75 results about "Fomes" patented technology

The invention discloses an antiflaming plywood or a veneer lamination, which comprises a wood veneer, a phosphorus-nitrogen fire retardant, a boron fire retardant, oxide or hydroxide of magnesium, aluminum, calcium, zinc, titanium and barium, and an adhesive, which have over dry weight percentage ratio being 100:2-50:0.2-30:4-40. The antiflaming plywood or the veneer lamination has the characteristics of low carbonization speed, accordance with related standards on physical mechanics property, flame retardant property and smoke toxicity, low formaldehyde emission values, and the like; the invention further discloses a manufacturing method for the antiflaming plywood or the veneer lamination, which comprises the following steps: impregnating the phosphorus-nitrogen fire retardant, the boron fire retardant, the oxide or hydroxide of magnesium, aluminum, calcium, zinc, titanium and barium on the wood veneer, coating the adhesive, and conducting processing of assembling, prepressing, hot pressing, sand polishing and the like.

The invention relates to a qualitative and quantitative analysis method for polyoses, which comprises the following steps: (1) the zymohydrolysis and the verification of the polyoses: measuring the content of a polyoses water solution by a colorimetric method; (2) comparing the change of a polyoses mapping before and after zymohydrolysis by HPSEC-ELSD analysis; (3) saccharide ingredient direct HPLC analysis of a polyoses zymohydrolysis solution or HPLC analysis after pre-column derivatization: identifying polyoses mapping and chromatogram peaks by taking a standard monosaccharose, a uronic acid, a disaccharide, and the like as contrasts and taking a chromatogram peak mass-to-charge ratio as reference, and using stable characteristic sections as a quantitative analysis index; and (4) realizing the qualitative and quantitative analysis of the polyoses by establishing polyoses zymohydrolysis responding characteristics and polyoses zymohydrolysis mapping which are based on structural information through the independent or combining application of the steps. The qualitative and quantitative analysis method can be used for the identification and quantitative measurement of the polyoses of traditional Chinese medicine, such as panax, panax pseudoginseng, gen-seng, aweto, cordyceps, ganoderma lucidum, fomes japonica, milk veteh, angelica, and the like and provides an effective method for controlling the quality of the polyoses and the products thereof.

The invention discloses the preparation of a compound polysaccharide humectant and application of the compound polysaccharide humectant to cigarettes. The preparation method comprises the following steps of: (1) crushing compound Chinese medicines such as Adenophora elata, dwarf lilyturf tuber, and platycodon grandiflorus, adding water, slightly boiling, performing reflux extraction, mixing extracting solution, and filtering; (2) adding protamex and high-temperature amylase into the extracting solution, and performing enzymolysis; (3) absorbing naturally cooled enzymolysis extracting solution by using a macroporous resin column, and collecting flow-through liquid; (4) concentrating the flow-through liquid in a rotary evaporator until the moisture is not evaporated to obtain the polysaccharide humectant; and (5) dissolving the polysaccharide humectant in water and adding into cut tobacco, wherein the humidification effect of cigarettes is remarkably improved, and the dry sensation of the cigarettes is reduced and the sweet degree of the cigarettes is strengthened when the cigarettes are smoked. The invention has the outstanding advantages that: the compound polysaccharide humectant can improve the aesthetic quality of the cigarettes, reduce the dry sensation of smoke, improve the sweet degree and comfort degree, and has remarkable effects of promoting the secretion of saliva or body fluid and humidifying; and the application of the technology cannot change the conventional cigarette processing technology, and the technology has actual application value.

The invention discloses a microbial preparation for tobacco, a preparation method and an application thereof, and belongs to the technical field of additives. According to the invention, liquid fermentation culture of a producing strain is adopted to obtain the corresponding microbial preparation. The producing strain is bacillus subtilis (Van3), and the strain was preserved in general microbiological culture collection center of China committee for culture collections of microorganisms in Aug 16th, 2010, and has a preservation number of CGMCC No.4091. The microbial preparation of the invention can obviously improve the stem quality such as aroma volume, cheerfulness, and the like, reduces miscellaneous gas and irritation, decreases smoke concentration and strength, makes aftertaste become comfortable, and thus further increases the mixing amount of stems in a cigarette so as to realize the purposes of harm reduction, tar reduction, and cigarette production cost reduction.

