Preparation method of high-strength high-modulus graphite fiber

The invention relates to the field of organic high polymers, particularly a preparation method of a high-strength high-modulus graphite fiber, which is characterized by comprising the following steps: applying 2-3 times of drawing on a polyacrylonitrile copolymer fiber in the steam drawing stage to obtain grey yarn with the degree of orientation of 91-93%; preoxidizing the obtained grey yarn at 180-280 DEG C in an air atmosphere, and carrying out heat treatment in a six-stage gradient heating mode for 60-110 minutes to obtain a preoxidized fiber with the density of 1.34+/-0.02 g/cm<3>; carrying out low-temperature carbonization on the preoxidized fiber at 300-900 DEG C in a nitrogen protective atmosphere at the drawing ratio of 0-4% for 3+/-1.5 minutes, and carrying out high-temperature carbonization on the obtained fiber at 1000-1800 DEG C at the drawing ratio of -4-0% for 3+/-1.5 minutes to obtain the carbon fiber with the carbon content of greater than 96% and the diameter of 7 mu m; ...

Water surface single-body unmanned boat with two water-jet propellers

The invention discloses a water surface single-body unmanned boat with two water-jet propellers. A combined stabilizing fin is arranged at the bottom of an after-body of a main boat body and is composed of two cylindrical attached bodies and a wing, wherein the two cylindrical attached bodies are symmetrical in the width direction, the wing is fixedly connected with the bottom surfaces of the two cylindrical attached bodies and symmetrically arranged in the width direction, the wing is perpendicular to the two cylindrical attached bodies, the tops of the two cylindrical attached bodies are connected with the main boat body in a seamless mode, the wing is provided with two water inlets, and the water inlets are communicated with a water outlet to from a main flow passage for water flow. The water-jet propellers are arranged at the bottom end of the boat body and leans to the back, the noise of the boat body is lowered, the sliding surface of the unmanned boat is not damaged, and transverse ...

Method for preparing catalyst for synthesizing ethyl benzene

The invention relates to a preparation method for synthesizing an ethyl benzene catalyst through a catalytic dehydration reaction. A synthesized ZSM-5 molecular sieve with high silica alumina ratio is taken as a main body which is used to obtain the ethyl benzene catalyst together with alumina and modified components. The catalyst is in contact and reacts with phenyl ethyl ethanol raw material containing excessive benzene to obtain main products of ethyl benzene and water. The prepared catalyst comprises the following components by weight percentage: 20 to 45 percent of Al2O3 or SiO2, 40 to 70 percent of ZSM-5 with the high silica alumina ratio, and 5 to 15 percent of the modified components. The modified components can be at least one of families IIA, IIIA, VA and rare earth metal oxides in the periodic table of elements. Compared with the prior method of synthesizing the ethyl benzene through ethene and benzene, the method has higher economic benefits in a high oil price era; in addition ...

Method for analyzing influence of texture on magnetic performance of non-oriented silicon steel based on principal component regression analysis

The invention relates to a method for analyzing the influence of a texture on the magnetic performance of non-oriented silicon steel based on principal component regression analysis. The method comprises the following steps that the content of a beneficial texture component and the content of a harmful texture component in the non-oriented silicon steel are measured; standardization is conducted on all data; dimension reduction processing is conducted on the data with different texture contents; an eigen value is calculated, a principal component is determined, and an expression of the principal component is determined; regression analysis is conducted and a significance test is conducted on a regression equation; the regression equation is converted into a multi-component linear relation between the different texture component contents and the magnetic performance of the non-oriented silicon steel through the inverse operation of the standard deviation standardization method. By the adoption ...

Method for brewing oil-tea wine by using bio-enzymes

The invention discloses a method for brewing an oil-tea wine by using bio-enzymes. The method comprises the following steps: (1) cleaning and impurity removal; (2) crushing and sieving; (3) mixing; (4) high-temperature enzyme deactivation; (5) multi-enzyme decomposition; (6) carbohydrate supplementation; (7) fermentation; (8) distillation; and (9) aging and packaging. The method disclosed by the invention is simple in process, less in investment, low in energy consumption, and easy to operate. The oil-tea wine prepared by using the method is bright and transparent, mellow and exquisite in taste and typical in style, and has no suspended matters and precipitates.

METHOD AND DEVICE SYSTEM FOR PRODUCING DIMETHYL OXALATE THROUGH MEDIUM AND HIGH-PRESSURE CARBONYLATION OF INDUSTRIAL SYNTHESIS GAS AND PRODUCING ETHYLENE GLYCOL THROUGH DIMETHYL OXALATE HYDROGENATION

The present invention relates to a method and a device system for producing dimethyl oxalate through medium and high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation. The method comprises the following steps: adopting industrial NO, O2 and methanol as raw materials to perform an esterification reaction to produce methyl nitrite, then adopting industrial CO and methyl nitrite to perform a carbonylation reaction in a plate reactor to produce carbonylation products which mainly include dimethyl oxalate and dimethyl carbonate, separating the carbonylation products to obtain dimethyl carbonate products, and subsequently performing hydrogenation to dimethyl oxalate in the plate reactor to produce ethylene glycol products; and performing coupling recovery treatment to waste acid in the esterification reaction and purge gas in the carbonylation reaction for recycling. The system comprises an esterification reaction system, a carbonylation reaction system, a purge gases and waste acid coupling recovery system and a hydrogenation reaction system. The method has the features that the device consumption is remarkably reduced, and particularly through high coupling of recycling of nitric acid waste liquid and recycling of purge gas and the separation method thereof, the effects of the recovery and the recycling of the raw materials in reaction waste gas are remarkable.

Drilling mud returning device for hardened ground

A drilling mud returning device for a hardened ground comprises a hole opening reducing pipe, and the two ends of the hole opening reducing pipe include a large-diameter end and a small-diameter end; and the large-diameter end of the hole opening reducing pipe is connected with a mud returning groove, and the other end of the mud returning groove is connected with a mud basin. According to the device, workloads of mud ditch and mud pit excavation are saved, environmental destruction is avoided, and the fund of hardening recovery of a mud ditch and a mud groove is saved. The labor intensity is reduced, cost and working time are saved, and the environment is protected.

METHOD AND DEVICE SYSTEM FOR PRODUCING DIMETHYL OXALATE THROUGH HIGH-PR ESSURE CARBONYLATION OF INDUSTRIAL SYNTHESIS GAS AND PRODUCING ETHYLENE GLYCOL THROUGH DIMETHYL OXALATE HYDROGENATION

The present invention relates to a process and a device system for producing dimethyl oxalate by high-pressure carbonylation of industrial synthesis gas and producing ethylene glycol by hydrogenation. The process comprises the steps of: using industrial NO, O2 and methanol as raw materials for an esterification reaction to produce methyl nitrite; and then using industrial CO and methyl nitrite for a carbonylation reaction in a plate reactor to produce carbonylation products, which mainly include dimethyl oxalate and dimethyl carbonate; separating the carbonylation products to obtain dimethyl carbonate products; subjecting dimethyl oxalate to subsequent hydrogenation in the plate reactor to produce ethylene glycol products; subjecting the waste acids in the esterification reaction and purge gases in the carbonylation reaction to a coupling recovery treatment for recycling. The system comprises an esterification reaction system, a carbonylation reaction system, a coupling recovery system ...

Gargling powder for tooth health

A powdered gargle for treating decayed tooth, periodontitis, gingivitis, foul breath and inflammation after tooth extraction is prepared from 6 Chinese-medicinal materials such as coptis root, old honeysuckle flower, dandelion herbe, rhubarb, mint and Chinese prickly ash through sterilization, crushing and mixing.

METHOD AND DEVICE SYSTEM FOR PRODUCING DIMETHYL OXALATE THROUGH MIDHIGH AND HIGH-PRESSURE CARBONYLATION OF INDUSTRIAL SYNTHESIS GAS AND PRODUCING ETHYLENE GLYCOL THROUGH DIMETHYL OXALATE HYDROGENATION

A method and a device system for producing dimethyl oxalate through high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation. The method comprises the following steps: adopting industrial NO, Oand methanol as raw materials to perform an esterification reaction to produce methyl nitrite, then adopting industrial CO and methyl nitrite to perform a carbonylation reaction in a plate reactor to produce carbonylation products which mainly include dimethyl oxalate and dimethyl carbonate, separating the carbonylation products to obtain dimethyl carbonate products, and subsequently performing hydrogenation to dimethyl oxalate in the plate reactor to produce ethylene glycol products; and performing coupling recovery treatment to waste acid in the esterification reaction and purge gas in the carbonylation reaction for recycling. The system comprises an esterification reaction system, a carbonylation reaction system, a purge gases and waste acid coupling recovery system and a hydrogenation reaction system.

