327results about How to "Technically feasible" patented technology

The invention discloses a steel trussed beam and flexible arch construction method with vault pushing, which comprises the following steps of: building an assembly support in the side span of a steel trussed beam, assembling a guide beam and the steel trussed beam into an integral space on the assembly support, arranging a horizontal continuous jack and a mechanical, electrical and hydraulic control system on the assembly support, pushing the steel trussed beam forward by using the horizontal jack, and continuing next round of assembly work on the rear assembly support whenever one round is pushed forward. By using the steel trussed beam and flexible arch construction method with vault pushing provided by the invention, the steel trussed beam and the flexible arch are erected outside the operating limit of a highway, and the construction difficult across the highway is solved.

The invention discloses a preparation method of apple black tea. The method comprises a primary processing working procedure and a refining working procedure. The primary processing working procedure comprises the following steps: picking fresh leaves, withering, twisting, fermenting, putting in a red pot, and drying, wherein original apple juice is added in the twisting working procedure and the fermenting working procedure, so that twisted leaves and fermented leaves absorb oxidase and nutritional substances of apples, the oxidation speed of substances such as polyphenol and the like during the black tea fermenting process is accelerated, and the nutritional ingredients are increased, so that the processed black tea provided by the invention not only has special apple flavor, is brilliant red in juice color, but also the nutrition value of black tea is increased. The refining working procedure comprises the following steps: screening, winnowing, selecting stems, re-firing and enhancing the fragrance and dividing into piles evenly. The produced black tea not only has the appearance characteristic of common black tea, but also has the unique flavor integrating apples and black tea, is tender and straight in appearance, is uniform and neat, is black bloom in color, is fragrant in flavor, is brilliant red in juice color, has golden rings, is obvious in apple flavor, is mellow in taste and is sweet after taste, is fresh in tea residue, and is bronze.

The invention discloses a desulfurization and denitrification afterheat power generation systematization device of glass melter flue gas. The desulfurization and denitrification afterheat power generation systematization device comprises the process that: a. a fourth flashboard (14) is arranged in an afterheat boiler (15), a high-temperature section (6) and a low-temperature section (5) are formed, a bypass flue (9) of a chimney (7) is connected with the high-temperature section (6), and an exhaust pipeline of the low-temperature section (5) is connected with the chimney (7); b. the high-temperature section (6) is provided with a bypass pipeline and connected with a dry desulfurization reactor (3), a high-temperature electric dust remover (2) and a denitrification reactor (1), and c. the denitrification reactor is connected with the low-temperature section (5) through the pipeline. The desulfurization and denitrification afterheat power generation systematization device has the beneficial effects that: high-temperature flue gas firstly passes through the high-temperature section of the afterheat boiler, and the temperature of the flue gas is reduced, so that electrode material of an ESP (electrostatic precipitator) does not need to adapt to over-high temperature, and the requirements of an SCR (selective catalytic reductor) denitrification system on the temperature can be met. The flue gas enters the low-temperature section of the afterheat boiler again after being desulfurized and dedusted, so that the afterheat of the flue gas is fully and effectively recovered.

The invention provides a method for deeply processing waste water from paper making by oxidative degradation, flocculation precipitation and sand leaching, which is characterized by low investment, simple process, high pollutant removal rate and low operation cost. After the waste water is processed by the method, the COD is less than 70mg / L, the BOD5 is less than 20mg / L, and SS is less than 30mg / L.

The invention relates to a refining process for lepidolite in tantalum-niobium ore waste rocks. A combined method with magnetic separation, high gradient magnetic separation, dense medium separation and flotation is adopted. The flotation adopts the process of rough flotation, dual fine flotations and sweeping. The process for refining the lepidolite from the granite-type tantalum-niobium ore waste rocks is provided. The tantalum-niobium ore waste rocks are crushed, screened, ground and subjected to high-frequency screening, spiral grading, permanent magnet magnetic separation for iron removal, high gradient magnetic separation, dense medium separation and flotation, so that lepidolite concentrates are obtained. By means of the method, the lepidolite concentrates are separated from the tantalum-niobium ore waste rocks. The lepidolite concentrates contain at least 4.5% of Li2O, at least 8.0% of K2O and Na2O and at most 0.10% of TiO2 and Fe2O3, the recovery rate of the lepidolite concentrates is larger than 80%, the qualities of the lepidolite concentrates meet the requirement of national standards, and the recovery rate of the lepidolite concentrates exceeds the industry level.

