Desulfuration adsorbent

Abstract

The invention discloses a desulfuration adsorbent. The desulfuration adsorbent is composed of the following raw materials of, by weight, 33-41 parts of nano attapulgite, 1-5 parts of cyclohexyl methyl ketone, 7-15 parts of acrylic acid, and 11-19 parts of ammonium metavanadate. According to the desulfuration adsorbent, the nano attapulgite serves as one of the raw materials and mixed with the cyclohexyl methyl ketone, grinding is conducted, and the ammonium metavanadate, the acrylic acid and the like are used for treatment, so that the desulfuration adsorbent is prepared; the desulfuration adsorbent prepared in the this way is large in sulfur capacity, good in sulfur selectivity, high in desulfuration percent and capable of reducing sulfur to 1ppmw; and in addition, the desulfuration adsorbent is long in service life, environmentally friendly and free of secondary pollution. The preparation process of the desulfuration adsorbent is simple, operation and control are easy, the performance is stable, the production cost is low, and the desulfuration adsorbent is suitable for industrialized production. When the desulfuration adsorbent is used for desulfuration of gasoline, the process operating conditions are mild, dsulfuration can be conducted under ordinary pressure and at a low temperature, accordingly energy consumption is reduced, and the operation cost is lowered.

Description

technical field [0001] The invention relates to the technical field of desulfurization materials, in particular to a desulfurization adsorbent. Background technique [0002] The ultra-deep desulfurization of gasoline has become an important problem to be solved worldwide. The combustion of sulfur in gasoline produces sulfur oxides (SOx), which is one of the main pollutants in the atmosphere. When it is discharged into the air, it will form acid rain and damage the ecological environment. In addition, sulfur oxides can also corrode and damage engine components, poison motor vehicle exhaust gas treatment catalysts, reduce their catalytic activity, increase the emission of particulate pollutants, and aggravate urban environmental pollution. Therefore, limiting the sulfur content is an important indicator in the standard of motor gasoline, and also a key factor in evaluating the cleanliness of gasoline. Only 34% of foreign gasoline blending components are catalytic cracking (F...

AI Technical Summary

Problems solved by technology

However, the desulfurizers in the prior art generally have the following deficiencies: 1. The desulfurization depth is not enough, and it is difficult to desulfurize to below 5 ppmw; 2. The specific surface area of ​​the adsorbent is low, and the adsorption capacity of sulfur is relatively limited; 3. The operating conditions of the desulfurization process are harsh. And the energy consumption is high, the operation cost is high; 4. The desulfurization process is not friendly to the environment; 5. The selectivity of the desulfurizer is low and the service life is short

In addition, most of the existing desulfurizers use activated carbon, ZSM-5 and other materials, and there is very little information about the use of nano-concave clay

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