Preparation method of almond oil micro-capsules

The invention relates to a preparation method for a microcapsule powder product, in particular to a preparation method for an almond oil microcapsule which is suitable to be used in foods, health products, cosmetic and the like, and solves the problem of the micro-encapsulation of the almond oil microcapsule. The preparation method for the almond oil microcapsule is as follows: the first step, the almond oil and tween-80 are mixed in proportion and prepared into water solution, and gelatin is dissolved into distilled water to prepare gelatin water solution; the second step, emulsion used as core material is added into the gelatin water solution which is stirred continuously, being heated and stirred, acetic acid is added in to regulate pH value, then the solution is solidified and treatedby tannic acid for 40 minutes and put into a vacuum dry box, and after drying yellowish almond oil microcapsule powder can be finally obtained.

Carbon fiber monofilament tensile test device

The invention discloses a carbon fiber monofilament tensile test device. The carbon fiber monofilament tensile test device comprises a micro-tensile test unit and an in-situ observation unit, and the micro-tensile test unit comprises a first chuck used for fixing one end of a carbon fiber monofilament to be tested; the second chuck is used for fixing the other end of the carbon fiber monofilament to be detected; the micro-stretching driving mechanism is used for driving the second chuck to move along a selected direction; the micro tension monitoring mechanism is connected with the first chuck and used for monitoring the tension borne by the first chuck in the selected direction; the micro-displacement monitoring mechanism is used for monitoring the displacement of the second chuck in the selected direction; and the in-situ observation unit comprises a video microscopic mechanism and is used for acquiring and recording images of the first chuck, the second chuck and the carbon fiber monofilament ...

Paper quantitative moisture state controller

The controller mainly consists of control unit, adjusting valve and sensors for density, speed, temp, steam temp, flow rate and air temp and humidity. By means of computer, the states of paper machine, pulp, steam and environment are tested and controlled so as to real-time regulate steam flow. The initial state of paper machine is set according to the quantitative moisture content in paper product and the density of pulp is controlled based on the initial state and in-situ detected paper machine speed.

Compound monoammonium glycyrrhizinate S pharmaceutical composition and method for preparing high-capacity injection

The invention belongs to the technical field of pharmaceutical preparations, in particular to a compound monoammonium glycyrrhizinate S pharmaceutical composition and a method for preparing a high-capacity injection. The composition is a compound monoammonium glycyrrhizinate S sodium chloride injection. The injection is characterized by comprising the following components: 40-160g of monoammonium glycyrrhizinate S, 30-120g of cysteine hydrochloride, 400-1,600g of glycine, 40-160g of anhydrous sodium sulphite, 4-16g of sodium citrate, 900-1,800g of sodium chloride, a proper amount of sodium hydroxide and 100-200L of water for injection. The high-capacity injection is more stable and safer.

Ardealite reverse flotation whitening and impurity removing agent and preparation method and technological method thereof

The invention relates to an ardealite reverse flotation whitening and impurity removing agent and a preparation method and a technological method thereof, belongs to the technical field of phosphorus chemical industry solid waste treatment, and solves the problems that in the prior art, an ardealite whitening and impurity removing flotation agent is low in organic carbon grading performance, poor in whitening effect, poor in acid resistance and poor in removal capacity for iron impurities in ardealite. The invention relates to a whitening and impurity-removing agent for reverse flotation of ardealite. The agent is a compound agent of tributyl phosphate, terpilenol, fatty primary amine (R-NH2) with the fatty alkyl (R) carbon chain length of C12-C20 and dimethyl tertiary amine (R-N (CH3) 2) with the fatty alkyl (R) carbon chain length of C12-C20. The phosphogypsum reverse flotation whitening and impurity-removing agent provided by the invention adapts to a strong acid environment, has high ...

Shearing device for aluminum veneer forming

The utility model discloses a shearing device for aluminum veneer forming. Shearing device, workbench, a U-shaped fixing frame is fixedly arranged on the workbench. A shearing mechanism is arranged onthe U-shaped fixing frame; the shearing mechanism comprises a screw rod, a sliding seat, a fixed rod, a sliding sleeve, a fixed connecting rod, a fixed seat, a shearing motor and a cutting blade; a screw rod is rotationally arranged between the U-shaped fixing frames; the screw rod is sleeved with a sliding seat; a fixed rod is fixedly arranged at the bottom of the sliding seat, sliding sleeves slidably sleeve the left and right ends of the fixed rod, a fixed seat is arranged below the sliding sleeves and connected with the bottoms of the sliding sleeves through fixed connecting rods, a shearing motor is fixedly arranged at the bottom of the fixed seat, a cutting blade is fixedly arranged at the output end of the shearing motor, and a shearing table is arranged in the middle of the workbench ...

Municipal wastewater treatment plant volatile organic compound gas purification system and purification method thereof

The invention relates to a municipal wastewater treatment plant volatile organic compound gas purification system and a purification method thereof. A double-groove type thermal-storage combustion furnace performs first-stage purifying treatment, and is matched with an adsorption/desorption concentrating device such as a rotary-wheel type concentrating device, a rotary-ring type concentrating device, a fluidized bed concentrating device or a fixed bed type concentrating device for performing second-stage purifying treatment; a first concentration detection device arranged on a waste gas pipeline, a second concentration detection device arranged on a purified gas pipeline and a third concentration detection device arranged on a discharge pipe are used for detecting the concentrations of volatile organic compounds before and after purification, and a proportion opening degree of a first control valve arranged on the purified gas pipeline and a second control valve arranged on a gas guide ...

Water-surface single-body unmanned boat of single-water-spraying propeller

The invention discloses a water-surface single-body unmanned boat of a single-water-spraying propeller. A composite stabilization fin is connected under the middle of a boat stern and is composed of an appendage and a wing. The appendage is symmetrical about a boat bottom in a left-and-right mode and perpendicular to the boat bottom, and the upper end of the appendage is seamlessly connected with the boat bottom. The lower end of the appendage is fixedly connected with the wing which is horizontally arranged, and the wing is symmetric about the appendage in a left-and-right mode. Water inlet channels are formed in the wings and the appendage, and water inlets of the water inlet channels are formed in the front portion of the bottom of the wing and communicated with a water outlet through the water inlet channels. Due to the action of the wing, additional lift force is generated, the sliding efficiency is further improved, the composite stabilization fin facilitates the shipping-direction ...

Medicinal composition containing sodium ferulate and preparation method thereof

The invention relates to a stable composition containing sodium ferulate, belonging to the technical field of medicinal preparations. The composition is freeze-dried powder injection and is characterized by being prepared from the following components by weight: 100-300 grams of the sodium ferulate, 300-600 grams of mannitol, 0.01-0.05 gram of mosatil and 2000-4000 ml of added water for injection. The freeze-dried powder injection has outstandingly enhanced stability.

Efficient ash removal device of cement kiln flue gas denitration system

The invention discloses a cement kiln flue gas denitration system efficient ash removal device which comprises a supporting outer cover, an ash removal mechanism and a limiting mechanism are arranged in the supporting outer cover, the ash removal mechanism comprises two inner sleeves, the outer walls of the two inner sleeves are movably connected with outer sleeves in a sleeved mode, and the outer sleeves are connected with the limiting mechanism in a sleeved mode. Two sets of supporting shells are arranged on the outer wall of one side of the supporting outer cover, the inner sleeve and the outer sleeve are partially located in the supporting shells, a connecting frame is fixedly connected to the outer wall of one side of the outer sleeve, gear sets are arranged on the outer walls of the two sides of the connecting frame correspondingly, and motors are arranged on the two gear sets; one end of the inner sleeve is connected with a gas supply mechanism, the gas supply mechanism comprises ...

