Process for preparing ball-type desulfurizer with high sulfur capacity and product thereof
View Patent ↗The present invention provides a process for preparing ball-type desulfurizer with high sulfur capacity, comprising the following steps: placing initial balls in a rolling equipment; wetting the surface of the initial balls with an aqueous solution of an organic binder; then alternately adding non-crystalline iron oxide hydroxide and the aqueous solution of the organic binder to gradually form small balls of non-crystalline iron oxide hydroxide with high sulfur capacity and different diameters; and adjusting the shape of the small balls and then roasting or naturally drying the small balls. In the desulfurizer prepared by this method, the initial balls constitutes 0.98 wt %-9.03 wt % of the desulfurizer, the non-crystalline iron oxide hydroxide constitutes 90.29 wt %-98.62 wt % of the desulfurizer, and the organic binder constitutes 0.58 wt %-0.89 wt % of the desulfurizer. The present invention solves the problems that the desulfurizer with high sulfur capacity in the prior art has a high binder content and poor water resistance and diffusion performance, and provides a process for preparing a desulfurizer with high sulfur capacity, wherein a desulfurizer with high sulfur capacity and low binder content, good water resistance, good diffusion performance can be prepared.
1. A process for preparing a ball-type desulfurizer with a high sulfur capacity, the process comprising the following steps:
(1) placing initial balls made of a substance not including non-crystalline iron oxide hydroxide and an organic binder into a rolling machine; (2) wetting a surface of the initial balls with an aqueous solution of the organic binder;
(3) then alternately adding the non-crystalline iron oxide hydroxide and the aqueous solution of the organic binder to the initial balls, so that the non-crystalline iron oxide hydroxide adheres to the initial balls via the organic binder to form balls with different diameters; and
(4) adjusting a shape of the balls obtained in the step (3); and
(5) then roasting or drying the balls in the step (4) to yield the ball-type desulfurizer with the high sulfur capacity;
wherein, the initial balls constitute 0.98 wt %-9.03 wt % of the desulfurizer,
the non-crystalline iron oxide hydroxide constitutes 90.29 wt %-98.28 wt % of the desulfurizer, and
the organic binder constitutes 0.74 wt %-0.89 wt % of the desulfurizer.
2. The process of claim 1 , wherein, said the initial balls are selected from the group consisting of alumina pellets, perlite powder, coarse rice, millet and any combination thereof.
3. The process of claim 1 , wherein, in the aqueous solution of the organic binder, the organic binder constitutes 1-3 wt % of said the aqueous solution of the organic binder.
4. The process of claim 2 , wherein, in the aqueous solution of the organic binder, the organic binder constitutes 1-3 wt % of-said the aqueous solution of the organic binder.
5. The process of claim 1 , wherein, the diameter of each of the balls obtained in the step (3) is 4-10 mm.
6. The process of claim 2 , wherein, the diameter of each of the balls obtained in the step (3) of non crystalline iron oxide hydroxide with high sulfur capacity is 4-10 mm.
7. A process for preparing a ball-type desulfurizer with high sulfur capacity, comprising the following steps:
(1) placing initial balls of a substance not including a mixture of the non-crystalline iron oxide hydroxide and an active carbon powder into a rolling machine; in a rolling equipment;
(2) wetting the surface a surface of the initial balls with an aqueous solution of an organic binder;
(3) then alternately adding a mixture of the non-crystalline iron oxide hydroxide and the active carbon powder, and the aqueous solution of the organic binder to the initial balls, so that the mixture of the non-crystalline iron oxide hydroxide and the active carbon powder adheres on the initial balls via the organic binder to from the balls with different diameters;
(4) adjusting a shape of the balls obtained in the step (3); and
(5) then roasting or naturally drying the small balls obtained in the step (4) to yield the ball-type desulfurizer with the high sulfur capacity;
wherein, the initial balls constitutes 0.49 wt %-7.35 wt % of the desulfurizer,
the non-crystalline iron oxide hydroxide constitutes 82.76 wt %-93.69 wt % of the desulfurizer,
the organic binder constitutes 0.61 wt %-0.89 wt % of the desulfurizer, and
active carbon powder constitutes 4.93 wt %-9.20 wt % of the desulfurizer.
8. The process of claim 7 , wherein, the diameter of the balls obtained in the step (3) is 4-10 mm.