The invention relates to a method for building a tailings dam, in particular to a method for building a tailings dam through adoption of mine dumping. The method comprises the following steps that: a mine dumping yard and a tailings dam of a concentrating mill are combined; the mine dumping is adopted for directly building the tailings dam; a layered damming method or a strip damming method is implemented; after the tailings dam is formed, the inner side of the tailings dam is a tailings warehouse; and the outer side is a dumping yard. As mine dumping technology and damming technology of the tailings dam of the concentrating mill are combined, the method can greatly reduce the area occupation of the dumping yard, enlarge the utilization coefficient of the tailings warehouse and overcome the disadvantages of the prior damming construction method of the tailings warehouse and the difficult problems of sand lifting of tailings sand and the like; and meanwhile, after a mine stops production, under the condition that the mine dumping cannot be used for building the tailings dam, the concentrating mill can also utilize waste stone of the dumping yard to continue building the tailings dam. The process is suitable for the tailings warehouses of a valley type, mountain-surrounding type, flat type, cut-off river type and other types, is also suitable for building the tailings dam of the concentrating mill of other industries, is also suitable for newly building the tailings dam of the concentrating mill and is also suitable for building the tailings dam of the concentrating mill in course of production.

The invention discloses a natural protected area system integration and boundary demarcation method. The method comprises the following steps: (1) determining a protected area integration and mergingprinciple; (2) for a region to be integrated and merged, constructing an ecological suitability, cultivated land suitability and construction suitability evaluation index system, and performing indexstandardization processing and weight assignment; calculating a suitability comprehensive index of each type of land, constructing a conflict pattern spot suitability land type discrimination matrix for qualitative evaluation, and drawing a suitability land type spatial layout map; (3) selecting evaluation reference elements for protected area boundary optimization; (4) evaluating resource background characteristics and carrying out primary aggregation optimization; (5) extracting an existing element and resource base aggregation result according to the protected area heritage resource characteristics to carry out intersection optimization; and (6) linking and coordinating the result with a construction management condition, and delimiting a new protected area boundary. According to the method, the problem of conflict patches of the natural reserve can be solved, and a scientific, reasonable, clear and definite natural reserve boundary is formed.

The invention discloses a method for maintaining the thermal stability of a permafrost foundation, which adopts solar adsorption refrigeration technology comprising the following steps: a, determining the thickness of a seasonal active layer of the permafrost foundation; b, burying a high-thermal conductivity material; c, burying and installing the solar adsorption refrigeration device; and d, exchanging heat in the foundation into the air with the solar adsorption refrigeration device so as to reduce the temperature of the permafrost foundation and maintain the thermal steady state. The invention also discloses the solar adsorption refrigeration device for use in combination the method, which comprises a solar thermal collector and a foundation evaporator, wherein the foundation evaporator is buried underground; and the upper end of the foundation evaporator is connected with absorption and desorption gas ducts which are connected through each pipeline and are connected with the solar thermal collector respectively. The method of the invention effectively relieves the influences of global warming on the permafrost foundation. The device of the invention is strong in practicability, simple in structure and conveniently buried, and can solve the problem that a thermal rod cannot work in warm seasons.

