6results about How to "High desulfurization activity" patented technology

The utility model relates to the technical field of flue gas desulfurization, and particularly provides a small movable high-activity calcium-based desulfurizing agent preparation device which comprises a feed port, a first-stage digester, a second-stage digester, a third-stage digester, an atomizing nozzle, a liquid injection port, a spraying control system, a double-shaft spiral propelling rod, a heating layer, an oil injection port, a temperature control device, a discharge port and the like. The feeding hole is positioned above the inlet of the first-stage digester; the first-stage digester, the second-stage digester and the third-stage digester are sequentially arranged from top to bottom; an upper-stage outlet is connected with a lower-stage inlet; atomizing nozzles are assembled at the tops of the first-stage digester and the second-stage digester and are connected with a liquid injection opening and a spraying control system; a double-shaft spiral propelling rod is mounted in the center of a cavity of the digester; heating layers are arranged on the two sides and the bottom of a stirring tank of the digester and are connected with an oil injection port and a temperature control device; and the discharge hole is positioned below the outlet of the third-stage digester. The utility model solves the problem of large occupied area of production equipment in the existing quicklime digestion technology, and meets the requirements of various factories on small-batch preparation of calcium-based desulfurizers anytime and anywhere.

The invention provides a diesel oil hydrofining catalyst. The diesel oil hydrofining catalyst comprises a modified alumina carrier and an active component, the active component is an oxide of active metal, and the active metal comprises at least one of Co, Mo, Ni and W; the modified alumina carrier is alumina hydrothermally modified by ammonium fluoborate; the B / L acid value of the modified alumina carrier is 0.07 to 0.15; the specific surface area is 240-400 m < 2 > / g, and the pore volume is 0.55-0.80 mL / g. The diesel oil hydrofining catalyst containing the B acid can promote removal of sulfides with steric hindrance in distillate oil through a direct desulfurization reaction path and a hydroisomerization-direct desulfurization reaction path, promote adsorption and removal of nitrides, and reduce mutual inhibition effect in the removal process of the sulfides and the nitrides; and the diesel oil hydrofining catalyst has excellent hydrogenation activity.

The present invention provides a desulfurization adsorbent and a preparation method and application thereof. The desulfurization adsorbent comprises a carrier, a first metal component and a second metal component. The carrier is compounded from raw materials including small-pore SB powder, silicon oxide and potassium-modified macroporous pseudo-boehmite, wherein the pore volume of the small-pore SB powder is not greater than 0.6 mL / g, and the pore volume of the potassium-modified macroporous pseudo-boehmite is not less than 0.8 mL / g; the first metal component comprises zinc and nickel, and the second metal component comprises cobalt and / or copper. The desulfurization adsorbent of the present invention has the advantages of high strength, good stability and high desulfurization efficiency, and is particularly suitable for desulfurization treatment of heavy oil.

The application belongs to the technical field of adsorptive desulfurizer, and particularly relates to a high-strength nanometer zinc oxide composite desulfurizer and a preparation method thereof. The composite desulfurizer contains the following raw materials in parts by weight: nanometer zinc oxide / activated carbon composite material 65-70 parts, filler 15-25 parts, and binder 40-50 parts. The desulfurizer prepared by the application has high mechanical strength, high sulfur capacity and high desulfurization efficiency.

The invention discloses a copper-based deep desulfurizer which is prepared by the following steps: dissolving soluble copper salt in water to obtain a solution A, dissolving an alkaline precipitator in water to obtain a precipitator solution B, mixing the solution A and the precipitator solution B according to a certain proportion in a stirring kettle, and uniformly stirring to obtain the copper-based deep desulfurizer. Adding a certain amount of a solution B prepared by the same method to adjust the pH value of the solution to be alkaline, heating the solution to 55-70 DEG C, continuously reacting for a period of time, and filtering, washing and drying to obtain a solid C; roasting the solid C to obtain a solid D; and taking a certain amount of the solid D, ammonium molybdate, zinc oxide powder and a binder, mixing, adding water, extruding into strips, curing by using 120 DEG C water vapor generated by adding hot water in a closed reaction kettle, and drying after curing to obtain the copper-based deep desulfurizing agent. The desulfurizer has an ultra-high-precision removal effect on sulfides, and the desulfurization precision of the existing zinc oxide desulfurizer is improved from less than or equal to 0.03 ppm of total sulfur to less than or equal to 0.005 ppm of total sulfur.

This invention provides a desulfurization adsorbent, its preparation method, and its application. The preparation method includes: dissolving a complexing agent in water and adjusting its pH value to obtain a treatment solution; wherein the complexing agent includes one or more combinations of polyethylene glycol, hexadecyltrimethylammonium bromide, and ethylenediaminetetraacetic acid; dispersing activated alumina in the treatment solution and heating under reflux to obtain modified alumina; dispersing the modified alumina in a solution containing an alkaline substance, then mixing it with a solution containing an active metal, hydrothermally crystallizing, and calcining to obtain the desulfurization adsorbent. The medium- and low-temperature flue gas solid desulfurization adsorbent provided by this invention has metal ions bonded to aluminum species in activated alumina and uniformly distributed on the surface of activated alumina, exhibiting high stability and sulfur capacity.