Method for producing continuous casting round billet for petroleum bush using convertor process

A method of producing continuous casting round billet special for oil annular tube with converter technology belongs to converter metallurgy method, and it is suitable for the production of oil annular tube steel. The 37Mn2V high strength oil annular tube steel control component in the invention is: [C]: 0.35-0.41%,[Si]: 0.17-0.35%,[Mn]: 1.40-1.60%,[P]: <=0.025%, [S]: <=0.020%,[V]: 0.08-0.14%,[Ni]: <=0.30%,[Cr]: <=0.30%,[Cu]: <=0.20%, [Mo]: <=0.15%. The specific process steps of the invention are: blast furnace -> converter roof-to-floor re-blowing -> LF refining furnace -> VD vacuum furnace -> Phi150 mm - Phi200 mm round billet conticaster -> turnover cooling bed -> testing -> storing. The advantages of the invention are: the products quality id better compared with the electric furnace production technology, the quality of residual elements (such as Cu, Sn, Ni, Pb, Sb, etc.) is low, the gas and inclusion is less and the purity of molten steel is high.

Rivet pressing device for annular thin-wall workpiece

The invention discloses a rivet pressing device for an annular thin-wall workpiece, and belongs to the technical field of riveting equipment, the rivet pressing device comprises a lathe bed mechanism, a headstock mechanism, a tailstock mechanism and a lifting fixing frame mechanism, a guide rail is arranged at the upper part of the lathe bed mechanism, and a linear motion sliding support is arranged on the guide rail, is used for supporting the lifting fixing frame mechanism and can linearly move along the guide rail; the headstock mechanism is arranged on the upper left portion of the lathe bed mechanism, and a riveting telescopic arm is arranged in the headstock mechanism and used for riveting action. The tailstock mechanism is arranged on the upper left portion of the lathe bed mechanism and corresponds to the headstock mechanism, a lead screw and nut screw pair is arranged in the tailstock mechanism, and the sleeve structure is used for adjusting the telescopic length of a sleeve. The ...

Reaction equipment for preparing oxamide from oxalate

The invention relates to the technical field of chemical equipment, in particular to reaction equipment for preparing oxamide from oxalate. The equipment sequentially comprises a feeding area, a reaction area, a settling area and a solid-liquid separation area in the fluid flowing direction, the equipment further comprises an inert gas balance port, a first material inlet, a second material inletand a circulating liquid inlet which are respectively communicated with the cavity of the feeding area, the solid-liquid separation area comprises a solid-phase material collection area and a liquid-phase material collection area, an overflow baffle is arranged between the solid-phase material collecting area and the liquid-phase material collecting area, the solid-phase material collecting area is communicated with a cavity in the settling area, the equipment further comprises a first crude product outlet communicated with a cavity in the solid-phase material collecting area, and a circulating ...

Preparation method of high-strength medium-model carbon fiber

The invention relates to the field of organic polymers and particularly relates to a preparation method of a high-strength medium-model carbon fiber. The preparation method comprises the following steps of pre-oxidizing a polyacrylonitrile copolymer fiber bundle at the air atmosphere within the temperature range of 180-280 DEG C; carrying out heat treatment in a six-stage gradient heating way for 60-110 minutes to obtain a pre-oxidized fiber with the density of 1.34+/-0.02g/cm<3>; and then, carrying out conventional carbonization, namely carbonizing at the low temperature of 300-900 DEG C and the drawing ratio of 0-4% under the protection of nitrogen gas for 3+/-1.5 minutes, and carbonizing the obtained fiber at the high temperature of 1000-1800 DEG C and the drawing ratio of -4-0% for 3+/-1.5 minutes, wherein the pipeline pressure of a low-temperature furnace is needed to be controlled between 5Pa below zero and 15Pa below zero in the low-temperature carbonization process. According to ...

Pre-oxidation method for preparing high-strength medium-model carbon fiber

The invention relates to the field of organic polymers and particularly relates to a pre-oxidation method for preparing a high-strength medium-model carbon fiber. The pre-oxidation method comprises the following steps of pre-oxidizing a polyacrylonitrile copolymer fiber bundle at the air atmosphere within the temperature range of 180-280 DEG C; carrying out heat treatment in a six-stage gradient heating way for 80-120 minutes, and controlling the temperature gradients at the fifth stage and the sixth stage to 14+/-2 DEG C to obtain a pre-oxidized fiber with the density of 1.34+/-0.02g/cm<3>; and then, carrying out conventional carbonization, namely carbonizing at the low temperature of 300-900 DEG C and the drawing ratio of 0-4% under the protection of nitrogen gas for 3+/-1.5 minutes, and carbonizing the obtained fiber at the high temperature of 1000-1800 DEG C and the drawing ratio of -4-0% for 3+/-1.5 minutes. According to the pre-oxidation method, the phenomenon of excessive pre-oxidization ...

Rotary packing machine

The invention relates to a rotary packing machine, which comprises an extrusion cutting tool, a mold matched with the extrusion cutting tool, an eccentric device, a driving device and a work table, wherein the outer wall of the extrusion cutting device is provided with a convex ring with the extrusion effect, the inner wall of the mold is provided with an annular groove matched with the convex ring arranged on the extrusion cutting tool, the extrusion cutting tool is in gap fit with the mold, the mold is arranged on the work table, the extrusion cutting tool is connected with the eccentric device, the eccentric device is connected with the driving device, and both the eccentric device and the driving device are arranged on the work table. The invention has simple operation, only the extrusion cutting tool and the corresponding mold need to be replaced according to different diameters of pipe fittings and different number of annular bulges without configuring a plurality of machines, the ...

Flexible photovoltaic support

The invention relates to the technical field of photovoltaic supports, and particularly discloses a flexible photovoltaic support, which comprises at least two support structures arranged at intervals along a first direction, one end of each support structure is anchored on a foundation, and the other end of each support structure is fixedly connected with a cross beam; the adjusting devices are rotatably mounted on the two sides of the cross beam; the supporting cables are arranged between the adjacent supporting structures in parallel, at least one end of each supporting cable is connected to the adjusting device, and a plurality of photovoltaic modules are arranged above the supporting cables; the two ends of the bearing cable are fixedly connected between the adjacent supporting structures; the two ends of the supporting rod structure are fixedly connected between the supporting cable and the bearing cable; and the wind-resistant devices are symmetrically hinged to the two sides of ...

Volume change considering expansive soil SWCC curve testing apparatus and volume change considering expansive soil SWCC curve testing method

The present invention discloses a volume change considering expansive soil SWCC curve testing apparatus and a volume change considering expansive soil SWCC curve testing method, particularly to a volume change considering expansive soil SWCC curve testing apparatus with characteristics of simple structure and easy use, and a volume change considering expansive soil SWCC curve testing method. The technical problems solved by the present invention are complex operation process, high cost and low work efficiency of the SWCC curve testing apparatus considering the expansive soil volume change. The apparatus of the present invention comprises a pressure chamber 1, a pressure balance system 2 and a sample placement device 3, wherein the pressure balance system 2 is communicated with the pressure chamber 1 through a valve IA and is communicated with the sample placement device 3 through a valve IIB, the bottom portion provided with the sample placement device 3 is connected with a water drain ...

Method for analyzing influences of grain sizes on magnetic performance of non-oriented silicon steel on basis of principal components regression analysis

The invention relates to a method for analyzing the influences of grain sizes on the magnetic performance of non-oriented silicon steel on the basis of principal component regression analysis. The method comprises the following steps: measuring the content of grains with different size ranges in the non-oriented silicon steel; standardizing all data; performing dimension reduction on the content data of the grains with different size ranges; calculating a characteristic value and determining a principal component and an expression thereof; performing regression analysis and performing significance testing on a regression equation; and converting the regression equation into a multivariate linear relation between the contents of grains with different size ranges and the magnetic performance of the non-oriented silicon steel by using inverse operation of a standard difference standardization method. According to the method, a multivariable program can be analyzed effectively, and the multivariate ...

Corner punching device for aluminum veneer production

The utility model provides a corner punching device for aluminum veneer production. The device comprises a workbench and supports, supports are symmetrically arranged on the front side and the rear side of the right portion of the workbench, a lead screw is rotationally arranged between the upper ends of the two supports and sleeved with a threaded sleeve, a connecting rod is fixedly arranged on the outer wall of the threaded sleeve, an air cylinder is fixedly connected to the bottom end of the connecting rod, and an angle punching machine is fixedly connected to the lower end of an air cylinder piston rod; the angle punching device has the advantages that the positioning is accurate, the clamping stability is high, the angle punching device is suitable for clamping irregular plates, the comprehensive clamping and fixing effect is good, and the angle punching quality is high.