The invention provides a multilevel series LTD driving source and a synchronous trigger method of the multilevel series LTD driving source. An external trigger pulse is introduced into each of front n level modules of an LTD pulse source, synchronous trigger of other branch switches of n level modules is achieved by means of a branch circuit and an angular orientation transmission line in each module, meanwhile, a trigger pulse is introduced from each trigger branch circuit high voltage terminal of the n level modules, the trigger pulses are sequentially introduced into trigger pulse input ends of follow-up series modules at corresponding positions to trigger switches of trigger branch circuits in the follow-up modules, the remaining series modules are carried out according to the previous steps, and all the series modules of an LTD are synchronously triggered. The requirement of the multilevel series LTD pulse source for a trigger system and a trigger timing sequence can be obviously simplified, and module trigger reliability is improved.

The invention relates to a method for preparing light ceramisite by means of electroplating sludge. The method comprises the following steps that 1, raw materials are supplied by weight; 2, the electroplating sludge is ground to 150-200 meshes in a wet mode, municipal sludge, decomposed rock, sludge and clay or kaolin are ground to 100-150 meshes in a dry mode, anthracite is ground to 100-150 meshes in a drying mode, and ferric oxide or hematite is ground to 100-150 meshes in a dry mode; 3, all the raw materials are mixed evenly; 4, the mixed materials are deep refined and then extruded into raw ceramisite through a granulating machine; 5, the raw ceramisite is preheated and calcined into light ceramisite through a double-barrel rotary kiln, and after discharging and cooling are performed, the finished light ceramisite is obtained. According to the method, the electroplating sludge is effectively utilized, toxin removing is thorough, the reliability is achieved, the technology is simple, the sludge consumption is large, heavy metal pollutants can be simultaneously treated, the production cost is low, and the prepared ceramisite can be reused in construction industry.

The invention discloses a distribution power automation terminal with an equipment state monitoring function and a monitoring method. A measurement and control module is respectively connected with an analog quantity acquiring module, a switch quantity acquiring module, a switch control loop and a switch energy storage loop, and controls the switch control loop and the switch energy storage loop according to received analog quantity and switch quantity; and an equipment state diagnosis module is respectively connected with a switching characteristic monitoring module, a power state monitoring module, an insulating characteristic monitoring module, an equipment vibration and sound monitoring module, an equipment temperature monitoring module and an environment temperature and humidity monitoring module, and diagnoses and assesses states of equipment according to monitored variable quantity. On-line assessment, fault analysis, diagnosis and advance warning on health conditions of running of main equipment of a power distribution network are implemented, and an embodiment which is feasible in technology and low in cost is provided for condition-based maintenance of the main equipment of the power distribution network.

The invention discloses a hydrodechlorination method of trichloro ethylene. By taking transitional metal phosphide as a catalyst, the method comprises the following steps: preparing the transitional metal phosphide by using a temperature-programmed reduction method; by taking the transitional metal phosphide as the catalyst, filling the middle part of a quartz tube reactor; bringing trichloro ethylene by means of H2 to a catalyst bed of the quartz tube reactor for hydrodechlorination reaction through a bubbling method, wherein the reaction air speed based on volume of H2 is 600-48000 / h, the temperature is 300-650 DEG C and the reaction time is 0.5-10h; and collecting HCl generated by reaction, and calculating the conversion ratio of trichloro ethylene. By taking the transitional metal phosphide as the catalyst, the method provided by the invention is technically feasible, free from pollution, low in cost and remarkable in effect of degrading trichloro ethylene, and has good economical and environmental benefits.

The invention discloses a comprehensive control method for the town water pollution in the three gorges reservoir area, comprising a method for controlling a series of pollutants such as the town industrial and domestic pollution sources discharged out of the small-town area and the city area, the urban non-point source pollution caused by the rainfall runoff generation and the like, so that the comprehensive control method has the characteristics of being feasible in technology, reasonable in economical efficiency, remarkable in combined effect and the like, and the defect that the existing pollutant control method is single in implementation mode, free from technology support, and free from pertinence can be overcome. By respectively setting a water pollution control method for the small-town area of the three gorges reservoir area and the residential district, the dense population business district and the industrial park of the city region, the comprehensive control method for the town water pollution in the three gorges reservoir area is integrated, so that the powerful technology support can be provided for realizing the total water quality target requirement and the pollution abatement work in the three gorges reservoir area of China, and the example can be provided for the town water pollution control of various hydraulic and hydro-power engineering reservoir areas in the western China.

