Printing and hot-air-drying device for producing outer package labels

The utility model discloses a printing and hot air drying device for producing outer package labels. Relating to the technical field of hot air drying, including a housing, the top end of the shell isfixedly connected with an air heater, a gas drying device and a gas filtering device. A conveying belt is arranged at the bottom end of the inner side of the shell. The conveying belt penetrates through the shell, a second limiting plate is fixedly connected to the outer side, close to the inlet end of the conveying belt, of the shell. A first limiting plate is fixedly connected to the inner side, close to the outlet end of the conveying belt, of the shell, arc-shaped bent corners are arranged at the ends, away from the shell, of the first limiting plate and the second limiting plate, a movable door is arranged on one side of the shell, and a handle is fixedly connected to the bottom end of the movable door. According to the printing hot air drying device for producing the outer package label ...

Gas-liquid separator

The invention discloses a gas-liquid separator. The gas-liquid separator is of a cylindrical tank structure and comprises a cylinder, an upper gland and a lower gland, the upper gland is provided with a gas discharge pipe, the lower gland is provided with a water drain device and a gas feed pipe, n-level cyclone gas-liquid separation devices and m-level gas cyclone gathering and distributing devices are arranged in the cylinder, the cyclone gas-liquid separation devices are used for discharging gas in the cylinder towards the periphery of the inner wall of the cylinder in a cyclone mode, the n-level cyclone gas-liquid separation devices are sequentially arranged at intervals from bottom to top, and the m-level gas cyclone gathering and distributing devices are distributed between the n-level cyclone gas-liquid separation devices, wherein n is an integer greater than or equal to 2, and m is an integer greater than or equal to 2. The gas-liquid separator has the advantages that no auxiliary ...

Catalyst for preparing 2-cyanopyridine by catalyzing ammoxidation reaction and application of catalyst

The invention belongs to the technical field of catalytic synthesis, and particularly relates to a catalyst for preparing 2-cyanopyridine by catalyzing ammoxidation reaction and application of the catalyst. Mesoporous carbon is selected as a carrier, tin dioxide and antimony trioxide in a specific proportion are loaded, and the ammoxidation reaction catalyst with high catalytic activity is obtained. The tin-antimony mesoporous carbon catalyst has the advantages of high specific surface area and porosity, high catalytic activity and efficiency, recyclability for multiple times, long service life, simple preparation process and reduced cost, and excellent catalytic performance can be maintained only by two active metal raw materials. According to the method, the mesoporous carbon is prepared from the waste straw, the method is green and environmentally friendly, and the mesoporous carbon is high in porosity and high in adsorption capacity on active metal. When the tin-antimony mesoporous ...

Process for improving bulk density of spiramycin

The invention provides a production process for improving the bulk density of spiramycin. The process includes: under 30 to 100 DEG C, a spiramycin wet product acquired through crystallizing spiramycin water solution is placed in a closed container and forms a yellow block by being placed below 15 DEG C for an appropriate time period and changing the temperature in the process of spiramycin crystallization; the color turns to similar white after being placed for 0.5 to 3 hours under 20 to 35 DEG C; then the block is crushed into particles and goes through a 40-80 mesh sieve and the particles above 40 mesh undergo secondary rolling, granulation and sieving; the particles below 80 mesh are placed below 15 DEG C again and re-form the yellow block for repeated use; finally, the raw materials from 40 to 80 mesh are collected and dried below 80 DEG C for 3 to 6 hours until the water content meets the standard; the dried material is the spiramycin consistent with the bulk density requirement.

OPTIMIZATION FLOWS OF A SOURCE, A MASK, AND A PROJECTION OPTIC DEVICE CAPABLE OF INDUCING A LARGE PROCESS WINDOW

PURPOSE: The optimization flows of a source, a mask, and a projection optic device are provided to improve a lithographic projection apparatus by minimizing a cost function suitable for design variables. CONSTITUTION: A design layout is obtained(402). A sub set of patterns is selected from one part of the design layout. An initial illumination source is selected. The sub set and illumination source of the patterns are simultaneously optimized. The properties of projection optic devices are optimized by using the optimized illumination source. COPYRIGHT KIPO 2012 ...

Novel device capable of realizing transportation and carrying comprehensive operation on mountain land slope

The invention relates to a novel device capable of realizing transportation and carrying comprehensive operation on a mountain land slope. The novel device capable of realizing transportation and carrying comprehensive operation on the mountain land slope comprises a mechanical portion feature and an electrical portion feature, wherein the mechanical portion feature consists of several parts of a frame, a gear-rack driving mechanism, a transmission mechanism consisting of sprocket-chain and worm-gear reducers, a walking part, a rollover and upward jumping preventing device, a mechanical brake mechanism and a track connecting structure, and a gear-rack engagement driving mode is adopted. The electrical portion feature consists of several parts of a direct-current brushless motor, a driving controller portion thereof, an electrical control portion and a power transmission and electricity getting device. A safer and simpler slide wire and collector structure is adopted for power transmission ...