Device and method for implementing static cone penetration test by truck-mounted rig

The invention discloses a device for implementing static cone penetration test by a truck-mounted rig. The device comprises a ground anchor, a connecting device I, a probing rod, a connecting device II, and a connecting device III, wherein the ground anchor is used for providing counter force; the connecting device I is used for connecting the ground anchor and the truck-mounted rig; the probing rod is used for assisting to press in static cone penetration equipment; the connecting device II is used for connecting the truck-mounted rig and the probing rod of the static cone penetration equipment, and the connecting device III is used for assisting to pull out the probing rod of the static cone penetration equipment and for connecting the truck-mounted rig and the probing rod of the static cone penetration equipment. The invention further discloses a method for implementing static cone penetration test by the truck-mounted rig. According to the device and the method, a current truck-mounted ...

Centrifugal refrigerating unit with anti - dish -washing device

The utility model relates to a centrifugal refrigerating unit with anti - dish -washing device belongs to the centrifugal refrierator and washs technical field. The utility model discloses a plurality of condensers, still include cooling water water inlet main pipe and the cooling water play water person in charge, by freezing water water inlet branch pipe and cooling water water outlet branch pipe and each condenser intercommunication respectively are responsible for to cooling water water inlet main pipe and cooling water play water, be provided with the cooling water water intaking valve on the cooling water water inlet branch pipe, be provided with the cooling water outlet valve on the cooling water water outlet branch pipe, the cooling water water intaking valve with be provided with the anti - flushing pipe of condenser between the condenser, be provided with condenser back flush drain valve on the anti - flushing pipe of condenser. This refrigerating unit has anti - dish -washing ...

Odors controlling apparatus of urban sewage treatment plant

Process and matching system for separating carbonylation feed gas

The invention relates to a process and a matching system for separating carbonylation feed gas, which organically integrates low-temperature methanol washing, precision filter, pre-adsorption, CO cold box, CO compression, pressure swing adsorption hydrogen production, desorption gas compression, membrane separation, permeating gas compression and feed gas cooler units, combines the advantages of multiple separation technologies, effectively overcomes respective disadvantages and obviously improves the condensability and the recovery rate of effective gas of H2 and CO in the carbonylation feed gas under the premise of not increasing fixed equipment investment and operating cost. In the invention, the compressor power consumption is only 35% of that completely subject to the pressure swing adsorption technology, the occupied area is less than 15% of that completely subject to the pressure swing adsorption technology, and the total investment is less than 70% of that completely subject to ...

Control method and system for grid-connected operation

The invention relates to the technical field of photovoltaic power generation, in particular to a grid-connected operation control method and system. Comprising the following steps: collecting the grid-connected voltage of a grid-connected inverter in an operation state, and obtaining the voltage to ground of the positive electrode of each photovoltaic module; determining the harmonic amplitude of each subsynchronous frequency in the grid-connected voltage, determining whether the absolute value of the voltage to ground of the positive electrode of each photovoltaic module is smaller than a preset standard voltage to ground value, and judging whether the grid-connected inverter operates in a weak power grid scene; and when the grid-connected inverter operates in a weak power grid scene, increasing the voltage of the bus and switching the operation mode of the grid-connected inverter from a voltage source grid-connected mode to a current source grid-connected mode. According to the method ...

Compound monoammonium glycyrrhizinate S pharmaceutical composition and method for preparing high-capacity injection

The invention belongs to the technical field of pharmaceutical preparations, in particular to a compound monoammonium glycyrrhizinate S pharmaceutical composition and a method for preparing a high-capacity injection. The composition is a compound monoammonium glycyrrhizinate S sodium chloride injection. The injection is characterized by comprising the following components: 40-160g of monoammoniumglycyrrhizinate S, 30-120g of cysteine hydrochloride, 400-1,600g of glycine, 40-160g of anhydrous sodium sulphite, 4-16g of sodium citrate, 900-1,800g of sodium chloride, a proper amount of sodium hydroxide and 100-200L of water for injection. The high-capacity injection is more stable and safer.

Preparation method of almond oil micro-capsules

The invention relates to a preparation method for a microcapsule powder product, in particular to a preparation method for an almond oil microcapsule which is suitable to be used in foods, health products, cosmetic and the like, and solves the problem of the micro-encapsulation of the almond oil microcapsule. The preparation method for the almond oil microcapsule is as follows: the first step, the almond oil and tween-80 are mixed in proportion and prepared into water solution, and gelatin is dissolved into distilled water to prepare gelatin water solution; the second step, emulsion used as core material is added into the gelatin water solution which is stirred continuously, being heated and stirred, acetic acid is added in to regulate pH value, then the solution is solidified and treated by tannic acid for 40 minutes and put into a vacuum dry box, and after drying yellowish almond oil microcapsule powder can be finally obtained.

Process flow for producing ethylene glycol with coproduction product dimethyl carbonate

The invention provides a serial process for synthesizing glycol and co-producing methyl carbonate with CO as starting raw material. The major process is carried out under the condition of gas phase: firstly, CO and methyl nitrite are carried out gas-phase oxidation coupled reaction to synthesize dimethyl oxalate and methyl carbonate; subsequently, methyl carbonate is separated out by a distilling tower, and heavy component dimethyl oxalate is processed by catalytic hydrogenation to obtain glycol. Methyl nitrite consumed during the oxidation coupled reaction can be supplemented by a regeneration tower (NO, O2 and methanol synthesis methyl nitrite. The main raw materials consumed in the process are inexpensive CO, O2, H2, methyl alcohol and the like, while the products of the process are glycol and methyl carbonate with high added value. The process is applicable to industrial production.

Novel dual-fiber protein adenovirus vector and application

The invention relates to the biomedical field and relates to a novel adenovirus vector used for gene therapy and vaccine vectors as well as a construction method and an application of the vector, in particular to design and construction as well as applications of a novel adenovirus vector and a novel oncolytic adenovirus which have a novel structural feature, do not affect packaging, have no toxic or harmful effects on normal cells of the human body and can kill tumor cells.

Concentric power out-put shaft of motor tricycle

The utility model relates to a concentric power out-put shaft of a motor tricycle, which is composed of a coupler, a transmission shaft, a bearing frame, a belt pulley and an angle iron support frame, on the basis of no change for an original tricycle type. An inner hole of the coupler is provided with a spline; one end of a shaft is provided with a spline; the other end is provided with the belt pulley. When the utility model works, the engagement of the transmission shaft can be carried out through the spline; the coupler is provided with a cross axle and is coupled with the transmission shaft. The power out-put shaft has more functions, less energy consumption, low noise and long lifetime.

Technique for producing wire rod for low carbon drawn wire

The invention relates to a technique of a wire rod for producing a low-carbon wire drawing. A production technique of converter - Ar-blowing refining - continuous casting - highline mill is adopted currently, which has the advantages of low production cost and little carburization and silicon-adding to the molten steel, but has the disadvantages of poor refining effect, high oxygen content, being difficult to deeply desulfurize and to remove inclusions, which influence the drawability of the wire rods, therefore, the technique of converter - ladle furnace (LF) refining - continuous casting - highline mill is invented, wherein, the LF ladle refining adopts reduction operation, aluminum wires are fed to enhance the molten steel to oxidize, then deoxidizers such as calcium carbide, aluminum granules, etc. are added to carry out diffusive deoxidation, and the whole course stirring on the condition of bottom argon-blowing is done simultaneously; when in refining, a white-slag refining system ...

Technology and device system for producing dimethyl oxalate by high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation

The invention relates to a technology and a device system for producing dimethyl oxalate by high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation. The technology comprises the following steps: adopting industrial NO, O2 and methanol as raw materials for an esterification reaction to produce methyl nitrite; adopting industrial CO and methyl nitrite for a carbonylation reaction in a plate reactor to produce carbonylation products, which mainly include dimethyl oxalate and dimethyl carbonate; separating the carbonylation products to obtain dimethyl carbonate products; subsequently adding hydrogen into dimethyl oxalate in the plate reactor to produce ethylene glycol products; conducting the coupling recovery treatment on waste acids in the esterification reaction and purge gases in the carbonylation reaction for recycling. The device system comprises an esterification reaction system, a carbonylation reaction system, a ...

Medicinal composition containing sodium ferulate and preparation method thereof

The invention relates to a stable composition containing sodium ferulate, belonging to the technical field of medicinal preparations. The composition is freeze-dried powder injection and is characterized by being prepared from the following components by weight: 100-300 grams of the sodium ferulate, 300-600 grams of mannitol, 0.01-0.05 gram of mosatil and 2000-4000 ml of added water for injection. The freeze-dried powder injection has outstandingly enhanced stability.

