37results about How to "Sulfur resistance" patented technology

A solid oxide fuel battery anode and the preparation method, the characteristic is: adulterates the titanic mine cadmium acid lanthanum or the titanate compound oxide as the anode structure framework and the main electron conducting phase, uses the ion infusing method, the macromolecule modeling board method, the sol-gel method, or the suspending grain pulp spreading method, prepares the nanometer grain anode active substance multi-hole film with the thickness of 0.05-5 micron in the inner and outer hole surface of the multi-hole anode structure framework; the anode active substance includes the ceric oxide, or the adulterating ceric oxide, or the zirconia based oxygen ionic conductor electrolyte, or the cerate based proton conductor electrolyte, or the mixture of the above active substance, or the above active substance adding a small quantity of Ni or Ni-Cu and V2O5. The invention is structure stabilization, high conducting rate, high catalyzing activity of the fuel oxidation, matching with the closing material at physics and chemistry, structure size stabilization, anti-carbon deposition, is fit for the fuel operation of the hydrocarbon directly.

A catalyst for preparing low-carbon alcohol mixture from synthetic gas contains Mo (2-40 %), Ni (4-10%), Mn (0.1-5.0%), K (5-15%), S (20-40%) and bentone, and is prepared through reaction of ammonium sulfide solution or hydrogen sulfide gas on ammonium molybdate, adding concentrated acetic acid, thermal stirring, cooling for deposition, adding deionized water for dissolving doposit to obtain solution of ammonium thiomolybdate, dropping the solution along with the mixed solution of nickel acetate and manganese acetate in acetic acid to form black deposit, filtering, washing, baking, mixing with bentone, and tabletting. Its advantages are high resistance to S and no carbon deposit.

The invention provides a catalyst for catalytic combustion of VOCs and a preparation method and application thereof, and belongs to the field of catalyst preparation. The invention particularly provides a core-shell type catalyst which is formed by covering, with a SiO2 shell, a catalyst taking a sulfuric acid modified TiO2-CeO2 composite oxide as a carrier and loaded with noble metal ruthenium oxide and / or transition metal vanadium oxide as active components. The CeO2 has good oxygen mobility and can significantly enhance the oxidation-reduction performance of the catalyst, so that the catalyst has efficient VOC catalytic oxidation activity; the carrier is soaked in sulfuric acid; the surface acidity is enhanced to inhibit adsorption of acidic impurity components such as SO2, HCl and H2S,the active components RuO2 and V2O5 also have sulfur resistance, so that the sulfur poisoning resistance of the catalyst is remarkably improved, the silicon shell can inhibit contact between chlorideand the active components, and inactivation of the active components of the catalyst due to chlorine poisoning is avoided; or honeycomb ceramic can be used as a matrix to prepare a coated type catalyst.

The invention relates to a catalyst for removing alkene material flow impurity through deep purification at room temperature, a preparation method and an application thereof. According to the invention, the catalyst takes cobalt in an oxidation state as an active component, zinc oxide is taken as a first auxiliary agent, cerium oxide is taken as a second auxiliary agent, the weight ratio of the cobalt in the oxidation state to zinc to cerium is 10-95: 1-30: 1-40, a coprecipitation method is employed for preparation, cobalt in the oxidation state as an active component, zinc oxide and cerium oxide are taken as the auxiliary agents, the prepared nano cobalt-zinc-cerium composite metal oxide catalyst has a sea urchin-shaped microscopic microstructure, and has the advantages of large specific surface area, small particle size, strong CO adsorption capability, and high oxygen vacancies activity, CO can be thoroughly removed (less than or equal to 5ppb) at room temperature, the catalyst has good anti-sulfur performance and water resistance performance, stability is good, and the preparation technology is simple. The catalyst does not require reduction and activation, microscale carbon monoxide in the alkene material can be deeply removed to 5 ppb or below under condition from room temperature to subzero (-20 DEG C-40 DEG C), and can be used in fields of petrochemical industry and environmental protection.

