the channel, and the amount of outflow is consistent with the amount of fluid entering the channel. A liquid level detector is set above the medium. Compared with the prior art, the present invention has the advantages of being able to effectively and smoothly remove iron from the fluid without causing accumulation loss of useful solids in the fluid, low cost and high operational reliability.

Description

technical field [0001] The invention relates to a fluid iron removal technology. Background technique [0002] The existing fluid iron removal technology includes the technology of removing iron from the fluid flowing through the magnetic medium in the channel of the magnetic field in the magnetic field. There are two methods for injecting the fluid into the magnetic medium in the channel, one is from top to bottom In the lower injection channel, one is injected from bottom to top. The way of injecting fluid from top to bottom in the prior art is to fully open the outlet at the bottom of the channel to ensure that the speed of fluid outflow is not less than the speed of fluid injection and avoid fluid filling. The result of this method is that the fluid quickly passes through the magnetic medium in the channel. In this way, the magnetic medium in the channel removes iron from the fluid flowing through it without being soaked by the fluid. The magnetic medium only flows thro...

AI Technical Summary

Problems solved by technology

[0002] The existing fluid iron removal technology includes the technology of removing iron from the fluid flowing through the magnetic medium in the channel of the magnetic field in the magnetic field. There are two methods for injecting the fluid into the magnetic medium in the channel, one is from top to bottom In the lower injection channel, one is injected from bottom to top. The way of injecting fluid from top to bottom in the prior art is to fully open the outlet at the bottom of the channel to ensure that the speed of fluid outflow is not less than the speed of fluid injection and avoid fluid filling. The result of this method is that the fluid quickly passes through the magnetic medium in the channel. In this way, the magnetic medium in the channel removes iron from the fluid flowing through it without being soaked by the fluid. The magnetic medium only flows through the middle part of the channel, so that the magnetic medium cannot fully play its role. Secondly, the flow rate of the fluid is fast, and the scouring force of the fluid is easy to take away the ferromagnetic substances adsorbed by the magnetic medium.

For this reason, people slow down the speed of the fluid passing through the magnetic medium in the channel by raising the height of the outlet (as disclosed in patent application 2012104901281), but it cannot effectively solve the above problems, because the height of the outlet is often not It should be higher than the lowest point of the magnetic medium, otherwise it will affect the flow rate of the fluid, and it is easy to cause useful solids in the fluid (such as ceramic powder) to deposit on the bottom of the channel to block the channel. Moreover, it cannot completely solve the problem that the fluid cannot soak the magnetic For the problem of medium, of course, people can also use closed-loop control to control the fluid to soak the magnetic medium in the channel to remove iron. However, this technology requires electric valves that can adjust the opening at any time, which is affected by the working environment. And determined by the nature of this kind of electric valve itself, this kind of electric valve that can adjust the opening at any time is extremely easy to be polluted and damaged by fine solid particles in the leaked fluid. Moreover, this kind of electric valve that can adjust the opening at any time Valves are expensive and have high requirements for the use environment

And another injection method from bottom to top can solve the problem of fluid soaking magnetic medium, but because it is injected from bottom to top, and the flow rate of fluid is low, under the double action of gravity and magnetic medium, the useful Solids are easy to accumulate and settle to the bottom of the channel, causing great loss

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