Amphibious unmanned surface boat provided with double bodies on inclined sides

The invention discloses an amphibious unmanned surface boat provided with double bodies on inclined sides. Each side body is connected with a middle boat body through a horizontal sheet body; two ducted propellers are arranged in front and rear of each sheet body; four ducted propellers are bilaterally symmetrical pairwise relative to the middle boat body; the rotational speeds of the two front propellers are opposite to those of the two rear propellers; a top perception platform is arranged on the top surface of the middle boat body; an inverted perception platform is arranged on the lower bottom surface of the front part of the middle boat body; a set of vertical rudder is arranged in the middle of the stern part of the middle boat body; a horizontal rudder is arranged in the rear of each sheet body; four main engines are arranged in the middle boat body and connected with the four different ducted propellers respectively; and the two side bodies adopt identical streamline aerofoil which ...

Telescopic water storage bucket of valve drains from area

The utility model discloses a telescopic water storage bucket of valve drains from area, including ladle body, the hollow base with the ladle body intercommunication, the drain valve of setting on the base, the ladle body comprises a plurality of nested radius platforms in proper order, and the diameter of the lower disc of every radius platform is less than the diameter of the last disc of the radius platform that it embed, bottom the radius platform of inlayer and hollow base communicate. The utility model discloses a flexible design is opened during the use, and the time spent compression had not both done benefit to the transport, practiced thrift the space again, through installing the valve that drains in the base side, can open, close according to the water needs at any time, avoided the inconvenient of current water storage bucket slope pouring, saved driller's physical power, application prospect is good, can obtain good economic benefits.

Efficient for infrared paint and its prepn

The present invention is efficient far infrared paint and its preparation. The far infrared paint as one ceramic composite features its material components: Suzhou clay, SiO2, Fe2O3, and MnO2; or Suzhou clay, BN, Fe2O3 and MnO2; or Suzhou clay, ZrO2, Ce2O3 and Ye2O3. The materials are mixed in certain proportion, ball milled and sieved to produce 150-200 mesh powder of 5 micron size, which is further produced into far infrared coating through plasma spray. It has a wide spectral heat radiation rate greater than 0.90 in 2.5-25 micron. With low cost and long service life, the present invention may be used widely in medical health care and industrial application, especially in physiotherapy with obvious curative effect.

Rotational microwave sterilization process for fruit-vegetable food

Principal component regression analysis method for analyzing influence of texture components on magnetic induction of non-oriented silicon steel

The invention relates to a principal component regression analysis method for analyzing influence of texture components on magnetic induction of non-oriented silicon steel. The principal component regression analysis method comprises the steps of measuring contents of different texture components in the non-oriented silicon steel; performing standardized processing on all the data; performing dimension reduction processing on statistical data; calculating a characteristic value, and determining quantities of principal components and expressions of the principal components; performing regression analysis, and performing significance testing on a regression equation; if the regression equation has non-significant independent variables, performing significance testing on the independent variables; transforming the regression equation into a multivariate linear equation of magnetic induction about the contents of different texture components through inverse operation of a standard deviation ...

Dandeng Tongnao tablets and preparation process thereof

The invention discloses Dandeng Tongnao tablets and a preparation process thereof, relating to the field of traditional Chinese medicines, and characterized in that a specific auxiliary material combination is utilized to improve the moisture absorption capability of the tablets. The auxiliary material combination used in the invention is the combination of starch and microcrystalline cellulose. The dosages of the starch and the microcrystalline cellulose are respectively 40-60g and 60-80g in every 1000 Dandeng Tongnao tablets. The tablets prepared by the invention have better anti-moisture absorption ability.

Technique for producing wire rod for low carbon drawn wire

The invention relates to a technique of a wire rod for producing a low-carbon wire drawing. A production technique of converter - Ar-blowing refining - continuous casting - highline mill is adopted currently, which has the advantages of low production cost and little carburization and silicon-adding to the molten steel, but has the disadvantages of poor refining effect, high oxygen content, beingdifficult to deeply desulfurize and to remove inclusions, which influence the drawability of the wire rods, therefore, the technique of converter - ladle furnace (LF) refining - continuous casting - highline mill is invented, wherein, the LF ladle refining adopts reduction operation, aluminum wires are fed to enhance the molten steel to oxidize, then deoxidizers such as calcium carbide, aluminum granules, etc. are added to carry out diffusive deoxidation, and the whole course stirring on the condition of bottom argon-blowing is done simultaneously; when in refining, a white-slag refining system ...

Catalyst for synthesizing ethylene glycol by hydrogenation of dimethyl oxalate

The invention relates to a method for preparing a catalyst for synthesizing ethylene glycol through catalytic hydrogenation. At least one nitrate of metal elements of family IB and family IIA selected from a periodic table of elements is prepared into an impregnation liquid, and a carrier Al2O3 with the specific surface area of between 100 and 300m<2>/g is placed into the impregnation liquid for impregnation to obtain the catalyst. The catalyst has high conversion rate and selectivity when applied to a reaction that the ethylene glycol is synthesized by dimethyl oxalate through catalytic hydrogenation.

Electric automobile blows a wind gap assembly

The utility model provides an electric automobile blows a wind gap assembly, belongs to automobile parts technical field. It includes the wind gap body, sets up blade on this internal a set of wind gap of wind gap, set up under this internal a set of wind gap of wind gap the blade and set up on the wind gap wind gap on the blade to dial the button, the wind gap dial button rear end fixed connection upper strata blade gear, upper blade gear set up the blade gear engagement of lower floor on the blade under the wind gap with fixed, the wind gap on the last blade connecting rod connection through setting up between the blade, the wind gap under connect through the lower blade connecting rod that sets up between the blade. The utility model discloses improve optimization traditional on blowing a wind gap basis, reduce opening mechanism reduce cost, dial the luffing motion that blade on the wind gap was realized to the button through stirring the wind gap from top to bottom, stir the horizontal ...

Vinpocetine medicine composition and preparation method thereof

The invention relates to a stable vinpocetine medicine composition belonging to the technical field of medicine preparations. The composition is a freeze-dried powder injection and is characterized in that the freeze-dried powder injection is prepared from the following components: 10-30g of vinpocetine, 70g of mannite, 20g of sorbitol, 10-20g of 50-100 ml of phosphoric acid and the balance of water for injection up to 2000ml. The freeze-dried powder injection prepared by the invention has better stability.

Process and matching process system for preparing fuel or industrial oil products through coal tar in hydrogenation mode

The invention relates to a process and matching process system for preparing fuel or industrial oil products through coal tar in a hydrogenation mode. Coal tar raw materials are distilled to remove water, ammonia, phenols and light hydrocarbon compounds, other heavy constituents and hydrogenation catalysts are mixed and then enter a first hydrogenation reactor, and in the process, the viscosity and the density of coal tar constituents are reduced, and the hydrogen-carbon ratio is improved; the hydrogenation products are subjected to distilling and deslagging and then enter a second hydrogenation reactor for hydrofining, and most sulfur, nitrogen, oxygen and heavy metals are removed; the hydrogenation products in the second hydrogenation reactor are distilled to obtain part of naphtha fraction and diesel fraction, other constituents enter a hydrogenation cracker, and the carbon chain is further lowered; the hydrogenation cracking products are distilled to obtain another part of naphtha fraction ...

Dandeng Tongnao tablets and preparation process thereof

The invention discloses Dandeng Tongnao tablets and a preparation process thereof, relating to the field of traditional Chinese medicines, and characterized in that a specific auxiliary material combination is utilized to improve the moisture absorption capability of the tablets. The auxiliary material combination used in the invention is the combination of starch and microcrystalline cellulose. The dosages of the starch and the microcrystalline cellulose are respectively 40-60g and 60-80g in every 1000 Dandeng Tongnao tablets. The tablets prepared by the invention have better anti-moisture absorption ability.

自主智能异构数据集成系统

... 本发明公开一种自主智能异构数据集成系统及方法，其特征在于，该发明利用映射器和基础内核进行的网络异构数据库自动探索处理；利用映射器和基础内核进行的网络数据源模型、主机定位索引表的创建；利用映射器和基础内核进行的自动化数据结构、数据字典和数据语义映射。本发明提供一种适用于企业、政府、行业、以及电子商务所迫切需要的安全、高效、低成本、高可用性，可运行在任何网络环境下的终端产品的自主智能异构数据集成系统及方法。 ...