Flux-cored wire used for submerged arc surfacing repair of furnace bed roll

The invention discloses a flux-cored wire used for submerged arc surfacing repair of a furnace bed roll, relating to the welding material technology. An external steel strip of the flux-cored wire is a 00Cr17 ferric stainless steel strip, and the flux of the flux-cored wire comprises the following components in percent by weight: 30-40 percent of metal chromium, 30-40 percent of metal nickel, 5-10 percent of metal manganese, 2-5 percent of high-carbon ferrochrome, 0.5-3 percent of rare earth ferrosilicon, 5-10 percent of fluoride, 2-5 percent of aluminium magnesium alloy, 1-1.5 percent of graphite, less than 1 percent of ferrotitanium and the balance of iron powder. By adopting the flux-cored wire disclosed by the invention, the continuous operation of the submerged arc surfacing repair of the furnace bed roll can be realized, and the technical difficulty of high hot crack sensitivity of a pure austenite weld joint is solved. The flux-cored wire disclosed by the invention has an excellent ...

Methods for defect validation

A method of defect validation for a device manufacturing process, the method including: obtaining a first image of a pattern processed into an area on a substrate using the device manufacturing process under a first condition; obtaining a metrology image from the area; aligning the metrology image and the first image; and determining from the first image and the metrology image whether the area contains a defect, based on one or more classification criteria.

Method for monitoring flow rate of radioactive gas exhaust flow of nuclear power plant

The invention discloses a method for monitoring the flow rate of radioactive gas exhaust flow of a nuclear power plant, which comprises the following steps: utilizing a pressure gauge in an EUF (containment filtration and exhaust) system to measure the pressure value p1 before a restricted orifice, acquiring the mass flow rate of the exhaust flow before the restricted orifice from a pipeline design file of the EUF system according to the obtained pressure value p1 before the restricted orifice, and further utilizing a formula shown in the specification to calculate the volume flow rate of the radioactive gas exhaust flow, wherein in the formula, p2 is the absolute pressure of the gas at a monitoring point; T2 is the absolute temperature of the gas at the monitoring point; and RMix is the mixed gas constant of the gas exhaust flow at the monitoring point. Compared with the prior art, pressure data measured by the pressure gauge in the EUF system and pipeline design data of the EUF system ...

Optimization flows of source, mask and projection optics

Device and method for frequency conversion control of stone cutting motor

The invention discloses a method for frequency conversion control of a stone cutting motor. The method includes the steps: (1) a controller extracts current and voltage information of the cutting spindle motor in real time; (2) the controller calculates real-time active power of the spindle motor according to real-time current and voltage of the spindle motor and compares the active power with a nominal voltage of the spindle motor to process correspondingly, and the controller outputs signals to control operating states of the spindle motor or control a feeding motor to increase feed quantity. Using the control method enables stone cutting operations to be more intelligent and more energy saving. The invention further discloses a device for frequency conversion control of the stone cutting motor, and the device comprises a portal frame, the spindle motor, a saw blade, a power source, a controller, the feeding motor, a spindle motor detection device, a strong-current frequency conversion ...

Nixie tube panel and key control circuit and control method thereof

The invention discloses a nixie tube panel and key control circuit and a control method thereof. The nixie tube panel and key control circuit comprises a 74CH138 chip, a 74HC164 chip, a current-limiting resistor, a five-bit common-cathode nixie tube, a function indication LED, functional touch keys and a data communication port, wherein the 74HC164 chip is connected with the current-limiting resistor, the 74HC138 chip is connected with the five-bit common-cathode nixie tube, the public end of the function indication LED and the functional touch keys, and the current-limiting resistor is connected with the segment code of the five-bit common-cathode nixie tube and the function indication LED; the control circuit is featured with more reasonable pin resource distribution and more compact module component position. By means of the control method, the key press and display scanning can be performed without delay, and the CPU use ratio is higher.

Novel acetonitrile catalyst and preparation method thereof

The invention relates to the technical field of chemical engineering, in particular to IPC C07C255, and more specifically relates to a novel acetonitrile catalyst and a preparation method thereof. The preparation method comprises the following steps: adding zirconium nitrate and sodium tungstate into deionized water to prepare a zirconium nitrate aqueous solution and a sodium tungstate aqueous solution respectively, then adding nano-scale porous carbon, stirring, standing, drying, and carrying out two-stage calcination to prepare the zirconium-tungsten bimetallic porous carbon catalyst. The prepared catalyst can keep high activity and selectivity for a long time, and can be revived and used for multiple times, so that the service life is prolonged.

Method for synthesizing high purity acetonitrile by ammoniating acetic acid

The invention discloses a method for synthesizing high purity acetonitrile by ammoniating acetic acid; acetic acid and liquid ammonia are respectively vaporized, acetic acid is preheated to 100-250 DEG C, liquid ammonia is preheated to 100-300 DEG C, the preheated two gases enter a reactor for mixing, ammoniation reaction is carried out under the action of an acetic acid ammoniation catalyst to obtain acetonitrile. The invention has available materials, simple technology, easy operation and high purity of the product.

High-purity apixaban and preparation method thereof

The invention provides high-purity apixaban and a preparation method thereof, and relates to the technical field of raw material medicine synthesis. The method specifically comprises the following steps: by taking a compound 1 and a compound 2 as raw materials, carrying out amine ester exchange reaction on the compound 1 and the compound 2 in a reaction solvent by using a phase catalyst under a heterogeneous condition to prepare an apixaban crude product; and purifying and crystallizing the crude product, thereby obtaining the apixaban product which is easy to prepare and high in product purity. The raw materials are simple in formula and small in dosage, and the whole preparation method is simple in process, easy to operate, low in requirements for equipment and energy consumption and especially suitable for large-scale industrial production. The purity of the prepared apixaban product is 99.94% or above, the yield is 98% or above, and the method has the beneficial effects of high yield ...

