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84results about How to "Reduce carbon monoxide" patented technology

Functional cigarette paper and preparation method

The invention provides functional cigarette paper and a preparation method. The functional cigarette paper comprises common cigarette paper prepared by using a paper making process, and the surface of the common cigarette paper is sprayed or dip-coated with a molecular capsulation material layer capable of reducing the contents of harmful substance, such as carbon monoxide, nitrosamine and the like in cigarette smoke. The preparation method comprises following steps of: finishing making of cigarette paper on a paper making machine, introducing a spraying device at the back of a combustion adjusting agent feed point of the paper making machine, preparing a molecular capsulation material into a molecular capsulation adsorbent solution, uniformly spraying the solution on the cigarette paper, and drying by a drying tank; or after finishing the making of the cigarette paper, preparing the molecular capsulation material into a molecular capsulation adsorbent alcohol solution, and uniformly dip-coating the solution to the cigarette paper on a coating machine, and then drying through a low-temperature drying cylinder until the alcohol fully volatilizes; and the addition amount of the molecular capsulation absorbing agent accounts for 1-20% of the mass percentage of the weight of the cigarette paper. The preparation method has the characteristics of simple molecular capsulation process, convenience for addition of the absorbing agent, and capability of reducing the content of harmful substances, such as carbon monoxide, nitrosamine and the like, in the cigarette smoke.
Owner:MINFENG SPECIAL PAPER

Catalyst capable of reducing carbon monoxide content in cigarette smoke, preparation method and application of same

The invention belongs to the field of harm and tar reduction of cigarettes, and relates to a catalyst capable of reducing carbon monoxide content in cigarette smoke at normal temperature, and a preparation method and the application of the same. The method comprises the following steps that: directing agents with different structures are synthesized into mesoporous alumina with a high specific surface and a plurality of surface basic sites as a carrier of the catalyst, and nanometer metal catalytic active components are highly dispersed on the surface of the carrier by adopting different methods, such as a homogeneous deposition-precipitation method, a deposition-precipitation method, an ion exchange method and the like to prepare a mesoporous metal alumina catalyst. The specific surface of the catalyst is 100 to 400 m<2> / g; a pore size is 2.0 to 10.0 nm; the surface basicity of the mesoporous metal alumina catalyst is 0.01 to 0.08 mmol / g; pH of a surface isoelectric point (an IEP value) is 8 to 10; and the catalytic active components are nanometer metal. The catalyst of the invention can oxidate carbon monoxide to carbon dioxide completely at normal temperature and can selectively reduce the carbon monoxide content in the cigarette smoke by 10 to 30 percent when the catalyst is added to a filter candle of the cigarette.
Owner:CHINA TOBACCO HUNAN INDAL CORP

Technique for recycling purge gas of device used for synthesizing methyl alcohol by utilizing synthesis gas

The invention relates to a technique for synthesizing methyl alcohol by utilizing synthesis gas in the field of chemical industry and in particular relates to a technique for recycling purge gas of device used for synthesizing methyl alcohol by utilizing synthesis gas. The technique comprises the following steps of: carrying out a water vapour transformation reaction on the purge gas of the methyl alcohol synthesizing device, wherein carbon oxide in the purge gas is converted into carbon dioxide and hydrogen, and methyl alcohol in the purge gas is reformed and decomposed into carbon dioxide and hydrogen; carrying out pressure swing adsorption separation purification on the purge gas after the transformation reaction, so as to obtain hydrogen with higher purity; and returning the hydrogen after pressure swing adsorption purification to a methyl alcohol synthesis process, so as to achieve higher feed gas utilization rate. According to the technique for recycling the purge gas of the device used for synthesizing methyl alcohol by utilizing the synthesis gas, content of hydrogen in the purge gas is increased, and discharge of carbon monoxide effective gas is also reduced; direct discharge of methyl alcohol is eliminated, and recycling of the methyl alcohol in the purge gas is realized; and the total consumption of the synthesis gas in methyl alcohol synthesis front processes such as low temperature transformation reaction and pressure swing adsorption decarbonisation is reduced, and direct discharge of carbon dioxide and methyl alcohol synthesis cost are reduced.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND

