183 results about "Sulphide compound" patented technology

The invention discloses micro-alloying seamless pipeline steel and process for preparation. According to weight percentage, the range of the chemical components of the invention includes that C holds 0.08% to 0.20%, Si is equal to or less than 0.04%, Mn takes 0.60% to 1. 50%, S is equal to or less than 0.015%, P is equal to or less than 0.025%, Al is equal to or less than 0.04%, Ti is equal to or less than 0.04%, H is equal to or less than 2.5*10-4%, O is equal to or less than 25*10-4%, the rest is Fe and unavoidable foreign matters. The process for preparation comprises technique steps, including smelting, refining, continuous casting, hot rolling and slow cooling. Round steel with the size of phi 70 to 150 millimeters can be produced by the process for preparation. The seamless pipeline steel of the invention has perfect anti-sulphide stress corrosion (SSC resistance) capability and anti-HIC property. The pipeline steel which can substitute for welding pipe can be utilized in the filed of oil pipeline and the like, and the invention increases the reliability of material and adaptability of variety, in particular being adaptable for the low submarine temperature and corrosion-resistant environment and for manufacture of thick-walled tubes.

The invention provides a new method for desulfurization by oxidation based on alkaline ionic liquid catalyst. The method comprises the steps as follows: using an absorbent to selectively absorb sulfur compounds, using alkaline ionic liquid as a main catalyst, adding other ionic liquid as a catalyst accelerator, and finally, catalytically oxidising the reductive sulfur compounds in the presence of an oxidant. The method can be used for removing sulphides in gases or wastewater and recovering sulfur. The method has a simple technology, and the catalyst and the absorbent can both be regenerated and recycled, and the recovery rate of elemental sulfur can be more than 85(wt)%.

The invention relates the microorganism agent used to control oil field sulfate-reducing bacteria and its application. The invention can used to control oil field secondary depletion sulfate-reducing bacteria and microorganism. The water outlet system of secondary depletion technology comprises sulfate-reducing bacteria, H2S and sulphide, which can cause corrosion and pollution of sulphide. Microorganism agent comprises denitrifying bacteria culture, nutrescin and synergic nutrescin. 0.01-1wt% denitrifying bacteria culture, 5-100g/L culture and 10-200ppm synergic nutrescin. Microorganism agent can avoid SRB growing, SRB producing H2S, and removing sulphide. At the same time, metabolite can improve recovery efficiency.

The invention relates to a catalyst used for coal tar pitch hydrocracking lightening reaction. The preparation method of the catalyst comprises the following steps: taking an inorganic porous material as a carrier; selecting at least one of alumina, silica gel containing alumina, MCM-41 (mobile crystalline material-41) and SBA-15 (santa barbara amorphous-15); loading one or two of metal elements Fe, Ni, Co and Mo of active components onto the carrier in the form of metallic oxide or metallic sulphide by adopting a vacuum immersion method, wherein the metallic oxide or metallic sulphide content of the active components is 1-20wt% of the catalyst; then drying for 1-14 hours under the conditions that nitrogen is used for protection, normal pressure is kept and the temperature is 70-120 DEG C; and then roasting at the temperature of 500 DEG C for 3 hours. The catalyst in the invention has the advantages of simple preparation process, high catalytic activity, less reaction coking and high cracked light oil yield, thus being especially applicable to hydrocracking lightening of heavy component and pitch in coal tar, and the catalyst in the invention can cause conversion per pass of coal bar pitch to reach more than 70%.

There is disclosed herein a solution for removing a sulphur compound or carbon dioxide from a fluid and methods for its use, said solution comprising sulphuric acid, a metal at between about 0.05 to 10 percent by weight, an amine at between about 10 to 80 percent by volume and water. In one aspect, the sulphuric acid is in the form of a chelating agent and in another it is in the form of a derivative of a sulphur-based acidic compound. The sulphur compound may be hydrogen sulphide, carbonyl sulphide or a mercaptan. In one aspect, the method is practiced at temperatures significantly below zero. In another aspect, this invention is an acid/amine solution comprising sulphuric acid, sulphuric acid in the form of a chelating agent, or a.-derivative of a sulphur-based acidic compound and monoethanolamine. This solution may be used as a source of monoethanolamine.

The present invention relates to a process for producing a metallic and/or nonmetallic substrate which is protected against corrosion at least in regions and is, in particular, shiny, which comprises a) provision of a substrate having at least one surface which can be coated at least in regions and b) application of at least one metallic protective layer comprising a first metal, a first noble metal or a first metal alloy and at least one acid, an oxide, double oxide, hydrated oxide, sulphide, halide, nitride, carbide, carbonitride, boride, silicide, oxyhalide and/or salt of a second metal, of a second noble metal and/or of a second metal alloy. The invention further relates to a substrate which is protected against corrosion at least in regions and is, in particular, shiny, which comprises a substrate and at least one metallic protective layer comprising a first metal, a first noble metal or a first metal alloy and at least one acid, an oxide, double oxide, hydrated oxide, sulphide, halide, nitride, carbide, carbonitride, boride, silicide, oxyhalide, in particular oxyfluoride, and/or salt of a second metal, of a second noble metal and/or of a second metal alloy.