Preparation method of high-purity fudosteine

The invention provides a preparation method of a novel antitussive phlegm-eliminating drug high-purity fudosteine, wherein the preparation method includes the steps: (1) synthesizing an intermediate 3-bromo-1-propanol; (2) carrying out a reaction of cysteine hydrochloride with 3-bromo-1-propanol to obtain a crude product; and (3) carrying out crystallization refining on the obtained crude product to obtain the high-purity fudosteine. The domestic cheap easily-available raw materials of cysteine hydrochloride, hydrobromic acid and 1,3-propylene glycol materials are utilized, monitoring of a gas chromatograph, a liquid chromatograph and a refractometer is used for tracking a catalytic reaction process and a reaction terminal point. The preparation method has the advantages of less reaction steps, high selectivity, low pollution, low cost and stable quality, and is suitable for industrialized production.

Method for removing acetone in industrial acetonitrile

The invention relates to the field of chemical engineering, in particular to the field of IPC C07C, and more particularly relates to a method for removing acetone in industrial acetonitrile. The method for removing acetone in industrial acetonitrile comprises the following steps: S1, uniformly mixing a carbon material and an ethanol water solution, dropwise adding a solution I, heating and stirring, and continuously heating to recover a solvent, so as to obtain a residual material; and calcining the residual material at high temperature to obtain the composite material. And S2, mounting the composite material body prepared in the step S1 into an adsorption tower, setting temperature and pressure, introducing industrial acetonitrile into the adsorption tower by using a pump at a certain flow rate in the direction opposite to the gravity direction, adsorbing acetone, and collecting acetonitrile at a liquid outlet at the top of the tower. The method utilizes the synergistic adsorption effect ...

Supercritical extraction process of 2-cyanopyridine

The invention provides a supercritical extraction process of 2-cyanopyridine. The specific process steps comprise ammoxidation of 2-methylpyridine, supercritical extraction and separation and purification. The extraction process provided by the invention can effectively solve the problems of general separation efficiency, poor product quality, low yield and the like in the current mainstream 2-cyanopyridine preparation process. According to the extraction process, sulfuric acid is not used, so that the production process is more environment-friendly; the hydrolysis of the 2-cyanopyridine is inhibited, the product yield is improved, and the yield of the 2-cyanopyridine reaches 88%; only a very small amount of solvent substances are remained in the supercritical extraction extract, so that the product quality is higher; the supercritical extraction achieves the purpose of extraction by changing pressure and temperature, the process is simple, and the extraction speed is high.

Optimization flows of source, mask and projection optics

Embodiments of the present invention provide methods for optimizing a lithographic projection apparatus including optimizing projection optics therein. The current embodiments include several flows including optimizing a source, a mask, and the projection optics and various sequential and iterative optimization steps combining any of the projection optics, mask and source. The projection optics is sometimes broadly referred to as “lens”, and therefore the optimization process may be termed source mask lens optimization (SMLO). SMLO may be desirable over existing source mask optimization process (SMO) or other optimization processes that do not include projection optics optimization, partially because including the projection optics in the optimization may lead to a larger process window by introducing a plurality of adjustable characteristics of the projection optics. The projection optics may be used to shape wavefront in the lithographic projection apparatus, enabling aberration control of the overall imaging process.

Purification method for preparing acetonitrile by using acetic acid ammoniation method and application of purification method

The invention provides a purification method for preparing acetonitrile by an acetic acid ammoniation method, which comprises the following steps: heating acetonitrile, introducing the heated acetonitrile into an adsorption tower filled with a porous composite adsorption material in the form of gaseous acetonitrile for adsorption, and ensuring that the average particle size of the porous composite adsorption material is 0.5-2mm. According to the purification method for preparing acetonitrile through the acetic acid ammoniation method, the technological process is effectively simplified, compared with traditional multi-stage rectification water removal, the purification method has a high energy-saving effect, no third component is introduced, and the product quality is high.

Methods for defect validation

Hydraulic cold drawn pipe machine

The invention discloses a hydraulic cold tube drawing bench, which comprises a main cylinder seat, a drawing die seat, a clamping dolly which is arranged between the main cylinder seat and the drawing die seat and is driven by a main cylinder, a core rod seat used for penetrating a positioning core rod, and an end which is fixedly connected with the main cylinder seat, the drawing die seat and the core rod seat sequentially on two independent section lathe beds; the main cylinder seat, the lathe bed, the drawing die seat, the lathe bed and the core rod seat are axially arranged. The inventionis characterized in that: the lower parts of the main cylinder seat, the core rod seat and the lathe beds are all provided with lateral displacement limit devices containing concave positioning grooves; the concave positioning groove consists of a bottom plate and two side baffles or consists of L-shaped pieces formed by a bottom plate and side baffles and arranged symmetrically along the longitudinal ...

Preparation process of lavo-ofloxacin and ofloxacin

The invention relates to a preparation process of lavo-ofloxacin and ofloxacin which are anti-infectious medicaments, belonging to the synthetic process with tetrafluorobenzoic aid as raw material. The preparation method is characterized in that (2, 3, 4, 5-phenyl tetrafluoride formyl) ethyl acetate and DMFA react for 1.0-1.5h in toluene at 50-55 DEG C with the existence of acylating catalyst; the reaction product is washed by water, and an aqueous layer is separated; at 30-35 DEG C, L-amino propanol is dripped in an oil layer to carry out replacement reaction for 1.5-2.0h; toluene is decompressed, recovered and dried proper quantity of DMF is added to the oil layer for diluting; the diluted oil layer is dripped into back-flow DMF with the existence of anhydrous potassium fluoride to carry out back-flow reaction for 6h; DMF is recovered, water is added for centrifugation, acid is added to the obtained solid to be hydrolyzed to prepare lavo-perfluorocarboxylic acid, the lavo-perfluorocarboxylic ...