The invention relates to a mixed titanate support solid electrolyte multilayer film of a solid oxide fuel cell and a manufacturing method of the mixed tianate support solid electrolyte multilayer film of the solid oxide fuel cell. The multilayer film is formed by a transition layer film and an electrolytic layer film which are sequentially formed through depositing on an anode main electronic conduction phase and a structural framework increase phase; the anode main electronic conduction phase is porous perovskite type mixed titanate composite oxides; and the structural framework increase phase is aluminum oxide or mixed zirconium oxide or mixture of the aluminum oxide and the mixed zirconium oxide. The manufacturing method provided by the invention comprises the steps: combining the casting method and the screen printing method, adopting the casting method to manufacture a support green body, adopting the screen printing method to respectively form the transition layer and the electrolytic layer on the support green body through depositing, and firing the support green body, the transition layer and the electrolytic layer at certain temperature to obtain the multilayer film with different dimensions. Compared with the prior art, the porous anode support formed in the invention keeps stable structure in reducing atmosphere for a long time, has high electronic conductivity, can be subjected to oxidation-reduction circulation for many times, resists carbon deposition and has sulfur resisting property.

The invention relates to a method for preparing a low-temperature SCR (Selective Catalytic Reduction) denitration catalyst. The catalyst comprises the following raw materials: attapulgite, tetrachlorostannane pentahydrate, iron nitrate nonahydrate, cerium nitrate hexahydrate, barium nitrate, citric acid and ethyl alcohol. The method comprises the following three steps of: (1) pretreatment of the attapulgite; (2) composite deposition of active constituents and the attapulgite; and (3) calcination of the composite catalyst, wherein an intermittent stirring acid treatment method is adopted in the pretreatment step; the method for preparing the composite catalyst is a sol-hydrothermal method; and a temperature programmed calcination method is adopted in the catalyst calcining step. The method is low in production cost and simple in operation and the prepared denitration composite catalyst is good in low temperature performance, high in efficiency and renewable.

The invention discloses a 120ksi primary grade sulfur-resistant drill pipe, which comprises the following chemical elements in percentage by weight: 0.24 to 0.30 percent of C, 0.1 to 0.5 percent of Si, 0.8 to 1.4 percent of Mn, 0.8 to 1.4 percent of Cr, 0.5 to 0.8 percent of Mo, 0.05 to 0.10 percent of V, 0.01 to 0.05 percent of Nb, 0.002 to 0.007 percent of Ca, less than or equal to 0.015 percent of P, less than or equal to 0.005 percent of S, and the balance of Fe and other inevitable impurities. Correspondingly, the invention also provides a manufacturing process of the 120ksi primary grade sulfur-resistant drill pipe, wherein the 120ksi primary grade sulfur-resistant drill pipe has a certain capability of sulfur resistance while maintaining the strength of 120ksi grade by controlling a quenching step and a tempering step. Furthermore, the primary sulfur-resistant drill pipe has the advantage of low cost.

The invention relates to a preparation process of a renewable anti-sulfur Fe-Mn-Ce magnetic adsorbent for flue gas demercuration. A high-efficiency mercury removal adsorbent for mercury technology, with strong mercury removal performance, magnetic separation, renewability, and anti-SO 2 Poisoning and other advantages, can achieve efficient mercury removal and recycling of coal-fired flue gas.

The present invention provides a polycyclic aromatic hydrocarbon hydrogenation catalyst, which adopts molybdenum disulfide (MoS2) catalyst prepared in a microemulsion system. The molybdenum disulfide catalyst provided by the invention has the advantages of sulfur resistance, high hydrodesulfurization activity, high hydrogenation activity of polycyclic aromatic hydrocarbons, simple process operation and the like for the hydrogenation reaction of polycyclic aromatic hydrocarbons.