The invention relates to a maotai-flavour liquor treatment method and belongs to the technical field of maotai-flavour liquor production. The maotai-flavour liquor treatment method comprises the following steps of: (1) powder activated carbon adsorption, namely adding activated carbon with the weight equivalent to 0.1-0.15% of that of wine and the pore size of 2-5nm into maotai-flavour liquor, standing for 24 hours, extracting a sample, observing suspension or sedimentation degree of the activated carbon in the wine, if the activated carbon completely sedimentates in the wine, then adding the activated carbon with the weight equivalent to 0.1-0.125% of that of the wine and the pore size of 2-5nm, and standing for 48 hours; and (2) storing at constant temperature and humidity, namely filtering the maotai-flavour liquor treated by the activated carbon in the step (1) into a pottery jar in an underground spirit room by adopting a diatomite filtering machine, and carrying out constant temperature and constant humidity storage under the conditions that the temperature is 15-20 DEG C generally, the humidity is 80-85% and the storage period is about 3-4 months. According to the maotai-flavour liquor treatment method, powder activated carbon adsorption and constant temperature and humidity storage environment are combined and utilized in a maotai-flavour liquor treatment process, acrylic aldehyde, sulphide and the like are removed, turbidity removal, edulcoration and catalysis ageing are carried out, ageing of the wine is sped up, and maotai-flavour liquor ageing accelerating treatment is realized.

The invention discloses duplication of array brightness enhancement film by a large-viewing angle micro lens and a production method of a duplicating mould. The invention continuously duplicates micro lens array on a film base without birefraction using halogen free and sulphide free resin containing nano particle. On all directions of a horizontal projection, the micro lens array has the function of gathering and condensing view angle to ordinary light or vibration light through utilizing the refraction and reflection of light from high refraction medium to low refraction medium, and the axial brightness can be improved in a larger range of viewing angle. Through using novel hair metal casting technology, the invention provides a mould which can continuously duplicate micro lens array. The invention is used in backlight source module of a liquid crystal display.

A process for the preparation of crystalline microporous titanium silicates using ethylsilicate-40 and titanium peroxide as silicon and titanium sources respectively is described. The process permits a significant decrease in the production cost of titanium silicate containing higher amount of titanium (Si/Ti=20) because of cheaper raw materials as well as reduction in the quantity of tetarpropylammonium hydroxide (TPAOH) template (SiO2:TPAOH=1:0.06-0.1) required for preparation. The material obtained by the present invention is useful as an active catalyst in the reactions such as oxidation of hydrocarbons, alcohols, sulphides, and thioethers.

Compounds having the formulae and general formulae:

The invention discloses a sulphide stress corrosion uniaxial tensile test loading detection method and a monitoring system thereof. The method includes that an annular load sensor is added between a thrust bearing below a loading nut of stress corrosion tensile test equipment and a platform on a stress ring, and the sensor directly detects a load applied by tensile test; and the monitoring system adopts a load information acquisition module to acquire the output information of the load sensor, the load information acquisition module inputs the acquired information to a computer by virtue of data transmission bus, the computer carries out data storage, data operation and test condition monitoring on the information, and test condition information is input to a information notification module, and meanwhile the information notification module sends a information notice by virtue of an electronic mail assembly and a GPRS assembly. The invention can accurately detect the load applied by test online, and accuracy of test is ensured; and the monitoring system monitors the test process online, monitors the test condition, processes test data in real time and timely gives notification.

The invention relates to a visible light responding sulphide photocatalyst and a preparation method thereof, belonging to the field of inorganic nano photocatalytic materials. The catalyst comprises selenium-doped nano-metal sulphide semi-conductors including zinc sulphide, cadmium sulphide and bismuthous sulphide. The photocatalyst has photocatalytic activity in wider wavelength range and can treat toxic and harmful chemical substances through photodecomposition and purification under radiation of ultraviolet light, visible light or natural light.

The invention belongs to the field of photocatalytic materials, and provides a non-noble metal copper indium sulphide/zinc indium sulphide compound photocatalyst with a wide visible-light response range, high photocatalytic activity and stability and a preparation method and application in visible-light response photocatalysis hydrogen production thereof. Firstly, a mixed aqueous solution of zincchloride, indium chloride and thioacetamide is subjected to high-temperature hydrothermal reaction to prepare zinc indium sulphide powder; then the zinc indium sulphide powder is dispersed in water through ultrasound, a mixture, indium chloride, cuprous chloride and thioacetamide are mixed, and through high-temperature hydrothermal reaction, the copper indium sulphide/zinc indium sulphide compoundphotocatalyst is prepared. The photocatalyst does not contain noble metal, the cost is lower, and the synthesis method is simple, so that the photocatalyst has wide application prospects in the fieldof visible-light drive photocatalysis.

The invention relates to the use of a mixture comprising A) at least two different C1-C6 alkyl acrylate esters, B) at least one compound of the group of C1-C8 mercaptans, C4-C12 thiophenes, C2-C8 sulphides or C2-C8 disulphides, C) at least one compound from the group of norbornenes, C1- C6 carboxylic acids, C1-C8 aldehydes, C6-C14 phenols, C7-C14 anisoles or C4-C14 pyrazines and D) optionally, an antioxidant, for the odorisation of fuel gas with a methane content of at least 60 wt. %. The invention further relates to corresponding fuel gases and methods for odorisation of fuel gases.