Steam and heat conducting oil dual-purpose vacuum drier

The invention discloses a steam and heat conducting oil dual-purpose vacuum drier which comprises a tank body, wherein the tank body comprises an inner container and an outer container; an interlayer is formed between the inner container and the outer container; the tank body comprises a middle cylinder and a first seal head and a second seal head which are arranged at the end part of the cylinder; a pipeline joint communicated with the interlayer is arranged on the first seal head; and the interlayer forms five heat transfer areas by arranging a first annular baffle plate, a second annular baffle plate, a third annular baffle plate, a first guide plate, a second guide plate, a helical guide ring, an opening type annular baffle plate and a backflow pipeline assembly. The invention has theadvantages of more even heating of the vacuum drier, thorough heat absorption of the inner container and higher heat utilization ratio and energy saving.

Method for preparing hydrochloric acid clindamycinum

The invention aims to provide a preparation method for clindamycin hydrochloride, which is obtained through four steps of reactions of halogenation, hydrolysis, salt formation and crystal transformation. The preparation method of the invention is charaterized by simple production conditions, lower production cost, higher production yield, and environmental friendliness and cleanliness and is suitable for industrialized production.

OPTIMIZATION FLOWS OF SOURCE, MASK AND PROJECTION OPTICS

Embodiments of the present invention provide methods for optimizing a lithographic projection apparatus including optimizing projection optics therein. The current embodiments include several flows including optimizing a source, a mask, and the projection optics and various sequential and iterative optimization steps combining any of the projection optics, mask and source. The projection optics is sometimes broadly referred to as “lens”, and therefore the optimization process may be termed source mask lens optimization (SMLO). SMLO may be desirable over existing source mask optimization process (SMO) or other optimization processes that do not include projection optics optimization, partially because including the projection optics in the optimization may lead to a larger process window by introducing a plurality of adjustable characteristics of the projection optics. The projection optics may be used to shape wavefront in the lithographic projection apparatus, enabling aberration control of the overall imaging process. 1. A computer-implemented method for improving a lithographic process for imaging a portion of a design layout onto a substrate using a lithographic projection apparatus comprising an illumination source and projection optics , the method comprising:selecting a subset of patterns from the portion of the design layout and selecting an initial illumination source;simultaneously optimizing the subset of patterns and the illumination source; andoptimizing characteristics of the projection optics by using the optimized illumination source.2. The method of claim 1 , wherein the simultaneously optimizing the subset of patterns and the illumination source is performed by selectively repeating the steps of:defining a first multi-variable cost function of a first plurality of design variables that are characteristics of the lithographic process, at least some of the first plurality of design variables being characteristics of the illumination source and of the ...

Ship piping task package type closed loop construction method and system

The invention provides a ship piping system task package type closed-loop construction method and system. The method comprises the following steps of building and determining a piping system model, grouping and decomposing piping system trays, issuing drawings, assembling piping system tray task packages, installing and feeding back the piping system trays, checking the data integrity of the piping system trays and completing delivery. The system comprises a tray data checking and calculating module, a tray data two-stage decomposing and encoding module and a support, valve and piping list matching and installation drawing generating module. The pipe fitting-out efficiency in ship construction can be greatly improved, and the construction period is shortened. According to the invention, a data link of the whole process of design, manufacturing, loading, lightering, centralized distribution and installation of the pipe is established, and the complete installation and delivery of the pipe ...

Technique for synthesizing niacinamide and co-producing niacin by hydrolyzing 3-cyanopyridine

The invention discloses a technique for synthesizing niacinamide and co-producing niacin by hydrolyzing 3-cyanopyridine, comprising the steps of producing niacinamide, producing niacin and the like. The invention has simple technological operation process and little equipment investment and is a niacin and niacinamide co-producing technique, the conversion ratio of 3-cyanopyridine is 100%, the recovery of niacinamide is 90%, and the total recovery of niacin is 99.8%.

Circuit discharging detecting system

A circuit discharge detection system comprises a detection device which can simultaneously observe circuit discharge spark and an entity image of a circuit to be detected and can exactly judge a discharge part and a discharge device of a circuit system to be detected by observation. According to the technical scheme provided by the invention, the circuit discharge detection system comprises an ultraviolet radiation imaging system, a visible light imaging system and an image fusion system, and is characterized in that the ultraviolet radiation imaging system and the visible light imaging system are used for simultaneously performing imaging observation on the circuit to be detected; the ultraviolet radiation imaging system captures ultraviolet radiation emitted by spark, generates and outputs a discharge spark image; the visible light imaging system captures and outputs the entity image of the circuit to be detected; and the detected discharge spark image and the entity image of the circuit ...

Novel low-energy-consumption and low-emission acetonitrile purification method

The invention relates to the field of chemical engineering, in particular to the field of IPC C07C, and more particularly relates to a novel acetonitrile purification method with low energy consumption and low emission. The low-temperature separation method is adopted, azeotropic distillation is avoided, azeotropy of acetonitrile and water is reduced, water is effectively removed, a third-party reagent does not need to be introduced, the system is simple, pollution cannot be caused to subsequent separation, and in addition, the purification method is low in energy consumption, easy to operate and convenient to produce.

