Method for preparing sodium thiocarbonate by phase transfer catalytic method

The present invention discloses phase transfer catalysis process of preparing sodium sulfocarbonate. The process is one normal temperature and normal pressure reaction process of sodium sulfide and carbon disulfide in the presence of ionic liquid as the phase transfer catalyst. The process includes the steps of: mixing industrial pure carbon disulfide and sodium sulfide water solution, adding ionic liquid in 5-10 vol% of the carbon disulfide, reacting for 5-10 min, and cooling to separate out sodium sulfocarbonate crystal. The present invention has lowered phase interface between sodium sulfide or sodium hydroxide water solution and carbon disulfide, raised reaction rate at normal temperature and normal pressure, low sodium sulfocarbonate preparing cost.

Experimental device for measuring chemical reaction rate and activation energy

The invention discloses an experimental device for measuring chemical reaction rate and activation energy. The experimental device comprises a reaction container with a cover plate, wherein the reaction container is positioned on a magnetic stirrer; a reaction tube with a bottom is arranged in the reaction container; the upper end of the reaction tube is arranged on the cover plate, and the bottom of the reaction tube is suspended; a lifting movable separator is arranged in the reaction tube, so that the reaction tube is divided into a left reaction area and a right reaction area; a water bath area is formed in an area between the reaction container and the reaction tube; a water bath area water outlet is formed in the lower part of the water bath area; a reaction area water outlet is formed in the lower part of the reaction tube; two charging openings which correspond to the two reaction areas, a gas collection port which corresponds to any reaction area, and a water bath area water inlet ...

High efficiency flacculant for carbon black containing heavy oil gasifying waste liquid and its prepn and application

Rubber strip end face bonding and pressing device of rubber solid tire

The invention discloses a rubber strip end face bonding and pressing device of a rubber solid tire. The device comprises a stand column, an upper pressing plate and a lower pressing plate, wherein a first air cylinder is fixed to the stand column, a piston rod of the first air cylinder is fixedly connected with the upper pressing plate, left pressing teeth are arranged on the bottom face of the upper pressing plate in the width direction, the lower pressing plate is located below the upper pressing plate and fixedly connected with the stand column, the upper pressing plate can move up and down relative to the lower pressing plate, a second air cylinder is fixed to the right side of the top face of the upper pressing plate, an inclined ejector plate is fixedly connected to the end of a piston rod of the second air cylinder, an avoiding through groove is formed in the upper pressing plate, the inclined ejector plate penetrates through the avoiding through groove, and the end face, away from ...

Drug inhibition capability prediction method based on small sample

The embodiment of the invention discloses a drug inhibition capability prediction method based on a small sample, which comprises the following steps: enabling an original feature vector to pass through an attention matrix to obtain a feature vector with smaller dimension and more representativeness, splicing the obtained feature vectors in pairs, and defining a new label as 0 or 1 according to the size of an original label. The spliced feature vectors pass through a classifier model composed of a convolution layer and a full connection layer, the feature vectors of the compound molecules needing to be subjected to inhibition efficacy detection and the feature vectors of other compound molecules with known inhibition efficacy values in the table are put into a trained model together, and the inhibition efficacy value of the compound molecules needing to be subjected to inhibition efficacy detection is obtained by comparing prediction results. The relative size is obtained, and the range ...

Graphene reinforced acetylene dimer catalyst and application method thereof

The invention provides a graphene reinforced acetylene dimer catalyst and an application method thereof. The catalyst comprises cuprous chloride, ammonium chloride, concentrated hydrochloric acid, water and graphene, wherein a ratio of the cuprous chloride to the ammonium chloride to the graphene to the concentrated hydrochloric acid to the water is 0.3kmol; 0.3kmol: 1.25g-3.75g: 0.3L to 45L. Vinyl acetylene is synthesized by the following steps: at first, dissolving the cuprous chloride and the ammonium chloride with water at a proportion of 2/3 on the premise of removing air out of a reactor through nitrogen; secondly, adding the graphene, the residual water and the concentrated hydrochloric acid into the reactor in sequence; and finally, replacing the nitrogen with acetylene so as to synthesize the vinyl acetylene. The water system nieuwland catalyst provided by the invention is used for synthesizing the vinyl acetylene, the conversion per pass of the acetylene and the selectivity of ...

Vapour repair shop integration intelligent control box

The utility model discloses a vapour repair shop integration intelligent control box contains at least one lane control mechanism, lane control mechanism contains lighting control circuit, socket control scheme and compressed air control scheme, each control scheme of lane control mechanism contains total accuse switch and at least one branch road respectively, and every branch road contains air switch, switching power supply and relay. The utility model discloses control each lane respectively, each control scheme of every lane contains total accuse switch and at least one branch road respectively, for example be divided into two branch roads, and just can always control the switch can realize centralized control again to piggyback controls such as the illumination in this lane, sockets, can select out or close a certain section totally as required, all is perhaps opened or closed, it is very intelligent, also energy saving more.