The invention discloses a method of cutting chisel for the foundation ditch of a broken station, the adopted technology program of which includes the perforation of blast hole, the blasting and the deslagging technology after the blasting. The main feature is adopting a pre-hole to control blasting, medium-length hole blasting and slope deslagging technology. Due to adopting the pre-hole to control blasting and slope deslagging technology, the invention has the advantages of realizing one-time blast, feasible technology, being safe and reliable, economic rationality, and being suitable for the construction of the foundation ditches of open-air mine broken stations and similar foundation ditches in other fields. In the construction of foundation ditch, the efficiency can be improved by 50%, the construction time of foundation ditch can be reduced by 3 to 5 months. The invention is also suitable for cutting chisel for some similar foundation ditches in other engineering fields. Meantime the invention is suitable for cutting chisel not only for vertical elevation foundation ditch, but also for slope foundation ditch.

The invention discloses a zero emission treatment system and process for landfill leachate concentrated liquor. The system comprises pre-treatment system, an adjusting pond, an anaerobic system, an MBR system, a nanofiltration membrane system and an advanced oxidation desalting conjugated system for treating landfill leachate concentrated liquor; the pre-treatment system, the adjusting pond, the anaerobic system, the MBR system and the nanofiltration membrane system are successively connected to a landfill leachate treatment sub system for treating the landfill leachate; the concentrated liquor emission hole of the nanofiltration membrane system is connected to the advanced oxidation desalting conjugated system, and the landfill leachate concentrated liquor generated by the nanofiltrationmembrane system enters the advanced oxidation desalting conjugated system for oxidizing desalting treatment; the advanced oxidation desalting conjugated system comprises an advance oxidizing reactionpond, a pH adjusting pond, the desalting reaction pond and a precipitation pond successively connected through a pipeline; a water outlet is formed in the upper part of the precipitation tank; the water outlet is connected to the adjusting pond through a pipeline; and the supernate of the precipitation tank reflows to the adjusting pond to be mixed with the landfill leachate for follow-up treatment, so that zero emission of the landfill leachate concentrated liquor is achieved.

The invention relates to an anti-tumor multi-medicine resistant targeted liposome and a preparation method thereof, in particular to an anti-tumor multi-medicine resistant long circulating targeted liposome. The invention is characterized in that: quercitin and an anti-tumor medicine are jointly coated in the liposome, and simultaneously target tumor tissues to reverse the multi-medicine resistance of tumors, cytotoxicity of anti-tumor medicines on medicine resistant tumors is enhanced, the change of pharmacokinetic properties of the anti-tumor medicines in vivo and the enhancement of toxic and side effects of the anti-tumor medicines in vivo, which are caused by the difference and interaction of the pharmacokinetic properties of different medicines in vivo, are avoided, and the treatmenteffect on medicine resistant tumors is improved.

The invention discloses a method and system for cooperatively treating sludge through grate furnace waste incineration, and belongs to the field of sludge treatment. Steam generated by grate furnace waste incineration is firstly utilized for carrying out indirect heat exchange drying on the sludge, and then the sludge dried to a certain degree and in-furnace waste are mixed and incinerated in a grate furnace according to a certain proportion. According to the method and system, the existing and mature grate furnace waste incineration technology is utilized for achieving effective drying and cooperative incineration on the sludge, the sludge independent drying cost and the building and operating cost of an incineration treatment project can be greatly reduced, and harmlessness, reduction and recycling of sludge treatment are achieved.