Preparation method of near-infrared reflective pigment

The invention belongs to the technical field of pigment preparation, and particularly relates to a preparation method of a near-infrared reflective pigment. Wherein the near-infrared reflective pigment is a titanium dioxide-antimony oxide-pigment red 254 composite pigment, and the preparation method comprises the following steps: (1) melting to prepare the composite pigment; (2) preparing composite sol; (3) ball milling; and (4) performing hydrothermal reaction to obtain a finished product. The obtained product has stable color, good acid and alkali resistance and high near infrared spectrum reflectivity.

Hydraulic cold drawn pipe machine

The invention discloses a hydraulic cold tube drawing bench, which comprises a main cylinder seat, a drawing die seat, a clamping dolly which is arranged between the main cylinder seat and the drawing die seat and is driven by a main cylinder, a core rod seat used for penetrating a positioning core rod, and an end which is fixedly connected with the main cylinder seat, the drawing die seat and the core rod seat sequentially on two independent section lathe beds; the main cylinder seat, the lathe bed, the drawing die seat, the lathe bed and the core rod seat are axially arranged. The invention is characterized in that: the lower parts of the main cylinder seat, the core rod seat and the lathe beds are all provided with lateral displacement limit devices containing concave positioning grooves; the concave positioning groove consists of a bottom plate and two side baffles or consists of L-shaped pieces formed by a bottom plate and side baffles and arranged symmetrically along the longitudinal ...

Optimization flows of source, mask and projection optics

Embodiments of the present invention provide methods for optimizing a lithographic projection apparatus including optimizing projection optics therein. The current embodiments include several flows including optimizing a source, a mask, and the projection optics and various sequential and iterative optimization steps combining any of the projection optics, mask and source. The projection optics is sometimes broadly referred to as “lens”, and therefore the optimization process may be termed source mask lens optimization (SMLO). SMLO may be desirable over existing source mask optimization process (SMO) or other optimization processes that do not include projection optics optimization, partially because including the projection optics in the optimization may lead to a larger process window by introducing a plurality of adjustable characteristics of the projection optics. The projection optics may be used to shape wavefront in the lithographic projection apparatus, enabling aberration control ...

Hanging of small -size handling machine weighs alarm device

The utility model discloses a hanging of small -size handling machine weighs alarm device is connected force sensor with the lug, be used for measuring the handling machine load that hangs to transfer the singlechip with the data that record, three pressure sensor evenly installs the back base department at handling machine, is used for measuring the weight of handling tail portion institute ballast thing, then will record data and transfer the singlechip, and it is big or small that the singlechip calculates the load that the handling machine can allow according to the relation of power and the arm of force again. The upper surface department at the platform of handling machine is installed to the motor, and singlechip and motor installation are used for the operation of control motor together. When the operator lifted by crane the heavy object, when singlechip relatively after the moment that data are corresponding of two sensors, if lift by crane the load control within safe working ...

Safety interlocking device for quick opening pressure vessel

The invention discloses a safety interlocking device for a quick opening pressure vessel, which comprises a mechanical actuating mechanism. The device is characterized in that the mechanical actuating mechanism comprises two baffles arranged on a quick opening engagement volution and a start and stop lever for controlling the opening or closing of a safety exhaust valve; the two baffles are a first baffle and a second baffle respectively; the first baffle and the second baffle form a start and stop lever channel; a shaft pin is arranged above the start and stop lever channel, and is axially flicked or picked up under the driving of an electromagnet; a travel switch is arranged below the start and stop lever; a normally open contact of the travel switch is connected with an intermediate relay of an intake electromagnetic valve circuit; and a normally closed contact of the travel switch is connected with an intermediate relay of a quick opening motor control circuit. The device has the advantages ...

Steam and heat conducting oil dual-purpose vacuum drier

The invention discloses a steam and heat conducting oil dual-purpose vacuum drier which comprises a tank body, wherein the tank body comprises an inner container and an outer container; an interlayer is formed between the inner container and the outer container; the tank body comprises a middle cylinder and a first seal head and a second seal head which are arranged at the end part of the cylinder; a pipeline joint communicated with the interlayer is arranged on the first seal head; and the interlayer forms five heat transfer areas by arranging a first annular baffle plate, a second annular baffle plate, a third annular baffle plate, a first guide plate, a second guide plate, a helical guide ring, an opening type annular baffle plate and a backflow pipeline assembly. The invention has the advantages of more even heating of the vacuum drier, thorough heat absorption of the inner container and higher heat utilization ratio and energy saving.

High temperature abrasive particle wear-out detecting device and method

Synthesis method of 2-cyanopyridine

The invention discloses a synthesis method of 2-cyanopyridine, which is characterized in that 2-methylpyridine is vaporized and mixed with ammonia and air; the 2-methylpyridine reacts with the ammonia and air in the presence of a catalyst, and then the finished product of 2-cyanopyridine is obtained after absorption, extraction and rectification. The method features simple process and easy operation; the conversion rate of the 2-methylpyridine is more than 97% and the yield of the 2-cyanopyridine is more than 85%.