The invention discloses a sintering fuel gas desulfurization and denitrification system which comprises a CaO tank, a CaO digestion tank, an oxidant tank, a size tank, an inlet fuel gas monitoring device, a rotary atomization absorption tower, a cloth bag dust remover and an outlet fuel gas monitoring device. Sintering fuel gas enters the rotary atomization absorption tower. The rotary atomization absorption tower is respectively connected with the size tank and the cloth bag dust remover. The size tank is respectively connected with the CaO digestion tank and the oxidant tank. CaO powder in the CaO tank is digested after entering the CaO digestion tank and then enters the size tank after being mixed with oxidant in the oxidant tank. The mass of the oxidant counts for 1%-5% of CaO. The oxidant is a mixture of NaOH and any one of Ca(ClO)2, NaClO2, KMnO4 and H2O2. The mixing ratio is equal to the mass ratio of 1:4-1:12. The mixed liquid enters the rotary atomization absorption tower from the size tank. The atomized liquid drops are completely mixed, contacted and reacted with the sintering fuel gas entering the rotary atomization absorption tower. The reacted fuel gas is discharged after entering the cloth bag dust remover.

The invention belongs to the environment protection field in metallurgical industry, and relates to a desulfurization and denitrification device and method for sintering flue gas. The sintering flue gas generated by a sintering machine is firstly treated through dust removal, the sintering flue gas obtained after dust removal enters a desulfurization reactor containing activated coke for desulfurization treatment, the desulfurized sintering flue gas passes through a denitrification reactor containing a low-temperature catalyst for denitrification, and finally the flue gas passes through an induced draft fan to be directly exhausted from a chimney. Accordingly, the activated coke can be used for regenerating activated coke and producing a sulfuric acid product through an activated coke desorption tower and a sulfuric acid preparation system after adsorbing SO2, and not only is it guaranteed that the activated coke can be reused, but also the sulfuric acid by-product is generated; a porous low-temperature denitrification catalyst is adopted as the low-temperature catalyst, and the service life is long. After the sintering fuel gas is treated through the desulfurization and denitrification technology, the contents of SO2, NOx, dust and the like in the fuel gas can all reach the discharge standard, therefore, the device can meet the discharge standard, the whole technological process is simple, the desulfurization and denitrification effect is good, and the great application value is achieved.

The invention discloses a preparation method of undaria pinnatifida rough polysaccharide, mainly comprising the following steps: a. drying and smashing pretreated undaria pinnatifida; b. taking a certain quantity of the undaria pinnatifida dry powder, and adding water fro extracting so as to obtain an undaria pinnatifida water extract; c. centrifuging, filtering and concentrating the extract; and d. adding ethanol into the concentrated solution, standing, filtering, and drying flocculent precipitate to obtain the undaria pinnatifida rough polysaccharide. The rough polysaccharide of the invention is dissolved with water to prepare feed liquid with different concentrations and is evenly sprayed on tobacco shreds according to 0.001-0.05 wt% of the tobacco shreds; sensing evaluation results show that after charged, cigarette smoke has no peculiar smell; the offensive taste and the pungency of the cigarette smoke are slightly lowered, after-sweet taste increases, quality of aroma is improved, aroma density is increased, and the smoking quality of the cigarette is improved, thus the invention has more practical production meanings and value and the application of the technology does not change the existing processing technic of the cigarette.

The invention discloses a cordyceps glossy ganoderma teabag and a making method thereof. The method comprises the following steps of: extracting glossy ganoderma sporophore and fomes japonica sporophore through hot water; mixing the hot water extraction liquid with cordyceps sporophore particles so that the cordyceps sporophore particles absorb the hot water extraction liquid containing the nutrient contents of glossy ganoderma and fomes japonica; and then, drying, uniformly stirring, portioning and bagging to prepare cordyceps glossy ganoderma teabags. The making method of the invention not only overcomes the defect that cordyceps glossy ganoderma teabags are hardly prepared because a common automatic teabag packaging machine cannot package crushed glossy ganoderma sporophore in flocculence is directly used in the prior art, but also solves the problem of glossy ganoderma quantifying difficulty in a teabag production process of the prior art and ensures that the active ingredients of the glossy ganoderma and the fomes japonica in the cordyceps glossy ganoderma teabag can be rapidly socked out. The cordyceps glossy ganoderma teabag is a teabag with higher health action.

