Desulfurizer, desulfurizing method and filter
A desulfurizing agent and modification technology, applied in the field of desulfurization, can solve problems such as poor removal effect, and achieve the effects of increasing adsorption capacity, reducing use cost and improving desulfurization effect.
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[0046] There are many ways to prepare ternary copper, for example, referring to the method disclosed in CN1072870, after using copper salt to reduce to copper powder, then generate cuprous oxide and cupric oxide under the action of oxygen; refer to the disclosed application number 201610331008. According to the method, the ternary copper is prepared through the neutralization reaction between the copper powder and the copper oxide; or the ternary copper is prepared through the reduction reaction of the copper oxide. Of course, commercially available ternary copper products can also be directly used. It should be understood that when using different methods to prepare ternary copper, the final product may contain trace amounts of other substances due to differences in raw materials.
[0047]As a preferred solution, when used as a desulfurization catalyst, ternary copper with micropores formed on the particle surface should be used. In this way, the catalyst has a relatively la...
Embodiment 1
[0060] In this embodiment, the mass ratio of ternary copper to modified coconut shell activated carbon is 1:2. Wherein, the mass percentage of copper oxide in the ternary copper is 1%, the mass fraction of copper is 75%, and the mass fraction of cuprous oxide is 21%. The surface of the modified coconut shell activated carbon is loaded with iron oxide, and its load is 5% of the mass of the coconut shell activated carbon. The housing 110 of the filter 100 adopts a cylindrical steel pipe with an aspect ratio of 20:1, and a layer of ternary copper layer 141 and a layer of modified coconut shell activated carbon layer 142 are arranged in the housing 110 .
[0061] The gasoline with a sulfur content of 95 ppm is desulfurized by using the above-mentioned desulfurization filter 100, and the residence time of the gasoline in the filter 100 is 5 minutes. The sulfur content of the treated gasoline is detected to be 5.5ppm, and the desulfurization rate reaches 94.2%.
Embodiment 2
[0063] The difference between this embodiment and Embodiment 1 is that in the ternary copper, the mass percentage of copper oxide is 1%, the mass fraction of copper is 56%, and the mass fraction of cuprous oxide is 43%. All the other parameters of the desulfurizer and the parameters of the desulfurization test are the same as in Example 1. After testing the treated gasoline, the sulfur content is 5ppm, and the desulfurization rate is 94.7%.
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