Large -scale hydraulic braking system for machinery

The utility model discloses a large -scale hydraulic braking system for machinery, including synchronous return circuit, braking main part, volume adjustable hydraulic pump, overflow valve, filter, wherein synchronous return circuit comprises two tribit cross electro -hydraulic reversing valves, two governing valves, two pneumatic cylinders, hydraulically controlled check valve and travel switch, and the braking main part comprises four clutch blockss and brake disc, four clutch blockss adopt embedded fixing in the braking main part, the piston rod A of pneumatic cylinder epicoele connects the braking main part, and the design has the air duct to help the heat dissipation of braking part on the brake disc, and two pneumatic cylinder bottoms all are equipped with travel switch. This braking system is rational in infrastructure, and small, easy operation, the installation and dismantling be convenient for are particularly suitable for some large -scale mechanical equipment, high -speed slewing ...

Synthesis method of 3-cyanopyridine

The invention discloses a synthesis method of 3-cyanopyridine, which is characterized in that 3-methylpyridine is vaporized and mixed with ammonia and air; the 3-methylpyridine reacts with the ammonia and air in the presence of a catalyst, and then the finished product of 3-cyanopyridine is obtained after absorption, extraction and rectification. The method features simple process and easy operation; the conversion rate of the 3-methylpyridine is more than 99% and the yield of the 3-cyanopyridine is more than 95%.

Method for synthesizing acetonitrile by ethanol ammoniation method

The invention discloses a method for synthesizing acetonitrile by ethanol ammoniation method. Raw materials of ethanol and ammonia are respectively vaporized and pre-heated to 100-200 DEG C, the two raw material gases are mixed for reaction to obtain acetonitrile, the reaction adopts ethanol ammoniation catalyst with silicon dioxide as a carrier, and the reaction mol ratio of the two raw materials is ethanol: ammonia=1:0.8-1.2. The invention features available raw materials, small ammonia ratio, simple technique, easy operation and high product purity.

Synthesis method of 2-chromium picolinate

The invention discloses a synthesis method of 2-chromium picolinate, which is implemented by hydrolyzing 2-cyanopyridine to obtain sodium salt solution of 2-chromium picolinate, adding chromium trichloride for complexation to obtain 2-chromium picolinate product. Compared with traditional method for synthesizing 2-chromium picolinate with 2-methylpyridine as raw material, the invention is simple in synthesis route, sate and reliable in process procedure, strong in maneuverability, high in reaction yield and good in product quality.

Process for improving bulk density of spiramycin

The invention provides a production process for improving the bulk density of spiramycin. The process includes: under 30 to 100 DEG C, a spiramycin wet product acquired through crystallizing spiramycin water solution is placed in a closed container and forms a yellow block by being placed below 15 DEG C for an appropriate time period and changing the temperature in the process of spiramycin crystallization; the color turns to similar white after being placed for 0.5 to 3 hours under 20 to 35 DEG C; then the block is crushed into particles and goes through a 40-80 mesh sieve and the particles above 40 mesh undergo secondary rolling, granulation and sieving; the particles below 80 mesh are placed below 15 DEG C again and re-form the yellow block for repeated use; finally, the raw materials from 40 to 80 mesh are collected and dried below 80 DEG C for 3 to 6 hours until the water content meets the standard; the dried material is the spiramycin consistent with the bulk density requirement.

Safety brake device acting on traction sheave of tractor

The invention discloses a safety brake device acting on a traction sheave of a tractor, which belongs to the technical field of safety devices of elevators. The tractor comprises a transparent cover and a traction sheave of the tractor, which is characterized in that: the safety brake device comprises a fixed bracket, a brake mechanism, a start reset mechanism and a detecting mechanism, wherein the brake mechanism is arranged on the transparent cover of the tractor and is extended in the traction sheave and is provided with a sliding slot; the brake mechanism is used for braking and releasing the traction sheave and comprises a tension spring, a fraction plate, a brake scotch and a brake scotch seat; the start reset mechanism is used for driving the brake mechanism to brake and release the traction sheave and comprises a steel wire, a cylindrical pin, a swinging rod, a guide rod and an elastic component; and the detecting mechanism is used for detecting whether the swinging rod acts and ...

Method for preparing high-content troxerutin drug

Method for preparing hydrochloric acid clindamycinum

The invention aims to provide a preparation method for clindamycin hydrochloride, which is obtained through four steps of reactions of halogenation, hydrolysis, salt formation and crystal transformation. The preparation method of the invention is charaterized by simple production conditions, lower production cost, higher production yield, and environmental friendliness and cleanliness and is suitable for industrialized production.

Safety interlocking device for quick opening pressure vessel

The invention discloses a safety interlocking device for a quick opening pressure vessel, which comprises a mechanical actuating mechanism. The device is characterized in that the mechanical actuating mechanism comprises two baffles arranged on a quick opening engagement volution and a start and stop lever for controlling the opening or closing of a safety exhaust valve; the two baffles are a first baffle and a second baffle respectively; the first baffle and the second baffle form a start and stop lever channel; a shaft pin is arranged above the start and stop lever channel, and is axially flicked or picked up under the driving of an electromagnet; a travel switch is arranged below the start and stop lever; a normally open contact of the travel switch is connected with an intermediate relay of an intake electromagnetic valve circuit; and a normally closed contact of the travel switch is connected with an intermediate relay of a quick opening motor control circuit. The device has the advantages ...