The present invention relates to a compound extract of fomes yucafensis and betulin, its preparation method and preparation. Said preparation method includes the following steps: (1), respectively pulverizing fomes yucafensis and betulin; (2), mixing (by weight portion) 2-8 portions of fomes yucafensis powder and 3.5-11.5 portions of betulin powder; soaking the obtained mixturein water, heating to make water extraction, taking out supernatant fluid to obtain the supernatant fluid A; (3), adding water into the mixture extracted by step 2 and making water extraction, taking out supernatant fluid to obtain supernatant fluid B; (4), mixing the above-mentioned two supernatant fluids to obtain their mixed liquor, removing protein, lipid and impurity; and (5), concentrating and drying said mixed liquor so as to obtain the invented compound extract of fomes yucafensis and belutin.

The invention discloses a flue gas desulfurization and denitrification device and method of a coal fired boiler, and relates to desulfurization and denitrification treatment of tail gas of a three-waste mixed fired boiler in the coal-to-gas industry, such as synthesized ammonia and methyl alcohol. The device is arranged behind an electric precipitator of a three-waste mixed fired boiler, and mainly comprises a precooler, a desulfurizer, a circulation pump, a hydrogen peroxide storage tank, an absorption liquid supplementing pump, a dilute sulphuric acid storage tank and the like; sulfur dioxide and nitric oxide in the tail gas are removed by utilizing the circulation absorption of a hydrogen peroxide solution in the desulfurizer with flue gas, and the generated dilute sulphuric acid is stored and sold.

The invention discloses a sintering flue gas dedusting and denitration integrated process. The technical scheme includes that a sintering machine comprises four areas including a pre-drying section, an ignition section, a rich-oxygen sintering section and a tail section sequentially arranged along a moving direction of a trolley; sintering flue gas of the pre-drying section is collected by a corresponding lower air chamber, sent into a main low-temperature flue, guided out through a low-temperature flue gas pipe, a first low-temperature flue gas deduster, a low-temperature flue gas circulationfan and a main exhaust fan and sent into a sinter cooling furnace to realize heat exchange denitration with hot sinter, and sintering flue gas heated in heat exchange is subjected to dedusting through a second low-temperature flue gas deduster and heat recovery through a waste heat boiler, then sent into a desulfurization system for desulfurization and further purified prior to being exhausted; the side wall of the corresponding lower air chamber of the pre-drying section is peripherally provided with at least one layer of liquid ammonia nozzles, and excessive liquid ammonia or ammonium hydroxide is sprayed into sintering flue gas in the air chamber through the nozzles. The process is simple, low equipment investment and operating cost are realized, sintering flue gas is recycled based onquality, and online flue gas desulfurization and denitration can be realized.

The invention discloses a Bacillus methylotrophicus strain VJ4-1 of which the preservation number is CCTCC No:M 2012004. The invention provides a tobacco spine date seed extract prepared by using microbe Bacillus methylotrophicus and conducting biotransformation and an application of the spine date seed extract in tobacco. According to the invention, by fermenting the spine date seeds with the microbial strain, a natural flavor, i.e. the tobacco spine date seed extract can be produced; the method has the advantages of simple process, wide sources of main raw materials, and environmentally friendly and harmless production process, and has an industrial production prospect; the obtained natural flavor can be directly used for adding fragrance for cigarettes, is in harmony with the smoke, adds the sweet and fragrance of cream and fragrance of flower, makes the fragrance soft and comfortable, and improves the tasting, and can be mixed with other tobacco flavors.