The invention relates to the field of deep chemical milling of titanium-alloy large-scale cylindrical parts, in particular to a deep chemical milling method of TA12 and TA15 titanium-alloy large-scale structural components. The deep chemical milling method comprises the following technological lines: degreasing, washing, pickling, washing, coating with a protecting adhesive, marking, removing a protecting adhesive film on a to-be-milled surface, chemically milling and conducting vibrating finishing. The method comprises the following steps: a titanium-alloy cylindrical part is processed into a thin-walled grid rib by adopting a deep chemical milling technology, and the thin-walled grid rib is primarily marked and chemically milled to obtain a chemical milling machine case shell with all mounting bases. The manufacturing of integral, thin-walled and grid-shaped titanium-alloy large-scale cylindrical structural components is completed by adopting the titanium-alloy deep chemical milling technology, and the requirement that the large-scale cylindrical parts are chemically milled to form the grid-shaped structure is met; and deformation, caused by machining, is avoided fundamentally, the problem of low strength caused by welding is solved, the overall rigidity of the component is improved, and besides, the production cycle is shortened, and the structural weight is reduced.

The invention provides a technology and device for recovering ammonia from garbage leachate in a domestic garbage sanitary landfill site. The method comprises the following steps: (1) removal of ammonia in garbage leachate: adding alkaline chemicals into the leachate to regulate the pH value of the garbage leachate to 9-11, and removing ammonia in the garbage leachate in an ammonia removal tower by using an air stripping method; (2) ammonia recovery: recovering ammonia sulfate from gas containing ammonia by using a sulfuric acid solution absorption method, wherein the absorption is realized by two absorption reactors: in the first absorption reactor, 85-95% of gas containing ammonia is processed, and the concentration of ammonia sulfate in the circulating mother liquor in the first absorption reactor is lower than the saturation concentration of ammonia sulfate, thereby preventing ammonia sulfate from crystallizing; and the unsaturated circulating mother liquor in the first absorption reactor is sent into a second absorption reactor to continuously react with 5-15% of gas containing ammonia, so that the concentration of ammonia sulfate in the circulating mother liquor in the second absorption reactor is higher than the saturation concentration of ammonia sulfate, thereby promoting the ammonia sulfate to crystallize; and (3) separating ammonia sulfate crystals.

The invention discloses a method for improving over-wet cohesive soil by using a curing agent. The plasticity index of the over-wet cohesive soil is more than 10; the used curing agent is carbide slag; and the used carbide slag is 4 to 8 percent of the mass of the over-wet cohesive soil. The method for improving the over-wet cohesive soil can effectively improve the over-wet cohesive soil, and has the advantages of low cost and good effect.

The invention relates to an environmental protection recycling method of deserted brominated flame retardant plastics. The method comprises the following step: pyrolyzing deserted flame retardant plastics and industrial waste residue calcium carbide together to distribute bromine in solid residues for further recycling and inhibit the generation of brominated tetrachloro dibenzo-p-dioxin / furan (PBDD / F). By adopting the invention, the problem of the common pyrolytic process that bromine in the three-phase product is not easy to recycle, the purification processing cost is high and PBDD / F is generated is solved and the win-win situation for resources and environment can be realized.

The invention discloses an integrated processing process for waste water generated during coproduction of epoxypropane and methyl tertiary butyl ether. The process comprises the following steps: (1) anaerobic treatment: carrying out anaerobic treatment on waste water by using series connection of two stages of UASB anaerobic reactors in combination with zero-valent iron; (2) aerobic treatment: carrying out aerobic treatment on anaerobic effluent by adopting an activated sludge process; (3) oxidation treatment: carrying out advanced treatment on aerobic effluent by adopting a Fenton oxidizing process. The processing process integrates the advantages of two stages of UASB anaerobic technology, zero-valent iron technology, conventional activated sludge process and Fenton oxidizing technology, and can reach the removal rate of 98.33% for COD in production waste water; concentrations of SO4(2) and S(2) are reduced by the combination of the primary anaerobic reactor and zero-valent iron technology, thus shielding the influence of sulfate from the second stage of reactor, and reducing processing difficulty; refractory organic matters in waste water are further removed by Fenton oxidization, so that the effluent reaches discharge requirement, the processing cost is low, the effect is good, and resistance to impact load is strong.