OPTIMIZATION FLOWS OF SOURCE, MASK AND PROJECTION OPTICS

【課題】本発明の実施形態は、最適化する投影光学系を含むリソグラフィ投影装置を最適化する方法を提供する。 【解決手段】現行の実施形態は、光源、マスク、および投影光学系を最適化するいくつかの流れ、ならびに様々な投影光学系、マスクおよび光源のうち任意のものを組み合わせる順次の反復する最適化工程を含む。投影光学系は、「レンズ」と広義に称されることがあり、したがって、最適化プロセスは、光源、マスク、レンズの最適化（SMLO）と称されることがある。部分的には、最適化に投影光学系を含むと、投影光学系の複数の調節可能な特性を導入することにより、より大きなプロセスウィンドウをもたらすことができるので、ＳＭＬＯは、既存の光源およびマスクの最適化プロセス（SMO）または投影光学系の最適化を含まない他の最適化プロセスと比較して望ましいものであり得る。 【選択図】図４Ａ

Synthesis method of 4-cyanopyridine

The invention discloses a synthesis method of 4-cyanopyridine, which is characterized in that 4-methylpyridine is vaporized and mixed with ammonia and air; the 4-methylpyridine reacts with the ammonia and air in the presence of a catalyst, and then the finished product of 4-cyanopyridine is obtained after absorption, extraction and rectification. The method features simple process and easy operation; the conversion rate of the 4-methylpyridine is more than 99% and the yield of the 4-cyanopyridine is more than 98%.

Optimization Flows of Source, Mask and Projection Optics

Embodiments of the present invention provide methods for optimizing a lithographic projection apparatus including optimizing projection optics therein. The current embodiments include several flows including optimizing a source, a mask, and the projection optics and various sequential and iterative optimization steps combining any of the projection optics, mask and source. The projection optics is sometimes broadly referred to as “lens”, and therefore the optimization process may be termed source mask lens optimization (SMLO). SMLO may be desirable over existing source mask optimization process (SMO) or other optimization processes that do not include projection optics optimization, partially because including the projection optics in the optimization may lead to a larger process window by introducing a plurality of adjustable characteristics of the projection optics. The projection optics may be used to shape wavefront in the lithographic projection apparatus, enabling aberration control of the overall imaging process. 1. A computer-implemented method for improving a lithographic process for imaging a portion of a design layout onto a substrate using a lithographic projection apparatus comprising an illumination source and projection optics , the method comprising:selecting a subset of patterns from the portion of the design layout and selecting an initial illumination source;simultaneously optimizing the subset of patterns and the illumination source; andoptimizing characteristics of the projection optics by using the optimized illumination source.2. The method of claim 1 , wherein the step of simultaneously optimizing the subset of patterns and the illumination source is performed by selectively repeating the steps of:defining a first multi-variable cost function of a first plurality of design variables that are characteristics of the lithographic process, at least some of the first plurality of design variables being characteristics of the illumination source ...

Network accessing authentication method, device and terminal equipment thereof

The invention discloses a network accessing authentication method, a device and terminal equipment thereof. The access network authentication method is used for EAP-SIM authentication between a WIFI and an AP in a driving-free manner. The network accessing authentication method is used for the terminal equipment with PC-side software and comprises the steps of: performing information exchange with a network card side through an AT-Server of the terminal for acquiring first authentication information; encrypting the first authentication information and WIFI equipment information together for generating second authentication information; performing information exchange with a target AP according to the second authentication information for acquiring third authentication information; and analyzing the third authentication information, comparing an analysis result with local authentication information for obtaining an authentication result. The access network authentication method according ...

Synthesis method of 2-chromium picolinate

The invention discloses a synthesis method of 2-chromium picolinate, which is implemented by hydrolyzing 2-cyanopyridine to obtain sodium salt solution of 2-chromium picolinate, adding chromium trichloride for complexation to obtain 2-chromium picolinate product. Compared with traditional method for synthesizing 2-chromium picolinate with 2-methylpyridine as raw material, the invention is simple in synthesis route, sate and reliable in process procedure, strong in maneuverability, high in reaction yield and good in product quality.

Method and system for monitoring radioactive substances in nuclear power plant control room

The invention discloses a method for monitoring radioactive substances in a nuclear power plant control room. The method comprises the following steps: acquiring activity concentration of radioactive substances in air of the nuclear power plant control room; monitoring whether the external irradiation dose and internal irradiation dose of the control room reach values which harm a human body; if so, transmitting an alarm signal. A comprehensive and reliable technology for monitoring and processing the radioactive substances in the nuclear power plant control room is realized. In addition, the invention also discloses a system for monitoring radioactive substances in the nuclear power plant control room.

Hydraulic system of power actuated setting device

The utility model discloses a hydraulic system of power actuated setting device has inlayed the manometer on the rifle body, the hydraulic pump links to each other with the oil tank, and overflow valve and magenetic exchange valve link to each other with the hydraulic pump, and the pneumatic cylinder passes through the oil circuit and four check valves link to each other, and the manometer links to each other with the hand -operated direction valve, and the oil tank is got back to to the voltol oil liquid stream behind the check valve that has the firing pin. The utility model discloses compare with traditional pneumatic power actuated setting device, it is more convenient to carry, and the noise is littleer, and it is more reliable to work.

Synthesis method of 2-zinc picolinate

The invention discloses a synthesis method of 2-zinc picolinate; first, cyanopyridine is absolutely hydrolyzed to obtain picolinic acid which is then complexed with zinc sulphate solution to obtain the zinc picolinate product. The invention has available materials, simple operation and high yield of the product.