The invention discloses a preparation method of a cocos nucifera essence for cigarettes. The preparation method comprises the following steps of: (1) opening a fresh cocos nucifera, and taking out coconut meat and coconut juice; (2) cleaning and mincing the coconut meat, adding 50 to 80 percent ethyl alcohol into the coconut meat, performing soaking for 10 to 20 days under the condition of backlight, extracting a soak solution, and performing concentration under the reduced pressure until alcohol is removed so as to obtain a concentrated solution, wherein the capacity of the ethyl alcohol is 4 to 8 times of the weight of the coconut meat; (3) adding alcohol into the coconut juice until the alcohol content reaches 30-50%, standing for 18 to 30 hours, and performing filtration through a filter membrane to obtain a filter solution for later use, wherein the pore size of the filter membrane is 0.5 to 1.2 microns; (4) mixing the concentrated solution obtained in the step (2) with the filter solution obtained in the step (3) in a volume ratio of 1:(4-8), and performing concentration under the reduced pressure to obtain the cocos nucifera essence. The prepared cocos nucifera essence is capable of enriching the cigarette flavor of the cigarettes, smoothening cigarette gas and improving the taste. Compared with an existing cocos nucifera essence, the cocos nucifera essence has the advantages that the fragrance is soft and smooth, and the cocos nucifera essence is tasty. The cocos nucifera is high in utilization rate, the essence is large in yield, the preparation method is simple, and the production cost is low.

The invention relates to a fermented rose extract for cigarettes and a preparation method thereof. The fermented rose extract for cigarettes is prepared by adding rose water extract into glucose to obtain a culture medium; preparing a culture solution from a culture of which the collection number is CCTCC No.M209272 and the collection name is saccharomyces cerevisiae HHL-1; and placing the culture medium into the culture solution for fermentation. The fermented rose extract for cigarettes has strong fragrance of rose and pleasant acid and sweet fragrance. When the fermented rose extract is added into cigarettes, the cigarettes offer rich tobacco fragrance, have enhanced sweet taste and have the effects of relieving irritation and softening smoke.

The invention discloses a tobacco flavor prepared from liquorice fermentation and application of the tobacco flavor. A dominant microorganism is separated from fresh tobacco leaves of flue-cured tobacco, and the classification name of the dominant microorganism is Lodderomyces elongisporus. CGMCC 6645; the Lodderomyces elongisporus is inoculated into a culture medium, taking liquorice as a raw material, for fermentation cultivation; a fermentation product after culture has a natural fragrance, and contains various aroma components, such as 2,4-resacetophenone, 2,4,5-methylphenol, 3,4-dimethyl benzyl alcohol and phenethyl alcohol. The tobacco flavor is added to tobacco shreds, and thus, the aroma and the moistening effect of a cigarette can be enhanced, and the cigarette quality is improved; the sweetness of smoke is rich, local offensive odor and wood odor are reduced, the throat comfort is enhanced, the remaining taste is comparatively comfortable, and the mouth astringency is strong; the whole production process for the tobacco flavor is simple and practical, and the tobacco flavor has a good application prospect.

The invention discloses a laminaria japonica polysaccharide, which is prepared by a method in the steps of: adding water into crushed laminaria japonica, adjusting the pH value to 1-4, conducting extraction for 2-5h at a temperature of 100-120DEG C; carrying out filtration so as to obtain an extracting solution, the pH value of which is adjusted to 6.3-7.0 by potassium-containing alkali, concentrating the extracting solution to a concentrated solution with solid content of 35-48%; adding ethanol into the concentrated solution and mixing them well, then leaving the solution to stand at a temperature of 4DEG C for 4-12h, and performing filtration so as to obtain a polysaccharide precipitate; implementing freeze drying, thus obtaining the laminaria japonica polysaccharide. The laminaria japonica polysaccharide, accounting for 0.01-1.0% of cut tobacco by mass, can be prepared into a solution. And the laminaria japonica polysaccharide solution can be added into cut tobacco or a filter tip through sprinkling so as to obviously enhance cigarette smoking quality, and reduce stimulation on a nasal cavity and throat. Accordingly, the laminaria japonica polysaccharide enables fine and smoothsmoke, soft mouthfeel, maintained aroma, and no side effect. The laminaria japonica polysaccharide provided in the invention has the advantages of no fishy smell, high extraction rate, easy acquisition, low cost and good oxidation resistance.