The invention discloses an outdoor tall gastrodia tuber cultivating method in northern area. The method comprises the technical processes of land selection and pit opening, wood preparation, preparation of two bacteria and one seed, sowing, cultivation management, harvesting and the like, and in particular an antifreezing cultivation management technique and a two-bacteria and one-seed once sowing technique; the outdoor tall gastrodia tuber cultivating method is feasible and unique. An apricot tree land is taken as a planting base, the trimmed branches and leaves of the apricot trees are taken as a planting material for the tall gastrodia tubers, tall gastrodia tuber pits are formed in the open spaces in the apricot tree land, and therefore, intercropping of Chinese medicinal herb and forest and stereo planting are realized; as a result, the outdoor tall gastrodia tuber cultivating method has important practical significance for returning farmland to forests and increasing the income of farmers in the northern area. Besides, according to the tall gastrodia tuber cultivating method, the wood utilization rate is high, the tall gastrodia tubers are high in quality and relatively high in various nutrition ingredients, and the medicinal effect of the tall gastrodia tubers can be comparable with that of wild tall gastrodia tubers.

The present invention relates to a production method of ivory colour handicraft wooden folding fan, and said production method includes the following steps: folding fan moulding and structure design, its contour dimension and structure size are basically identical to that of traditional sandalwood folding fan; preparing fan edge and fan core by adopting punched porous flower form, using organic combination of computer aided design and screen printing technique to design decorative pattern of the fan; selecting material, utilizing stone-stain wood plate to prepare fan blank, drilling assembling holes; bleaching and drying fan blank, preparing bleaching, solution, said bleaching solution contains hydrogen peroxide, sodium hydroxide solution and alcohol, bleaching, cleaning drying, position, forming, assembling fan, screen printing, perfuming and waxing so as to obtain the invented product.

The invention provides a numerical simulation method of the migration, accumulation and float removal processes of water surface floats. The method is characterized by comprising the following steps: (1) simulation of a float migration process: based on the stress conditions of each float in a float set F in a water moving process, generalizing each float into an entity with center of mass, and obtaining the change processes of six attributes of each float entity; (2) simulation of a float accumulation process: combining the floats with the same discrete grid number Q<ij> into a new float, obtaining the mass, moving speed and center-of-mass coordinates of the new float again, and bringing the new float into the float set; and (3) simulation of a float removal process: removing the floats according to a float removal plan. The method can quickly and accurately simulate the migration rule of the floats in water so as to improve the comprehensive management efficiency of the seawater floats.

The invention relates to a method for preparing a Eu3+ labelled molecule imprinted sensor used for pesticide residue detection and belongs to the technical field of environment functional material preparation. The method comprises the steps that Eu3+ and amino groups and pesticide residue molecules in APTS are pre-organized and then subjected to hydrolytic crosslinking condensation with TEOS so that the Eu3+ labelled pesticide residue molecule imprinted silicon dioxide nanoparticle sensor can be obtained, pesticide residue molecule selective recognition site holes are obtained after pesticide residue molecules are eluted, chelation between pesticide residue molecules and Eu3+ on a recognition site is conducted after the pesticide residue molecules enter the recognition site of the sensor again, the fluorescence intensity of the pesticide residue molecules is improved after being chelated with Eu3+, and then high-selectivity, high-binding-capacity and high-sensitivity detection of the trace pesticide residue molecules is achieved by means of the change of the fluorescence intensity. The obtained Eu3+ labelled molecule imprinted sensor has the advantages that the rigidity of the recognition site is high, Eu3+ is not prone to elution, repeated utilization can be achieved, solvent inertness, light stability and single dispersity are high, and size is uniform.

