TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Method: New cellulose fuel ethanol and its production, where the technique key is reproducibly processing and utilizing woods industry and agricultural cellulose waste: by-product woods industry, branches of woods, cane shrub, leftover material, sawdust woos shavings, crop straw, hull, corn core, city solid waste, factory cellulose and semi-cellulose leftovers, preferably utilizing integrated coupling new method to process, ferment, distil and dehydrate the cellulose raw material so as to realize technique innovation and reduce producing cost, where production comprises: (a) combining biological pre-processing with steam blasting, using steam for heating raw material to 120-290?oC (0.3-7.8 MPa), the reaction time is 2 seconds-12 minutes, then decreasing the pressure to atmospheric pressure, immediately decreasing it into normal temperature and normal pressure, using special micro-organism as Merulirs meruliuslacrymans, Trametes versicolor and endo-pectate lyase for biodegrading lignin; (b) using integrated method to purify hydrolytic liquid before fermenting, where, fiber raw material generates several by-products after hydrolyzing, which can baffle the growth and formation of microorganism, these by-products are harmful substance for the fermentation of ethanol; these substances are changing along with the change of the acuity degree of hydrolysis reaction condition and the types of raw material; the inhibitor in the hydrolytic liquid mainly is: furfural, methylol uronic, acetic acid, formic acid, acetoacetic acid, hydroxybenzene component and aldehyde component and so on, it is very important to reduce these poisonous components for the fermentation of ethanol, adopting single method usually cannot illuminate these harmful substances effectively; using the integration of several methods can effectively illuminate the harmful substances in hydrolytic liquid; in order to improve the yield of ethanol, applying simple effectively and economic and practical method to the purification of hydrolytic liquid of fiber material: such as first using calcium oxide (CaO) to adjust the pH from 0.2-7.0, and then using phosphoric acid (H3PO4) to adjust the pH to 3-4, and then using oxygen activating machine, negative iron grain and active carbon of 2-7% to neutralized adsorb; (c) complement adopting composite innovation techniques method in ethanol fermenting techniques; basing on biologic reaction process and product diversity, form of fermenting separating and coupling and referring separating technology are the same, in traditional fermenting process, normally it only produces 8-10% ethanol; when ethanol concentration arrives 5%, yeast will stop to grow; when ethanol concentration increase to 12% from 6%, production ratio of ethanol reduce to zero, so, adopting fermenting and permeating vapor-air lift coupling innovation technology can solve the problems, and it also can let fermenting process of cellulose fuel ethanol achieve stabilization serialization, fermenting and permeating vapor-air lift coupling innovation technology adopted, where, permeating vapor process uses membrane has different solution and diffuse performance for component in liquid mixture; under vapor partial pressure difference of two side components of membrane, evaporating part liquid mixture; using coupling technology of permeating vapor and fermenting, ethanol and water can be removed in fermenting solution, while nutritive base material still stay in fermenting solution; membrane selecting penetrate ethanol to obtain high concentration ethanol; permeating vapor film used for separating water and ethanol is divided to permeable water film and permeable ethanol film; ethanol is extracted from fermenting solution in vapor form by carrying air in air lift fermenting process, then through attaching, condensation to remove ethanol; ethanol produced by fermenting is taken out by carrying air; product of fermenting solution can keep lower level, reduce even remove depression of ethanol to yeast cell so as to increase yeast cell active, improve fermenting production ratio; in air lift fermenting process, it uses carbon dioxide (CO2) to carry air; CO2 resource of industrial ethanol enterprise is rich so it can largely reduce cost of carrying air; (d) distilling the cellulose fuel ethanol by a two-tower equipment through a distilling flow to directly producing 93-98% (volume fraction) content fuel ethanol, where, during the distillation process of cellulose fuel ethanol, each tower is divided into stripper section (tower of Fermented Glutinous Maize) and distillation section (distillation tower), the two towers are filled fermented glutinous resources simultaneously and will produce product at the same time; operation pressure of the high pressure tower is about 4\asterisk10^5 Pa, while operation pressure of the low-pressure tower is normal pressure; the boosting tower is heated directly through steam, and top stem of the tower is used as heat source of the normal pressure tower; and energy consumption of the flow is 1.0-1.9 kg/l; (e) applying composite integrated method during dehydration of the cellulose fuel ethanol, namely coupling effect; and applying polyvinyl alcohol/polyacrylonitrile composite film in link of film separation of ethanol and aqueous solution, where, pervaporation flow for separating alcohol and water in industry can discretionarily be selected from continuous mode and batch-type, no matter whether it is regardless of whether, it is composed of material liquid hating system, film member separating system and condensing vacuum system; the material liquid enters the die component after exchanging heat with leakage surplus liquid from the die component and being heated by a heater, and the water has priority to enter lower reaches side of the film after permeating the pervaporation film when flowing through the film surface; as the permeating component absorbs heat energy from the material liquid, temperature of the material liquid is caused to reduce; in order to ensure of no over-reduction of permeating flux of the component, the material liquid will pass through the middle heater to increase temperature of the material liquid after flowing through certain area film and then enters into next unit film component; the process is carried out constantly until moisture content in the material liquid meets pre-determined requirement; then, the leakage surplus liquid is product absolute ethyl alcohol; in order to make full use of heat energy of the system, the leakage surplus liquid generally exchanges heat with the fed material; the permeating material steam at lower reaches of the film flows through the condenser under effect of a vacuum pump, and the liquid permeating material flows to the next working procedure after gas-liquid separation; further, little permeating material steam not condensed and not condensing gas are drawn out through the vacuum pump; and (f) applying composite integration method in the process dehydrating the cellulose fuel with alcohol, coupling effect of general rectifying with pervasion and vaporization; it is operated through a composite integration method of membrane separation with pervasion and vaporization, could realize the aim of directly producing anhydrous alcohol from low-concentration industrial ethanol or fermentation liquid; the method has a comparatively high separation coefficient when the water content of the material liquid is relatively low, while the separation coefficient of the general rectifying method is very low, being one at the constant boiling point; when the water content of the material liquid is relatively high, for example higher than 80%, then the separation coefficient of the rectifying method is relative high; for the separation system having a water content less than 10%, when the water content of the pervasion remaining liquid is required to be 10 to the negative fourth order of magnitude, it has an obvious predominance with adopting the composite integration method 1 of membrane separation with pervasion and vaporization; when the water content of the material liquid is relatively high, it is not economic to preparing anhydrous alcohol directly from the fermentation liquid having a water content reaching 90%, by adopting special rectifying operations such as simple pervasion and vaporization method or constant boiling rectifying, extraction rectifying etc, while it is best to choose the general rectifying and pervasion and vaporization method, which could sufficiently play the predominance of the general rectifying under a high-concentration water condition and the separation predominance of the pervasion and vaporization process under a low-concentration water condition; because the ethanol content in the fermented liquid is low and contains the other contents, so the condensed ethanol-water solution is separated from the fermented liquid by means of the primary fractionation tower and acts as the material of the rectifying tower; the constant ethanol-water boiling liquid in top of the rectifying tower penetrates in the penetration evaporation film assembly; the pure ethanol with water content less than 2000 mg/l can be obtained from the rest penetration liquid; and the penetration liquid can return the rectifying tower again; the integrated process has the different advantages of the normal rectifying and the penetration evaporation, and further has many advantages comparing with the special rectifying processes, such as (1) the additional chemistry additive (the extraction agent or constant boiling agent) does not need in the producing process, so the operation expenditure can be decreased greatly; for example, if the benzene is used as constant boiling agent, a factory for preparing the pure ethanol by means of the