The invention belongs to the field of flue gas purification and relates to a novel flue gas desulfurization and denitrification process. The novel flue gas desulfurization and denitrification processincludes that flue gas is subjected to pre-dedusting, pre-oxidation, desulfurization and denitrification, after-dedusting and the like. By pre-dedusting, the content of suspended particles in flue gascan be reduced to facilitate subsequent desulfurization and denitrification; by pre-oxidation, NO in the flue gas can be removed while corresponding acids are generated, and the generated acids havereaction with alkali substances to prepare materials required by construction; in the step of desulfurization and denitrification, a novel efficient low-cost desulfurization and denitrification agentis adopted and comprises a mixture of coal gangue, magnesium oxide and sodium carbonate; by after-dedusting of the treated flue gas, dust of the desulfurization and denitrification agent is preventedfrom entering the atmosphere, secondary pollution is avoided, and unreacted desulfurization and denitrification agent can be recovered, so that cost reduction is realized. The novel flue gas desulfurization and denitrification process has advantages of simplicity in operation process, simplicity and convenience in process, low investment and operating cost and recyclability of side products. Therefore, the technical scheme of desulfurization and denitrification has high economic benefits and promising industrial application prospect.

The invention discloses a microbial preparation for tobacco, a preparation method and application thereof, and belongs to the technical field of tobacco additives. The present invention obtains corresponding microbial preparations after liquid fermentation and culture of production strains. The production strain is Bacillus pumilus.Van35, which was deposited in the General Microorganism Center of China Committee for the Collection of Microorganisms on November 5, 2009, with the preservation number CGMCC No.3411. The microbial preparation of the present invention can significantly improve the aroma and pleasantness of shredded tobacco, reduce miscellaneous gas and irritation, reduce smoke concentration and strength, and make the aftertaste more comfortable, thereby achieving the purpose of improving the smoking quality of shredded tobacco.

The invention discloses an integrated wet-type oxidation, desulfurization, denitration and recycling method for smoke, which comprises the following steps: introducing the smoke containing SO2 and NOx into acidic trivalent ferric solution or mixed solution of trivalent ferric and divalent ferric, absorbing NOx and SO2 under a condition with the temperature of 0-100 DEG C to generate dark brown nitroso ferrite (Fe<2+>), sulfate and a little amount of mixed solution composed of nitric acid and nitrous acid so as to realize desulfurization and denitration treatmentfor the smoke; adding oxidant into the desulfurization and denitration absorption solution to release nitrogen dioxide for dissolving in water, ammonia water, potassium hydroxide or sodium hydroxide solution to generate nitric acid, ammonium nitrate, potassium nitrate and sodium nitrate and so on, thereby recycling the resource.

The invention discloses a coke oven flue gas desulfurization technology and system and mainly aims to reduce temperature drop of flue gas in a desulfurization process so as to meet the hot standby requirement of a chimney. According to the coke oven flue gas desulfurization technology and system, a sodium-alkali solution is taken as a desulfurizing agent, the atomized sodium-alkali solution is subjected to a reaction with SO2 in flue gas, and sulfite is generated, dried with the flue gas and recovered by a dust collector; the recovered desulfurized dust is regenerated by the aid of a Ca(OH)2 solution, desulfurized gypsum and a sodium-alkali regenerated solution are obtained, and the sodium-alkali regenerated solution returns to a desulfurization system for circulating desulfurization. With the adoption of the coke oven flue gas desulfurization technology and system, investment and operation cost of coke oven flue gas desulfurization can be remarkably reduced, the outlet flue gas temperature of desulfurization equipment is increased, the hot standby requirement of the chimney can be met without reheating, and meanwhile, the problems of scaling, difficulty in sodium-alkali regeneration and the like of a wet double-alkali method are solved.