Principal component regression analysis method of non-oriented silicon steel magnetism performance influence factor

The invention relates to a principal component regression analysis method of a non-oriented silicon steel magnetism performance influence factor. According to the method, the content of inclusions in different size intervals of non-oriented silicon steel of the same mark, the content of beneficial and harmful textured components and the content of crystal particles within different size ranges are recorded; standardized processing and dimension reduction processing are carried out on all data; a feature value is calculated, and the number of principal components and expressions of the principal components are determined; regression analysis is carried out, and a significance test is carried out on a regression equation; if a non-significant independent variable exists in the regression equation, the significance test is carried out on the independent variable; the regression equation is converted to a multielement linear relation between the sizes of the inclusions, the textured components ...

Method for preparing catalyst for synthesizing dimethyl oxalate

The invention relates to a method for preparing a catalyst. The catalyst can be used in the process of generation of dimethyl oxalate through oxidation coupling reaction between carbon monoxide and methyl nitrite. The catalyst is prepared by using at least one nitrate selected from metallic elements of a VIII group, an IB group and a VB group in a periodic table of elements, and soaking a carrier gamma-Al2O3 into a soaking solution. The catalyst has high conversion rate and selectivity when applied to reaction for synthesizing the carbon monoxide into the dimethyl oxalate.

Odors controlling apparatus of urban sewage treatment plant

The waste gas controlling apparatus for city sewage treating yard has one waste gas purifying treater with compost filtering material layer, grit layer and seeped water collector in the bottom; one degrading adsorbor beside the waste gas purifying treater and with communicated spraying layer, degrading and adsorbing layer, waste gas collecting chamber; one temperature regulating water tank below the degrading adsorbor and connected via water pump with the spraying unit in the spraying layer; one centrifugal fan with inlet connected to the sewage and waste gas inletting pipe and outlet connected to the waste gas collecting chamber; and purifying inlet pipeline in the top of the degrading adsorbor and with the other end embedded inside the grit layer. The present invention purifies waste gas of sewage treating yard physically and biologically.

Medicine for treating pyelonephritis

Refuse landfill cover layer

The invention discloses a refuse landfill cover layer. The refuse landfill cover layer is characterized in that the refuse landfill cover layer covers solid wastes; the cover layer comprises a sand layer, a deinking sludge layer and a loamy sand layer from bottom to top, wherein the sand layer is a capillary damage layer, the deinking sludge layer is a capillary water holding layer, and holes formed in the capillary damage layer are larger than those of the capillary water holding layer. Compared with a conventional standard cover layer, the cover layer disclosed by the invention solves the problem of wasting soil resources and has the advantages that construction cost is low, the cover layer is convenient to construct and maintain, and wastes are utilized to treat wastes.

Method for producing continuous casting round billet for petroleum bush using convertor process

A method of producing continuous casting round billet special for oil annular tube with converter technology belongs to converter metallurgy method, and it is suitable for the production of oil annular tube steel. The 37Mn2V high strength oil annular tube steel control component in the invention is: [C]: 0.35-0.41%,[Si]: 0.17-0.35%,[Mn]: 1.40-1.60%,[P]: <=0.025%, [S]: <=0.020%,[V]: 0.08-0.14%,[Ni]: <=0.30%,[Cr]: <=0.30%,[Cu]: <=0.20%, [Mo]: <=0.15%. The specific process steps of the invention are: blast furnace -> converter roof-to-floor re-blowing -> LF refining furnace -> VD vacuum furnace -> Phi150 mm - Phi200 mm round billet conticaster -> turnover cooling bed -> testing -> storing. The advantages of the invention are: the products quality id better compared with the electric furnace production technology, the quality of residual elements (such as Cu, Sn, Ni, Pb, Sb, etc.) is low, the gas and inclusion is less and the purity of molten steel is high.

High efficiency maintenance-free storage tank cabin top dust collection device

The invention concretely relates to a high efficiency maintenance-free storage tank cabin top dust collection device on an aluminum oxide concentrated phase and dilute phase transportation tail end aluminum oxide storage tank in the aluminum electrolysis production enterprises. The dust collection device comprises an air source device and a dust collection box. The upper part of the dust collection box is provided with an air outlet and the lower part thereof is matched with an exhaust port on the top of the aluminum oxide storage tank cabin in structure. The air source device transfers air to a nozzle in the dust collection box through a pipeline thereof. The box body of the dust collection box is divided into an upper cavity and a lower cavity through a clapboard. The pipeline provided with the nozzle and transferring the air is located at the upper cavity. Filter drums are located at the lower cavity and are suspended on the clapboard. The nozzles correspond to a plurality of filter ...

Compound monoammonium glycyrrhizinate S pharmaceutical composition and method for preparing frozen powder injection

The invention belongs to the technical field of pharmaceutical preparations, in particular to a compound monoammonium glycyrrhizinate S pharmaceutical composition and a method for preparing a frozen powder injection. The composition is the monoammonium glycyrrhizinate S frozen powder injection and comprises the following components: monoammonium glycyrrhizinate S, cysteine hydrochloride, glycine,anhydrous sodium sulphite, sodium citrate, sodium chloride, sodium hydroxide and water for injection. The frozen powder injection is more stable and safer.

Method of using CO2 in sputtering protection of steel making converter

Low-voltage multipurpose short-circuit connector

The invention discloses a low-voltage multipurpose short-circuit connector, comprising fixing clamps, flexible jumping wires and a short-circuit connecting member, wherein each fixing clamp comprises a conductive fixing member and a conductive adapting member; each of the flexible jumping wires is a conductive braided strap; each of two ends of each conductive braided strap is provided with a connecting hole; the short-circuit connecting member comprises a back plate which is made of a material with an insulating arc-isolating effect and is used for fixation; the back plate is provided with installation holes which are adapted to fuse wires with different pitches and the size of a base; the fuse wires are arranged on the base. In the field application, the low-voltage multipurpose short-circuit connector disclosed by the invention can be used as an effective measure for quickly repairing and recovering electric power after switches with different models and different specifications are ...

Method and device for separating carbon dioxide to improve mass energy of blast furnace gas

A method and a device for capturing, separating, recovering and recycling carbon dioxide in blast furnace gas provide an energy-saving technology which improves the mass energy of blast furnace gas and reduces the emission of carbon dioxide, and belong to the fields of iron and steel metallurgy as well as greenhouse gas emission reduction. The method and the device for recovering and separating the carbon dioxide in blast furnace gas consist of a gas processing system, an absorption tower, a regeneration tower, and a built-in boiling device, integrate a conventional blast furnace gas processing system, and are added with a chemical absorption system, thus leading the carbon dioxide in blast furnace gas to be captured, recovered and utilized; after partial external carbon dioxide is added, the recovered carbon dioxide is used for the gas carrier of fuel injected by a blast furnace and the blast of a hot blast furnace, and the entry of the carbon dioxide into the furnace promotes the chemical ...

Autonomous intelligent isomeri data integration system and method

The invented method uses the following mechanisms: the automatic search processing of the network isomerous database, the network data source model, the index table for positioning the host, the automated data structure, the data dictionary and the data semantic mapping. The automatic search processing, the network data source model and the automatic data structure are carried out in the basic kernel by using the mapping device. The invention provides the terminal product possible of running at any network environment, possessing the independent intelligent system and method for integrating isomerous data. The invented method and system are suitable for the corporations, government, industries requiring the performances of safety, low cost and high availability.

Method and device system for producing dimethyl oxalate through carbonylation of industrial synthesis gas and producing ethylene glycol through dimethyl oxalate hydrogenation

A method and a device system for producing dimethyl oxalate through high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation. The method comprises the following steps: adopting industrial NO, O2 and methanol as raw materials to perform an esterification reaction to produce methyl nitrite, then adopting industrial CO and methyl nitrite to perform a carbonylation reaction in a plate reactor to produce carbonylation products which mainly include dimethyl oxalate and dimethyl carbonate, separating the carbonylation products to obtain dimethyl carbonate products, and subsequently performing hydrogenation to dimethyl oxalate in the plate reactor to produce ethylene glycol products; and performing coupling recovery treatment to waste acid in the esterification reaction and purge gas in the carbonylation reaction for recycling. The system comprises an esterification reaction system, a carbonylation reaction system, a purge gases ...