Dechlorination method of chlorine rhodochrosite

The invention discloses a dechlorination method of chlorine rhodochrosite, which has been ground into powder before dechlorination. The dechlorination method comprises the following steps: (1) at a room temperature, mixing chlorine rhodochrosite powder with lime slurry sufficiently to obtain mixed slurry; (2) adding sodium carbonate in the mixed slurry obtained from the step (1), and sufficiently mixing at the temperature of 25-40 DEG C; (3) performing the filtration and separation on the mixed slurry after being processed in the step (2) to obtain a precipitate and a filtrate; (4) washing the precipitate obtained from the step (3), and drying at the temperature of 30-80 DEG C to obtain the dechlorinated rhodochrosite powder. Compared with the prior art, the dechlorination method not only can remove chloridions in the chlorine rhodochrosite and prevent the loss due to manganese ion release, but also has the advantages of convenience in raw material source and low cost, and basically has ...

Heterogeneous redundant backboard and device, communication method, storage medium and electronic equipment

The invention relates to the technical field of data architecture, in particular to a heterogeneous redundant backboard and method, a storage medium and electronic equipment, and the heterogeneous redundant backboard comprises a first independent main control board bit, a second independent main control board bit and N independent slave control board bits, wherein the first independent main control board position and the second independent main control board position are in communication connection and have the same function, and the first independent main control board position and the second independent main control board position are respectively in communication connection with each independent slave control board position. And the first independent main control board position and the second independent main control board position are respectively connected with the N independent slave control board positions through buses. According to the invention, dual-independent system heterogeneous ...

Low-ripple direct-current ice-melting power supply system based on non-zero phase harmonic pole-cutting magnetic field injection

The invention discloses a low-ripple direct-current ice-melting power supply system based on non-zero phase harmonic pole-cutting magnetic field injection, and belongs to the field of application of multi-phase generator devices. The device comprises a diesel engine, a permanent magnet synchronous generator and a rectifying circuit which are connected in sequence, wherein the diesel engine drags the permanent magnet synchronous generator and then is connected with an ice melting circuit for thermal ice melting after passing through a five-phase full-bridge rectifying circuit; a rotor of the permanent magnet synchronous generator is designed based on a non-zero phase harmonic pole-cutting magnetic field injection mode, and the five-phase permanent magnet synchronous generator determines the amplitude and phase of a third harmonic magnetic field needing to be injected into an air gap according to load characteristics and a motor design principle. And the generator outputs a specific voltage ...

Current transformer waveform monitoring device and current transformer control system

The invention discloses a current transformer waveform monitoring device and a current transformer control system. The monitoring device comprises a data acquisition module which acquires current transformer operation state related data required to be monitored in each operation cycle of a current transformer control algorithm according to the current transformer control algorithm so that monitoring data are obtained; a data acquisition module which is connected with the data acquisition module and used for converting the monitoring data according to the preset communication protocol; and a data display module which is connected with the data transmission module and used for visually displaying the data transmitted by the data transmission module so that current transformer waveform monitoring is realized. Compared with existing waveform monitoring devices, the device is high in real-time performance, and waveform of voltage and current outputted by the current transformer can be monitored ...

Method for preparing sodium thiocarbonate by phase transfer catalytic method

The present invention discloses phase transfer catalysis process of preparing sodium sulfocarbonate. The process is one normal temperature and normal pressure reaction process of sodium sulfide and carbon disulfide in the presence of ionic liquid as the phase transfer catalyst. The process includes the steps of: mixing industrial pure carbon disulfide and sodium sulfide water solution, adding ionic liquid in 5-10 vol% of the carbon disulfide, reacting for 5-10 min, and cooling to separate out sodium sulfocarbonate crystal. The present invention has lowered phase interface between sodium sulfide or sodium hydroxide water solution and carbon disulfide, raised reaction rate at normal temperature and normal pressure, low sodium sulfocarbonate preparing cost.

Shaped steel cantilever beam fixed structure

The utility model provides a shaped steel cantilever beam fixed structure, include that the reinforcing bar of setting in shaped steel cantilever beam's stiff end both sides buries the piece respectively, the reinforcing bar buries the top passing angle ferropexy of piece, and the angle bar compresses tightly on shaped steel cantilever beam's stiff end. Bottom that the reinforcing bar buried stretch into among the concrete beam and fixed welding on fixing the steel sheet in concrete beam. The reinforcing bar bury and the both sides of shaped steel cantilever beam's stiff end between be provided with the chuck, with the wedging of shaped steel cantilever beam. So as to carries on firm fixedly to shaped steel cantilever beam, promote shaped steel cantilever beam's stability, improves the security of job site.