The invention discloses a pseudomonas aeruginosa and an application. The pseudomonas aeruginosa CP1 is collected by China Centre for Type Culture Collection, wherein the collection number is CCTCC NO: 2015197, and the collection date is April 6, 2015. The strain is used for a denitrification treatment for nitrogen-containing wastewater or used for an aerobic denitrification denitration treatment for NOx smoke or waste gas. In case of no impressed current, the optimal culture condition of the strain comprises a temperature of 30-40 DEG C and C / N of not less than 12. The strain is still capable of maintaining an efficient nitrate degradation process under an aerobic condition. However, the strain is capable of achieving a removal rate of 99.01% or above for nitrate nitrogen with an initial concentration of 250mg / L within 16 hours in the case that the C / N is reduced to 4-6 under the current simulation of 10mA, and hardly generates nitrate accumulation.

The invention discloses a microorganism preparation for tobaccos as well as a preparation method and application thereof, belonging to the technical field of tobacco additives. A production bacterial strain liquid is fermented and cultured to obtain the corresponding microorganism preparation. The production bacterial strain is bacillus pumilus.Van35, the bacterial strain is collected in the Center for General Microorganism of China Committee for Culture Collection of Microorganisms and the collection number is CGMCC No.3411. The microorganism preparation provided by the invention can obviously improve the qualities of stems, such as fragrance amount, joviality and the like; impure gas, irritation and the like are reduced; smoke concentration and strength are reduced and remaining taste becomes more comfortable so that the doping amount of the stems in a cigarette is further increased so that aims of reducing harm, decreasing coke content and reducing the production cost of the cigarette are achieved.

The invention discloses a solanum lycopersicum fermentation broth extract as well as a preparation method and application thereof. The extract is prepared by fermenting a raw material solanum lycopersicum with lodderomyces elongisporus and then extracting aroma components from fermentation broth. Lodderomyces elongisporus is collected in the China General Microbiological Culture Collection Center (CGMCC), with collection number of CGMCC No.6645 and collection date of October 08, 2012. The solanum lycopersicum fermentation broth extract contains various aroma components, such as phenethyl alcohol, furfural, 5-hydroxymethylfurfural, germacrone, cis-3-hexenol, megastigmatrienone and the like. Flavoring smoke panel test results show that the extract can harmonize with cigarette aromas and can obviously improve and regulate cigarette aromas, refine alcohols and smoke, reduce the irritation, hide offensive odors, improve the smoking flavors of cigarettes and produce fresh special aroma.

The invention discloses an Evernia furfuracea fermented extract and a preparation method and application thereof. The Evernia furfuracea fermented extract is prepared from Evernia furfuracea, which serves as a raw material, through fermenting with Lodderomyces elongisporus and extracting aroma components from a fermented solution. The Lodderomyces elongisporus is collected in the China General Microbiological Culture Collection Center (CGMCC); the collection number is CGMCC No. 6645; the collection date is October 08, 2012. The product contains a variety of aroma substances, such as phenethyl alcohol, orcinol monomethyl ether, Alan phenol, beta-orcinol methyl ester, methyl haematommate, ethyl haematommate, ethyl everninate, methyl divaicate and the like. Shown by results of flavored smoking assessment tests, the product can be harmonized with cigarette flavors, can obviously promote the cigarette flavors, make smoke gas delicate and mellow, lower irritation, conceal impurity gases and improve the smoking flavor of cigarettes, and can generate a fresh and special aroma.

The invention relates to a wet-type redox desulfurizing and recycling method for smoke, which comprises the following steps: introducing the smoke containing SO2 into acidic trivalent ferric absorption solution, absorbing SO2 at the temperature of 0-100 DEG C to generate sulfate solution, thereby realizing the purpose of desulfurizing the smoke at last; after dissolving SO2 into water, oxidizing by trivalent ferric to generate ferrous sulfate aqueous solution; oxidizing the ferrous sulfate aqueous solution by introducing oxygen so as to convert divalent ferric into trivalent ferric to reuse for absorbing SO2 in the smoke; performing separation, purification and crystallization in time since the concentration of sulfate radical in the smoke desulfurizing absorption solution is obviously increased after circulations for many times, so as to obtain ferric sulfate or ferric chloride to recycle the resource.