Troxerutin freeze-dried powder injection and preparation method thereof

The invention belongs to the technical field of pharmaceutical preparation, and particularly relates to a stable Troxerutin freeze-dried powder injection, which is characterized in that the freeze-dried powder injection is prepared by the following components: 480g of troxerutin, 120g of mannitol, 4-9g of tartaric acid, and 2400ml of water for injection. The freeze-dried powder injection prepared by the method has better stability.

Rotary packing machine

The invention relates to a rotary packing machine, which comprises an extrusion cutting tool, a mold matched with the extrusion cutting tool, an eccentric device, a driving device and a work table, wherein the outer wall of the extrusion cutting device is provided with a convex ring with the extrusion effect, the inner wall of the mold is provided with an annular groove matched with the convex ring arranged on the extrusion cutting tool, the extrusion cutting tool is in gap fit with the mold, the mold is arranged on the work table, the extrusion cutting tool is connected with the eccentric device, the eccentric device is connected with the driving device, and both the eccentric device and the driving device are arranged on the work table. The invention has simple operation, only the extrusion cutting tool and the corresponding mold need to be replaced according to different diameters of pipe fittings and different number of annular bulges without configuring a plurality of machines, the ...

Static cone penetration test's device is implemented to truck -mounted drill rig

The utility model discloses a static cone penetration test's device is implemented to truck -mounted drill rig, including the earth anchor that is used for providing the counter -force, the connecting device I of connection earth anchor and truck -mounted drill rig for the connecting device II of the probe rod of truck -mounted drill rig, static sounding equipment is just connected to the probe rod of the supplementary static sounding equipment of impressing, is used for the supplementary connecting device III who extracts the probe rod of static sounding equipment and connect the probe rod of truck -mounted drill rig, static sounding equipment. The utility model discloses making current truck -mounted drill rig possess static cone penetration test's function, practicing thrift for the engineering construction and reconnoitre the cost in a large number, especially to the less place of reconnaissance work load, the advantage is more obvious, the general place moderate to the bore depth, ...

Amphibious unmanned surface vehicle with three bodies

The invention discloses an amphibious unmanned surface vehicle with three bodies. The middle of the bottom of a middle boat body is connected with a water entry boat body through a perpendicular first sheet body, two sides of the middle of the middle boat body are connected with tops of side bodies through horizontal second sheet bodies, two propellers are placed in front and rear of each second sheet body, the upper part of the water entry boat body is lower than the bottom of each side body, and the bottom of each side body is connected with the water entry boat body through an outward extending hydrofoil; and the front-mounted propellers are connected with the sheet bodies through support frames of the front-mounted propellers fixed on the second sheet bodies, the rear-mounted propellers are connected with the sheet bodies through rotatable support frames of the rear-mounted propellers, each rotatable support frame is connected with the second sheet body at the outer end of the boat ...

Compasses

The invention discloses a pair of compasses. A guide column is downwards fixed to the middle of the interior of a groove of a compasses handle, a pin shaft used for hinging the guide column and the upper ends of two compasses legs are arranged between the two walls of the groove, a sliding sleeve is disposed on the middle section of the guide column, a locking screw is installed at the position, close to the upper portion, of the side wall of the sliding sleeve, a trimming nut is connected with the lower side of the locking screw on the sliding sleeve in a threaded mode, a support is matched with the lower side of the trimming nut on the sliding sleeve in a sliding mode, and two connection rods are connected between the two sides of the support and the two compasses legs respectively through pin shafts. The compasses have the advantages of being convenient to operate, high in precision, low in cost and long in service life.

Technique for producing ethyl benzene

The invention provides a method for generating ethyl benzene through ethanol and benzene subjected to a catalytic dehydration reaction, and in particular to a method for taking discarded crop straw fermentation ethanol as a raw material to be synthesized with benzene. The method comprises the following steps: mixing the reaction raw materials in a fixed-bed reactor with the mol ratio of benzene to ethanol of 6:1, adding the mixed raw materials into a heating furnace for evaporation, then adding the raw materials into the fixed-bed reactor so as to be contacted with a catalyst containing a ZSM-5 molecular sieve, carrying out the reaction under at the reaction temperature of 250 to 550 DEG C, the reaction pressure of 0.1 and 3.0 MPa, a ethanol weight airspeed of between 1 and 10h<-1> so as to generate a reaction mixture containing ethyl benzene, and returning the unreacted benzene to the reactor after separation. Compared with the prior method of synthesizing the ethyl benzene through ethene ...

Process for preparing Chinese medicine preparation of treating pyelonephritis

A set of three Chinese medicines in the form of instant particles or pills for treating pyelonephritis is prepared from 23 Chinese-medicinal materials including phabitis seed, amomum fruit, amber, aucklandia, white atractylodes rhizome, etc.

Paste for treating spur

A medicinal dressing for treating osteophyte by exterior application is prepared from 13 Chinese-medicinal materials such as notoginseng, frankincense, myrrh, camphor,clematis root, etc. through drying in air, crushing, mixing, and enclosed storage. Before application, it is mixed with wax and honey, spread in gauze bag and heated. Then it is applied to affected position.

Rambutan preservative and preparation method thereof

The invention relates to the technical field of preservative products, in particular to a rambutan preservative and a preparation method thereof. The rambutan preservative and the preparation method can preserve rambutan. The preparation method comprises steps as follows: 0.1-2 g of glutamic acid, 2-7 g of sodium erythorbate, 1-3 g of lignin, 0.3-0.5 part of activated aluminum oxide, 0.3-2 g of chitosan, 0.1-0.3 part of potassium permanganate, 0.5-2 g of gibberellin, 3-5 parts of citric acid, 2-4 parts of tartaric acid, 9-14 parts of phosphoric acid, 1-3 parts of sorbic acid, 0.5-0.8 parts of salicylic acid and the balance of pure water with a pH of 7 are weighed, mixed uniformly and prepared into 1 kg of the preservative.

Method for cultivating hybrid wheat using SW89-3243 as parent

The present invention uses SW89-3243 line as one of parents, and adopts the physical, chemical or ecological cross breading method to prepare hybrid wheat. Said invention can fully utilize the characteristics of SW89-3243 with short-strong plant, strong lodging-resistant property, good resistance to disease and large ear head and plump grain so as to obtain the obvious effects of strong adaptability, obvious hybrid vigor and increasing yield.

Method for analyzing influence of impurities on magnetic performance of non-oriented silicon steel based on principal component regression analysis

The invention discloses a method for analyzing the influence of impurities on the magnetic performance of non-oriented silicon steel based on principal component regression analysis. The method comprises the steps that the number of the impurities in different dimensional sections in the non-oriented silicon steel is counted; all data are standardized; impurity statistical data are subjected to dimensionality reduction; a characteristic value is calculated, and the number of principal components and a principal component expression are determined; regression analysis is conducted, and a regression equation and an independent variable are subjected to a significance test; an inverse operation of the standard deviation standardization method is used for converting the regression equation into a multi-element linear relation between the number of the impurities in all the different dimensional sections, the total number of the impurities and the magnetic performance of the non-oriented silicon ...

Process flow for producing ethylene glycol with coproduction product dimethyl carbonate

The invention provides a serial process for synthesizing glycol and co-producing methyl carbonate with CO as starting raw material. The major process is carried out under the condition of gas phase: firstly, CO and methyl nitrite are carried out gas-phase oxidation coupled reaction to synthesize dimethyl oxalate and methyl carbonate; subsequently, methyl carbonate is separated out by a distillingtower, and heavy component dimethyl oxalate is processed by catalytic hydrogenation to obtain glycol. Methyl nitrite consumed during the oxidation coupled reaction can be supplemented by a regeneration tower (NO, O2 and methanol synthesis methyl nitrite. The main raw materials consumed in the process are inexpensive CO, O2, H2, methyl alcohol and the like, while the products of the process are glycol and methyl carbonate with high added value. The process is applicable to industrial production.

Communication network working condition monitoring system

The invention discloses a communication network working condition monitoring system, and the system comprises an acquisition module which is used for acquiring network working condition data of equipment; the monitoring database is used for storing the network working condition data acquired by the acquisition module; the data exchange module is suitable for providing a transmission channel for data between the equipment operation system and the communication network working condition monitoring system; the data arrangement module is used for listing and arranging the data in the monitoring database; the data analysis module is used for analyzing network problems and performing deep processing; the network processing module is used for controlling and processing the equipment network condition in advance according to an analysis result after network problems are monitored, the equipment with the network problems can be rapidly monitored, the specific condition of the industrial equipment ...