Rail mounted comprehensive transport carrying device suitable for hill slope uses

The utility model discloses a rail mounted comprehensive transport carrying device suitable for hill slope uses, leading features include the drive mechanism that frame, rack and pinion drive mechanism, sprocket chain and reduction gear constitute, and DC Brushless motor and drive controller walk lines portion and prevent turning on one's side to jump a few part constitutions of device, electrical control box, power transmission device and mechanical brake mechanism and track etc. On preventing. Mechanical drive has adopted rack and pinion meshing's mode, and the track is realized through added a gear track between two bearing rails. Electric power transmission has adopted comparatively safe low pressure track power supply plan, and what adopt moreover is simple safe wiping line and collection electrode structure, has avoided large -scale line erection. The brushless control system of direct current of DC Brushless motor and drive controller constitution has been utilized in the aspect ...

HPLC (High Performance Liquid Chromatography) acetonitrile purification process and application thereof

The invention provides an HPLC (High Performance Liquid Chromatography) acetonitrile purification process which is characterized in that industrial acetonitrile is adsorbed by using an adsorbent column of modified porous carbon to which metal is attached, the attachment amount of the metal in the adsorbent column of the modified porous carbon is 25-35wt% of the total mass of the adsorbent column, and the metal is selected from one or more of iron, magnesium and nickel. The modified porous carbon adopted by the invention can be recycled, so that the production cost is reduced, and energy conservation and emission reduction are realized; the purification process is easy to operate, stable in operation and high in safety, the purification method is low in yield and loss rate, the quality reaches the standard and is stable, and the method is suitable for industrial mass production.

Safety brake device acting on traction sheave of tractor

The invention discloses a safety brake device acting on a traction sheave of a tractor, which belongs to the technical field of safety devices of elevators. The tractor comprises a transparent cover and a traction sheave of the tractor, which is characterized in that: the safety brake device comprises a fixed bracket, a brake mechanism, a start reset mechanism and a detecting mechanism, wherein the brake mechanism is arranged on the transparent cover of the tractor and is extended in the traction sheave and is provided with a sliding slot; the brake mechanism is used for braking and releasingthe traction sheave and comprises a tension spring, a fraction plate, a brake scotch and a brake scotch seat; the start reset mechanism is used for driving the brake mechanism to brake and release the traction sheave and comprises a steel wire, a cylindrical pin, a swinging rod, a guide rod and an elastic component; and the detecting mechanism is used for detecting whether the swinging rod acts and ...

Method for synthesizing acetonitrile by ethanol ammoniation method

The invention discloses a method for synthesizing acetonitrile by ethanol ammoniation method. Raw materials of ethanol and ammonia are respectively vaporized and pre-heated to 100-200 DEG C, the two raw material gases are mixed for reaction to obtain acetonitrile, the reaction adopts ethanol ammoniation catalyst with silicon dioxide as a carrier, and the reaction mol ratio of the two raw materials is ethanol: ammonia=1:0.8-1.2. The invention features available raw materials, small ammonia ratio, simple technique, easy operation and high product purity.

Technique for synthesizing niacinamide and co-producing niacin by hydrolyzing 3-cyanopyridine

The invention discloses a technique for synthesizing niacinamide and co-producing niacin by hydrolyzing 3-cyanopyridine, comprising the steps of producing niacinamide, producing niacin and the like. The invention has simple technological operation process and little equipment investment and is a niacin and niacinamide co-producing technique, the conversion ratio of 3-cyanopyridine is 100%, the recovery of niacinamide is 90%, and the total recovery of niacin is 99.8%.

Synthesis method of 4-cyanopyridine

The invention discloses a synthesis method of 4-cyanopyridine, which is characterized in that 4-methylpyridine is vaporized and mixed with ammonia and air; the 4-methylpyridine reacts with the ammonia and air in the presence of a catalyst, and then the finished product of 4-cyanopyridine is obtained after absorption, extraction and rectification. The method features simple process and easy operation; the conversion rate of the 4-methylpyridine is more than 99% and the yield of the 4-cyanopyridine is more than 98%.

Synthesis method of 2-picolinic acid

The invention discloses a synthesis method of 2-picolinic acid, which is implemented by hydrolyzing 2-cyanopyridine under alkaline condition, then using acid to neutralize, and steaming for drying followed by extracting with ethanol to obtain 2-picolinic acid. The invention is simple in technique, easy in operation and high in product yield.

Nuclear power plant process radiation monitoring method and system

The invention discloses a nuclear power plant process radiation monitoring method. The method comprises the steps of acquiring alarm and display data of a radiation monitoring point in real time through a radiation detector; transmitting the alarm and display data to a nuclear power plant DCS via hard wiring through an on-the-spot disposal box; and generating monitoring statistics information of the monitoring point according to the alarm and display data in the nuclear power plant DCS by using a KRT server in the nuclear power plant radiation monitoring system. A comprehensive and reliable nuclear power plant process radiation monitoring processing technology is realized. In addition, the invention also discloses a nuclear power plant process radiation monitoring system.

Methods for defect validation

A method of defect validation for a device manufacturing process, the method including: obtaining a first image of a pattern processed into an area on a substrate using the device manufacturing process under a first condition; obtaining a metrology image from the area; aligning the metrology image and the first image; and determining from the first image and the metrology image whether the area contains a defect, based on one or more classification criteria.