The invention discloses an Armeniaca vulgaris fermented extract and a preparation method and application thereof. The Armeniaca vulgaris fermented extract is prepared from Armeniaca vulgaris, which serves as a raw material, through fermenting with Lodderomyces elongisporus and extracting aroma components from a fermented solution. The Lodderomyces elongisporus is collected in the China General Microbiological Culture Collection Center (CGMCC); the collection number is CGMCC No. 6645; the collection date is October 08, 2012. The Armeniaca vulgaris fermented extract contains a variety of aroma substances, such as phenylethyl alcohol, capronaldehyde, benzaldehyde, ethyl acetate, 1-butanol and the like. Shown by results of flavored smoking assessment tests, the product can be harmonized with cigarette flavors, can obviously promote the cigarette flavors, make smoke gas delicate and mellow, lower irritation, conceal impurity gases and improve the smoking flavor of cigarettes, and can generate a fresh and special aroma.

The invention discloses a zinc oxide desulfurization process. The zinc oxide desulfurization process comprises the following steps: absorption, wherein strong alkali and weak acid salt or a strong alkali aqueous solution acts as absorption liquid and contacts with sulfur-contained flue gas in an absorption column reversely, sulfur dioxide in flue gas is absorbed, and the absorption process is the reaction of strong alkali and weak acid salt or strong alkali in the absorption liquid and sulfur dioxide, so that an aqueous solution of a medium is generated; reaction, wherein the aqueous solution of the medium enters a reactor outside the absorption column and reacts with zinc oxide, so that strong alkali and weak acid brine and zinc sulfite precipitate, or sulfite, water and zinc sulfite precipitate are generated again; filtration, wherein the products are filtered, the filter residue is zinc sulfite precipitate, and the filtrate is an aqueous solution of strong alkali and weak acid salt or weak acid salt; filtrate circulation, wherein the filtrate acts as an absorption liquid and is conveyed to the absorption column for the next circulation.

The invention discloses an aureobasidium pullulans OF-01 strain (CGMCC No.7609) (China General Microbiological Culture Collection Center Number 7609), a method for preparing a tobacco endogenous derived spice by using the strain, and an application of the strain in a tobacco additive. A tobacco leaf fragment is used as a raw material, the aureobasidium pullulans OF-01 strain is used for fermentation, a plurality of products, such as extracellular polysaccharides (pullulan), enzymes, antibiotics, single-cell protein, volatile aroma components and the like, are generated, and the fermented tobacco leaf fragment is extracted and condensed to prepare the tobacco endogenous derived spice, therefore, the application of the spice and flavor products which are not derived from the tobacco in cigarette is reduced to achieve the re-utilization of the tobacco leaf fragment. The analysis on the aroma components proves that the spice comprises a plurality of types of tobacco aroma components and other derived aroma components. The result of a flavoring smoke panel test proves that the spice can be used for obviously increasing cigarette flavor, causing the smoke pure and mild, reducing the irritation, covering the offensive odor, and improving the cigarette smell. The spice has the characteristics of low cost, rich aroma components, safety to people and livestock and the like, therefore, the spice can be used in the production of the cigarette.

The invention discloses a Bacillus methylotrophicus strain VJ4-1 of which the preservation number is CCTCC No:M 2012004. The invention provides a tobacco angelica sinensis extract prepared by using microbe Bacillus methylotrophicus and conducting biotransformation and an application of the angelica sinensis extract in tobacco. According to the invention, by applying the fermented and purified tobacco angelica sinensis extract in cigarettes, the extract is in harmony with the smoke, increases the sweet aroma and the sweetness after taste, reduces the irritancy, reduces miscellaneous gases, strengthens the penetrability, makes the smoke soft and smooth, reduces the drying degree, make the aftertaste good, and improves the tasting; the method has the advantages of simple process, mild reaction conditions, low pollution, high concentration of the products, simple extraction steps, clean production, environmentally friendly product, safety and reliability, wide sources of main raw materials, extremely low cost, and nature, and has an industrial production prospect.