Cigarette formula grouped designing and processing method

The invention discloses a cigarette formula grouped designing and processing method. The cigarette formula grouped designing and processing method comprises the following steps: (1) screening raw materials of an auxiliary formula; (2) carrying out composition design of the auxiliary formula; (3) carrying out feed liquid design of the auxiliary formula; (4) processing tobacco shreds; (5) designingthe ratios of cut tobaccos; and (6) carrying out comparison and verification. In the method, two formulae are adopted, one is the auxiliary formula, the other one is a basic formula, the auxiliary formula adopts the air flow type drying process, and the basic formula adopts the tube-plate type drying process. The cigarette formula grouped designing and processing method has the beneficial effectsthat 1, the flexibility in adjusting the raw materials of the formulae is strong, the raw materials of the formulae can be adjusted by combining with the suitable processing technologies of the raw materials, thus the pertinence and effects of grouped processing are improved, and the improvement for the formulae of the product is facilitated; 2, the features of different processing technologies can be fully exerted, thus the utilization ratio of the raw materials is improved, the consumption of the raw materials is reduced, and the cost of the formulae is reduced; and 3, the tar content of theproduct and the content of carbon monoxide of smoke can be reduced.
Owner:SHANGHAI TOBACCO GRP CO LTD

In-cylinder direct injection double-gas-fuel internal combustion engine capable of realizing ultra-lean combustion and control method

InactiveCN104948296ASatisfy lean burn requirementsChange the disadvantage of lack of powerElectrical controlInternal combustion piston enginesInlet channelCombustion
The invention relates to an in-cylinder direct injection double-gas-fuel internal combustion engine capable of realizing ultra-lean combustion and a control method, aims to solve the problems that combustion is unstable in an ultra-lean-combustion mode of a gas fuel spark ignition type internal combustion engine, the oil consumption is high and emission is heavy under the work conditions of cold start and small load and the like and develops a spark ignition type in-cylinder direct injection double-gas-fuel internal combustion engine capable of realizing ultra-lean combustion and a control method of the internal combustion engine. The internal combustion engine adopts an internal combustion engine technology combining in-cylinder direct injection and gas inlet channel injection based on double gas fuel, the internal combustion engine is provided with a gas flow control device which cooperates with a piston roof in a special shape, and accordingly, good mixed gas layering is realized. According to the special combustion characteristic of gas fuel, ultra-lean mixed gas in higher compression ratio can be adopted; gas flow movement of the mixed gas entering a cylinder is controlled, meanwhile, gas inflow is increased, ultra-lean combustion of the mixed gas in the cylinder is realized, the heat transfer loss is reduced, the heat efficiency is improved, and oil consumption and pollutants are reduced.
Owner:JILIN UNIV

Method for preparing quicklime by continuously calcining limestone in shaft kiln

The invention relates to a method for preparing quicklime by continuously calcining limestone in a shaft kiln, belonging to a method for preparing quicklime by calcining limestone in a shaft kiln. The method is provided with a computer centralized control system, and implements the following steps according to a preset program: (1) while automatically controlling gas flow and pressure of kiln bottom combustion-supporting blast air and kiln top exhaust induced air, continuously calcining; (2) automatically discharging qualified calcining product quicklime in a periodical and discontinuous way; and (3) evenly mixing the raw material limestone and fuel coal according to a preset ratio, and automatically supplementing synchronous with the discharged product in a periodical and discontinuous way. The method provided by the invention has the advantages of high raw material coal heat efficiency, low consumption, stable operating conditions and low production cost. The heat efficiency of the fuel coal is greater than or equal to 80%. The heat utilization ratio is enhanced by more than 20% as compared with the prior art. The quality indexes the product quicklime are as follows: CaO>=94%, MgO<=3%, SiO2<=2%, and discretionary reduction<=10%. The consumption of the raw material coal is lowered, i.e. every ton of product quicklime consumes 115-120kg of fuel coal.
Owner:张金永

Preparation method of papermaking-process reconstituted tobaccos capable of reducing content of CO in mainstream smoke

ActiveCN104013096AStrong adaptability of production processReduce carbon monoxideTobacco preparationAlcoholPapermaking
The invention relates to a preparation method of papermaking-process reconstituted tobaccos capable of reducing the content of CO in mainstream smoke. The CO release amount of papermaking-process reconstituted tobacco products produced at home and abroad is relatively high and basically the same as that of pure tobacco shreds, and even is greatly higher than that of the tobacco shreds. The preparation method comprises the following steps: soaking lalang grass rhizome in cold water, boiling, filtering to obtain a crude extract of lalang grass rhizome, soaking the crude extract in the cold water, and continuously repeating the step for three times to obtain a final crude extract of lalang grass rhizome; processing the final crude extract of lalang grass rhizome obtained in the step 1 by adopting an alcohol-water method to obtain a fine extract of lalang grass rhizome; mixing the fine extract of lalang grass rhizome, a tobacco flavoring module and tobacco raw material concentrated liquid according to a ratio of 2 : 1 : 12 to obtain coating liquid, and coating a papermaking substrate with the coating liquid to prepare the functional papermaking-process reconstituted tobaccos. The content of CO in the mainstream smoke of a cigarette containing the functional papermaking-process reconstituted tobaccos can be reduced to 1.0mg / cigarette.
Owner:CHINA TOBACCO SHAANXI IND