Compound monoammonium glycyrrhizinate S pharmaceutical composition and method for preparing frozen powder injection

The invention belongs to the technical field of pharmaceutical preparations, in particular to a compound monoammonium glycyrrhizinate S pharmaceutical composition and a method for preparing a frozen powder injection. The composition is the monoammonium glycyrrhizinate S frozen powder injection and comprises the following components: monoammonium glycyrrhizinate S, cysteine hydrochloride, glycine, anhydrous sodium sulphite, sodium citrate, sodium chloride, sodium hydroxide and water for injection. The frozen powder injection is more stable and safer.

Antiwind device of rig high -voltage tube

The utility model discloses an antiwind device of rig high -voltage tube, include and fix the connecting piece on rig stand upper portion tap, and the pin, the one end of pin is connected on the connecting piece, and other end position is crossing with the drilling cramp, still including connecting axle that is provided with the screw thread and the pin that is provided with the lockhole, the pin passes through connecting axle and connecting piece swing joint, and the pin passes through the pin to be fixed on the connecting piece, be provided with shaft hole I and pinhole I on the connecting piece, pin no. 1 is served and is provided with the shaft hole that corresponds with shaft hole I, pinhole I II, pinhole II, the connecting axle passes shaft hole I and II swing joint connecting piece and pins in the shaft hole, and the pin passes pinhole I and fixes the pin on the connecting piece with pinhole II. The utility model discloses avoid the rotatory high -voltage tube winding stand that ...

Bromhexine hydrochloride freeze-dried injection and preparation method thereof

The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a stable bromhexine hydrochloride lyophilized powder injection which is characterized in that the lyophilized powder injection is prepared from the following components: 4g of bromhexine hydrochloride, 110g of mannitol and 2g to 8g of meglumine, wherein, the pH value of citric acid is adjusted to 2.0 to 4.0 and water for injection is added up to 2,000ml. The lyophilized powder injection prepared by the invention has higher stability.

Cleaning method for Chinese calligraphy and painting

The cleaning process of Chinese calligraphy and painting includes the following steps: making a cavity possessing an opening with grate plate and in the size fitting the Chinese calligraphy and painting to be cleaned and air pumping hole connected via pipe with vacuum pump; spreading the Chinese calligraphy and painting on the grate plate and sealing the surrounding with adhesive tape and other material; spraying pure water at 20-60 deg.c to the polluted part of the Chinese calligraphy and painting; pumping with the vacuum pump in the speed of 60-450 cu m/hr. The said method can clean Chinese calligraphy and paiat completely in high efficiency.

Blast furnace top pressure regulation control method, device and equipment and storage medium

The invention provides a blast furnace top pressure adjusting control method, device and equipment and a storage medium, and relates to the technical field of smelting control. The method is applied to a pressure reducing valve group, the pressure reducing valve group and a TRT system are arranged between a purification device and a purified gas low-pressure pipe network system in parallel, and the pressure reducing valve group comprises a first hydraulic quick-opening valve; the method comprises the following steps: acquiring an actual top pressure value of the blast furnace; when the actual top pressure value is larger than or equal to the preset top pressure threshold value of the blast furnace, the first hydraulic quick-opening valve is controlled to be opened at the preset opening degree for pressure relief, and whether the actual top pressure value is larger than or equal to the preset top pressure threshold value or not is judged at the interval of preset duration; and if yes, the ...

Method for separating, reclaiming and recycling CO2 in gas of blast furnace and converter

The invention relates to a method for separating, reclaiming and recycling CO2 in gas of a blast furnace and a converter respectively, belongs to the fields of ferrous metallurgy and greenhouse gas discharge reduction, and provides an energy-saving technique for improving the mass energy of the gas and reducing the discharge of CO2. The method integrates and optimizes the reclamation and recycle of the gas of the blast furnace and the converter; the reclamation and separation of the CO2 in the gas are executed by a gas treatment system, an absorption tower and a regeneration tower with a built-in boiler, and a chemical absorption system is additionally provided; and the reclaimed CO2 and partial external CO2 can be used for blasting in a hot-blast stove of the blast furnace and carrying gas for injection fuel, and the reclaimed CO2 also can be used for replacing N2 to carry out slag splashing protection for the converter. The method realizes the recycle of the CO2 during iron making in ...

Paper quantitative moisture state controller

METHOD FOR PRODUCING HYBRID WHEAT SEED AND THE STERILE LINE REPRODUCTION THERE OF

The present invention relates to a method for utilizing the wheat physiological genotype sterile line to obtain hybrid wheat seed and make the sterile line inbreeding up. It adopts the principle of planting two line method, in the environment where the sterile line is caused almost being sterilized, the sterile line and the restorer line are planted alternately, and making their flowering phase coincide, then the hybrid wheat seeds are obtained by harvesting the born seeds of sterile line; in the other environment where the sterile line does not being caused sterilized absolutely (especially, restorer capable of breeding completely) the sterile line is planted for inbreeding. Said invention has only sterile and restorer two lines, it decreases greatly the procedures of seed producing and reproduction, the cost of hybrid wheat seed is greatly lowerd.

Amphibious unmanned vehicle with front-mounted double bodies on inclined sides and three bodies on water surface

The invention discloses an amphibious unmanned vehicle with front-mounted double bodies on inclined sides and three bodies on water surface. Second sheet bodies and side bodies are arranged on the left side and the right side of a boat bow of a middle boat body, the side bodies are fixedly connected with the middle boat body through the horizontal second sheets, a front propeller and a rear propeller are arranged on each second sheet body, the middle of a stern part of the middle boat body is connected with a water entry boat body through a perpendicular first sheet body, each propeller is connected with a brushless motor which is connected with an electronic speed governor, and the electronic speed governor is connected with a battery pack and a controlling system through cables; the two front-mounted propellers are fixed on the sheet bodies, outer ends of two rear-mounted propellers in the boat width direction are connected with the sheet bodies through bearings, inner ends are connected ...

Vascular endothelial growth factor receptor 2 antigen peptide-MHC I class molecule single-chain trimer DNA vaccine and application

The invention belongs to the biotechnology field, and provides a novel vascular endothelial growth factor receptor 2 antigen peptide KDR2, b2 microglobulin (b2m) and H-2Db single-chain trimer DNA vaccine (SCT-KDR2, the nucleotide sequence of the vaccine is shown as SEQ ID NO:1) for coding a main histocompatibility antigen I class molecule (H-2Db) restrictive and a method for generating the SCT-KDR2 DNA vaccine through a recombination technology. The invention further provides application of the SCT-KDR2 DNA vaccine and application of the DNA vaccine to treating diseases like tumors.

Patch for treating spur

Process and matching system for separating carbonylation feed gas

The invention relates to a process and a matching system for separating carbonylation feed gas, which organically integrates low-temperature methanol washing, precision filter, pre-adsorption, CO cold box, CO compression, pressure swing adsorption hydrogen production, desorption gas compression, membrane separation, permeating gas compression and feed gas cooler units, combines the advantages of multiple separation technologies, effectively overcomes respective disadvantages and obviously improves the condensability and the recovery rate of effective gas of H2 and CO in the carbonylation feedgas under the premise of not increasing fixed equipment investment and operating cost. In the invention, the compressor power consumption is only 35% of that completely subject to the pressure swing adsorption technology, the occupied area is less than 15% of that completely subject to the pressure swing adsorption technology, and the total investment is less than 70% of that completely subject to the ...

Water-surface monomer unmanned wing planing boat with two hydraulic propellers

The invention discloses a water-surface monomer nobody wing planing boat with two hydraulic propellers. The relatively front boat body bilge, of a boat midship of a main boat body is provided with two flared wing type columnar compound hydrofoils which are composed of two section-variable columnar attachment bodies and two wings; the tops of the two section-variable columnar attachment bodies are in seamless connection with a boat body; the bottom of one section-variable columnar attachment body is fixedly provided with one wing; the included angles between the two wings and a horizontal plane are 25-45 degrees; the relatively front part of each wing is provided with a water inlet communicated with a water outlet. An original hydro skimmer with a hydraulic propeller is lowered to a bottom wing from the water inlet on a sliding surface, so that a forward thrust can be provided so as to enable the boat to advance, a vertically upward added lift force also can be provided so as to enable the ...

Recovery method for fiber-reinforced composite material sucker rod