The invention provides a method for treating coking biochemical effluent by microwave-oxidation-coagulation technology, which comprises the following steps of: A, adding a mixed reagent consisting of H2O2 and Fe2+ into the coking biochemical effluent until the mass concentration of hydrogen peroxide in water is between 0.01 and 1 percent, and controlling the pH to between 2.0 to 6.0; B, delivering the mixed liquid into an industrial microwave oven for processing for 5 to 60s; C, regulating the pH value of the mixed liquid to between 6.0 and 6.5 or 7.5 and 8.5, and carrying out oxidation treatment for 1 to 4 hours under an aeration condition that the aeration rate is 10 to 40m<3> / h; D, adding a coagulant into the liquid until the mass concentration of the coagulant in the liquid is betweenone millionth and one hundred thousandth; E, precipitating and separating; F, filtrating the liquid to obtain process effluent for recycling; and G, collecting sludge, separating the liquid from the sludge; and returning the liquid to the step D, and filter-pressing the sludge to obtain sludge cakes. The method realizes recycling, does not discharge sewage, and effectively solves the problem thatpresent coking sewage is difficult to treat and to recycle.

The invention provides a device for improving jetting uniformity of nozzles. The device comprises an oxidizing agent nozzle and a fuel nozzle which are connected with each other and constitute a two-component jetting unit, wherein an oxidizing agent nozzle inlet throttling hole is embedded in an inlet of the oxidizing agent nozzle, and an outlet of the oxidizing agent nozzle is formed in the fuel nozzle; multiple rows of radial inlet holes are radially formed in the fuel nozzle, multiple rows of small holes are further axially formed in the fuel nozzle, and an annular cavity is formed in the lower end of the fuel nozzle; during working, an oxidizing agent enters the oxidizing agent nozzle inlet throttling hole via the inlet of the oxidizing agent nozzle, fuel enters the radial inlet holes of the fuel nozzle, is subjected to primary flow equalization, is subjected to secondary flow equalization by the aid of the annular cavity and is sprayed out via an outlet of the fuel nozzle finally, and uniform distribution along the circumferential height can be obtained. With the adoption of the device, the jetting uniformity of the fuel is improved, mixing and burning effects of the fuel and the oxidizing agent are enhanced, and then the burning efficiency of a thrust chamber is improved.

The present invention is absorption-rectification-rectification process for recovering propylene, propane and butyl aldehyde from the discharged gas from oxo process. The absorption-rectification-rectification process includes the absorption with absorbent of C6-C12 hydrocarbon and C4-C10 alcohol from the reversely contact gas inside an absorbing tower at the operation conditions of 20-65 deg.c and 1.0-1.8 MPa; the rectification of the absorbed liquid in a rectification tower to separate propylene and propane from the absorbent and obtain C3 mixture in the tower top at the operation conditions of 0.5-2.5 MPa pressure, 5-40 deg.c top temperature and 120-190 deg.c bottom temperature; and the rectification of C3 mixture in a rectification tower to obtain propylene and propane product at the operation conditions of 0.4-2.5 MPa and 0-40 deg.c tower top temperature. The process has CO eliminating rate of 98 %, aldehyde eliminating rate of 99 % and inert gas eliminating rate over 95 %.

The invention belongs to the technical field of optical communication networks, and particularly relates to a device for generating and receiving optical OFDM-MSK signals. The device comprises a transmitting device and a receiving device, wherein the transmitting device comprises a continuous wave laser, a data signal source, an MSK encoder, a signal demultiplexing mapping device, a signal inverse Fourier transformer, a parallel-to-serial conversion device, a digital-analog conversion device and a single-electrode electro-optical modulator; and the receiving device comprises the main components of a photoelectric detection diode, a digital-analog conversion device, a parallel-to-serial conversion device, a signal Fourier transformer, signal de-mapping multiplexing device, an MSK decoder, a data receiver and the like. The device is simple in structure, stable in performance and low in price. The device can be used for improving the performance of optical OFDM signals in a direct modulation-detection optical OFDM communication system and a coherence modulation-detection optical OFDM communication system, and simplifying the processing of demodulation signals in a receiving machine.