Energy-efficient environment-friendly boiler equipment and energy-saving treatment method

The invention provides energy-efficient environment-friendly boiler equipment. A water purification system, a water supply pump, a first electronic valve, a check valve, a pressure reduction valve, a safety valve, a second electronic valve, a water supply pipeline pressure probe and a boiler are arranged on a water supply pipeline. A control system controls the first electronic valve and the second electronic valve to open and close fittingly, the water supply pipeline pressure probe provides real-time pressure data to the control system, and the control system controls starting, stopping and rotation speed of the water supply pump. An evaporator and a superheater are arranged in the boiler; the evaporator makes use of air heat of a combustion chamber to generate water vapor by heating liquid water and supplies the water vapor to the superheater; the superheater makes use of flame heat of the combustion chamber of the boiler to generate oxyhydrogen plasmas and superheated water vapor by subjecting the water vapor to superheating retreatment, and the generated oxyhydrogen plasmas and superheated water vapor are jetted to a coal layer in the boiler through a jet pipe and then chemically react with coal to generate carbon monoxide and hydrogen so as to form efficient and clean gaseous combustion in the combustion chamber.
Owner:徐泽蛟

Upper combustion and balanced oxygen supply type biomass particle cooking furnace

The invention discloses an upper combustion and balanced oxygen supply type biomass particle cooking furnace. The upper combustion and balanced oxygen supply type biomass particle cooking furnace comprises a combustion hearth containing cavity arranged inside the furnace wall; a secondary air inlet sleeve containing cavity is arranged at the upper end of the combustion hearth containing cavity in a communicating mode; a primary air inlet sleeve containing cavity is arranged at the lower end of the combustion hearth containing cavity in a communicating mode; a combustion hearth with an upper opening and a lower opening is arranged inside the combustion hearth containing cavity; a secondary air inlet sleeve with an upper opening and a lower opening is arranged inside the secondary air inlet sleeve containing cavity; air inlet holes are evenly formed in the secondary air inlet sleeve in the circumferential direction; a primary air inlet sleeve with an upper opening and a lower opening is arranged inside the primary air inlet sleeve containing cavity; multiple circles of streamline air inlet holes are formed in the primary air inlet sleeve in the circumferential direction; the lower opening of the primary air inlet sleeve is closed by a fire grate; and a draught fan communicates with the secondary air inlet sleeve containing cavity and the primary air inlet sleeve containing cavity through air flues correspondingly. Biomass particles are combusted sufficiently, fire is strong, the combustion time is long, the content of carbon oxide in exhausted smoke gas is low, and energy conservation and environmental protection of combustion of biomass particle fuel are achieved.
Owner:HENAN AGRICULTURAL UNIVERSITY

Multifunctional benzoxazine composite material and preparation method thereof

ActiveCN107474208AReduce the ring-opening polymerization temperatureReduce consumption costAlcoholPolyphosphazene
The invention discloses a multifunctional benzoxazine composite material. The multifunctional benzoxazine composite material is prepared from benzoxazine monomers through an open-loop curing reaction under the catalytic action of sulfonated crosslinking structured polyphosphazene microspheres. A preparation method comprises steps as follows: S1, the sulfonated crosslinking structured polyphosphazene microspheres are prepared; S2, the benzoxazine monomers are dissolved in solvents, the sulfonated crosslinking structured polyphosphazene microspheres are added, and a mixture is subjected to ultrasonic dispersion; S3, acetone and alcohol as the solvents are removed through evaporation, and air in the mixture is removed; S4, the mixture of the benzoxazine monomers and the sulfonated crosslinking structured polyphosphazene microspheres is poured into a glass mold while being still hot; S5, the glass mold is cured for 2-3 h at the temperature of 150-180 DEG C, cured for 1-3 h at the temperature of 190-200 DEG C and cooled, and the multifunctional benzoxazine composite material is obtained. The open-loop curing temperature of the benzoxazine monomers in the preparation process of the composite material is reduced, and the composite material integrates remarkable flame retardance and good fracture toughness property, thereby being widely applied to the field with higher requirements for overall performance of the materials.
Owner:SHAANXI TIANCE NEW MATERIAL TECH
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